2012 CRWD monitoring report

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2012 Monitoring Report

Prepared by: Capitol Region Watershed District 1410 Energy Park Drive, Suite 4 Saint Paul, MN 55108 (651)-644-8888 www.capitolregionwd.org June 2013





Table of Contents Acronyms ........................................................................................................................................ i Definitions ..................................................................................................................................... iii List of Figures ................................................................................................................................ v List of Tables ............................................................................................................................... vii Chapter 1 Executive Summary ..................................................................................................... 1 Chapter 2 Introduction .................................................................................................................. 3 Chapter 3 3a 3b 3c 3d

Stormwater Monitoring ................................................................................................ 7 Monitoring Locations .....................................................................................................7 Monitoring and Analysis Methods.................................................................................9 Climatological Summary .............................................................................................19 Summary of Results .....................................................................................................22

Chapter 4 4a 4b 4c

Lake Water Quality Monitoring ................................................................................. 49 Introduction ..................................................................................................................49 Methods........................................................................................................................50 Results and Analysis ....................................................................................................51

Chapter 5 Conclusions and Recommendations ........................................................................... 65 5a Conclusions ..................................................................................................................65 5b Recommendations ........................................................................................................66 Chapter 6 References .................................................................................................................. 69 Appendices Appendix A: Detailed Subwatershed Data ................................................................................... 71 A.1 Como Lake Subwatershed .........................................................................................73 A.2 East Kittsondale Subwatershed ..................................................................................89 A.3 Phalen Creek Subwatershed .......................................................................................99 A.4 St. Anthony Park Subwatershed...............................................................................109 A.5 Trout Brook Subwatershed ......................................................................................123 A.6 Lake McCarrons Subwatershed ...............................................................................153 Appendix B: Metal Standards Based on Hardness ..................................................................... 161 Appendix C: Miscellaneous Reference Tables ........................................................................... 165



Acronyms and Abbreviations ac AHUG BMP cBOD Cd cf cfs cfu chl-a Cl Cr CRWD Cu DO E. coli EPA ft GP ha Hg FWA IBI IDDE in kg L lb m MCES mg mL MnDOT MPCA MPN MS4 NA NCHF NH3 Ni

Acre Arlington Hamline Underground Infiltration Facility Best Management Practice 5-day Carbonaceous Biochemical Oxygen Demand Cadmium Cubic feet Cubic feet per second Colony forming unit Chlorophyll-a Chloride Chromium Capitol Region Watershed District Copper Dissolved Oxygen Escherichia coli Environmental Protection Agency Foot Gottfried’s Pit Hectare Mercury Flow-Weighted Average Index of Biological Integrity Illicit Discharge Detection and Elimination Inch Kilogram Liter Pound Meter Metropolitan Council Environmental Services Milligram Milliliter Minnesota Department of Transportation Minnesota Pollution Control Agency Most probable number Municipal Separate Storm Sewer System Not Available North Central Hardwood Forest Ammonia Nickel Capitol Region Watershed District 2012 Monitoring Report i


NO2 NO3 NOAA NWS NSQD Ortho-P Pb PCBs PFOS RCD RCPW s TB TBI TDS TKN TMDL TP TSS UMN VSS Zn

Nitrite Nitrate National Oceanic and Atmospheric Administration National Weather Service National Stormwater Quality Database Ortho-phosphate Lead Polychlorinated biphenyls perfluorooctane sulfonate Ramsey Conservation District Ramsey County Public Works Second Trout Brook Trout Brook Storm Sewer Interceptor Total Dissolved Solids Total Kjeldahl Nitrogen Total Maximum Daily Load Total Phosphorus Total Suspended Solids University of Minnesota-St. Paul Campus Volatile Suspended Solids Zinc

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Definitions Acute exposure – in water quality standards, the minimum concentration of a chemical to which an organism may be exposed for a short time period without experiencing adverse effects. Baseflow – the sustained non-storm event flow in a channel or pipe from subsurface runoff (i.e. groundwater) that is usually at a relatively constant, slow velocity. Best Management Practice – Technique, measure, or structural control that is used for a given set of conditions to manage the quantity and improve the quality of stormwater runoff in the most cost effective manner. Chronic exposure – in water quality standards, the minimum concentration of a chemical to which an organism may be exposed for an extended period of time without experiencing adverse effects. Composite sample – a water sample that is made up of several samples taken at spaced intervals. Discharge – rate of flow in pipe or stream, expressed as a volume per unit time, most commonly cubic feet per second (cfs). Epilimnion – in a lake, the top layer of water, characterized in the summer by warm, circulating water. MPCA lake standards are based on water sampled from this layer. Eutrophic – a water body with high biological productivity. These lakes have murky water and an extensive macrophyte population. Algal blooms are common. Flow-weighted concentration – the total pollutant load divided by total flow, often expressed as mg/L. Grab sample – a water sample that is obtained by taking a single sample. Hardness – the concentration of salts (e.g. calcium carbonate, magnesium carbonate) in a water sample. Hypereutrophic – a water body with excessive biological productivity. These lakes have very murky water, frequent algal blooms and fish kills, foul odor, and rough fish. Hypolimnion - the part of a lake below the thermocline made up of water that is stagnant and of essentially uniform temperature except during the period of overturn Illicit Discharge – Any discharge to the municipal separate storm sewer system that is not composed entirely of stormwater, except for discharges allowed under a NPDES permit or water used for firefighting operations (EPA). Impaired Waters – Waters that are not meeting their designated uses because of excess pollutants violating water quality standards (from the MPCA website). Capitol Region Watershed District 2012 Monitoring Report iii


Load – the total volume of pollutant, often expressed in lbs or kg. Mesotrophic – a water body that has intermediate biological productivity. These lakes have moderately clear water, late-summer algal blooms, moderate macrophyte populations, and occasional fish kills. Normalized Pollutant Yield – This normalized yield accounts for temporal and spatial precipitation differences by dividing the pollutant yield by the number of inches of water runoff (water yield) in a subwatershed over a given period of time. It is expressed as pounds per acre per inch of runoff. Oligotrophic – a water body that has low biological productivity, and is characterized by clear water, few macrophytes, and salmonid fish. Secchi depth – a measure of the transparency of lake water. Storm flow – water flowing through the pipe during storm events. Storm flow usually occurs for a short amount of time, and has a high velocity. Stormwater – water that is not infiltrated into the soil during and following a rainfall event. Thermocline - the region in a thermally stratified body of water which separates warmer surface water from cold deep water and in which temperature decreases rapidly with depth Yield – the amount of pollutant produced per land area, often expressed as lbs/acre or kg/ha.

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List of Figures Figure 1. Capitol Region Watershed District ........................................................................................5 Figure 2. Mississippi River Reference Site and 2012 CRWD Monitoring Sites ..................................8 Figure 3. Annual precipitation totals (2005-2012) as compared to the NWS 30-year normal ...........20 Figure 4. Monthly precipitation totals for 2012 in CRWD.................................................................21 Figure 5. Total Discharge at CRWD Monitoring Sites, 2005 – 2012.................................................24 Figure 6. Storm and Base Discharge CRWD Monitoring Sites, 2012................................................25 Figure 7. Total Water Yield at CRWD Monitoring Sites, 2005-2012 ................................................26 Figure 8. Flow-Weighted Average TSS Concentrations at CRWD Monitoring Sites, 2005-2012 ....30 Figure 9. Flow-Weighted Average TP Concentrations at CRWD Monitoring Sites, 2005-2012 ......31 Figure 10. Storm and Base TSS Loads at CRWD Monitoring Sites, 2012 ........................................32 Figure 11. Storm and Base TP Loads at CRWD Monitoring Sites, 2012 ..........................................33 Figure 12. TSS Yields at CRWD Monitoring Sites ............................................................................34 Figure 13. Normalized TSS Yields at CRWD Monitoring Sites ........................................................35 Figure 14. Normalized TSS Yields Across CRWD Monitored Subwatersheds .................................36 Figure 15. TP Yields at CRWD Monitoring Sites ..............................................................................37 Figure 16. Normalized TP Yields at CRWD Monitoring Sites ..........................................................38 Figure 17. Normalized TP Yields Across CRWD Monitored Subwatersheds ...................................39 Figure 18. TSS Yields at Metro-Area Tributaries and CRWD Subwatershed Outlets .......................40 Figure 19. TP Yields at Metro-Area Tributaries and CRWD Subwatershed Outlets .........................41 Figure 20. 2012 Como Lake TP, Chl-a, and Secchi Depths ...............................................................55 Figure 21. 2012 Crosby Lake TP, Chl-a, and Secchi Depths .............................................................56 Figure 22. 2012 Little Crosby Lake TP, Chl-a, and Secchi Depths....................................................56 Figure 23. 2012 Loeb Lake TP, Chl-a, and Secchi Depths.................................................................57 Figure 24. 2012 Lake McCarrons TP, Chl-a, and Secchi Depths .......................................................57 Figure 25. 2012 and Historical Growing Season TP Averages ..........................................................58 Figure 26. 2012 and Historical Growing Season Chl-a Averages ......................................................59 Figure 27. 2012 and Historical Growing Season Secchi Depth Averages .........................................59 Figure 28. Como Lake Growing Season TP, Chl-a, and Secchi Depth Averages ..............................60 Figure 29. Crosby Lake Growing Season TP, Chl-a, and Secchi Depth Averages ............................61 Figure 30. Little Crosby Lake Growing Season TP, Chl-a, and Secchi Depth Averages ..................62 Figure 31. Loeb Lake Growing Season TP, Chl-a, and Secchi Depth Averages ...............................63 Figure 32. Lake McCarrons Growing Season TP, Chl-a, and Secchi Depth Averages ......................64 Figure 33. Sampling Sites in the Como Lake Subwatershed ..............................................................74 Figure 34. 2012 Como 7 Level, Discharge, and Rainfall ...................................................................79 Figure 35. 2012 Golf Course Pond Outlet Level, Discharge, and Rainfall ........................................80 Figure 36. Sampling Sites in the East Kittsondale Subwatershed ......................................................90 Figure 37. 2012 East Kittsondale Level, Discharge, and Rainfall ......................................................92 Figure 38. Sampling Sites in the Phalen Creek Subwatershed.......... ...............................................100 Figure 39. 2012 Phalen Creek Level, Discharge, and Rainfall .........................................................102 Figure 40. Sampling Sites in the St. Anthony Park Subwatershed ...................................................110 Figure 41. 2012 St. Anthony Park Level, Discharge, and Rainfall ..................................................112 Figure 42. 2012 Sarita Outlet Level, Discharge, and Rainfall ..........................................................118 Figure 43. Sampling Sites in the Trout Brook Subwatershed ...........................................................124 Capitol Region Watershed District 2012 Monitoring Report v


Figure 44. Figure 45. Figure 46. Figure 47. Figure 48. Figure 49. Figure 50. Figure 51.

2012 Trout Brook – West Branch Level, Discharge, and Rainfall .................................126 2012 Trout Brook – East Branch Level, Discharge, and Rainfall ...................................134 2012 Trout Brook Outlet Level, Discharge, and Rainfall ...............................................142 Water Level Elevation and Precipitation at Arlington-Jackson Stormwater Pond, 2012....................................................................................................149 Water Level Elevation and Precipitation at Sims-Agate Stormwater Pond, 2012 ..........150 Water Level Elevation and Precipitation at Westminster-Mississippi Stormwater Pond, 2012....................................................................................................151 Water Level Elevation and Precipitation at Willow Reserve Stormwater Pond, 2012....................................................................................................152 Sampling Sites in the Lake McCarrons Subwatershed....................................................154

Figure 52. 2012 Villa Park Level, Discharge, and Rainfall ..............................................................156

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List of Tables Table 1. Sites Monitored in 2012.....................................................................................................11 Table 2. Analysis Method, Reporting Limit, and Holding Times for Water Chemistry Parameters Analyzed by MCES Laboratory.........................................................................................12 Table 3. Surface Water Quality Standards ........................................................................................17 Table 4. NSQD Stormwater Pollutant Median Values ....................................................................18 Table 5. The 2005 to 2012 annual precipitation totals as compared to the NWS 30-year normal. .19 Table 6. CRWD Monitoring Season Rainfall Amounts ..................................................................23 Table 7. CRWD Total Monitoring Days..........................................................................................23 Table 8. 2012 Monitoring Results Summary ...................................................................................29 Table 9. Pollutant Standards and Average Concentrations at Monitoring Sites and in the Mississippi River ...............................................................................................................42 Table 10. 2012 Metals Concentrations and exceedances at CRWD Sites and in the Mississippi River (mg/L) .....................................................................................................................45 Table 11. 2012 Baseflow Grab E. coli Concentrations at CRWD Monitoring Sites .......................46 Table 12. 2012 Stormflow Grab E. coli Concentrations at CRWD Monitoring Sites .....................47 Table 13. CRWD 2012 Median Stormwater Quality Data versus NSQD Median Data .................48 Table 14. Deep and Shallow Lake Water Quality Standards...........................................................51 Table 15. 2012 and Historical Water Quality Average Concentrations ..........................................58 Table 16. 2005 – 2012 Como 7 Subwatershed Monitoring Results ................................................75 Table 17. 2012 Como 7 Subwatershed Laboratory Data .................................................................77 Table 18. 2012 Como 7 Subwatershed Loading ..............................................................................81 Table 19. 2005 – 2012 East Kittsondale Monitoring Results ..........................................................91 Table 20. 2012 East Kittsondale Subwatershed Laboratory Data ...................................................93 Table 21. 2012 East Kittsondale Subwatershed Loading ................................................................95 Table 22. 2005 – 2012 Phalen Creek Monitoring Results .............................................................101 Table 23. 2012 Phalen Creek Laboratory Data ..............................................................................103 Table 24. 2012 Phalen Creek Loading ...........................................................................................105 Table 25. 2005 – 2012 St. Anthony Park Monitoring Results .......................................................111 Table 26. 2012 St. Anthony Park Laboratory Data .......................................................................113 Table 27. 2012 St. Anthony Park Loading ....................................................................................115 Table 28. 2006 – 2012 Sarita Outlet Monitoring Results ..............................................................117 Table 29. 2012 Sarita Outlet Laboratory Data ...............................................................................119 Table 30. 2012 Sarita Outlet Loading ............................................................................................121 Table 31. 2005 – 2012 Trout Brook - West Branch Monitoring Results ......................................125 Table 32. 2012 Trout Brook – West Branch Laboratory Data ......................................................127 Table 33. 2012 Trout Brook – West Branch Loading ...................................................................129 Table 34. 2006 – 2012 Trout Brook - East Branch Monitoring Results ........................................133 Table 35. 2012 Trout Brook – East Branch Laboratory Data ........................................................135 Table 36. 2012 Trout Brook – East Branch Loading .....................................................................137 Table 37. 2005 – 2012 Trout Brook Outlet Monitoring Results ...................................................141 Table 38. 2012 Trout Brook Outlet Laboratory Data ....................................................................143 Table 39. 2012 Trout Brook Outlet Loading .................................................................................145 Table 40. 2006 – 2012 Villa Park Outlet Monitoring Results .......................................................155 Capitol Region Watershed District 2012 Monitoring Report vii


Table 41. Table 42. Table 43. Table 44. Table 45.

2012 Villa Park Outlet Laboratory Data ........................................................................157 2012 Villa Park Outlet Loading .....................................................................................159 2012 Metals Standards Based on Average Hardness.....................................................164 2012 Data Collection Efficiency at CRWD Monitoring Sites .......................................167 2012 Epilimnetic Data and Growing Season Averages .................................................168

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Chapter 1

Executive Summary

Capitol Region Watershed District (CRWD) in Ramsey County, Minnesota is a special purpose unit of government that manages and protects water resources within its watershed boundaries. CRWD is a 41 square mile subwatershed nested in the Upper Mississippi River basin that contains portions of five cities, including: Falcon Heights, Lauderdale, Maplewood, Roseville, and Saint Paul. CRWD is highly urbanized with a population of 245,000 and 42% impervious surface coverage. All runoff from CRWD eventually discharges to the Mississippi River from 55 outfall locations. A goal of CRWD is to understand and address the presence of pollutants and their impacts on water quality within the District in order to better protect and manage local water resources. Subsequently, CRWD established a monitoring program in 2004 to begin assessing water quality and quantity of various District subwatersheds and stormwater best management practices over time. In 2012 and previous years, CRWD collected water quality and continuous flow data from major subwatersheds, lakes, ponds, and stormwater BMPs. This report focuses on the water quality and quantity data collected during the 2012 monitoring year (January 2012-December 2012) and provides analysis of results for all monitored subwatersheds. In addition, historical water quality and quantity data from previous monitoring years (2005 through 2011) are reported for comparison to the 2012 data. The purpose of this report is to use the data to characterize overall watershed health and water quality trends over time which in turn will inform management decisions for continued improvement of District water resources. Within CRWD, there are sixteen major subwatersheds, six of which are currently monitored for water quantity and quality (St. Anthony Park, East Kittsondale, Phalen Creek, Trout Brook, McCarrons, and Como). Within the six monitored subwatersheds, CRWD collected water quality and/or quantity data at twenty-two monitoring sites in 2012, including: ten “full water quality” stations with automated samplers and water level and velocity sensors; two “flow-only” stations with water level and velocity sensors; five water level sites; and five lakes. Also, six precipitation gauges collected rainfall data across the watershed. Samples were collected during both baseflow and stormflow periods and were analyzed for a suite of water quality parameters including nutrients, sediment, metals, and bacteria. Ramsey County Public Works Department (RCPW) monitored water quality of the five lakes in CRWD on a monthly or bi-monthly basis from May through September. The lakes were monitored for several water quality parameters including nutrients, sediment, water clarity, and chlorophyll-a. The total amount of precipitation for the 2012 calendar year was 30.26 inches which was slightly less than the NWS 30-year normal of 30.61 inches. May 2012 was the wettest month, comprising 33% of the total annual precipitation amount for 2012. The months of August to November 2012 were unseasonably dry and drought-like. Therefore, the majority of precipitation events in 2012 occurred between April and July 2012.

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During the 2012 monitoring period, CRWD stormwater monitoring sites had less total discharge than the two previous years (2010 and 2011) due to a decrease in total annual precipitation. Total discharge and water yield varied at individual monitoring sites depending on the cumulative number of days in the monitoring period and the total contributing drainage area. In 2012, total phosphorous (TP) concentrations generally increased at all monitoring sites in comparison to 2011 TP average concentrations. The highest total TP loads were generated from Trout Brook Outlet and Trout Brook–West Branch. The Trout Brook-West Branch subwatershed generated the highest TP yield with 1.674 lb/ac. The next highest TP yields for all monitored subwatersheds were Phalen Creek (1.026 lb/ac) and Trout Brook Outlet (0.828 lb/ac). East Kittsondale had the highest normalized TP pollutant yields (0.056 lb/ac/in runoff). The 2012 total suspended solids (TSS) concentrations were comparable to the 2011 average concentrations. The highest TSS loads were generated from Trout Brook–West Branch (1,281,255 lbs) and Trout Brook Outlet (1,203,283 lbs). Trout Brook–West Branch generated the highest TSS yield (506 lb/ac). East Kittsondale (381 lb/ac) and Phalen Creek (295 lb/ac) had the next highest TSS yields. Of the four subwatershed outlet sites, the highest normalized TSS pollutant yields were at East Kittsondale (28 lb/ac/in runoff). Compared to the Mississippi River at Lamberts Landing, CRWD sites were significantly more concentrated in pollutants. CRWD sites also exceeded water quality standards for several nutrients. Metals standards were exceeded during storm events, illicit discharges, and averaged yearly flows at some sites. Compared to other metro-area tributaries, CRWD sites generally produced more pollutants per acre. Bacteria concentrations of E. coli exceeded the maximum standard at all sites during most storm events. In 2012, the water quality of the five District lakes (Como, McCarrons, Loeb, Crosby, and Little Crosby) varied by water body and by time of year. Based on the MPCA eutrophication numeric water quality standards, Loeb Lake and Lake McCarrons met the MPCA standards for all parameters during the 2012 growing season (May-September). Both Crosby Lake and Little Crosby Lake met the MPCA shallow lake standards for Chl-a concentration and Secchi depth, while they both failed for TP concentration. Como Lake did not meet any of the MPCA shallow lake standards for Secchi depth, TP, and Chl-a concentrations during 2012 growing season. Based on the results and findings of the 2012 Monitoring Report, CRWD has several goals and recommendations for 2013 to continue improving the monitoring program and the water quantity and quality dataset. Specifically, CRWD aims to complete the following in 2013: •

Collaborate with Mississippi Watershed Management Organization (MWMO) and foster partnerships with various research groups from the University of Minnesota to broaden our understanding of urban hydrology and pollutant loading

Review the CRWD monitoring program to: evaluate goals; ensure methods, sites, and activities are assisting in meeting the monitoring program goals; and improve overall efficiency of monitoring activities and data quality. Specifically, evaluate and improve: o Data analysis methods, monitoring equipment and technology, monitoring site locations, laboratory services, and lakes biological data collection Capitol Region Watershed District 2012 Monitoring Report 2


Chapter 2

Introduction

Capitol Region Watershed District (CRWD) is located in Ramsey County, Minnesota in the Twin Cities metropolitan area. CRWD is a special purpose unit of government formed in 1998 to manage and protect all water resources within the District boundaries. CRWD is a small subwatershed nested in the Upper Mississippi River basin with all runoff eventually discharging directly to the Mississippi River. CRWD contains portions of five cities, including: Falcon Heights, Lauderdale, Maplewood, Roseville, and Saint Paul (Figure 1). CRWD is highly urbanized with a population of 245,000 and 42% impervious surface coverage. Land use in the watershed is primarily residential with tracts of commercial, industrial, and institutional uses. Urban development in the watershed over time has significantly impacted the health and sustainability of the Mississippi River as well as CRWD lakes, wetlands, and streams. Impervious surfaces generate polluted stormwater runoff which causes poor water quality, increased peak storm flows, decreased groundwater recharge, increased flooding, and loss of aquatic and wildlife habitat. Subsequently, stormwater runoff is one of the most significant sources of pollution to CRWD water resources. It delivers fertilizers, pesticides, pet and wildlife waste, nutrients, sediment, heavy metals, and other anthropogenic pollutants to local water bodies. As stormwater runs off the urban landscape, it is collected and conveyed through an extensive network of underground storm sewer pipes that eventually drain to the Mississippi River. A total of 55 outlet pipes discharge into the thirteen mile stretch of the Mississippi River bordering CRWD. Both historical and current water quality data of CRWD lakes, ponds, and the Mississippi River indicate that these water bodies are impaired for various pollutants including nutrients, bacteria, and turbidity and are not meeting their designated uses for fishing, aquatic habitat, and recreation. The Mississippi River and Como Lake are listed on the Minnesota Pollution Control Agency’s (MPCA) 2010 303(d) list of impaired waters. Impaired waters require a total maximum daily load (TMDL) study, or pollution budget, for pollutants including bacteria, nutrients, perfluorooctane sulfonate (PFOS), polychlorinated biphenyls (PCBs), and turbidity (MPCA, 2010). The nutrient of primary concern in CRWD is phosphorus. Phosphorus is a biological nutrient which limits the growth of algae in most lakes and streams and is often found in high concentrations in stormwater. Phosphorus occurs naturally in the environment, but in excess, it can cause the overgrowth of algae and aquatic plants in lakes and rivers which reduces dissolved oxygen levels and increases turbidity of the water column. Common sources of phosphorous include fertilizers from lawns and gardens, leaves and grass clippings, pet and wildlife waste, automobile emissions, and wastewater treatment plant discharges. Sediment is another major constituent of stormwater runoff that negatively impacts water clarity and impairs benthic aquatic habitat. Its reduction or removal from stormwater is essential because other pollutants, such as phosphorus, adhere to sediment particles and are transported in suspension. Sediment originates from erosion of soil particles from construction sites, stream banks, and lake shores as well as sand application to streets, highways, and parking lots for deicing in the winter. Capitol Region Watershed District 2012 Monitoring Report 3


Heavy metals, such as lead and mercury, are also pollutants of concern in CRWD. Runoff from road surfaces is a significant contributor of heavy metals. Potential sources of metals include auto exhaust, tire wear, brakes, and some winter de-icing agents. Pathogens, which include bacteria and viruses, also contribute to the water quality degradation of CRWD water resources. They impact recreation and pose potential health risks to humans. Sources of pathogens include illicit sanitary connections to storm drains, and animal waste. CRWD was formed to understand and address these impacts and better protect and manage local water resources. In 2004, CRWD established a monitoring program to assess water quality and quantity of various subwatersheds and stormwater best management practices (BMPs) owned and/or operated and maintained by CRWD. Prior to the CRWD monitoring program, limited data was available on stormwater quantity and quality in the watershed. Since its establishment, the CRWD monitoring program has formed a foundation for initiatives, programs, and standards which allow for the characterization of District water resources and identification of water quality trends over time. The objectives of the program are to identify water quality problem areas, quantify the subwatershed runoff pollutant loadings to the Mississippi River, evaluate the effectiveness of BMPs, and provide data for the calibration of hydrologic, hydraulic, and water quality models. CRWD collects water quality and continuous flow data from major subwatersheds, stormwater ponds, lakes, and stormwater BMPs. There are a total of sixteen major subwatersheds in CRWD and monitoring is currently conducted in six subwatersheds (Figure 1). The six subwatersheds that are monitored include: • •

Como East Kittsondale

• •

McCarrons Phalen Creek

• •

St. Anthony Park Trout Brook

The CRWD 2012 Monitoring Report presents information on CRWD’s water quality monitoring program, including data collection methods and results for water quality and flow monitoring of subwatersheds, stormwater ponds, and lakes throughout the District. Four of the major subwatershed sites monitored by CRWD directly outlet to the Mississippi River. Five of the monitored minor subwatershed outlet sites are located within the Como, McCarrons, St. Anthony Park, and Trout Brook subwatersheds. Results and analysis of CRWD wetlands and stormwater BMPs are discussed in separate reports. An assessment of CRWD wetlands may be found in the 2008 CRWD Wetland Assessment Report (CRWD, 2009). A complete assessment of the effectiveness of stormwater BMPs within CRWD is presented in the BMP Performance and Cost-Benefit Analysis (CRWD, 2012).

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Figure 1. Capitol Region Watershed District. Capitol Region Watershed District 2012 Monitoring Report 5


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Chapter 3 3a

Stormwater Monitoring

Monitoring Locations

In 2012, CRWD collected water quality and quantity data at seventeen monitoring sites in the District: ten full water quality stations, two flow-only stations, and five level logger sites (Figure 2). Also, six precipitation gauges collected rainfall data across the watershed. At each full water quality station, both water quality and quantity data was collected. The ten full water quality stations were located at (Figure 2): 1) Upper watershed of the St. Anthony Park subwatershed as it drains through the Sarita Wetland (Sarita) 2) St. Anthony Park subwatershed (St. Anthony Park) 3) East Kittsondale subwatershed (East Kittsondale) 4) Phalen Creek subwatershed (Phalen Creek) 5) Como 7 subwatershed, (Como 7) 6) Como 7 subwatershed, (Como Park Regional Pond) 7) East Branch of the Trout Brook Storm Sewer Interceptor (Trout Brook – East Branch) 8) West Branch of the Trout Brook Storm Sewer Interceptor (Trout Brook – West Branch) 9) Outlet of the Trout Brook Storm Sewer Interceptor (Trout Brook Outlet) 10) Villa Park Wetland outlet, located in the lower western watershed of the Lake McCarrons subwatershed (Villa Park)

Four of the full water quality stations (2, 3, 4, and 9) are positioned at or near the outlets of subwatersheds which drain directly to the Mississippi River. The remaining six full water quality stations are located within four minor subwatersheds (Como, Lake McCarrons, St. Anthony Park, and Trout Brook subwatersheds). CRWD has 16 major subwatersheds. Two stations are operated at the outlets of Como Lake and Lake McCarrons to determine the amount of discharge from the lakes into the Trout Brook Storm Sewer Interceptor. A station is also operated at the emergency overflow structure for the Villa Park Wetland. Water level monitoring stations are also operated at four storm ponds in the Trout Brook subwatershed and the data is used to calibrate and update models for the Trout Brook Storm Sewer Interceptor. The storm ponds monitored are Arlington-Jackson, Sims-Agate, Westminster-Mississippi, and Willow Reserve (Figure 2). Six precipitation gauges are positioned throughout the watershed. They are located at Highland Park, the CRWD office, the Villa Park Outlet monitoring site, Saint Paul Fire Station No. 1, the Trout Brook East Branch monitoring site, and the Westminster-Mississippi stormwater pond (Figure 2). CRWD also obtains precipitation data reported by the Minnesota Climatology Research Group (University of Minnesota- St. Paul) and by the National Weather Service (NWS).

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Figure 2. Mississippi River Reference Site and 2012 CRWD Monitoring Sites.

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3b

Monitoring Methods and Analysis

3b.1 Data Collection Methods Full water quality stations consisted of an area-velocity sensor and an automated water sampler. The area-velocity sensors are secured to the base and center of the pipe or channel and connected to the automated water sampler housed above ground. Area-velocity sensors measured and recorded water depth and velocity every 10 minutes. This data was used to calculate discharge or water flow at the site. When the flow of water reached a specified depth or velocity, the sampler engaged to collect water samples. A sample was collected after a specified volume of water passed through the site in order to collect samples over the entire hydrograph. This provides a better representation of stormwater quality throughout the entirety of a storm or base flow event rather than taking a single grab sample. These individual samples were combined and mixed to produce a single composite sample. Two different sampler sizes were used: a compact sampler and a full-size sampler. A compact sampler can collect up to 48- 200 milliliter (mL) samples. A full-size sampler can take 96- 200 mL samples. To composite the samples, the sample bottles were shaken until sampled water became homogenous and the 200 mL samples collected in the sampler bottles (2 samples per bottle) were poured together into a 14-L churn sample splitter and thoroughly mixed to create a homogenous sample. Once mixed, the homogenous sample was distributed to seven sample bottles (with varying volumes) and submitted for analysis to Pace Analytical Services. Water quality samples were collected during storm events at the ten full water quality sites. With the exception of the Sarita, Como 7, and Como Regional Pond sites, monitoring stations had constant sustained baseflow during dry weather periods. Composite samples of this dry weather flow were also taken at these sites twice a month from March through November. During the winter, monthly baseflow grab samples were taken at all of the full water quality sites except for the Sarita, Como 7, and Como Regional Pond sites. Bacteria grab samples for Escherichia coli (E. coli) were taken at all sites during storm events depending on the time of day and precipitation amount. At the seven sites with baseflow, bacteria base grab samples were collected twice a month during dry weather from March through November and monthly during the winter. Bacteria grab samples for E. coli were collected directly into sterilized containers during storm events and baseflow periods and delivered immediately to the lab for analyses due to the short holding time (6 hours). After sample collection, water quality samples were delivered to Pace Analytical Services or the Metropolitan Council Environmental Services (MCES) Laboratory for analysis. The chemical parameters, method of analysis, and holding times are listed in Table 2. If the lab analysis occurred after the holding time of a given chemical parameter had expired, that chemical parameter was not analyzed. The flow-only stations positioned at the outlets of Como Lake and Lake McCarrons use two different methods to collect and determine discharge data. At the Como Lake outlet, flow is regulated by a wooden weir in a manhole. A level sensor was placed on the upstream side of the weir. When the level recorded exceeds the distance between the sensor and the weir, the structure was experiencing outflow. The volume was then calculated based on the dimensions of the weir (area) and the periods of recorded outflow (velocity). At the Lake McCarrons outlet, an area-velocity sensor connected to a data logger Capitol Region Watershed District 2012 Monitoring Report 9


collected and recorded water depth and velocity every ten minutes. This data was used to calculate discharge at the site. Level logger stations were operated at four storm ponds within the Trout Brook subwatershed (Figure 2, Table 1). The data collected at these sites is used to track pond level in relation to precipitation. Also, the data is used to calibrate the hydrologic and hydraulic model for the Trout Brook Storm Sewer Interceptor. A pressure transducer was secured at a known depth in the pond and connected to a data logger which continuously recorded stage every ten minutes. The logger locations were surveyed relative to a known benchmark, which allowed the stage data to be converted to true elevation. Precipitation was measured using automatic and manual rain gauges (Figure 2, Table 1). The Highland Park, Trout Brook - East Branch, and Saint Paul Fire Station No. 1 precipitation monitoring sites used automatic tipping bucket rain gauges which record precipitation amounts continuously during storm events. Manual rain gauges were used at the CRWD office, Villa Park, and Westminster-Mississippi locations. The manual rain gauge at the CRWD office was checked and emptied each workday. Manual rain gauges at the Villa Park and Westminster-Mississippi sites were checked and emptied after every storm event. Also, precipitation data was recorded every 15 minutes by the Minnesota Climatology Research Group at the St. Paul campus of the University of Minnesota. This data was used to determine daily, monthly, and annual rainfall amounts for the Capitol Region watershed. It is acknowledged that a low level of variability exists spatially and temporally for precipitation events within the District. However, previous watershed model calibration within the District has shown that the precipitation amount at this site adequately represents that data in the District.

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Table 1. Sites Monitored in 2012.

Site Name Como 7 Como Park Regional Pond East Kittsondale Phalen Creek Sarita St. Anthony Park Trout Brook - East Branch Trout Brook - West Branch Trout Brook Outlet Villa Park Como Outlet McCarrons Outlet Arlington-Jackson Sims-Agate Westminster-Mississippi Willow Reserve Villa Park Overflow Highland Park St. Paul Fire Station Trout Brook - East Branch CRWD Office Villa Park Westminster-Mississippi

Description Storm Sewer Storm Sewer Storm Sewer Storm Sewer Storm Sewer Storm Sewer Storm Sewer Storm Sewer Storm Sewer Wetland Lake Outlet Lake Outlet Storm Pond Storm Pond Storm Pond Storm Pond Wetland Precipitation Precipitation Precipitation Precipitation Precipitation Precipitation

Type Full Water Quality Full Water Quality Full Water Quality Full Water Quality Full Water Quality Full Water Quality Full Water Quality Full Water Quality Full Water Quality Full Water Quality Continuous Level Continuous Flow Continuous Level Continuous Level Continuous Level Continuous Level Continuous Level Automatic Gauge Automatic Gauge Automatic Gauge Manual Gauge Manual Gauge Manual Gauge

Capitol Region Watershed District 2012 Monitoring Report 11


Table 2.

Analysis Method, Reporting Limit, and Holding Times for Water Chemistry Parameters Analyzed by Pace Analytical and MCES Laboratory for 2012.

Parameter Orthophosphate as P Chloride Cadmium Chromium Copper Lead Potassium Nickel Zinc Nitrogen, Ammonia Nitrogen, Kjeldahl, Total Phosphorus Nitrate as N Nitrite as N Total Dissolved Solids Total Suspended Solids Total Volatile Solids Volatile Suspended Soilds Hardness Carbonaceous BOD, 5 day Sulfate Fluoride Calcium pH at 25 Degrees C

Analysis Method, Reporting Limit, and Holding Times for Water Chemistry Parameters Analyzed by Pace Analytical Abbreviation Method Reporting Limit Method Detection Limit Units Ortho-P SM 4500-P E 0.02 0.01 mg/L Cl SM 4500-Cl E 10 1 mg/L Cd EPA 200.8 0.00008 0.000028 mg/L Cr EPA 200.8 0.0005 0.000094 mg/L Cu EPA 200.8 0.0005 0.00025 mg/L Pb EPA 200.8 0.0001 0.000018 mg/L K EPA 200.8 0.02 0.0052 mg/L Ni EPA 200.8 0.0005 0.000091 mg/L Zn EPA 200.8 0.005 0.0025 mg/L NH3 EPA 350.1 0.04 0.02 mg/L TKN EPA 351.2 1 0.35 mg/L TP SM 4500-P E 0.1 0.05 mg/L NO3 SM 4500-NO3 H 0.1 0.1 mg/L NO2 SM 4500-NO2 B 0.1 0.05 mg/L TDS SM 2540C 20 10 mg/L TSS SM 2540D 4 2 mg/L TVS EPA 160.4 10 5 mg/L VSS SM 2540-E 1 mg/L Hardness EPA 200.8 0.071 0.0355 mg/L cBOD Hach 10360 Rev 1.1 2 1 mg/L SO4 ASTM D516-02 2.5 0.012 mg/L Fl EPA 300.0 0.1 0.012 mg/L Ca EPA 200.7 0.5 0.0072 mg/L pH SM 4500-H+B 0.1 0.05 Std. Units

Holding Time 48 hours 28 days 6 months 6 months 6 months 6 months 6 months 6 months 6 months 28 days 28 days 28 days 48 hours 48 hours 7 days 7 days 7 days 6 months 48 hours 28 days 28 days 6 months 15 minutes

EPA: Environmental Protection Agency SM: Standard Methods

Parameter Escherichia Coli

Analysis Method, Reporting Limit, and Holding Times for Water Chemistry Parameters Analyzed by Met Council Environmental Services Abbreviation Method Reporting Limit Method Detection Limit Units Holding Time E. coli Colilert and Colilert-18 with Quanti-Tray/2000 method NA 1 /100 mL MPN/100 mL 6 hours

3b.2 Monitoring Data Quality Assurance Six of the full water quality sites (St. Anthony Park, East Kittsondale, Phalen Creek, Trout Brook – East Branch, Trout Brook – West Branch, and Trout Brook Outlet) were monitored for the entire calendar year in 2012. That is, they had an automatic sampler installed from March to November, and a flow logger installed during the winter months from November to March. All other full water quality, flow logger, level logger, and precipitation monitoring sites were generally operational from April to November 2012. The full water quality sites that were installed for the entire year in 2012 collected data for an average of 350.3 days. CRWD achieved an average monitoring efficiency of 96% at the all-year full water quality sites in 2012, meaning that 96% of all potential data was collected during the calendar year (Appendix C, Table 44). Missing data accounted for the remaining 4% and is due to equipment failure, power failure, flooding, and vandalism. Monitoring at other sites was 100% efficient during the periods they were installed, except for Como 7, which had 99% efficiency. Sites with 100% efficiency included Villa Park, Sarita, and the continuous level monitoring sites. After the 2012 monitoring season was completed, flow data was quality checked and corrected by removing points with missing data or negative values and interpolating their values between good data Capitol Region Watershed District 2012 Monitoring Report 12


points. If there were extended periods of missing data in which there were no storm events, an average baseflow level and velocity were calculated and substituted. For missing storm events where velocity did not log accurately, a regression equation was developed using level and velocity data from good periods of stormflow record. The equation for the regression line was then used to determine velocity for those periods of missing data. If this was not possible or there were storm events during this time, the data was left as missing and not factored into discharge calculations. The 2012 water quality sample data reported by Pace Analytical and the MCES lab was also rigorously checked for quality. The reported sample times and dates were compared with field notes as well as the lab chain of custody forms. Also, any abnormally high or low sample values were denoted and crosschecked with field notes to ensure the parameter value was commensurate with the conditions of the day in which the sample was taken. Sample results that were reported with qualifiers by Pace, such as exceeded holding time, estimated values, below the lab reporting limit, or below the instrument detection limit, were identified and denoted in the lab results tables (Appendix A). It should be noted that the Pace reporting limit for TP in 2012 was 0.1 mg/L, which in comparison to CRWD lab data from previous years was reported at 0.01 mg/L by MCES. This change in lab reporting limits for TP was particularly noticeable when calculating TP average annual concentrations for baseflow samples since TP concentrations are typically below 0.1 mg/L during these flow events. Therefore, in order to make the 2012 TP data comparable to previous years, all TP values that were at the Pace reporting limit of 0.1 mg/L were halved and reported at 0.05 mg/L. The halved values were shown to have no statistical difference to TP data reported in previous CRWD monitoring years, which was independently verified by Barr Engineering in a detailed review and report of CRWD lab data (report dated May 2013) (Barr, 2013).

3b.3 Total Discharge and Pollutant Load Calculations For all full water quality monitoring sites, the stage, velocity, and water quality data collected were used to calculate total discharge and pollutant loads for total phosphorus (TP), and total suspended solids (TSS). Discharge and pollutant loads were calculated for each base, storm, snowmelt, and illicit discharge event at all sites, as well as total discharge and loads for the entire monitoring season. At the sites monitored all year, the totals represent annual discharges and loads. At Como 7, Sarita, and Villa Park, monitoring equipment cannot be operated during the winter months because equipment failure or damage can occur from freezing temperatures and ice formation. Also. Sarita and Como 7 do not have baseflow. The 2012 reported discharge and loads for these sites (Como 7, Sarita, and Villa Park) is only representative of March through November. Total discharge and pollutant loads for the Como 7 Subwatershed include combined data from the Como 7 monitoring site and the outlet for the Como Park Regional Pond. The outflow from the pond discharges into a storm sewer just downstream of the Como 7 monitoring site. Analysis of the combined Como 7 and Como Park Regional Pond Outlet site data was done in accordance with all other full water quality monitoring sites. For Villa Park, total discharge and pollutant loads also include any discharge flowing through the emergency overflow near the outlet of the wetland system. Capitol Region Watershed District 2012 Monitoring Report 13


3b.4 Total Flow and Pollutant Load Calculations Total discharge for each event was calculated using Isco Flowlink速 (Version 5.1) software. To begin calculating discharge, the flow data was separated into base, storm, snowmelt, and illicit discharge events. Next, discharge for every 10 minute time interval across the event was summed to determine total discharge for a particular event. TP and TSS loads were calculated for each interval using the following equation:

Where EMC = Event Mean Concentration (mg/L) cf=cubic feet (ft3) Total discharge and pollutant load subtotals were calculated for each event type (i.e. base, storm, snowmelt, and illicit discharge) for the entire monitoring season. Event discharge and TP and TSS loads for each event type were summed to produce total discharge and pollutant loads for the entire monitoring season.

3b.5 Flow Weighted Average (FWA) Concentration Calculations TP and TSS event concentrations were used to calculate TP and TSS loads for the corresponding sampled event interval. For those event intervals in which samples were not collected, an average concentration for TP or TSS was applied. The average concentration is the average of all samples collected, unless otherwise noted in the lab tables for each monitoring site, for a given event type (i.e. base, storm, snowmelt, or illicit discharge) for the entire monitoring season. Flow weighted averages (FWA) for TP and TSS were also calculated for each flow type for the entire monitoring season (i.e. storm flow-weighted average TP/TSS concentration) as well as for all interval types for the entire monitoring season (total flow weighted average). FWA concentrations take into account the differences between base and stormflow because pollutant concentrations tend to be higher during storm events. However, storm events generally account for less of the total annual discharge. FWA concentrations for TP and TSS for each flow type were calculated using the following equation:

Capitol Region Watershed District 2012 Monitoring Report 14


Total FWAs for TP and TSS for the entire monitoring season were calculated using the following equation:

3b.6 Pollutant Yield and Normalized Pollutant Yield Calculations To make useful and valid comparisons of stormwater monitoring data between 2012 full water quality data and previous monitoring years, the data was normalized to eliminate the influence of subwatershed size and annual precipitation. Annual yields for total discharge and total TP and TSS loads for each full water quality monitoring site were calculated. This allows for site-by-site comparisons of the monitoring data by removing the influence of drainage area. Water yields were calculated using the following equation:

Pollutant yields for TP and TSS were calculated using the following equation:

The total TP and TSS load data was also normalized to account for temporal and spatial differences in precipitation. By removing the influence of year-to-year variation in precipitation, trends of pollutants loads are more easily recognizable. Normalized pollutant yields were calculated in two steps. First, total runoff (in inches) was calculated for each full water quality monitoring site. The amount of runoff was calculated using the following equation:

Next the normalized TP and TSS yield was calculated. Normalized TP and TSS yields were calculated using the following equation:

Capitol Region Watershed District 2012 Monitoring Report 15


3b.7 Federal and State Surface Water Quality Standards Comparison At present, there are no federal or state water quality standards for stormwater. The Minnesota Pollution Control Agency (MPCA) and the U.S. Environmental Protection Agency (EPA) have established surface water quality standards for only certain water quality parameters. Regardless, CRWD’s stormwater flows into the Mississippi River, so it is useful to compare the stormwater data to surface water quality standards, which serve as a benchmark to consider for each pollutant (Table 3). TP and TSS Standards Because the MPCA has not established stormwater standards for TSS and TP, the data was compared to the TP and TSS values of Lambert’s Landing, a Mississippi River monitoring station just downstream of the District. Additionally, the TSS values were compared against the South Metro Mississippi Total Suspended Solids TMDL, and the TP values were compared against the Lake Pepin Excess Nutrient TMDL. When comparing CRWD TP and TSS concentrations to water quality standards, FWA concentrations were used. Chronic Metals Standards State water quality standards for chronic exposure to metals, are based on a function of hardness as outlined in Minnesota Rule 7050.0222 for Class 2B waters. Class 2B waters are waters used for the purpose of aquatic life and recreation that are not protected for drinking water. These standards are set at the lowest concentration of a chemical for which chronic exposure will cause harm to aquatic organisms. In order to make comparisons between CRWD metals data to state standards and other reference locations, calculation of the state standards was completed. Bacteria Standard For E. coli bacteria, the MPCA has set the following two provisions as a standard: 1. With greater than five samples taken in a calendar month (April to November), the E. coli concentration geometric mean shall be less than 126 cfu/100mL. 2. No more than ten percent of all samples taken during a calendar month (April to November) shall exceed 1,260 cfu/100mL CRWD collects a limited number of E. coli samples each month from April to November (two base samples and occasional storm samples), so the MPCA monitoring requirements of the E. coli geometric mean standard of 126 cfu/100mL cannot be typically met. Instead, CRWD compares individual E. coli monitoring results to the maximum value of the standard, 1,260 cfu/100mL. This comparison provides a benchmark only for comparing CRWD bacteria data and does not imply whether or not the full bacteria standard is being met. The MCES lab measures E. coli as the most probable number per 100 milliliters of water (mpn/100mL). Research shows that mpn/100mL is comparable to cfu/100mL (Massa et al., 2001).

Capitol Region Watershed District 2012 Monitoring Report 16


Table 3. Surface Water Quality Standards. Water Body Use/Exposure

Parameter Agency

Standard

Units

Cl

MPCA, 2011

Surface aquatic life & recreationc/chronicd

230

mg/L

Cd

MPCA, 2011

Surface aquatic life & recreationc/chronicd

NAe

mg/L

e

mg/L

e

mg/L

Cr

MPCA, 2011

c

d

c

d

Surface aquatic life & recreation /chronic

Cu

MPCA, 2011

Surface aquatic life & recreation /chronic

E. coli

MPCA, 2011

NH3

MPCA, 2011

Surface aquatic life & recreationc/chronicd c d Surface aquatic life & recreation /chronic

Ni

MPCA, 2010

Surface aquatic life & recreation /chronic

Pb

MPCA, 2010

d

c

d

c

d

c

d

NA

1,260f MPN/100 mL g 0.04 mg/L

MPCA, 1993

TSS

MPCA, 1993

a

Zn

MPCA, 2010

Stream

aquatic life & recreation /chronic

Stream

e

mg/L

e

mg/L

b

mg/L

b

mg/L

NA

Surface aquatic life & recreation /chronic a

TP

c

NA

NA 0.13

aquatic life & recreation /chronic c d Surface aquatic life & recreation /chronic

14 NAe

mg/L

a. MPCA document authored by McCollor and Heiskary (1993). b. NCHF ecoregion averages from minimally impacted streams (McCollor and Heiskary, 1993). c. Applies to Class 2B waters. d. Concentrations apply to chronic exposure. e. T he standard is a dependent on water hardness; See T able 41, in Appendix B for the calculated standards. f. Maximum value standard. g. T he standard

3b.8 Mississippi River Reference Site and Twin Cities Metro-Area Tributaries Comparisons In addition to comparing CRWD results to state surface water quality standards, CRWD total TP and TSS FWA concentrations were compared to the average TP and TSS concentrations of the Mississippi River at Lambert’s Landing (Figure 2). MCES monitors the Mississippi River at Lambert’s Landing, river mile 839.1, which is downstream from the Wabasha Street Bridge in St. Paul. MCES also monitors the mouths of several tributaries in the Minneapolis/St. Paul metropolitan area, including Bassett Creek, Battle Creek, Fish Creek and Minnehaha Creeks. These are all open channels that discharge to the Mississippi River. Total TP and TSS yields for CRWD subwatershed outlet sites (East Kittsondale, Phalen Creek, St. Anthony Park, and Trout Brook Outlet) were compared to the yields of these other metro-area tributaries to determine the relative impacts to the Mississippi River. CRWD yields are conservative estimates since monitoring is not always conducted for the full year at each site; whereas, MCES monitors the creek outlets for the entire year.

Capitol Region Watershed District 2012 Monitoring Report 17


3b.9 National Urban Stormwater Quality Comparisons Researchers from the University of Alabama and the Center for Watershed Protection have created an extensive database of stormwater data from urbanized areas by assembling and evaluating stormwater monitoring data from a representative number of National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) Phase I stormwater permit holders. The goals of the National Stormwater Quality Database (NSQD) are to describe the characteristics of national stormwater quality, to provide guidance for future sampling needs, and to enhance local stormwater management activities in areas having limited data. Over nearly a ten-year period, stormwater quality data from 3,765 storm events and 65 municipalities in 17 states including Minnesota was assembled and entered into the first version of the NSQD (Maestre and Pitt, 2005). The NSQD, Version 1.1 was extensively reviewed for quality assurance and control and statistical analyses were performed to characterize and understand the pollutant data. Although the NSQD, Version 1.1 includes only a small set of data from the Midwest and northeast portions of the country, which have similar climatic conditions, it still provides a useful comparison of how polluted stormwater in CRWD is compared to the rest of the country. The database includes stormwater quality data for various land use types including commercial, freeway, industrial, open space, residential, and several categories of mixed uses. Forty two percent of the land in CRWD is comprised of impervious surfaces with the predominant land uses of mixed residential, commercial, and industrial. CRWD’s stormwater quality data was compared to the NSQD’s mixed residential land use category, which has a median impervious percentage of 45%. The table below presents the NSQD median data values for the mixed residential land use category.

