Water Quality Management Plan (WQMP)

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Only Rain Down the Drain LogoUnder the provisions of the federal Clean Water Act (CWA) (33 U.S.C. § 1251 et seq.) the National Pollutant Discharge Elimination System (NPDES) was created by the United States Environmental Protection Agency (US EPA) and together with the provisions of the California Water Code (CWC) (commencing with section 13000), a Water Quality Management Plan is required for priority projects listed below.

NPDES regulates the discharges of Potential Pollutants and Non-Stormwater discharges, minimize urban runoff from impacting receiving waters to the Maximum Extent Practicable (MEP).

On June 15, 2009 the amended Water Quality Management Plan (WQMP), which is part of NPDES became effective and requires on the following Private and Public Developments:

  • SF hillside residence; impervious area ≥ 10,000 sq. ft.; Slope ≥ 25%
  • SF hillside residence; impervious area ≥ 10,000 sq. ft.; Slope ≥ 10% & erosive soils
  • Commercial or Industrial ≥ 100,000 sq. ft.
  • Automotive repair shop
  • Retail Gasoline Outlet disturbing > 5,000 sq. ft.
  • Restaurant disturbing > 5,000 sq. ft.
  • Home subdivision ≥ 10 housing units
  • Parking lot ≥ 5,000 sq. ft. or ≥ 25 parking spaces

These Priority Development Projects require a Preliminary WQMP to be submitted to the City of Cathedral City upon application of project and Project-Specific WQMP (final) prior to approval of Grading Plan.

The WQMP documents can be downloaded at the link below:
http://www.floodcontrol.co.riverside.ca.us/NPDES/Developers.aspx

For instructions in preparing Project-Specific WQMP document, see link below.
http://rcflood.org/downloads/NPDES/Documents/WW_SWMP_WQMP/WWR_WQMP_Guidance_Jan15_2015.pdf

For WQMP blank template, download from the link below:
http://rcflood.org/downloads/NPDES/Documents/WW_SWMP_WQMP/WWR_WQMP_Template_Jan15_2015.docx

For the Project Specific WQMP Summary Data Form, download the link below:
Project Specific WQMP Summary Data Form

For the Project Specific WQMP covenant, download the link below:
Covenant for Water Quality Management Plan and Urban Runoff

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