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83 WES <br /> SUITE 12 MARCH LANE November 22, 1991 <br /> STOCKTON,CA 95207 <br /> sM PHONE:(209)476-1635 <br /> MANAGERS DESIGNEAS/CO MLTAKM <br /> Mr. Theodore Wittmayer <br /> Attorney at Law <br /> Stone Brothers and Associates <br /> 1024 West Robinhood Drive 'L3 25262�d& <br /> Stockton, CA 95207 <br /> 0 0 <br /> Subject: Suggested Scope of Tank Site Investigation r cv 1991 <br /> Montgomery Ward Auto Center, Stockton, California <br /> Dear Mr. Wittmayer, <br /> 9 <br /> Per our discussion during the meeting November 113, 1991, the Following issueF o�II31 f% � <br /> addressed in your letter to Montgomery Ward: <br /> 1. The investigation proposed by Montgomery Ward's contractor, Environmental Audit, <br /> needs to focus specifically on defining the lateral and vertical extent of gasoline compound <br /> presence related to the former underground storage tank (UST) location. <br /> This should include investigation of the compound extent in soil and should alsc address <br /> the possibility that gasoline compounds have reached groundwater. If a groundwater <br /> investigation is not proposed, sufficient rationale should be offered as to why such an <br /> investigation is not needed. <br /> 2. The concrete slab which remains buried beneath the former UST location should be <br /> removed and disposed of, and soil samples should be collected from beneath the slab. <br /> This procedure is generally required by the San Joaquin County Environmenta Health <br /> Division (EHD) before site closure can be considered. <br /> 3. The fuel product piping which remains buried beneath the parking lot on the viest side <br /> of the Montgomery Ward Auto shop should be removed and disposed of properly. This <br /> is a requirement of the Tri-Regional Board Staff Recommendations for Preliminary <br /> Evaluation and Investigation of Underground Tank Sites ("Tri-Regional Gui elines") <br /> published by the State of California, dated .August 10, 1990. <br /> RL has been WESTON s experience that the above stated procedures are the minimum th t would <br /> be required by the County EHD in order to further evaluate the site and eventually gain closure <br /> of the tank site. <br /> Should you have any questions regarding these suggestions, please do not hesitate to con I tact me. <br /> Sincerely, <br /> ROY <br /> �F. WESTON, INC. <br /> Robert M. Sengebush, R.G. <br /> RMS/cmc Project Manager <br /> cc: Paul Sundberg <br /> RAf$/W[ fAYER.PWP <br />