Table 4. NSQD Stormwater Median Values.

Parameter Area (acres) % Impervious Precipitation Depth (in.) Escherichia coli (mpn/100mL) Total Suspended Solids (mg/L) Total Phosphorous (mg/L) Ammonia (mg/L) Nitrate+Nitrite (mg/L) Total Kjeldahl Nitrogen (mg/L) Cadmium (mg/L) Chromium (mg/L) Copper (mg/L) Lead (mg/L) Nickel (mg/L) Zinc (mg/L)

Median Value 150.8 44.9 0.53 1,050 66 0.28 0.39 0.57 1.40 0.0009 0.0070 0.0160 0.0160 0.0078 0.0950

Capitol Region Watershed District 2012 Monitoring Report 18


3c

Climatological Summary

CRWD utilizes climatological data collected by the Minnesota Climatology Research Group (University of Minnesota—St. Paul) and by the National Weather Service (NWS) to assist with calculating annual precipitation, annual runoff, and annual loading. The Minnesota Climatology Research Group records precipitation every fifteen minutes from an automatic rain gauge located on the University of Minnesota—St. Paul Campus (UMN). This rain gauge is located approximately two miles west of the CRWD office. The data is reported on a public website (http://climate.umn.edu/). The 15-minute precipitation data was used to calculate hourly precipitation totals, monthly precipitation totals, and annual precipitation totals. Table 5 lists the annual precipitation totals for 2005 through 2012. Additionally, CRWD obtains daily precipitation totals from by a NWS weather station located at the Minneapolis-St. Paul International Airport. Data was retrieved weekly from a public website (http://www.nws.noaa.gov/climate/index.php?wfo=mpx). This weather station is located approximately ten miles south of the CRWD office. The 2005 to 2012 annual precipitation data was compared to the NWS 30-year normal values for the Minneapolis-St. Paul region in Table 5 and graphically in Figure 3. In reports published prior to 2011, the 30-year normal value of 29.41 inches was used, representing precipitation data from1971 to 2000. The NWS recalculates the 30-year normal every ten years, so in 2011 the value was changed to represent precipitation data from 1981 to 2010. The 30-year normal, calculated as 30.61 inches for the 1981 to 2010 time period, is used in all CRWD monitoring reports from 2011 and forward. Table 5. The 2005 to 2011 annual precipitation totals as compared to the NWS 30-year normal. Year 2005 2006 2007 2008 2009 2010 2011 2012 NWS 30-Year Normal (19812010) a

Precipitation (inches)a 35.98 31.69 29.72 21.67 23.34 36.32 33.62 30.26

Departure from NWS Normal (+) 5.37" (+) 1.08" (-) 0.89" (-) 8.94" (-) 7.27" (+) 5.71" (+) 3.01" (-) 0.35"

30.61

Annual precipitation reported by the Minnesota Climatology Research Group (UMN)

Capitol Region Watershed District 2012 Monitoring Report 19


40

35 30.61

Precipitation (inches)

30

25

20 36.32

35.98 31.69

15

33.62 30.26

29.72 21.67

10

23.34

5

0 2005

2006

2007

Precipitation (inches)

2008

2009

2010

2011

2012

NWS 30-Year Normal (1981-2010)

Figure 3. Annual precipitation totals (2005-2012) as compared to the NWS 30-year normal.

The total amount of precipitation for the 2012 calendar year (30.26 inches) was only 0.35 inches less than the NWS 30-year normal (30.61 inches). While the total precipitation amount was near the NWS 30-year normal, monthly precipitation totals greatly varied throughout the year. Figure 4 compares 2012 monthly precipitation totals to the long term monthly averages from 1981-2010 as reported by the National Climactic Data Center (Minneapolis-St. Paul). May 2012 was the wettest month (10.1 inches of rain), comprising 33% of the total annual precipitation amount for 2012 (Figure 4). Both May and July 2012 greatly exceeded the long term monthly averages whereas August through November 2012 had uncharacteristically low precipitation amounts. The months of August to November 2012 were unseasonably dry and drought-like. Thus, the majority of precipitation events in 2012 occurred from April to July 2012.

Capitol Region Watershed District 2012 Monitoring Report 20


11 2012 Monthly Precipitation Totals Long Term Monthly Averages

10 9 Precipitation (inches)

8 7 6 5 4 3 2 1 0 Jan

Feb

Mar

Apr

May June July Aug Sept 2012 Monthly Precipitation Totals

Oct

Figure 4. Monthly precipitation totals for 2012 in CRWD.

Capitol Region Watershed District 2012 Monitoring Report 21

Nov

Dec


3d

Summary of Results

The total precipitation measured in CRWD in 2012 (30.26 inches) was average in comparison to the 30year normal average (30.61 inches) (NWS, 2012). The months of May and July experienced the most rain, while January and September were the driest of months in 2012 (Figure 4). Total measured rainfall amounts were similar among all of the sites but were higher for sites monitored throughout the year due to a lengthier monitoring period (Table 6). During the 2012 monitoring period, CRWD stormwater monitoring sites had less total discharge than the two previous years (2010 and 2011) due to a decrease in total annual precipitation (Figure 5). Total discharge and water yield varied at individual monitoring sites depending on the cumulative number of days in the monitoring period and the total contributing drainage area. In 2012, total phosphorous (TP) concentrations generally increased at all monitoring sites (except Trout Brook Outlet) in comparison to 2011 TP average concentrations (Figure 9). The highest total TP loads were generated from the Trout Brook Outlet (4,162 lbs) and Trout Brook–West Branch (3,983 lbs) subwatersheds (Table 8). The Trout Brook-West Branch subwatershed generated the highest TP yield with 1.674 lb/ac (Table 8). The next highest TP yields for all monitored subwatersheds were Phalen Creek (1.026 lb/ac) and Trout Brook Outlet (0.828 lb/ac). Of the four major subwatershed outlet sites, the highest normalized TP pollutant yields were at East Kittsondale (0.056 lb/ac/in runoff). The 2012 total suspended solids (TSS) concentrations were comparable to the 2011 average concentrations with some sites increasing in concentrations and others decreasing (Figure 8). The highest total TSS loads were generated from the Trout Brook–West Branch (1,281,255 lbs) and Trout Brook Outlet (1,203,283 lbs) subwatersheds (Table 8). The Trout Brook–West Branch subwatershed generated the highest TSS yield (506 lb/ac). East Kittsondale (381 lb/ac) and Phalen Creek (295 lb/ac had the next highest TSS yields for all monitored subwatersheds. Of the four major subwatershed outlet sites, the highest normalized TSS pollutant yields were at East Kittsondale (28 lb/ac/in runoff). Compared to the Mississippi River at Lamberts Landing, CRWD sites were significantly more concentrated in pollutants (Table 9). CRWD sites also exceeded water quality standards for several nutrients (Table 9). Metals standards were exceeded during storm events, illicit discharges, and averaged yearly flows at some sites (Table 10). Compared to other metro-area tributaries, CRWD sites generally produced more pollutants per acre (Figures 18 and 19). Bacteria concentrations exceeded the maximum standard at all sites during most storm events (Table 12).

3d.1 Water Quantity Trout Brook Outlet and Trout Brook–West Branch subwatersheds exported the greatest volumes of water during the 2012 monitoring season with 482 million and 284 million cubic feet of discharge, respectively (Figure 5 and Table 8). The minor subwatershed sites (Como 7, Sarita, and Villa Park) exported the least amount of water because their drainage areas represent only a small portion of their major subwatershed (Table 8). For the Phalen Creek, Saint Anthony Park, Trout Brook–East Branch, Trout Brook–West Branch, and Trout Brook Outlet subwatersheds, baseflow accounted for more than Capitol Region Watershed District 2012 Monitoring Report 22


50% of the total discharge (Figure 6). The majority of Como 7 and Villa Park was comprised of stormflow. Discharge from Sarita was only generated from stormflow (Figure 6). Total water yield was highest at Trout Brook–West Branch (119,419 cf/ac), and Phalen Creek had the second highest water yield (112,705 cf/ac) (Figure 7). Although the total discharge at Trout Brook Outlet was higher than that of Trout Brook–West Branch and Phalen Creek, its water yield was the third highest because it has a greater drainage area (Figure 7). The lowest yields were generated from Como 7 and Sarita, which are among the smallest three subwatersheds.

Table 6. CRWD Monitoring Season Rainfall Amounts. Rainfall (inches)

Site

2005

2006

2007

2008

2009

2010

2011

2012

East Kittsondale

29.05

24.67

24.25

18.89

20.95

35.61

33.62

30.26

Phalen Creek

29.28

24.13

13.96

17.73

20.34

36.32

33.62

29.73

St. Anthony Park

28.27

24.13

23.99

9.95

18.72

26.84

29.24

29.71

23.87

23.92

17.91

20.63

36.27

33.43

30.01

Trout Brook-East Branch Trout Brook-West Branch

28.78

24.67

24.25

18.99

20.63

36.32

33.62

29.72

Trout Brook Outlet

29.28

24.67

24.23

15.54

20.95

36.32

24.53

30.26

Como 7

28.96

24.16

17.40

18.82

30.92

28.90

26.02

Sarita

18.19

23.19

17.64

18.72

30.62

28.90

26.16

Villa Park

24.66

24.16

19.45

19.11

31.32

28.90

26.38

Table 7. CRWD Total Monitoring Days.

Monitoring Days

Site

2005

2006

2007

2008

2009

2010

2011

2012

East Kittsondale

200

210

225

218

277

365

365

366

Phalen Creek

197

194

134

210

262

365

365

366

St. Anthony Park

191

192

215

126

218

230

269

366

191

217

212

273

365

349

366

Trout Brook-East Branch Trout Brook-West Branch

191

212

228

220

273

365

365

366

Trout Brook Outlet

198

211

226

198

277

365

344

366

Como 7

195

222

209

217

209

205

223

Sarita

159

227

203

213

205

203

228

Villa Park

204

228

223

220

212

211

232

Capitol Region Watershed District 2012 Monitoring Report 23


Figure 5. Total Discharge at CRWD Monitoring Sites, 2005 – 2012.

Capitol Region Watershed District 2012 Monitoring Report 24


Figure 6. Storm and Base Discharge at CRWD Monitoring Sites, 2012. Capitol Region Watershed District 2012 Monitoring Report 25


Figure 7. Total Water Yield at CRWD Monitoring Sites, 2005-2012. Capitol Region Watershed District 2012 Monitoring Report 26


3d.2 Total Suspended Solids, Total Phosphorus, and Nutrients Table 8 presents the complete water quality data set for all CRWD monitoring sites. The sites with the highest flow-weighted average (FWA) TSS concentrations in 2012 were East Kittsondale (123 mg/L) and Sarita (91 mg/L) (Figure 8). The lowest flow-weighted average TSS concentrations in 2012 were measured at Como 7 (34 mg/L) and Villa Park (31 mg/L). East Kittsondale, St. Anthony Park, Trout Brook – West Branch, and Sarita had higher flow-weighted average TSS concentrations than the Mississippi River at Lamberts Landing (Figure 8). All subwatersheds except Como 7 and Villa Park exceeded the South Metro Mississippi TSS Total Maximum Daily Load standard of 32 mg/L (Figure 8). The site with the highest flow-weighted average TP concentration was Como 7 at 0.287 mg/L (Table 8). However, the site had relatively low total flow (11,682,085 cf), so the total load was actually low compared to other sites (Figure 11). Sarita (0.252 mg/L) and East Kittsondale (0.245 mg/L) had the next highest flow-weighted average TP concentrations (Table 8). The sites with the lowest flow-weighted average TP concentrations were Trout Brook Outlet (0.138 mg/L) and St. Anthony Park (0.134 mg/L), (though it should be noted that St. Anthony Park was not operational for the majority of the year due to equipment failures from high water levels and the Mississippi River backing up in to the outfall, so data only represents 5 storm sampling events). Since 2005, CRWD major subwatershed sites have been more highly concentrated in TP than the MPCA Lake Pepin Excess Nutrient Total Maximum Daily Load target of 0.10 mg/L (Figure 9). In 2012, one of the four major subwatershed outlet sites, East Kittsondale, had higher FWA TP concentrations than the Mississippi River at Lambert’s Landing (Figure 9).Trout Brook—East Branch, Trout Brook—West Branch, Como 7, Sarita, and Villa Park all exceeded Lambert’s Landing FWA TP concentrations in 2012. TSS was transported during both baseflow and stormflow periods, however, the majority of TSS loading occurred during storm events (Figure 10). Baseflow generally has lower TSS concentrations because it includes flow contributions from groundwater, surface water bodies, and permitted industrial discharges. In addition, since velocity and flow volumes are lower during baseflow periods, water does not have as much ability to carry solids. Stormwater washes off streets, parking lots, and other impervious surfaces, and contains more TSS. During high flows, sediment is less likely to settle before reaching storm drains. Most of the TP loading in the subwatershed also occurred during storms, although the percentage resulting from stormflow is slightly smaller than for TSS (Figure 11). TP loading generally increases with TSS loading because phosphorus bonds to suspended solids, plant debris, and soil particles. However, TP also exists in soluble form, which does not attach to particles. Across CRWD, the greatest TSS yield in 2012 occurred in the Trout Brook – West Branch subwatershed (506 lb/ac) (Figures 12 and 14). East Kittsondale and Phalen Creek had the next highest TSS yields, 381 lb/ac and 295 lb/ac, respectively (Figures 12 and 14). The lowest TSS yields were from the smallest subwatersheds, Como 7 (31 lb/ac), Villa Park (32 lb/ac), and Sarita (38 lb/ac). Pollutant yields were normalized for the amount of stormwater runoff and expressed as lb/ac/in runoff to account for subwatershed drainage area and differences in precipitation amounts across the watershed. In 2012, the normalized TSS yields were highest at East Kittsondale (28 lb/ac/in runoff), Sarita (21 lb/ac/in runoff), and Trout Brook – West Branch (15 lb/ac/in runoff) (Figure 13). Normalized total TSS yields were lower than their historical average, except Sarita and Trout Brook – East Branch. The lowest Capitol Region Watershed District 2012 Monitoring Report 27


normalized TSS yield of 7 lb/ac/in runoff was exported from the Villa Park subwatershed (Figure 13). The normalized TSS yield for Trout Brook – West Branch was higher than Trout Brook Outlet, indicating that the West Branch of Trout Brook subwatershed was generating more pollutants on a per acre and per inch of runoff basis, which has been the trend historically (Figure 13). In 2012, the subwatersheds that generated the lowest TP load per acre were Sarita (0.106 lb/ac) and Villa Park (0.231 lb/ac) (Figures 15 and 17). The highest TP yields were generated in the Trout Brook – West Branch (1.674 lb/ac) and Phalen Creek (1.026 lb/ac) subwatersheds (Figures 15 and 17). Although East Kittsondale produced the highest normalized TSS yield in 2012, its normalized TP yield (0.056 lb/ac/in runoff), was third highest among all sites (Figure 16). Instead, Como 7 and Sarita (two smaller subwatershed monitoring sites) had the highest normalized total TP Yields with 0.065 and 0.057 lb/ac/in, respectively (Figure 16). This occurred because their flow-weighted average concentrations were dominated greatly by stormflow. Compared to the yields of four other metro-area tributaries, three of the four of CRWD’s major subwatershed outlet sites (East Kittsondale, Phalen Creek and Trout Brook) produced a greater TP yield per acre (Figure 19). The Saint Anthony Park subwatershed discharged less TP than Battle Creek and Fish Creek (Figure 19), but this can again likely be attributed to fewer sampling events in 2012 due to the river flooding. East Kittsondale, Phalen Creek, and Trout Brook Outlet all exceeded the metro area tributaries for TSS yield in lb/ac. St. Anthony was below Battle and Fish Creeks in TSS yield, but similarly, this is likely due to the small sample size. When comparing flows from CRWD outlets to other metro-area tributaries, it should be noted that the entire watershed is highly urbanized, with water flowing in pipes, whereas many of the other tributaries’ watersheds are partly undeveloped with water flowing in natural channels. Storm sewers operate differently than natural streams. When water velocity decreases, sediments settle out of the water column. In natural streams, this occurs when the stream meanders, flows through a vegetated area, gets wider, or reaches a relatively flat stretch. Storm sewers are designed to maintain velocity in the pipe; pipes have a set diameter, do not meander, and can change elevation quickly. In natural streams, nutrients are taken up by vegetation and algae, but there is no vegetation in storm sewers. As a result, most of the sediment and nutrients washed into storm sewers remain in the water column until the pipe reaches a body of water. Sediments and nutrients from streets and sidewalks are washed directly into the storm sewer and carried to the river. Average concentrations of TP, TSS, and ammonia from Trout Brook Outlet, East Kittsondale, Phalen Creek, and St. Anthony Park exceeded Lambert’s Landing concentrations and agency standards (Table 9). Also, concentrations of Total Kjedahl nitrogen (TKN), nitrite, chromium, copper, lead, nickel, zinc, and chloride at all four major subwatershed outlets (East Kittsondale, Phalen Creek, St. Anthony Park, and Trout Brook Outlet) exceeded concentrations at Lambert’s Landing (Table 9).

Capitol Region Watershed District 2012 Monitoring Report 28


Table 8. 2012 Monitoring Results Summary. 2012 Monitoring Results Summary

Subwatershed Area (acres) Total Rainfall (inches)

East St. Anthony Trout Brook- Trout Brook- Trout Brook Kittsondale Phalen Creek Park East Branch West Branch Outlet 1,116 3,418 1,433 932 2,379 5,028

Como 7 793

Sarita 929

Villa Park 753

30.26

29.73

29.71

30.01

29.72

30.26

26.02

26.16

26.38

360

348

334

357

344

359

222

228

232

Number of Storm Sampling Events

20

18

5

17

15

18

38

17

17

Number of Storm Intervals

40

40

30

34

50

48

55

33

36

Number of Monitoring Days

Number of Snowmelt Sampling Events

0

2

2

2

2

1

0

0

0

Number of Snowmelt Intervals

3

13

3

6

4

4

0

0

0

17 45

19 55

14 33

19 34

19 44

20 40

0 0

0 0

14 26

Total Discharge (Cubic Feet)

55,261,249

161,506,783

103,140,522

42,492,402

284,097,170

481,542,037

11,682,085

6,249,725

12,427,912

Storm Flow Subtotal (Cubic Feet)

36,530,284

41,442,850

37,566,038

15,359,967

114,260,205

167,030,961

11,524,712

6,249,725

9,898,813

0

0

101,222

0

0

0

157,373

0

0

5,740,510

3,153,892

3,099,892

2,496,397

3,067,371

3,307,320

0

0

0 2,529,099

Number of Base Sampling Events Number of Baseflow Intervals

Illicit Discharge Subtotal (Cubic Feet) Snowmelt Subtotal

12,990,455

116,910,040

62,373,370

24,636,038

166,769,594

311,203,756

0

0

Water Yield (cf/ac)

Baseflow Subtotal (Cubic Feet)

49,517

112,705

30,176

45,593

119,419

95,772

14,732

6,727

16,505

Storm Water Yield (cf/ac)

32,733

28,920

10,991

16,481

48,029

33,220

14,533

6,727

13,146

Snowmelt Water Yield (cf/ac) Baseflow Water Yield (cf/ac)

5,144 11,640

2,201 81,584

907 18,248

2,679 26,434

1,289 70,101

658 61,894

0 0

0 0

0 3,359

84

68

75

53

69

54

77

81

35

Total FWA TSS (mg/L)

Average TSS Concentration (mg/L)

123

42

63

54

68

43

34

91

31

Storm FWA TSS (mg/L)

160

141

71

109

133

97

34

91

34

5

6

53

19

23

13

-

-

19

Base FWA TSS (mg/L) Total TSS Load (lbs)

425,599

423,213

408,192

143,168

1,203,283

1,281,255

24,898

35,652

23,891

Storm TSS Load (lbs)

365,152

365,001

165,371

104,312

949,463

1,012,503

24,719

35,652

20,840

Snowmelt TSS Load (lbs)

56,334

15,357

34,992

10,019

11,167

25,491

-

-

-

Baseflow TSS Load (lbs)

4,113

42,855

206,376

28,837

242,653

243,260

-

-

3,051

381 28

295 10

119 14

154 12

506 15

255 10

31 8

38 21

32 7

Total TSS Yield (lb/ac) Normalized Total TSS Yield (lb/ac/in runoff) Average TP Concentration (mg/L)

0.187

0.207

0.133

0.222

0.242

0.175

0.399

0.238

0.321

Total FWA TP (mg/L)

0.245

0.146

0.134

0.207

0.225

0.138

0.287

0.252

0.224

Storm FWA TP (mg/L)

0.302

0.334

0.188

0.378

0.412

0.275

0.284

0.252

0.213

NA

NA

0.160

NA

NA

NA

0.525

-

-

0.054

0.073

0.101

0.090

0.095

0.062

-

-

0.266

Total TP Load (lbs)

845

1,470

867

550

3,983

4,162

209

98

174

Storm TP Load (lbs)

690

864

440

363

2,942

2,864

204

98

132

Snowmelt TP Load (lbs)

111

77

30

49

51

85

-

-

-

44

530

396

138

983

1,212

-

-

42

0.757 0.056

1.026 0.033

0.254 0.031

0.590 0.047

1.674 0.051

0.828 0.031

0.264 0.065

0.106 0.057

0.231 0.051

Illicit Discharge FWA TP (mg/L) Base FWA TP (mg/L)

Base TP Load (lbs) Total TP Yield (lb/ac) Normalized Total TP Yield (lb/ac/in runoff)

Capitol Region Watershed District 2012 Monitoring Report 29


Figure 8. Flow-Weighted Average TSS Concentrations at CRWD Monitoring Sites, 2005-2012. Capitol Region Watershed District 2012 Monitoring Report 30


Figure 9. Flow-Weighted Average TP Concentrations at CRWD Monitoring Sites, 2005-2012.

Capitol Region Watershed District 2012 Monitoring Report 31


Figure 10. Storm and Base TSS Loads at CRWD Monitoring Sites, 2012. Capitol Region Watershed District 2012 Monitoring Report 32


Figure 11. Storm and Base TP Loads at CRWD Monitoring Sites, 2012. Capitol Region Watershed District 2012 Monitoring Report 33


Figure 12. TSS Yields at CRWD Monitoring Sites. Capitol Region Watershed District 2012 Monitoring Report 34


Figure 13. Normalized TSS Yields at CRWD Monitoring Sites. Capitol Region Watershed District 2012 Monitoring Report 35


Figure 14. 2012 Normalized TSS Yields Across CRWD Monitored Subwatersheds. Capitol Region Watershed District 2012 Monitoring Report 36


Figure 15. TP Yields at CRWD Monitoring Sites. Capitol Region Watershed District 2012 Monitoring Report 37


Figure 16. Normalized TP Yields at CRWD Monitoring Sites. Capitol Region Watershed District 2012 Monitoring Report 38


Figure 17. 2012 Normalized TP Yields Across CRWD Monitored Subwatersheds. Capitol Region Watershed District 2012 Monitoring Report 39


500

East Kittsondale Phalen Creek St. Anthony Park Trout Brook Outlet

TSS Yield (lb/ac)

400

300

200

100

0 Basset

Battle

Fish

Creek Note: Non-CRWD data were collected in 2011 (MCES, 2013).

Figure 18. TSS Yields at Metro-Area Tributaries and CRWD Subwatershed Outlets.

Capitol Region Watershed District 2012 Monitoring Report 40

Minnehaha


Figure 19. TP Yields at Metro-Area Tributaries and CRWD Subwatershed Outlets. Capitol Region Watershed District 2012 Monitoring Report 41


Table 9. Pollutant Standards and Average Concentrations at CRWD Monitoring Sites and in the Mississippi River. Metropolitan Council Site

2012 CRWD Monitoring Sites

Standard (mg/L)

Lamberts Landing

East Kittsondale

Phalen Creek

0.13

0.10

0.19

0.21

0.13

0.17

14

31

83.5

68

83

54

0.04

0.04

0.21

0.22

0.31

0.25

NA

1.01

1.7

1.44

1.09

1.32

NA

1.06

0.56

0.62

0.57

0.50

NA

0.03

0.1

0.12

0.10

0.10

Cadmium

0.00020

0.00035

0.00017

0.00020

0.00015

Chromiumd

0.00046

0.00461

0.00378

0.00942

0.00290

0.00136

0.01476

0.01103

0.01793

0.00765

0.00040

0.01341

0.01791

0.00584

0.00772

0.00140

0.00349

0.00261

0.03872

0.00244

0.00370

0.09344

0.06620

0.06707

0.04610

26

205

164

123

116

TPa a

TSS

Ammonia

e

c

TKN

Nitrate Nitrite

c

c d

d

Copper Lead

d d

Nickel Zinc

d

Chloride

b

230

St. Anthony Trout Brook Park Outlet

a

T here are no numeric standards for T P and T SS. T hese values are NCHF ecoregion averages from minimally

impacted streams. b

Chloride standards are from the MPCA.

c

T here is no nitrate, nitrite, or T KN standard for surface water.

d

Metals standards are based on measured hardness values. See appendices for metals standards.

e

Ammonia standard is based on un-ionized ammonia, which varies and is dependent on temperature and pH

All numbers are in mg/L. Numbers highlighted in yellow exceed/equal Lambert's Landing concentrations, but not the standard. Numbers highlighted in red exceed/equal Lambert's Landing concentrations and the standard.

3d.3 Metals The MPCA standards for metals toxicity are a function of the water hardness of a sample; thus, the standard is not a set value and is instead based on the water hardness measured at an individual monitoring site. Appendix B lists the equations used to calculate metal standards for cadmium, chromium, copper, lead, nickel, and zinc at each monitoring site as a function of measured water hardness levels. A table of the calculated standards for each individual site for all metals is listed in Appendix B. Average concentrations of metals for each individual site were calculated for baseflow, stormflow, and total yearly flow (both baseflow and stormflow) and compared to the MPCA standards and Lambert’s Landing concentrations (Tables 9 and 10). Capitol Region Watershed District 2012 Monitoring Report 42


According to the MPCA standards, the average storm concentrations of lead at all sites (except Villa Park) exceeded toxicity standards in 2012 (Table 10). The 2012 yearly average concentrations for lead exceeded toxicity standards at East Kittsondale, Phalen Creek, Trout Brook _ West Branch, Como 7 and Sarita (Table 10). Yearly concentrations of lead also exceeded the Mississippi River concentrations at Lambert’s Landing for East Kittsondale, Phalen Creek, St. Anthony Park, and Trout Brook Outlet (Table 9). Average baseflow concentrations of lead never exceeded the toxicity standard at any site in 2012. The average storm concentrations of copper at all sites (except Villa Park) exceeded toxicity standards in 2012. However, the 2012 yearly average concentrations of copper only exceeded the toxicity standard at Como 7 and Sarita (Table 10). Yearly concentrations of copper also exceeded the Mississippi River concentrations at Lambert’s Landing for East Kittsondale, Phalen Creek, St. Anthony Park, and Trout Brook Outlet (Table 9). Average baseflow concentrations of copper never exceeded the toxicity standard at any site in 2012. In addition, average storm concentrations of zinc exceeded the chronic toxicity standard at East Kittsondale and Como 7 in 2012 (Table 10). The 2012 yearly average concentration of zinc was only exceeded at Como 7 (Table 10). Average concentrations of zinc exceeded the Mississippi River concentrations at Lambert’s Landing for East Kittsondale, Phalen Creek, St. Anthony Park, and Trout Brook Outlet (Table 9). Average baseflow concentrations of zinc never exceeded the toxicity standard at any site in 2012. For all sites, average concentrations of cadmium, chromium, and nickel for all flow types (base, storm, and yearly) did not exceed the MPCA toxicity standards in 2012 (Table 10). However, yearly concentrations of Cadmium exceeded the Mississippi River concentrations at Lambert’s Landing for East Kittsondale and St. Anthony Park (Table 9). Chromium and nickel concentrations at all major subwatershed outlets were also greater than those reported at Lambert’s Landing (Table 9), but did not exceed the state standard.

3d.4 Chloride Chloride was sampled for at all monitoring sites in 2012. Average chloride concentration were calculated and compared to the MPCA standards and Lambert’s Landing concentrations (Tables 9 and 10). All sites met the MPCA toxicity standard of 230 mg/L for chloride (Table 9). However, yearly chloride concentrations at East Kittsondale, Phalen Creek, St. Anthony Park, and Trout Brook Outlet exceeded the Mississippi River concentrations at Lambert’s Landing (Table 9). In general, all CRWD sites recorder higher chloride concentrations during spring snowmelt events due to winter road salt application.

3d.5 Bacteria E. coli samples were extracted during baseflow, stormflow, and illicit discharge periods. For baseflow periods, E. coli concentrations at most monitoring sites did not exceed the MPCA maximum numeric standard of 1,260 cfu/100mL with the exception of a few sites on isolated Capitol Region Watershed District 2012 Monitoring Report 43


occurrences (Trout Brook-East Branch, Trout Brook-West Branch, and Villa Park) (Table 11). One illicit discharge sample from Como 7 was extracted and analyzed for E. coli and significantly exceeded the standard at 101,400 cfu/100mL (Table 11). During stormflow events, the majority of samples for all sites exceeded the MPCA maximum numeric standard of 1,260 cfu/100mL for bacteria (Table 12). Only 6 samples out of a total of 48 samples at the nine monitoring sites were less than the maximum standard for E. coli bacteria. Otherwise, stormflow E. coli concentrations ranged from 1,000 mpn/100mL to 204,600 mpn/100mL with the maximum concentration at a subwatershed outlet occurring at Trout Brook Outlet on 8/15/2012 at 104,600 cfu/100mL (Table 12).

3d.6 Summary Comparison of CRWD Stormwater Data and NSQD Data Table 13 compares stormwater pollutant median concentrations from CRWD and the National Stormwater Quality Database (NSQD). Compared to other urbanized areas in the country, CRWD 2012 stormwater mean concentrations for TSS, TP, and E. coli 2012 exceeded NSQD median concentrations for mixed-residential areas. In 2012, E. coli mean concentrations at all CRWD monitoring sites were higher than the NSQD median concentration of 1,050 mpn/100mL for E. coli. Sarita had the highest annual average concentration of 45,100 mpn/100mL. CRWD stormflow median TSS concentrations at four of the nine sites were higher than then NSQD median concentration of 66 mg/L. Trout Brook – East Branch, St. Anthony Park, Como 7, Sarita, and Villa Park had TSS median concentrations lower than the NSQD median concentration. East Kittsondale, Trout Brook – East Branch, Trout Brook – West Branch, and Como 7 had higher median concentrations of total phosphorus than the NSQD median concentration of 0.28 mg/L. TP median concentrations in CRWD ranged from 0.160 mg/L (St. Anthony Park) to 0.390 mg/L (Trout Brook – West Branch). For ammonia, all sites were below the NSQD median concentration of 0.39 mg/L. Similarly for Nitrate+Nitrite, all sites were below the NSQD median concentration of 0.57 mg/L. Median TKN concentrations at East Kittsondale, Phalen Creek, Trout Brook – West Branch, and Como 7 were greater than the NSQD median concentration of 1.4 mg/L. The comparisons between median concentrations for numerous metals in CRWD and the NSQD were varied. All sites had median nickel storm concentrations that were lower than the NSQD median concentration of 0.0078 mg/L. All sites had median cadmium concentrations that were lower than the NSQD median concentration of 0.0009 mg/L. Of the four major subwatershed sites, East Kittsondale was the only subwatershed that exceeded the NSQD median concentrations for chromium (0.0070 mg/L), copper (0.0160 mg/L), and zinc (0.1370 mg/L). East Kittsondale, Phalen Creek, and Trout Brook—West Branch all exceeded the NSQD median concentrations for lead (0.0160 mg/L). Capitol Region Watershed District 2012 Monitoring Report 44


Table 10. 2012 Metals Concentrations and exceedances at CRWD Monitoring Sites and in the Mississippi River (mg/L).

Parameter

Average

Base Illicit Discharge Cadmium Storm Yearly Base Illicit Discharge Chromium Storm Yearly Base Illicit Discharge Copper Storm Yearly Base Illicit Discharge Lead Storm Yearly Base Illicit Discharge Nickel Storm Yearly Base Illicit Discharge Zinc Storm Yearly

Lambert's East Landing Kittsondale 0.0005

Phalen Creek 0.0001

0.0002

0.0002 0.0003 0.0009

0.0002 0.0002 0.0011

0.0005

0.0083 0.0046 0.0039

0.0061 0.0038 0.0015

0.0014

0.0257 0.0148 0.0008

0.0192 0.0110 0.0011

0.0004

0.0260 0.0134 0.0020

0.0324 0.0179 0.0009

0.0014

0.0037

0.0050 0.0035 0.0518 0.1351 0.0934

0.0041 0.0026 0.0126 0.1125 0.0662

St. Anthony Park 0.0002 0.0005 0.0002 0.0002 0.0101 0.0156 0.0056 0.0094 0.0160 0.0639 0.0160 0.0179 0.0022 0.0108 0.0105 0.0058 0.0451 0.0675 0.0061 0.0387 0.0551 0.1970 0.0761 0.0671

Trout Brook East Branch 0.0002

Trout Brook West Branch 0.0001

Trout Brook Outlet 0.0001

0.0002 0.0002 0.0013

0.0002 0.0002 0.0017

0.0002 0.0002 0.0011

0.0057 0.0034 0.0029

0.0057 0.0034 0.0043

0.0049 0.0029 0.0023

0.0134 0.0079 0.0025

0.0167 0.0094 0.0038

0.0138 0.0076 0.0018

0.0158 0.0087 0.0030

0.0173 0.0094 0.0016

0.0146 0.0077 0.0015

0.0041 0.0035 0.1246 0.0623 0.0924

0.0046 0.0028 0.0171 0.0845 0.0447

0.0035 0.0024 0.0249 0.0709 0.0461

CRWD site concentrations are from 2012; river concentrations are from 2001-2010. Red-highlighted cells are sites which exceeded the MPCA chronic standard for surface waters. See appendices for metals standards. NA: Not available, these sites were not monitored or sampled for Illicit Discharges

Capitol Region Watershed District 2012 Monitoring Report 45

Como 7

Sarita

Villa Park 0.0001

0.0001 0.0002 0.0002

0.0001 0.0001

0.0001 0.0001 0.0008

0.0010 0.0050 0.0053

0.0034 0.0034

0.0016 0.0012 0.0014

0.0042 0.0133 0.0140

0.0075 0.0075

0.0030 0.0022 0.0019

0.0009 0.0144 0.0143

0.0085 0.0085

0.0044 0.0031 0.0012

0.0011 0.0042 0.0044

0.0027 0.0027

0.0017 0.0014 0.0129

0.0236 0.0943 0.0979

0.0448 0.0448

0.0210 0.0171


Table 11. 2012 Baseflow Grab E. coli Concentrations at CRWD Monitoring Sites (mpn/100mL). Site Sample Date 01/04/2012 10:00 02/08/2012 09:45 02/09/2012 08:20 03/13/2012 09:35 03/19/2012 09:10 03/29/2012 10:35 04/24/2012 09:15 05/10/2012 11:00 05/11/2012 08:20 05/22/2012 08:40 06/04/2012 08:50 06/22/2012 08:45 07/02/2012 09:06 07/16/2012 09:00 07/31/2012 09:45 08/13/2012 09:38 08/27/2012 09:40 09/10/2012 09:00 09/24/2012 09:10 10/10/2012 09:15 10/30/2012 09:25 11/29/2012 09:25 12/21/2012 09:30

East Kittsondale 19 8 NS NS NS 6 1 NS 26 89 89 111 461 261 345 75 96 488 325 71 43 8 22

Phalen Creek 46 1 NS NS 9 NS 2 14 NS 44 24 34 46 21 39 15 179 36 28 84 26 6 6

St. Anthony Trout Brook- Trout Brook- Trout Brook Park East Branch West Branch Outlet Villa Park Outlet Villa Park In 127 31 687 397 70 4 17 NS NS NS 687 14 NS 26 770 233 NS NS NS 140 86 161 NS NS NS NS NS 66 NS NS NS NS NS NS NS NS 56 4,100 124 56 19 27 52 138 107 199 52 28 NS NS NS NS NS NS 285 2,420 276 548 196 5,200 68 921 154 123 276 25 192 472 88 118 365 649 41 579 326 178 2,420 1,267 48 225 387 228 980 649 21 387 166 142 411 151 28 291 238 210 144 29 38 137 249 133 173 435 30 219 5,200 579 1,120 56 24 111 1,986 345 146 58 1,197 96 291 186 488 133 46 172 345 649 435 2,420 32 126 201 133 64 4 53 205 9 41 7,500 687

NS: No sample collected Value exceeds MPCA maximum numeric standard (1,260 cfu/100mL).

Capitol Region Watershed District 2012 Monitoring Report 46

Como 7 NS NS NS NS NS NS NS NS NS NS NS NS NS NS 101,400 NS NS NS NS NS NS NS NS


Table 12. 2012 Stormflow Grab E. coli Concentrations at CRWD Monitoring Sites (mpn/100mL).

Site Sample Date

East Kittsondale

Phalen Creek

St. Anthony Trout Brook- Trout Brook- Trout Brook Park East Branch West Branch Outlet

03/22/2012 10:15 NS NS NS NS NS 05/03/2012 10:25 NS NS NS 687 12,100 05/24/2012 08:20 1,986 8,500 3,000 1,200 2,420 06/14/2012 10:10 5,200 9,700 411 19,500 25,600 07/24/2012 08:50 7,300 4,100 2,203 8,600 2,420 08/15/2012 09:10 9,800 93,300 33,100 NS NS 10/25/2012 09:15 7,500 16,900 27,200 14,600 2,420 NS: No sample collected Value exceeds MPCA maximum numeric standard (1,260 cfu/100mL).

NS NS 2,000 16,100 4,100 104,600 13,400

Villa Park Out

Villa Park In

Como 7

Sarita

NS NS 1,000 1,733 5,200 NS 28,800

NS NS 1,986 1,120 1,203 NS 23,100

7,500 7,500 11,000 7,500 2,420 NS 93,300

NS NS 75,400 14,800 3,100

Capitol Region Watershed District 2012 Monitoring Report 47

204,600


Table 13. CRWD 2012 Stormwater Median Water Quality Data versus NSQD Median Data. NSQD East Mixed Kittsondale Residential

Parameters Area (acre) % Impervious Escherichia coli (mpn/100mL) Total Suspended Solids (mg/L) Total Phosphorous (mg/L) Ammonia (mg/L) Nitrate+Nitrite (mg/L) Total Kjeldahl Nitrogen (mg/L) Cadmium (mg/L) Chromium (mg/L) Copper (mg/L) Lead (mg/L) Nickel (mg/L) Zinc (mg/L)

151 45 1,050 66 0.280 0.39 0.57 1.40 0.0009 0.0070 0.0160 0.0160 0.0078 0.0950

1,116 46 7,300 127 0.295 0.27 0.38 1.70 0.0002 0.0074 0.0241 0.0266 0.0045 0.1370

Phalen Creek 1,433 50 9,700 97 0.270 0.23 0.43 1.50 0.0002 0.0060 0.0168 0.0319 0.0035 0.0948

Trout Trout St. Anthony Brook - Brook East Park West Branch Branch 3,418 932 2,379 48 3,000 8,600 2,420 57 56 134 0.160 0.380 0.390 0.32 0.21 0.16 0.42 0.38 0.39 1.00 1.20 1.60 0.0001 0.0001 0.0002 0.0055 0.0039 0.0064 0.0103 0.0100 0.0197 0.0082 0.0080 0.0176 0.0030 0.0026 0.0050 0.0491 0.0504 0.0999

Numbers highlighted in red exceed the NSQD value.

Capitol Region Watershed District 2012 Monitoring Report 48

Trout Brook Outlet 5,028 40 13,400 90 0.275 0.17 0.46 1.20 0.0002 0.0046 0.0122 0.0123 0.0031 0.0556

Como 7

Sarita

Villa Park

793

929

753

7,500 48 0.285 0.35 0.24 1.60 0.0001 0.0027 0.0069 0.0059 0.0017 0.0544

45,100 37 0.260 0.34 0.40 1.20 0.0001 0.0023 0.0060 0.0065 0.0020 0.0400

3,466 12 0.200 0.25 0.10 1.05 0.0001 0.0009 0.0016 0.0011 0.0010 0.0146


Chapter 4 4a

Lake Water Quality Monitoring

Introduction

There are five lakes within the boundaries of CRWD: Como Lake, Crosby Lake, Little Crosby Lake, Loeb Lake, and Lake McCarrons (Figure 2). The lakes are monitored by Ramsey County Public Works (RCPW) and CRWD to assess overall health and to determine if each lake supports their designated uses for swimming, fishing, and/or aesthetics. With the exception of Loeb Lake, all of the lakes receive stormwater runoff and ultimately drain to the Mississippi River. Como Lake, Crosby Lake, Little Crosby Lake, and Loeb Lake are classified as shallow lakes and Lake McCarrons is classified as a deep lake. Shallow lakes are defined as those lakes which have a maximum depth less than fifteen feet or those in which more than 80% of the lake is within the littoral zone. The littoral zone is the area of the lake in which plants grow. Deep lakes are defined as those lakes in which the maximum depth is greater than fifteen feet or those in which less than 80% of the lake is in the littoral zone.

4a.1 Como Lake Como Lake is a 67-acre lake with a maximum depth of 15.5 feet and is located in the City of Saint Paul. Surrounding land uses are primarily residential and parkland. Como Lake is classified as a shallow lake because nearly 100% of the lake is in the littoral zone. The lake has been monitored since 1984, and although water quality has improved slightly over time, there has been significant annual variation in water quality. In effort to improve water quality in the lake, the Como Lake Strategic Management Plan was developed in 2002 (CRWD, 2002). Since 2002, Como Lake has been listed as impaired on the Minnesota Pollution Control Agency’s (MPCA) 303(d) list for excess nutrients (MPCA, 2012).

4a.2 Crosby Lake & Little Crosby Lake Crosby Lake is a 48-acre shallow lake that is situated in the Mississippi River floodplain in Saint Paul and is part of the Crosby Farm Regional Park and the Mississippi River National River and Recreation Area. The lake is divided into two separate water bodies by a trail: Crosby Lake and Little (or Upper) Crosby Lake. Crosby Lake is classified as a shallow lake because it has a maximum depth of 19 feet and the littoral zone covers 97% of the lake area. Little Crosby Lake is a small lake with a maximum depth of 34 feet. However, 90% of its area is littoral (<15 feet in depth). The surrounding land uses for both water bodies are primarily parkland, single family residential, and industrial. Crosby Lake and Little Crosby Lake are periodically flooded by the Mississippi River (a 3-year storm event, or when the river reaches 49,000 cfs). Crosby Lake has been monitored by RCPW and CRWD since 2005. Little Crosby Lake was monitored for the first time in 2011. Both Crosby Lake and Little Crosby Lake are not currently listed on the MPCA 303(d) list of impaired waters.

Capitol Region Watershed District 2012 Monitoring Report 49


4a.3 Loeb Lake Loeb Lake is a 9-acre shallow lake with a maximum depth of 28 feet located in Marydale Park in the City of Saint Paul. Surrounding land uses are predominately mixed residential and parkland. Loeb Lake has been monitored by RCPW and CRWD since 2003 (with the exception of 2004). Loeb Lake is considered to be an unimpaired water body and is not currently listed on the MPCA 303(d) list.

4a.4 Lake McCarrons Located in the City of Roseville, Lake McCarrons is a 68-acre lake with a maximum depth of 57 feet. It is considered a deep lake with less than 36% of the lake area located in the littoral zone. Lake McCarrons has a surrounding land use of mostly mixed residential and open space. Lake McCarrons has been monitored since 1988 by RCPW. Lake McCarrons received an alum treatment in 2004 and water quality of the lake has shown improvement since. The lake is considered to be an unimpaired water body and is not currently listed on the MPCA 303(d) list of impaired waters.

4b

Methods

The 2012 lake water quality data (and all years preceding) was collected by RCPW. Samples and data were collected throughout the growing season (May through September) on a monthly or bi-weekly basis. At each lake, RCPW collected water samples and measured water quality parameters (temperature, dissolved oxygen, pH, and water transparency). Water samples were collected from discrete depths within the epilimnion, or mixed water layer. If thermal stratification was present, additional water samples were collected from the thermocline and the hypolimnion. The water samples were analyzed by RCPW for chlorophyll-a (Chl-a), phaeophytin-a (Phaeo-a), total phosphorous (TP), soluble reactive phosphorous (SRP), total Kjeldahl nitrogen (TKN), nitrate (NO3), chloride ion concentrations (Cl), and ammonia (NH3). The primary pollutant of concern to CRWD lakes is total phosphorus (TP). Phosphorus occurs naturally in the environment and is an essential biological nutrient associated with the growth of aquatic plants. In excess, phosphorus in lakes can cause algal blooms and growth of nuisance aquatic macrophytes, which can be detrimental to aquatic health. Common anthropogenic sources of phosphorus include fertilizers from lawns, golf courses, and other treated open spaces, detergents from residential and commercial car washes, animal waste, and sewage from illicit connections. CRWD is within the Northern Central Hardwood Forest (NCHF) ecoregion. It is one of seven ecoregions in Minnesota and is characterized as an area with fertile soils with agriculture as the dominant land use in rural areas. In most lakes in the NCHF ecoregion, phosphorous is the least available nutrient; therefore, the concentration of phosphorous controls the extent of algal growth. Algal growth in turn affects the clarity and recreational potential of lakes. Chlorophyll-a is a pigment present in algae. Measuring chlorophyll-a concentration is a proxy for measuring algal population. Algal blooms can make recreation unpleasant and certain species are toxic Capitol Region Watershed District 2012 Monitoring Report 50


to humans and other animals. In addition, as algae die and decompose, oxygen is removed from the water column. Chronic low dissolved oxygen concentrations (<5 mg/L) may result in fish kills and low diversity of aquatic species. Water transparency, or water clarity, was determined with the use of a Secchi disk. A Secchi disk is a black and white patterned disk that is connected to a line or pole. To take a measurement, the Secchi disk is lowered slowly into the water column until the pattern is no longer visible. The depth at which the disk is no longer visible is then recorded. This measurement is commonly referred to as Secchi depth. A shallower Secchi depth measurement typically indicates poor water clarity as a result of increased turbidity caused by suspended sediments, organic matter, and/or phytoplankton (algae). A lake is considered eutrophic if it has high nutrient levels, low dissolved oxygen concentrations, and frequent algal blooms. Although some lakes are naturally eutrophic, many have become eutrophic as a result of anthropogenic activities. In order to identify eutrophic water bodies in Minnesota, the MPCA established eutrophication numeric water quality standards in lakes for TP, Secchi depth, and chlorophyll-a (Table 14) (MPCA, 2008). In the NCHF ecoregion, a different standard exists for shallow and deep lakes (Table 14). For a lake to be considered unimpaired, and not eutrophic under the MPCA standards, it is required to meet the standard for both TP and either the Secchi depth or chlorophyll-a. Lakes that do not meet the standards may be placed on the MPCA 303(d) list of impaired waters. To account for differences in natural trophic state, the standards vary by ecoregion and lake type.

Table 14. Deep and Shallow Lake State Water Quality Standards (MPCA, 2008). Parameter TP Chl-a Secchi depth

Agency MPCA, 2008 MPCA, 2008 MPCA, 2008

Use/Exposure aquatic life & recreation/nutrients aquatic life & recreation/nutrients aquatic life & recreation/nutrients

Deep Lake Standard < 0.04 < 14 ≥ 1.4

Shallow Lake Standard < 0.06 < 20 ≥ 1.0

Units mg/L µg/L m

a. Applies to Class 2B waters: those suitable for warm and cool water fish and other aquatic life and for human recreation. b. Excess nutrients can negatively impact recreation and aquatic life - the standards are threshold levels.

4c

Results and Analysis

4c.1 Summary of Results During the 2012 growing season (May through September), Secchi depths and TP and Chl-a concentrations fluctuated and followed different patterns for the each monitored lake (Figures 20-24). In general, Secchi depths were lowest in the middle of the 2012 growing season. Chl-a concentrations were generally highest in the middle of the 2012 growing season. TP concentrations followed different trends for each lake during the 2012 growing season. The 2012 growing season averages for Secchi depth and TP and Chl-a concentrations were compared against the MPCA eutrophication numeric water quality standards. Loeb Lake met the shallow lake Capitol Region Watershed District 2012 Monitoring Report 51


standards and Lake McCarrons met the deep lake standards for all parameters. Both Crosby Lake and Little Crosby Lake met the shallow lake standards for Chl-a concentration and Secchi depth, while they both failed for TP concentration. Como Lake did not meet any of the shallow lake standards for Secchi depth,TP, and Chl-a concentrations during 2012 growing season. During the 2012 growing season, some of the lakes improved in eutrophication parameters, while some lakes degraded compared to historical averages. Como Lake was more degraded all around as the TP and Chl-a concentrations were higher and the Secchi depth was lower than the historical averages (Figure 28). Crosby Lake had a higher TP concentration (Figure 25), lower Chl-a concentration (Figure 26), and a similar Secchi depth compared to the historical average (Figures 27). Compared to 2011, the first year Little Crosby Lake was monitored, Little Crosby Lake improved on eutrophication standard parameters; the TP and Chl-a concentrations decreased and the Secchi depth increased (Figure 30). Similar to previous years, Loeb Lake did not change significantly. For Loeb Lake, the TP concentration was slightly higher, the Chl-a concentration was slightly lower, and the Secchi depth was slightly lower (Figure 31). Lake McCarrons improved in all eutrophication parameters in comparison to historical averages of TP (Figure 25), Chl-a (Figure 26), and Secchi depth (Figure 27). It should be noted that additional analysis of biological data is required in order to make definitive conclusions on the causes of water quality changes and trends over time for each District lake. The water quality parameters that are currently sampled for only provide indication of water quality, not causation. Additional analysis of biological data would require information on: fisheries, macrophytes, zooplankton, phytoplankton, and others. At present, this data is not regularly sampled for in CRWD lakes.

