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1 � <br /> Kennedy/Jenks/Chilton <br /> Consulting Engineers <br /> 33M Braddww Road,Suite 320 <br /> n CaWwnia§5W <br /> 26 January 1987 V 916.362.3251 <br /> FEB 5 1987 <br /> Mr. Tom Terrill <br /> Reynolds and Brown ENWOMENTAL HEALTH <br /> L1200 Concord Avenue, Suite 200 FERMIT/SERVICES <br /> Concord, CA 94520 <br /> Subject: Handyman Warehouse Underground Storage Tank Assessment <br /> Report <br /> Tracy, California <br /> LK/J/C 866156 <br /> "Dear Mr. Terrill: <br /> In accordance with our Agreement, dated 15 December 1986, we <br /> have completed an assessment of the two underground fuel storage <br /> tanks at the Handyman Warehouse, 724 East Grantline Road, <br /> Tracy, California. The results of this assessment are presented <br /> in this report. <br /> The tanks are not presently in use. It is our understanding <br /> that Reynolds and Brown is considering removing the tanks and <br /> associated piping and fuel pumps. The objective of this assess- <br /> ment was to determine whether significant quantities of product <br /> Lstored in the underground tanks have leaked and are present in <br /> soil and groundwater at the site in concentrations that warrant <br /> remediation during tank removal. To perform the assessment, a <br /> L ground penetrating radar survey was conducted to locate the <br /> tank , four boreholes were drilled to collect soil samples, and <br /> one borehole was completed as a monitoring well to collect <br /> groundwater samples. Soil and groundwater samples collected <br /> during field activities were analyzed on a priority basis. The <br /> procedures followed during our assessment are described in <br /> detail, in the remainder of this report. <br /> Conclusions are presented in the final section of this report. <br /> Based on the information obtained, it is our opinion that no <br /> [ significant remediation activities are warranted. <br /> L GROUND PENETRATING RADAR SURVEY <br /> A ground penetrating radar survey of the site was conducted to <br /> attempt to confirm the approximate location of the two under- <br /> ground storage tanks. Ground penetrating radar surveying uses <br /> the reflection of high-frequency radio waves to. located inter- <br /> faces that represent changes in electrical conductivity {such as <br /> L . <br />