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California &gional Water Quality Control Board <br /> vCentral Valley Region <br /> Robert Schneider,Chair <br /> Winston H.Hickoz Gray Davis <br /> Secretaryfor Sacramento Main Office Governor <br /> Environmental Internet Address: http://www.swrcb.ca.gov/mgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 U <br /> Phone(916)255.3000-FAX(916)255.3015 <br /> 8 October 2002 <br /> O <br /> Deanna Walsh <FGTyF�00� O <br /> City of Lathrop % 9� <br /> 16775 Howland Road <br /> Lathrop, CA 95330 <br /> SCH#2001052059, DRAFT EIR FOR MOSSDALE LANDING URBAN DESIGN CONCEPT, <br /> LATHROP, SAN JOAQUIN COUNTY <br /> I have reviewed the Draft Environmental Impact Report(DEIR) and the Mossdale Landing Urban <br /> Design Concept for Mossdale Landing, Lathrop, San Joaquin County. The document package was <br /> distributed by the State Clearinghouse and is identified by State Clearinghouse No. 2001052059. This <br /> letter provides comments on the DEIR and identifies issues that may require further discussion. The <br /> Regional Board previously commented on this project in letters dated 15 May 2001 and 18 May 2001. <br /> Proiect Description <br /> The project consists of a 477.3-acre residential subdivision consisting of approximately 1,690 dwelling <br /> units. Development will be performed in seven phases over an eight-year period. The DEIR states <br /> wastewater will be treated in the existing Wastewater Treatment Plant No. 1 (Crossroads) and will be <br /> returned to the development for application. It has been brought to the attention of the Regional Board <br /> that the Crossroads treatment plant will not be available to treat the project's wastewater and that an <br /> entirely new treatment plant will be constructed adjacent to the Crossroads facility. The DEIR must be <br /> revised to correctly describe the wastewater treatment that is planned. <br /> The following additional comments on the DEIR are provided: <br /> Draft Environmental Impact Report <br /> The DEIR refers to treating wastewater from other developments (Calfia River Islands and Lathrop <br /> Station) in addition to the Mossdale Landing project. No other information is provided on the location <br /> of the other projects or how their wastewater will be handled. <br /> The DEIR describes interim conditions (until 2007) during which time the wastewater treated at WWTP <br /> No. 1 (Crossroads) would be returned to the project for storage and land application. The storage ponds <br /> are described as 16 feet in depth with a clay or synthetic liner. Because groundwater in the project area <br /> is shallow(approximately 10 feet) measures to protect the liners from damage from high groundwater <br /> conditions are likely needed. Based on descriptions presented in the Kleinfelder groundwater report <br /> (discussed later in this letter) a permit from the Department of Water Resources Division of Dam Safety <br /> California Environmental Protection Agency <br /> pia Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swreb.ca.gov/mgcb5 <br />