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595 East 11th Street, Tracy, CA November 8, 1993 <br /> CONCLUSIONS <br /> Main conclusions are as follows <br /> 1 Shallow groundwater level is currently at a depth of approximately 8-feet below grade No <br /> significant change in depth has occurred since March 1992 Groundwater flow direction is <br /> inferred to be to the northeast with a gradient of approximately 0 0029 vertical per horizontal <br /> feet This flow direction data shows that the flow direction has shifted from the northwest <br /> (March 1992) to the current northeast direction <br /> 2 Laboratory analysis data show that monitor well MW-2 and MW-3 contain TPHg and BTEX <br /> constituents Maximum hydrocarbon concentrations were found at well MW-2 located near the <br /> northeast corner of the site Monitor well MW-1 did not contain TPHg or BTEX No significant <br /> changes in TPHg or BTEX levels in the groundwater have occurred at MW-2 or MW-3 since <br /> the last sampling conducted in March 1992 However,BTEX was present at well MW-1 in <br /> March 1992 but not detected during this sampling event This may be due to the noted shift <br /> in groundwater flow direction to the northeast away from well MW-1 <br /> DISCUSSION <br /> The next quarterly groundwater sampling event will take place at the beginning of January 1994 RRM <br /> will contact the client 72-hours prior to conducting any field work <br /> If you have any questions regarding the contents of this report, please call Mr Matt Kaempf at(408)423- <br /> 4288 <br /> Sincerely, <br /> Remediation Risk Management, Inc <br /> Matt Kaempf <br /> Project Manager <br /> Re,%,icned by <br /> E y _ <br /> D id Glick " <br /> nior Geologist u , <br /> T� GF <br /> 3 <br />