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r <br /> Advanced <br /> Geo Environmenta ., Inc . <br /> 16 October 2009 <br /> AGE-NC Project No. 09-1714 <br /> Mr. Dwayne G. McAllister <br /> STOCKTON ENVIRONMENTAL <br /> 319 East Banbury Drive <br /> Stockton, California 95207 <br /> Subject: Limited Subsurface Site Assessment Report <br /> DELTA COLLEGE CATERPILLAR CENTER (SHIMA) <br /> 5151 Pacific Avenue, Stockton, California <br /> Dear Mr. McAllister: <br /> At your request, Advanced GeoEnvironmental, Inc. (AGE) has prepared the enclosed Limited <br /> Subsurface Site Assessment Report for the property at 5151 Pacific Avenue, Stockton, California. <br /> The work is being performed as part of due diligence effort to investigate areas of potential <br /> environmental concern at the site, prior to demolition and reconstruction activities. <br /> The Central Valley Regional Water Quality Control Board requirements for the investigation of <br /> underground storage tank(UST) sites was used as guidelines for the investigation. The location of <br /> the site and its surroundings are illustrated in Figure 1; major features on the site and boring <br /> locations are illustrated in Figure 2. Upon your approval,a copy of this report will be transmitted to <br /> Mr. Mike Infurna, of the San Joaquin County Environmental Health Department (EHD). <br /> INTRODUCTION/BACKGROUND <br /> The subject area under investigation is the Agricultural and Natural Resource Yard/Shima Center, <br /> located at San Joaquin Delta College(SJDC),5151 Pacific Avenue,Stockton,California.It is AGE's <br /> understanding that the subject area will be demolished for new construction. The subject area is <br /> comprised of a shop/Caterpillar repair facility, an above-ground storage tank (AST), several <br /> agricultural buildings, and classroom area.A clarifier is reportedly present in the north west corner <br /> of the subject area. During a site visit of the subject area with representatives of Stockton <br /> Environmental, one "mechanic's pit" was identified within the primary shop building. It was later <br /> noted,by a SJDC representative,that the"mechanic's pit"was actually a water circulation chamber <br /> (irrigation pump/circulation tank) used as part of an irrigation systems course. The circulation <br /> chamber is currently empty of water, as it is no longer in use. <br /> 837 Rokid, Stockton,CA 1120 <br /> I A:phone (20')1467-1(106 • Fax (209)407 1 1 t8 <br />