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Coca-Cola Enterprises - West <br /> Job No. 90054 <br /> 9/27/90 <br /> San Joaquin County Air Pollution Control District issued a revised aeration permit for <br /> l uncontrolled soil aeration on site. <br /> 3.0 FIELD PROCEDURES a <br /> The field investigation was conducted by USTEC from May 8, 1990 to September 27, 1990. <br /> The investigation consisted of a soil gas survey, drilling and logging of soil test borings, <br /> subsurface soil sampling, soil vapor monitoring, groundwater monitoring well construction, <br /> groundwater sampling, and soil aeration. All work was conducted in general accordance with <br /> it the California Site Mitigation Decision Tree Manual, the Leaking Underground Fuel Tank Field <br /> (LUFT) Manual, and the California Well Standards Bulletin 74-90. All work was conducted <br /> under the supervision of a USTEC geologist registered in the State of California. The <br /> procedures used by USTEC personnel during the field investigation are described in the <br /> following sections. <br /> k 3.1 UTILITIES <br /> The site was supplied with both water and sewer services by the City of Stockton. Several <br /> 1Aunderground utilities were identified running parallel to Wilson Way, School Street and <br /> Roosevelt Street within the street right-of-way prior to the start of field activities. All utilities <br /> were found to be above the water table. Since the identified utilities are above the water table, <br /> the utilities should not enhance the Y <br /> migration of dissolved hydrocarbons at the Stockton site. <br /> j 3.2 SOIL GAS SURVEY <br /> A preliminary.field assessment was conducted at the site on May 9 and 10, 1990. The <br /> ' preliminary assessment consisted of a soil gas survey designed to estimate the lateral extent of <br /> petroleum hydrocarbon contamination found during the tank removal operations at the site. <br /> The soil gas survey was used in the field as a basis for the location of groundwater monitoring <br /> wells and soil test borings. The soil gas survey report is included as Appendix B. <br /> 3.3 DRILLING AND SUBSURFACE SOIL SAMPLING <br /> - r <br /> Thirteen borings were drilled at the Coca-Cola site to-evaluate-the_vertical-and lateral extent----------- <br /> 5 <br /> xtent___ _5 <br /> i <br />