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. 02 May 1996 AGE Project No. 95-0108 Page 5 of 7 communications from Park Environmental to the PHS-EHD indicated that petroleum hydrocarbons were detected in the excavation soil samples; however, analytical results of soil sample analysis were not submitted to the PHS-EHD. On 8 March 1994, three additional soil samples were collected from the excavation by Park Environmental. Similar to the February 1994 samples, verbal communications from Park Environmental to the PHS-EHD indicated that petroleum hydrocarbons were detected in these samples; however, analytical results were not submitted to the PHS-EHD. 3.6. EXCAVATION SOIL SAMPLING, NOVEMBER 1994 On 03 November 1994, representatives of Geological Audit Services, Inc. (GAS) collected three soil samples(LC-S; LC-N; LC-W) from the floor of the excavation. The soil samples were collected to determine if impacted soil was present in the excavation. Sample collection was witnessed by representatives of the PHS-EHD. . The samples were transported under chain-of-custody to McCampbell Analytical, Inc. in Pacheco, California and analyzed for TPH-d. TPH-d was detected in sample LC-W (west end of the excavation) at 4,800 ppm. TPH-d was not detected in samples LC-S or LC-N. All samples were collected from depths between 25.5 feet and 27.5 feet bsg. Approximate locations of the soil samples are illustrated on Figure 2. 3.7. EXCAVATION OF HYDROCARBON-R%IPACTED SOIL, NOVEMBER 1994 On 29 November 1994, approximately 100 cubic yards of impacted soil was excavated from the westem portion of the former UST area under the direction of GAS. Excavated soil was stockpiled adjacent to the excavation. A total of five soil samples were collected from the floor and sidewalls of the excavation. Samples were collected using a metric soil sample pre-loaded with two clean 2- by 3-inch brass sleeves. Upon collection,the ends of the leading brass sleeve were covered with aluminum sheets, capped and sealed with tape. The samples were placed in a chilled container and transported under chain-of-custody to McCampbell Analytical, Inc. (MAI) of Pacheco, California. All soil samples were analyzed for TPH-d in accordance with EPA method 8015. TPH-d was detected in the sample collected from the west wall (WW-1; 28 feet) at a concentration of 14,000 ppm. Petroleum hydrocarbons were not detected in the other samples collected on 29 November 1994. Analytical results of soil samples are included in Table 4. The laboratory report (MAI Lab ID 42669 to 42673) and chain-of-custody included in Appendix C.