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N�/F N aii <br /> f S1 <br /> aril`O <br /> From Science to Solutions <br /> HPP—BTR MP#204.1 <br /> US Can-Welty Road <br /> Reports <br /> Accession#06102.20090323.001 <br /> April 3, 2009 <br /> Mr. M. Scott Mansholt <br /> Chevron Environmental Management Company <br /> 6111 Bollinger Canyon Road <br /> P.O. Box 6012 <br /> San Ramon, California 94583-0712 <br /> Subject: Annual 2009 Groundwater Monitoring and Sampling Report <br /> US Can—Welty Road <br /> 35275 Welty Road <br /> Vernalis, San Joaquin County, California <br /> Dear Mr. Mansholt: <br /> Science Applications International Corporation(SAIC)prepared this report at the request <br /> of Chevron Environmental Management Company(CEMC) for groundwater monitoring <br /> and sampling activities conducted at the US Can—Welty Road site (the site) in Vernalis, <br /> California(see Figure 1). The groundwater monitoring and sampling program for the site <br /> was initiated at the request of the California Regional Water Quality Control Board— <br /> Central Valley Region (RWQCB) in a December 2003 letter to CEMC 1. This report <br /> presents the results from the annual 2009 monitoring and sampling event. Monitoring <br /> wells MW-1, MW-2, and MW-3 are currently used to evaluate hydrologic and water- <br /> quality conditions at the site. Site features and the locations of the monitoring wells are <br /> shown on Figure 2. <br /> BACKGROUND <br /> SITE DESCRIPTION AND USE <br /> The site is located at 35275 Welty Road in Vernalis, California(see Figure 1), and is <br /> currently occupied by a paper insulation manufacturing company. The site was formerly <br /> owned by a container manufacturer(Hunter Container Company), and a can <br /> manufacturer(US Can Company). The site is in a rural and light-industrial area, and is <br /> bordered by Welty Road on the east, Highway 33 on the north, and agricultural fields <br /> south and west of the site. <br /> 1. RWQCB—Central Valley Region,2003. Offsite Soil and Groundwater Investigation,US Can/Welty Road,Vernalis, <br /> San Joaquin County. December 4. <br /> Science Applications International Corporation <br /> 3800 Watt Avenue I Suite#210/Sacramento, CA 95821 /tel: (916)974-8800/fax: (916)979-3735 1 saic.com <br />