4c.2 Como Lake Results In 2012, Como Lake was sampled eight times from 5/2/2012 to 9/13/2012 (Figure 20). The first sample on 5/2/2012 had an exceptionally high TP value of 0.970 mg/L in comparison to the average of the other 2012 samples (0.248 mg/L). This high TP value from 5/2/2012 is uncharacteristic of Como Lake and is considered an outlier, but was left in for data reporting purposes. Subsequently, the annual average TP in Como Lake for 2012 is higher than the historical average. Disregarding the high TP value in May 2012, TP concentrations peaked in early- and mid-August. The Chl-a concentration varied, but generally increased through August and decreased in September. The Secchi depth was lowest in early August, and was very inversely proportional to the TP concentrations (as TP levels increased, the Secchi depth decreased). This provides good evidence that phosphorus is the primary driver for lake water transparency in Como Lake. The 2012 growing season average values at Como Lake for TP, Chl-a, and Secchi depth were 0.338 mg/L, 41.5 Âľg/L, and 0.7 meters, respectively (Table 15 and Figures 25, 26, and 27). Thus, Como Lake did not meet any of the shallow lake standards for TP, Chl-a, and Secchi depth (Table 14). It should be noted that the historical average (1984-2011) for Como Lake exceeds the Minnesota standards for TP and Chl-a. In comparison to historical averages from 1984 to 2011, Como Lake was lower in water quality for all three of the parameters for eutrophication in 2012 (Table 15, Figures 25, 26, and 27). The TP Capitol Region Watershed District 2012 Monitoring Report 52


concentration was 101% higher than the historical average of 0.168 mg/L, with a near record concentration of 0.338 mg/L. The only year to have a higher concentration average was 2001 (0.345 mg/L) (Figure 28). The 2012 growing season Chl-a average concentration of 41.5 µg/L was a 16% increase on the historical average of 35.9 µg/L. The 2012 growing season average Secchi depth (0.7 meters) was 56% less than the historical average (1.6 meters) (Figure 27). Figure 28 presents the historical relationships between TP, Chl-a, and Secchi depth. In general, Como Lake has seen overall improvements in water quality since monitoring began in 1984, though each parameter tends to fluctuate annually. It is hypothesized that the lake is cyclic in water quality and biological response (Noonan, 1998), which is observable in the data as trends of increase and decrease occur generally every 5 years. The TP concentration has been increasing over the last four years. Over the last three years, the Chl-a concentration has remained fixed, while the Secchi depth has been decreasing. As in the 2012 data, the Secchi depth is strongly inversely proportional to TP concentration. In 2006, improvements in water quality parameters were observed in Como Lake which continued through 2007, 2008, and 2009 (Figure 28). From 2007, this reduction in nutrient loading is partially attributed to the Arlington-Pascal Stormwater Improvement Project constructed upstream of Como Lake. More information about the performance of these BMPs may be found in the CRWD BMP Performance and Cost-Benefit Analysis (CRWD, 2012).

4c.3 Crosby Lake Results Crosby Lake was sampled eight times in 2012 from 5/14/2012 to 9/25/2012 (Figure 21). TP concentrations peaked on 5/31/2012, and generally decreased through the rest of the 2012 growing season. Chl-a concentrations generally increased until early September. Secchi depths were high in the beginning (May 2012) and end (September 2012) of the monitoring season. Fluctuations in Secchi depth did not corresponded highly with TP concentrations, but to some degree, with Chl-a concentrations. This suggests that other factors besides phosphorus were contributing to algal growth and water clarity in Crosby Lake in 2012. The 2012 growing season average values at Crosby Lake for TP, Chl-a, and Secchi depth were 0.126 mg/L, 6.9 µg/L, and 2.0 meters, respectively (Table 15 and Figures 25, 26, and 27). Thus, Crosby Lake met the shallow lake standards for Chl-a and Secchi depth (Table 14). However, Crosby Lake did not meet the shallow lake standard for TP (0.060 mg/L). Crosby Lake has been monitored since 2005, so historical averages represent seven years of data (20052011). The 2012 TP growing season average of 0.126 mg/L was 110% higher than the historical average of 0.060 mg/L (Table 15, Figure 25). This was the highest concentration of TP since monitoring began in 2005. The Chl-a concentration of 6.9 µg/L was 51% lower than the historical average of 14.2 µg/L (Table 15, Figure 26). The Secchi depth was equivalent to the historical value of 2.0 meters (Table 15, Figure 27). Figure 29 shows that since monitoring of Crosby Lake began in 2005, a decrease in annual average TP concentrations was observed until concentrations increased dramatically in 2010. The TP concentration also increased in 2011 and 2012. While the Chl-a concentrations were analogous to the increases in TP Capitol Region Watershed District 2012 Monitoring Report 53


during 2010 and 2011, there was a sharp decrease in 2012. The Chl-a concentration was similar to the values reported in 2005-2009, despite a record TP value. With the low Chl-a value, the Secchi depth increased. Since 2005, the overall water quality of Crosby Lake has been in decline, but only 2010, 2011, and 2012 were the MPCA eutrophication standards not met (Chl-a in 2011, TP in 2010, 2011, and 2012). Crosby lake is located on the Mississippi River floodplain which experienced substantial flooding during these years, which was a contributing factor to overall water quality.

4c.4 Little Crosby Lake Results Little Crosby Lake was monitored for the first time in 2011 (Figure 30). Over the course of 2012, TP and Chl-a concentrations peaked in mid-July (Figure 22). Secchi depths were the lowest during this part of the year. Secchi depth did not appear to be highly correlated with either TP or Chl-a in 2012. The average TP concentration of 0.065 mg/L did not meet the state standard of 0.060 mg/L (Table 15, Figures 25). The average Chl-a concentration for the 2012 growing season (5.1 µg/L) met the shallow lake standard of 20.0 µg/L (Table 15, Figures 26). The average Secchi depth of 3.1 meters also met the standard of 1.0 meters (Table 15, Figures 27). In comparison to 2011 data (the only other data on record), Little Crosby Lake had lower TP and Chl-a concentrations, and a higher Secchi depth average.

4c.5 Loeb Lake Results Loeb Lake was sampled eight times from 5/2/2012 to 9/12/2012 (Figure 23). TP values were highest in the beginning and end of the monitoring period, but also experienced a sizable peak in July, the middle of the monitoring season (Figure 23). Chl-a values also were high at the beginning and end of the monitoring period, but were highest in July. Secchi depths were low at the beginning and middle of the monitoring season. Secchi depth was inversely correlated with Chl-a concentrations. Loeb Lake has been monitored annually since 2003 (except in 2004), so historical averages represent eight years of data (2003, 2005-2011) (Figure 31). In 2012, Loeb Lake met the state shallow lake standards for TP, Chl-a, and Secchi depth (Table 15, Figures 25-27). The 2012 growing season averages for TP, Chl-a, and Secchi depth were nearly the same as the historical averages. The growing season TP average (0.027 mg/L) was 12.5% higher than the historical average (0.024 mg/L). The 2012 growing season Chl-a average (4.2 µg/L) was 6.7% less than the historical average (4.5 µg/L). The growing season average Secchi depth (3.1 meters) was 6.1% less than the historical average (3.3 meters)(Table 15). Based on the historical data since 2005, water quality has been fairly steady in Loeb Lake. Growing season averages for TP have been slightly increasing since 2009 (Figure 31), which is likely due to wetter years in 2010, 2011, and 2012 (Table 5). Growing season Chl-a averages have had little annual deviation. Secchi depths have varied to some extent with no discernible trend.

4c.6 Lake McCarrons Results Lake McCarrons was sampled seven times from 5/2/2012 to 9/12/2012 (Figure 24). The 2012 TP concentrations in Lake McCarrons fluctuated throughout the growing season, but generally decreased from May to September. The Chl-a concentration was uncharacteristically high on 5/2/2012 (8.6 µg/L Capitol Region Watershed District 2012 Monitoring Report 54


compared to an average of 2.9 for the other sample dates). Chl-a, however, generally decreased throughout the 2012 growing season and overall was much lower than the historical average (Figure 26). Secchi depths were highest at the beginning and end of the monitoring period, with the lowest readings occurring in June and July of the 2012 growing season. Lake McCarrons has been monitored annually since 1988, so historical averages represent twenty-four years of data (1988-2011) (Figure 32). In 2012, Lake McCarrons met state deep lake standards for TP, Chl-a, and Secchi depth (Table 15, Figures 25- 27). The average growing season TP concentration for the year (0.018mg/L) was 55% less than the historical average (0.034 mg/L) (Figure 25). The growing season Chl-a concentration (3.7 Âľg/L) was 69% less than the historical average (10.2 Âľg/L) (Figure 26). The average Secchi depth for the year (3.2 meters) was 14% greater than the historical average (2.8 meters) (Figure 27). Lake McCarrons has experienced a significant improvement in water quality since receiving an alum treatment in 2004, which is noticeable in the historic water quality data (Figure 32). TP and Chl-a concentrations, and Secchi depths from 2005 to the present are vastly improved compared to those in 2004 and prior. From 2005 to the present, TP values have been higher in wetter years (2005, 2010, 2011, and 2012) (Table 5). Chl-a concentrations have remained consistent, except for 2011, when higher concentrations were present. Secchi depths were very high in 2008, and have been lower in 2011 and 2012.

Figure 20. 2012 Como Lake TP, Chl-a, and Secchi Depths. Capitol Region Watershed District 2012 Monitoring Report 55


Figure 21. 2012 Crosby Lake TP, Chl-a, and Secchi Depths.

Figure 22. 2012 Little Crosby Lake TP, Chl-a, and Secchi Depths. Capitol Region Watershed District 2012 Monitoring Report 56


Figure 23. 2012 Loeb Lake TP, Chl-a, and Secchi Depths.

Figure 24. 2012 Lake McCarrons TP, Chl-a, and Secchi Depths. Capitol Region Watershed District 2012 Monitoring Report 57


Table 15. 2012 and Historical Water Quality Growing Season Averages. 2012 Averages Historical Averages Lake Standards Lake TP Chl-a Secchi TP Chl-a Secchi TP Chl-a Secchi (mg/L) (µg/L) (m) (mg/L) (µg/L) (m) (mg/L) (µg/L) (m) Como 0.168 35.9 1.6 0.060 20.0 1.0 0.338 41.5 0.7 Crosby 14.2 2.0 0.060 20.0 1.0 0.126 6.9 2.0 0.060 Little Crosby 0.065 NA NA 0.060 20.0 1.0 5.1 3.1 NA Loeb 4.2 0.024 4.5 3.3 0.060 20.0 1.0 0.027 3.1 McCarrons 0.034 10.2 2.8 0.040 14.0 1.4 0.018 3.7 3.2 Values exceed the state standard NA:

Not applicable. Little Crosby Lake was not monitored until 2011.

Figure 25. 2012 and Historical Growing Season TP Averages.

Capitol Region Watershed District 2012 Monitoring Report 58


Figure 26. 2012 and Historical Growing Season Chl-a Averages.

Figure 27. 2012 and Historical Growing Season Secchi Depth Averages Capitol Region Watershed District 2012 Monitoring Report 59


Figure 28. Como Lake Growing Season TP, Chl-a, and Secchi Depth Averages.

Capitol Region Watershed District 2012 Monitoring Report 60


Figure 29. Crosby Lake Growing Season TP, Chl-a, and Secchi Depth Averages. Capitol Region Watershed District 2012 Monitoring Report 61


Figure 30. Little Crosby Lake Growing Season TP, Chl-a, and Secchi Depth Averages. Capitol Region Watershed District 2012 Monitoring Report 62


Figure 31. Loeb Lake Growing Season TP, Chl-a, and Secchi Depth Averages. Capitol Region Watershed District 2012 Monitoring Report 63


Figure 32. Lake McCarrons Growing Season TP, Chl-a, and Secchi Depth Averages.

Capitol Region Watershed District 2012 Monitoring Report 64


Chapter 5 5a

Conclusions and Recommendations

Conclusions

In 2012, stormwater discharging from CRWD was measured to be more polluted than the Mississippi River at Lambert’s Landing. Additionally, 2012 stormwater data was compared to a national stormwater quality database of urbanized areas which revealed that CRWD stormwater is typically more polluted with sediment, nutrients and bacteria than other urban watersheds across the nation. Concentrations for TP, TSS, metals, and bacteria in CRWD subwatersheds remained high in 2012, especially during stormflow periods. High stormwater pollutant levels contributed to the various water quality impairments found in CRWD lakes and the Mississippi River. The 2012 monitoring season was the third year that some CRWD monitoring sites collected data year-round from January through December. Therefore, total recorded discharge and pollutant loads are higher than recorded in the past (pre-2010). However, overall pollutant loads and concentrations were lower than seen historically when normalized for drainage area and the amount of runoff received. Among the monitoring sites, the Trout Brook subwatershed produced the highest total discharge and total loads for TSS and TP from CRWD in 2012 which closely corresponds to trends identified in previous monitoring years. East Kittsondale again showed improvement in normalized TSS and TP yields in 2012, but flow-weighted average concentrations remained very high for the subwatershed size. In comparison to the other sites, East Kittsondale continued its trend of generating the highest normalized sediment and phosphorus loads on a per acre and per inch of runoff basis. Monitoring of the Villa Park subwatershed has identified it as a prominent source of TP to Lake McCarrons. Villa Park showed a decrease in overall TP load in 2012 as well as in TSS load and average TSS concentrations. This is in stark contrast to the 2010 monitoring year, which showed a rather large increase in pollutant concentrations. In 2012, the average yearly concentrations of lead at five monitoring sites exceeded MPCA toxicity standard (East Kittsondale, Phalen Creek, Trout Brook – West Branch, Como 7, and Sarita). Average storm concentrations of copper at all sites except Villa Park exceeded the MPCA toxicity standard. Toxicity levels of zinc are also of concern during stormflow events at some sites, with East Kittsondale and Como 7 exceeding the MPCA toxicity standard. In general, bacteria levels during 2012 storm events were found to exceed MPCA water quality standards at most monitoring sites. Baseflow bacteria samples typically did not exceed the standard. CRWD staff witnessed potential illicit discharges which may not be related to bacteria at St. Anthony Park in 2012, and will continue to monitor the quality of water entering the Mississippi River at this site.

Capitol Region Watershed District 2012 Monitoring Report 65


Chloride levels were monitored year-round in 2012 at all CRWD sites. Large increases in chloride concentrations that exceeded the MPCA toxicity standard were generally observed in the winter months during snowmelt periods due to road salt application. CRWD stormwater ponds were able to provide adequate water storage while maintaining surface levels commensurate with previous monitoring years. Stormwater ponds experienced slight increases in water levels during large storm events; however, excess water generally drained within 72 hours. In 2012, the water quality of the five District lakes (Como, McCarrons, Loeb, Crosby, and Little Crosby) varied by water body and by time of year. Some of the lakes improved in water quality, while some lakes degraded compared to historical averages. Based on the MPCA eutrophication numeric water quality standards, Loeb Lake and Lake McCarrons met the MPCA standards for all parameters during the 2012 growing season. Both Crosby Lake and Little Crosby Lake met the MPCA shallow lake standards for Chl-a concentration and Secchi depth, while they both failed for TP concentration. Como Lake did not meet any of the MPCA shallow lake standards for Secchi depth, TP, and Chl-a concentrations during 2012 growing season.

5b

Recommendations

It is the goal of CRWD to continually improve the monitoring program with new ideas in order to advance the program in quality, efficiency, and usefulness. The monitoring program aims to collect and analyze high quality data from multiple locations to better understand the water quality in individual subwatersheds as well as the watershed as a whole. Data collection and analysis through the monitoring program helps to further CRWD’s mission “to protect, manage and improve the water resources of the Capitol Region Watershed District.” In 2012, CRWD achieved many of the goals stated in the 2011 Monitoring Report, including: • Continued monitoring of a potential illicit discharge from the St. Anthony Park subwatershed outlet; • The development of additional analysis for monitoring data using statistical methods and other techniques in collaboration with the University of Minnesota; • Continued comprehensive monitoring to determine areas of most concern within the watershed, including: o Year-round monitoring of five full water quality sites: East Kittsondale, Phalen Creek, Trout Brook – West Branch, Trout Brook – East Branch, and Trout Brook Outlet; o Preliminary sampling of previously unmonitored subwatersheds (data not yet reported). It should be noted that CRWD switched laboratory service providers in 2012 with the goal of improving sample analysis and results; however, this goal has not been completed to date and remains a high priority.

Capitol Region Watershed District 2012 Monitoring Report 66


For 2013, CRWD has several goals and recommendations to continue improving the monitoring program and the water quantity and quality dataset. Recommendations for 2013 fall under two categories: (1) Collaboration and Partnerships, and (2) Monitoring Program Evaluation.

1. Collaboration and Partnerships: It is the goal of CRWD to initiate collaborative efforts in stormwater monitoring with Mississippi Watershed Management Organization (MWMO) in 2013 with the intent of sharing ideas and data to improve the overall quality and usefulness of monitoring data collected by both organizations. CRWD and MWMO have very similar watersheds in terms of land use (densely urban and highly impervious) and precipitation amounts in addition to sharing a watershed boundary, so several collaborative opportunities exist between organizations. Collaboration will focus on: (1) data collection and field methods, (2) lab sample analysis methods, and (3) data analysis and reporting. CRWD will also continue fostering partnerships with various research groups from the University of Minnesota in 2013 with the goal of broadening our understanding of hydrology and pollutant loading in complex urban environments.

2. Monitoring Program Evaluation: In 2013, CRWD intends to critically evaluate its stormwater monitoring program. Since 2005, the program has significantly developed and changed over time to accommodate new goals, methods, and monitoring locations. Also, it was identified as a priority in the CRWD 2010 Watershed Management Plan to periodically evaluate the monitoring program within a 10-year period. The following is stated regarding the 10-year District-Wide Monitoring Plan (CRWD, 2010): A. 10-Year District-Wide Monitoring Plan Develop a 10-year District-wide monitoring plan that establishes the monitoring program framework. The monitoring plan will define the questions that monitoring will address, identify measureable objectives, and include specifics on monitoring sites, parameters, methodologies, timelines and direct the District to other monitoring needs and research. The plan will document the field and lab procedures used in monitoring and serve as a Quality Assurance Project Plan (QAPP). Water quality monitoring needs and goals identified in other subwatershed or lake management plans (e.g., the Loeb Lake/Willow Reserve Plan) will be incorporated into the overall monitoring plan. The monitoring plan will also include periodic program evaluation. Other water quality and water quantity monitoring data will be incorporated in the the plan. (e.g. Water treatment plants, MNDNR fish and macrophyte surveys, and beach monitoring) Finally, the plan will consider a more rigorouse anlaysis of the District’s monitoring data twice during the 10-year term of the Watershed Management Plan. This more detailed analysis will include statistical analysis to further document spatial, temporal, and climatic correlations between pollutant levels and other factors. (p. 53)

The purpose of critically evaluating the monitoring program in 2013 is to: evaluate monitoring goals; ensure monitoring methods, sites, and activities are effectively contributing to meeting the Capitol Region Watershed District 2012 Monitoring Report 67


goals of the monitoring program; and improve overall efficiency of monitoring activities and data quality. Specific objectives for the 2013 monitoring program evaluation include: •

Methods in Data Analysis: o Incorporation of additional statistical analysis methods of monitoring data, completed in 2013 by Dr. Ben Janke, University of Minnesota (e.g. seasonality, land use, cumulative frequency distributions) o Incorporation of additional statistical analysis of lakes water quality data and longterm lake trends, completed in 2013 by Wenck Associates o Evaluating methods for determining event mean concentrations and pollutant loading calculations

Monitoring Equipment and Technology Improvements: o Update CRWD inventory of current monitoring equipment o Retire and replace monitoring equipment based on need, function, and technological advancements o Improve computer software for more efficient data storage and analysis o Investigate feasibility of real-time remote data access for monitoring stations

Monitoring Site Locations: o Investigate alternative monitoring locations in unmonitored subwatersheds o Evaluate the eight-year record of water quality data at baseline monitoring sites to determine future frequency of monitoring activities at all locations o Complete additional biological data assessment and analysis for CRWD lakes to determine causes of water quality changes and trends

Evaluation of Laboratory Services: o CRWD switched laboratory services in 2012 from MCES to Pace Analytical o CRWD and Barr Engineering rigorously evaluated the 2012 data from Pace Analytical for QA/QC purposes and to determine if the data was comparable to MCES data from previous years o Barr Engineering determined the 2012 data from Pace Analytical to be comparable to previous years and provided recommendations for future laboratory services, laboratory analysis methods, and sampling procedures o In 2013, CRWD will evaluate and implement the recommendations developed by Barr Engineering to ensure CRWD monitoring data results are of the highest quality

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Chapter 6

References

Barr Engineering Company (Barr), 2013. 2012 Water Quality Data Review. Minneapolis, MN. Capitol Region Watershed District (CRWD), 2012. Stormwater BMP Performance Assessment and Cost-Benefit Analysis. Saint Paul, MN. Capitol Region Watershed District (CRWD), 2010. CRWD 2010 Watershed Management Plan. Saint Paul, MN. Capitol Region Watershed District (CRWD), 2002. Como Lake Strategic Management Plan. Saint Paul, MN. Capitol Region Watershed District (CRWD), 2000. Watershed Management Plan 2000. Roseville, MN. Maestre, A. and Pitt, R., 2005. The National Stormwater Quality Database, Version 1.1, A compilation and Analysis of NPDES Stormwater Monitoring Information. Center for Watershed Protection: Ellicott City, MD. Prepared for US EPA, Office of Water, Washington, D.C. City of St. Paul Surveyor’s Office, 2011. Survey records. Accessed on-line from http://survey.ci.stpaul.mn.us/survey_records1.html. Saint Paul, MN. ESRI, 2011. ArcGIS 9.3 Redlands, CA, USA. Kloiber, S.M., 2006. Estimating nonpoint source pollution for the Twin Cities Metropolitan area using landscape variables. Water, Air, and Soil Pollution. 172: 313-335. Massa, S., Brocchi, G.F., Peri, G. Altieri, C. and Mammina, C., 2001. Evaluation of recovery methods to detect faecal streptococci in polluted waters. Letters in Applied Microbiology. 32: 298-302. McCollor, S. and Heiskary, S., 1993. Selected water quality characteristics of minimally impacted streams from Minnesota’s seven ecoregions. Minnesota Pollution Control Agency, Saint Paul, MN. Metropolitan Council Environmental Services (MCES), 2012. Environmental Information Management System. Minnesota Pollution Control Agency (MPCA), 2012. Final TMDL list of impaired waters. Accessed on-line from http://www.pca.state.mn.us/index.php/view-document.html?gid=8281. Saint Paul, MN.

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Minnesota Pollution Control Agency (MPCA), 2010. Draft TMDL list of impaired waters. Accessed on-line from http://www.pca.state.mn.us/index.php/view-document.html?gid=8260. Saint Paul, MN. Minnesota Pollution Control Agency (MPCA), 2008. Archived Water Quality Standards Rule Revisions from http://www.pca.state.mn.us/index.php/water/water-permits-and-rules/waterrulemaking/archived-water-quality-standards-rule-revisions.html National Atmospheric and Oceanic Administration (NOAA), 2013. National Weather Service Climate data. Accessed on-line from http://www.weather.gov/climate/index.php?wfo=mpx United States Environmental Protection Agency, 2013. Current national recommended water quality criteria. Accessed on-line from http://www.epa.gov/waterscience/criteria/wqcriteria.html

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Appendix A: Detailed Subwatershed Data

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Appendix A.1

Como Lake Subwatershed

The Como Lake subwatershed is located directly east of the St. Anthony Park subwatershed, and includes the cities of St. Paul, Roseville, and Falcon Heights. Como 7 is one of eight minor subwatersheds within the Como Lake subwatershed, and is located west of Como Lake. North of Como 7 is Como 8 subwatershed, which drains to Gottfried’s Pit, a stormwater detention pond. When the water level in Gottfried’s Pit reaches a specific level, a lift station pumps the water via storm sewer to the Como Park Regional Pond before being discharged to Como Lake. CRWD monitors the Como 7 subwatershed to determine the aggregated or combined improvements to water quality based on the BMPs constructed as part of the Arlington-Pascal Stormwater Improvement Project. Started in 2005, the project included four stormwater BMP types: 1) eight infiltration trenches, 2) eight raingardens, 3) an underground infiltration and storage facility (Arlington-Hamline Underground Storage Facility) and 4) a stormwater pond at the Como Golf Course. These BMPs treat and infiltrate stormwater runoff, minimize localized flooding and reduce stormwater volumes in the storm sewer system. Three of the four BMPs, the Arlington-Hamline Underground Stormwater Storage Facility, eight in-street infiltration trenches and eight neighborhood raingardens, became operational in 2006 and 2007. The last BMP of the project, a storage and retention pond on the Como Park Golf Course (Como Park Regional Pond) became operational in October 2007.

Como 7 station

Como Golf Course Pond near Outlet

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Figure 33. Sampling Sites in the Como Lake Subwatershed.

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Table 16. 2005-2012 Como 7 Subwatershed Monitoring Results.

Subwatershed Area (ac) Total Rainfall (inches) Number of Monitoring Days Number of Storm Sampling Events Number of Storm Intervals Illicit Discharge Sampling Events Number of Illicit Discharge Intervals Total Discharge (cf) Storm Flow Subtotal (cf) Illicit Discharge Flow Subtotal (cf) Average TSS Concentration (mg/L) Total FWA TSS Concentration (mg/L) Storm FWA TSS Concentration (mg/L) Illicit Discharge FWA TSS Concentration (mg/L) Total TSS Loading (lbs) Storm TSS Loading (lbs) Illicit Discharge TSS Loading (lbs) Total TSS Yield (lb/ac) Normalized Total TSS Yield (lb/ac/in runoff) Average TP Concentration (mg/L) Total FWA TP Concentration (mg/L) Storm FWA TP Concentration (mg/L) Illicit Discharge FWA TP Concentration (mg/L) Total TP Loading (lbs) Storm TP Loading (lbs) Illicit Discharge TP Loading (lbs) Total TP Yield (lb/ac) Normalized Total TP Yield (lb/ac/in runoff) Note: Como 7 was not monitored in 2006. NA: Not available

2005 793 28.96 195 15 22 3 36 6,830,745 2,855,384 NA 219 134 29 134 57,123 49,982 7,142 72 30 0.297 0.290 0.310 0.270 123 56 67 0.150 0.065

2007 793 24.16 222 22 40 3 41 6,999,688 2,541,171 NA 154 93 162 54 40,727 25,697 15,030 51 21 0.330 0.240 0.300 0.210 104 47 57 0.130 0.054

2008 793 17.40 204 15 34 4 1 5,228,923 4,961,542 267,381 233 65 66 46 21,247 20,479 768 27 15 0.426 0.283 0.266 0.595 92 82 10 0.116 0.064

2009 2010 2011 2012 793 793 793 793 18.82 30.92 28.90 26.02 217 206 205 222 33 23 6 38 50 55 37 55 12 3 0 6 150 92 43 140 8,050,350 15,626,233 14,918,644 11,682,085 7,767,386 15,242,041 14,746,403 11,524,712 282,963 384,191 172,241 157,373 133 118 165 77 46 35 56 34 47 33 56 34 21 88 2 18 23,198 33,902 51,943 24,898 22,833 31,780 51,921 24,719 364 2,122 21 179 29 43 66 31 10 8 13 8 0.363 0.277 0.303 0.399 0.206 0.209 0.218 0.287 0.205 0.210 0.220 0.284 0.225 0.188 0.053 0.525 103 204 203 209 99 200 203 204 4 5 0.600 5 0.130 0.257 0.256 0.264 0.046 0.047 0.049 0.065

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Capitol Region Watershed District 2012 Monitoring Report 76


Table 17. 2012 Como 7 Subwatershed Laboratory Data. Como 7 Sample Type Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge

Sampling End Date/Time 07/02/2012 14:28 07/17/2012 11:06 07/31/2012 08:17 07/31/2012 23:26 08/14/2012 12:41 08/28/2012 14:35 09/26/2012 12:10 ID Average ID Maximum ID Minimum ID Median

Ortho-P mg/L 0.030 0.040 0.110 0.150 0.083 0.150 0.030 0.075

Cl mg/L 41.6 34.1 36.0 39.4 35.6 37.3 41.6 34.1 36.0

Cd mg/L 0.000120 0.000096 0.000080 0.000080 0.000080 0.000080 0.000089 0.000120 0.000080 0.000080

Cr mg/L 0.00130 0.00110 0.00130 0.00079 0.00067 0.00089 0.00101 0.00130 0.00067 0.00100

Cu mg/L 0.0065 0.0030 0.0060 0.0035 0.0039 0.0023 0.0042 0.0065 0.0023 0.0037

Pb mg/L 0.00110 0.00067 0.00150 0.00061 0.00110 0.00036 0.00089 0.00150 0.00036 0.00089

K mg/L 5.25 2.81 6.70 3.94 3.92 3.33 4.33 6.70 2.81 3.93

Ni mg/L 0.00160 0.00086 0.00160 0.00085 0.00067 0.00097 0.00109 0.00160 0.00067 0.00092

Zn mg/L 0.0288 0.0158 0.0459 0.0149 0.0272 0.0089 0.0236 0.0459 0.0089 0.0215

NH3 mg/L 0.380 0.440 1.100 0.690 0.380 0.620 0.602 1.100 0.380 0.530

TKN mg/L

Sampling start Sampling End Date/Time Date/Time 01/26/2012 14:00 01/26/2012 14:00 03/06/2012 13:25 03/06/2012 13:25 03/22/2012 10:15 03/22/2012 10:15 04/15/2012 02:08 04/15/2012 03:39 04/17/2012 22:54 04/18/2012 00:27 04/21/2012 21:37 04/22/2012 01:01 05/01/2012 21:52 05/02/2012 00:38 05/03/2012 10:50 05/03/2012 10:50 05/03/2012 10:20 05/03/2012 10:53 05/04/2012 19:02 05/04/2012 20:09 05/05/2012 14:44 05/05/2012 15:36 05/19/2012 18:53 05/19/2012 19:51 05/23/2012 21:03 05/24/2012 00:50 05/24/2012 07:55 05/24/2012 07:55 05/26/2012 10:31 05/26/2012 12:11 06/10/2012 21:22 06/10/2012 23:38 06/14/2012 10:03 06/14/2012 10:03 06/14/2012 10:00 06/14/2012 10:59 06/16/2012 09:56 06/16/2012 11:22 06/17/2012 23:33 06/17/2012 23:55 07/06/2012 18:59 07/06/2012 23:39 07/13/2012 04:17 07/13/2012 07:02 07/18/2012 02:21 07/18/2012 03:19 07/18/2012 10:31 07/18/2012 11:04 07/24/2012 08:41 07/24/2012 08:41 07/24/2012 05:51 07/24/2012 11:21 07/29/2012 05:51 07/29/2012 08:22 08/03/2012 23:40 08/04/2012 01:48 09/17/2012 04:05 09/17/2012 05:22 10/24/2012 17:05 10/24/2012 20:54 10/25/2012 05:04 10/25/2012 05:37 10/25/2012 08:53 10/25/2012 08:53 Snowmelt Average Como 7 Storm Average Como 7 Annual Average Annual Maximum Annual Minimum Annual Median

Ortho-P mg/L 0.160 0.310 0.130 0.010 0.010 0.036 0.010 0.010 0.010 0.010 0.010 0.021 0.010 0.035 0.010 0.010 0.070 0.980 0.390 0.235 0.104 0.117 0.980 0.010 0.010

Cl mg/L 6,490.0 100.0 45.4 7.6 7.3 4.7 4.6 6.7 8.1 4.4 10.7 4.3 2.3 6.7 4.3 2.1 2.0 2.1 5.0 3.5 2.0 2.0 2.0 2.0 13.5 25.5 9.0 3,295.0 7.5 251.0 6,490.0 2.0 4.7

Cd mg/L 0.001100 0.000096 0.000310 0.000150 0.000100 0.000080 0.000140 0.000480 0.000098 0.000093 0.000440 0.000190 0.000110 0.000250 0.000290 0.000240 0.000180 0.000240 0.000230 0.000220 0.000120 0.000120 0.000080 0.000100 0.000350 0.000260 0.000210 0.000598 0.000203 0.000232 0.001100 0.000080 0.000190

Cr mg/L 0.01500 0.00460 0.01030 0.00560 0.00270 0.00120 0.00270 0.01810 0.00250 0.00260 0.00670 0.00360 0.00220 0.00430 0.00570 0.00410 0.00570 0.00500 0.00370 0.00430 0.00320 0.00210 0.00120 0.00180 0.00400 0.00300 0.01750 0.00980 0.00495 0.00531 0.01810 0.00120 0.00400

Cu mg/L 0.0350 0.0107 0.0263 0.0135 0.0074 0.0049 0.0066 0.0325 0.0085 0.0057 0.0281 0.0136 0.0050 0.0156 0.0197 0.0112 0.0091 0.0192 0.0154 0.0146 0.0060 0.0058 0.0034 0.0071 0.0192 0.0174 0.0160 0.0229 0.0133 0.0140 0.0350 0.0034 0.0135

Pb mg/L 0.01820 0.00700 0.01580 0.01070 0.00850 0.00280 0.00580 0.05480 0.00850 0.00510 0.02570 0.01220 0.00540 0.01340 0.01820 0.00840 0.01810 0.01540 0.00900 0.01230 0.00770 0.00250 0.00170 0.00390 0.01770 0.00600 0.07020 0.01260 0.01439 0.01426 0.07020 0.00170 0.00900

K mg/L

Ni mg/L 0.01010 0.00330 0.00860 0.00420 0.00220 0.00100 0.00170 0.01080 0.00150 0.00100 0.00600 0.00390 0.00160 0.00270 0.00440 0.00320 0.02320 0.00440 0.00320 0.00390 0.00170 0.00150 0.00081 0.00150 0.00410 0.00410 0.00380 0.00670 0.00420 0.00439 0.02320 0.00081 0.00330

Zn mg/L 0.2280 0.0582 0.1680 0.0947 0.0587 0.0456 0.0528 0.2020 0.0689 0.0559 0.1680 0.0910 0.0733 0.0909 0.1080 0.1970 0.0779 0.1100 0.0886 0.0961 0.0447 0.0345 0.0268 0.0466 0.1220 0.0959 0.1390 0.1431 0.0943 0.0979 0.2280 0.0268 0.0909

NH3 mg/L 0.076 0.850 0.780 0.200 0.830 0.310 0.490 0.270 0.260 0.330 0.230 0.360 0.400 0.150 0.190 0.250 0.530 0.460 1.100 0.590 0.210 0.069 0.040 0.370 0.080 0.250 0.160 0.463 0.356 0.364 1.100 0.040 0.270

TKN mg/L

Golf Course Pond Outlet Sample Sampling start Sampling End Type Date/Time Date/Time Storm Composite 05/02/2012 00:19 05/02/2012 12:46 Storm Composite 05/02/2012 13:33 05/03/2012 12:49 Storm Composite 05/04/2012 10:33 05/05/2012 08:22 Storm Composite 05/19/2012 20:43 05/21/2012 10:47 Storm Composite 05/24/2012 00:57 05/24/2012 07:04 Storm Composite 06/10/2012 23:53 06/11/2012 11:03 Storm Composite 06/14/2012 11:16 06/15/2012 08:00 Storm Composite 07/06/2012 22:01 07/08/2012 08:31 Storm Composite 07/18/2012 10:54 07/19/2012 08:49 Storm Composite 07/19/2012 10:19 07/20/2012 08:08 Storm Composite 07/24/2012 11:42 07/25/2012 04:51 Storm Composite 07/30/2012 09:44 07/31/2012 04:19 Storm Composite 08/04/2012 01:13 08/05/2012 12:12 Storm Average Golf Course Pond Outlet Annual Average Como 7 Subwatershed Annual Maximum Como 7 Subwatershed Annual Minimum Como 7 Subwatershed Annual Median Como 7 Subwatershed

Ortho-P mg/L 0.084 0.140 0.110 0.022 0.010 0.036 0.021 0.010 0.010 0.021 0.010 0.043 0.089 0.980 0.010 0.022

Cl mg/L 57.4 44.8 97.6 59.3 38.1 24.0 25.8 14.8 9.6 8.2 4.6 4.2 4.5 30.2 163.5 6,490.0 2.0 8.1

Cd mg/L 0.000080 0.000100 0.000080 0.000110 0.000080 0.000290 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000150 0.000105 0.000178 0.001100 0.000080 0.000110

Cr mg/L 0.00120 0.00160 0.00260 0.00280 0.00160 0.00170 0.00097 0.00140 0.00120 0.00130 0.00120 0.00100 0.00120 0.00152 0.00368 0.01810 0.00067 0.00255

Cu mg/L 0.0040 0.0044 0.0037 0.0079 0.0049 0.0061 0.0033 0.0058 0.0047 0.0043 0.0046 0.0034 0.0045 0.0047 0.0101 0.0350 0.0023 0.0063

Pb mg/L 0.00170 0.00610 0.00160 0.00530 0.00470 0.00320 0.00110 0.00260 0.00180 0.00140 0.00170 0.00120 0.00270 0.00270 0.00925 0.07020 0.00036 0.00535

K mg/L

Ni mg/L 0.00120 0.00110 0.00120 0.00210 0.00140 0.00096 0.00100 0.00180 0.00150 0.00160 0.00150 0.00100 0.00130 0.00136 0.00310 0.02320 0.00067 0.00160

Zn mg/L 0.0273 0.0370 0.0338 0.0390 0.0395 0.0318 0.0208 0.0345 0.0342 0.0312 0.0237 0.0164 0.0329 0.0309 0.0693 0.2280 0.0089 0.0463

NH3 mg/L 0.680 0.400 0.650 0.820 0.730 0.130 0.460 0.420 0.370 0.360 0.063 0.140 0.240 0.420 0.411 1.100 0.040 0.370

TKN mg/L

Como 7 Sample Type Snowmelt Grab Snowmelt Grab Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite

Sampling start Date/Time 07/02/2012 08:44 07/17/2012 08:32 07/31/2012 08:17 07/31/2012 11:37 08/14/2012 09:29 08/28/2012 07:37 09/26/2012 09:51

2.31 1.10 1.34 1.29 1.51 1.51 2.31 1.10 1.32

2.11 2.11 3.10 6.70 1.10 2.81

NO3 mg/L 0.29 0.25 0.40 0.24 0.27 0.29 0.40 0.24 0.27

NO2 NO2 +NO3 mg/L mg/L 0.10 0.30 0.34 0.59 0.27 0.66 0.31 0.56 0.35 0.62 0.27 0.55 0.35 0.66 0.10 0.30 0.31 0.59

TDS mg/L

1.8 1.2 1.6 1.3 1.5 1.8 1.2 1.5

Total P mg/L 0.33 0.20 1.50 0.58 0.34 0.22 0.53 1.50 0.20 0.34

TVS mg/L

160 164 178 168 168 178 160 166

TSS mg/L 19.7 15.5 38.2 23.2 8.9 5.0 18.4 38.2 5.0 17.6

6.1 3.4 3.6 1.3 2.5 1.0 1.6 3.0 2.8 4.6 5.4 2.7 1.0 2.9 1.9 1.0 1.0 1.1 2.2 1.2 1.0 1.0 1.0 1.0 4.3 1.0 4.8 2.1 2.3 6.1 1.0 1.8

Total P mg/L 0.69 0.66 0.42 0.22 0.32 0.17 0.20 0.85 0.38 0.24 0.47 0.37 0.19 0.36 0.42 0.33 0.24 0.36 0.55 0.62 0.16 0.10 0.64 0.19 0.82 1.30 0.86 0.68 0.43 0.45 1.30 0.10 0.37

NO3 mg/L 1.10 0.26 0.52 0.20 0.40 0.32 0.34 0.27 0.20 0.39 0.14 0.24 0.19 0.16 0.42 0.27 0.32 0.21 1.00 0.64 0.36 0.23 0.27 0.21 0.24 0.10 0.10 0.68 0.31 0.34 1.10 0.10 0.27

1.8 1.5 2.6 2.8 1.6 2.2 1.7 1.3 1.1 1.2 1.0 3.0 1.0 1.8 2.1 6.1 1.0 1.6

Total P mg/L 0.05 0.20 0.23 0.43 0.29 0.26 0.17 0.43 0.28 0.27 0.18 0.13 0.14 0.24 0.40 1.50 0.05 0.33

NO3 mg/L 0.25 0.24 0.21 0.16 0.20 0.14 0.16 0.10 0.11 0.74 0.10 0.10 0.10 0.20 0.29 1.10 0.10 0.24

NO2 NO2 +NO3 mg/L mg/L 0.23 1.30 0.10 0.30 0.10 0.56 0.10 0.20 0.10 0.42 0.10 0.33 0.10 0.36 0.10 0.28 0.10 0.20 0.10 0.41 0.10 0.14 0.10 0.27 0.10 0.20 0.10 0.17 0.10 0.46 0.10 0.30 0.10 0.33 0.10 0.24 0.10 1.10 0.10 0.66 0.10 0.38 0.10 0.25 0.10 0.29 0.10 0.24 0.10 0.24 0.10 0.10 0.10 0.10 0.17 0.80 0.10 0.33 0.10 0.36 0.23 1.30 0.10 0.10 0.10 0.29

TDS mg/L 10,400 244 186 46 62 60 50 40 54 36 86 44 88 40 30 20 38 44 86 41 32 20 44 272 98 5,322 66 486 10,400 20 46

TSS mg/L 237.0 65.8 148.0 130.0 117.0 17.9 74.5 369.0 77.6 41.5 374.0 120.0 44.3 125.0 239.0 60.8 139.0 115.0 101.0 125.0 39.3 19.4 18.9 30.7 143.0 52.4 120.0 151.4 113.7 116.5 374.0 17.9 115.0

TVS mg/L 390.0 59.0 108.0 37.0 48.0 28.0 47.0 10.0 108.0 65.7 81.2 111.0 17.0 115.0 19.6 80.9 37.9 72.6 23.1 29.7 10.4 4.2 224.5 52.7 68.3 390.0 4.2 47.5

VSS mg/L

NO2 NO2 +NO3 mg/L mg/L 0.10 0.27 0.10 0.27 0.10 0.23 0.10 0.20 0.10 0.23 0.10 0.17 0.10 0.17 0.10 0.10 0.10 0.13 0.10 0.78 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.22 0.12 0.34 0.35 1.30 0.10 0.10 0.10 0.27

TDS mg/L

TSS mg/L 13.3 15.2 7.4 43.6 21.7 65.6 10.4 18.6 21.0 23.8 21.0 11.5 14.1 22.1 77.0 374.0 5.0 42.6

TVS mg/L 26.0 10.0 100.0 84.4 67.0 79.0 14.8 54.4 55.4 105.0 39.5 18.5 54.5 63.9 390.0 4.2 54.9

VSS

142 24 206 146 108 30 87 84 80 67 58 40 60 87 332 10,400 20 61

Note: Nitrate (NO3 ), Nitrite (NO2 ), and CBOD values may contain estimated unflagged data -

VSS mg/L

82.9 60.5 71.7 82.9 60.5 71.7

Actual number less than value (<) Reporting limit halved Not collected

Capitol Region Watershed District 2012 Monitoring Report 77

CBOD mg/L

5 5 5 5 5

Hardness mg/L 88.6 75.3 92.2 94.1 89.2 99.0 89.7 99.0 75.3 90.7

Fl mg/L

32.3 8.8 8.8 16.6 32.3 8.8 8.8

SO4 mg/L 22.0 19.7 19.8 23.9 20.2 21.1 23.9 19.7 20.2

73 41 76 63 63 76 41 73

Hardness mg/L 281.0 34.2 53.7 33.2 22.4 14.1 21.7 101.0 22.0 20.2 66.6 55.4 20.3 36.0 51.1 42.8 22.3 70.9 39.4 37.4 18.5 18.7 15.1 23.1 53.0 81.4 45.0 157.6 39.4 48.2 281.0 14.1 36.0

CBOD mg/L 57.0 11.1 12.3 11.9 14.8 12.8 8.1 59.2 11.4 5.4 2.7 7.2 3.6 50.5 34.1 16.7 19.1 59.2 2.7 11.7

SO4 mg/L 46.2 2.5 16.3 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.8 2.5 2.5 2.5 4.1 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 24.4 3.1 4.7 46.2 2.5 2.5

Fl mg/L

Hardness mg/L 24.1 20.6 25.6 30.9 26.1 29.2 27.2 28.2 28.0 26.3 23.1 21.7 22.6 25.7 47.2 281.0 14.1 30.1

CBOD mg/L

SO4 mg/L

Fl mg/L

49 76 5 57

5.7 2.9 9.6 5.5 15.2 8.0 10.1 6.1 6.5 7.7 14.9 59.2 2.7 9.2

2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 5.9 46.2 2.5 2.5

Ca mg/L 1.2 1.0 0.9 0.9 1.0 1.0 1.0 1.2 0.9 1.0

Mg mg/L -

Ca mg/L 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

0.1 0.1 0.6 1.2 0.1 0.9

8.4 8.0 7.1 6.7 6.9 7.4 8.3 16.4 5.5 7.2

2.6 1.2 1.0 1.2 2.9 1.8 1.8 2.9 1.0 1.2

pH E. coli Std. Units mpn/100 mL 6.8 7.4 7.0 7,500 6.4 6.4 6.8 6.9 7,500 7.5 6.6 6.7 6.2 6.1 11,000 6.8 7,500 6.4 6.1 6.2 6.7 6.0 5.9 6.8 2,420 6.5 6.8 6.9 6.9 6.8 93,300 7.1 6.6 21,537 6.6 21,537 7.5 93,300 5.9 2,420 6.7 7,500

1.7 1.6 1.3 1.2 1.3 1.4 1.6 2.9 1.0 1.3

pH E. coli Std. Units mpn/100 mL 7.1 7.3 6.8 6.5 6.7 6.9 6.5 6.9 6.9 7.1 6.9 7.2 7.2 6.9 6.8 32,946 8.6 101,400 5.9 2,420 6.8 7,500

Mg mg/L

10.7 5.5 5.9 7.2 16.4 9.1 9.1 16.4 5.5 7.2

Ca mg/L

-

pH E. coli Std. Units mpn/100 mL 7.0 6.4 101,400 8.6 7.6 7.4 101,400 8.6 101,400 6.4 101,400 7.3 101,400

Mg mg/L


Capitol Region Watershed District 2012 Monitoring Report 78


Figure 34. 2012 Como 7 Level, Discharge and Rainfall. Capitol Region Watershed District 2012 Monitoring Report 79


Figure 35. 2012 Golf Course Pond Outlet Level, Discharge and Rainfall. Capitol Region Watershed District 2012 Monitoring Report 80


Table 18. 2012 Como 7 Subwatershed Loading. Como 7 Sample Type Storm Illicit Discharge Storm Storm Storm Storm Storm Composite Storm Storm Composite Storm Storm Composite Illicit Discharge Storm Illicit Discharge Illicit Discharge Storm Illicit Discharge Storm Illicit Discharge Illicit Discharge Storm Composite Storm Composite Illicit Discharge Storm Composite Storm Composite Storm Illicit Discharge Storm Illicit Discharge Illicit Discharge Illicit Discharge Storm

Sample Collection Time Start Start Date End Date Time

End Time

TP (mg/L)

TSS (mg/L)

0.43

113.7

0.53 0.43 0.43 0.43 0.43

18.4 113.7 113.7 113.7 113.7

4/15/2012

2:08

4/15/2012

3:39

0.22 0.43

130.0 113.7

4/17/2012

22:54

4/18/2012

0:27

0.32 0.43

117.0 113.7

4/21/2012

21:37

4/22/2012

1:01

0.17 0.53 0.43

17.9 18.4 113.7

0.53 0.53 0.43

18.4 18.4 113.7

0.53 0.43

18.4 113.7

0.53 0.53 0.20 0.85 0.53 0.38 0.24 0.43

18.4 18.4 74.5 369.0 18.4 77.6 41.5 113.7

0.53 0.43

18.4 113.7

0.53 0.53 0.53 0.43

18.4 18.4 18.4 113.7

5/1/2012 5/3/2012

21:52 10:20

5/2/2012 5/3/2012

0:38 10:53

5/4/2012 5/5/2012

19:02 14:44

5/4/2012 5/5/2012

20:09 15:36

Loading Interval Start 3/29/12 21:40 4/2/12 11:40 4/2/12 23:50 4/7/12 12:20 4/13/12 9:20 4/13/12 18:20 4/15/12 1:40 4/15/12 19:40 4/17/12 22:00 4/19/12 18:00 4/21/12 14:00 4/24/12 11:20 4/25/12 3:00 4/26/12 8:10 4/27/12 7:40 4/28/12 8:30 4/29/12 9:10 4/29/12 21:50 4/30/12 9:10 5/1/12 7:40 5/1/12 21:40 5/3/12 3:50 5/4/12 8:40 5/4/12 18:50 5/5/12 8:20 5/6/12 2:20 5/7/12 7:30 5/8/12 8:50 5/9/12 8:20 5/10/12 9:20 5/11/12 8:20 5/11/12 19:50

Capitol Region Watershed District 2012 Monitoring Report 81

Interval Volume (cf)

Interval TP (lb)

Interval TSS (lb)

3/30/12 2:10

3,853

4/2/12 15:10 4/3/12 3:10 4/7/12 18:10 4/13/12 14:30 4/14/12 2:00 4/15/12 7:30 4/16/12 14:30 4/18/12 11:30 4/19/12 19:10 4/22/12 7:10 4/24/12 16:10 4/25/12 16:30 4/26/12 10:20 4/27/12 10:50 4/28/12 18:00 4/29/12 14:20 4/30/12 2:50 4/30/12 12:50 5/1/12 12:40 5/2/12 16:30 5/3/12 18:10 5/4/12 12:10 5/5/12 2:50 5/6/12 2:10 5/7/12 0:10 5/7/12 11:20 5/8/12 19:00 5/9/12 12:30 5/10/12 13:20 5/11/12 10:10 5/11/12 23:30

