19E - SANTA ANA GRADE SEPARATION PROJECT

Home Browse Search

Santa Ana Blvd. Grade Separation and other compliance related documents required by the permit, shall be mailed to the State Water Quality Control Board. The project SWPPP shall be prepared by a Qualified SWPPP Practitioner (QSP) or a Qualified SWPPP Developers (QSD) to address all construction related activities, equipment, and materials that have the potential to impact the water quality. The SWPPP shall identify the sources of pollutants that may affect the quality of storm water and include construction site BMPs to control pollutants and sediments. The SWPPP shall include erosion control, sediment control, wind erosion control, tracking control, and all other applicable non - stormwater management and material management BMPs. All construction site BMPs shall follow the latest edition of the CASQA Stormwater Best Management Practice Handbook for Construction. In addition, the project water quality risk level shall be identified. Rain Event Action Plan, Field Monitoring, and Reporting Guidance shall be prepared for effluent monitoring and receiving water monitoring. The General Permit requires that permittees prepare, certify, and electronically submit an Annual Report no later than September 1st of each year. Reporting requirements are identified in Section XVI of the General Permit. WQ -2 Treatment BMPs shall be implemented to the maximum extent practicable (MEP), consistent with the requirements of the Orange County MS4 Permit, Order R8- 2009 -0030 (amended by Order R8 -2010 -0062, NPDES No. CAS 618030). Biofiltration systems or catch basin filter inserts are proposed as the potential treatment BMPs for the project. Detailed design of the BMP and the location will be determined in the final engineering phase. Removal of existing vegetation will be minimized to the greatest extent possible and any mature trees to be saved would be identified on final plans. The final siting and design of treatment BMPs will be designed in compliance with the 2010 OC Model Water Quality Management Plan (WQMP), the Technical Guidance Document (TGD) and the 2003 OC Drainage Area Management Plan (DAMP). WQ -3 Design pollution prevention BMPs shall be implemented in accordance with Green Streets Municipal Handbook (EPA- 833 -F -08 -009; 2008), such as preservation of existing vegetation, slope /surface protection systems (permanent soil stabilization), concentrated flow conveyance systems such as ditches, berms, dikes, and swales, overside drains, flared end sections, and outlet protection /velocity dissipation devices. 6.5 Natural Environmental Study- Minimum Impact (NES /MI) The NES - Minimal Impacts (NES /MI) found no natural vegetation communities occurring within the Biological Study Area (BSA). In addition, no impact to jurisdictional waters and wetlands would occur as these resources are not present within the BSA. The following measures are avoidance and /or minimization measures to reduce impacts to species. BIO -1 Preconstruction Nesting Bird Survey. If project - related site disturbances are scheduled to occur during the core nesting period (February 15 through September 1), a qualified biologist will perform preconstruction nesting bird surveys. The survey will be completed within seven days prior to any project - related disturbances. If native birds are nesting on or within 100 feet (as accessible) of the LOD, a 100 -foot buffer (or an alternative width, as determined by a qualified ornithologist) should be flagged around the nest, and no PROJECT REPORT EQUIVALENT 19E -26 17