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The domestic water well located about 85 southeast and <br /> downgradient from the site of the tank was sampled in the <br /> following manner: a faucet connected to the pump house was opened <br /> and allowed to run until the pump motor had locked on and run for <br /> about 10 minutes to insure that water from the aquifer was being <br /> discharged. Samples were taken by Mr. Hunter with properly <br /> prepared glass VOA 's, promptly sealed, labeled, and preserved <br /> pending transport to the lab for analysis. <br /> Samples were also collected from the stored spoil by driving <br /> clean brass tubes as deeply as possible into the pile; they were <br /> sealed, labeled and placed on ace. The preserved samples were <br /> transported to the laboratory by the geologist, with instructions <br /> to analyze all samples for DTEX & TRH-E. Exhibit G includes <br /> copies of the laboratory worksheets and chain of custody forms <br /> for that work. Those results are summarized in Tables II , III , & <br /> IV. <br /> The soil samples taken from the excavation, (Table II , ) revealed <br /> that the east wall was clean, and the minor amounts detected in <br /> the sample from south end of the west wail passed the leaching <br /> potential analysis worksheet, Only Toluene & Xylene from the <br /> sample taken from the side of the west wall were above the limits <br /> allowed by the worksheet. However , the two samples from the <br /> bottom contained fairly high levels of BTEX & TRH-G. Analysis of <br /> the sample from the domestic water well showed that all tested <br /> substances were below detection levels, indicating that the <br /> contamination had not reached that well . <br /> After analyzing the test results, it was decided that additional <br /> spoil removal would be the best method for removing the remaining <br /> contamination. On September 19, 1991 , Thorpe Oil personel <br /> removed the tree and fence from the west and south sides of the <br /> existing excavation in order to allow further investigative work <br /> in those directions. <br /> DETAILS OF SECOND EXCAVATION: On September 20, 1991 , W. Hunter , <br /> R.G. , packed up a soil sampling kit for FGL Environmental and <br /> drove to the location, arriving at 9: 30AM. Thorpe Oil Co. <br /> personel began removing spoil from west, ramping into the <br /> existing excavation in order to allow the backhoe to reach <br /> deeper. The soil consisted primarily of dark tan to brown sandy <br /> loam, with layers of clay and hard clayey sands. A streak of <br /> very sandy gray colored soil at the northwest corner and north <br /> wall at about 15 ' , just below the small shed , had a definite <br /> gasoline odor. The gray coloration may have been due to <br /> contaminiataon or the mineral content of the sediments; no free <br /> product was noted. Clean spoil was placed on the ground near an <br /> existing tree at the southwest corner of the pit, in a pile that <br /> 4 <br />