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' URS <br /> 1 MEWED <br /> NOV — 3 2005 <br /> October 28, 2005 ENVIRONMENT HEALTH <br /> PERM(T9SEMACES <br /> L Ms. Karen Niiya 06a2 <br /> Regional Water Quality Control Board—Central Valley Region <br /> 11020 Sun Center Drive#200 <br /> ' Rancho Cordova,California 95670 <br /> Reference: Third Quarter 2005 Groundwater Monitoring and Annual Report <br /> Deuel Vocational Institution—Sewer Treatment Plant Ponds <br /> 23500 Kasson Road in Tracy,California <br /> URS Project No. 17322204.03001 <br /> ' Dear Ms.Niiya: <br /> URS Group,Inc. (URS) is pleased to submit this report presenting the results of groundwater monitoring <br /> activities conducted in September 2005 and summarizing groundwater monitoring activities conducted <br /> from the fourth quarter 2004 through the third quarter 2005, adjacent to the Sewer Treatment Plant <br /> Ponds at Deuel Vocational Institution (DVI), located at 23500 Kasson Road in Tracy, California. This <br /> report has been prepared on behalf of the State of California — Real Estate Services Division (RESD) <br /> under Contract No. 3023892,and concludes groundwater monitoring at the site. <br /> Please be advised that this document represents the completion of investigation activities at this <br /> site.All activities were performed in accordance with permit number CA0078093. <br /> BACKGROUND <br /> DVI is a State of California correctional facility with various land uses.A site location map and a facility <br /> map are provided as Figures 1 and 2, respectively. A site plan is provided as Figure 3. Much of the land <br /> is used for inmate housing, and most of the remaining land supports facility operations. DVI's <br /> maintenance building is located east of the inmate housing facility and includes a maintenance garage <br /> ' and offices. A gasoline and diesel underground storage tank(UST) site was formerly located to the west <br /> of the maintenance garage. The former UST and dispenser locations are covered with asphalt and <br /> concrete. <br /> The land use activity surrounding DVI is primarily agricultural. A Union Pacific Railroad track fomes <br /> the northwest boundary of the DVI property. <br /> On April 8, 2003, URS drilled and installed six 2-inch-diameter groundwater monitoring wells (MW-12 <br /> and MW-19 through MW-23) adjacent to the maintenance building. These wells are used to monitoring <br /> the petroleum-impacted groundwater at the site. The current groundwater monitoring program for the <br /> site includes biannual sampling of all five site wells and quarterly sampling of MW-12 and MW-19 <br /> through MW-23. <br /> URS Group Inc. <br /> Crown Corporate Center <br /> 2870 Gateway Oaks Drive,Suite 300 <br /> Sacramento,CA 95833 <br /> Tel:916.679.2000 KAWpmc U2204�uel VoGktnnl lanflumlonMP P r&QMR\3 Qn 05DVI-b P-3QMR05 Repon.o <br /> Fax:916.679.2900 <br />