252 8,227 4,105 326 401 31,706 21,935 12,007 63 10,994 496 7,614 93 269 6,224 485 2,077 104 571 38,564 62,876 656 9,780 24,397 58,651 864 4,662 215 575 164 2,286

0.10 0.01 0.22 0.11 0.01 0.01 0.44 0.59 0.24 0.002 0.12 0.02 0.20 0.003 0.01 0.17 0.02 0.06 0.003 0.02 0.48 3.34 0.02 0.23 0.37 1.57 0.03 0.13 0.01 0.02 0.01 0.06

27 0 58 29 2 3 257 156 88 0 12 1 54 0 0 44 1 15 0 1 179 1,448 1 47 63 416 1 33 0 1 0 16

End


Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Storm Composite Illicit Discharge Storm Composite Illicit Discharge Illicit Discharge Storm Composite Illicit Discharge Storm Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Storm Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Storm Composite Illicit Discharge Illicit Discharge Illicit Discharge Storm Composite Illicit Discharge Storm Composite Illicit Discharge Storm

5/19/2012

18:53

5/19/2012

19:51

5/23/2012

21:03

5/24/2012

0:50

5/26/2012

10:31

5/26/2012

12:11

6/10/2012

21:22

6/10/2012

23:38

6/14/2012

10:00

6/14/2012

10:59

6/16/2012

9:56

6/16/2012

11:22

0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.47 0.53 0.37 0.53 0.53 0.19 0.53 0.43

18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 374.0 18.4 120.0 18.4 18.4 44.3 18.4 113.7

0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.43

18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 113.7

0.53 0.53 0.53 0.53 0.36 0.53 0.53 0.53 0.42 0.53 0.33 0.53 0.43

18.4 18.4 18.4 18.4 125.0 18.4 18.4 18.4 239.0 18.4 60.8 18.4 113.7

5/12/12 8:00 5/13/12 8:00 5/14/12 8:10 5/15/12 7:20 5/16/12 8:40 5/17/12 7:20 5/18/12 11:10 5/19/12 8:10 5/19/12 18:40 5/22/12 7:30 5/23/12 20:50 5/25/12 8:50 5/25/12 12:40 5/26/12 8:50 5/27/12 8:10 5/27/12 15:40 5/29/12 7:50 5/30/12 8:40 5/31/12 7:20 6/1/12 8:40 6/2/12 7:30 6/3/12 9:10 6/4/12 7:50 6/5/12 8:10 6/6/12 19:00 6/7/12 7:40 6/8/12 6:40 6/9/12 7:40 6/10/12 7:20 6/10/12 21:00 6/11/12 8:40 6/12/12 7:10 6/13/12 7:30 6/14/12 7:00 6/15/12 7:30 6/16/12 7:30 6/17/12 6:20 6/17/12 11:50

Capitol Region Watershed District 2012 Monitoring Report 82

5/12/12 12:50 5/13/12 12:50 5/14/12 19:00 5/15/12 16:20 5/16/12 16:00 5/17/12 10:30 5/18/12 16:20 5/19/12 14:50 5/20/12 2:10 5/22/12 9:40 5/25/12 3:10 5/25/12 10:00 5/25/12 14:50 5/26/12 18:30 5/27/12 10:20 5/28/12 16:30 5/29/12 15:50 5/30/12 15:10 5/31/12 18:30 6/1/12 15:50 6/2/12 15:40 6/3/12 15:20 6/4/12 12:20 6/5/12 11:00 6/6/12 23:00 6/7/12 13:30 6/8/12 9:40 6/9/12 11:00 6/10/12 14:40 6/11/12 3:20 6/11/12 13:20 6/12/12 15:10 6/13/12 15:30 6/14/12 20:20 6/15/12 10:40 6/16/12 14:40 6/17/12 7:40 6/17/12 20:20

735 784 2,956 1,064 1,623 135 1,000 2,061 27,406 1,585 228,609 596 313 21,137 184 27,660 193 472 1,429 645 460 977 852 229 9,953 1,907 1,331 873 1,186 16,525 753 1,234 761 48,846 576 12,963 1,399 2,048

0.02 0.03 0.10 0.04 0.05 0.004 0.03 0.07 0.80 0.05 5.28 0.02 0.01 0.25 0.01 0.74 0.01 0.02 0.05 0.02 0.02 0.03 0.03 0.01 0.27 0.06 0.04 0.03 0.04 0.37 0.02 0.04 0.03 1.28 0.02 0.27 0.05 0.05

1 1 3 1 2 0 1 2 640 2 1,713 1 0 58 0 196 0 1 2 1 1 1 1 0 71 2 2 1 1 129 1 1 1 729 1 49 2 15


Storm Composite Storm Storm Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Composite Storm Illicit Discharge Illicit Discharge Storm Composite Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge

6/17/2012

7/6/2012

18:59

7/6/2012

23:39

Storm Composite Storm Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Composite

7/13/2012

4:17

7/13/2012

7:02

Storm Composite Storm Composite Illicit Discharge Illicit Discharge Storm Illicit Discharge Illicit Discharge Illicit Discharge Storm Composite Illicit Discharge

7/2/2012

7/17/2012 7/18/2012 7/18/2012

7/24/2012

23:33

8:44

8:32 2:21 10:31

5:51

6/17/2012

7/2/2012

7/17/2012 7/18/2012 7/18/2012

7/24/2012

23:55

14:28

11:06 3:19 11:04

11:21

0.24 0.43 0.43

139.0 113.7 113.7

0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.33 0.43

18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 19.7 113.7

0.53 0.53 0.36 0.53 0.53 0.53 0.53 0.53 0.53 0.55 0.43

18.4 18.4 115.0 18.4 18.4 18.4 18.4 18.4 18.4 101.0 113.7

0.53 0.53 0.53 0.20 0.62 0.16 0.53 0.53 0.43

18.4 18.4 18.4 15.5 125.0 39.3 18.4 18.4 113.7

0.53 0.53 0.53 0.10 0.53

18.4 18.4 18.4 19.4 18.4

6/17/12 23:10 6/19/12 4:00 6/20/12 7:20 6/24/12 6:50 6/25/12 7:40 6/26/12 8:00 6/27/12 7:50 6/28/12 7:30 6/29/12 6:40 6/30/12 8:40 7/1/12 7:30 7/2/12 7:40 7/3/12 3:30 7/5/12 8:10 7/6/12 7:20 7/6/12 18:40 7/7/12 6:40 7/8/12 8:20 7/9/12 7:40 7/10/12 7:50 7/11/12 7:40 7/12/12 7:10 7/13/12 4:00 7/13/12 14:40 7/14/12 8:20 7/15/12 7:30 7/16/12 8:20 7/17/12 8:00 7/18/12 2:00 7/18/12 7:30 7/19/12 6:50 7/20/12 3:20 7/21/12 6:30 7/22/12 6:50 7/22/12 12:20 7/23/12 8:50 7/24/12 4:00 7/25/12 9:10

Capitol Region Watershed District 2012 Monitoring Report 83

6/18/12 7:40 6/19/12 13:00 6/21/12 0:30 6/24/12 15:40 6/25/12 14:50 6/26/12 12:50 6/27/12 13:40 6/28/12 16:20 6/29/12 16:30 6/30/12 12:50 7/1/12 16:00 7/2/12 12:20 7/3/12 6:20 7/5/12 15:00 7/6/12 15:50 7/7/12 3:30 7/7/12 15:40 7/8/12 14:00 7/9/12 12:30 7/10/12 16:00 7/11/12 16:20 7/12/12 12:40 7/13/12 12:40 7/14/12 3:50 7/14/12 15:40 7/15/12 16:50 7/16/12 12:10 7/17/12 11:50 7/18/12 5:50 7/18/12 18:30 7/19/12 16:00 7/20/12 11:30 7/21/12 16:10 7/22/12 8:10 7/22/12 15:00 7/23/12 15:50 7/24/12 15:30 7/25/12 17:10

45,242 33,596 6,484 1,189 823 994 1,274 1,853 1,612 1,263 2,485 780 3,464 1,241 1,391 28,050 2,507 1,412 1,605 1,067 3,024 2,034 10,171 8,130 1,118 2,901 645 738 12,617 64,547 4,512 1,752 55,526 1,740 607 2,620 24,245 2,105

0.68 0.90 0.17 0.04 0.03 0.03 0.04 0.06 0.05 0.04 0.08 0.02 0.09 0.04 0.05 0.63 0.08 0.05 0.05 0.04 0.10 0.07 0.35 0.22 0.04 0.10 0.02 0.01 0.49 0.64 0.15 0.06 1.49 0.06 0.02 0.09 0.15 0.07

393 238 46 1 1 1 1 2 2 1 3 1 25 1 2 201 3 2 2 1 3 2 64 58 1 3 1 1 98 158 5 2 394 2 1 3 29 2


Illicit Discharge Illicit Discharge Illicit Discharge Storm Storm Composite Illicit Discharge Illicit Discharge Illicit Discharge Composite Illicit Discharge Illicit Discharge Illicit Discharge

7/29/2012

5:51

7/29/2012

8:22

7/31/2012

11:37

7/31/2012

23:26

Storm Composite Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Composite Storm Storm Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Storm Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Storm Illicit Discharge

8/3/2012

23:40

8/4/2012

1:48

8/14/2012

9:29

8/14/2012

12:41

0.53 0.53 0.53 0.43

18.4 18.4 18.4 113.7

0.64 0.53 0.53 1.50 0.53 0.53 0.53 0.19 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.58 0.43 0.43

18.9 18.4 18.4 38.2 18.4 18.4 18.4 30.7 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 23.2 113.7 113.7

0.53 0.53 0.53 0.53 0.43

18.4 18.4 18.4 18.4 113.7

0.53 0.53 0.53 0.53 0.53 0.43

18.4 18.4 18.4 18.4 18.4 113.7

0.53

18.4

7/26/12 6:20 7/27/12 6:40 7/28/12 8:30 7/28/12 22:40 7/29/12 4:50 7/30/12 7:50 7/30/12 14:30 7/31/12 9:10 8/1/12 8:20 8/2/12 6:50 8/3/12 6:20 8/3/12 23:20 8/4/12 8:20 8/5/12 7:10 8/5/12 11:00 8/6/12 8:40 8/7/12 7:40 8/8/12 8:30 8/9/12 7:30 8/10/12 7:30 8/11/12 8:20 8/12/12 8:10 8/13/12 7:30 8/14/12 8:40 8/15/12 8:10 8/15/12 22:10 8/16/12 8:50 8/16/12 14:10 8/17/12 9:00 8/18/12 7:10 8/19/12 0:00 8/19/12 8:10 8/20/12 8:50 8/21/12 8:50 8/23/12 8:50 8/24/12 2:20 8/25/12 6:40 8/26/12 7:10

Capitol Region Watershed District 2012 Monitoring Report 84

7/26/12 14:20 7/27/12 10:50 7/28/12 13:30 7/29/12 2:40 7/29/12 17:00 7/30/12 10:10 7/30/12 16:10 7/31/12 10:00 8/1/12 12:00 8/2/12 16:40 8/3/12 15:20 8/4/12 4:50 8/4/12 12:20 8/5/12 8:30 8/5/12 14:40 8/6/12 10:10 8/7/12 16:10 8/8/12 13:50 8/9/12 16:20 8/10/12 10:30 8/11/12 11:50 8/12/12 14:10 8/13/12 12:00 8/14/12 12:50 8/15/12 12:50 8/15/12 23:30 8/16/12 11:50 8/16/12 15:00 8/17/12 13:00 8/18/12 16:00 8/19/12 1:50 8/19/12 11:40 8/20/12 16:50 8/21/12 13:10 8/23/12 15:00 8/24/12 14:50 8/25/12 16:30 8/26/12 8:30

2,275 976 1,302 5,441 28,243 271 126 37 344 3,126 2,944 17,648 592 1,396 264 240 1,360 1,439 1,805 1,146 502 1,693 781 519 14,837 118 332 63 752 2,065 196 600 1,834 1,663 2,150 1,545 1,346 126

0.08 0.03 0.04 0.15 1.13 0.01 0.004 0.003 0.01 0.10 0.10 0.21 0.02 0.05 0.01 0.01 0.04 0.05 0.06 0.04 0.02 0.06 0.03 0.02 0.40 0.003 0.01 0.002 0.02 0.07 0.01 0.02 0.06 0.06 0.07 0.05 0.04 0.004

3 1 1 39 33 0 0 0 0 4 3 34 1 2 0 0 2 2 2 1 1 2 1 1 105 1 0 0 1 2 1 1 2 2 2 2 10 0


Illicit Discharge Illicit Discharge Composite Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Storm Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Storm Composite Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Composite Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge Illicit Discharge

8/28/2012

7:37

8/28/2012

14:35

9/17/2012

4:05

9/17/2012

5:22

9/26/2012

9:51

9/26/2012

12:10

0.53 0.34 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.43

18.4 8.9 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4 113.7

0.53 0.53 0.53 0.53 0.53 0.82 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.22 0.53 0.53 0.53 0.53 0.53 0.53 0.53 0.53

18.4 18.4 18.4 18.4 18.4 143.0 18.4 18.4 18.4 18.4 18.4 18.4 18.4 5.0 18.4 18.4 18.4 18.4 18.4 18.4 18.4 18.4

8/27/12 7:20 8/28/12 7:20 8/29/12 9:40 8/30/12 8:40 8/31/12 7:20 9/1/12 8:00 9/2/12 7:40 9/3/12 8:30 9/4/12 7:20 9/5/12 2:20 9/6/12 7:30 9/8/12 7:30 9/9/12 8:00 9/10/12 8:00 9/11/12 8:10 9/12/12 5:40 9/12/12 9:30 9/13/12 7:00 9/14/12 7:00 9/15/12 9:50 9/16/12 9:20 9/17/12 3:30 9/18/12 8:20 9/19/12 7:50 9/20/12 7:40 9/21/12 10:00 9/22/12 7:20 9/23/12 7:00 9/23/12 12:30 9/26/12 9:30 9/27/12 9:20 9/28/12 8:20 9/29/12 9:00 9/30/12 7:40 10/1/12 10:10 10/2/12 9:40 10/3/12 9:00 10/4/12 8:50

Capitol Region Watershed District 2012 Monitoring Report 85

8/27/12 12:50 8/28/12 15:00 8/29/12 13:50 8/30/12 16:10 8/31/12 11:50 9/1/12 12:50 9/2/12 14:10 9/3/12 12:00 9/4/12 13:50 9/5/12 12:10 9/6/12 14:10 9/8/12 12:20 9/9/12 15:50 9/10/12 12:10 9/11/12 13:50 9/12/12 6:30 9/12/12 18:40 9/13/12 15:20 9/14/12 10:10 9/15/12 12:40 9/16/12 13:00 9/17/12 8:40 9/18/12 13:10 9/19/12 16:10 9/20/12 13:00 9/21/12 14:30 9/22/12 9:50 9/23/12 8:10 9/23/12 14:20 9/26/12 13:10 9/27/12 11:50 9/28/12 12:00 9/29/12 13:00 9/30/12 15:00 10/1/12 14:40 10/2/12 15:20 10/3/12 15:20 10/4/12 12:10

1,624 1,847 751 1,550 1,187 1,098 1,592 709 1,363 1,046 2,126 1,132 2,637 939 1,183 40 1,496 1,934 1,083 448 730 6,395 1,329 2,800 1,375 977 596 2,227 223 462 197 397 632 1,441 710 830 637 330

0.05 0.04 0.02 0.05 0.04 0.04 0.05 0.02 0.05 0.03 0.07 0.04 0.09 0.03 0.04 0.001 0.05 0.06 0.04 0.01 0.02 0.33 0.04 0.09 0.05 0.03 0.02 0.07 0.01 0.01 0.01 0.01 0.02 0.05 0.02 0.03 0.02 0.01

2 1 1 2 1 1 2 1 2 1 2 1 3 1 1 0 2 2 1 1 1 57 2 3 2 1 1 3 0 0 0 0 1 2 1 1 1 0


Illicit Discharge Illicit Discharge Storm Storm Illicit Discharge Illicit Discharge Illicit Discharge Storm

0.53 0.53 0.43 0.43

18.4 18.4 113.7 113.7

0.53 0.53 0.53 0.43

18.4 18.4 18.4 113.7

1.30 0.86 0.43

52.4 120.0 113.7

Storm Flow-Weighted Average

0.50

Illicit Discharge Flow-Weighted Average

0.52

Total Flow-Weighted Average

Storm Composite Storm Composite Storm

10/24/2012 10/25/2012

17:05 5:04

10/24/2012 10/25/2012

20:54 5:37

10/5/12 8:00 10/6/12 8:30 10/9/12 9:10 10/13/12 13:20 10/16/12 14:50 10/17/12 11:10 10/22/12 9:20 10/23/12 4:10 10/24/12 15:10 10/25/12 4:40 11/6/12 2:40

10/5/12 16:00 10/6/12 10:00 10/9/12 10:50 10/13/12 20:50 10/16/12 17:10 10/17/12 16:40 10/22/12 10:10 10/23/12 17:40 10/25/12 4:30 10/26/12 23:20 11/6/12 21:20

997 699 98 3,917 104 1,292 27 4,518 9,887 333,461 19,266

0.03 0.02 0.003 0.11 0.003 0.04 0.001 0.12 0.80 17.90 0.52

1 1 1 28 0 1 0 32 32 2,498 137

125.0

Como 7 Storm Subtotal

1,443,373

45.28

11,263

18.2

Illicit Discharge Subtotal

157,373

5.16

179

0.50

114.5

Como 7 Total

1,600,746

50.44

11,442

TP (mg/L)

TSS (mg/L)

Interval Volume (cf)

Interval TP (lb)

Interval TSS (lb)

0.24 0.24 0.24 0.24 0.24 0.24 0.24 0.10 0.20 0.23 0.24 0.43 0.29 0.24 0.24 0.26 0.17 0.24 0.24

22.1 22.1 22.1 22.1 22.1 22.1 22.1 13.3 15.2 7.4 22.1 43.6 21.7 22.1 22.1 65.6 10.4 22.1 22.1

4/2/2012 23:30

18,895

4/7/2012 12:30 4/15/2012 1:50 4/21/2012 21:20 4/25/2012 3:20 4/28/2012 11:10 5/1/2012 21:30 5/2/2012 12:50 5/3/2012 12:50 5/5/2012 14:10 5/19/2012 18:50 5/23/2012 20:50 5/27/2012 5:40 6/6/2012 18:40 6/10/2012 21:10 6/14/2012 10:00 6/17/2012 11:10 7/2/2012 6:40 7/6/2012 18:30

155,209 28,858 860,948 111,095 24,898 114,248 105,494 242,166 564,029 972,611 360,650 2,060,047 26,013 30,366 261,814 664,651 790,688 5,287

0.28 2.33 0.43 12.90 1.66 0.37 1.71 0.66 3.02 8.10 14.57 9.68 37.29 0.39 0.45 4.25 7.05 11.85 0.08

26 214 40 1,188 153 34 158 88 230 261 1,342 982 2,791 36 42 1,072 432 1,091 7

Golf Course Pond Outlet Sample Type Storm Storm Storm Storm Storm Storm Storm Storm Composite Storm Composite Storm Composite Storm Storm Composite Storm Composite Storm Storm Storm Composite Storm Composite Storm Storm

Sample Collection Time Start Start Date End Date Time

End Time

5/2/2012 5/2/2012 5/4/2012

0:19 13:33 10:33

5/2/2012 5/3/2012 5/5/2012

12:46 12:49 8:22

5/19/2012 5/24/2012

20:43 0:57

5/21/2012 5/24/2012

10:47 7:04

6/10/2012 6/14/2012

23:53 11:16

6/11/2012 6/15/2012

11:03 8:00

Loading Interval Start 3/30/2012 8:30 4/2/2012 23:40 4/7/2012 12:40 4/15/2012 2:00 4/21/2012 21:30 4/25/2012 3:30 4/28/2012 11:20 5/1/2012 21:40 5/2/2012 13:00 5/3/2012 13:00 5/5/2012 14:20 5/19/2012 19:00 5/23/2012 21:00 5/31/2012 14:30 6/6/2012 18:50 6/10/2012 21:20 6/14/2012 10:10 6/17/2012 11:20 7/5/2012 8:40

Capitol Region Watershed District 2012 Monitoring Report 86

End


Storm Composite Storm Composite Storm Storm Composite Storm Composite Storm Storm Composite Storm Composite Storm Composite Storm

0.43 0.24 0.24 0.28 0.27 0.24 0.18 0.13 0.14 0.24

18.6 22.1 22.1 21.0 23.8 22.1 21.0 11.5 14.1 22.1

7/6/2012 18:40 7/13/2012 4:20 7/13/2012 16:40 7/18/2012 2:20 7/19/2012 9:00 7/21/2012 6:40 7/24/2012 5:40 7/28/2012 23:00 8/3/2012 23:10 8/15/2012 8:20

7/13/2012 4:10 7/13/2012 16:30 7/18/2012 2:10 7/19/2012 8:50 7/21/2012 6:30 7/24/2012 5:30 7/28/2012 22:50 8/3/2012 23:00 8/15/2012 8:10 9/18/2012 6:20

422,208 16,060 157,627 218,827 291,437 449,188 199,880 319,773 258,362 235,448

11.33 0.24 2.36 3.82 4.91 6.73 2.25 2.60 2.26 3.53

490 22 217 287 433 620 262 230 227 325

Storm

0.24

22.1

9/18/2012 6:30

9/19/2012 14:40

114,562

1.72

158

Golf Course Pond Total Flow-Weighted Average

0.25

21.4

Golf Course Pond Total

10,081,339

158.8

13,456

Como 7 Subwatershed Storm Flow-Weighted Average Como 7 Subwatershed Illicit Discharge Flow-Weighted Average

0.28 0.52

34.4 18.2

Como 7 Subwatershed Storm Total Como 7 Subwatershed Illicit Discharge Total

11,524,712 157,373

204.12 5.16

24,719 179

Como 7 Subwatershed Total Flow-Weighted Average

0.29

34.1

Como 7 Subwatershed Total

11,682,085

209.27

24,898

7/6/2012

22:01

7/8/2012

8:31

7/18/2012 7/19/2012

10:54 10:19

7/19/2012 7/20/2012

8:49 8:08

7/24/2012 7/30/2012 8/4/2012

11:42 9:44 1:13

7/25/2012 7/31/2012 8/5/2012

4:51 4:19 12:12

Note: Italics indicate estimated concentrations based on average storm flow and illicit discharge concentrations.

Capitol Region Watershed District 2012 Monitoring Report 87


Capitol Region Watershed District 2012 Monitoring Report 88


Appendix A.2

East Kittsondale Subwatershed

The East Kittsondale subwatershed is located in the southern portion of CRWD and drains 1,116 acres of St. Paul (Figure 36). East Kittsondale is the smallest of the four major subwatersheds monitored by CRWD. The subwatershed empties into the Mississippi River, downstream of the confluence of the Minnesota and Mississippi Rivers. There are no surface water bodies in the subwatershed. Land use in the subwatershed is largely residential, with 46% impervious surface cover (CRWD, 2000). CRWD operates a full water quality monitoring station in the East Kittsondale subwatershed. The station it is not located at the true outlet to the river because it is not possible to monitor any further downstream due to the depth of the storm sewer beneath the ground surface.

East Kittsondale monitoring station

Entrance into East Kittsondale

Capitol Region Watershed District 2012 Monitoring Report 89


Figure 36. Sampling Sites in the East Kittsondale Subwatershed.

Capitol Region Watershed District 2012 Monitoring Report 90


Table 19. 2005-2012 East Kittsondale Monitoring Results. 2005 2006 Subwatershed Area (ac) 1,116 1,116 Total Rainfall (inches) 29.28 24.13 Number of Monitoring Days 200 210 Number of Storm Sampling Events 18 15 Number of Storm Intervals 23 26 Number of Illicit Discharge Sampling Events NA NA Number of Illicit Discharge Intervals NA NA Number of Base Sampling Events 1 8 Number of Baseflow Intervals 41 21 Total Discharge (cf) 27,816,625 39,689,928 Storm Flow Subtotal (cf) 21,125,831 25,397,422 Illicit Discharge Subtotal (cf) NA NA Baseflow Subtotal (cf) 6,690,794 14,292,506 Average TSS Concentration (mg/L) 133 171 Total FWA TSS Concentration (mg/L) 132 173 Storm FWA TSS Concentration (mg/L) 133 266 Illicit Discharge FWA TSS (mg/L) NA NA Base FWA TSS Concentration (mg/L) 4 6 Total TSS Loading (lbs) 230,190 427,494 Storm TSS Loading (lbs) 228,519 421,821 Illicit Discharge TSS Load (lbs) NA NA Base TSS Loading (lbs) 1,671 5,673 Total TSS Yield (lb/ac) 206 383 Normalized Total TSS Yield (lb/ac/in runoff) 30 39 Average TP Concentration (mg/L) 0.307 0.370 Total FWA TP Concentration (mg/L) 0.230 0.380 Storm FWA TP Concentration (mg/L) 0.280 0.540 Illicit Discharge FWA TP (mg/L) NA NA Base FWA TP Concentration (mg/L) 0.060 0.080 Total TP Loading (lbs) 398 931 Storm TP Loading (lbs) 373 861 Illicit Discharge TP Load (lbs) NA NA Base TP Loading (lbs) 25 70 Total TP Yield (lb/ac) 0.357 0.834 Normalized Total TP Yield (lb/ac/in runoff) 0.052 0.085 NA: Not available. Illicit discharge events were not monitored or sampled until 2009.

2007 1,116 13.96 225 25 43 NA NA 11 42 58,852,320 45,045,199 NA 13,806,121 279 316 403 NA 32 1,161,807 1,134,452 NA 27,354 1,038 71 0.350 0.350 0.440 NA 0.080 1,302 1,236 NA 66 1.167 0.080

2008 1,116 18.89 217 12 37 NA NA 11 38 35,342,806 24,635,756 NA 10,707,050 169 214 291 NA 36 471,176 447,229 NA 23,877 422 48 0.392 0.480 0.584 NA 0.240 1,058 898 NA 161 0.948 0.109

2009 1,116 20.95 277 25 58 8 41 25 82 44,095,386 30,705,350 4,211,844 9,178,141 100 112 141 98 20 308,358 271,189 25,722 11,360 276 25 0.289 0.291 0.345 0.184 0.158 801 662 49 90 0.718 0.066

Capitol Region Watershed District 2012 Monitoring Report 91

2010 1,116 35.61 325 19 54 NA NA 20 58 66,983,674 50,937,930 NA 16,045,744 106 185 241 NA 7 773,129 766,063 NA 7,066 693 42 0.254 0.341 0.431 NA 0.056 1,425 1,369 NA 56 1.277 0.077

2011 1,116 33.62 365 13 34 0 0 18 34 76,282,660 36,668,961 0 39,613,699 117 122 243 0 10 580,026 555,801 0 24,225 520 28 0.166 0.186 0.316 0.000 0.066 886 724 0 162 0.794 0.041

2012 1,116 30.26 360 20 40 0 3 17 45 55,261,249 36,530,284 0 12,990,455 84 123 160 NA 5 425,599 365,152 NA 4,113 381 28 0.187 0.245 0.302 NA 0.054 845 690 NA 44 0.757 0.056


Figure 37. 2012 East Kittsondale Level, Velocity, and Rainfall. Capitol Region Watershed District 2012 Monitoring Report 92


Table 20. 2012 East Kittsondale Laboratory Data. East Kittsondale Sample Type Base Grab Base Grab Base Grab Base Grab Base Composite Base Grab Base Composite Base Grab Base Grab Base Grab Base Composite Base Grab Base Grab Base Composite Base Composite Base Grab Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Grab

Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Grab Storm Composite Storm Grab Storm Composite

Sampling Start Date/Time 01/04/2012 09:40 01/04/2012 10:00 02/08/2012 09:45 03/29/2012 10:35 04/23/2012 09:03 04/24/2012 09:15 05/10/2012 13:51 05/11/2012 08:20 05/22/2012 08:40 06/04/2012 08:50 06/04/2012 09:11 06/22/2012 08:45 07/02/2012 09:06 07/02/2012 09:34 07/16/2012 09:31 07/16/2012 09:00 07/31/2012 09:45 07/31/2012 09:32 08/13/2012 09:38 08/13/2012 09:59 08/27/2012 09:40 08/28/2012 09:05 09/10/2012 09:00 09/10/2012 08:59 09/24/2012 09:10 09/24/2012 09:00 10/10/2012 09:15 10/10/2012 09:33 10/30/2012 09:25 10/30/2012 09:45 11/29/2012 09:25 12/21/2012 09:30

04/17/2012 22:49 04/21/2012 16:25 04/28/2012 11:45 05/01/2012 21:59 05/03/2012 10:30 05/04/2012 18:57 05/05/2012 14:40 05/19/2012 19:12 05/24/2012 08:20 05/23/2012 20:57 06/14/2012 10:10 06/14/2012 09:55 06/16/2012 09:25 06/17/2012 15:19 07/06/2012 19:09 07/13/2012 04:15 07/18/2012 02:57 07/18/2012 10:34 07/24/2012 08:50 07/24/2012 05:41 08/03/2012 23:36 08/15/2012 09:10 09/17/2012 04:47 10/25/2012 09:15 11/11/2012 00:23

Sampling End Date/Time 01/04/2012 09:40 01/04/2012 10:00 02/08/2012 09:45 03/29/2012 10:35 04/24/2012 04:40 04/24/2012 09:15 05/11/2012 08:02 05/11/2012 08:20 05/22/2012 08:40 06/04/2012 08:50 06/05/2012 02:50 06/22/2012 08:45 07/02/2012 09:06 07/03/2012 04:00 07/16/2012 08:17 07/16/2012 09:00 07/31/2012 09:45 08/01/2012 08:14 08/13/2012 09:38 08/14/2012 08:08 08/27/2012 09:40 08/29/2012 06:43 09/10/2012 09:00 09/11/2012 08:35 09/24/2012 09:10 09/25/2012 09:00 10/10/2012 09:15 10/11/2012 08:52 10/30/2012 09:25 10/31/2012 08:39 11/29/2012 09:25 12/21/2012 09:30 Base Average

Ortho-P mg/L 0.010 0.021 0.010 0.010 0.024 0.026 0.022 0.040 0.051 0.150 0.031 0.010 0.023 0.025 0.041 0.010 0.010 0.010 0.010 0.028

Cl mg/L 547.0 376.0 337.0 363.0 379.0 333.0 355.0 291.0 324.0 262.0 333.0 334.0 323.0 324.0 281.0 313.0 323.0 332.0 1,240.0 387.9

Cd mg/L 0.00008 0.00008 0.00008 0.00008 0.00008 0.00008 0.00008 0.00008 0.00011 0.00036 0.00012 0.00008 0.000082 0.00008 0.00008 0.0069 0.00008 0.00008 0.00011 0.00046

Cr mg/L 0.00052 0.00055 0.00062 0.00071 0.00070 0.00050 0.00190 0.00074 0.00098 0.00130 0.00100 0.00050 0.00100 0.00290 0.00078 0.00110 0.00100 0.00063 0.00050 0.00094

Cu mg/L 0.00370 0.00100 0.00190 0.00240 0.00260 0.00390 0.02180 0.00260 0.00410 0.00830 0.00340 0.00260 0.00350 0.00260 0.00240 0.00230 0.00210 0.00076 0.00170 0.00388

Pb mg/L 0.00037 0.00011 0.00040 0.00230 0.00100 0.00020 0.00140 0.00012 0.00088 0.00088 0.00029 0.00057 0.00077 0.00045 0.00036 0.00120 0.00300 0.00010 0.00010 0.00076

04/18/2012 05:15 04/22/2012 01:14 04/28/2012 14:22 05/02/2012 03:01 05/03/2012 12:35 05/04/2012 21:13 05/05/2012 15:56 05/19/2012 22:09 05/24/2012 08:20 05/24/2012 01:30 06/14/2012 10:10 06/14/2012 11:43 06/16/2012 12:22 06/17/2012 18:29 07/07/2012 00:33 07/13/2012 08:05 07/18/2012 04:37 07/18/2012 12:59 07/24/2012 08:50 07/24/2012 12:01 08/04/2012 02:23 08/15/2012 09:10 09/17/2012 05:32 10/25/2012 09:15 11/11/2012 01:51 Storm Average Annual Average Annual Maximum Annual Minimum Annual Median

0.034 0.024 0.010 0.010 0.010 0.010 0.010 0.036 0.022 0.010 0.053 0.021 0.025 0.150 0.010 0.022

26.7 19.1 32.6 9.9 6.4 11.5 5.6 17.4 8.6 7.4 8.6 11.7 7.7 9.7 21.1 2.8 7.0 12.8 12.6 205.3 1,240.0 2.8 262.0

0.00016 0.000093 0.00016 0.0002 0.00048 0.00022 0.00016 0.00042 0.00037 0.00026 0.000097 0.00024 0.00028 0.00025 0.0002 0.00025 0.00011 0.00023 0.00037 0.00024 0.00035 0.00690 0.00008 0.00012

0.00750 0.00430 0.00700 0.00610 0.01760 0.00930 0.00800 0.01150 0.01200 0.00730 0.00490 0.00880 0.00740 0.00650 0.00700 0.01320 0.00430 0.00600 0.00850 0.00827 0.00461 0.01760 0.00050 0.00360

0.02850 0.01110 0.02080 0.01980 0.04270 0.02690 0.01800 0.05050 0.02560 0.02360 0.01190 0.02570 0.03110 0.02360 0.02880 0.02410 0.01120 0.02380 0.03970 0.02565 0.01476 0.05050 0.00076 0.01115

0.01900 0.00950 0.01030 0.02940 0.06440 0.03270 0.02330 0.05220 0.02660 0.02810 0.01030 0.02940 0.03320 0.02150 0.01940 0.02780 0.00830 0.02190 0.02760 0.02605 0.01341 0.06440 0.00010 0.00565

K mg/L 4.29 4.29 2.87 2.37 1.35 1.69 2.07 2.51 4.29 1.35 2.37

Ni mg/L 0.00190 0.00160 0.00170 0.00180 0.00150 0.00150 0.00220 0.00150 0.00200 0.00400 0.00380 0.00150 0.00066 0.00140 0.00170 0.00260 0.00190 0.00160 0.00220 0.00195

Zn mg/L 0.0050 0.0050 0.0064 0.0082 0.0123 0.0113 0.0174 0.0084 0.0121 0.0232 0.0114 0.0102 0.0161 0.0062 0.0071 0.7940 0.0112 0.0050 0.0134 0.0518

NH3 mg/L 0.040 0.075 0.040 0.040 0.094 0.160 0.260 0.160 0.140 0.500 0.061 0.042 0.086 0.067 0.081 0.065 0.091 0.051 0.063 0.111

0.00460 0.00180 0.00330 0.00380 0.01090 0.00420 0.00310 0.00830 0.00780 0.00430 0.00120 0.00430 0.00550 0.00450 0.00560 0.00720 0.00260 0.00490 0.00780 0.00504 0.00349 0.01090 0.00066 0.00260

0.1280 0.0587 0.1060 0.1120 0.1960 0.1480 0.1010 0.2380 0.1370 0.1230 0.0578 0.1380 0.1660 0.1370 0.1790 0.1210 0.0564 0.1410 0.2230 0.1351 0.0934 0.7940 0.0050 0.0571

0.079 0.040 0.080 0.040 0.260 0.380 0.330 0.280 0.500 0.220 0.130 0.560 0.440 1.100 0.560 0.260 0.055 0.300 0.110 0.530 0.313 0.215 1.100 0.040 0.110

1.0 1.0 1.0 1.0 1.0 1.0 6.2 1.0 1.0 1.0 1.0 1.0 1.0 1.1 1.0 1.0 1.0 1.0 1.0 1.3

Total P mg/L 0.05 0.05 0.05 0.05 0.05 0.05 0.11 0.05 0.05 0.20 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05

NO3 mg/L 0.66 0.82 1.80 1.90 0.74 0.90 0.83 0.99 0.51 0.45 0.21 0.60 0.28 0.46 0.23 0.20 0.25 0.20 0.67

2.6 1.2 3.1 1.7 1.9 5.3 3.8 4.5 2.3 1.5 1.0 1.0 1.0 1.7 1.0 1.0 1.1 3.8 2.2 1.7 6.2 1.0 1.0

0.31 0.17 0.24 0.05 0.34 0.39 0.24 0.56 0.36 0.22 0.13 0.18 0.31 0.43 0.36 0.25 0.12 0.28 0.52 0.68 0.31 0.19 0.68 0.05 0.12

0.73 0.41 0.55 0.36 0.33 0.29 0.34 0.25 0.30 0.38 0.32 0.67 0.35 0.93 0.76 0.42 0.34 0.22 0.44 0.56 1.90 0.20 0.42

TKN mg/L

0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

NO2 +NO3 mg/L 0.67 0.83 1.80 1.90 0.75 0.93 0.85 1.00 0.51 0.46 0.22 0.60 0.28 0.47 0.24 0.21 0.25 0.22 0.68

TDS mg/L 1,320 948 990 948 1,060 977 946 1,130 982 956 1,010 933 934 909 920 968 936 2,480 1,075

0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

0.75 0.41 0.59 0.37 0.34 0.32 0.36 0.28 0.34 0.43 0.35 0.69 0.39 0.97 0.78 0.44 0.35 0.27 0.47 0.57 1.90 0.21 0.44

86 78 124 62 106 62 24 102 74 72 50 44 78 80 54 68 82 104 75 575 2,480 24 517

NO2 mg/L

Note: Nitrate (NO3 ), Nitrite (NO2 ), and CBOD values may contain estimated unflagged data

Red Text

Capitol Region Watershed District 2012 Monitoring Report 93

TSS mg/L 2.0 2.0 5.8 4.0 4.0 4.0 26.8 2.0 9.1 17.0 4.0 4.8 6.8 2.4 2.2 4.0 7.3 2.0 2.0 5.9

TVS mg/L 229.0 258.0 104.0 256.0 185.0 175.0 255.0 137.0 201.0 130.0 151.0 158.0 186.6

116.0 50.2 54.0 108.0 225.0 152.0 106.0 400.0 203.0 183.0 40.2 142.0 139.0 154.0 132.0 122.0 38.9 81.4 88.1 610.0 157.2 83.5 610.0 2.0 38.9

40.0 55.0 66.0 57.0 61.0 115.0 93.5 198.0 102.0 6.2 60.7 45.3 48.4 69.9 50.7 25.0 68.4 119.0 258.0 6.2 103.0

1 3 3 1 2

Hardness mg/L 603.0 698.0 565.0 585.0 517.0 508.0 482.0 473.0 465.0 412.0 513.0 506.0 479.0 505.0 524.0 568.0 525.0 523.0 594.0 528.7

77 77 17 77 1 3

62.0 27.8 52.0 43.3 75.2 51.2 36.1 79.3 54.0 41.4 25.9 46.0 53.1 52.4 57.2 48.3 31.6 54.1 86.2 51.4 290.1 698.0 25.9 249.1

VSS mg/L

2.0 2.0 71.0 2.0 2.0 2.0 5.7 2.0 2.4 197.0 2.0 3.3 65.4 2.0 4.6 2.7 3.4 2.0 2.0 19.8

SO4 mg/L 100.0 94.0 95.0 92.2 90.8 86.5 87.5 80.4 80.6 72.8 84.4 89.1 92.6 96.9 89.8 92.9 100.0 102.0 103.0 91.1

15.7 11.5 5.5 32.0 8.0 3.7 6.4 26.1 3.9 3.4 11.6 17.0 197.0 2.0 3.4

6.8 4.8 7.3 2.8 2.9 2.5 2.5 5.0 2.5 3.6 4.4 4.9 3.1 4.6 6.6 2.5 2.5 4.5 4.1 48.8 103.0 2.5 72.8

CBOD mg/L

Fl mg/L

Ca mg/L

Mg mg/L

pH E. coli Std. Units mpn/100 mL 8.1 19 8.0 8 7.7 6 7.7 1 8.0 26 8.0 89 89 8.1 8.0 111 461 8.2 261 345 8.5 75 8.3 96 8.3 488 8.4 325 8.4 71 8.0 43 8.4 8.0 8 8.0 22 8.1 134

0.93 0.93

137 128 132 132.3

41.6 39.1 42.6 41.1

0.10 0.10 0.10 -

16.1 12.9

4.1 3.9

6.9 6.4 7.0 7.2 7.4 6.4 7.2 6.4 6.3 6.9 6.1 6.4 6.4 6.2 6.6

0.10 0.31 0.93 0.10 0.10

9.3 15.8 27.1 16.2 59.8 137 9.3 21.6

2.1 3.6 4.5 3.6 17.7 42.6 2.1 4.3

6.9 6.9 6.8 6.7 7.4 8.5 6.1 7.6

Actual value less than number (<) Reporting limit halved Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit Not collected Outlier not included in averages

1,986 5,200 7,300 9,800 7,500 6,357 1,430 9,800 1 93


Capitol Region Watershed District 2012 Monitoring Report 94


Table 21. 2012 East Kittsondale Subwatershed Loading.

Sample Type Base Grab Base Grab Snowmelt Base Snowmelt Base Storm Base Storm Base Storm Base Grab Storm Base Storm Base Storm Storm Composite Base Storm Composite Base Composite Storm Composite Base Storm Composite Base Storm Composite Base Storm Composite Storm Composite Storm Base Storm Base Composite

Sample Collection Time Start Start Date End Date Time 1/4/2012 2/8/2012

3/29/2012

9:40 9:45

10:35

1/4/2012 2/8/2012

3/29/2012

End Time 9:40

TP (mg/L)

9:45

0.05 0.05

10:35

0.31 0.05 0.31 0.05 0.31 0.05 0.31 0.05 0.31 0.05

4/17/2012

22:49

4/18/2012

5:15

4/21/2012 4/23/2012 4/28/2012

16:25 9:03 11:45

4/22/2012 4/24/2012 4/28/2012

1:14 4:40 14:22

5/1/2012

21:59

5/2/2012

3:01

5/3/2012

10:30

5/3/2012

12:35

5/4/2012 5/5/2012

18:57 14:40

5/4/2012 5/5/2012

21:13 15:56

5/10/2012

13:51

5/11/2012

8:02

0.31 0.05 0.31 0.05 0.31 0.31 0.05 0.17 0.05 0.24 0.05 0.05 0.05 0.34 0.05 0.39 0.24 0.31 0.05 0.31 0.05

TSS (mg/L) 2 2 157.2 5.9 157.2 5.9 157.2 5.9 157.2 5.9 157.2 5.8 157.2 5.9 157.2 5.9 157.2 116 5.9 55 4 54 5.9 108 5.9 225 5.9 152 106 157.2 5.9 157.2 4

Loading Interval Start 1/1/2012 0:00 1/21/2012 1:45 2/28/2012 17:00 3/3/2012 7:00 3/6/2012 10:15 3/8/2012 9:30 3/12/2012 0:00 3/12/2012 18:15 3/19/2012 19:00 3/20/2012 3:15 3/21/2012 23:30 3/23/2012 16:45 3/29/2012 21:30 3/30/2012 14:10 4/2/2012 23:40 4/3/2012 13:10 4/15/2012 1:40 4/17/2012 22:10 4/18/2012 19:40 4/21/2012 14:20 4/22/2012 21:30 4/28/2012 10:00 4/28/2012 21:10 5/1/2012 21:40 5/2/2012 9:40 5/3/2012 10:10 5/3/2012 16:50 5/4/2012 18:40 5/5/2012 14:10 5/6/2012 2:20 5/6/2012 16:00 5/8/2012 11:30 5/9/2012 3:00

End

Interval Volume (cf)

1/21/2012 1:30

873,256

2/28/2012 16:45 3/3/2012 6:45 3/6/2012 10:00 3/8/2012 9:15 3/11/2012 23:45 3/12/2012 18:00 3/19/2012 18:45 3/20/2012 3:00 3/21/2012 23:15 3/23/2012 16:30 3/29/2012 21:20 3/30/2012 14:00 4/2/2012 23:30 4/3/2012 13:00 4/15/2012 1:30 4/17/2012 22:00 4/18/2012 19:30 4/21/2012 14:10 4/22/2012 21:20 4/28/2012 9:50 4/28/2012 21:00 5/1/2012 21:30 5/2/2012 9:30 5/3/2012 10:00 5/3/2012 16:40 5/4/2012 18:30 5/5/2012 14:00 5/6/2012 2:10 5/6/2012 15:50 5/8/2012 11:20 5/9/2012 2:50 5/19/2012 18:40

2,145,888 3,557,741 140,324 1,151,236 391,104 641,738 326,152 607,614 58,642 413,153 191,545 217,445 70,334 560,772 533,035 2,590,803 530,010 101,691 630,083 365,605 345,752 207,496 1,188,042 78,699 864,424 52,013 659,713 1,042,309 2,223,377 122,746 344,696 375,217

Capitol Region Watershed District 2012 Monitoring Report 95

Interval TP (lb) 2.73 6.70 68.85 0.44 22.28 1.22 12.42 1.02 11.76 0.18 8.00 0.60 4.21 0.22 10.85 1.66 50.14 10.26 0.32 6.69 1.14 5.18 0.65 3.71 0.25 18.35 0.16 16.06 15.62 43.03 0.38 6.67 1.17

Interval TSS (lb) 109 268 34,913 52 11,298 144 6,298 120 5,963 22 4,054 69 2,134 26 5,503 196 25,425 3,838 37 2,163 91 1,166 76 8,010 29 12,142 19 6,260 6,897 21,819 45 3,383 94


Storm Composite Base Grab Storm Composite Storm Storm Base Composite Storm Base Storm Base Storm Composite Base Storm Composite Storm Composite Storm Storm Base Storm Base Base Base Base Base Composite Storm Composite Base Storm Composite Storm Base Composite Storm Composite Storm Composite Base Storm Base Storm Composite Base Storm Base Composite Storm Composite

5/19/2012 5/22/2012 5/23/2012

19:12 8:40 20:57

5/19/2012 5/22/2012 5/24/2012

22:09 8:40 1:30

6/4/2012

9:11

6/5/2012

2:50

6/14/2012

9:55

6/14/2012

11:43

6/16/2012 6/17/2012

9:25 15:19

6/16/2012 6/17/2012

12:22 18:29

7/2/2012 7/6/2012

9:34 19:09

7/3/2012 7/7/2012

4:00 0:33

7/13/2012

4:15

7/13/2012

8:05

7/16/2012 7/18/2012 7/18/2012

9:31 2:57 10:34

7/17/2012 7/18/2012 7/18/2012

8:17 4:37 12:59

7/24/2012

5:41

7/24/2012

12:01

7/31/2012 8/3/2012

9:32 23:36

8/1/2012 8/4/2012

8:14 2:23

0.56 0.05 0.36 0.31 0.31 0.11 0.31 0.05 0.31 0.05 0.22 0.05 0.13 0.18 0.31 0.31 0.05 0.31 0.05 0.05 0.05 0.05 0.05 0.31 0.05 0.43 0.31 0.2 0.36 0.25 0.05 0.31 0.05 0.12 0.05 0.31 0.05 0.28

400 4 203 157.2 157.2 26.8 157.2 5.9 157.2 5.9 183 5.9 40.2 142 157.2 157.2 5.9 157.2 5.9 5.9 5.9 5.9 9.1 139 5.9 154 157.2 17 132 122 5.9 157.2 5.9 38.9 5.9 157.2 4 81.4

5/19/2012 18:50 5/20/2012 9:00 5/23/2012 20:50 5/26/2012 10:10 5/27/2012 19:30 5/29/2012 2:10 6/6/2012 19:10 6/7/2012 3:40 6/10/2012 21:10 6/11/2012 15:20 6/14/2012 9:40 6/15/2012 6:10 6/16/2012 8:40 6/17/2012 14:20 6/17/2012 23:20 6/19/2012 3:40 6/19/2012 17:10 6/20/2012 18:10 6/21/2012 21:10 6/25/2012 11:20 6/25/2012 18:30 6/26/2012 16:10 6/26/2012 17:00 7/6/2012 19:00 7/7/2012 10:40 7/13/2012 4:10 7/13/2012 17:30 7/13/2012 23:30 7/18/2012 2:40 7/18/2012 10:10 7/18/2012 20:20 7/21/2012 6:30 7/21/2012 18:40 7/24/2012 4:20 7/24/2012 23:10 7/28/2012 22:30 7/29/2012 22:40 8/3/2012 23:20

5/20/2012 8:50 5/23/2012 20:40 5/26/2012 10:00 5/27/2012 19:20 5/29/2012 2:00 6/6/2012 19:00 6/7/2012 3:30 6/10/2012 21:00 6/11/2012 15:10 6/14/2012 9:30 6/15/2012 6:00 6/16/2012 8:30 6/17/2012 14:10 6/17/2012 23:10 6/19/2012 3:30 6/19/2012 17:00 6/20/2012 18:00 6/21/2012 21:00 6/25/2012 11:10 6/25/2012 18:20 6/26/2012 16:00 6/26/2012 16:50 7/6/2012 18:50 7/7/2012 10:30 7/13/2012 4:00 7/13/2012 17:20 7/13/2012 23:20 7/18/2012 2:30 7/18/2012 10:00 7/18/2012 20:10 7/21/2012 6:20 7/21/2012 18:30 7/24/2012 4:10 7/24/2012 23:00 7/28/2012 22:20 7/29/2012 22:30 8/3/2012 23:10 8/4/2012 17:00

Capitol Region Watershed District 2012 Monitoring Report 96

804,249 101,790 5,061,987 897,221 1,011,265 284,014 456,842 126,114 615,377 96,462 1,409,598 49,746 844,054 450,757 1,319,217 914,793 67,202 309,313 139,030 19,006 32,497 3,035 528,282 897,668 263,242 768,233 723,861 236,027 241,560 895,551 125,954 1,407,069 135,362 1,070,242 178,464 776,115 207,940 571,469

28.12 0.32 113.76 17.36 19.57 1.95 8.84 0.39 11.91 0.30 19.36 0.16 6.85 5.07 25.53 17.70 0.21 5.99 0.43 0.06 0.10 0.01 1.65 17.37 0.82 20.62 14.01 2.95 5.43 13.98 0.39 27.23 0.42 8.02 0.56 15.02 0.65 9.99

20,082 25 64,148 8,805 9,924 475 4,483 46 6,039 36 16,103 18 2,118 3,996 12,946 8,977 25 3,035 51 7 12 1 300 7,789 97 7,386 7,104 250 1,991 6,821 46 13,808 50 2,599 66 7,616 52 2,904


Base Base Base Base Base Composite Storm Base Composite Base Composite Storm Composite Base Composite Base Composite Storm Base Composite Storm Composite Base Grab Snowmelt Base

0.05 0.05 0.05 0.05 0.05 0.31 0.05 0.05 0.52 0.05 0.05 0.31 0.05 0.68 0.05 0.31 0.05

5.9 5.9 5.9 5.9 4.8 157.2 6.8 2.4 88.1 2.2 4 157.2 7.3 610 2 157.2 5.9

Snowmelt Flow-Weighted Average

0.31

Storm Flow-Weighted Average Base Flow-Weighted Average Total Flow-Weighted Average

8/13/2012

9:59

8/14/2012

8:08

8/28/2012 9/10/2012 9/17/2012 9/24/2012 10/10/2012

9:05 8:59 4:47 9:00 9:33

8/29/2012 9/11/2012 9/17/2012 9/25/2012 10/11/2012

6:43 8:35 5:32 9:00 8:52

10/30/2012 11/11/2012 11/29/2012

9:45 0:23 9:25

10/31/2012 11/11/2012 11/29/2012

8:39 1:51 9:25

8/4/2012 17:10 8/8/2012 7:50 8/8/2012 12:20 8/9/2012 11:10 8/9/2012 14:50 8/15/2012 8:00 8/15/2012 16:40 9/1/2012 2:00 9/17/2012 3:40 9/18/2012 3:50 10/1/2012 6:30 10/24/2012 16:50 10/26/2012 16:10 11/11/2012 0:10 11/12/2012 2:00 12/15/2012 1:30 12/18/2012 6:00

8/8/2012 7:40 8/8/2012 12:10 8/9/2012 11:00 8/9/2012 14:40 8/15/2012 7:50 8/15/2012 16:30 9/17/2012 3:30 9/17/2012 3:30 9/18/2012 3:40 10/24/2012 16:40 10/24/2012 16:40 10/26/2012 16:00 11/11/2012 0:00 11/12/2012 1:50 12/15/2012 1:15 12/18/2012 5:45 12/31/2012 23:45

125,633 11,995 27,811 10,381 155,290 394,928 495,766 506,520 264,160 263,895 564,437 1,184,844 649,439 379,985 1,174,010 1,031,533 377,364

0.39 0.04 0.09 0.03 0.48 7.64 1.55 1.58 8.58 0.82 1.76 22.93 2.03 16.13 3.66 19.96 1.18

46 4 10 4 47 3,876 210 76 1,453 36 141 11,627 296 14,470 147 10,123 139

157.2

Snowmelt Subtotal

5,740,510

111.09

56,334

0.30

160.1

Storm Subtotal

36,530,284

689.92

365,152

0.05

5.1

Base Subtotal

12,990,455

43.82

4,113

0.24

123.4

Total

55,261,249

844.83

425,599

Note: Italics indicate estimated concentrations based on average base, snowmelt and storm flow concentrations.

