conveyance system (i.e., that receive drainage from or discharge to a stormwater conveyance). b. Line layers showing the drainage infrastructure associated with each retention/detention basin. 4. Locations of Discharges to Waters of the United States - Line or polygon layer showing the location (and name) of all waters of the United States that may receive stormwater discharges from the MS4 and to clearly identify any listed Outstanding Arizona Water or Impaired Water. The City is required to complete studies associated with the above mapping requirements by the due date of the fourth (4th) year annual report (i.e. September 30, 2014). As of the date of the Annual Report, the City’s mapping system includes all of the information required in the mapping studies having completed a study to determine the direction of flow from the streets with storm water conveyance. Please note, the City does not discharge to waters of the United States that are considered to be an Outstanding Arizona Water or Impaired Water. 3.6 INDUSTRIAL FACILITIES The 2010 MS4 Permit requires the City to report the following in the Annual Report as it pertains to the inspection of private commercial and industrial facilities: 1. Status of identification and inventory of these facilities. 2. An overview of inspection findings and note significant findings. 3. Corrective and enforcement actions needed and taken in response to inspections. 3.6.1 Identification and Inventory of Private Commercial and Industrial Facilities The 2010 MS4 Permit requires the City to: 1. Develop and maintain an inventory, list, or database of commercial and industrial facilities that have the potential to discharge pollutants to the City’s MS4. 2. Maintain a system to collect and update this information on a routine basis.
City of Mesa, Storm Water Annual Report
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