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1 <br /> private well located on the DJJ Co. P P yro ert , about 250 <br /> feet south of the site of Husky Crane s removed UST s, but no <br /> ' details are available. <br /> There is also a private well on the Husky property 200 feet <br /> t southesterl y from the tank site; a review of company records did <br /> not produce any information concerning pump depth , perforated <br /> intervals, or capacity. The well is used to provide water for <br /> t company operations_ <br /> PRIOR USAGE OF THE REMOVED TANKS <br /> ' The 500 & 1 ,000 gallon UST 's had both contained gasoline for use <br /> in fueling company vehicles and heavy equipment. Thet had been <br /> installed prior to the current owners purchase of the property <br /> ' in 1984, and no records are available concerning installation <br /> date (s) or usage prior to that time. The pump island and tanks <br /> were removed by company personel sometime prior to May, 1987; <br /> there are no records on the removal or oisposxtion of the tanks, <br /> ' and the work was not permitted or witnessed by County personel . <br /> SUMMARY OF PRIOR INVESTIGATIVE WORK <br /> On September 5, 1991 , Husky Crane, Inc. submitter an Application <br /> for Underground Tank Closure Permit to the San Joaquin Co. EHD, <br /> (Exhibit D, ) for one ( 1 ) 500 gallon and one ( 1 ) 1 ,000 gallon <br /> ' gasoline tank. As noted above, the tanks had been remo4ea in <br /> 1986 or 1987 , but that work had not been witnessed by San Joaquin <br /> Co. personel . <br /> On October 15, 1991 , the site of the removed UST s was entered, � <br /> and three L3) soil samples were taken: one at 14 bg' from the <br /> ' north end of the former tank site, one at 14 ' bgl from the south <br /> end , and the mrd one at 6` bgl from the east side, adjacent to <br /> the SJJ Co. property line. A composite sample was also taken <br /> from the removed spoil pile, which was temporally stored on the <br /> northwest side of the excavation. The samples from the north <br /> side (HC-1N, ) and the south side (HC ?S, ) were analyzed for BTEX, <br /> TPH-G, TPH--D, total lead, and priority polutants. The sample <br /> ' from the east side (HC--3E, ) was analyzed only for TEPH. The <br /> composite sample from the spoil pile was tested for BTEX , TPH-G, <br /> TEPH, and total lead. <br /> ' Laboratory results revealed that BTEX & volatile organics were <br /> below detection limits In all samples, but TPH-G, TPH--D, motor <br /> oil , and total lead were present in most of the samples; refer to <br /> PIate VI. The removed spoil was returned to the hole pending <br /> further work. Exhibit E includes copies of County EHD field <br /> 1 3 <br />