Capitol Region Watershed District 2012 Monitoring Report 97


Capitol Region Watershed District 2012 Monitoring Report 98


Appendix A.3

Phalen Creek Subwatershed

Phalen Creek subwatershed is the eastern-most subwatershed in CRWD (Figure 38). Located entirely within the city limits of St. Paul, Phalen Creek drains 1,433 acres and outlets to the Mississippi River. CRWD monitors the Phalen Creek storm sewer near its outlet to the Mississippi River at the Bruce Vento Nature Sanctuary. Land use in the Phalen Creek subwatershed is a mix of industrial, commercial, and residential with approximately 50% impervious surfaces (CRWD, 2000).

Shaft Down to Phalen Creek Storm Sewer

Open Channel Flowing in to Phalen Creek

Capitol Region Watershed District 2012 Monitoring Report 99


Figure 38. Sampling Sites in the Phalen Creek Subwatershed. Capitol Region Watershed District 2012 Monitoring Report 100


Table 22. 2005-2012 Phalen Creek Monitoring Results. Subwatershed Area (ac) Total Rainfall (inches) Number of Monitoring Days Number of Storm Sampling Events Number of Storm Intervals Number of Snowmelt Sampling Events Number of Snowmelt Intervals Number of Baseflow Sampling Events Number of Baseflow Intervals Total Discharge (cf) Storm Flow Subtotal (cf) Snowmelt Flow Subtotal (cf) Baseflow Subtotal (cf) Average TSS Concentration (mg/L) Total FWA TSS Concentration (mg/L) Storm FWA TSS Concentration (mg/L) Snowmelt FWA TSS Concentration (mg/L) Base FWA TSS Concentration (mg/L) Total TSS Loading (lbs) Storm TSS Loading (lbs) Snowmelt TSS Loading (lbs) Base TSS Loading (lbs) Total TSS Yield (lb/ac) Normalized Total TSS Yield (lb/ac/in runoff) Average TP Concentration (mg/L) Total FWA TP Concentration (mg/L) Storm FWA TP Concentration (mg/L) Snowmelt FWA TP Concentration (mg/L) Base FWA TP Concentration (mg/L) Total TP Loading (lbs) Storm TP Loading (lbs) Snowmelt TP Loading (lbs) Base TP Loading (lbs) Total TP Yield (lb/ac) Normalized Total TP Yield (lb/ac/in runoff)

2005 1,433 29.28 197 15 23

2006 1,433 24.13 194 7 15

2007 1,433 13.96 134 16 22

2008 1,433 17.73 210 17 38

2009 1,433 20.34 262 18 33

2010 1,433 36.32 362 22 55

4 35 88,688,082 28,075,754

9 18 74,856,833 14,451,216

7 19 64,631,475 25,260,005

14 38 97,607,350 29,007,153

16 32 106,837,331 30,113,506

14 54 173,450,665 50,698,610

60,612,328 289 185 535

60,405,617 183 115 454

39,371,470 103 105 164

68,600,197 169 70 207

76,723,824 136 80 277

122,752,055 204 112 369

23 1,022,726 937,202

34 538,550 409,501

3 422,175 415,784

11 423,925 375,408

3 535,477 520,356

5 1,209,635 1,167,829

85,524 714 42 0.392 0.220 0.570

129,049 376 26 0.290 0.200 0.570

6,391 295 24 0.200 0.170 0.340

48,517 296 16 0.392 0.169 0.440

15,121 374 18 0.297 0.173 0.480

41,806 844 25 0.353 0.194 0.539

0.070 1242 993

0.200 914 518

0.060 674 536

0.055 1,033 796

0.053 1,157 902

0.052 2,104 1,706

249 0.867 0.051

396 0.638 0.044

138 0.470 0.038

237 0.721 0.038

255 0.807 0.040

398 1.468 0.044

Capitol Region Watershed District 2012 Monitoring Report 101

2011 1,433 33.62 365 6 29 6 8 21 43 179,835,227 38,703,641 9,361,953 131,769,633 34 28 92 53 8 316,563 221,169 30,974 64,419 221 6 0.161 0.131 0.276 0.269 0.079 1,474 667 157 650 1.029 0.030

2012 1,433 29.73 348 18 40 2 13 19 55 161,506,783 41,442,850 3,153,892 116,910,040 68 42 141 78 6 423,213 365,001 15,357 42,855 295 10 0.207 0.146 0.334 0.393 0.073 1,470 864 77 530 1.026 0.033


Figure 39. 2012 Phalen Creek Level, Discharge, and Rainfall. Capitol Region Watershed District 2012 Monitoring Report 102


Table 23. 2012 Phalen Creek Laboratory Data. Phalen Creek Sample Type Base Grab Base Grab Base Grab Base composite Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Grab Base Grab Base Composite Base Grab Base Composite Base Grab Base Grab

Snowmelt Grab Snowmelt Grab Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Grab

Sampling Start Date/Time 01/04/2012 12:30 02/08/2012 11:20 03/19/2012 09:10 04/23/2012 09:30 04/24/2012 09:40 05/10/2012 11:00 05/11/2012 08:50 05/22/2012 09:05 06/04/2012 10:40 06/05/2012 08:45 06/22/2012 11:10 07/02/2012 09:40 07/16/2012 09:30 07/16/2012 09:51 07/31/2012 11:08 07/31/2012 11:25 08/13/2012 09:47 08/13/2012 10:24 08/27/2012 10:04 08/27/2012 10:29 09/10/2012 11:15 09/10/2012 11:39 09/24/2012 09:45 09/26/2012 14:10 10/10/2012 11:30 10/10/2012 11:41 10/30/2012 09:50 10/30/2012 10:16 11/29/2012 11:50 12/21/2012 11:50

01/26/2012 12:30 03/06/2012 15:00 03/22/2012 11:35 04/17/2012 23:36 04/21/2012 21:26 05/01/2012 22:10 05/03/2012 10:36 05/04/2012 18:59 05/05/2012 14:36 05/23/2012 21:06 05/24/2012 08:40 06/14/2012 10:25 06/14/2012 10:13 06/16/2012 09:33 07/06/2012 19:04 07/13/2012 04:17 07/18/2012 02:45 07/18/2012 11:15 07/18/2012 10:27 07/24/2012 09:10 07/24/2012 06:10 07/29/2012 05:48 08/03/2012 23:43 08/15/2012 09:30 10/19/2012 06:25 10/24/2012 15:33 10/25/2012 11:43

Sampling End Date/Time 01/04/2012 12:30 02/08/2012 11:20 03/19/2012 09:10 04/24/2012 08:41 04/24/2012 09:40 05/10/2012 11:00 05/11/2012 08:50 05/22/2012 09:05 06/04/2012 10:40 06/05/2012 08:45 06/22/2012 11:10 07/02/2012 09:40 07/16/2012 09:30 07/17/2012 08:41 07/31/2012 11:08 08/01/2012 08:42 08/13/2012 09:47 08/13/2012 21:29 08/27/2012 10:04 08/27/2012 12:55 09/10/2012 11:15 09/10/2012 17:20 09/24/2012 09:45 09/26/2012 14:10 10/10/2012 11:30 10/11/2012 09:26 10/30/2012 09:50 10/30/2012 16:50 11/29/2012 11:50 12/21/2012 11:50 Base Average

Ortho-P mg/L 0.048 0.044 0.041 0.032 0.041 0.047 0.063 0.053 0.056 0.039 0.041 0.010 0.010 0.010 0.045 0.038 0.049 0.041 0.048 0.040

Cl mg/L 245.0 151.0 150.0 150.0 158.0 149.0 25.2 146.0 151.0 144.0 144.0 146.0 142.0 146.0 150.0 147.0 149.0 157.0 180.0 149.0

Cd mg/L 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000140 0.000089 0.000080 0.000080 0.000080 0.000080 0.000080 0.000100 0.000080 0.000080 0.000085

Cr mg/L 0.00110 0.00190 0.00074 0.00110 0.00130 0.00120 0.00050 0.00060 0.00084 0.00220 0.00100 0.00110 0.00100 0.00110 0.00083 0.00076 0.00180 0.00110 0.00067 0.00110

Cu mg/L 0.00130 0.00230 0.00067 0.00077 0.00140 0.00120 0.00220 0.00093 0.00078 0.00210 0.00170 0.00130 0.00170 0.00180 0.00230 0.00110 0.00460 0.00059 0.00057 0.00154

Pb mg/L 0.00045 0.00210 0.00024 0.00050 0.00260 0.00055 0.00050 0.00030 0.00041 0.00038 0.00038 0.00290 0.00047 0.00480 0.00028 0.00028 0.00320 0.00012 0.00017 0.00109

01/26/2012 12:30 03/06/2012 15:00 03/22/2012 11:35 04/18/2012 00:48 04/22/2012 00:53 05/02/2012 01:58 05/03/2012 12:35 05/04/2012 20:43 05/05/2012 16:14 05/24/2012 02:49 05/24/2012 08:40 06/14/2012 10:25 06/14/2012 13:46 06/16/2012 12:34 07/07/2012 00:33 07/13/2012 07:21 07/18/2012 03:39 07/18/2012 11:15 07/18/2012 11:53 07/24/2012 09:10 07/24/2012 11:19 07/29/2012 09:53 08/04/2012 02:10 08/15/2012 09:30 10/19/2012 15:41 10/25/2012 06:08 10/25/2012 11:43 Snowmelt Average Storm Average Annual Average Annual maximum Annual Minimum Annual Median

0.039 0.360 0.085 0.065 0.026 0.026 0.010 0.010 0.042 0.010 0.059 0.027 0.010 0.010 0.078 0.081 0.200 0.039 0.048 0.360 0.010 0.041

3,330.0 64.8 87.6 18.9 20.4 8.5 16.7 11.6 4.6 14.3 12.1 8.2 15.6 11.5 13.5 2.6 3.6 11.8 12.9 8.9 108.0 105.0 1,697.4 24.8 163.9 3,330.0 2.6 105.0

0.000410 0.000170 0.000120 0.000230 0.000110 0.000210 0.000390 0.000170 0.000210 0.000410 0.000230 0.000100 0.000530 0.000420 0.000350 0.000260 0.000270 0.000130 0.000080 0.000390 0.000088 0.000180 0.000290 0.000244 0.000172 0.000530 0.000080 0.000100

0.00950 0.00610 0.00540 0.00610 0.00390 0.00460 0.01070 0.00590 0.00770 0.00760 0.00600 0.00400 0.00840 0.00690 0.00700 0.00580 0.00710 0.00500 0.00210 0.00970 0.00210 0.00240 0.00780 0.00592 0.00378 0.01070 0.00050 0.00220

0.02410 0.01660 0.02320 0.02080 0.01060 0.01470 0.02450 0.01670 0.01480 0.02580 0.01600 0.00960 0.03590 0.03220 0.03220 0.01610 0.01680 0.02190 0.00410 0.02840 0.00760 0.01050 0.02035 0.01912 0.01103 0.03590 0.00057 0.00760

0.01200 0.02160 0.01450 0.03260 0.01310 0.03160 0.06520 0.02430 0.03590 0.08720 0.03140 0.01940 0.04620 0.04350 0.05370 0.03210 0.03720 0.03110 0.00430 0.06650 0.00340 0.00700 0.01680 0.03401 0.01791 0.08720 0.00012 0.00480

3.10

Ni mg/L 0.00064 0.00120 0.00055 0.00059 0.00110 0.00066 0.00170 0.00050 0.00062 0.00120 0.00160 0.00050 0.00050 0.00050 0.00075 0.00054 0.00250 0.00065 0.00082 0.00090

Zn mg/L 0.0130 0.0156 0.0130 0.0108 0.0112 0.0110 0.0050 0.0084 0.0083 0.0114 0.0162 0.0145 0.0149 0.0145 0.0093 0.0200 0.0278 0.0073 0.0078 0.0126

NH3 mg/L 0.040 0.092 0.040 0.040 0.082 0.120 0.250 0.160 0.110 0.120 0.060 0.062 0.079 0.280 0.059 0.081 0.092 0.066 0.065 0.100

2.45 1.60 2.03 2.38 3.10 1.60 2.45

0.00540 0.00410 0.00390 0.00480 0.00200 0.00310 0.00650 0.00250 0.00350 0.00650 0.00320 0.00098 0.00670 0.00510 0.00700 0.00350 0.00420 0.00310 0.00110 0.00790 0.00190 0.00280 0.00475 0.00401 0.00261 0.00790 0.00050 0.00190

0.1630 0.0899 0.0907 0.1400 0.0660 0.1010 0.1360 0.1050 0.0909 0.1820 0.0929 0.0595 0.2270 0.1640 0.2120 0.0803 0.0893 0.0967 0.0276 0.1650 0.0345 0.0608 0.1265 0.1111 0.0662 0.2270 0.0050 0.0345

0.800 0.910 0.330 0.040 0.080 0.040 0.210 0.380 0.300 0.390 0.140 0.130 0.200 0.970 0.550 0.610 0.290 0.085 0.040 0.250 0.085 0.440 0.855 0.278 0.224 0.970 0.040 0.120

K mg/L 3.10 -

1.0 1.0 1.0 1.0 1.0 1.0 1.1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0

Total P mg/L 0.05 0.12 0.05 0.05 0.05 0.10 0.17 0.05 0.05 0.05 0.05 0.11 0.05 0.05 0.05 0.05 0.16 0.05 0.05 0.07

NO3 mg/L 0.94 1.40 1.00 2.00 0.86 0.92 2.50 0.79 0.15 0.12 0.38 0.10 0.44 0.26 0.40 0.29 0.82 0.36 0.40 0.74

2.5 2.8 1.9 3.0 1.1 1.7 3.1 2.9 2.2 3.3 1.5 1.0 1.1 1.7 1.5 1.0 1.0 1.0 1.0 1.1 1.3 1.8 2.7 1.7 1.4 3.3 1.0 1.0

0.23 0.50 0.31 0.40 0.19 0.05 0.35 0.36 0.28 0.55 0.22 0.14 0.43 0.60 0.48 0.26 0.26 0.16 0.11 1.00 0.05 0.19 0.37 0.32 0.21 1.00 0.05 0.14

1.50 0.39 1.10 0.73 0.53 0.40 0.47 0.24 0.36 0.26 0.43 0.23 0.23 0.85 0.85 0.52 0.43 0.32 0.33 0.16 0.10 0.99 0.95 0.48 0.62 2.50 0.10 0.43

TKN mg/L

NO2 +NO3 NO2 mg/L mg/L 0.95 0.10 1.40 0.10 0.93 1.00 2.00 0.10 0.10 0.87 0.10 0.93 0.10 2.50 0.10 0.79 0.10 0.15 0.10 0.12 0.39 0.10 0.23 0.13 0.44 0.10 0.10 0.27 0.10 0.40 0.30 0.10 0.10 0.82 0.10 0.36 0.10 0.40 0.75 0.15 0.15 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.13 0.10 0.12 1.00 0.10 0.10

761 530 604 816 610 613 328 588 290 588 552 654 620 610 608 612 622 602 652 593

2.6 18.2 2.3 4.0 4.0 4.7 9.0 2.0 2.0 2.3 4.0 2.5 10.6 5.1 11.3 4.0 14.4 2.0 2.0 5.6

TVS mg/L 170.0 140.0 262.0 183.0 173.0 156.0 106.0 194.0 146.0 127.0 164.0 165.5

5,450 206 342 114 110 52 90 66 52 100 82 66 91 83 40 46 94 84 74 557 522 2,828 140 490 5,450 40 432

68.2 84.8 45.2 157.0 52.7 47.9 216.0 90.7 124.0 309.0 95.2 55.8 361.0 204.0 166.0 98.1 114.0 43.4 14.4 282.0 14.4 39.8 76.5 126.5 68.1 361.0 2.0 18.2

244.0 57.0 77.0 108.0 63.0 58.0 80.0 73.0 92.8 139.0 15.5 23.3 46.1 74.6 84.0 27.3 29.8 150.5 66.1 111.2 262.0 15.5 99.4

TSS mg/L

TDS mg/L

1.70 0.41 1.10 0.76 0.54 0.41 0.49 0.33 0.37 0.29 0.46 0.25 0.23 0.89 0.90 0.53 0.45 0.40 0.34 0.19 0.10 1.00 1.06 0.50 0.64 2.50 0.10 0.44

Note: Nitrate (NO3 ), Nitrite (NO2 ), and CBOD values may contain estimated unflagged data

-

Capitol Region Watershed District 2012 Monitoring Report 103

2 2 9 3 4

Hardness mg/L 490.0 456.0 462.0 445.0 429.0 464.0 218.0 426.0 450.0 451.0 472.0 464.0 434.0 457.0 470.0 489.0 507.0 441.0 387.0 442.7

25 25 8 25 2 3

420.0 66.9 157.0 74.9 56.7 41.6 88.1 47.7 40.3 83.2 50.3 34.7 71.4 74.8 80.7 32.2 41.4 54.8 46.1 81.5 384.0 350.0 243.5 94.6 263.2 507.0 32.2 350.0

VSS mg/L

2.0 2.0 2.0 19.1 2.0 2.0 2.0 2.0 2.0 2.0 4.2 11.2 18.8 22.3 3.6 80.1 2.0 2.0 10.1

SO4 mg/L 59.5 52.7 57.6 59.8 58.9 57.9 45.0 56.2 53.8 55.7 55.1 58.0 63.8 63.8 58.7 56.7 62.6 64.1 65.7 58.2

22.5 11.1 13.8 15.6 12.6 6.3 14.1 15.3 17.1 37.4 4.4 4.4 9.9 4.3 16.8 12.9 11.6 80.1 2.0 5.4

59.8 8.6 27.9 8.0 8.5 4.3 8.5 4.8 2.5 6.4 6.3 5.6 6.0 6.1 6.4 2.5 2.6 4.8 4.7 4.0 48.2 42.8 34.2 10.5 33.8 65.7 2.5 45.0

CBOD mg/L

Ca mg/L

Fl mg/L

Mg mg/L

0.1 0.1

120.0 111.0 115.0 115.3

41.9 37.9 41.3 40.4

0.1 0.1 0.1 0.1 0.1 0.1 0.1

23.3 8.6 11.1 14.6 21.0 15.7 53.1 120.0 8.6 22.2

5.5 2.6 3.3 4.4 7.0 4.6 18.0 41.9 2.6 6.3

Actual value less than number (<) Reporting limit halved Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit Not collected

E. coli pH Std. Units mpn/100 mL 46 7.7 8.0 1 9 7.9 7.6 2 14 8.0 8.0 44 24 7.7 34 7.6 46 21 7.6 8.0 39 8.3 15 8.0 179 8.1 36 8.4 28 8.1 84 8.0 26 7.9 8.0 6 6 7.9 7.9 35 7.5 7.1 7.1 6.7 7.0 6.6 7.3 6.9 7.0 6.4 6.6 6.2 6.3 6.4 6.7 7.1 6.9 7.0 6.8 7.9 7.4 7.3 6.9 7.4 8.4 6.2 7.6

8,500 9,700 4,100 93,300 16,900 26,500 5,548 93,300 1 35


Capitol Region Watershed District 2012 Monitoring Report 104


Table 24. 2012 Phalen Creek Loading.

Sample Type Base Grab Snowmelt Base Snowmelt Base Snowmelt Base Other (STORM) Base Snowmelt Grab Base Snowmelt Base Snowmelt Base Snowmelt Base Snowmelt Base Snowmelt Base Other (STORM) Base Snowmelt Base Grab Snowmelt Base Snowmelt Base Storm Base Snowmelt Grab

Sample Collection Time Start Start Date End Date Time 1/4/2012

12:30

1/4/2012

End Time 12:30

1/26/2012

12:30

1/26/2012

12:30

2/8/2012

11:20

2/8/2012

11:20

3/6/2012

15:00

3/6/2012

15:00

TP (mg/L) 0.05 0.37 0.07 0.37 0.07 0.37 0.07 0.32 0.07 0.23 0.07 0.37 0.07 0.37 0.07 0.37 0.07 0.37 0.07 0.37 0.07 0.32 0.07 0.37 0.12 0.37 0.07 0.37 0.07 0.32 0.07 0.50

TSS (mg/L) 2.6 76.50 5.60 76.50 5.60 76.50 5.60 126.5 5.60 68.2 5.60 76.50 5.60 76.50 5.60 76.50 5.60 76.50 5.60 76.50 5.60 126.5 5.60 76.50 18.2 76.50 5.60 76.50 5.60 126.50 5.60 84.8

Loading Interval Start 1/1/12 0:00 1/4/12 13:15 1/4/12 18:45 1/5/12 12:00 1/5/12 21:15 1/6/12 11:15 1/6/12 20:15 1/16/12 0:15 1/16/12 6:00 1/26/12 10:45 1/26/12 22:00 1/27/12 14:15 1/27/12 20:45 1/30/12 13:00 1/30/12 19:45 1/31/12 13:00 2/1/12 0:45 2/1/12 14:15 2/1/12 22:45 2/2/12 13:00 2/2/12 22:30 2/3/12 9:15 2/3/12 16:30 2/6/12 12:00 2/6/12 20:45 2/14/12 12:45 2/14/12 22:00 2/21/12 2:15 2/23/12 23:30 2/28/12 17:45 2/29/12 21:15 3/6/12 11:30

End

Interval Volume (cf)

1/4/12 13:00

1,027,380

1/4/12 18:30 1/5/12 11:45 1/5/12 21:00 1/6/12 11:00 1/6/12 20:00 1/16/12 0:00 1/16/12 5:45 1/26/12 10:30 1/26/12 21:45 1/27/12 14:00 1/27/12 20:30 1/30/12 12:45 1/30/12 19:30 1/31/12 12:45 2/1/12 0:30 2/1/12 14:00 2/1/12 22:30 2/2/12 12:45 2/2/12 22:15 2/3/12 9:00 2/3/12 16:15 2/6/12 11:45 2/6/12 20:30 2/14/12 12:30 2/14/12 21:45 2/21/12 2:00 2/23/12 23:15 2/28/12 17:30 2/29/12 21:00 3/6/12 11:15 3/7/12 22:15

77,612 203,444 133,274 164,307 143,036 2,560,840 80,017 2,826,950 196,690 191,108 89,023 740,396 91,578 201,238 222,871 156,695 116,447 164,274 130,994 122,477 93,636 780,614 107,828 2,041,090 120,944 1,705,850 957,753 1,347,960 1,229,400 1,583,690 765,843

Capitol Region Watershed District 2012 Monitoring Report 105

Interval TP (lb) 3.21 1.79 0.89 3.08 0.72 3.30 11.19 1.60 12.35 2.82 0.84 2.06 3.24 2.12 0.88 5.15 0.68 2.69 0.72 3.03 0.54 1.87 3.41 2.49 15.29 2.79 7.45 22.12 5.89 24.56 6.92 23.90

Interval TSS (lb) 167 371 71 636 57 683 895 632 988 837 67 425 259 437 70 1,064 55 556 57 626 43 739 273 515 2,319 578 596 4,574 471 9,708 554 4,054


Base Grab Storm Base Base Storm Base Storm Base Storm Storm Storm Base Storm Composite Base Storm Composite Base Composite Storm Composite Base Storm Composite Base Storm Composite Base Storm Composite Storm Base Storm Storm Base Grab Storm Base Grab Storm Composite Base Storm Base Storm Base Grab Storm Base

3/19/2012

9:10

3/19/2012

9:10

4/17/2012

23:36

4/18/2012

0:48

4/21/2012 4/23/2012 5/1/2012

21:26 9:30 22:10

4/22/2012 4/24/2012 5/2/2012

0:53 8:41 1:58

5/3/2012

10:36

5/3/2012

12:35

5/4/2012

18:59

5/4/2012

20:43

5/5/2012

14:36

5/5/2012

16:14

5/11/2012

8:50

5/11/2012

8:50

5/22/2012 5/23/2012

9:05 21:06

5/22/2012 5/24/2012

9:05 2:49

6/5/2012

8:45

6/5/2012

8:45

0.05 0.32 0.07 0.07 0.32 0.07 0.32 0.07 0.32 0.32 0.32 0.07 0.40 0.07 0.19 0.05 0.05 0.07 0.35 0.07 0.36 0.07 0.28 0.32 0.07 0.32 0.32 0.05 0.32 0.10 0.55 0.07 0.32 0.07 0.32 0.17 0.32 0.07

2.3 126.50 5.60 5.60 126.50 5.60 126.50 5.60 126.50 126.50 126.50 5.60 157.0 5.60 52.7 4.0 47.9 5.60 216.0 5.60 90.7 5.60 124.0 126.50 5.60 126.50 126.50 4.0 126.50 4.7 309.0 5.60 126.50 5.60 126.50 9.0 126.50 5.60

3/7/12 22:30 3/19/12 20:20 3/23/12 10:20 3/28/12 10:50 3/29/12 23:30 3/31/12 14:50 4/2/12 21:00 4/3/12 3:00 4/15/12 1:40 4/15/12 19:40 4/16/12 0:50 4/16/12 15:20 4/17/12 22:30 4/18/12 10:50 4/21/12 21:10 4/22/12 5:30 5/1/12 21:50 5/2/12 6:30 5/3/12 10:20 5/3/12 15:00 5/4/12 18:50 5/4/12 22:20 5/5/12 14:30 5/6/12 2:20 5/6/12 12:30 5/8/12 12:10 5/8/12 16:20 5/8/12 19:40 5/19/12 19:30 5/19/12 23:00 5/23/12 21:00 5/24/12 23:00 5/26/12 10:20 5/26/12 22:00 5/27/12 23:00 5/28/12 6:00 6/10/12 21:10 6/11/12 5:00

3/19/12 20:10 3/19/12 23:50 3/26/12 15:00 3/29/12 23:20 3/31/12 14:40 4/2/12 20:50 4/3/12 2:50 4/15/12 1:30 4/15/12 19:30 4/16/12 0:40 4/16/12 15:10 4/17/12 22:20 4/18/12 10:40 4/21/12 21:00 4/22/12 5:20 5/1/12 21:40 5/2/12 6:20 5/3/12 10:10 5/3/12 14:50 5/4/12 18:40 5/4/12 22:10 5/5/12 14:20 5/5/12 18:50 5/6/12 12:20 5/8/12 12:00 5/8/12 16:10 5/8/12 19:30 5/19/12 19:20 5/19/12 22:50 5/23/12 20:50 5/24/12 22:50 5/26/12 10:10 5/26/12 21:50 5/27/12 22:50 5/28/12 5:50 6/10/12 21:00 6/11/12 4:50 6/14/12 9:50

Capitol Region Watershed District 2012 Monitoring Report 106

3,251,900 1,876,970 5,307,210 3,835,800 9,740,880 3,968,890 419,288 4,729,730 1,163,313 562,104 642,905 417,194 399,292 1,113,170 429,695 3,390,260 1,066,380 391,291 699,318 398,468 399,144 238,703 1,022,139 1,670,960 678,139 192,043 299,842 4,436,250 644,909 1,711,530 3,657,250 626,252 898,948 327,843 693,890 5,283,470 783,211 1,347,634

10.15 37.50 23.19 16.76 194.59 17.34 8.38 20.67 23.24 11.23 12.84 1.82 9.97 4.86 5.10 10.58 3.33 1.71 15.28 1.74 8.97 1.04 17.87 33.38 2.96 3.84 5.99 13.85 12.88 10.68 125.57 2.74 17.96 1.43 13.86 56.07 15.65 5.89

467 14,822 1,855 1,341 76,923 1,387 3,311 1,653 9,187 4,439 5,077 146 3,913 389 1,414 847 3,189 137 9,430 139 2,260 83 7,912 13,195 237 1,517 2,368 1,108 5,093 502 70,547 219 7,099 115 5,480 2,968 6,185 471


Storm Composite Base Storm Composite Base Storm Base Storm Base Grab Storm Composite Base Storm Composite Base Storm Base Grab Base Composite Storm Composite Storm Composite Base Storm Base Storm Composite Base Storm Composite Base Composite Storm Composite Base Composite Storm Base Composite Base Composite Storm Base Grab Base Composite Storm Composite Base Storm Composite Base Composite Base Grab Base Grab

6:08 16:50 11:50

0.22 0.07 0.14 0.07 0.32 0.07 0.32 0.05 0.43 0.07 0.60 0.07 0.32 0.05 0.05 0.48 0.26 0.07 0.32 0.07 0.16 0.07 0.11 0.05 1.00 0.11 0.32 0.05 0.05 0.32 0.05 0.05 0.05 0.07 0.19 0.16 0.05

95.2 5.60 55.8 5.60 126.50 5.60 126.50 2.0 361.0 5.60 204.0 5.60 126.50 2.0 2.3 166.0 114.0 5.60 126.50 5.60 43.4 5.60 14.4 4.0 282.0 2.5 126.50 10.6 5.1 126.50 11.3 4.0 14.4 5.60 39.8 14.4 2.0

6/14/12 10:00 6/14/12 20:00 6/16/12 9:20 6/16/12 14:30 6/17/12 14:50 6/18/12 5:40 6/19/12 4:30 6/19/12 11:50 7/6/12 19:00 7/7/12 3:40 7/13/12 4:00 7/13/12 9:40 7/13/12 17:30 7/14/12 3:40 7/16/12 9:50 7/18/12 2:40 7/18/12 10:20 7/18/12 16:40 7/21/12 6:40 7/21/12 12:10 7/24/12 5:10 7/24/12 13:30 7/29/12 5:10 7/29/12 13:50 8/3/12 23:30 8/4/12 5:30 8/15/12 8:30 8/15/12 11:50 9/1/12 14:40 9/17/12 3:30 9/17/12 10:30 10/3/12 16:10 10/19/12 4:20 10/19/12 22:00 10/24/12 14:20 10/25/12 19:00 11/14/12 0:10

6/14/12 19:50 6/16/12 9:10 6/16/12 14:20 6/17/12 14:40 6/18/12 5:30 6/19/12 4:20 6/19/12 11:40 7/6/12 18:50 7/7/12 3:30 7/13/12 3:50 7/13/12 9:30 7/13/12 17:20 7/14/12 3:30 7/16/12 9:40 7/18/12 2:30 7/18/12 10:10 7/18/12 16:30 7/21/12 6:30 7/21/12 12:00 7/24/12 5:00 7/24/12 13:20 7/29/12 5:00 7/29/12 13:40 8/3/12 23:20 8/4/12 5:20 8/15/12 8:20 8/15/12 11:40 9/1/12 14:30 9/17/12 3:20 9/17/12 10:20 10/3/12 16:00 10/19/12 4:10 10/19/12 21:50 10/24/12 14:10 10/25/12 18:50 11/11/12 23:50 12/10/12 17:00

1,208,800 672,878 695,894 449,509 1,117,160 428,026 1,104,450 4,790,430 733,050 1,879,810 740,452 117,065 543,307 721,066 524,524 354,806 1,030,710 832,556 1,307,330 873,862 524,075 1,501,200 657,568 1,661,990 761,736 3,459,057 198,445 5,075,530 4,677,490 239,596 4,838,380 4,798,770 311,807 1,467,840 1,248,130 5,638,620 8,100,030

16.60 2.94 6.08 1.96 22.32 1.87 22.06 14.95 19.68 8.21 27.73 0.51 10.85 2.25 1.64 10.63 16.73 3.64 26.12 3.82 5.23 10.31 2.05 5.19 47.55 23.75 3.96 15.84 14.60 4.79 15.10 14.98 0.97 6.41 14.80 56.32 25.28

7,184 235 2,424 157 8,822 150 8,722 598 16,520 657 9,430 41 4,290 90 75 3,677 7,335 291 10,324 305 1,420 1,349 164 415 13,410 540 1,567 3,359 1,489 1,892 3,413 1,198 280 513 3,101 5,069 1,011

11:50

0.05

2.0

12/10/12 17:15

12/31/12 23:45

7,129,360

22.25

890

6/14/2012

10:13

6/14/2012

13:46

6/16/2012

9:33

6/16/2012

12:34

6/22/2012 7/6/2012

11:10 19:04

6/22/2012 7/7/2012

11:10 0:33

7/13/2012

4:17

7/13/2012

7:21

7/16/2012 7/16/2012 7/18/2012 7/18/2012

9:30 9:51 2:45 10:27

7/16/2012 7/17/2012 7/18/2012 7/18/2012

9:30 8:41 3:39 11:53

7/24/2012

6:10

7/24/2012

11:19

7/29/2012 7/31/2012 8/3/2012 8/13/2012

5:48 11:25 23:43 10:24

7/29/2012 8/1/2012 8/4/2012 8/13/2012

9:53 8:42 2:10 21:29

8/27/2012 9/10/2012

10:29 11:39

8/27/2012 9/10/2012

12:55 17:20

9/26/2012 10/10/2012 10/19/2012

14:10 11:41 6:25

9/26/2012 10/11/2012 10/19/2012

14:10 9:26 15:41

10/24/2012 10/30/2012 11/29/2012

15:33 10:16 11:50

10/25/2012 10/30/2012 11/29/2012

12/21/2012

11:50

12/21/2012

Capitol Region Watershed District 2012 Monitoring Report 107


Snowmelt Flow-Weighted Average Storm Flow-Weighted Average Base Flow-Weighted Average Total Flow-Weighted Average

0.39 0.33 0.07 0.15

78.0 141.1 5.9 42.0

Snowmelt Subtotal Storm Subtotal Base Subtotal Total

Note: Italics indicate estimated concentrations based on average base and storm flow concentrations

Capitol Region Watershed District 2012 Monitoring Report 108

3,153,892 41,442,850 116,910,040 161,506,783

77.34 863.60 529.55 1,470.50

15,357 365,001 42,855 423,213


Appendix A.4

St. Anthony Park Subwatershed

The St. Anthony Park subwatershed has a drainage area of 3,418 acres and is the western-most subwatershed monitored by CRWD (Figure 40). CRWD monitors the storm sewer outlet of the St. Anthony Park subwatershed where it directly flows into the Mississippi River at Desnoyer Park in St. Paul. The subwatershed is primarily comprised of industrial and residential land uses with 48% impervious surface land coverage. CRWD also monitors a 929 acre upland subwatershed of St. Anthony Park called Sarita. The Sarita subwatershed is monitored in a storm sewer at the outlet of the Sarita Wetland near Como Avenue (Figure 40). The Sarita subwatershed has substantially different land use than any other CRWD subwatershed because it encompasses the Minnesota State Fair Grounds and the University of Minnesota St. Paul Campus where open space dominates. The predominant land use within the Sarita subwatershed is institutional with 16% impervious surface coverage.

St. Anthony Park Outlet

Sarita Outlet

Capitol Region Watershed District 2012 Monitoring Report 109


Figure 40. Sampling Sites in the St. Anthony Park Subwatershed. Capitol Region Watershed District 2012 Monitoring Report 110


Table 25. 2005-2012 St. Anthony Park Monitoring Results. Subwatershed Area (ac) Total Rainfall (inches) Number of Monitoring Days Number of Storm Sampling Events Number of Storm Intervals Number of Base Sampling Events Number of Baseflow Intervals Total Discharge (cf) Storm Flow Subtotal (cf) Baseflow Subtotal (cf) Average TSS Concentration (mg/L) Total FWA TSS Concentration (mg/L) Storm FWA TSS Concentration (mg/L) Base FWA TSS Concentration (mg/L) Total TSS Loading (lbs) Storm TSS Loading (lbs) Base TSS Loading (lbs) Total TSS Yield (lb/ac) Normalized Total TSS Yield (lb/ac/in runoff) Average TP Concentration (mg/L) Total FWA TP Concentration (mg/L) Storm FWA TP Concentration (mg/L) Base FWA TP Concentration (mg/L) Total TP Loading (lbs) Storm TP Loading (lbs) Base TP Loading (lbs) Total TP Yield (lb/ac) Normalized Total TP Yield (lb/ac/in runoff)

2005 3,418 28.27 191 44 9 3 28 191,591,247 65,769,117 119,056,352 124 66 146 21 787,976 599,259 153,661 231 15 0.222 0.167 0.229 0.137 1999 942 1022 0.585 0.038

2006 3,418 24.13 192 21 23 7 23 145,671,734 49,091,775 96,579,959 108 62 152 16 564,202 465,259 98,943 165 14 0.220 0.140 0.270 0.080 1,307 820 487 0.380 0.033

2007 3,418 23.99 215 19 33 11 32 209,782,937 60,484,181 149,298,756 145 72 205 18 941,282 774,686 166,595 275 16 0.210 0.130 0.270 0.070 1,668 1,031 636 0.488 0.029

2008 3,418 9.95 126 12 24 12 25 57,793,346 19,865,767 37,927,579 129 92 247 10 330,829 306,571 24,258 97 21 0.211 0.155 0.327 0.065 561 406 155 0.164 0.035

2009 3,418 18.72 218 25 38 16 24 99,163,464 41,313,601 57,849,863 138 95 176 38 589,228 453,744 135,484 172 22 0.226 0.173 0.286 0.092 1,070 738 332 0.313 0.039

Capitol Region Watershed District 2012 Monitoring Report 111

2010 3,418 26.84 188 17 44 9 41 117,851,525 57,480,844 60,370,681 149 123 238 13 904,150 853,968 50,182 250 28 0.215 0.178 0.304 0.059 1,313 1,091 222 0.384 0.040

2011 2012 3,418 3,418 29.24 29.71 269 334 7 5 17 30 19 14 28 33 115,056,718 103,140,522 26,284,149 37,566,038 88,572,569 62,373,370 89 75 73 63 214 71 31 53 524,922 408,192 353,893 165,371 171,030 206,376 154 136 17 14 0.190 0.133 0.131 0.134 0.261 0.188 0.093 0.101 944 867 431 440 513 396 0.276 0.254 0.030 0.031


Figure 41. 2012 St. Anthony Park Level, Discharge, and Rainfall. Capitol Region Watershed District 2012 Monitoring Report 112


Table 26. 2012 St. Anthony Park Laboratory Data. St. Anthony Park Sample Type Illicit Discharge Grab

Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Grab Base Grab Base Grab

Snowmelt Grab Snowmelt Grab Storm Grab Storm Grab Storm Grab Storm Grab Storm Grab Storm Grab

Ni mg/L 0.0675 0.0675

Zn mg/L 0.1970 0.1970

NH3 mg/L 0.34 0.34

2.9

0.0278 0.0276 0.0029 0.0017 0.0028 0.0040 0.0056 0.0028 0.0062 0.0067 0.0934 0.0892 0.0998 0.1080 0.0762 0.1290 0.0823 0.0451

0.0231 0.0209 0.0055 0.0050 0.0070 0.0050 0.0050 0.0050 0.0099 0.0086 0.1860 0.0973 0.1140 0.1270 0.1240 0.1410 0.0521 0.0551

3.7 4.5 2.9 3.7

0.0668 0.0372 0.0030 0.0029 0.0086 0.0023 0.0137 0.0520 0.0061 0.0387 0.1290 0.0017 0.0137

0.1190 0.0436 0.0491 0.0088 0.0984 0.0194 0.2050 0.0813 0.0761 0.0671 0.2050 0.0050 0.0436

Sampling Start Date/Time 11/05/2012 10:15

Sampling End Date/Time 11/05/2012 10:15 ID Average

Ortho-P mg/L 0.010 0.010

Cl mg/L 194.0 194.0

Cd mg/L 0.000510 0.000510

Cr mg/L 0.01560 0.01560

Cu mg/L 0.0639 0.0639

Pb mg/L 0.01080 0.01080

01/04/2012 08:40 02/08/2012 09:00 04/24/2012 08:25 05/10/2012 08:30 05/22/2012 08:15 06/04/2012 08:25 06/22/2012 08:10 07/02/2012 08:21 07/16/2012 08:30 07/16/2012 10:39 07/31/2012 08:45 08/13/2012 08:36 08/13/2012 08:55 08/27/2012 08:45 08/27/2012 09:36 09/10/2012 08:30 09/10/2012 08:47 09/24/2012 08:30 09/24/2012 16:16 10/10/2012 08:30 10/10/2012 08:46 10/30/2012 08:25 10/31/2012 08:25 11/29/2012 08:35 12/21/2012 08:40

01/04/2012 08:40 02/08/2012 09:00 04/24/2012 08:25 05/10/2012 08:30 05/22/2012 08:15 06/04/2012 08:25 06/22/2012 08:10 07/02/2012 08:21 07/16/2012 08:30 07/16/2012 10:39 07/31/2012 08:45 08/13/2012 08:36 08/13/2012 08:55 08/27/2012 08:45 08/28/2012 08:20 09/10/2012 08:30 09/11/2012 07:46 09/24/2012 08:30 09/25/2012 05:01 10/10/2012 08:30 10/11/2012 00:16 10/30/2012 08:25 10/31/2012 08:25 11/29/2012 08:35 12/21/2012 08:40 Base Average

0.010 0.010 0.030 0.010 0.047 0.049 0.050 0.064 0.039 0.022 0.110 0.010 0.010 0.010 0.010 0.010 0.010 0.029

227.0 200.0 51.7 32.1 32.2 46.3 32.3 18.4 32.3 28.1 211.0 216.0 218.0 209.0 172.0 210.0 248.0 128.5

0.000120 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000450 0.000250 0.000340 0.000320 0.000320 0.000440 0.000370 0.000196

0.00490 0.00390 0.00160 0.00082 0.00096 0.00110 0.00120 0.00180 0.00100 0.00190 0.05680 0.01940 0.01830 0.01930 0.01640 0.01190 0.01000 0.01008

0.0081 0.0082 0.0021 0.0019 0.0030 0.0020 0.0029 0.0014 0.0029 0.0029 0.0808 0.0320 0.0294 0.0317 0.0232 0.0206 0.0185 0.0160

0.00056 0.00430 0.00110 0.00043 0.00072 0.00054 0.00047 0.00043 0.00058 0.00047 0.00780 0.00360 0.00330 0.00430 0.00270 0.00230 0.00300 0.00215

2.9 -

01/26/2012 10:20 03/05/2012 13:30 05/24/2012 08:05 06/14/2012 09:55 07/18/2012 10:50 07/24/2012 08:30 08/15/2012 08:45 10/25/2012 09:30 Snowmelt Average Storm Average Annual Average Annual Maximum Annual Minimum Annual Median

0.010 0.061 0.022 0.028 0.048 0.050 0.120 0.036 0.054 0.034 0.120 0.010 0.022

397.0 207.0 15.7 37.2 8.0 12.1 10.0 302.0 16.6 122.6 397.0 8.0 51.7

0.000190 0.000082 0.000120 0.000080 0.000280 0.000130 0.000340 0.000136 0.000190 0.000202 0.000510 0.000080 0.000120

0.01600 0.00480 0.00550 0.00089 0.00700 0.00180 0.01270 0.01040 0.00558 0.00942 0.05680 0.00082 0.00490

0.0252 0.0076 0.0103 0.0022 0.0157 0.0041 0.0477 0.0164 0.0160 0.0179 0.0808 0.0014 0.0082

0.03200 0.01380 0.00820 0.00060 0.02020 0.00260 0.02110 0.02290 0.01054 0.00584 0.03200 0.00043 0.00270

01/26/2012 10:20 03/05/2012 13:30 05/24/2012 08:05 06/14/2012 09:55 07/18/2012 10:50 07/24/2012 08:30 08/15/2012 08:45 10/25/2012 09:30

K mg/L 4.5 4.5

TKN mg/L 1.0 1.0

Total P mg/L 0.16 0.16

NO3 mg/L 0.50 0.50

0.23 0.26 0.20 0.11 0.12 0.22 0.32 0.13 0.09 0.08 0.50 0.40 0.41 0.42 0.42 0.53 0.46 0.29

1.0 1.0 1.3 1.0 1.1 1.0 1.0 1.0 1.0 1.0 1.3 1.4 1.1 1.3 1.0 1.1 1.0 1.1

0.05 0.10 0.10 0.12 0.15 0.12 0.13 0.14 0.12 0.12 0.05 0.11 0.05 0.20 0.15 0.05 0.05 0.11

0.96 1.10 1.60 0.56 1.10 0.80 0.62 0.37 0.36 0.31 0.28 0.21 0.22 0.28 0.41 0.32 0.22 0.57

0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

0.48 0.32 0.32 0.13 0.55 0.12 0.47 0.40 0.32 0.31 0.55 0.08 0.32

1.0 1.0 1.0 1.5 1.0 1.0 1.2 1.0 1.1 1.1 1.5 1.0 1.0

0.32 0.05 0.14 0.13 0.24 0.16 0.32 0.19 0.20 0.13 0.32 0.05 0.12

1.10 0.76 0.22 0.65 0.37 0.41 0.40 0.93 0.41 0.57 1.60 0.21 0.41

0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

NO2 mg/L

NO2 +NO3 mg/L 0.1 0.55 0.1 0.55

TDS mg/L 787 787

TSS mg/L 230.0 230.0

0.97 1.10 1.60 0.57 1.10 0.82 0.62 0.38 0.36 0.31 0.30 0.25 0.26 0.30 0.43 0.33 0.23 0.58

757 720 317 262 234 270 210 95 236 250 844 840 849 827 1,030 882 882 559

1.10 0.77 0.24 0.65 0.39 0.42 0.43 0.94 0.43 0.58 1.60 0.23 0.43

1,140 692 68 292 57 156 90 916 133 511 1,140 57 317

Note: Nitrate (NO3 ), Nitrite (NO2 ), and CBOD values may contain estimated unflagged data

-

Capitol Region Watershed District 2012 Monitoring Report 113

TVS mg/L

VSS mg/L -

23 23

Hardness mg/L 409.0 409.0

15.1 61.2 17.6 15.1 21.0 26.5 19.8 16.1 17.3 11.6 279.0 96.6 95.8 111.0 87.8 87.8 74.6 48.4

212.0 214.0 119.0 73.4 77.0 89.4 97.4 74.7 248.0 249.0 145.4

19 32 11 12 19

531.0 534.0 179.0 200.0 164.0 188.0 175.0 138.0 178.0 180.0 481.0 530.0 548.0 554.0 447.0 524.0 503.0 356.1

2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 4.4 9.0 4.6 80.6 79.0 4.7 2.0 12.0

109.0 109.0 29.2 21.4 17.8 21.6 22.9 4.4 20.2 23.2 217.0 227.0 224.0 219.0 203.0 248.0 230.0 114.5

338.0 88.0 56.6 22.2 127.0 20.1 149.0 213.0 75.0 75.2 338.0 11.6 61.2

200.0 191.0 45.0 53.2 65.7 54.7 195.5 54.7 129.0 249.0 45.0 93.4

19 32 11 19

467.0 478.0 35.0 179.0 51.2 102.0 60.6 472.5 85.6 313.4 554.0 35.0 200.0

3.9 2.0 4.3 2.0 4.1 2.0 18.0 3.0 6.1 9.8 80.6 2.0 2.0

176.0 129.0 2.5 20.6 2.5 4.5 6.2 152.5 7.3 100.0 248.0 2.5 29.2

Actual value less than number (<) Reporting limit halved Actual value greater than number (>) Not collected

CBOD mg/L 5.2 5.2

SO4 mg/L 212.0 212.0

Fl mg/L 0.56 0.56

Ca mg/L

Mg mg/L

pH E. coli Std. Units mpn/100 mL 7.3 7.3 -

-

-

0.12 0.12

46.4 129.0 139.0 104.8

15.1 38.9 44.6 32.9

7.8 8.0 7.8 8.1 7.8 7.6 7.6 7.7 8.0 8.0 7.6 7.4 7.6 7.4 7.5 6.9 7.0 7.6

127 17 56 52 285 68 192 41 48 21 28 38 30 24 1,197 46 32 9 128

0.34 0.56 0.12 0.34

13.6 16.7 15.2 68.9 139.0 13.6 46.4

4.2 4.6 4.4 21.5 44.6 4.2 15.1

7.4 7.6 7.1 7.8 6.8 7.6 6.3 7.5 7.1 7.5 8.1 6.3 7.6

3,000 411 2,203 33,100 27,200 13,183 2,966 33,100 9 52


Capitol Region Watershed District 2012 Monitoring Report 114


Table 27. 2012 St. Anthony Park Loading.

