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CECCHINI, CECCHINI AND GIOVANNOA7 FUELING ISLAND seasonal precipitation Ground water flow direction at the site has generally been to the northeast in recent quarters This flow direction is similar to regional flow direction interpreted from San Joaquin County Spring 1994 Ground Water Report Maps (San Joaquin County Flood, 1994) The less distinct flow pattern observed this quarter may be due to local pumping influences as well as precipitation factors BTEX continue to be found at low concentrations and were comparable to levels fou3id in previous quarters Benzene, although still at a relatively low concentration, has increased slightly compared to the previous quarter Concentrations of TPH as diesel remained relatively constant from previous quarters 3.3 GROUND WAFTER RECOVERY GNMMM REM EMATHON) As a result of the continued detectable TPH in well UST-1, interim remediation was initiated for this site in the Third Quarter of 1993 This quarter Mr Robert Cecchiru performed bi-weekly evacuation of water from Well UST-1 for a period of three months from October 1 to December 30, 1994 He performed the following tasks each visit a Measured water and product levels in the well UST-1 using an electric water level sounder and recorded the data 0 Evacuated approximately 55 gallons of water from well UST-1 using an electric submersible pump The volume of water pumped from the well was recorded o The water evacuated from well UST-1 was stored in DOT rated drums in a secure area of the site When a sufficient volume of water is accumulated at the site, the well owners will dispose of the purged water through a licensed recycler M Documents from the interim remediation activity are attached as Appendix C A total of 330 gallons of water was evacuated from well UST-1 from January 1 to March 30, 1995 F\6945400\1 OM95 RPT 4 Environmental Science&Engineering, Inc