Como Lake TMDL
TABLE OF CONTENTS Executive Summary....................................................................................................................1 1. Background and Pollutant Sources ......................................................................................2 1A. 303(d) Listings ....................................................................................................................2 1B. Background ........................................................................................................................2 1C. Pollutant of Concern .........................................................................................................11 2. Applicable Water Quality Standards and Numeric Water Quality Targets ......................15 2A. Designated Uses ..............................................................................................................15 2B. Water Quality Standards ..................................................................................................15 3. Impairment Assessment ......................................................................................................17 4. Pollutant Sources .................................................................................................................24 4A. Watershed Runoff.............................................................................................................24 4B. Internal Loading................................................................................................................27 4C. Atmospheric Deposition ...................................................................................................29 5. Loading Capacity ..................................................................................................................30 5A. Methods ............................................................................................................................30 5B. Results..............................................................................................................................31 6. TMDL Allocations..................................................................................................................32 6A. Margin of Safety ...............................................................................................................32 6B. TMDL Allocations..............................................................................................................32 6C. Wasteload Allocations ......................................................................................................33 6D. Load Allocations ...............................................................................................................36 6D. Reserve Capacity .............................................................................................................36 6E. TMDL Allocation Summary ...............................................................................................36 7. Seasonal Variation and Critical Conditions .......................................................................37 8. Monitoring Plan.....................................................................................................................38 9. Implementation Strategy ......................................................................................................40 9A. Watershed Load ...............................................................................................................40 9B. Internal Load.....................................................................................................................41 10. Reasonable Assurances ....................................................................................................42 CRWD Rules...........................................................................................................................42 CRWD Watershed Management Plan ....................................................................................42 NPDES MS4 Program ............................................................................................................42 Como Lake Strategic Management Plan ................................................................................42 11. Public Participation ............................................................................................................44 Advisory Group .......................................................................................................................44 Data Collection and Management Work Group ......................................................................44 Public Outreach Work Group ..................................................................................................44 Stakeholder Meetings during TMDL Process..........................................................................45
Emmons & Olivier Resources, Inc.
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