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IA t 26 April 2011 i# AGE-NC Project No. 95-0104 r Page 4 of 12 { and Ground Water Contamination, dated 05 Augt1 t 1988)was prepared by Applied GeoSystems and submitted to the EHD. • In December 1992, monitoring well MW-2 was installed southwest of the former UST area, to a total depth of 110 feet. MW-2 was installed to replace well MWA, which became dry due to decreasing ground water levels. Petroleum hydrocarbons were not detected in soil samples collected d6 ring ,the construction of MW-2; however, benzene and halogenated volatile organic compounds (HVOCs) were detected in the initial ground water samples. Analytical results of soil and ground water samples are summarized in Tables 2 and 3. Boring logs are presented in Appendix C. A report of findings (Monitoringl Welb! Installation Report, dated $ December 1992) was prepared by Geological Audit Services and submitted to the EHD. E • On 29 and 30 September 1993, ground water onitoring wells MW-3 and MW-4 f were installed down-gradient of the former UST area toltotal depths of 100 and 105 feet, respectively. Petroleum hydrocarbons were not detected in selected soil samples; however a single halogenated hydrocarbon compound (bromomethane) was detected in soil sample MW4-45 at 0.43 pg/g (micrograms per gram).Analytical results of soil samples are summarized in Table 2. Boring logs are presented in Appendix C. A report of findings (Quarterly Report,ll dated October 1993) was 1 prepared by Geological Audit Services and submitted ito the EHD. • On 04 April 1994, soil vapor extraction well VW-11 was installed at the site near the { center of the former UST. TPH-g was detected in sample VW1-25 at a concentration of 14,000 mg/kg. Analytical results of soil samples are summarized in Table 2. Boring logs are presented in Appendix C. A report of findings (Quarterly Report, April 1994, dated 10 May 1994)was prepared by Geological Audit Services and submitted to the EHD. • On 27 Novemberand 06 December 1996,ground wate,monitoring wells MW-5 and I MW-6 were installed down-gradient and east of the former UST area to total depths of 87 and 83 feet bsg, respectively. Wells MW-5 and MW-6 were completed as i ground water monitoring wells using 2-inch diameter PVC casing with 0.020-inch slotted screen installed from approximately 67 feet to 87 feet bsg in MW-5 and from 63 feet to 83 feet bsg in MW-6 with blank casing' extended to the surface. Laboratory analysis of soil samples collected from MWS 5 and MW-6 did not detect # any constituents of concern. Analytical results of soil samples are summarized in Table 2. Boring logs are presented in Appendix,C. A 'report of findings (Quarterly E Report-December 1996, dated 19 February 1997) was prepared by AGE and submitted to the EHD and RWQCB. p i Between 18 March and 16 April 1999 and 22 July and 14 December 1999, a soil vapor extraction (SVE) pilot test was initiated ate', site by applying a vacuum at Advanced CeoEnvironmental,Inc.