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A. Watershed Planning.

1. The City shall support and participate in watershed-based planning efforts with the County of San Diego and the San Diego Regional Water Quality Control Board. Watershed planning efforts shall be facilitated by helping to:

a. Pursue funding to support the development of watershed plans.

b. Identify priority watersheds where there are known water quality problems or where development pressures are greatest.

c. Assess land uses in the priority areas that degrade coastal water quality.

d. Ensure full public participation in the plan’s development.

B. New Development.

1. New development shall be sited and designed to protect water quality and minimize impacts to coastal waters by incorporating measures designed to ensure the following:

a. Protect beneficial uses of waters, areas necessary to maintain riparian and aquatic biota, and/or areas that are susceptible to erosion and sediment loss.

b. Limit increases of impervious surfaces.

c. Limit land disturbance activities such as clearing, grading, and cut-and-fill to reduce erosion and sediment loss.

d. Limit disturbance of natural drainage features and vegetation.

2. New development shall not result in the degradation of the water quality of groundwater basins or coastal surface waters including the ocean, coastal streams, or wetlands. Urban runoff pollutants shall not be discharged or deposited such that they adversely impact water resources (groundwater, coastal waters, wetlands, streams) consistent with the local National Pollutant Discharge Elimination System Storm Water Municipal Permit.

3. Development must be designed to minimize, to the maximum extent practicable, the introduction of pollutants of concern (as defined in the City’s Standard Urban Storm Water Mitigation Plan [SUSMP]) that may result in significant impacts from site runoff from impervious areas.

4. New development must comply with the requirements of the City’s SUSMP and the City’s Development and Redevelopment Projects Storm Water Management Standards Requirements Manual, including the preparation of required water quality documents and the implementation of source control, site design, and treatment best management practices (BMPs).

5. Post-development peak flow discharge rates for the 100-year storm event shall not exceed the pre-development rate.

6. Post-construction treatment BMPs shall be designed to treat, infiltrate, or filter runoff produced by the eighty-fifth percentile, 24-hour storm event for volume-based BMPs and the eighty-fifth percentile, one-hour storm event for flow-based BMPs, as required by the City’s SUSMP.

7. Public streets and parking lots shall be swept frequently to remove debris and contaminant residue. For private streets and parking lots, the property owner shall be responsible for frequent sweeping to remove debris and contaminant residue.

8. The City should develop and implement a program to detect and remove illicit connections and to stop illicit discharges.

9. New development that requires a grading permit or storm water management document shall include landscaping and revegetation of graded or disturbed areas, consistent with the landscape requirements of the LCP and City requirements. Areas adjacent to preserved open space shall use native plants to the maximum extent practicable to reduce the potential for invasive species introduction. (Ord. 3352 § 2, 2015; Ord. 3238 § 2 (Exh. B, C), 2012).