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D <br /> ' D NOV 4 2008 475 14th Street,Suite 400 <br /> yn ec ENVIRONMENT HEALTH <br /> California 94612 <br /> HEALTH PH 510.836.3034 <br /> ' consultants PERMIT/SERVICES FAX 510.836.3036 <br /> www.geosyntec.com <br /> 31 October 2008 <br /> ' Ms. Amy Terrell <br /> California Regional Water Quality Control Board NOV 4 2008 <br /> Central Valley Region ENVIRONMENT HEALTH <br /> 11020 Sun Center Drive, Suite 200 PERMIT/SERVICES <br /> Rancho Cordova, California 95670-6114 <br /> Subject: Results of 2008 Semi-Annual (August) Groundwater Monitoring and <br /> Remediation Pilot Study Monitoring <br /> Western Farm Service, Inc., Vernalis, California Facility <br /> ' Monitoring and Reporting Program No. R5-2007-0825 <br /> ' Dear Ms. Terrell: <br /> This letter transmits the Annual Groundwater and Remediation Pilot Study Monitoring report for <br /> ' the Western Farm Service, Inc. (WFS) facility located at 35100 South Highway 33 in Vernalis, <br /> California (the "Site") (Figure 1). The work described in this report was performed in <br /> ' compliance with the California Regional Water Quality Control Board, Central Valley Region <br /> (RWQCB) Monitoring and Reporting Program No. R5-2007-0825 (MRP No. R5-2007-0825), <br /> dated 15 November 2007. <br /> ' BACKGROUND <br /> The Site monitoring well network consists of seven groundwater monitoring wells at locations <br /> shown on Figure 2. Wells MW-1 through MW-5 were installed in November and February <br /> 1998. A sixth well, MW-6, was installed in June 2002 as an intergrid monitoring well in the <br /> ' Initial Remediation Pilot Study area. In early 2006, the surface casing was inadvertently <br /> damaged and MW-6 was subsequently destroyed in August 2007. Two new monitoring wells, <br /> MW-6R and MW-7, were installed from 26 to 28 August 2007 to monitor the performance of the <br /> Expanded In-Situ Groundwater Remediation Pilot Test (the "Expanded Pilot Test"). Monitoring <br /> Well MW-1 is no longer sampled as part of the current Site Monitoring and Reporting Program. <br /> ' Well construction details are summarized on Table 1. <br /> P:\PRJ2003REM\WFS\VER\VERG\3Q08\Report Text\3Q08 Report WFS-VER.doc <br /> ' engineers I scientists I innovators <br />