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California Regional Water Quality PAtrol Board vCentral Valley Region Robert Schneider,Chair (a 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 Bruce Coleman City of Lathrop 16775 Howland Road, Suite One Lathrop, CA 95330 CITY OFLATHROP ENVIRONMENTAL IMPACT REPORT PREPARATION, SAN JOA QUIN COUNTY I have reviewed the Notice of Preparation distributed by the City of Lathrop Community Development Planning Division in correspondence dated 27 December 2001. The document addresses expanding wastewater treatment needs for residential and commercial activities. The Regional Board has commented on Farmworld (28 July 2000), Landmark Lathrop Group (21 February 2001), Farmworld (again on 3 January 2001), City of Lathrop Water and Wastewater(17 May 2001), Mossdale Landing (18 May 2001), and River Islands (9 November 2001). Comments provided in the correspondence identified are relevant to the preparation of the EIR. The NOP describes expansion of the existing wastewater treatment plant No. 1 (Crossroads),the use of ponds to store wastewater and land application of treated wastewater. When new wastewater storage ponds are constructed, or new land application areas are planned, revision of the WDRs is required. 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 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 or the Storm water program, you may call Dani Berchtold at(916) 255-3383 or Phil Isorena at(916) 255-3398. Additional information can be found at the Storm Water website - http://www.swreb.caizovlstormwtrlindex.html. California Environmental Protection Agency rZd 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 htip://www.swrcb.ca.gov/rwgcb5