Appendix A Water Quality Memo - Laserfiche WebLink

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8 Orange County Construction Runoff Guidance Manual The Construction Runoff Guidance Manual for Contractors, Project Owners, and Developers (County of Orange 2012) presents the requirements related to construction from the DAMP. The goal of the Guidance Manual is to control pollutant discharges from construction sites. As such, it helps applicants for building and grading permits to understand the water quality requirements during the construction phase of development projects. City of Sana Ana General Plan The City of Santa Ana General Plan Conservation Element establishes the following policies and programs that relate to hydrology and water quality (City of Santa Ana 1982). • Encourage water conservation through design and facilities features of new developments through the use of water quality wetlands, biofiltration swales, watershed-scale retrofits, etc. where such measures are likely to be effective and technically and economically feasible. • Preserve vegetation along watercourse channels. • Establish development guidelines for areas particularly susceptible to erosion and sediment loss. • Provide for appropriate permanent measures to reduce stormwater pollutant loads in stormwater from the development site. • Minimize changes in hydrology and pollutant loading; require incorporation of control, including structural and non-structural and Best Management Practices to mitigate the projected increases in pollutant loads and flows. • Ensure that post-development runoff rates and velocities from a site have no significant adverse impact on downstream erosion and stream habitat. • Maintain compliance with regional watershed and stormwater management principles. City of Santa Ana Municipal Code The City of Santa Ana Municipal Code (1969), Chapter 18, Article IV, Sections 151-161 regulate water pollution to improve water quality and comply with federal regulations relating to stormwater runoff. The code includes: • Prohibition on illicit connections and discharges; • Compliance with the Orange County DAMP and any other terms, conditions and requirements defined by the City of Santa Ana; • Inspection of the project for compliance and the administrative remedies for noncompliance; and, • Discussion of the permitting process. General Waste Discharge Requirement Permit for Groundwater Discharges The Santa Ana RWQCB requires a permit for discharging wastes to surface waters from activities involving groundwater extraction. The General Waste Discharge Requirements for Discharges to Surface Waters that Pose an Insignificant (De Minimus) Threat to Water Quality (Order No. R8-2009-0003, NPDES No. CAG998001) (De Minimus Permit) covers discharges that pose a low potential to impact surface water quality within the Santa Ana Region. This Order would apply to the project if it could be