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Monitoring Well Installation Work Plan Erti,�l 2 5 2001 <br /> MOORE TRUCK LINES R� <br /> 3400 Newton Road, Stockton, California <br /> 1.0. INTRODUCTION <br /> At the request of Mr. Eric Weilburg, Advanced GeoEnvironmental, Inc (AGE) has prepared this <br /> monitoring well installation work plan for Moore Truck Lines located at 3400 Newton Road, <br /> Stockton, California (site). The site location is illustrated on Figure 1. Structures, monitoring well <br /> and boring locations on the site are illustrated on Figure 2. Site history and findings from previous <br /> investigations at the site are detailed in the AGE-prepared Preliminary Investigation and Evaluation <br /> Report (PIER), dated 15 September 1999. <br /> The purpose of the investigation is to evalute the extent of petroleum hydrocarbon-impacted ground <br /> water at the site. This work plan provides the scope of work and procedures to be implemented to <br /> advance soil borings and monitoring well installation and sampling. Proposed monitoring well <br /> locations are presented in figure 2. <br /> This work plan has been prepared at the request of Mr. Weilburg to expedite the closure process and <br /> was prepared in accordance with the Regional Water Quality Control Board's Tri-Regional Board <br /> Staff Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sites <br /> guidelines for the investigation of UST sites. <br /> 2.0. BACKGROUND <br /> The site is located between North Wilson Way and Cherokee Road on Newton Road west of <br /> Highway 99. The property is located in a topographically flat area at an approximate elevation of 30 <br /> feet above mean sea level in Stockton, San Joaquin County, California. The site is within the <br /> northeast quarter of Section 23, Township 2 North, Range 6 East, Stockton West, California <br /> (Stockton West Quadrangle, 7.5-Minute USGS Topographic Series, 1968, photo revised 1987). <br /> 2.1. GROUND WATER DEPTH AND FLOW DIRECTION <br /> Depth to ground water in the one on-site well (MW-1) was 53.55 feet below surface grade (bsg) <br /> during the most recent monitoring event(March 2001). Monitoring data from MW-1 was combined <br /> with monitoring well data collected from the adjacent former Cherokee Truck Stop site(3 53 5 East <br /> Cherokee Road) collected on 28 March 2001 to determine the approximate ground water flow <br /> direction. Ground water flow direction was inferred to be northeasterly at a gradient of <br /> approximately 0.001 ft/ft. <br /> Advanced GeoEnvironmental,Inc. <br />