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22 October 2009 AGE-NC Project No. 00-0697 Page 9 of 10 is presented in Appendix G. • TPH-g and BTEX have not been detected from any wells on-site since May 2008 and February 2008,respectively.MTBE has not been detected in ground water samples collected from the site since November 2005; TAME and 1,2-DCA concentrations have not been detected from site wells since May 2005. Presently, the lateral and vertical extent of petroleum hydrocarbon-impacted ground water is defined. • Based on a plot of TPH-g and benzene versus time (Appendix E), a definitive trend of decreasing dissolved concentrations has been evident at the site from impacted well MW-3. Based on the last two sampling event performed in July 2008 and October 2008, TPH-g, BTEX,and the remaining analytes were all at non-detect levels. • A sensitive receptor survey identified one domestic well located at 13999 West Highway 12, one domestic water well located on the adjacent property at 15010 Glasscock Road,Lodi, CA,one domestic well located on-site at 13889 West Highway 12,Lodi,CA, and one test well located approximately 100 feet south of Highway 12 and Glasscock Road.Copies of the well driller's reports that were recovered are included in Appendix F; a summary of water wells located from the review of well driller's reports is included in Table 6 and a location of wells are depicted in Figure 8. • On 28 February 2008,AGE advanced five soil vapor borings(SV 1 through SV5)at the site to approximately 5 feet bsg. No target analytes were reported in the soil-vapor samples analyzed.The reported method detection limits are all,with the exception of EDB,below the ESLs (soil-gas screening levels). The soil-vapor data satisfies regulatory requirements recommended by both the California Human Health Screening Levels (CHHSLs) and the ESLs for evaluation of vapor intrusion. Analytical results of soil-vapor samples are summarized in Table 3. • AGE concludes that petroleum hydrocarbons remaining beneath the site appear to pose minimal risk to human health and beneficial use of ground water down-gradient from the site. 8.0. RECOMMENDATIONS Based upon data collected from the site, AGE recommends the following: • No further subsurface investigation at this time.The Terminous Market site has adequately assessed petroleum hydrocarbon-impacted soil and ground water associated with the UAR. • Consideration of the facility for closure as a low risk ground water site.From previous data, AGE has documented that petroleum hydrocarbon concentrations in ground water at the site Advanced GeoENvirommental,lime.