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20 March 1996 <br />' AGE-NC Project No. 95-0108 <br /> _ Page 5 of 7 <br /> are illustrated on Figure 2. <br /> 3.7. EXCAVATION'OF HYDROCARBON-IMPACTED SOIL, NOVEMBER 1994 <br /> On 29 November 1994, approximately 100 cubic yards of impacted soil was excavated from the <br /> western portion of the former UST area under the direction of GAS. Excavated soil was stockpiled <br /> adjacent to the excavation. <br /> A total of five soil samples were collected from the floor and sidewalls of the excavation. Samples <br /> were collected using a metric soil sample pre-loaded with two clean 2- by 3-inch brass sleeves. Upon <br />' collection, the ends of the leading brass sleeve were covered,�ith aluminum sheets, capped and.sealed <br /> N-6th tape. The samples were placed in"a chilled container and transported under chain-of-custody to <br /> McCampbell Analytical, Inc. (MAI) of Pacheco, California. All soil samples were analyzed for TPH-d <br /> in accordance with EPA method 8015. <br /> TPH-d was detected in the sample collected from the west wall (WW-1; 28 feet) at a concentration <br /> of 14,000 ppm. Petroleum hydrocarbons were not detected.in the other samples collected on 29 <br /> November 1994. Analytical results of soil samples are included in Table 4. The laboratory report <br />' (MAI Lab ID 42669 to 42673) and chain-of-custody included in Appendix C. <br />' 3.8. STOCKPILED SOIL SAMPLING, APRIL 1995 <br /> On 14 April 1995, a representative of AGE collected ten soil samples from the soil stockpile on site. <br />' Soil samples were collected using a metric soil sample pre-loaded with two clean 2- by 3-inch brass <br /> sleeves. Upon collection, the ends of the lead brass sleeve were covered with aluminum sheets, <br /> capped and sealed with tape. The samples were placed in a chilled container and transported under <br />' cliain-of-custody to MAI. The stockpile samples were composited by MAI into five samples for <br /> analysis of TPH-d and BTE&X: <br />' TPH-d was detected in each sample at concentrations as high as 1,110 ppm. Low concentrations of <br /> toluene and xylenes were also detected in the stockpile soil samples. Analytical results are <br /> summarized in Table 4. The laboratory report (MAI Lab ID 51728 to 51732) and chain-of-custody <br /> are included in Appendix D. <br /> 3.9, EXCAVATION OF HYDROCARBON-IMPACTED SOIL, APRIL 1995 <br />' On 25 April 1995, additional hydrocarbon-impacted soil was excavated from the former UST area <br /> under the supervision of AGE. Four soil samples were collected from the floor and sidewalls of the <br />