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I S 16 January 2001 J AGE-NC Project No 98-0505 ' Page 5 of 9 ' Immediately upon retrieval, samples were transferred into three 40-m1 EPA-approved VOA vials containing 0 5 ml 18% hydrochloric acid as a sample preservative The samples were Iogged an a chain-of-custody form,stored in a chilled container and transported under chain-of-custody to MAI, ' a California Department of Health Services (DHS)-certified laboratory The ground water samples were analyzed in accordance with ' 0 EPA Method 8015M modified for TPH-g, 0 EPA Method 8020 for BTEX and MTBE, and ' • EPA Method 8260M modified for DIPS, ETBE, MTBE, TBA, TAME, methanol, and ethanol, EDB and 1,2-DCA I 3 8 SURVEYING The casing elevation of each new well installed for the Comfort Air investigation was surveyed relative to the existing monitoring wells On 07 November 2000, AGE surveyed a reference point on the top of each newly installed ground water monitoring well casing at the site to the nearest 0 01-foot relative to MW-1 with an elevation of 7 56 feet above mean sea level (msl) The results of the monitoring well survey are contained in Table 1 3 9 DISPOSAL OF HYDROCARBON-IMPACTED SOIL On 20 December 2000, a total of nine 55-gallon drums (approximately 3 tons) of soil were loaded, transported and disposed at Forward Landfill in Manteca The disposed soil was generated during ' the October monitoring well installation activates Soil disposal manifests signed by Forward Landfill are included as Appendix E 4.0. FINDINGS Soil descriptions, stratigraphy,Ysite strati a h � and ground water elevations were determined from field data P Hydrocarbon-impact to soil and ground water is characterized from laboratory analytical data I I41 SOIL PROFILE Generally,tan to brown,damp to moist clay with silt and sand and sandy clay were encountered from Advanced GcoEnvlronmevW,Inc