Sample Type

Sample Collection Time Start Start Date End Date Time

End Time

TP (mg/L)

Base Grab

1/4/2012

8:40

1/4/2012

8:40

0.05

Snowmelt Grab Base Grab Storm Base Snowmelt Grab Base Storm Base Storm Storm Base Storm Base Storm Base Storm Base Storm Base Storm Storm Base Grab Storm Base Grab Storm Grab Base Storm Storm Storm Storm Grab Base Storm Base

1/26/2012 2/8/2012

10:20 9:00

1/26/2012 2/8/2012

10:20 9:00

3/5/2012

13:30

3/5/2012

13:30

5/10/2012

8:30

5/10/2012

8:30

5/22/2012 5/24/2012

8:15 8:05

5/22/2012 5/24/2012

8:15 8:05

6/14/2012

9:55

6/14/2012

9:55

0.32 0.10 0.20 0.11 0.05 0.11 0.20 0.11 0.20 0.20 0.11 0.20 0.11 0.20 0.11 0.20 0.11 0.20 0.11 0.20 0.20 0.10 0.20 0.12 0.14 0.11 0.20 0.20 0.20 0.13 0.11 0.20 0.11

TSS (mg/L) 15 338 61 75 48 88 48 75 48 75 75 48 75 48 75 48 75 48 75 48 75 75 18 75 15 57 48 75 75 75 22 48 75 48

Loading Interval Start 1/4/2012 8:45 1/25/2012 6:45 1/26/2012 20:45 2/28/2012 19:30 3/3/2012 9:45 3/5/2012 8:45 3/8/2012 5:45 4/2/2012 22:30 4/3/2012 5:15 4/15/2012 0:45 4/15/2012 18:30 4/16/2012 16:00 4/17/2012 21:45 4/18/2012 10:30 5/1/2012 21:00 5/2/2012 4:15 5/3/2012 8:45 5/3/2012 14:00 5/4/2012 17:00 5/4/2012 23:00 5/5/2012 13:30 5/6/2012 1:15 5/6/2012 10:15 5/19/2012 17:30 5/19/2012 22:30 5/23/2012 19:45 5/24/2012 19:30 5/26/2012 9:15 5/27/2012 18:15 6/10/2012 20:00 6/14/2012 8:30 6/14/2012 19:30 6/16/2012 8:30 6/16/2012 16:30

End

Interval Volume (cf)

1/25/2012 6:30

4,571,060

1/26/2012 20:30 2/28/2012 19:15 3/3/2012 9:30 3/5/2012 8:30 3/8/2012 5:30 4/2/2012 22:15 4/3/2012 5:00 4/15/2012 0:30 4/15/2012 18:15 4/16/2012 15:45 4/17/2012 21:30 4/18/2012 10:15 5/1/2012 20:45 5/2/2012 4:00 5/3/2012 8:30 5/3/2012 13:45 5/4/2012 16:45 5/4/2012 22:45 5/5/2012 13:15 5/6/2012 1:00 5/6/2012 10:00 5/19/2012 17:15 5/19/2012 22:15 5/23/2012 19:30 5/24/2012 19:15 5/26/2012 9:00 5/26/2012 12:30 5/28/2012 7:00 6/11/2012 2:30 6/14/2012 19:15 6/16/2012 8:15 6/16/2012 16:15 6/17/2012 22:00

440,582 7,046,620 3,377,780 490,443 1,238,580 7,679,230 258,327 2,181,910 1,309,660 1,000,350 285,143 571,289 3,913,910 804,969 375,373 1,320,000 515,275 358,245 166,139 851,185 2,443,540 4,418,380 1,088,440 1,361,860 6,974,630 1,151,170 839,725 1,859,370 712,691 1,707,900 556,945 497,244 465,606

Capitol Region Watershed District 2012 Monitoring Report 115

Interval TP (lb) 14.27 8.80 43.99 42.17 3.37 3.87 52.73 3.23 14.98 16.35 12.49 1.96 7.13 26.88 10.05 2.58 16.48 3.54 4.47 1.14 10.63 30.51 27.58 13.59 10.20 60.96 7.90 10.48 23.21 8.90 13.86 3.82 6.21 3.20

Interval TSS (lb) 4309 9296 26921 15815 1482 6804 23202 1209 6592 6132 4684 862 2675 11826 3769 1134 6180 1557 1677 502 3985 11441 4854 5096 1284 24644 3478 3932 8705 3337 2367 1683 2328 1407


Storm Base Storm Storm Storm Storm Base Storm Base Grab Storm Storm Grab Base Storm Base Storm Grab Base Storm Base Grab Storm Base Grab Storm Grab Base Base Composite Base Base Composite Base Composite Base Composite Base Grab Illicit Discharge Grab Base Base Grab Snowmelt Base Grab

0.20 0.11 0.20 0.20 0.20 0.20 0.11 0.20 0.14 0.20 0.24 0.11 0.20

75 48 75 75 75 75 48 75 16 75 127 48 75

0.16 0.11 0.20 0.12 0.20 0.12 0.32 0.11 0.05 0.11 0.11 0.05 0.20 0.15 0.16 0.11 0.05 0.19 0.05

20 48 75 17 75 12 149 48 279 48 97 96 111 88 230 48 88 213 75

Snowmelt Flow-Weighted Average Storm Flow-Weighted Average Base Flow-Weighted Average

0.15 0.19 0.10

Total Flow-Weighted Average

0.13

7/16/2012

10:39

7/16/2012

10:39

7/18/2012

10:50

7/18/2012

10:50

7/24/2012

8:30

7/24/2012

8:30

7/31/2012

8:45

7/31/2012

8:45

8/13/2012 8/15/2012

8:55 8:45

8/13/2012 8/15/2012

8:55 8:45

8/27/2012

9:36

8/27/2012

9:36

9/10/2012 9/24/2012 10/10/2012 10/31/2012 11/5/2012

8:47 16:16 8:46 8:25 10:15

9/11/2012 9/25/2012 10/11/2012 10/31/2012 11/5/2012

7:46 5:01 0:16 8:25 10:15

11/29/2012

8:35

11/29/2012

8:35

12/21/2012

8:40

12/21/2012

8:40

6/17/2012 22:15 6/18/2012 6:30 6/19/2012 3:00 7/3/2012 0:30 7/6/2012 17:30 7/6/2012 22:00 7/13/2012 2:30 7/13/2012 16:00 7/13/2012 21:30 7/18/2012 1:15 7/18/2012 9:00 7/18/2012 14:45 7/21/2012 5:30 7/21/2012 14:45 7/24/2012 4:15 7/24/2012 13:30 7/29/2012 3:45 7/29/2012 16:45 8/3/2012 22:00 8/4/2012 10:15 8/15/2012 6:45 8/15/2012 14:45 8/27/2012 9:30 8/28/2012 8:45 9/2/2012 14:15 9/20/2012 10:30 10/2/2012 20:30 10/22/2012 6:30 11/5/2012 0:15 11/5/2012 15:15 11/29/2012 8:30 12/15/2012 1:00 12/16/2012 19:15

6/18/2012 6:15 6/19/2012 2:45 6/19/2012 11:15 7/3/2012 2:30 7/6/2012 21:45 7/7/2012 3:15 7/13/2012 15:45 7/13/2012 21:15 7/18/2012 1:00 7/18/2012 8:45 7/18/2012 14:30 7/21/2012 5:15 7/21/2012 14:30 7/24/2012 4:00 7/24/2012 13:15 7/29/2012 3:30 7/29/2012 16:30 8/3/2012 21:45 8/4/2012 10:00 8/15/2012 6:30 8/15/2012 14:30 8/27/2012 9:15 8/28/2012 8:30 9/2/2012 14:00 9/14/2012 9:15 10/2/2012 20:15 10/22/2012 6:15 11/5/2012 0:00 11/5/2012 15:00 11/7/2012 15:30 12/15/2012 0:45 12/16/2012 19:00 12/31/2012 23:45

1,135,090 263,161 1,024,150 134,900 550,719 1,259,640 541,383 664,177 1,538,220 681,965 1,339,850 813,326 1,573,910 677,484 1,065,390 1,137,530 840,434 1,187,950 794,166 1,704,960 526,302 1,679,750 164,810 771,961 1,699,040 1,281,840 3,329,390 2,329,610 101,222 610,952 2,748,410 1,420,730 4,714,530

14.17 1.81 12.79 1.68 6.88 15.73 3.72 8.29 13.44 8.51 20.07 5.59 19.65 0.00 10.64 7.81 10.49 8.90 9.92 12.77 10.51 11.53 0.51 5.30 11.67 4.00 41.57 21.81 1.01 4.20 8.58 16.85 14.72

5314 795 4795 632 2578 5898 1636 3110 1546 3193 10622 2457 7369 0 1337 3437 3935 1283 3718 1235 4895 5075 2870 2332 10246 7666 23070 12769 1453 1846 15064 18891 21956

181 71 53

Snowmelt Subtotal Storm Subtotal Base Subtotal

3,099,892 37,566,038 62,373,371

29.52 440.06 396

34992 165371 206,376

63

Total

103,140,523

866.66

408192

Note: Italics indicate estimated concentrations based on average base, snowmelt and storm flow concentrations.

Capitol Region Watershed District 2012 Monitoring Report 116


Table 28. 2006-2012 Sarita Outlet Monitoring Results.

Subwatershed Area (ac) Total Rainfall (inches) Number of Monitoring Days Number of Storm Sampling Events Number of Storm Intervals Total Discharge (cf) Storm Flow Subtotal (cf) Average TSS Concentration (mg/L) Total FWA TSS Concentration (mg/L) Storm FWA TSS Concentration (mg/L) Total TSS Loading (lbs) Storm TSS Loading (lbs) Total TSS Yield (lb/ac) Normalized Total TSS Yield (lb/ac/in runoff) Average TP Concentration (mg/L) Total FWA TP Concentration (mg/L) Storm FWA TP Concentration (mg/L) Total TP Loading (lbs) Storm TP Loading (lbs) Total TP Yield (lb/ac) Normalized Total TP Yield (lb/ac/in runoff)

2006 929 18.19 159 7 19 4,722,303 4,722,303 186 90 90 26,516 26,516 29 20 0.360 0.340 0.340 102 102 0.110 0.078

2007 929 23.19 227 17 33 5,364,747 5,364,747 79 99 99 33,176 33,176 36 22 0.260 0.292 0.290 98 98 0.105 0.066

2008 929 17.64 211 13 23 2,501,022 2,484,855 82 102 102 15,862 15,780 17 23 0.270 0.287 0.288 45 45 0.049 0.066

2009 929 18.72 213 13 18 2,028,779 2,024,843 48 44 44 5,553 5,541 6 10 0.212 0.203 0.203 26 26 0.028 0.047

Capitol Region Watershed District 2012 Monitoring Report 117

2010 929 30.62 205 11 30 5,052,244 5,052,244 85 143 143 45,191 45,191 49 32 0.234 0.246 0.246 77 77 0.083 0.055

2011 929 28.90 203 6 28 6,490,307 6,490,307 53 70 70 28,530 28,530 31 16 0.173 0.200 0.200 81 81 0.087 0.045

2012 929 26.16 228 17 33 6,249,725 6,249,725 81 91 91 35,652 35,652 38 21 0.238 0.252 0.252 98 98 0.106 0.057


Figure 42. 2012 Sarita Outlet Level, Discharge, and Rainfall. Capitol Region Watershed District 2012 Monitoring Report 118


Table 29. 2012 Sarita Outlet Laboratory Data. Sarita Sample Type Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite

Sampling Start Date/Time 04/15/2012 04:01 05/02/2012 00:46 05/03/2012 10:31 05/06/2012 03:01 05/21/2012 10:01 05/23/2012 22:18 05/24/2012 07:38 06/10/2012 23:16 06/14/2012 10:23 06/14/2012 10:31 06/16/2012 10:31 06/17/2012 23:46 07/06/2012 23:16 07/18/2012 02:45 07/18/2012 10:31 07/24/2012 08:00 07/24/2012 06:06 07/29/2012 06:15 08/04/2012 00:01 10/25/2012 08:30 10/25/2012 05:46

Sampling End Date/Time 04/15/2012 05:46 05/02/2012 02:37 05/03/2012 11:51 05/06/2012 04:18 05/21/2012 10:23 05/23/2012 23:22 05/24/2012 07:38 06/11/2012 03:30 06/14/2012 10:23 06/14/2012 10:49 06/16/2012 14:01 06/18/2012 00:54 07/07/2012 01:47 07/18/2012 06:00 07/18/2012 11:49 07/24/2012 08:00 07/24/2012 10:31 07/29/2012 11:32 08/04/2012 13:30 10/25/2012 08:30 10/25/2012 18:45 Storm Average Annual Average Annual Maximum Annual Minimum Annual Median

Ortho-P mg/L 0.023 0.045 0.230 0.070 0.064 0.036 0.042 0.030 0.010 0.037 0.031 0.029 0.036 0.170 0.061 0.061 0.230 0.010 0.037

Cl mg/L 5.1 2.2 2.0 2.0 8.6 2.0 5.8 2.1 2.0 2.5 3.9 2.0 2.0 2.1 2.4 5.7 3.3 3.3 8.6 2.0 2.2

Cd mg/L 0.000080 0.000095 0.000230 0.000100 0.000080 0.000080 0.000080 0.000300 0.000080 0.000110 0.000150 0.000096 0.000200 0.000080 0.000080 0.000110 0.000110 0.000121 0.000121 0.000300 0.000080 0.000096

Cr mg/L 0.00230 0.00230 0.00890 0.00450 0.00160 0.00220 0.00089 0.01190 0.00350 0.00390 0.00300 0.00150 0.00510 0.00150 0.00130 0.00140 0.00180 0.00339 0.00339 0.01190 0.00089 0.00230

Cu mg/L 0.0060 0.0063 0.0161 0.0077 0.0044 0.0059 0.0039 0.0198 0.0038 0.0078 0.0089 0.0066 0.0103 0.0053 0.0036 0.0052 0.0054 0.0075 0.0075 0.0198 0.0036 0.0060

Pb mg/L 0.0081 0.0058 0.0236 0.0094 0.0030 0.0067 0.0018 0.0305 0.0027 0.0117 0.0089 0.0061 0.0123 0.0038 0.0014 0.0030 0.0065 0.0085 0.0085 0.0305 0.0014 0.0065

K mg/L 2.34 2.01 1.69 1.83 1.97 1.97 2.34 1.69 1.92

Ni mg/L 0.00170 0.00200 0.00650 0.00360 0.00190 0.00230 0.00051 0.00880 0.00064 0.00220 0.00290 0.00230 0.00430 0.00180 0.00078 0.00180 0.00170 0.00269 0.00269 0.00880 0.00051 0.00200

Zn mg/L 0.0404 0.0400 0.0923 0.0511 0.0298 0.0452 0.0252 0.1130 0.0226 0.0426 0.0499 0.0360 0.0607 0.0303 0.0190 0.0314 0.0314 0.0448 0.0448 0.1130 0.0190 0.0400

NH3 mg/L 0.20 0.30 0.30 0.45 1.10 0.61 0.36 0.32 0.34 0.53 0.53 0.54 0.35 0.13 0.07 0.27 0.16 0.39 0.39 1.10 0.07 0.34

TKN mg/L 1.0 1.0 1.9 2.0 2.5 1.5 1.4 2.8 1.0 2.2 1.0 1.2 1.0 1.0 1.0 1.0 1.4 1.5 1.5 2.8 1.0 1.2

Total P mg/L 0.15 0.05 0.32 0.27 0.41 0.27 0.20 0.36 0.15 0.20 0.29 0.26 0.32 0.17 0.19 0.17 0.26 0.24 0.24 0.41 0.05 0.26

NO3 mg/L 0.23 0.32 0.30 1.20 0.10 0.36 0.47 0.42 0.37 0.41 0.79 0.38 0.29 0.39 0.36 0.33 0.42 0.42 1.20 0.10 0.37

NO2 mg/L 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

NO2 +NO3 mg/L 0.24 0.34 0.32 1.20 0.10 0.40 0.51 0.46 0.38 0.46 0.82 0.40 0.32 0.42 0.39 0.35 0.44 0.44 1.20 0.10 0.40

TDS mg/L 48 42 44 32 84 48 72 68 42 56 68 41 64 56 36 54 82 55 55 84 32 54

Note: Nitrate (NO3 ), Nitrite (NO2 ), and CBOD values may contain estimated unflagged data -

Capitol Region Watershed District 2012 Monitoring Report 119

TSS mg/L 33.2 38.8 167.0 68.7 19.2 66.0 30.9 539.0 18.4 94.4 67.1 36.5 112.0 24.2 8.0 20.1 36.0 81.1 81.1 539.0 8.0 36.5

TVS mg/L 31.0 21.0 56.0 39.0 61.0 50.0 78.0 15.6 52.3 32.8 62.9 45.0 16.2 15.4 41.2 41.2 78.0 15.4 42.0

VSS mg/L

Actual number less than value (<) Reporting limit halved Not collected

7 7 7 7 7 7

Hardness mg/L 31.8 32.0 58.1 36.1 54.1 34.8 29.0 88.9 27.2 44.1 41.4 35.6 48.6 30.1 24.2 36.4 39.3 40.7 40.7 88.9 24.2 36.1

CBOD mg/L 4.1 5.5 4.5 8.3 3.3 4.0 4.4 3.2 3.3 76.1 11.7 11.7 76.1 3.2 4.3

SO4 mg/L

Fl mg/L 2.5 2.5 2.5 2.5 2.5 2.5 2.5 3.1 2.5 2.5 2.7 2.5 2.5 2.5 2.5 2.5 2.6 2.6 3.1 2.5 2.5

Ca mg/L 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

10.9 13.2 9.4 11.2 11.2 11.2 13.2 9.4 11.1

Mg mg/L 2.1 3.8 1.6 2.1 2.4 2.4 3.8 1.6 2.1

pH E. coli Std. Units mpn/100 mL 6.6 6.6 7.8 7.1 7.1 6.5 75,400 6.6 14,800 7.0 6.3 6.7 6.6 6.3 7.3 3,100 7.0 7.1 7.1 204,600 7.1 6.9 74,475 6.9 74,475 204,600 7.8 6.3 3,100 7.0 45,100


Capitol Region Watershed District 2012 Monitoring Report 120


Table 30. 2012 Sarita Outlet Loading.

Sample Type Storm Composite Storm Composite Storm Composite Storm Storm Storm Composite Storm Storm Composite Storm Composite Storm Storm Storm Storm Storm Composite Storm Composite Storm Composite Storm Composite Storm Storm Storm Composite Storm Storm Storm Composite Storm Composite Storm Storm Storm Composite Storm Composite Storm Composite Storm Storm Storm Composite Storm

Sample Collection Time Start Start Date End Date Time

End Time

TP (mg/L)

TSS (mg/L)

4/15/2012

4:01

4/15/2012

5:46

0.150

33.2

5/2/2012 5/3/2012

0:46 10:31

5/2/2012 5/3/2012

2:37 11:51

5/6/2012

3:01

5/6/2012

4:18

5/21/2012 5/23/2012

10:01 22:18

5/21/2012 5/23/2012

10:23 23:22

6/10/2012 6/14/2012 6/16/2012 6/17/2012

23:16 10:31 10:31 23:48

6/11/2012 6/14/2012 6/16/2012 6/18/2012

3:30 10:49 14:01 0:54

7/6/2012

23:16

7/7/2012

1:47

7/18/2012 7/18/2012

2:45 10:31

7/18/2012 7/18/2012

6:00 11:49

7/24/2012 7/29/2012 8/4/2012

6:06 6:15 0:01

7/24/2012 7/29/2012 8/4/2012

10:31 11:32 13:30

10/25/2012

5:46

10/25/2012

18:45

0.100 0.320 0.240 0.240 0.270 0.240 0.410 0.270 0.240 0.240 0.240 0.240 0.200 0.360 0.150 0.200 0.240 0.240 0.290 0.240 0.240 0.260 0.320 0.240 0.240 0.170 0.190 0.170 0.240 0.240 0.260 0.240

38.8 167.0 81.1 81.1 68.7 81.1 84.0 66.0 81.1 81.1 81.1 81.1 30.9 539.0 18.4 94.4 81.1 81.1 67.1 81.1 81.1 36.5 112.0 81.1 81.1 24.2 8.0 20.1 81.1 81.1 36.0 81.1

Loading Interval Start 4/15/2012 2:30 5/1/2012 23:00 5/3/2012 9:45 5/4/2012 19:15 5/5/2012 15:00 5/6/2012 2:30 5/19/2012 19:00 5/21/2012 9:15 5/23/2012 21:15 5/25/2012 7:40 5/26/2012 10:15 5/27/2012 19:35 5/29/2012 8:00 6/10/2012 21:15 6/14/2012 10:00 6/16/2012 9:45 6/17/2012 23:15 6/19/2012 4:00 7/6/2012 18:30 7/6/2012 22:45 7/13/2012 7:15 7/13/2012 17:45 7/18/2012 1:45 7/18/2012 10:00 7/21/2012 6:30 7/23/2012 12:30 7/24/2012 5:00 7/28/2012 22:45 8/3/2012 23:15 8/15/2012 8:15 9/4/2012 1:45 10/25/2012 5:15 11/6/2012 7:45

End

Interval Volume (cf)

4/16/2012 3:00

104,371

5/2/2012 7:15 5/3/2012 19:15 5/4/2012 22:30 5/5/2012 22:15 5/6/2012 22:45 5/20/2012 11:30 5/21/2012 13:45 5/25/2012 7:35 5/26/2012 10:10 5/27/2012 19:30 5/29/2012 7:55 5/31/2012 12:00 6/12/2012 1:00 6/14/2012 23:15 6/17/2012 23:00 6/19/2012 3:45 6/19/2012 13:45 7/6/2012 19:45 7/7/2012 12:45 7/13/2012 10:45 7/13/2012 19:05 7/18/2012 8:45 7/21/2012 6:15 7/23/2012 12:15 7/24/2012 4:45 7/28/2012 22:30 7/29/2012 17:45 8/4/2012 16:15 8/15/2012 17:15 9/4/2012 15:00 10/25/2012 19:30 11/6/2012 9:45

78,350 148,864 6,359 25,413 308,263 43,390 23,719 1,867,541 306,202 470,715 563,273 145,784 75,634 281,043 74,324 227,358 94,798 1,376 158,377 10,794 9,043 28,216 237,652 255,916 21,818 235,077 134,280 91,270 41,270 30,974 147,072 1,189

Capitol Region Watershed District 2012 Monitoring Report 121

Interval TP (lb) 0.98 0.49 2.97 0.10 0.38 5.20 0.65 0.61 31.48 4.59 7.05 8.44 2.18 0.94 6.32 0.70 2.84 1.42 0.02 2.87 0.16 0.14 0.46 4.75 3.83 0.33 2.49 1.59 0.97 0.62 0.46 2.39 0.02

Interval TSS (lb) 216 190 1,552 32 129 1,322 220 124 7,695 1,550 2,383 2,852 738 146 9,456 85 1,340 480 7 663 55 46 64 1,662 1,296 110 355 67 115 209 157 331 6


Storm Flow-Weighted Average Base Flow-Weighted Average

0.252 0.000

91.4 0.0

Storm Subtotal Base Subtotal

Total Flow-Weighted Average 0.252 91.4 Note: Italics indicate estimated concentrations based on average storm flow concentrations. Average storm TP = 0.24 mg/L, TSS = 81.1 mg/L.

Total

Capitol Region Watershed District 2012 Monitoring Report 122

6,249,725 0

98 0

35,652 0

6,249,725

98

35,652


Appendix A.5

Trout Brook Subwatershed

The entire Trout Brook subwatershed is the largest subwatershed in CRWD that drains 8,000 acres in the cities of St. Paul, Maplewood, Falcon Heights and Roseville and includes the drainage areas of Como Lake in Saint Paul and Lake McCarrons in Roseville (Figure 43). It also contains Loeb Lake and five major stormwater ponds. Land use in the Trout Brook subwatershed is a mix of residential, industrial, and commercial, with 40% impervious surface. Runoff in the subwatershed drains to CRWD’s Trout Brook Storm Sewer Interceptor (TBI), which connects to the City of St. Paul’s storm sewer interceptor before eventually discharging to the Mississippi River, just downstream of Lambert’s Landing in St. Paul. The upper section of TBI is comprised of two branches, east and west, which converge near the intersection of Maryland Avenue and I35E in St. Paul. Trout Brook – West Branch Trout Brook – West Branch subwatershed drains 2,379 acres in St. Paul, Roseville, and Falcon Heights. It has the third largest drainage area of the nine monitoring sites. The ArlingtonJackson Stormwater Pond, Willow Reserve Stormwater Pond, Como Lake, Lake McCarrons, and Loeb Lake are located in this subwatershed (Figure 43). The monitoring site is located just upstream of the convergence with the east branch of the TBI in the northwest quadrant of the intersection of Maryland Avenue and I-35E. Trout Brook – East Branch Trout Brook - East Branch drains 932 acres in St. Paul and Maplewood and includes two stormwater ponds, Westminster-Mississippi and Arlington-Arkwright. First established in 2006, this monitoring station was moved slightly downstream in 2007 from its original location to a manhole located between L’Orient Street and I-35E ramp (Figure 43). Trout Brook Outlet Trout Brook Outlet receives water from nearly 5,028 acres of the Trout Brook subwatershed, including discharge from the Trout Brook—East Branch and Trout Brook—West Branch monitoring locations. It does not include the drainage areas of Como Lake and Lake McCarrons (Figure 43).

Trout Brook-West Branch

Trout Brook-East Branch

Trout Brook Outlet

Capitol Region Watershed District 2012 Monitoring Report 123


Figure 43. Sampling Sites in the Trout Brook Subwatershed. Capitol Region Watershed District 2012 Monitoring Report 124


Table 31. 2005-2012 Trout Brook – West Branch Monitoring Results. Subwatershed Area (ac) Total Rainfall (inches) Number of Monitoring Days Number of Storm Sampling Events Number of Storm Intervals Number of Snowmelt Sampling Events Number of Snowmelt Intervals Number of Base Sampling Events Number of Baseflow Intervals Total Discharge (cf) Storm Flow Subtotal (cf) Snowmelt Flow Subtotal (cf) Baseflow Subtotal (cf) Average TSS Concentration (mg/L) Total FWA TSS Concentration (mg/L) Storm FWA TSS Concentration (mg/L) Snowmelt FWA TSS Concentration (mg/L) Base FWA TSS Concentration (mg/L) Total TSS Loading (lbs) Storm TSS Loading (lbs) Snowmelt TSS Loading (lbs) Base TSS Loading (lbs) Total TSS Yield (lb/ac) Normalized Total TSS Yield (lb/ac/in runoff) Average TP Concentration (mg/L) Total FWA TP Concentration (mg/L) Storm FWA TP Concentration (mg/L) Snowmelt FWA TP Concentration (mg/L) Base FWA TP Concentration (mg/L) Total TP Loading (lbs) Storm TP Loading (lbs) Snowmelt TP Loading (lbs) Base TP Loading (lbs) Total TP Yield (lb/ac) Normalized Total TP Yield (lb/ac/in runoff)

2005 2,379 28.78 191 27 14

2006 2,379 24.67 212 12 21

2007 2,379 24.25 228 18 38

2008 2,379 18.99 224 8 27

2009 2,379 20.63 273 20 31

2010 2,379 36.32 365 21 54

6 32 141,113,120 27,471,750

10 23 105,996,024 26,637,070

10 36 178,456,040 39,682,781

13 28 136,464,730 33,416,733

16 30 173,066,683 56,480,312

15 51 333,565,680 136,032,158

103,641,370 270 108 312

79,358,954 266 125 400

138,773,259 109 43 156

103,047,997 375 115 378

116,586,370 130 86 233

197,212,437 203 96 222

34 950,788 730,597

33 827,991 665,210

10 476,080 386,111

29 978,540 788,964

14 927,558 747,671

9 1,991,582 1,881,829

220,191 400 24 0.359 0.163 0.408

162,781 348 28 0.280 0.190 0.420

89,468 200 10 0.240 0.110 0.310

189,576 411 26 0.501 0.171 0.470

104,904 390 19 0.287 0.174 0.412

109,272 837 22 0.263 0.183 0.371

0.075 1,440 955

0.110 1,249 697

0.060 1,255 761

0.073 1,453 981

0.058 1,739 1,179

0.054 3,820 3,150

484 0.605 0.037

553 0.525 0.043

494 0.528 0.026

472 0.611 0.039

422 0.731 0.036

668 1.606 0.042

Capitol Region Watershed District 2012 Monitoring Report 125

2011 2,379 33.62 365 11 27 6 13 19 33 328,689,637 135,021,212 15,136,168 178,532,258 70 76 154 73 17 1,555,358 1,298,980 68,730 187,648 654 17 0.201 0.201 0.341 0.270 0.088 4,116 2,878 255 983 1.730 0.045

2012 2,379 29.72 344 15 50 2 4 19 44 284,097,170 114,260,205 3,067,371 166,769,594 69 68 133 58 23 1,203,283 949,463 11,167 242,653 506 15 0.242 0.225 0.412 0.268 0.095 3,983 2,942 51 983 1.674 0.051


Figure 44. 2012 Trout Brook – West Branch Level, Discharge, and Rainfall. Capitol Region Watershed District 2012 Monitoring Report 126


Table 32. 2012 Trout Brook – West Branch Laboratory Data. Trout Brook - West Branch Sample Sampling Start Date/Time Type 01/04/2012 10:45 Base Grab 02/09/2012 08:45 Base Grab 03/13/2012 09:50 Base Grab Base Composite 04/23/2012 11:16 04/24/2012 10:35 Base Grab Base Grab 05/10/2012 09:30 Base Composite 05/10/2012 09:50 05/22/2012 09:00 Base Grab 06/04/2012 09:30 Base Grab Base Composite 06/04/2012 10:04 06/22/2012 10:15 Base Grab Base Grab 07/02/2012 09:45 07/02/2012 09:56 Base Composite 07/16/2012 09:50 Base Grab 07/16/2012 10:08 Base Composite Base Grab 07/31/2012 10:13 Base Composite 07/31/2012 10:37 08/27/2012 10:13 Base Grab Base Composite 08/13/2012 09:42 Base Grab 08/13/2012 09:35 Base Composite 08/27/2012 10:13 Base Grab 09/10/2012 10:21 Base Composite 09/10/2012 10:22 Base Grab 09/24/2012 10:10 09/24/2012 10:07 Base Composite Base Grab 10/10/2012 10:30 Base Composite 10/10/2012 10:37 Base Grab 10/30/2012 09:40 Base Composite 10/30/2012 09:41 11/29/2012 11:00 Base Grab Base Grab 12/21/2012 10:40

Snowmelt Grab Snowmelt Grab Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab

01/26/2012 11:10 03/06/2012 14:45 04/21/2012 16:13 05/01/2012 22:36 05/02/2012 10:19 05/03/2012 10:30 05/04/2012 19:08 05/19/2012 19:28 05/23/2012 21:13 05/24/2012 09:06 06/06/2012 19:15 06/14/2012 11:00 06/14/2012 10:06 07/06/2012 19:19 07/13/2012 04:47 07/18/2012 10:33 07/24/2012 09:50 07/24/2012 05:43 07/29/2012 06:38 08/03/2012 23:44 10/25/2012 05:38 10/25/2012 11:15

Sampling End Date/Time 01/04/2012 10:45 02/09/2012 08:45 03/13/2012 09:50 04/24/2012 10:23 04/24/2012 10:35 05/10/2012 09:30 05/11/2012 09:55 05/22/2012 09:00 06/04/2012 09:30 06/05/2012 09:23 06/22/2012 10:15 07/02/2012 09:45 07/03/2012 01:27 07/16/2012 09:50 07/17/2012 08:45 07/31/2012 10:13 08/01/2012 09:34 08/27/2012 10:13 08/14/2012 09:28 08/13/2012 09:35 08/28/2012 09:13 09/10/2012 10:21 09/11/2012 08:30 09/24/2012 10:10 09/25/2012 09:22 10/10/2012 10:30 10/11/2012 09:22 10/30/2012 09:40 10/31/2012 09:11 11/29/2012 11:00 12/21/2012 10:40 Base Average

Ortho-P mg/L 0.025 0.010 0.010 0.010 0.010 0.032 0.010 0.053 0.010 0.025 0.028 0.010 0.010 0.010 0.010 0.010 0.027 0.056 0.020

Cl mg/L 88.5 70.7 81.0 84.0 85.2 71.8 78.0 68.1 68.8 62.7 63.4 62.9 57.7 55.6 55.3 54.7 56.1 62.8 83.1 69.0

Cd mg/L 0.000080 0.000510 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000094 0.000080 0.000080 0.000080 0.000080 0.000080 0.000150 0.000080 0.000140 0.000080 0.000080 0.000110

Cr mg/L 0.00096 0.01200 0.00095 0.00200 0.00086 0.00050 0.00050 0.00077 0.00073 0.00100 0.00100 0.00075 0.00100 0.00100 0.00260 0.00110 0.00270 0.00140 0.00120 0.00174

Cu mg/L 0.0019 0.0256 0.0025 0.0050 0.0027 0.0011 0.0017 0.0017 0.0033 0.0018 0.0028 0.0023 0.0019 0.0027 0.0078 0.0029 0.0086 0.0022 0.0025 0.0043

Pb mg/L 0.00080 0.02440 0.00099 0.00540 0.00170 0.00033 0.00080 0.00071 0.00140 0.00056 0.00120 0.00140 0.00250 0.00230 0.01480 0.00370 0.00630 0.00160 0.00180 0.00383

01/26/2012 11:10 03/06/2012 14:45 04/22/2012 04:43 05/02/2012 00:33 05/02/2012 23:05 05/03/2012 10:30 05/05/2012 04:51 05/20/2012 03:33 05/24/2012 01:33 05/24/2012 09:06 06/07/2012 00:47 06/14/2012 11:00 06/14/2012 11:31 07/07/2012 01:10 07/13/2012 05:31 07/18/2012 14:22 07/24/2012 09:50 07/24/2012 12:09 07/29/2012 10:51 08/04/2012 02:29 10/25/2012 06:38 10/25/2012 11:15 Snowmelt Average Storm Average Annual Average Annual Maximum Annual Minimum Annual Median

0.010 0.270 0.010 0.010 0.022 0.010 0.035 0.035 0.010 0.025 0.084 0.140 0.027 0.030 0.270 0.010 0.010

238.0 54.7 52.8 23.8 80.6 58.5 26.7 15.8 31.0 12.9 15.7 13.7 11.4 36.5 11.5 13.0 146.4 28.9 57.3 238.0 11.4 57.7

0.000080 0.000094 0.000120 0.000260 0.000080 0.000080 0.000210 0.000390 0.000190 0.000270 0.000300 0.000390 0.000330 0.000140 0.000120 0.000160 0.000087 0.000217 0.000152 0.000510 0.000080 0.000080

0.00110 0.00460 0.00350 0.00960 0.00110 0.00190 0.00580 0.00700 0.00630 0.00640 0.00650 0.00720 0.01270 0.00310 0.00150 0.00660 0.00285 0.00566 0.00337 0.01270 0.00050 0.00150

0.0019 0.0128 0.0107 0.0202 0.0030 0.0045 0.0217 0.0250 0.0159 0.0206 0.0243 0.0263 0.0304 0.0075 0.0046 0.0192 0.0074 0.0167 0.0094 0.0304 0.0011 0.0045

0.00150 0.01190 0.01480 0.01690 0.00170 0.00260 0.01710 0.02910 0.01810 0.02380 0.02080 0.02780 0.04390 0.00480 0.00280 0.01800 0.00670 0.01730 0.00938 0.04390 0.00033 0.00280

2.91

Ni mg/L 0.00100 0.00770 0.00094 0.00170 0.00110 0.00077 0.00088 0.00087 0.00130 0.00110 0.00170 0.00097 0.00050 0.00070 0.00250 0.00120 0.00230 0.00140 0.00130 0.00158

Zn mg/L 0.0054 0.0877 0.0079 0.0245 0.0147 0.0050 0.0086 0.0054 0.0120 0.0112 0.0101 0.0118 0.0107 0.0128 0.0275 0.0117 0.0422 0.0081 0.0081 0.0171

NH3 mg/L 0.260 0.520 0.350 0.130 0.120 0.200 0.095 0.240 0.140 0.130 0.075 0.075 0.100 0.130 0.093 0.150 0.120 0.280 0.330 0.186

2.87 2.87 2.89 2.91 2.87 2.89

0.00110 0.00350 0.00290 0.00500 0.00120 0.00110 0.00490 0.00690 0.00240 0.00520 0.00570 0.00680 0.01280 0.00230 0.00130 0.00580 0.00230 0.00459 0.00282 0.01280 0.00050 0.00140

0.0065 0.0517 0.0491 0.1190 0.0127 0.0213 0.1020 0.1300 0.0977 0.1050 0.1150 0.1540 0.1350 0.0324 0.0199 0.0894 0.0291 0.0845 0.0447 0.1540 0.0050 0.0199

0.460 0.560 0.040 0.040 0.040 0.140 0.230 0.270 0.900 0.110 0.250 0.860 0.180 0.040 0.040 0.380 0.510 0.251 0.231 0.900 0.040 0.140

K mg/L 2.91 -

1.0 5.4 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.2 1.0 1.0 1.3

Total P mg/L 0.05 0.55 0.10 0.13 0.11 0.10 0.05 0.13 0.12 0.05 0.13 0.13 0.05 0.05 0.05 0.10 0.18 0.05 0.22 0.10

NO3 mg/L 0.74 0.78 0.51 0.52 0.45 0.47 0.47 0.40 0.38 0.28 0.34 0.51 0.67 0.51 0.52 0.58 0.48 0.55 0.52 0.51

1.0 2.5 1.5 2.7 1.0 1.8 3.1 3.4 2.8 1.9 1.0 1.7 1.0 1.0 1.0 1.0 1.8 1.8 1.5 5.4 1.0 1.0

0.05 0.44 0.20 0.41 0.10 0.14 0.38 0.57 0.51 0.30 0.54 0.81 0.55 0.23 0.14 0.39 0.90 0.25 0.41 0.24 0.90 0.05 0.13

0.77 0.30 0.53 0.56 0.38 0.36 0.52 0.28 0.10 0.49 0.38 0.84 0.38 0.33 0.32 0.27 0.54 0.41 0.47 0.84 0.10 0.48

TKN mg/L

NO2 +NO3 NO2 mg/L mg/L 0.77 0.10 0.80 0.10 0.10 0.54 0.53 0.10 0.47 0.10 0.51 0.10 0.50 0.10 0.10 0.43 0.10 0.40 0.30 0.10 0.35 0.10 0.54 0.10 0.68 0.10 0.10 0.58 0.58 0.10 0.10 0.63 0.10 0.50 0.10 0.57 0.10 0.54 0.10 0.54 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.16 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.16 0.10 0.10

TSS mg/L 344 328 331 326 278 295 342 268 308 284 286 342 317 304 286 282 313 328 309

9.0 153.0 9.2 33.2 15.3 4.4 7.9 6.2 17.9 15.9 15.0 53.8 13.7 19.3 79.2 20.0 62.2 20.2 18.9 23.4

TVS mg/L 61.0 172.0 61.0 114.0 90.3 92.1 128.0 121.0 61.4 97.4 93.3 66.3 96.5

612 194 220 106 289 184 142 104 153 90 92 93 20 168 68 80 403 129 241 612 20 283

9.4 97.4 125.0 163.0 14.1 16.8 192.0 227.0 142.0 200.0 196.0 318.0 69.2 37.4 14.2 109.0 53.4 130.3 69.2 318.0 4.4 20.1

80.0 64.0 101.0 99.0 55.0 106.0 181.0 128.0 94.0 22.0 153.0 75.0 85.9 17.9 24.7 72.0 87.9 90.5 181.0 17.9 92.1

TDS mg/L

0.80 0.33 0.54 0.59 0.39 0.39 0.61 0.32 0.24 0.50 0.38 0.90 0.40 0.34 0.34 0.33 0.57 0.45 0.50 0.90 0.24 0.50

Note: Nitrate (NO3 ), Nitrite (NO2 ), and CBOD values may contain estimated unflagged data Red Text

Capitol Region Watershed District 2012 Monitoring Report 127

41 10 10 20

Hardness mg/L 218.0 272.0 166.0 180.0 155.0 169.0 188.0 154.0 191.0 176.0 169.0 203.0 184.0 195.0 194.0 191.0 194.0 197.0 176.0 188.0

20 41 10 10

225.0 63.7 102.0 99.7 147.0 100.0 97.3 96.0 109.0 82.4 80.9 113.0 174.0 99.3 42.2 75.8 144.4 101.3 150.8 272.0 42.2 169.0

VSS mg/L

Actual value less than number (<) Reporting limit halved Not collected Outlier not included in averages

2.0 3.4 2.0 69.0 4.7 2.0 9.7 2.0 13.1 5.1 4.8 2.8 64.8 3.2 6.7 7.2 2.0 2.8 11.5

SO4 mg/L 32.3 28.7 22.5 25.4 22.1 23.8 23.3 17.6 25.4 24.0 21.0 26.4 26.0 25.5 28.0 26.2 28.2 24.9 23.2 25.0

2.1 10.5 20.0 3.3 23.8 10.0 3.8 9.7 3.5 6.3 10.6 10.9 69.0 2.0 4.7

29.7 6.9 14.1 7.4 18.9 11.6 9.7 4.8 9.7 5.6 5.7 6.3 3.2 8.6 3.2 4.5 18.3 8.1 17.8 32.3 3.2 22.1

CBOD mg/L

Fl mg/L

Ca mg/L

Mg mg/L

0.45 0.45

45.6 50.7 54.7 50.3

13.5 14.0 14.3 13.9

0.31 0.31 0.38 0.45 0.31 0.38

43.5 27.4 20.9 30.6 40.5 54.7 20.9 44.6

15.8 7.5 5.8 9.7 11.8 15.8 5.8 13.8

E. coli pH Std. Units mpn/100 mL 687 8.0 770 7.7 86 8.1 7.5 124 107 7.8 276 7.8 154 7.5 7.6 88 326 7.8 387 7.5 166 8.1 249 7.8 238 7.8 5,200 8.0 1,986 8.0 291 7.9 345 201 8.0 7,500 7.8 7.8 1,010 7.8 7.2 7.0 6.7 7.8 7.3 6.6 6.4 7.3 6.6 6.4 6.7 6.8 7.2 7.2 7.1 7.5 6.9 7.4 8.1 6.4 7.6

12,100 2,420 25,600 2,420 2,420 8,992 2,673 25,600 86 336


Capitol Region Watershed District 2012 Monitoring Report 128


Table 33. 2012 Trout Brook – West Branch Loading.

