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19 June 2000 AGE-NC Project No 96-0232 Page 7 of 35 detected In samples collected from wells MW-2 and MW-6B at concentrations of 150 and 110 pg/l,respectively Analytical results of ground water samples are summarized in Table 5 Laboratory analysis of a grab ground water sample collected from RDW-1 detected MTBE at a concentration of 11 gg/l (Table 7) A report of findings (Quarterly Report-June 1999, dated 13 September 1999) was prepared by AGE and submitted to the PHS-EHD and the RWQCB-CVR • August, September, November and December 1999 - Grab ground water samples were collected from RDW-1,laboratory analysis of the samples detected MTBE at concentrations of ranging from less than 1 gg/l to 18 pg/l The analytical results are summarized in Table 7 A report of findings (Monthly Report - February 2000, dated 20 March 2000) was prepared by AGE and submitted to the PHS-EHD and the RWQCB-CVR • February 2000- Ground water monitoring was performed at wells MWA, MW-2, MW-4, MW-5, MW-6 and MW-7 Ground water depths were recorded at approximately 7 feet bsg (Table 3), general ground water flow direction was towards the east-northeast at a general gradient of 0 002 (Figure 19) Laboratory analysis of ground water samples collected from wells MW-1,MW-2,MW-4,MW-6A,MW-6B and MW-7 detected MTBE at concentrations as high as 2,100 pg/l, dissolved TPH-g was detected in samples collected from wells MW-1 and MW-2 at concentrations of 680 and 66 pg/l, respectively Analytical results of ground water samples are summanzed In Table 5 A grab ground water sample collected from RDW-1 contained MTBE at a concentration of 7 7 pg/1 (Table 7) A report of findings (Monthly Report - February 2000, dated 20 March 2000) was prepared by AGE and submitted to the PHS-EHD and the RWQCB-CVR • March 2000 -Seven soil probe borings (P6, P7, P8, P9, P 10, P 11 and P 12) were advanced to depths of five feet bsg as part of a soli-gas survey to assess soil-gas organic vapor concentrations in the vadose zone near the existing fuel dispenser and UST system (Figure 2),boring logs for P6,P7, P8, P9, P10,PI 1 and P 12 are m Appendix B TPH-g,benzene and MTBE were detected In the P6 sample at concentrations of 600 Vg/l, 0 5 gg/l and 2 5 Pg/l, respectively Analytical results of soil-gas vapor samples are summarized In Table 8 A down-hole video camera probe was conducted on RDW-1, the domestic well serving Rocky's Restaurant The video probe revealed perforated well screen between 67 and 76 feet bsg,between 87 and 104 feet bsg and between 130 and 142 feet bsg, the bottom of the water well casing below 142 feet bsg was filled with silt Two ground water pumps were removed from the well prior to video camera probing activities, the bottom of the first pump (fire water) was set at 84 feet bsg and the bottom of the second pump (potable water) was set at 105 feet bsg AGE has been Informed that the sanitary seal of the well Is set at 50 feet bsg and a gravel pack around the casing extends from 50 feet bsg to total depth of the well A video log of the down-hole camera probe is Included with Appendix C Advanced GcoEn+ironmental,Inc