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E NV IF '17ALT11 <br /> WALLACE - KUHL GROUND WATER INSTIGATION ADDENDUM WORKPLAN <br /> &ASSOCIATES INC <br /> 95 A -CRjYS-_TAIp.WAMERY - STOCKTON <br /> 404 West Fremont Street <br /> Stockton, California <br /> WKA No 1628 05 <br /> August 2, 1995 <br /> INTRODUCTION <br /> We are submitting this Addendum Workplan for a ground water investigation at the <br /> Crystal Creamery faculty located at 404 West Fremont Street in Stockton, <br /> California (Plate 1) This workplan is an addendum to our March 17, 1994 <br /> Problem Assessment Report Workplan The purpose of our Investigation will be to <br /> evaluate the northeastern extent of petroleum hydrocarbon contamination in ground <br /> water associated with a former 10,000-gallon unleaded gasoline underground <br /> storage tank <br /> Project History <br /> Geotechnical Engineering <br /> Previous investigative work indicates ground water contamination exists beneath <br /> Engineering Geology the site as evidenced by test results of water samples collected from the monitoring <br /> wells shown on Plate 2 Ground water flow direction has been calculated to flow <br /> Environmental Consulting <br /> generally to the north-northeast <br /> Remediation Services <br /> Construction Inspection <br /> Proposed Scope of Work � <br /> i <br /> Materials Testing <br /> To evaluate the extent of petroleum hydrocarbons in ground water north-northeast <br /> of the former underground storage tank, we will drill one soil baring and convert it <br /> - — to a two-inch diameter ground water monitoring well at the location shown on — — <br /> 3050 Industrial Blvd <br /> Plate 2 The boring will be drilled using a truck-mounted drill rig equipped with <br /> West Sacramento <br /> hollow-stem augets Soil samples will be obtained from the boring at five-foot <br /> CA 95691 maximum intervals or changes in llthology until ground water is encountered Soil <br /> t Fax 916 372 2565 <br /> 916 372 1434 <br /> RecvcW N*Lr <br />