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California Regional Water Quality Control Board - Central Valley Region Robert Schneider, Chair Winston H.Hickox Gray Davis Secretary for Sacramento Main Office Governor Environmental Internet Address: http://ww,v.swrcb.ca.gov/—nvgcb5 Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 Phone(916)255-3000•FAX(916)255-3015 17 April 2001 Jeff Fisher McGah and Peterson San Joaquin County Comm. Develop. Dept. P.O. Box 2086 1810 E. Hazelton Ave. Stockton, CA 95201 Stockton, CA 95205 Granite Construction P.O. Box 151 Stockton, CA 95201 QX-99-01, QUARRYEXCAVATIONAPPLICATION, TRACY, SANJOAQUIN COUNTY I have reviewed the Application Referral for Aggregate Mining near Tracy, San Joaquin County distributed by the San Joaquin County Community Development Department. The Application Number is QX-99-1. The document briefly describes plans to excavate 111 acres of a 137 acre site. The Application Referral doesn't indicate where the excavated material will be processed. If wastewater is generated (including wash water used to separate fines from sand or gravel) Waste Discharge Requirements (WDRs) will be required for the discharge of the process water into settling basins at the site. The property owner and the aggregate processing company shall submit a Report of Waste Discharge (RWD) at least 120 days prior to discharging wastewater at the site. Submittal of the RWD is required by California Water Code Section 13260. If groundwater dewatering is required, the owner/operator shall submit a RWD to apply for a National Pollutant Discharge Elimination System (NPDES) pen-nit at least 120 days prier to initiating dev,,atering activities. Depending on the Standard Industrial Classification (SIC) code of the final project, compliance with the National Pollutant Discharge Elimination System (NPDES) General Permit No. CAS000001 for Discharges of Storm Water Associated With Industrial Activities may be required. The SIC codes of activities requiring coverage are listed in the General Permit. In order to obtain coverage by the General Permit, the proponent must submit a Notice of Intent to comply with the permit (NOI) to the State Water Resources Control Board and a Storm Water Pollution Prevention Plan (SWPPP) must be prepared. Because construction associated with the project will disturb more than five acres or is part of a larger common plan of development that encompasses five or more acres, the property owner needs to obtain permit coverage under the National Pollutant Discharge Elimination System (NPDES) General Permit No. CAS000002 for Discharges of Storm Water Associated With Construction Activity. Before construction begins, the proponent must Submit an NOI to comply with the permit to the State Water California Environmental Protection Agency ila Rect•clerl Paper The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. For a list of simple ways you can reduce demand and curt your energy costs,see our Web-site at http://www.swrcb.ca.gov/nvgcb5