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California RRional Water Quality Control Board vCentral Valley Region , Robert Schneider,Chair Winston H.Hickox Gray Davis Secretaryfor Sacramento Main Office Governor Environmental Internet Address: http://www.swrcb.ca.gov/—mgcb5 Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 Phone(916)255-3000•FAX(916)255-3015 9 November 2001 Brian Grattidge Ramon Batista State Clearinghouse City of Lathrop 1400 Tenth Street 16775 Howland Road, Suite One Sacramento, CA 95814 Lathrop, CA 95330 RIVER ISLANDS AT LATHROP, SCH#199311202 7, LATHROP, SAN JOAQUIN COUNTY I have reviewed the Notice of Preparation(NOP) SCH # 1993112027, distributed by the State Clearinghouse in correspondence dated 25 October 2001. The NOP describes construction of a residential/commercial development with a 300 acre employment center, a town center, a relocated and a new manna, 1,800 acres of residential land use, 350 acres of golf course, 180 acres of developed parkland, 1,575 acres of open space and lakes, and related public facilities and infrastructure to be developed in two phases. Section 12 of the NOP indicates the River Island wastewater would be treated at the City of Lathrop Wastewater Treatment Plant (WWTP)No. 1 (Crossroads) and the tertiary treated wastewater would be land applied on River Island agricultural lands,park grounds, and golf courses. Application areas on River Island are not included in the WWTP No. 1 Waste Discharge Requirements (WDRs). The disposal of treated wastewater to.new land application areas requires revision of the WDRs. Section 5 of the NOP indicates construction of an on-site WWTP is also being considered. If an on-site system is constructed or if wastewater is land applied outside the identified land application area for WWTP No. 1, then consistent with California Water Code Section 13260, the owners or developers are required to submit a Report of Waste Discharge at least 120 days prior to discharging wastewater. 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 pen-nit (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 S WPPP must be prepared. If there are any questions about this process California Environmental Protection Agency 0 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://w .swrcb.ca.gov/mgcb5