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TATE OF CALIFORNIA P GEORGE DEUKMEJIAN,Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— °�''•, <br /> CENTRAL VALLEY REGION ..� <br /> 3443 ROUTIER ROAD <br /> SACRAMENTO,CA 95827-3098 <br /> 22 February 1990 EC E"PY"T 01) <br /> FE.B26fiM <br /> lVIR�(�i�Ef�TRL HEALTH . . <br /> Ms. Diane Hinson PERMIT/SERVICES <br /> Supervising REHS <br /> San Joaquin County <br /> Public Health Services _ <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton .CA_ ._95201 . <br /> CITY OF STOCKTON, POLICE. FACILITY, 22 EAST MARKET STREET, STOCKTON <br /> PROBLEM ASSESSMENT REPORT <br /> We have reviewed the 15 January 1990 Problem. Assessment Report prepared <br /> for this site -by WaterWork. The investigation included. installation and <br /> sampling of one ground water moni.toring. well in the vicinity of a leaking <br /> underground fuel pipeline on-site: <br /> Although no petroleum hydrocarbons were detected in a sample from the- <br /> monitoring well , the results cannot be considered conclusive because the <br /> maximum allowable laboratory holding t.i me was exceeded for the sample. <br /> In addition, the gradient of ground water flow at the site may be <br /> influenced by extraction of ground water from -a production well located <br /> within the building adjacent to the releasearea. <br /> At a minimum, the mollitoring well and the production well within- the <br /> building should be sampled to establish .cur-rent water. quality conditions. <br /> If pollutants are detected, it may be necessary to conduct a more detailed <br /> investigation to-determine the gradient and the-extent of impacts to water <br /> quality. <br /> ---If you :have a-ny"quest'ions,-pl ease'call me at (916) 36_1-573f7. w <br /> THOMAS D. PELTIER <br /> Engineering Geologist <br /> TDP/tdp <br /> s a � <br />