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KLEINFELDER <br /> 3 BACKGROUND <br /> The site is located near the southwest corner of Chrisman Road and Bates Road in Tracy, San <br /> Joaquin County, California and is proposed to be a Package Sewage Treatment Facility for the <br /> proposed 78 acre Linne Estates Subdivision. The treatment plant will serve 150 residential <br /> parcels. The treatment plant is sized to handle 55,000 gallons per day. Wastewater treatment <br /> will consist of activated sludge in a batch treatment process, partial denitrification, disinfection, <br /> and discharge to shallow emitters. <br /> In accordance with the RWQCB Waste Discharge Requirements (WDR) Linne Estates, LLC is <br /> required to monitor groundwater quality conditions upgradient and downgradient of the treatment <br /> plant and leach fields. Kleinfelder prepared an initial workplan for the characterization of <br /> baseline groundwater quality at the site prior to construction of the treatment plant. Three <br /> monitoring wells (MW1-MW3) were installed in August 2003, developed and initially sampled <br /> in September 2003. Kleinfelder has conducted quarterly groundwater sampling and reporting <br /> for the third and fourth quarters 2003 and the four quarters of 2004. <br /> A revised treatment plant layout presented in the proposed Report of Waste Discharge prompted <br /> the RWQCB to require Linne Estates, LLC to provide additional groundwater monitoring wells <br /> to better characterize groundwater quality at the site. In October 2004 Kleinfelder installed two <br /> additional monitoring wells (MW-4 and MW-5). Due to a conflict between the original location <br /> of MW-4 and the proposed storm water pond, the well is required to be re-located. <br /> 34091.E01/ST05R040/JZ:Iv Page 3 of 9 <br /> ©2005,Kleinfelder,Inc. January 13,2005 <br />