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KLEINFELDER - -- -"- - <br /> February 18, 1993 <br /> File: 24-220222-A00 <br /> MAR 17 1993 <br /> Mr. Joe Bryson <br /> Joe Bryson Heating and Air Conditioning <br /> 907 South Wilson Way ENVIRONMENTAL HEALTH <br /> Stockton, California 95205 PERMITISERVICES <br /> Subject: Soil Assessment Sampling Results <br /> Joe Bryson Heating and Air Conditioning <br /> 907 South Wilson Way <br /> Stockton, California <br /> Dear Mr. Bryson: <br /> Enclosed are the analytical results for the verification soil samples collected from a <br /> single soil boring at Joe Bryson Heating and Air Conditioning in Stockton, California <br /> (Plate 1). Two soil samples were submitted for chemical analysis to verify soil <br /> conditions at the site. Petroleum hydrocarbons (as gasoline or BTEX) and EDB were <br /> not detected in either of the verification samples. Lead was not detected above <br /> concentrations typical of San Joaquin County. Based on these results, Kleinfelder <br /> recommends no further assessment or remediation of the tank site. Based on this <br /> recommendation, Kleinfelder suggests that Joe Bryson Heating and Air Conditioning <br /> produce a cover letter requesting site closure and attach a copy of this report. <br /> Background <br /> Two underground gasoline storage tanks were removed in 1991 from an excavation at <br /> the site. Due to the allegations regarding the integrity of the tank removal contractor <br /> and the lack of adequate notification to San Joaquin County Environmental Health <br /> Department (SJCEHD) of the removal, the results of the verification samples were not <br /> accepted by SJCEHD. To consider site closure, SJCEHD required additional <br /> verification sampling by advancing a single soil boring through the backfilled <br /> excavation and submitting two soil samples from the boring for quantitative analysis. <br /> The following paragraphs summarize the field activities and analytical results, and <br /> present Kleinfelder's conclusions and recommendations based on those results. <br /> Field Activities <br /> On January 19, 1993, confirmation soil boring B-1 was drilled at the site (Plate 2). <br /> Ms. Linda Turkette of the SJCEHD observed the drilling, soil sampling, and soil <br /> boring abandonment activities on January 19, 1993 (approval letter Attached). A total <br /> of seven soil samples were collected for qualitative organic vapor screening (using a <br /> photoionization detector [PID]), soil classification, and potential analysis. PID <br /> readings were consistently below 2 parts per million by volume (ppmv). Table 1 is a <br /> sample identification and PID measurement log. <br /> FRIG-22(1993) Page I of 3 24-220222-A00 <br /> Copyright 1993 Ceinfelder, Inc. �,1 <br />