Sample Type Base Grab Snowmelt Base Snowmelt Grab Base Snowmelt Base Grab Storm Base Storm Storm Storm Storm Base Snowmelt Grab Base Storm Base Storm Base Storm Base Grab Storm Base Storm Base Storm Base Storm Base Storm Base Storm

Sample Collection Time Start Start Date End Date Time 1/4/2012

10:45

1/4/2012

End Time 10:45

1/26/2012

11:10

1/26/2012

11:10

2/9/2012

8:45

2/9/2012

8:45

3/6/2012

14:45

3/6/2012

14:45

3/13/2012

9:50

3/13/2012

9:50

TP (mg/L)

TSS (mg/L)

0.05

9 53 23 9 23 53 23 130 23 130 130 130 130 23 97 23 130 23 130 23 130 9 130 23 130 23 130 23 130 23 130 23 130

0.25 0.10 0.05 0.10 0.25 0.10 0.41 0.10 0.41 0.41 0.41 0.41 0.10 0.44 0.10 0.41 0.10 0.41 0.10 0.41 0.10 0.41 0.10 0.41 0.10 0.41 0.10 0.41 0.10 0.41 0.10 0.41

Loading Interval Start 1/1/2012 0:00 1/6/2012 10:45 1/7/2012 13:30 1/25/2012 13:00 1/27/2012 6:30 1/31/2012 12:00 2/1/2012 7:00 2/20/2012 10:00 2/22/2012 3:30 2/28/2012 16:45 2/29/2012 10:15 3/1/2012 10:15 3/2/2012 8:45 3/2/2012 23:45 3/6/2012 10:30 3/6/2012 23:15 3/7/2012 8:45 3/7/2012 20:45 3/10/2012 12:00 3/10/2012 20:15 3/11/2012 23:45 3/12/2012 22:45 3/19/2012 20:30 3/21/2012 3:15 3/22/2012 17:00 3/23/2012 12:00 3/29/2012 21:50 3/30/2012 0:50 4/2/2012 23:50 4/4/2012 3:00 4/7/2012 12:00 4/7/2012 18:20 4/15/2012 2:00

Interval Volume (cf)

Interval TP (lb)

Interval TSS (lb)

1/6/2012 10:30

1,944,361

1/7/2012 13:15 1/25/2012 12:45 1/27/2012 6:15 1/31/2012 11:45 2/1/2012 6:45 2/20/2012 9:45 2/22/2012 3:15 2/28/2012 16:30 2/29/2012 10:00 3/1/2012 10:00 3/2/2012 8:30 3/2/2012 23:30 3/6/2012 10:15 3/6/2012 23:00 3/7/2012 8:30 3/7/2012 20:30 3/10/2012 11:45 3/10/2012 20:00 3/11/2012 23:30 3/12/2012 22:30 3/19/2012 20:15 3/21/2012 3:00 3/22/2012 16:45 3/23/2012 11:50 3/29/2012 21:40 3/30/2012 0:40 4/2/2012 23:40 4/4/2012 2:50 4/7/2012 11:50 4/7/2012 18:10 4/15/2012 1:50 4/15/2012 19:20

547,916 7,754,643 858,066 1,829,456 460,338 7,559,681 852,557 2,851,000 1,853,398 1,726,573 1,127,155 855,923 3,022,730 1,201,050 381,468 907,453 1,973,950 405,513 924,140 1,676,498 7,274,404 2,982,137 1,620,464 1,189,980 3,066,840 132,313 1,717,680 995,503 1,252,210 180,765 2,563,160 1,524,380

6.07 8.55 48.41 2.68 11.42 7.18 47.19 21.82 17.80 47.44 44.19 28.85 21.91 18.87 32.99 2.38 23.23 12.32 10.38 5.77 42.91 45.41 76.33 10.12 30.46 19.15 3.39 10.72 25.48 7.82 4.63 16.00 39.02

1,092 1,827 11,328 504 2,672 1,535 11,043 6,935 4,165 15,076 14,044 9,168 6,962 4,416 7,303 557 7,381 2,883 3,298 1,350 13,637 4,178 24,257 2,367 9,679 4,480 1,076 2,509 8,098 1,829 1,470 3,744 12,400

End

Capitol Region Watershed District 2012 Monitoring Report 129


Storm Storm Base Storm Base Storm Base Storm Base Storm Base Storm Composite Base Composite Storm Base Storm Base Storm Composite Storm Composite Base Storm Storm Composite Storm Storm Storm Base Composite Storm Base Storm Composite Base Grab Storm Composite Storm Base Composite Storm Composite Base Storm Base Storm Composite

4/21/2012 4/23/2012

16:13 11:16

4/22/2012 4/24/2012

4:43 10:23

5/1/2012 5/2/2012

22:36 10:19

5/2/2012 5/2/2012

0:33 23:05

5/4/2012

19:08

5/5/2012

4:51

5/10/2012

9:50

5/11/2012

9:55

5/19/2012 5/22/2012 5/23/2012

19:28 9:00 21:13

5/20/2012 5/22/2012 5/24/2012

3:33 9:00 1:33

6/4/2012 6/6/2012

10:04 19:15

6/5/2012 6/7/2012

9:23 0:47

6/14/2012

10:06

6/14/2012

11:31

0.41 0.41 0.10 0.41 0.10 0.41 0.10 0.41 0.10 0.41 0.10 0.20 0.13 0.41 0.10 0.41 0.10 0.41 0.10 0.10 0.41 0.14 0.41 0.41 0.41 0.11 0.41 0.10 0.38 0.10 0.57 0.41 0.05 0.51 0.10 0.41 0.10 0.30

130 130 23 130 23 130 23 130 23 130 23 125 33 130 23 130 23 163 14 23 130 17 130 130 130 15 130 23 192 4 227 130 8 142 23 130 23 200

4/15/2012 19:30 4/16/2012 1:50 4/16/2012 10:50 4/17/2012 23:00 4/18/2012 3:20 4/18/2012 13:00 4/18/2012 22:50 4/19/2012 11:00 4/19/2012 12:20 4/20/2012 13:40 4/20/2012 18:10 4/21/2012 15:20 4/22/2012 17:10 4/25/2012 3:30 4/26/2012 7:30 4/28/2012 11:40 4/28/2012 18:50 5/1/2012 22:00 5/2/2012 8:10 5/2/2012 23:40 5/3/2012 10:20 5/4/2012 19:00 5/5/2012 14:30 5/6/2012 2:30 5/8/2012 21:40 5/9/2012 22:00 5/11/2012 19:50 5/12/2012 3:40 5/19/2012 19:20 5/20/2012 8:30 5/23/2012 20:50 5/24/2012 14:10 5/29/2012 21:00 6/6/2012 19:10 6/7/2012 3:50 6/10/2012 21:20 6/11/2012 19:20 6/14/2012 9:40

4/16/2012 1:40 4/16/2012 10:40 4/17/2012 22:50 4/18/2012 3:10 4/18/2012 12:50 4/18/2012 22:40 4/19/2012 10:50 4/19/2012 12:10 4/20/2012 13:30 4/20/2012 18:00 4/21/2012 15:10 4/22/2012 17:00 4/25/2012 3:20 4/26/2012 7:20 4/28/2012 11:30 4/28/2012 18:40 5/1/2012 21:50 5/2/2012 8:00 5/2/2012 23:30 5/3/2012 10:10 5/4/2012 18:50 5/5/2012 14:20 5/6/2012 2:20 5/8/2012 21:30 5/9/2012 21:50 5/11/2012 19:40 5/12/2012 3:30 5/19/2012 19:10 5/20/2012 8:20 5/23/2012 20:40 5/24/2012 14:00 5/29/2012 20:50 6/6/2012 19:00 6/7/2012 3:40 6/10/2012 21:10 6/11/2012 19:10 6/14/2012 9:30 6/16/2012 9:30

Capitol Region Watershed District 2012 Monitoring Report 130

632,143 818,916 1,613,360 328,000 455,407 679,021 277,442 48,282 677,141 101,446 381,631 1,124,387 1,771,446 891,648 1,130,624 295,890 1,843,880 1,340,899 851,801 504,112 3,276,360 1,520,249 1,400,203 8,046,875 1,683,614 2,168,765 376,456 5,310,009 1,190,946 2,814,493 6,217,476 18,437,760 9,079,570 1,000,705 3,560,579 1,600,567 1,951,744 5,248,112

16.18 20.96 10.07 8.40 2.84 17.38 1.73 1.24 4.23 2.60 2.38 14.04 14.38 22.82 7.06 7.57 11.51 34.32 5.32 3.15 83.86 13.29 35.84 205.96 43.09 14.89 9.64 33.15 28.25 17.57 221.24 471.91 28.34 31.86 22.23 40.97 12.18 98.29

5,142 6,661 2,357 2,668 665 5,523 405 393 989 825 557 8,774 3,671 7,253 1,652 2,407 2,693 13,644 750 736 26,650 1,594 11,389 65,454 13,695 2,071 3,062 7,757 14,274 773 88,106 149,975 4,478 8,871 5,201 13,019 2,851 65,524


Storm Base Grab Base Composite Storm Base Storm Composite Base Storm Composite Base Composite Storm Composite Storm Storm Composite Storm Composite Base Composite Storm Composite Base Composite Storm Base Composite Base Composite Base Composite Base Composite Storm Composite Base Composite Storm Base Grab Storm Base Grab

6/22/2012 7/2/2012

10:15 9:56

6/22/2012 7/3/2012

10:15 1:27

7/6/2012

19:19

7/7/2012

1:10

7/13/2012 7/16/2012 7/18/2012

4:47 10:08 10:33

7/13/2012 7/17/2012 7/18/2012

5:31 8:45 14:22

7/24/2012 7/29/2012 7/31/2012 8/3/2012 8/13/2012

5:43 6:38 10:37 23:44 9:42

7/24/2012 7/29/2012 8/1/2012 8/4/2012 8/14/2012

12:09 10:51 9:34 2:29 9:28

8/27/2012 9/10/2012 9/24/2012 10/10/2012 10/25/2012 10/30/2012

10:13 10:22 10:07 10:37 5:38 9:41

8/28/2012 9/11/2012 9/25/2012 10/11/2012 10/25/2012 10/31/2012

9:13 8:30 9:22 9:22 6:38 9:11

11/29/2012

11:00

11/29/2012

11:00

12/21/2012

10:40

12/21/2012

10:40

Snowmelt Flow-Weighted Average Storm Flow-Weighted Average Base Flow-Weighted Average Total Flow-Weighted Average

0.41 0.13 0.12 0.41 0.10 0.54 0.10 0.81 0.05 0.55 0.41 0.23 0.14 0.13 0.39 0.13 0.41 0.05 0.05 0.05 0.10 0.90 0.18 0.41 0.05 0.41 0.22

130 6 18 130 23 196 23 318 16 69 130 37 14 15 109 54 130 14 19 79 20 130 62 130 20 130 19

0.27 0.41 0.10 0.22

58 133 23 68

6/16/2012 9:40 6/22/2012 4:20 6/27/2012 10:50 7/3/2012 2:20 7/3/2012 10:00 7/6/2012 18:10 7/7/2012 13:10 7/13/2012 4:00 7/14/2012 11:50 7/18/2012 2:00 7/21/2012 6:30 7/24/2012 5:10 7/28/2012 18:30 7/30/2012 1:50 8/3/2012 23:30 8/4/2012 16:40 8/15/2012 8:30 8/16/2012 1:30 9/1/2012 13:40 9/18/2012 14:30 9/30/2012 4:30 10/25/2012 4:50 10/25/2012 17:50 11/6/2012 3:00 11/6/2012 12:00 12/14/2012 20:45 12/17/2012 9:15

6/22/2012 4:10 6/27/2012 10:40 7/3/2012 2:10 7/3/2012 9:50 7/6/2012 18:00 7/7/2012 13:00 7/13/2012 3:50 7/14/2012 11:40 7/18/2012 1:50 7/21/2012 6:20 7/24/2012 5:00 7/28/2012 18:20 7/30/2012 1:40 8/3/2012 23:20 8/4/2012 16:30 8/15/2012 8:20 8/16/2012 1:20 9/1/2012 13:30 9/17/2012 2:00 9/30/2012 4:20 10/25/2012 4:40 10/25/2012 17:40 11/6/2012 2:50 11/6/2012 11:50 12/14/2012 20:30 12/17/2012 9:00 12/31/2012 23:45

14,156,670 3,854,016 3,351,543 364,333 2,132,702 1,444,750 3,335,093 2,127,194 2,042,162 4,882,465 5,554,968 4,684,031 1,995,511 3,272,036 1,237,089 5,616,631 761,900 7,325,668 6,609,103 5,155,277 13,140,356 803,684 5,528,864 527,033 19,498,260 2,198,672 6,631,493

362.34 31.28 25.11 9.33 13.31 48.70 20.82 107.56 6.37 167.64 142.18 67.25 17.44 26.55 30.12 45.58 19.50 22.87 20.63 16.09 82.03 45.15 62.13 13.49 60.86 56.27 91.08

115,152 1,492 3,745 2,964 3,115 17,677 4,872 42,228 2,027 21,092 45,185 10,936 1,769 3,064 8,418 18,864 6,197 6,265 7,963 25,488 16,406 6,537 21,468 4,287 24,587 17,884 7,824

Snowmelt Subtotal Storm Subtotal Base Subtotal Total

3,067,371 114,260,205 166,769,594 284,097,170

51 2,941.97 989.86 3,983.24

11,167 949,463 242,653 1,203,283

Note: Italics indicate estimated concentrations based on average base, snowmelt and storm flow concentrations.

Capitol Region Watershed District 2012 Monitoring Report 131


Capitol Region Watershed District 2012 Monitoring Report 132


Table 34. 2006-2012 Trout Brook – East Branch Monitoring Results. 2006 Subwatershed Area (ac) Total Rainfall (inches) Number of Monitoring Days Number of Storm Sampling Events Number of Storm Intervals Number of Snowmelt Sampling Events Number of Snowmelt Intervals Number of Base Sampling Events Number of Baseflow Intervals Total Discharge (cf) Storm Flow Subtotal (cf) Snowmelt Flow Subtotal (cf) Baseflow Subtotal (cf) Average TSS Concentration (mg/L) Total FWA TSS Concentration (mg/L) Storm FWA TSS Concentration (mg/L) Snowmelt FWA TSS Concentration (mg/L) Base FWA TSS Concentration (mg/L) Total TSS Loading (lbs) Storm TSS Loading (lbs) Snowmelt TSS Loading (lbs) Base TSS Loading (lbs) Total TSS Yield (lb/ac) Normalized Total TSS Yield (lb/ac/in runoff) Average TP Concentration (mg/L) Total FWA TP Concentration (mg/L) Storm FWA TP Concentration (mg/L) Snowmelt FWA TP Concentration (mg/L) Base FWA TP Concentration (mg/L) Total TP Loading (lbs) Storm TP Loading (lbs) Snowmelt TP Loading (lbs) Base TP Loading (lbs) Total TP Yield (lb/ac) Normalized Total TP Yield (lb/ac/in runoff)

2007

2008

2009

2010

451 23.87 191 11 27

932 23.92 220 24 30

932 17.91 220 14 19

932 20.63 273 18 32

932 36.27 359 19 37

8 27 8,769,577 7,411,730

11 23 22,368,888 14,214,980

14 20 19,741,039 9,634,182

19 29 26,611,519 11,911,763

15 35 41,959,911 21,073,199

1,357,847 37 44 51

8,153,908 98 71 105

10,106,857 72 70 132

14,699,756 49 39 79

20,886,712 51 44 83

7 24,279 23,687

11 99,207 93,578

11 86,186 79,265

8 65,532 58,555

5 115,109 109,063

591 54 10 0.220 0.280 0.320

5,628 106 16 0.240 0.210 0.280

6,921 92 16 0.181 0.177 0.287

6,977 70 9 0.169 0.148 0.255

3,047 124 10 0.278 0.261 0.404

0.090 155 147

0.080 292 251

0.071 218 173

0.060 245 190

0.116 683 531

8 0.344 0.064

41 0.313 0.047

45 0.234 0.040

55 0.263 0.033

152 0.733 0.059

Capitol Region Watershed District 2012 Monitoring Report 133

2011 932 33.43 349 11 32 9 10 18 35 43,363,061 19,264,104 2,405,051 21,693,906 37 46 79 56 16 124,707 94,989 8,365 21,353 134 10 0.196 0.201 0.314 0.198 0.101 544 378 30 136 0.584 0.046

2012 932 30.01 357 17 34 2 6 19 34 42,492,402 15,359,967 2,496,397 24,636,038 53 54 109 64 19 143,168 104,312 10,019 28,837 154 12 0.222 0.207 0.378 0.315 0.090 550 363 49 138 0.590 0.047


Figure 45. 2012 Trout Brook – East Branch Level, Discharge, and Rainfall. Capitol Region Watershed District 2012 Monitoring Report 134


Table 35. 2012 Trout Brook – East Branch Laboratory Data. Trout Brook - East Branch Sampling Start Sample Type Date/Time Base Grab 01/04/2012 10:30 02/09/2012 08:20 Base Grab 03/13/2012 09:35 Base Grab Base Composite 04/23/2012 10:26 Base Grab 04/24/2012 10:25 05/10/2012 09:15 Base Grab 05/10/2012 09:54 Base Composite Base Grab 05/22/2012 08:51 06/04/2012 09:20 Base Grab 06/04/2012 09:38 Base Composite 06/22/2012 09:55 Base Grab Base Grab 07/02/2012 09:30 07/02/2012 10:05 Base Composite Base Grab 07/16/2012 09:29 07/16/2012 10:10 Base Composite Base Grab 07/31/2012 10:10 Base Composite 07/31/2012 10:51 08/13/2012 09:25 Base Grab 08/13/2012 09:59 Base Composite 08/27/2012 10:02 Base Grab Base Composite 08/27/2012 10:33 09/10/2012 10:10 Base Grab Base Composite 09/10/2012 10:46 Base Grab 09/24/2012 09:50 Base Composite 09/24/2012 10:25 10/10/2012 10:15 Base Grab 10/10/2012 10:54 Base Composite Base Grab 10/30/2012 09:25 Base Composite 10/30/2012 09:57 11/29/2012 10:40 Base Grab Base Grab 12/21/2012 10:25

Snowmelt Grab Snowmelt Grab Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite

01/26/2012 11:00 03/06/2012 14:35 04/17/2012 23:54 04/21/2012 22:35 05/01/2012 23:32 05/03/2012 10:25 05/03/2012 10:35 05/05/2012 15:24 05/19/2012 19:51 05/24/2012 09:04 05/23/2012 22:06 06/10/2012 22:25 06/14/2012 10:55 06/14/2012 10:23 06/16/2012 10:26 07/06/2012 23:18 07/13/2012 04:38 07/18/2012 10:55 07/24/2012 09:45 07/24/2012 06:37 07/29/2012 00:13 08/03/2012 23:45 10/25/2012 11:12 10/25/2012 05:52

Sampling End Date/Time 01/04/2012 10:30 02/09/2012 08:20 03/13/2012 09:35 04/24/2012 07:41 04/24/2012 10:25 05/10/2012 09:15 05/11/2012 09:49 05/22/2012 08:51 06/04/2012 09:20 06/04/2012 21:24 06/22/2012 09:55 07/02/2012 09:30 07/03/2012 02:42 07/16/2012 09:29 07/17/2012 08:49 07/31/2012 10:10 08/01/2012 09:30 08/13/2012 09:25 08/14/2012 09:08 08/27/2012 10:02 08/28/2012 08:05 09/10/2012 10:10 09/11/2012 08:37 09/24/2012 09:50 09/25/2012 09:00 10/10/2012 10:15 10/11/2012 08:58 10/30/2012 09:25 10/31/2012 08:47 11/29/2012 10:40 12/21/2012 10:25 Base Average

Ortho-P mg/L 0.038 0.010 0.068 0.035 0.062 0.092 0.052 0.076 0.010 0.052 0.042 0.024 0.062 0.010 0.031 0.027 0.036 0.030 0.034 0.042

Cl mg/L 370.0 509.0 351.0 278.0 357.0 445.0 345.0 286.0 342.0 356.0 340.0 438.0 416.0 340.0 349.0 394.0 408.0 397.0 400.0 374.8

Cd mg/L 0.000080 0.000100 0.000080 0.000080 0.000190 0.001400 0.000080 0.000080 0.000370 0.000086 0.000085 0.000130 0.000100 0.000120 0.000095 0.000150 0.000097 0.000080 0.000080 0.000183

Cr mg/L 0.00120 0.00320 0.00092 0.00078 0.00190 0.00099 0.00072 0.00096 0.00130 0.00097 0.00100 0.00150 0.00100 0.00110 0.00079 0.00130 0.00150 0.00220 0.00050 0.00125

Cu mg/L 0.0040 0.0060 0.0029 0.0026 0.0031 0.0045 0.0022 0.0018 0.0029 0.0022 0.0026 0.0030 0.0028 0.0025 0.0016 0.0027 0.0035 0.0036 0.0009 0.0029

Pb mg/L 0.00180 0.00640 0.00100 0.00140 0.00250 0.00490 0.00330 0.00023 0.00190 0.00140 0.00140 0.00250 0.00210 0.00200 0.00130 0.00240 0.00450 0.00470 0.00087 0.00245

Ni mg/L 0.0027 0.0035 0.0023 0.0023 0.0033 0.0058 0.0023 0.0023 0.0029 0.0024 0.0026 0.0039 0.0022 0.0012 0.0022 0.0043 0.0037 0.0044 0.0023 0.0030

Zn mg/L 0.0120 0.0498 0.0130 0.0186 0.0249 2.0000 0.0213 0.0076 0.0254 0.0171 0.0173 0.0511 0.0178 0.0149 0.0140 0.0159 0.0249 0.0173 0.0054 0.1246

NH3 mg/L 0.071 0.130 0.450 0.080 0.480 0.400 0.120 0.340 0.130 0.150 0.180 0.220 0.260 0.077 0.070 0.200 0.240 0.260 0.120 0.209

01/26/2012 11:00 03/06/2012 14:35 04/18/2012 09:23 04/22/2012 07:00 05/02/2012 02:59 05/03/2012 10:25 05/03/2012 12:46 05/05/2012 20:33 05/20/2012 03:18 05/24/2012 09:04 05/24/2012 02:14 06/11/2012 04:33 06/14/2012 10:55 06/14/2012 13:57 06/16/2012 19:19 07/07/2012 06:09 07/13/2012 10:50 07/18/2012 12:47 07/24/2012 09:45 07/24/2012 19:39 07/29/2012 12:21 08/04/2012 05:22 10/25/2012 11:12 10/25/2012 12:02 Snowmelt Average Storm Average Annual Average Annual Maximum Annual Minimum Annual Median

0.010 0.150 0.056 0.032 0.066 0.120 0.073 0.025 0.079 0.078 0.110 0.140 0.094 0.140 0.320 0.080 0.103 0.067 0.320 0.010 0.054

476.0 205.0 89.5 115.0 53.4 43.7 39.3 90.5 53.8 66.6 48.8 53.7 71.6 65.8 33.7 93.3 60.0 44.9 81.2 340.5 65.0 234.4 509.0 33.7 282.0

0.000080 0.000140 0.000080 0.000080 0.000120 0.000330 0.000080 0.000160 0.000260 0.000080 0.000190 0.000080 0.000140 0.000130 0.000480 0.000080 0.000095 0.000097 0.000200 0.000110 0.000158 0.000168 0.001400 0.000080 0.000097

0.00160 0.00560 0.00210 0.00220 0.00410 0.01320 0.00390 0.00570 0.00790 0.00050 0.01020 0.00390 0.00290 0.00370 0.02420 0.00330 0.00200 0.00270 0.00490 0.00360 0.00573 0.00338 0.02420 0.00050 0.00195

0.0024 0.0137 0.0060 0.0050 0.0100 0.0245 0.0055 0.0180 0.0176 0.0010 0.0157 0.0063 0.0312 0.0103 0.0390 0.0080 0.0050 0.0088 0.0156 0.0081 0.0134 0.0079 0.0390 0.0009 0.0043

0.00330 0.01180 0.00270 0.00130 0.00800 0.02900 0.00340 0.01130 0.02480 0.00180 0.02320 0.01040 0.00680 0.01020 0.10700 0.01200 0.00340 0.00580 0.00760 0.00755 0.01581 0.00869 0.10700 0.00023 0.00335

0.0028 0.0044 0.0015 0.0016 0.0026 0.0073 0.0010 0.0046 0.0065 0.0005 0.0046 0.0005 0.0026 0.0035 0.0186 0.0039 0.0019 0.0025 0.0055 0.0036 0.0041 0.0035 0.0186 0.0005 0.0027

0.0157 0.0674 0.0348 0.0255 0.0504 0.1400 0.0284 0.1230 0.0993 0.0050 0.0724 0.0323 0.0563 0.0912 0.1400 0.0351 0.0220 0.0355 0.0671 0.0416 0.0623 0.0924 2.0000 0.0050 0.0255

0.330 0.740 0.360 0.040 0.220 0.190 0.230 0.140 0.420 0.180 0.190 0.160 0.410 0.660 0.340 0.210 0.050 0.440 0.150 0.535 0.258 0.248 0.740 0.040 0.205

TKN mg/L 1.0 1.0 1.1 1.0 1.4 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.2 1.0 1.0

Total P mg/L 0.05 0.05 0.13 0.05 0.15 0.15 0.12 0.12 0.11 0.12 0.13 0.14 0.05 0.05 0.05 0.14 0.15 0.05 0.12 0.10

NO3 mg/L 0.23 0.23 0.54 0.45 0.22 0.35 0.23 0.19 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.19

1.0 2.6 1.1 1.0 1.2 2.5 2.3 3.3 2.5 1.5 1.8 1.0 1.0 1.4 1.0 1.0 1.0 1.2 4.0 1.8 1.7 1.4 4.0 1.0 1.0

0.10 0.48 0.16 0.14 0.05 0.50 0.20 0.44 0.52 0.44 0.30 0.19 0.38 0.46 0.50 0.42 0.26 0.34 0.64 0.29 0.35 0.22 0.64 0.05 0.15

0.34 0.26 0.26 0.36 0.30 0.29 0.33 0.18 0.37 0.34 0.46 0.26 0.37 0.74 0.40 0.24 0.28 0.37 0.49 0.30 0.36 0.27 0.74 0.10 0.26

NO2 +NO3 NO2 mg/L mg/L 0.24 0.10 0.23 0.10 0.10 0.56 0.10 0.45 0.10 0.23 0.10 0.37 0.24 0.10 0.10 0.20 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.19 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.19 0.10 0.10 0.10 0.10 0.12 0.10 0.10 0.11 0.10 0.19 0.10 0.10

954 1,180 859 782 1,030 1,330 864 848 980 970 862 1280 1,170 946 962 1,100 1130 1,050 1040 1,018

TSS mg/L 22.6 33.8 6.0 4.9 16.2 10.8 23.0 2.1 16.5 9.8 20.3 29.3 21.7 21.0 9.6 22.6 28.9 16.1 6.3 16.9

TVS mg/L 235.0 255.0 160.0 178.0 170.0 159.0 254.0 218.0 205.0 148.0 198.0 164.0 195.3

1,200 554 280 384 174 146 294 204 236 166 184 212 232 176 334 228 162 272 877 230 670 1,330 146 848

19.9 98.2 20.8 9.4 55.6 213.0 17.2 110.0 139.0 104.0 208.0 33.0 48.9 83.1 339.0 51.0 19.3 51.6 61.0 59.1 92.0 52.7 339.0 2.1 22.6

206.0 131.0 27.0 86.0 57.0 82.0 32.0 111.0 104.0 144.0 30.5 20.8 87.1 112.0 93.4 51.4 21.2 168.5 70.6 129.0 255.0 20.8 131.0

TDS mg/L

0.35 0.29 0.28 0.38 0.31 0.31 0.33 0.23 0.42 0.42 0.48 0.30 0.56 0.80 0.41 0.27 0.34 0.50 0.49 0.32 0.40 0.29 0.80 0.10 0.29

Note: Nitrate (NO3 ), Nitrite (NO2 ), and CBOD values may contain estimated unflagged data

-

Capitol Region Watershed District 2012 Monitoring Report 135

VSS mg/L 5 8 6 5 6

Hardness mg/L 584.0 607.0 393.0 436.0 533.0 662.0 563.0 490.0 549.0 540.0 529.0 651.0 605.0 591.0 613.0 653.0 609.0 621.0 591.0 569.5

33 33 11 33 5 6

529.0 177.0 117.0 138.0 82.0 86.5 68.4 135.0 104.0 12.1 83.1 84.7 102.0 103.0 106.0 180.0 99.4 76.3 143.0 353.0 101.2 348.6 662.0 12.1 414.5

CBOD mg/L 2.0 2.0 2.3 2.0 3.1 2.0 2.0 2.0 66.0 2.0 15.6 2.6 2.4 3.0 2.0 9.0 21.8 2.0 2.0 7.7

SO4 mg/L 56.2 50.6 46.7 51.7 73.2 96.7 58.8 48.2 50.6 49.7 46.0 81.4 80.2 51.3 52.3 70.7 75.8 75.2 65.3 62.1

2.0 9.0 72.4 11.8 6.5 20.3 10.4 5.1 2.9 13.8 5.0 6.0 4.3 94.0 5.5 21.0 12.4 94.0 2.0 3.1

54.6 31.0 17.2 21.8 9.9 7.8 7.5 15.4 10.2 10.1 9.5 10.5 11.0 13.6 9.7 15.9 8.9 7.1 11.9 42.8 11.6 38.5 96.7 7.1 46.4

Ca mg/L

Fl mg/L

Mg mg/L

0.1 0.1

139.0 161.0 153.0 151.0

44.3 49.2 50.9 48.1

0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

27.3 49.5 21.4 32.7 91.9 161.0 21.4 94.3

9.1 13.6 5.6 9.4 28.8 50.9 5.6 29.0

Actual value less than number (<) Reporting limit halved Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit Not collected

E. coli pH Std. Units mpn/100 mL 7.9 31 26 7.7 140 8.0 7.9 4,100 138 8.0 2,420 7.5 921 8.1 472 7.7 579 8.0 225 8.0 387 8.2 291 7.8 137 8.0 219 8.2 111 8.2 96 8.1 172 8.0 126 7.9 7.8 41 7.9 560 7.7 7.4 7.0 7.5 6.9 7.5 6.7 6.7 6.9 6.8 7.2 7.1 6.8 7.3 7.5 7.4 7.3 7.2 7.6 7.1 7.6 8.2 6.7 7.7

687 1,200 19,500 8,600 14,600 8,917 2,301 19,500 26 258


Capitol Region Watershed District 2012 Monitoring Report 136


Table 36. 2012 Trout Brook – East Branch Loading.

Sample Type Base Grab Snowmelt Grab Base Base Grab Snowmelt Snowmelt Base Snowmelt Grab Snowmelt Base Storm Base Grab Storm Base Storm Base Storm Base Storm Base Storm Composite Base Storm Composite Base Composite Storm Composite Storm Composite Storm Storm Composite Storm Base Composite Storm Composite Base Grab Storm Composite

Sample Collection Time Start Start Date End Date Time

End Time

TP (mg/L)

TSS (mg/L)

1/4/2012 1/26/2012

10:30 11:00

1/4/2012 1/26/2012

10:30 11:00

0.05 0.10

23 20

2/9/2012

8:20

2/9/2012

8:20

0.10 0.05

17 34

0.29 0.29 0.10 0.48 0.29 0.10 0.35 0.13 0.35 0.10 0.35 0.10 0.35 0.10 0.35 0.10 0.16 0.10 0.14 0.05

59 59 17 98 59 17 92 6 92 17 92 17 92 17 92 17 21 17 9 5 56 213 92 17 92 16 110 11 139

3/6/2012

14:35

3/6/2012

14:35

3/13/2012

9:35

3/13/2012

9:35

4/17/2012

23:54

4/18/2012

9:23

4/21/2012 4/23/2012 5/1/2012 5/3/2012

22:35 10:26 23:32 10:35

4/22/2012 4/24/2012 5/2/2012 5/3/2012

7:00 7:41 2:59 12:46

5/5/2012

15:24

5/5/2012

20:33

5/10/2012 5/19/2012 5/22/2012 5/23/2012

9:54 19:51 8:51 22:06

5/11/2012 5/20/2012 5/22/2012 5/24/2012

9:49 3:18 8:51 2:14

0.10 0.50 0.35 0.20 0.35 0.15 0.44 0.15 0.52

Loading Interval Start 1/1/12 0:00 1/26/12 7:30 1/27/12 1:10 2/2/12 14:10 2/28/12 17:30 2/29/12 9:10 3/3/12 7:50 3/6/12 11:00 3/7/12 4:20 3/8/12 6:30 3/12/12 0:10 3/13/12 8:00 3/19/12 20:20 3/20/12 17:40 3/22/12 10:30 3/24/12 15:00 4/2/12 23:40 4/3/12 21:20 4/15/12 1:40 4/17/12 9:50 4/17/12 22:40 4/19/12 3:00 4/21/12 14:20 4/23/12 8:10 5/1/12 22:00 5/3/12 3:40 5/4/12 7:00 5/5/12 14:40 5/6/12 2:30 5/7/12 14:20 5/19/12 19:40 5/20/12 13:30 5/23/12 21:00

End

Interval Volume (cf)

1/26/12 7:20 1/27/12 1:00 2/2/12 14:00 2/28/12 17:20

1,787,210 64,403 504,031 2,065,995

2/29/12 9:00 3/3/12 7:40 3/6/12 10:50 3/7/12 4:10 3/8/12 6:20 3/12/12 0:00 3/13/12 7:50 3/19/12 20:10 3/20/12 17:30 3/22/12 10:20 3/24/12 14:50 4/2/12 23:30 4/3/12 21:10 4/15/12 1:30 4/15/12 22:50 4/17/12 22:30 4/19/12 2:50 4/21/12 14:10 4/23/12 8:00 5/1/12 21:50 5/3/12 3:30 5/4/12 6:50 5/5/12 14:30 5/6/12 2:20 5/7/12 14:10 5/19/12 19:30 5/20/12 13:20 5/23/12 20:50 5/26/12 10:10

495,220 832,733 288,932 395,885 275,177 419,236 358,177 644,319 604,359 179,875 312,218 822,699 212,152 894,074 556,585 46,925 264,227 207,840 268,319 689,897 500,647 619,611 140,225 276,958 824,018 1,051,210 246,070 266,740 2,301,302

Capitol Region Watershed District 2012 Monitoring Report 137

Interval TP (lb) 5.58 0.40 3.15 6.45 8.97 15.08 1.80 11.86 4.98 2.62 7.83 5.23 13.20 1.12 6.82 5.14 4.64 5.58 12.16 0.29 2.64 1.30 2.35 2.15 3.13 19.34 3.06 3.46 18.00 9.84 6.76 2.50 74.70

Interval TSS (lb) 2,521 80 532 4,359 1,827 3,072 305 2,427 1,015 442 2,057 241 3,471 190 1,793 868 1,218 943 3,197 50 343 219 157 211 1,738 8,239 805 297 4,733 1,063 1,690 180 19,969


Storm Storm Base Composite Storm Base Storm Base Storm Composite Base Storm Composite Storm Composite Storm Storm Base Grab Base Composite Storm Composite Base Storm Composite Storm Base Composite Storm Composite Base Storm Base Storm Composite Base Storm Composite Base Composite Storm Composite Base Composite Storm Base Composite Base Composite Base Composite Base Composite Storm Composite Base Composite Storm

6/4/2012

9:38

6/4/2012

21:24

6/10/2012

22:25

6/11/2012

4:33

6/14/2012 6/16/2012

10:23 10:26

6/14/2012 6/16/2012

13:57 19:19

6/22/2012 7/2/2012 7/6/2012

9:55 10:05 23:18

6/22/2012 7/3/2012 7/7/2012

9:55 2:42 6:09

7/13/2012

4:38

7/13/2012

10:50

7/16/2012 7/18/2012

10:10 10:55

7/17/2012 7/18/2012

8:49 12:47

7/24/2012

6:37

7/24/2012

19:39

7/29/2012 7/31/2012 8/3/2012 8/13/2012

0:13 10:51 23:45 9:59

7/29/2012 8/1/2012 8/4/2012 8/14/2012

12:21 9:30 5:22 9:08

8/27/2012 9/10/2012 9/24/2012 10/10/2012 10/25/2012 10/30/2012

10:33 10:46 10:25 10:54 5:52 9:57

8/28/2012 9/11/2012 9/25/2012 10/11/2012 10/25/2012 10/31/2012

8:05 8:37 9:00 8:58 12:02 8:47

0.35 0.35 0.12 0.35 0.10 0.35 0.10 0.44 0.10 0.30 0.19 0.35 0.35 0.12 0.11 0.38 0.10 0.46 0.35 0.12 0.50 0.10 0.35 0.10 0.42 0.10 0.26 0.13 0.34 0.14 0.35 0.05 0.05 0.05 0.14 0.64 0.15 0.35

92 92 23 92 17 92 17 104 17 208 33 92 92 2 17 49 17 83 92 10 339 17 92 17 51 17 19 20 52 29 92 22 21 10 23 61 29 92

5/26/12 10:20 5/27/12 20:00 5/29/12 0:20 6/6/12 9:30 6/6/12 11:30 6/6/12 19:10 6/7/12 17:30 6/10/12 21:20 6/12/12 2:00 6/14/12 10:00 6/15/12 9:40 6/17/12 23:30 6/19/12 4:30 6/22/12 1:10 6/30/12 16:40 7/6/12 18:30 7/8/12 16:40 7/13/12 4:00 7/13/12 17:30 7/15/12 13:50 7/18/12 2:20 7/19/12 23:10 7/21/12 6:40 7/23/12 14:50 7/24/12 5:00 7/26/12 4:50 7/28/12 23:20 7/31/12 0:20 8/3/12 23:30 8/5/12 15:40 8/15/12 8:40 8/16/12 16:10 9/4/12 17:10 9/19/12 4:10 10/4/12 13:10 10/24/12 17:00 10/27/12 5:30 11/11/12 0:20

5/27/12 19:50 5/29/12 0:10 6/6/12 9:20 6/6/12 11:20 6/6/12 19:00 6/7/12 17:20 6/10/12 21:10 6/12/12 1:50 6/14/12 9:50 6/15/12 9:30 6/17/12 23:20 6/19/12 4:20 6/22/12 1:00 6/30/12 16:30 7/6/12 18:20 7/8/12 16:30 7/13/12 3:50 7/13/12 17:20 7/15/12 13:40 7/18/12 2:10 7/19/12 23:00 7/21/12 6:30 7/23/12 14:40 7/24/12 4:50 7/26/12 4:40 7/28/12 23:10 7/31/12 0:10 8/3/12 23:20 8/5/12 15:30 8/15/12 8:30 8/16/12 16:00 9/4/12 17:00 9/19/12 4:00 10/4/12 13:00 10/24/12 16:50 10/27/12 5:20 11/11/12 0:10 11/11/12 16:20

Capitol Region Watershed District 2012 Monitoring Report 138

504,204 465,010 926,129 22,536 19,352 124,233 196,866 326,324 193,058 710,512 354,786 455,520 638,329 685,413 400,307 329,884 314,471 265,054 348,872 185,035 706,583 105,192 742,565 38,468 259,387 176,254 429,026 259,276 394,624 807,345 173,510 1,610,890 969,247 1,162,284 1,589,785 496,327 1,164,381 127,814

11.02 10.16 6.94 0.49 0.12 2.71 1.23 8.96 1.21 13.31 4.21 9.95 13.95 5.13 2.75 7.83 1.96 7.61 7.62 1.39 22.05 0.66 16.22 0.24 6.80 1.10 6.96 2.10 8.38 7.06 3.79 5.03 3.03 3.63 13.89 19.83 10.90 2.79

2,896 2,671 1,330 129 20 713 208 2,119 204 9,226 731 2,616 3,666 90 412 1,007 332 1,375 2,004 113 14,953 111 4,265 41 826 186 517 329 1,271 1,477 997 2,182 1,271 697 2,243 1,890 2,101 734


Base Grab Snowmelt Base Grab

11/29/2012

10:40

11/29/2012

10:40

12/21/2012

10:25

12/21/2012

10:25

Snowmelt Flow-Weighted Average Storm Flow-Weighted Average Base Flow-Weighted Average Total Flow-Weighted Average

0.05 0.29 0.12

16 59 6

0.32 0.38 0.09 0.21

64 109 19 54

11/14/12 0:00 12/15/12 3:50 12/17/12 21:50

12/15/12 3:40 12/17/12 21:40 12/31/12 23:50

2,957,722 432,978 1,005,579

9.23 7.84 7.53

2,973 1,597 395

Snowmelt Subtotal Storm Subtotal Base Subtotal Total

2,496,397 15,359,967 24,636,038 42,492,402

49 363 138 550

10,019 104,312 28,837 143,168

Note: Italics indicate estimated concentrations based on average base, snowmelt and storm flow concentrations.

Capitol Region Watershed District 2012 Monitoring Report 139


Capitol Region Watershed District 2012 Monitoring Report 140


Table 37. 2005-2012 Trout Brook Outlet Monitoring Results. Subwatershed Area (ac) Total Rainfall (inches) Number of Monitoring Days Number of Storm Sampling Events Number of Storm Intervals Number of Snowmelt Sampling Events Number of Snowmelt Intervals Number of Base Sampling Events Number of Baseflow Intervals Total Discharge (cf) Storm Flow Subtotal (cf) Snowmelt Flow Subtotal (cf) Baseflow Subtotal (cf) Average TSS Concentration (mg/L) Total FWA TSS Concentration (mg/L) Storm FWA TSS Concentration (mg/L) Snowmelt FWA TSS Concentration (mg/L) Base FWA TSS Concentration (mg/L) Total TSS Loading (lbs) Storm TSS Loading (lbs) Snowmelt TSS Loading (lbs) Base TSS Loading (lbs) Total TSS Yield (lb/ac) Normalized Total TSS Yield (lb/ac/in runoff) Average TP Concentration (mg/L) Total FWA TP Concentration (mg/L) Storm FWA TP Concentration (mg/L) Snowmelt FWA TP Concentration (mg/L) Base FWA TP Concentration (mg/L) Total TP Loading (lbs) Storm TP Loading (lbs) Snowmelt TP Loading (lbs) Base TP Loading (lbs) Total TP Yield (lb/ac) Normalized Total TP Yield (lb/ac/in runoff)

2005 5,028 29.28 198 23 15

2006 5,028 24.67 210 21 40

2007 5,028 24.23 226 19 38

2008 5,028 15.54 198 14 26

2009 5,028 20.95 276 23 33

2010 5,028 36.32 364 24 52

5 33 292,595,899 80,113,383

18 43 438,485,575 88,748,004

10 29 388,392,876 133,852,477

14 25 279,271,142 88,336,642

16 25 356,849,169 113,482,177

14 32 496,585,344 180,006,459

212,482,516 311 71 201

349,737,571 141 50 199

254,540,399 198 102 285

190,934,500 82 60 175

243,366,992 104 56 159

316,578,885 156 82 211

20 1,306,755 1,054,690

12 1,363,229 1,104,384

6 2,474,834 2,377,790

8 1,054,580 963,965

8 1,143,682 1,027,807

9 2,557,705 2,374,988

252,065 320 20 0.508 0.151 0.342

258,845 271 11 0.260 0.130 0.390

97,044 492 23 0.300 0.180 0.410

90,615 210 14 0.200 0.163 0.394

115,875 227 12 0.275 0.163 0.406

182,717 509 19 0.307 0.178 0.399

0.074 2,698 1,742

0.070 3,630 2,155

0.050 4,249 3,438

0.056 2,845 2,175

0.050 3,638 2,874

0.053 5,529 4,482

956 0.697 0.043

1,476 0.722 0.030

811 0.845 0.040

670 0.568 0.037

764 0.724 0.037

1,047 1.100 0.040

Capitol Region Watershed District 2012 Monitoring Report 141

2011 5,028 24.53 344 6 20 3 6 13 24 533,045,947 126,247,447 69,637,200 337,161,300 47 45 129 43 13 1,484,552 1,013,270 187,628 283,654 295 10 0.151 0.145 0.300 0.221 0.072 4,831 2,366 959 1,505 0.961 0.033

2012 5,028 30.26 359 18 48 1 4 20 40 481,542,037 167,030,961 3,307,320 311,203,756 54 43 97 123 13 1,281,255 1,012,503 25,491 248,311 255 10 0.175 0.138 0.275 0.414 0.062 4,162 2,864 85 1,212 0.828 0.031


Figure 46. 2012 Trout Brook Outlet Level, Discharge, and Rainfall. Capitol Region Watershed District 2012 Monitoring Report 142


Table 38. Trout Brook Outlet Laboratory Data. Trout Brook Outlet Sample Type Base Grab Base Grab Base Grab Base Grab Base Composite Base Grab Base Grab Base Composite Base Grab Base Grab Base Composite Base Grab Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Grab

Snowmelt Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Grab Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Grab Storm Grab Storm Composite Storm Composite

Sampling Start Date/Time 01/04/2012 12:00 02/09/2012 09:15 03/13/2012 08:55 03/19/2012 10:45 04/23/2012 09:47 04/24/2012 10:00 05/10/2012 10:50 05/10/2012 12:02 05/22/2012 09:15 06/04/2012 10:55 06/04/2012 11:14 06/22/2012 10:50 07/02/2012 10:15 07/02/2012 10:48 07/16/2012 10:00 07/16/2012 10:21 07/31/2012 10:50 07/31/2012 11:04 08/13/2012 10:14 08/13/2012 10:29 08/27/2012 10:22 08/27/2012 10:41 09/10/2012 11:00 09/10/2012 11:18 09/24/2012 10:05 09/24/2012 10:25 10/10/2012 11:15 10/10/2012 11:31 10/30/2012 10:20 10/30/2012 10:16 11/29/2012 11:30 12/21/2012 11:15

01/26/2012 12:45 05/01/2012 23:02 05/03/2012 10:33 05/05/2012 15:10 05/06/2012 02:56 05/19/2012 19:46 05/24/2012 08:50 05/25/2012 10:22 06/10/2012 21:30 06/14/2012 10:40 06/14/2012 10:23 06/16/2012 09:49 07/06/2012 19:19 07/13/2012 04:26 07/18/2012 02:44 07/18/2012 10:33 07/24/2012 09:22 07/24/2012 06:08 07/29/2012 06:41 08/03/2012 23:42 08/15/2012 09:40 10/25/2012 11:30 10/25/2012 05:21 11/11/2012 00:31

Sampling End Date/Time 01/04/2012 12:00 02/09/2012 09:15 03/13/2012 08:55 03/19/2012 10:45 04/24/2012 08:36 04/24/2012 10:00 05/10/2012 10:50 05/11/2012 08:58 05/22/2012 09:15 06/04/2012 10:55 06/05/2012 08:50 06/22/2012 10:50 07/02/2012 10:15 07/03/2012 02:32 07/16/2012 10:00 07/17/2012 09:05 07/31/2012 10:50 08/01/2012 09:05 08/13/2012 10:14 08/14/2012 08:40 08/27/2012 10:22 08/28/2012 07:53 09/10/2012 11:00 09/11/2012 09:07 09/24/2012 10:05 09/25/2012 09:44 10/10/2012 11:15 10/11/2012 09:34 10/30/2012 10:20 10/31/2012 09:17 11/29/2012 11:30 12/21/2012 11:15 Base Average

Ortho-P mg/L 0.027 0.010 0.025 0.027 0.010 0.026 0.034 0.024 0.048 0.021 0.032 0.034 0.022 0.023 0.010 0.010 0.010 0.028 0.021 0.027 0.023

Cl mg/L 199.0 168.0 136.0 152.0 137.0 138.0 155.0 143.0 109.0 140.0 141.0 145.0 162.0 151.0 152.0 137.0 142.0 144.0 157.0 160.0 148.4

Cd mg/L 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000100 0.000080 0.000080 0.000096 0.000110 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000083

Cr mg/L 0.00075 0.00220 0.00085 0.00050 0.00120 0.00054 0.00050 0.00110 0.00056 0.00140 0.00170 0.00100 0.00200 0.00100 0.00100 0.00084 0.00081 0.00082 0.00210 0.00130 0.00111

Cu mg/L 0.0018 0.0039 0.0023 0.0021 0.0026 0.0022 0.0015 0.0017 0.0013 0.0039 0.0017 0.0022 0.0021 0.0023 0.0022 0.0020 0.0017 0.0019 0.0037 0.0021 0.0023

Pb mg/L 0.00066 0.00340 0.00100 0.00040 0.00510 0.00180 0.00071 0.00440 0.00056 0.00110 0.00052 0.00083 0.00074 0.00380 0.00086 0.00150 0.00130 0.00160 0.00480 0.00140 0.00182

01/26/2012 12:45 05/02/2012 07:22 05/03/2012 14:38 05/05/2012 17:40 05/06/2012 05:17 05/19/2012 22:34 05/24/2012 08:50 05/25/2012 10:22 06/11/2012 04:13 06/14/2012 10:40 06/14/2012 16:39 06/16/2012 21:11 07/07/2012 06:12 07/13/2012 10:23 07/18/2012 06:22 07/18/2012 16:42 07/24/2012 09:22 07/24/2012 17:07 07/29/2012 17:04 08/04/2012 08:12 08/15/2012 09:40 10/25/2012 11:30 10/25/2012 13:34 11/11/2012 05:13 Snowmelt Average Storm Average Annual Average Annual Maximum Annual Minimum Annual Median

0.010 0.037 0.025 0.066 0.028 0.010 0.028 0.044 0.035 0.061 0.024 0.050 0.082 0.200 0.010 0.053 0.034 0.200 0.010 0.010

735.0 43.7 37.1 36.2 30.5 37.1 89.5 54.2 27.9 54.8 50.7 46.9 49.6 27.4 57.5 47.8 48.3 41.3 57.0 735.0 46.5 116.4 735.0 27.4 27.4

0.000110 0.000089 0.000290 0.000080 0.000130 0.000320 0.000640 0.000120 0.000160 0.000080 0.000450 0.000220 0.000300 0.000180 0.000090 0.000080 0.000210 0.000210 0.000450 0.000110 0.000228 0.000151 0.000640 0.000080 0.000080

0.00200 0.00280 0.00790 0.00500 0.00410 0.00840 0.00089 0.00280 0.00570 0.00210 0.00410 0.00500 0.00760 0.00720 0.00280 0.00160 0.00420 0.00610 0.01050 0.00200 0.00493 0.00290 0.01050 0.00050 0.00050

0.0045 0.0080 0.0187 0.0082 0.0119 0.0286 0.0068 0.0106 0.0106 0.0046 0.0160 0.0143 0.0229 0.0144 0.0052 0.0031 0.0125 0.0170 0.0352 0.0045 0.0138 0.0076 0.0352 0.0013 0.0013

0.00210 0.00900 0.02940 0.00990 0.02390 0.02900 0.00200 0.00850 0.01260 0.00340 0.01140 0.01190 0.02180 0.02360 0.00340 0.00190 0.01340 0.01350 0.03400 0.00210 0.01459 0.00772 0.03400 0.00040 0.00040

3.78

Ni mg/L 0.00140 0.00180 0.00120 0.00110 0.00140 0.00120 0.00130 0.00110 0.00085 0.00180 0.00180 0.00270 0.00150 0.00050 0.00050 0.00140 0.00150 0.00120 0.00430 0.00170 0.00151

Zn mg/L 0.0077 0.0152 0.0094 0.0088 0.0188 0.0183 0.1140 0.0090 0.0050 0.1820 0.0094 0.0113 0.0123 0.0097 0.0093 0.0110 0.0087 0.0099 0.0181 0.0096 0.0249

NH3 mg/L 0.24 0.34 0.40 0.35 0.04 0.28 0.26 0.26 0.30 0.16 0.18 0.10 0.16 1.00 0.20 0.16 0.20 0.28 0.30 0.33 0.28

2.61 2.62 2.62 3.00 3.78 2.61 2.61

0.00190 0.00210 0.00560 0.00150 0.00280 0.00660 0.00140 0.00050 0.00280 0.00050 0.00340 0.00360 0.00660 0.00520 0.00250 0.00120 0.00340 0.00480 0.00850 0.00190 0.00350 0.00244 0.00850 0.00050 0.00050

0.0238 0.0418 0.0937 0.0416 0.0532 0.1520 0.0540 0.0488 0.0521 0.0211 0.0704 0.0868 0.1320 0.0572 0.0242 0.0150 0.0631 0.0785 0.1910 0.0238 0.0709 0.0461 0.1910 0.0050 0.0050

0.62 0.04 0.16 0.20 0.13 0.11 0.22 0.08 0.18 0.12 0.19 0.66 0.44 0.20 0.09 0.04 0.29 0.14 0.33 0.62 0.20 0.25 1.00 0.04 0.04

K mg/L 3.78 -

TKN mg/L 1.0 1.6 1.0 1.0 1.0 1.1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.1 1.0 1.0

Total P mg/L 0.05 0.05 0.11 0.10 0.05 0.05 0.11 0.05 0.11 0.05 0.05 0.11 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.13 0.07

NO3 mg/L 0.86 0.95 0.71 0.85 0.80 1.00 0.65 0.64 0.64 0.39 0.10 0.43 0.16 0.50 0.19 0.25 0.23 0.29 0.27 0.26 0.51

1.2 1.1 2.2 2.4 1.8 4.1 1.0 1.5 1.5 1.0 1.0 1.2 1.3 1.0 1.0 1.0 1.0 4.0 1.2 1.2 1.6 1.3 4.1 1.0 1.0

0.12 0.13 0.34 0.19 0.28 0.34 0.16 0.25 0.19 0.14 0.28 0.43 0.81 0.27 0.16 0.15 0.29 0.30 0.61 0.12 0.30 0.17 0.81 0.05 0.05

0.96 0.41 0.36 0.39 0.33 0.33 0.33 0.56 0.43 0.36 0.53 0.82 0.82 0.42 0.46 0.45 0.42 0.46 0.96 0.46 0.50 1.00 0.10 0.10

NO2 NO2 +NO3 mg/L mg/L 0.10 0.89 0.10 0.96 0.10 0.74 0.10 0.85 0.10 0.82 0.10 1.10 0.10 0.68 0.10 0.68 0.10 0.69 0.10 0.44 0.10 0.13 0.10 0.47 0.10 0.21 0.10 0.54 0.10 0.25 0.10 0.31 0.10 0.28 0.10 0.31 0.10 0.28 0.10 0.27 0.10 0.55 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.12 0.10 0.10 0.10 0.10 0.12 0.10 0.10

TDS mg/L

0.99 0.43 0.39 0.42 0.34 0.36 0.36 0.59 0.46 0.39 0.61 0.89 0.89 0.45 0.49 0.49 0.53 0.46 0.99 0.50 0.54 1.10 0.13 0.13

669 633 478 589 485 480 557 516 464 572 536 504 632 595 597 523 561 554 577 574 555

9.0 50.1 10.1 3.3 17.8 11.3 5.4 10.2 5.5 10.2 5.2 12.4 6.6 4.0 9.0 10.2 6.6 12.3 18.1 18.3 11.8

TVS mg/L 131.0 91.0 119.0 128.0 143.0 87.3 108.0 155.0 102.0 154.0 107.0 117.0 159.0 123.2

1,510 160 134 152 116 160 289 242 132 208 44 204 222 140 276 225 204 182 252 1,510 186 409 1,510 44 44

23.4 52.0 195.0 42.8 97.4 288.0 12.9 70.9 114.0 23.8 84.4 113.0 157.0 105.0 27.4 14.3 77.2 94.6 269.0 23.4 102.2 53.8 288.0 3.3 3.3

153.0 10.0 86.0 107.0 77.4 128.0 101.0 112.0 4.5 82.9 78.3 62.3 96.1 43.5 33.4 153.0 73.0 99.2 159.0 4.5 4.5

Note: Nitrate (NO3 ), Nitrite (NO2 ), and CBOD values may contain estimated unflagged data

-

Capitol Region Watershed District 2012 Monitoring Report 143

TSS mg/L

VSS mg/L 5 10 7 6 7

Hardness mg/L 411.0 323.0 291.0 368.0 290.0 276.0 345.0 334.0 284.0 342.0 334.0 349.0 389.0 373.0 395.0 119.0 382.0 353.0 461.0 319.0 336.9

45 110 78 31 110 5 5

402.0 101.0 97.8 80.5 73.8 111.0 151.0 120.0 73.5 114.0 126.0 117.0 150.0 88.1 143.0 116.0 130.0 145.0 207.0 402.0 119.2 238.1 461.0 73.5 73.5

CBOD mg/L 2.0 2.0 2.0 2.0 5.2 2.6 2.0 3.5 2.0 5.4 2.0 2.9 2.0 2.0 2.1 2.0 78.8 2.3 2.0 2.1 6.3

SO4 mg/L 65.3 61.8 40.1 57.4 47.1 41.7 52.6 54.0 40.0 52.1 53.0 47.9 62.0 66.6 69.9 56.4 56.6 59.7 69.6 69.6 56.2

4.5 5.9 7.1 63.4 13.7 4.7 3.2 14.5 25.8 3.7 5.9 3.7 25.7 4.5 14.8 9.4 78.8 2.0 2.0

63.3 13.6 9.3 9.8 7.3 11.1 20.9 18.6 9.2 17.6 18.2 16.4 18.8 8.9 20.6 17.1 17.1 13.5 21.1 63.3 15.0 37.3 69.9 7.3 7.3

Fl mg/L

Ca mg/L

Mg mg/L

0.3 0.3

92.4 99.3 104.0 98.6

28.6 30.3 32.5 30.5

0.1 0.16 0.13 0.19 0.3 0.1 0.1

40.5 24.0 39.2 35.2 34.7 62.1 104.0 24.0 24.0

12.0 6.8 11.1 10.1 10.0 18.8 32.5 6.8 6.8

Actual value less than number (<) Reporting limit halved Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit Not collected

pH E. coli Std. Units mpn/100mL 7.7 397 7.8 233 8.1 161 8.0 66 7.7 56 199 8.0 8.0 548 123 7.7 7.6 118 178 7.9 228 8.0 142 8.3 210 7.8 133 8.1 579 8.2 345 8.2 186 7.8 649 8.2 8.0 133 7.9 687 8.0 269 7.7 7.2 7.9 7.5 7.4 6.4 7.6 7.2 6.8 7.3 7.1 6.7 7.0 7.2 7.4 7.8 7.4 7.2 7.1 7.7 7.2 7.6 8.3 6.4 6.4

2,000 16,100 4,100 104,600 13,400 28,040 5,823 104,600 56 56


Capitol Region Watershed District 2012 Monitoring Report 144


Table 39. Trout Brook Outlet Loading.

