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4Q1<raZan & ASSOCIATES , INC <br /> GEOTECHNICAL ENGINEERING • ENVIRONMENTAL ENGINEERING <br /> CONSTRUCTION TESTING & INSPECTION <br /> August 28, 1998 Project No 034-98081 <br /> i <br /> ADDITIONAL SUBSURFACE SOIL AND GROUNDWATER ASSESSMENT <br /> PHASE I- AUGUST 1998 <br /> H&H ENGINEERING PROPERTY <br /> 212 1NDUSTRI4,L DRIVE <br /> STOCKTON, CALIFORNIA <br /> 1.0 INTRODUCTION <br />' This report presents the results of our Phase I of additional subsurface soil and groundwater assessment <br /> of the H&H Engineering property located at 212 Industrial Dr,ve in Stockton, California Krazan & <br /> Associates, Inc , (Krazan) prepared this report for the Wilbur-Ellis Company, the former owner of the <br /> subject site Ms Jan Thompson of Wilbur-Ellis provided approval of Krazan's Proposal No P119-98 <br /> dated May 12, 1998 to proceed with the additional soil and groundwater sampling <br /> 20 BACKGROUND INFORMATION/PREVIOUS INVESTIGATIONS <br /> S <br /> A Phase I Preliminary Hazardous Materials Site Assessment conducted by Telic Engineering <br /> g <br /> Corporation in October 1993 indicated that 1,000-gallon underground storage tank (UST) and related <br /> piping were removed from the subject site in 1987, and that minor concentrations (7 2 parts per million <br /> total petroleum hydrocarbons) of petroleum hydrocarbon constituents (PHCs) were present in soils <br /> beneath the UST <br /> On January 14, 1998, a Limited Subsurface Investigation was performed by Krazan to comply with due <br /> diligence requirements presented by Union Bank of California (UBOC, lender for the property) The <br /> Limited Subsurface Investigation consisted of two exploratory borings in the vicinity of the former UST <br /> excavation The first boring (B-la) was discontinued because it was not located within the former tank <br />' 215 West Dakota Avenue• Clovis California 93612 • (209)348-2200• FAX (209)348-2201 <br /> Offices Serving the Western United States <br /> 3498081 SOS <br />