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Based on the conclusions reached by GAS (1991), Falcon Energy extracted and removed <br /> several thousand gallons of petroleum hydrocarbon impacted groundwater <br /> In January 1994, PHSEHD directed that the three monitoring wells be sampled to assess <br /> current groundwater conditions beneath the site Mr. Dana Booth, Consulting Geologist <br /> was retained by Mrs Yeanng to conduct the work Mr Booth supervised the <br /> resurveying, redevelopment of monitoring wells, and water sample collection of each of <br /> the three existing monitoring wells On March 7, 1994 the following groundwater <br /> conditions were reported to exist at the site <br /> (1) A product layer of 0 03 foot thickness was measured at PT-MW-3, <br /> (2) The water samples from PT-MW-1 and PT-MW-2 reportedly contained TPH-g <br /> and BTEX concentrations significantly above established Maximum Contaminant <br /> Levels (MCL's), <br /> (3) The groundwater gradient was calculated at 0 003 toward the southwest (using a <br /> 08 <br /> relative density for the product layer) <br /> A tabulation of groundwater monitoring data is presented in Table 1 <br /> Two water samples were collected (PT-MW-1 and MW-2) and transported to West <br /> Laboratories, Davis, California under chain of custody documentation The water <br /> samples were analyzed using USEPA Test Method 602 for benzene, toluene, <br /> ethylbenzene, and xylene and 8015M for TPH-gasoline <br /> Analytical reports for these two water samples were reported to contain maximum <br /> concentrations as follow TPH-gas (23,000 pg/l), benzene (2,000 Pg1l), toluene (3,500 <br /> p g/l), ethylbenzene (2,800 µg11), and xylene (2,800 pg/1) No water sample was <br /> collected from monitoring well PT-MW-3 <br /> A tabulation of groundwater analytical laboratory results from past monitoring events is <br /> presented as Table 2 <br /> The onsite soil stockpile from the UST removal was reportedly sampled on February 7, <br /> 1994 Sax soil samples were reportedly collected from the stockpile using a modified <br /> USEPA Test Method SW-846 procedure for composite soil sampling. The soil samples <br /> were placed in brass sleeves and preserved on ice and transported under chain of custody <br /> for analysis by West Laboratories, Davis, California Three of these soil samples were <br /> analyzed for BTEX using USEPA Test Method 8020, TPH-g using USEPA Test Method <br /> 8015M, diesel and motor oil using USEPA Test Method 5520B All analytical sample <br /> results were reported to contain analytes below analytical method detection limas <br /> i <br /> Mamrm <br /> �D\Environmenta"aarTexaco\WorkplanND42003 wpd 8 <br />