Sample Type Base Grab Snowmelt Base Snowmelt Grab Base Snowmelt Base Grab Storm Base Storm Base Storm Storm Storm Base Storm Base Snowmelt Storm Base Storm Base Storm Base Grab Base Grab Storm Base Storm Base Storm Base Storm Storm

Sample Collection Time Start Start Date End Date Time 1/4/2012

12:00

1/4/2012

End Time 12:00

1/26/2012

12:45

1/26/2012

12:45

2/9/2012

9:15

2/9/2012

9:15

3/13/2012 3/19/2012

8:55 10:45

3/13/2012 3/19/2012

8:55 10:45

TP (mg/L)

TSS (mg/L)

0.05

9

0.12 0.07 0.12 0.07 0.12 0.05

23 12 23 12 23 50 102 12 102 12 102 102 102 12 102 12 23 102 12 102 12 102 10 3 102 12 102 12 102 12 102 102

0.30 0.07 0.30 0.07 0.30 0.30 0.30 0.07 0.30 0.07 0.12 0.30 0.07 0.30 0.07 0.30 0.11 0.10 0.30 0.07 0.30 0.07 0.30 0.07 0.30 0.30

Loading Interval Start 1/1/12 0:00 1/6/12 12:20 1/7/12 0:20 1/26/12 12:00 1/27/12 3:50 1/31/12 12:40 1/31/12 23:40 2/20/12 23:00 2/21/12 20:20 2/22/12 11:40 2/22/12 19:00 2/28/12 18:00 2/29/12 8:20 3/1/12 9:10 3/2/12 0:20 3/2/12 10:00 3/2/12 23:10 3/6/12 11:00 3/7/12 3:40 3/8/12 4:00 3/10/12 12:20 3/10/12 22:20 3/12/12 0:00 3/13/12 1:10 3/16/12 0:10 3/19/12 20:30 3/20/12 23:30 3/22/12 18:40 3/26/12 0:50 4/3/12 0:00 4/4/12 10:30 4/15/12 1:50 4/15/12 19:40

End

Interval Volume (cf)

1/6/12 12:10

3,811,920

1/7/12 0:10 1/26/12 11:50 1/27/12 3:40 1/31/12 12:30 1/31/12 23:30 2/20/12 22:50 2/21/12 20:10 2/22/12 11:30 2/22/12 18:50 2/28/12 17:50 2/29/12 8:10 3/1/12 9:00 3/2/12 0:10 3/2/12 9:50 3/2/12 23:00 3/6/12 10:50 3/7/12 3:30 3/8/12 3:50 3/10/12 12:10 3/10/12 22:10 3/11/12 23:50 3/13/12 1:00 3/16/12 0:00 3/19/12 20:20 3/20/12 23:20 3/22/12 18:30 3/26/12 0:40 4/2/12 23:50 4/4/12 10:20 4/15/12 1:40 4/15/12 19:30 4/17/12 2:10

431,722 13,106,400 582,838 3,140,080 455,590 14,579,600 816,478 487,015 278,781 4,397,470 2,075,090 2,474,150 1,239,130 448,235 1,014,670 4,259,580 1,837,170 1,899,870 2,484,710 673,909 1,296,726 3,020,770 5,273,510 6,274,640 3,449,870 2,517,710 4,755,570 8,562,940 2,342,370 11,426,400 2,439,930 3,564,000

Capitol Region Watershed District 2012 Monitoring Report 145

Interval TP (lb) 11.90 3.23 57.27 4.37 13.72 3.41 45.51 15.29 2.13 5.22 19.22 38.86 46.34 23.21 1.96 19.00 18.61 13.76 35.58 10.86 12.62 5.67 56.57 36.21 39.17 64.61 11.00 89.06 37.42 43.87 49.93 45.69 66.75

Interval TSS (lb) 2,142 631 9,655 851 2,313 666 45,598 5,209 359 1,779 3,239 13,239 15,785 7,906 330 6,474 3,138 2,684 12,121 1,830 4,300 955 19,272 3,325 1,293 22,010 1,855 30,340 6,308 14,944 8,417 15,567 22,738


Base Storm Storm Base Storm Base Composite Storm Base Storm Composite Storm Composite Storm Composite Storm Composite Storm Base Composite Storm Composite Base Grab Storm Storm Grab Storm Storm Storm Storm Base Composite Storm Base Storm Composite Base Storm Composite Base Storm Composite Base Storm Storm Base Grab Base Composite Storm Composite Base Storm Composite

4/23/2012

9:47

4/24/2012

8:36

5/1/2012 5/3/2012 5/5/2012 5/6/2012

23:02 10:33 15:10 2:56

5/2/2012 5/3/2012 5/5/2012 5/6/2012

7:22 14:38 17:40 5:17

5/10/2012 5/19/2012 5/22/2012

12:02 19:46 9:15

5/11/2012 5/19/2012 5/22/2012

8:58 22:34 9:15

5/25/2012

10:22

5/25/2012

10:22

6/4/2012

11:14

6/5/2012

8:50

6/10/2012

21:30

6/11/2012

4:13

6/14/2012

10:23

6/14/2012

16:39

6/16/2012

9:49

6/16/2012

21:11

6/22/2012 7/2/2012 7/6/2012

10:50 10:48 19:19

6/22/2012 7/3/2012 7/7/2012

10:50 2:32 6:12

7/13/2012

4:26

7/13/2012

10:23

0.07 0.30 0.30 0.07 0.30 0.05 0.30 0.07 0.13 0.34 0.19 0.28 0.30 0.05 0.34 0.11 0.30 0.16 0.30 0.30 0.30 0.30 0.05 0.30 0.07 0.25 0.07 0.19 0.07 0.14 0.07 0.30 0.30 0.11 0.05 0.28 0.07 0.43

12 102 102 12 102 18 102 12 52 195 43 97 102 11 288 5 102 13 102 102 102 102 10 102 12 71 12 114 12 24 12 102 102 6 10 84 12 113

4/17/12 2:20 4/17/12 23:10 4/18/12 13:30 4/19/12 12:40 4/21/12 21:10 4/23/12 9:30 4/25/12 2:50 4/25/12 15:30 5/1/12 22:00 5/3/12 10:20 5/5/12 14:10 5/6/12 2:30 5/8/12 12:00 5/10/12 10:50 5/19/12 19:40 5/21/12 0:20 5/23/12 21:00 5/24/12 14:10 5/25/12 13:00 5/26/12 10:20 5/27/12 20:30 5/27/12 23:20 5/31/12 3:10 6/6/12 19:10 6/8/12 0:50 6/10/12 21:20 6/11/12 20:50 6/14/12 9:50 6/15/12 12:00 6/16/12 9:40 6/17/12 5:30 6/17/12 23:30 6/19/12 4:00 6/22/12 10:50 6/26/12 19:30 7/6/12 18:50 7/10/12 19:30 7/13/12 4:00

4/17/12 23:00 4/18/12 13:20 4/19/12 12:30 4/21/12 21:00 4/23/12 9:20 4/25/12 2:40 4/25/12 15:20 5/1/12 21:50 5/3/12 10:10 5/5/12 14:00 5/6/12 2:20 5/8/12 11:50 5/10/12 10:40 5/19/12 19:30 5/21/12 0:10 5/23/12 20:50 5/24/12 14:00 5/25/12 12:50 5/26/12 10:10 5/27/12 20:20 5/27/12 23:10 5/31/12 3:00 6/6/12 19:00 6/8/12 0:40 6/10/12 21:10 6/11/12 20:40 6/14/12 9:40 6/15/12 11:50 6/16/12 9:30 6/17/12 5:20 6/17/12 23:20 6/19/12 3:50 6/22/12 10:40 6/26/12 19:20 7/6/12 18:40 7/10/12 19:20 7/13/12 3:50 7/13/12 17:30

Capitol Region Watershed District 2012 Monitoring Report 146

1,456,980 1,599,630 2,000,190 3,450,880 2,989,530 2,564,360 991,469 9,267,520 4,115,440 6,663,630 1,845,790 8,792,810 4,329,630 12,705,500 2,677,470 3,880,060 6,365,580 5,441,820 3,011,930 5,188,120 372,303 8,907,300 10,543,300 2,488,020 4,068,070 2,288,010 3,572,540 4,055,270 1,772,670 2,598,900 1,553,810 4,358,820 9,454,290 6,541,340 13,467,100 6,588,700 2,755,410 1,628,480

6.37 29.96 37.46 15.08 55.99 8.00 18.57 40.50 33.40 141.43 21.89 153.69 81.08 39.66 56.83 26.64 119.21 54.35 56.41 97.16 6.97 166.81 32.91 46.60 17.78 35.71 15.61 48.10 7.75 22.71 6.79 81.63 177.06 44.92 42.03 115.17 12.04 43.71

1,073 10,206 12,761 2,542 19,073 2,849 6,326 6,827 13,359 81,117 4,932 53,463 27,623 8,963 48,138 1,308 40,612 4,382 19,216 33,100 2,375 56,828 6,713 15,873 2,997 10,127 2,632 28,860 1,306 3,861 1,145 27,809 60,318 2,246 8,575 34,714 2,030 11,488


Storm Base Composite Storm Composite Storm Composite Storm Composite Base Storm Composite Base Composite Storm Composite Base Composite Storm Base Composite Base Composite Base Composite Base Composite Storm Composite Base Composite Storm Composite Base Grab Storm Base Grab Snowmelt Flow-Weighted Average Storm Flow-Weighted Average Base Flow-Weighted Average Total Flow-Weighted Average

7/16/2012 7/18/2012 7/18/2012 7/24/2012

10:21 2:44 10:33 6:08

7/17/2012 7/18/2012 7/18/2012 7/24/2012

9:05 6:22 16:42 17:07

7/29/2012 7/31/2012 8/3/2012 8/13/2012

6:41 11:04 23:42 10:29

7/29/2012 8/1/2012 8/4/2012 8/14/2012

17:04 9:05 8:12 8:40

8/27/2012 9/10/2012 9/24/2012 10/10/2012 10/25/2012 10/30/2012 11/11/2012 11/29/2012

10:41 11:18 10:25 11:31 5:21 10:16 0:31 11:30

8/28/2012 9/11/2012 9/25/2012 10/11/2012 10/25/2012 10/31/2012 11/11/2012 11/29/2012

7:53 9:07 9:44 9:34 13:34 9:17 5:31 11:30

12/21/2012

11:15

12/21/2012

11:15

0.30 0.05

0.30 0.13

102 5 157 105 27 12 14 12 77 7 102 4 9 10 7 95 12 269 18 102 18

0.41 0.27 0.06 0.14

123 97 13 43

0.81 0.27 0.16 0.07 0.15 0.05 0.29 0.05 0.30 0.05 0.05 0.05 0.05 0.30 0.05 0.61 0.05

7/13/12 17:40 7/16/12 10:20 7/18/12 2:40 7/18/12 10:20 7/24/12 4:40 7/27/12 3:40 7/29/12 5:10 7/30/12 6:20 8/3/12 23:30 8/5/12 3:50 8/15/12 8:20 8/16/12 15:20 9/3/12 21:00 9/17/12 15:40 10/2/12 13:30 10/25/12 5:00 10/25/12 20:20 11/11/12 0:10 11/11/12 17:00 12/14/12 19:00 12/17/12 7:10

7/16/12 10:10 7/18/12 2:30 7/18/12 10:10 7/24/12 4:30 7/27/12 3:30 7/29/12 5:00 7/30/12 6:10 8/3/12 23:20 8/5/12 3:40 8/15/12 8:10 8/16/12 15:10 9/3/12 20:50 9/17/12 15:30 10/2/12 13:20 10/25/12 4:50 10/25/12 20:10 11/11/12 0:00 11/11/12 16:50 12/14/12 18:50 12/17/12 7:00 12/31/12 23:50

4,607,540 2,126,920 791,501 14,185,720 5,567,910 2,831,010 2,580,800 6,518,450 2,711,340 12,247,100 1,895,070 21,046,300 15,604,100 15,131,900 21,738,600 1,602,620 15,677,600 1,052,470 26,783,500 3,238,270 11,831,800

86.29 6.64 40.02 239.10 55.61 12.37 24.17 20.35 49.08 38.23 35.49 65.69 48.71 47.23 67.85 30.01 48.93 40.08 83.60 60.65 96.02

29,396 690 7,757 92,984 9,524 2,085 2,304 5,046 13,067 5,046 12,090 5,255 8,767 9,635 8,957 9,464 12,038 17,674 30,263 20,660 13,517

Snowmelt Subtotal Storm Subtotal Base Subtotal Total

3,307,320 167,030,961 311,203,756 481,542,037

85 2,864 1,212 4,162

25,491 1,012,503 243,260 1,281,255

Note: Italics indicate estimated concentrations based on average base, snowmelt and storm flow concentrations.

Capitol Region Watershed District 2012 Monitoring Report 147


Capitol Region Watershed District 2012 Monitoring Report 148


Figure 47. Water Level Elevation and Precipitation at Arlington-Jackson Stormwater Pond, 2012. Capitol Region Watershed District 2012 Monitoring Report 149


Figure 48. Water Level Elevation and Precipitation at Sims-Agate Stormwater Pond, 2012 Capitol Region Watershed District 2012 Monitoring Report 150


Figure 49. Water Level Elevation and Precipitation at Westminster-Mississippi Stormwater Pond, 2012 Capitol Region Watershed District 2012 Monitoring Report 151


Figure 50. Water Level Elevation and Precipitation at Willow Reserve Stormwater Pond, 2012 Capitol Region Watershed District 2012 Monitoring Report 152


Figure A.6

Lake McCarrons Subwatershed

Lake McCarrons subwatershed drains 1,070 acres and is the northernmost subwatershed in CRWD, located entirely within the city limits of Roseville (Figure 51). Land use in the subwatershed is predominantly residential and parkland. As a result, the percentage of impervious surfaces in Lake McCarrons subwatershed is less than the other subwatersheds monitored by CRWD. More than half of the subwatershed drains to the Villa Park Wetland System which is designed to provide stormwater treatment before discharging to Lake McCarrons. CRWD monitors the Lake McCarrons subwatershed at the outlet of the Villa Park Wetland System prior to the water discharging to Lake McCarrons (Villa Park Outlet). The Villa Park Wetland System drains 753 acres in the Lake McCarrons Subwatershed. In addition, a flow-only station is monitored by CRWD at the outlet of Lake McCarrons (McCarrons Outlet) and RCPW collects water quality data for Lake McCarrons (see Chapter 4 for lake water quality monitoring results). Water flowing from the outlet of Lake McCarrons eventually flows into the Trout Brook Storm Sewer System before discharging to the Mississippi River.

Lake McCarrons Outlet

Villa Park Outlet

Capitol Region Watershed District 2012 Monitoring Report 153


Figure 51. Sampling Sites in the Lake McCarrons Subwatershed. Capitol Region Watershed District 2012 Monitoring Report 154


Table 40. 2006-2012 Villa Park Outlet Monitoring Results.

Subwatershed Area (ac) Total Rainfall (inches) Number of Monitoring Days Number of Storm Sampling Events Number of Storm Intervals Number of Base Sampling Events Number of Baseflow Intervals Total Discharge (cf) Storm Flow Subtotal (cf) Baseflow Subtotal (cf) Average TSS Concentration (mg/L) Total FWA TSS Concentration (mg/L) Storm FWA TSS Concentration (mg/L) Base FWA TSS Concentration (mg/L) Total TSS Loading (lbs) Storm TSS Loading (lbs) Base TSS Loading (lbs) Total TSS Yield (lb/ac) Normalized Total TSS Yield (lb/ac/in runoff) Average TP Concentration (mg/L) Total FWA TP Concentration (mg/L) Storm FWA TP Concentration (mg/L) Base FWA TP Concentration (mg/L) Total TP Loading (lbs) Storm TP Loading (lbs) Base TP Loading (lbs) Total TP Yield (lb/ac) Normalized Total TP Yield (lb/ac/in runoff)

2006 753 24.66 204 12 15 7 18 11,075,521 5,564,657 5,510,864 18 17 19 15 11,833 6,742 5,091 16 4 0.280 0.310 0.230 0.400 216 79 137 0.287 0.071

2007 753 24.16 228 18 28 9 23 14,512,244 9,835,524 4,656,826 18 23 28 12 20,394 16,981 3,397 27 5 0.260 0.240 0.220 0.280 216 136 80 0.287 0.054

2008 753 19.45 223 12 19 13 36 12,884,967 7,839,161 5,045,805 25 22 14 35 17,740 6,725 11,014 24 5 0.324 0.268 0.234 0.322 215 114 101 0.286 0.061

2009 753 19.11 220 17 24 16 20 7,597,428 5,668,868 1,928,561 32 43 49 26 20,410 17,230 3,180 27 10 0.286 0.239 0.226 0.277 113 80 33 0.150 0.054

Capitol Region Watershed District 2012 Monitoring Report 155

2010 753 31.32 212 13 28 11 19 13,687,318 11,029,258 2,658,060 59 75 91 11 64,362 62,584 1,778 85 17 0.335 0.263 0.264 0.258 225 182 43 0.299 0.060

2011 753 28.90 211 10 23 13 19 15,879,438 12,382,914 3,496,524 21 30 35 12 29,837 27,241 2,596 40 7 0.205 0.197 0.187 0.232 195 145 51 0.259 0.045

2012 753 26.38 232 17 36 14 26 12,427,912 9,898,813 2,529,099 35 31 34 19 23,891 20,840 3,051 32 7 0.321 0.224 0.213 0.266 174 132 42 0.231 0.051


Figure 52. 2012 Villa Park Outlet Level, Discharge, and Rainfall. Capitol Region Watershed District 2012 Monitoring Report 156


Table 41. 2012 Villa Park Outlet Laboratory Data. Villa Park-Out Sample Type Base Grab Base Grab Base Composite Base Grab Base Grab Base Composite Base Grab Base Grab Base Composite Base Grab Base Grab Base Composite Base Grab Base Composite Base Grab Base Composite Base Grab Base Grab Base Grab Base Composite Base Grab Base Composite Base Grab Base Grab Base Grab Base Composite Base Grab Base Composite Base Grab Base Grab

Snowmelt Grab Snowmelt Grab Storm Composite Storm Composite Storm Composite Storm Grab Storm Grab Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite Storm Composite Storm Composite Storm Grab Storm Composite Storm Composite Storm Composite

Sampling Start Date/Time 01/04/2012 11:45 02/08/2012 11:00 04/23/2012 10:55 04/24/2012 11:15 05/10/2012 10:10 05/10/2012 10:42 05/22/2012 08:33 06/04/2012 10:10 06/04/2012 10:48 06/22/2012 09:30 07/02/2012 09:00 07/02/2012 09:42 07/16/2012 09:10 07/16/2012 09:51 07/31/2012 09:44 07/31/2012 10:44 08/13/2012 08:40 08/14/2012 08:50 08/27/2012 09:35 08/27/2012 09:47 09/10/2012 09:45 09/10/2012 10:03 09/24/2012 09:15 09/24/2012 09:44 10/10/2012 10:00 10/10/2012 10:38 10/30/2012 08:35 10/30/2012 09:11 11/29/2012 10:25 12/21/2012 10:45

Sampling End Date/Time 01/04/2012 11:45 02/08/2012 11:00 04/24/2012 08:03 04/24/2012 11:15 05/10/2012 10:10 05/11/2012 10:07 05/22/2012 08:33 06/04/2012 10:10 06/05/2012 07:35 06/22/2012 09:30 07/02/2012 09:00 07/03/2012 03:21 07/16/2012 09:10 07/17/2012 08:12 07/31/2012 09:44 08/01/2012 09:21 08/13/2012 08:40 08/14/2012 08:50 08/27/2012 09:35 08/28/2012 08:18 09/10/2012 09:45 09/11/2012 08:03 09/24/2012 09:15 09/25/2012 08:29 10/10/2012 10:00 10/11/2012 05:49 10/30/2012 08:35 10/31/2012 08:19 11/29/2012 10:25 12/21/2012 10:45 Base Average

Ortho-P mg/L 0.095 0.079 0.053 0.040 0.180 0.140 0.290 0.340 0.210 0.140 0.220 0.380 0.120 0.080 0.070 0.150 0.044 0.093 0.151

Cl mg/L 249.0 398.0 101.0 85.7 79.5 68.6 40.2 92.9 77.3 46.5 81.0 108.0 144.0 156.0 163.0 90.7 166.0 286.0 135.2

Cd mg/L 0.000080 0.000150 0.000080 0.000080 0.000080 0.000080 0.000080 0.000130 0.000170 0.000240 0.000080 0.000080 0.000080 0.000080 0.000086 0.000080 0.000080 0.000080 0.000101

Cr mg/L 0.00050 0.00090 0.00078 0.00079 0.00058 0.00050 0.00050 0.00120 0.00050 0.00076 0.00053 0.00100 0.00100 0.00050 0.00190 0.00083 0.00120 0.00070 0.00082

Cu mg/L 0.00050 0.00076 0.00140 0.00120 0.00071 0.00110 0.00050 0.00330 0.00280 0.00190 0.00091 0.00140 0.00160 0.00068 0.00360 0.00130 0.00074 0.00110 0.00142

Pb mg/L 0.00028 0.00078 0.00110 0.00220 0.00017 0.01070 0.00015 0.00280 0.00160 0.00100 0.00088 0.00180 0.00250 0.00066 0.00580 0.00160 0.00046 0.00035 0.00194

01/26/2012 11:40 03/06/2012 14:15 05/01/2012 23:52 05/01/2012 23:52 05/04/2012 10:43 05/24/2012 08:50 05/25/2012 09:33 06/06/2012 19:14 06/14/2012 10:39 06/14/2012 10:46 06/17/2012 23:43 07/06/2012 23:19 07/18/2012 10:43 07/24/2012 09:45 07/29/2012 07:55 08/04/2012 00:55 09/17/2012 07:27 10/13/2012 16:27 10/19/2012 20:06 10/25/2012 10:30 10/25/2012 05:57 10/26/2012 14:03 11/11/2012 01:38

01/26/2012 11:40 03/06/2012 14:15 05/02/2012 10:19 05/03/2012 11:46 05/04/2012 20:26 05/24/2012 08:50 05/25/2012 09:33 06/07/2012 14:50 06/14/2012 10:39 06/14/2012 21:42 06/18/2012 10:46 07/07/2012 21:29 07/19/2012 00:31 07/24/2012 09:45 07/30/2012 05:06 08/04/2012 17:58 09/18/2012 14:25 10/14/2012 19:23 10/22/2012 09:07 10/25/2012 10:30 10/25/2012 18:35 10/26/2012 22:18 11/11/2012 17:17 Snowmelt Average Storm Average Annual Average Annual Maximum Annual Minimum Annual Median

0.010 0.045 0.029 0.170 0.120 0.130 0.100 0.092 0.110 0.050 0.160 0.028 0.107 0.129 0.380 0.010 0.110

415.0 478.0 83.0 87.6 54.8 25.1 80.3 61.7 37.2 73.7 53.6 49.8 54.5 153.0 162.0 157.0 101.0 90.4 446.5 82.8 129.2 478.0 25.1 89.0

0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000080 0.000099 0.000150 0.000080 0.000099 0.000350 0.000280 0.000080 0.000080 0.000080 0.000116 0.000107 0.000350 0.000080 0.000080

0.00110 0.00130 0.00080 0.00093 0.00160 0.00080 0.00050 0.00050 0.00056 0.00062 0.00050 0.00095 0.00100 0.00170 0.00590 0.00690 0.00078 0.00120 0.00120 0.00158 0.00118 0.00690 0.00050 0.00080

0.00150 0.00290 0.00240 0.00160 0.00200 0.00180 0.00140 0.00110 0.00095 0.00190 0.00150 0.00120 0.00120 0.00500 0.01080 0.01190 0.00160 0.00150 0.00220 0.00299 0.00216 0.01190 0.00050 0.00145

0.00110 0.00180 0.00650 0.00180 0.00130 0.00059 0.00065 0.00092 0.00066 0.00580 0.00051 0.00054 0.00068 0.00510 0.01750 0.02510 0.00100 0.00110 0.00145 0.00436 0.00299 0.02510 0.00015 0.00110

3.45 3.45

Ni mg/L 0.00130 0.00140 0.00110 0.00110 0.00110 0.00100 0.00096 0.00170 0.00087 0.00077 0.00098 0.00100 0.00050 0.00089 0.00300 0.00130 0.00170 0.00120 0.00122

Zn mg/L 0.0050 0.0096 0.0127 0.0150 0.0050 0.0207 0.0050 0.0288 0.0166 0.0158 0.0050 0.0171 0.0157 0.0138 0.0200 0.0145 0.0050 0.0061 0.0129

NH3 mg/L 0.660 0.630 0.073 0.110 0.130 0.240 0.640 0.220 0.320 0.350 0.310 0.250 0.380 0.130 0.500 0.770 0.340 0.400 0.359

2.57 2.57 3.01 3.45 2.57 3.01

0.00180 0.00160 0.00095 0.00120 0.00140 0.00080 0.00050 0.00068 0.00050 0.00063 0.00070 0.00067 0.00099 0.00140 0.00660 0.00730 0.00110 0.00120 0.00170 0.00166 0.00144 0.00730 0.00050 0.00110

0.0072 0.0307 0.0214 0.0097 0.0156 0.0060 0.0095 0.0116 0.0105 0.0135 0.0113 0.0143 0.0186 0.0313 0.0607 0.0726 0.0148 0.0149 0.0190 0.0210 0.0168 0.0726 0.0050 0.0144

1.700 1.400 0.094 0.040 0.120 0.520 0.280 0.580 0.330 0.370 0.220 0.040 0.310 0.140 0.370 0.220 0.110 0.460 1.550 0.263 0.382 1.700 0.040 0.315

K mg/L

TKN mg/L 1.2 1.4 1.0 1.0 1.0 1.0 1.2 1.0 1.2 1.2 1.3 1.2 1.5 1.2 4.0 1.5 1.4 1.2 1.4

Total P mg/L 0.14 0.17 0.14 0.16 0.20 0.32 0.29 1.20 0.60 0.46 0.46 0.22 0.29 0.18 1.00 0.29 0.18 0.18 0.27

NO3 mg/L 0.20 0.20 0.20 0.18 0.10 0.10 0.10 0.12 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.12

2.6 2.3 1.0 1.0 1.9 1.0 1.0 1.9 1.0 1.1 1.3 1.0 1.0 6.7 1.2 1.2 2.5 1.6 1.5 6.7 1.0 1.2

0.50 0.21 0.10 0.18 0.17 0.23 0.16 0.20 0.18 0.22 0.31 0.20 0.22 1.20 0.38 0.26 0.18 0.19 0.36 0.21 0.32 1.20 0.10 0.22

0.20 0.29 0.20 0.20 0.20 0.16 0.10 0.17 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.25 0.13 0.13 0.29 0.10 0.10

NO2 mg/L 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

NO2 +NO3 mg/L 0.20 0.20 0.20 0.18 0.10 0.10 0.10 0.12 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.12

0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

0.20 0.32 0.20 0.20 0.20 0.19 0.10 0.19 0.14 0.10 0.11 0.10 0.10 0.10 0.10 0.10 0.10 0.26 0.14 0.14 0.32 0.10 0.10

TDS mg/L 816 1,010 378 272 347 304 230 370 364 208 414 530 564 579 662 434 609 808 494

6.0 13.6 7.0 5.2 5.3 7.8 5.0 67.9 18.9 33.2 30.6 31.2 18.9 11.5 120.0 22.6 8.0 6.1 17.6

TVS mg/L 207.0 173.0 100.0 66.7 104.0 159.0 56.7 86.5 96.3 116.0 104.0 11.0 106.7

1,120 1,070 304 346 203 110 376 263 188 328 275 222 297 602 434 370 1,095 308 453 1,120 110 370

28.0 11.7 12.3 18.5 7.4 4.0 9.5 6.8 5.0 14.6 10.5 7.4 8.3 135.0 312.0 305.0 20.0 12.0 15.4 19.9 53.2 34.5 312.0 4.0 12.0

187.0 148.0 88.0 82.0 112.0 70.0 200.0 38.6 72.0 43.4 64.7 41.0 167.5 81.2 101.1 207.0 11.0 92.2

Note: Nitrate (NO3 ), Nitrite (NO2 ), and CBOD values may contain estimated unflagged data Red Text

Capitol Region Watershed District 2012 Monitoring Report 157

TSS mg/L

Actual number less than value Reporting limit halved Not collected Outlier not included in averages

VSS mg/L 42 11 4 4 15

Hardness mg/L 552 553 203 158 234 200 146 303 222 146 268 335 390 396 449 280 387 396 312.1

103 11 8 9 33 24 103 4 10

526 340 180 199 132 71.7 205 165 102 211 159 150 184 394 399 485 308 283 433.0 226.7 280.9 553.0 71.7 251.0

CBOD mg/L 2.0 2.2 3.5 9.6 2.5 3.4 12.7 54.7 2.0 12.7 3.4 7.3 5.4 4.8 77.2 5.6 7.2 3.4 12.2

SO4 mg/L 31.4 24.9 11.7 19.5 9.7 7.9 3.5 3.7 5.6 5.6 4.6 7.0 9.7 18.3 20.6 17.4 27.3 25.3 14.1

4.9 4.9 13.7 5.0 2.0 3.3 25.2 4.9 6.2 73.2 4.9 16.7 13.0 77.2 2.0 5.0

25.8 23.9 9.5 10.5 7.0 3.9 10.9 6.3 5.1 7.3 6.1 6.4 5.5 11.5 26.5 27.7 17.7 16.2 24.9 11.1 13.4 31.4 3.5 10.1

Fl mg/L

Ca mg/L

Mg mg/L

0.1 0.1

90.7 102.0 96.4

26.4 33.0 29.7

0.1 0.1 0.1 0.1 0.1 0.1

51.8 106.0 78.9 87.6 106.0 51.8 96.4

13.3 31.7 22.5 26.1 33.0 13.3 29.1

pH E. coli Std. Units mpn/100 mL 7.5 70 8.0 687 7.8 19 52 7.6 7.4 196 276 7.5 6.8 365 2,420 7.4 980 7.4 411 8.0 144 7.3 173 7.8 1,120 7.7 146 8.1 488 7.5 435 7.8 7.7 64 7.4 53 7.6 450 7.4 7.5 7.3 7.9 7.6 7.1 7.1 7.4 7.0 7.6 7.5 7.6 7.8 7.8 7.5 7.8 7.5 7.5 7.5 8.1 6.8 7.5

1,000 1,733 5,200 28,800 9,183 2,038 28,800 19 388


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Table 42. 2012 Villa Park Outlet Loading.

Sample Type

Sample Collection Time Start Start Date End Date Time

End Time

Base Base Storm Storm Storm Storm Base Composite Storm Base Storm Composite Storm Composite Storm Composite Storm Base Composite Storm Base Grab Storm Grab Storm Storm Storm Base Composite Storm Composite Base Storm Base Storm Composite Storm Storm Composite Storm Base Grab Base Composite Storm Base

4/23/2012

10:55

4/24/2012

8:03

5/1/2012 5/2/2012 5/4/2012

23:52 11:26 10:43

5/2/2012 5/3/2012 5/4/2012

10:19 11:46 20:26

5/10/2012

10:42

5/11/2012

10:07

5/22/2012 5/25/2012

8:33 9:33

5/22/2012 5/25/2012

8:33 9:33

6/4/2012 6/6/2012

10:48 19:14

6/5/2012 6/7/2012

7:35 14:50

6/14/2012

10:46

6/14/2012

21:42

6/17/2012

23:43

6/18/2012

10:46

6/22/2012 7/2/2012

9:30 9:42

6/22/2012 7/3/2012

9:30 3:21

TP (mg/L) 0.27 0.27 0.21 0.21 0.21 0.21 0.14 0.21 0.27 0.1 0.18 0.17 0.21 0.16 0.21 0.2 0.23 0.21 0.21 0.21 0.32 0.16 0.27 0.21 0.27 0.2 0.21 0.18 0.21 0.29 0.27 0.21 0.27

TSS (mg/L) 17.6 17.6 53.2 53.2 53.2 53.2 7 53.2 17.6 12.3 18.5 7.4 53.2 5.2 53.2 5.3 4 53.2 53.2 53.2 7.8 9.5 17.6 53.2 17.6 6.8 53.2 5 53.2 5 67.9 53.2 17.6

Loading Interval Start 3/27/2012 10:00 4/4/2012 23:50 4/15/2012 3:00 4/15/2012 20:40 4/17/2012 23:20 4/21/2012 9:00 4/23/2012 10:40 4/25/2012 9:20 4/28/2012 10:40 5/1/2012 21:50 5/2/2012 10:40 5/4/2012 8:50 5/6/2012 2:30 5/10/2012 7:40 5/19/2012 18:50 5/21/2012 12:20 5/23/2012 21:00 5/26/2012 10:20 5/27/2012 23:10 5/30/2012 11:50 6/1/2012 21:20 6/6/2012 19:00 6/8/2012 13:40 6/10/2012 21:10 6/12/2012 15:00 6/14/2012 9:50 6/16/2012 9:10 6/17/2012 22:40 6/19/2012 3:40 6/22/2012 4:30 6/27/2012 7:30 7/3/2012 3:40 7/5/2012 18:50

End

Interval Volume (cf)

4/2/2012 0:00

113,642

4/14/2012 16:00 4/15/2012 20:30 4/17/2012 23:10 4/21/2012 8:50 4/23/2012 10:30 4/25/2012 9:10 4/28/2012 10:30 5/1/2012 21:40 5/2/2012 10:30 5/4/2012 8:40 5/6/2012 2:20 5/10/2012 7:30 5/19/2012 18:40 5/21/2012 12:10 5/23/2012 20:50 5/26/2012 10:10 5/27/2012 23:00 5/30/2012 11:40 6/1/2012 21:10 6/6/2012 18:50 6/8/2012 13:30 6/10/2012 21:00 6/12/2012 14:50 6/14/2012 9:40 6/16/2012 9:00 6/17/2012 22:30 6/19/2012 3:30 6/22/2012 4:20 6/27/2012 7:20 7/3/2012 3:30 7/5/2012 18:40 7/6/2012 18:40

196,999 93,206 79,034 169,532 154,287 62,163 353,445 183,625 89,801 470,731 458,640 844,671 257,082 238,223 53,091 1,777,673 264,435 293,461 157,230 102,263 174,777 49,221 107,571 38,540 482,167 208,137 329,836 457,462 149,525 113,016 150,222 14,020

Capitol Region Watershed District 2012 Monitoring Report 159

Interval TP (lb) 1.92 3.32 1.22 1.04 2.22 2.02 0.54 4.63 3.10 0.56 5.29 4.87 11.07 2.57 3.12 0.66 25.52 3.47 3.85 2.06 2.04 1.75 0.83 1.41 0.65 6.02 2.73 3.71 6.00 2.71 1.90 1.97 0.24

Interval TSS (lb) 125 216 310 262 563 512 27 1,174 202 69 544 212 2,805 83 791 18 444 878 975 522 50 104 54 357 42 205 691 103 1,519 47 479 499 15


Storm Composite Base Storm Base Composite Storm Composite Storm Storm Base Storm Composite Base Composite Storm Composite Base Grab Storm Base Composite Base Composite Storm Composite Base Composite Base Base Composite Base Storm Composite Base Storm Composite Base Storm Composite Storm Composite Base Composite Storm Base Storm Composite Base

7/6/2012

23:19

7/7/2012

21:29

7/16/2012 7/18/2012

9:51 10:43

7/17/2012 7/19/2012

8:12 0:31

7/29/2012 7/31/2012 8/4/2012 8/14/2012

7:55 10:44 0:55 8:50

7/30/2012 8/1/2012 8/4/2012 8/14/2012

5:06 9:21 17:58 8:50

8/27/2012 9/10/2012 9/17/2012 9/24/2012

9:47 10:03 7:27 9:44

8/28/2012 9/11/2012 9/18/2012 9/25/2012

8:18 8:03 14:25 8:29

10/10/2012

10:38

10/11/2012

5:49

10/13/2012

16:27

10/14/2012

19:23

10/19/2012

20:06

10/22/2012

9:07

10/25/2012 10/26/2012 10/30/2012

5:57 14:03 9:11

10/25/2012 10/26/2012 10/31/2012

18:35 22:18 8:19

11/11/2012

1:38

11/11/2012

17:17

Storm Flow-Weighted Average Base Flow-Weighted Average Total Flow-Weighted Average

0.22 0.27 0.21 0.6 0.31 0.21 0.21 0.27 0.2 0.46 0.22 0.46 0.21 0.22 0.29 0.21 0.18 0.27 0.27 0.27 0.27 0.27 0.38 0.27 0.26 0.18 0.29 0.21 0.27 0.19 0.27

14.6 17.6 53.2 18.9 10.5 53.2 53.2 17.6 7.4 33.2 8.3 30.6 53.2 31.2 18.9 135 11.5 17.6 120 17.6 312 17.6 305 17.6 20 12 22.6 53.2 17.6 15.4 17.6

0.21 0.27 0.22

34 19 31

7/6/2012 18:50 7/10/2012 10:10 7/13/2012 4:10 7/15/2012 1:20 7/18/2012 2:30 7/21/2012 6:30 7/24/2012 4:40 7/26/2012 22:50 7/28/2012 23:10 7/31/2012 8:10 8/3/2012 23:30 8/6/2012 7:40 8/15/2012 8:20 8/17/2012 9:40 9/3/2012 18:50 9/17/2012 3:10 9/20/2012 10:10 10/7/2012 4:40 10/10/2012 10:30 10/11/2012 6:10 10/13/2012 13:10 10/14/2012 23:00 10/19/2012 7:40 10/22/2012 12:20 10/25/2012 4:50 10/26/2012 8:10 10/28/2012 12:00 11/6/2012 2:20 11/8/2012 12:50 11/11/2012 0:20 11/12/2012 20:50

7/10/2012 10:00 7/13/2012 4:00 7/15/2012 1:10 7/18/2012 2:20 7/21/2012 6:20 7/24/2012 4:30 7/26/2012 22:40 7/28/2012 23:00 7/31/2012 8:00 8/3/2012 23:20 8/6/2012 7:30 8/15/2012 8:10 8/17/2012 9:30 9/3/2012 18:40 9/17/2012 3:00 9/20/2012 10:00 10/7/2012 4:30 10/10/2012 10:20 10/11/2012 6:00 10/13/2012 13:00 10/17/2012 22:50 10/19/2012 7:30 10/22/2012 12:10 10/25/2012 4:40 10/26/2012 8:00 10/28/2012 11:50 11/6/2012 2:10 11/8/2012 12:40 11/11/2012 0:10 11/12/2012 20:40 11/14/2012 15:00

300,847 44,031 96,778 44,662 355,560 385,419 131,583 24,200 223,503 74,022 162,220 97,867 107,957 205,204 89,483 151,195 216,524 29,333 12,488 31,895 33,954 49,270 79,816 78,249 217,889 111,905 142,279 93,409 40,863 92,236 15,544

4.13 0.74 1.27 1.67 6.88 5.05 1.72 0.41 2.79 2.13 2.23 2.81 1.42 2.82 1.62 1.98 2.43 0.49 0.21 0.54 0.57 0.83 1.89 1.32 3.54 1.26 2.58 1.22 0.69 1.09 0.26

274 48 321 53 233 1,280 437 27 103 153 84 187 359 400 106 1,274 155 32 94 35 661 54 1,520 86 272 84 201 310 45 89 17

Storm Subtotal Base Subtotal Total

9,898,813 2,529,099 12,427,912

131.58 42 173.60

20,840 3,051 23,891

Note: Italics indicate estimated concentrations based on average base and storm flow concentrations. Average base TP = 0.27 mg/L, TSS = 23.3; average storm TP = 0.21 mg/L, TSS = 53.2 mg/L.

Capitol Region Watershed District 2012 Monitoring Report 160


Appendix B: Metal Standards Based on Hardness

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162


Appendix B Metal Standards Based on Hardness Metals standards for cadmium, chromium, copper, lead, nickel, and zinc were calculated on an individual site basis for the entire monitoring season (yearly) as well as for base, storm, and illicit discharge event types (Table 42). Listed below are the equations used to calculate the event type and yearly metals standards for cadmium, chromium, copper, lead, and zinc. Average hardness concentrations for each individual monitoring site were used in the calculations, which is why each site has a different standard. To convert from micrograms (Âľg) to milligrams (mg), the standard was multiplied by the conversion factor .

The Minnesota Rules also states that for waters with hardness values greater than 212 mg/L, the chronic standard for nickel shall not exceed 0.297 mg/L. For those event types or yearly averages which have average hardness values which exceed 212 mg/L, the nickel standard for those event types or year was set equal to the state standard of 0.297 mg/L. If the average hardness value was less than 212 mg/L, the following equation was used to calculate the nickel standard:

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Table 43. 2012 Metals Standards Based on Average Hardness.

Parameter Hardness

Cadmium

Chromium

Copper

Lead

Nickel

Zinc

Trout Trout St. Brook Brook Trout Lambert's East Phalen Anthony East West Brook Average Landing Kittsondale Creek Park Branch Branch Outlet Base 529 443 356 569 188 337 Illicit Discharge 409 Storm 51 108 86 101 101 119 Yearly 240 290 263 313 349 151 238 Base 0.0034 0.0034 0.0031 0.0034 0.0019 0.0029 Illicit Discharge 0.0034 Storm 0.0007 0.0012 0.0010 0.0011 0.0011 0.0013 Yearly 0.0023 0.0026 0.0024 0.0028 0.0030 0.0016 0.0022 Base 0.6442 0.6442 0.5857 0.6442 0.3471 0.5597 Illicit Discharge 0.6442 Storm 0.1201 0.2206 0.1822 0.2090 0.2092 0.2389 Yearly 0.4240 0.4951 0.4572 0.5276 0.5756 0.2898 0.4212 Base 0.0232 0.0232 0.0216 0.0232 0.0145 0.0209 Illicit Discharge 0.0232 Storm 0.0065 0.0103 0.0089 0.0099 0.0099 0.0110 Yearly 0.0169 0.0190 0.0179 0.0200 0.0213 0.0127 0.0168 Base 0.0186 0.0186 0.0160 0.0186 0.0071 0.0149 Illicit Discharge 0.0186 Storm 0.0014 0.0035 0.0026 0.0032 0.0032 0.0040 Yearly 0.0097 0.0123 0.0109 0.0136 0.0156 0.0054 0.0096 Base 0.5094 0.5094 0.4617 0.5094 0.2690 0.4406 Illicit Discharge 0.5094 Storm 0.0898 0.1684 0.1382 0.1593 0.1594 0.1829 Yearly 0.2970 0.3881 0.3575 0.4145 0.4535 0.2232 0.3284 Base 0.3431 0.3431 0.3109 0.3431 0.1810 0.2967 Illicit Discharge 0.3431 Storm 0.0603 0.1132 0.0929 0.1071 0.1072 0.1230 Yearly 0.2226 0.2613 0.2407 0.2791 0.3054 0.1502 0.2211 *For hardness values greater than 400mg/L, 400 mg/L is used as the value for metals standards calculations (MPCA)

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164

Como 7

Sarita

Villa Park 312

90 39 48

41 41

227 278 0.0028

0.0010 0.0005 0.0006

0.0006 0.0006

0.0022 0.0025 0.5257

0.1894 0.0966 0.1138

0.0991 0.0991

0.4047 0.4776 0.0199

0.0092 0.0055 0.0062

0.0056 0.0056

0.0163 0.0185 0.0135

0.0028 0.0010 0.0013

0.0010 0.0010

0.0090 0.0117 0.4130

0.1439 0.0717 0.0850

0.0737 0.0737

0.3151 0.3740 0.2781

0.0967 0.0482 0.0571

0.0495 0.0495

0.2121 0.2518


Appendix C: Miscellaneous Reference Tables

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Capitol Region Watershed District 2012 Monitoring Report 166


Appendix C Miscellaneous Reference Tables

Table 44. 2012 Data Collection Efficiency at CRWD Monitoring Sites. Site

Possible Days Possible Hours Hours Missing Efficiency

East Kittsondale

366

8,784

145

98%

Phalen Creek

366

8,784

421

95%

St. Anthony Park

366

8,784

772

91%

Trout Brook-East Branch

366

8,784

221

97%

Trout Brook-West Branch

366

8,784

534

94%

Trout Brook Outlet

366

8,784

167

98%

Como 7

223

5,363

44

99%

Sarita

228

5,469

0

100%

Villa Park

232

5,573

0

100%

Arlington-Jackson

228

5,472

0

100%

Sims-Agate

228

5,472

0

100%

Westminster-Mississippi

217

5,215

0

100%

McCarrons Outlet

213

5,113

0

100%

Como Outlet

218

5,233

0

100%

3,984

95,614

2,305

98%

Total

Capitol Region Watershed District 2012 Monitoring Report 167


Table 45. 2012 Epilimnetic Data and Growing Season Averages. Lake Como Como Como Como Como Como Como Como Crosby Crosby Crosby Crosby Crosby Crosby Crosby Crosby Loeb Loeb Loeb Loeb Loeb Loeb Loeb Loeb McCarrons McCarrons McCarrons McCarrons McCarrons McCarrons McCarrons Little Crosby Little Crosby Little Crosby Little Crosby Little Crosby Little Crosby Little Crosby Little Crosby

Date 5/2/2012 5/16/2012 6/12/2012 6/29/2012 7/20/2012 8/6/2012 8/23/2012 9/13/2012 Average 5/14/2012 5/31/2012 6/25/2012 7/13/2012 7/31/2012 8/15/2012 9/7/2012 9/25/2012 Average 5/2/2012 5/16/2012 6/13/2012 6/29/2012 7/20/2012 8/6/2012 8/23/2012 9/12/2012 Average 5/2/2012 5/18/2012 6/12/2012 6/29/2012 7/20/2012 8/22/2012 9/12/2012 Average 5/14/2012 5/31/2012 6/25/2012 7/13/2012 7/31/2012 8/15/2012 9/7/2012 9/25/2012 Average

Secchi Chl-a TP (m) (Âľg/L) (mg/L) 0.9 25.3 0.970 1.3 11.8 0.105 0.7 48.8 0.233 0.8 25.3 0.172 0.5 54.8 0.262 0.4 53.5 0.348 0.5 71.6 0.338 0.7 41.0 0.275 0.7 41.5 0.338 2.6 2.4 0.117 2.2 2.4 0.223 1.6 4.7 0.155 1.5 8.3 0.109 1.7 5.0 0.094 1.7 10.0 0.093 1.5 15.0 0.116 3.3 7.2 0.100 2.0 6.9 0.126 2.1 6.4 0.033 3.2 1.4 0.033 3.3 1.8 0.018 3.7 2.5 0.027 2.2 9.4 0.029 3.1 4.8 0.019 3.9 2.6 0.025 3.4 4.7 0.033 3.1 4.2 0.027 3.1 8.6 0.020 4.0 3.0 0.018 2.3 4.8 0.023 2.4 3.2 0.017 2.8 2.7 0.013 3.5 1.5 0.018 4.2 2.1 0.014 3.2 3.7 0.018 3.5 0.41 0.04 2.5 8.29 0.065 2.5 5.57 0.106 1.9 10.38 0.119 2.6 7.67 0.064 3 3.46 0.044 3.7 2.20 0.039 4.8 2.69 0.044 3.1 5.1 0.065

Value exceeds the state standard Value equals the state standard

Capitol Region Watershed District 2012 Monitoring Report 168


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