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California Regional Water Quality Control Board Central Valley Region \ Robert Schneider,Chair Winston It. Hickox Gray Davis Secretaryfor Sacramento Mahn Office Governor Environmental Internet Address: http://www.swrcb.ca.gov/-rwgcb5 Protection 3443 Rouder Road,Suite A,Sacramento,California 95827-3003 ^1^ Phone(916)255-3000•FAX(916)255-3015 ✓�- n�/I 29 January 2002w N 3 0 Vol 2 Leanne Mueller Richard Kelly U�`E/opm��ll� San Joaquin County Comm. Develop. Dept. PMC Pacific Materials 1810 E. Hazelton Ave. 6601 Koll Center Parkway Stockton, CA 95205 Pleasanton, CA 94566 Lonestar California, Inc. P.O. Box 5252 Pleasanton, CA 94566 QX-01-02, QUARRYEXCA VA TIONAPPLICA TION, TRACY,SAN JOAQUIN 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-01-02. The document briefly describes plans to excavate 688 acres. The excavated material will be processed on-site. The excavations will not extend to the depth of groundwater. �) 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. California Water Code Section 13260 requires submittal of the RWD. If groundwater dewatering is required, the owner/operator shall submit a RWD to apply for a National Pollutant Discharge Elimination System (NPDES)permit at least 120 days prior to initiating dewatering activities. Ll Depending on the Standard Industrial Classification(SIC) code of the final project, compliance with the 11 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 Resources Control Board and a SWPPP must be prepared. If there are any questions about this process California Environmental Protection Agency CO Recycled 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 cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/mgcb5