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J. H. KLEINFELDER & ASSOCIATES <br />File No. S-1716-2 <br />July 2, 1985 <br />Page 2 <br />IDENTIFICATION OF POTENTIAL SOURCES <br />Four potential sources areas were identified during our site visit of June 21, <br />1985. These included the following: <br />• above ground storage tank area <br />• transfer block and product loading areas <br />• four underground storage tanks <br />• one area of the facility where visible surface spillage <br />of petroleum products was noted <br />Investigative procedures will include shallow soil borings, field screening of soil <br />samples using a portable organic vapor analyzer, laboratory analyses of samples for <br />analytical parameters specified by the county and precision tank testing of the <br />underground fuel storage tanks and associated lines. Work elements for investigating <br />each potential source area are presented in the following sections of this report. <br />PRE -INVESTIGATION WORK <br />Prior to initiating any field work, the location of underground utility lines must <br />be established. Underground services alert will be utilized; however, locating on-site <br />lines may also require use of a line locater, metal detector or magnetometer survey. <br />A site plan will also be prepared. The site plan will be prepared from aerial photos <br />to be provided by Woolsey Oil. <br />ABOVE GROUND TANK FARM <br />During our site visit, we observed visible product stains in several areas inside <br />the walls of the tank farm. The gravels underlying the tanks also create highly <br />permeable conditions in this area. <br />