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California Regional Water Quality Control Board <br /> Central Valley Region a Robert Schneider,Chair <br /> Alan C.Lloyd,Ph.D. Arnold <br /> Agency Secretary Sacramento Main Office Schwarzenegger <br /> 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 Governor <br /> Phone(916)464-3291 •FAX(916)464-4645 <br /> http://www.waterboards.ca.gov/centralvalley <br /> RECEIVED <br /> 2 August 2005 <br /> AUG <br /> 3 ?005 <br /> Rick Griffin Communi'DeV%pmen <br /> t dept. <br /> Development Services Division <br /> 1810 East Hazelton Avenue <br /> Stockton, CA 95205 <br /> PROPOSED PROJECT REVIEW, CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA), <br /> PROJECT APPLICATION FOR THE AGRICULTURAL CHEMICAL SALES AND <br /> DISTRIBUTION EXPANSION, MANTECA, SAN JOAQUIN COUNTY <br /> As a Responsible Agency, as defined by CEQA, we have reviewed the Project Application for the <br /> Agricultural Chemical Sales and Distribution Expansion. Based on our review, we have the following <br /> comments regarding the proposed project. <br /> Construction Storm Water <br /> A NPDES General Permit for Storm Water Discharges Associated with Construction Activities,NPDES <br /> No. CAS000002, Order No. 99-08-DWQ is required when a site involves clearing, grading, disturbances <br /> to the ground, such as stockpiling, or excavation that results in soil disturbances of one acre or more of <br /> total land area. Construction activity that involves soil disturbances on construction sites of less than <br /> one acres and is part of a larger common plan of development or sale, also requires permit coverage. <br /> Coverage under the General Permit must be obtained prior to construction. More information may be <br /> found at http://www.swrcb.ca.gov/stormwtr/construction.htmi <br /> Post-Construction Storm Water Management <br /> Manage storm water to retain the natural flow regime and water quality, including not altering baseline <br /> flows in receiving waters, not allowing untreated discharges to occur into existing aquatic resources, not <br /> using aquatic resources for detention or transport of flows above current hydrology, duration, and <br /> frequency. All storm water flows generated on-site during and after construction and entering surface <br /> waters should be pre-treated to reduce oil, sediment, and other contaminants. The local municipality <br /> where the proposed project is located may now require post construction storm water Best Management <br /> Practices (BMPs) pursuant to the Phase Il, SWRCB, Water Quality Order No. 2003 —0005 —DWQ, <br /> NPDES General Permit No. CAS000004, WDRS for Storm Water Discharges from Small Municipal <br /> Separate Storm Sewers Systems (MS4). The local municipality may require long-term post-construction <br /> BMPs to be incorporated into development and significant redevelopment projects to protect water <br /> quality and control runoff flow. <br /> California Environmental Protection Agency <br /> 0 Recycled Paper <br />