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SECOR www.secor.com <br /> _ INTERNATIONAL 3017 Kilgore Road,Suite 100 <br /> r' S E C O R INCORPORATED Rancho Cordova,CA 95670 <br /> _. <br /> •. 916-861-0400 TEL <br /> 916-861-0430 FAX <br /> 0 <br /> Ik <br /> September 24, 2004 (� �( (J� � <br /> Lfl [R FF V/ice I_)i %0 a <br /> Ms. Victoria McCartney SEP 2 7 2004 <br /> San Joaquin County Environmental Health Department ENVIRONMENT- HEALTH <br /> 304 East Weber Avenue, Third Floor PERMIT/SERVICES <br /> Stockton, California 95205 f �a <br /> \ AP,,,,,, <br /> � <br /> RE: Work Plan for Monitoring Well Installation V <br /> Former Chevron Service Station 9-0557 , Y <br /> 139 South Center Street <br /> Stockton, California <br /> SECOR Project No.: 77CH.90557.03.0870 <br /> Dear Ms. McCartney: �T r <br /> SECOR International Incorporated (SECOR), on behalf of Chevron Environmental <br /> Management Company (Chevron), presents this work plan (work plan) for monitoring well <br /> installation at the above-referenced site. This work plan has been prepared to address <br /> recommendations proposed in SECOR's 2004 Site Assessment-Report, dated June 11, <br /> 2004. This work plan includes a brief discussion of the site, proposed scope of work, and a <br /> schedule. <br /> SITE DESCRIPTION <br /> The site is located at 139 South Center Street in Stockton, California (Figure 1). Former <br /> station facilities included two pump islands under a common canopy, three double-walled <br /> steel underground storage",tanks (USTs), one double-walled steel used-oil UST, and a <br /> station building. ' Locations of former station facilities are shown on Figure 2. The area <br /> surrounding the site is zoned primarily for commercial land use. Topography in the area of <br /> the site is relatively flat, and is approximately 12 feet above mean sea level (msl). The <br /> nearest surface water bodies are the Mormon Slough located approximately 1/4-mile south <br /> of the site, the Yacht Harbor located approximately 1/4-mile north of the site, and the Port of <br /> Stockton located approximately one mile west of the site. <br /> PROPOSED SCOPE OF WORK <br /> The scope of work proposed for this assessment includes the advancement of one cone <br /> penetrometer test (CPT) boring and the installation of one deep groundwater monitoring <br /> well. The location of the proposed CPT boring and groundwater monitoring well is depicted <br /> on Figure 3. <br /> A summary of field and laboratory procedures to be followed during these assessment <br /> activities is included in Attachment 1. The specific scope of work is described below. <br /> I:\Chevron\90557\REPORTS\2004\WP,for Monitoring Well Installation-2004.doc SECOR International Incorporated <br />