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s <br /> kfr. Ted Knowles <br /> February 6, 1989 <br />` 202/799-5027.04 <br /> ! Cnduct a full-scale test of the SVS to determine zone <br /> of influence (affected by the extraction points) and <br /> hydrocarbon concentrations of the system influent. This <br /> test will provide data essential for developing an <br /> a 1 <br /> ongoing air discharge permit from the SJAPCD. <br /> I PROPOSED WORK STEPS ' <br /> is <br /> �� <br /> The SJLFTL will be working in conjunction with the CRWQCS-CVR <br /> to oversee the remediation efforts at the site. Prior to the <br /> drillingand installation of the vapor extraction wells, GTI will <br /> obt',Zin the appropriate permits. . In addition,' the SJAPCD will be <br /> t contacted to obtain a construction/discharge permit ("Application <br /> for Authozlty to Construct and Permit to Operate") . This permit <br /> will allow, for the construction, of a pi� .)t (soil-vapor extraction) <br /> system and include permiesioh for temporary discharge into the <br /> h atmosphere during the subsequent feasibility studs . The Cit of <br /> Stockton may, ire addition, require a building permit for they � <br /> s ri <br /> system or related treatment" compound. All local and regulatory <br /> agencies will be contactedrior to <br /> p proceedinglib work .at the <br /> site. <br /> Four' soil borings will be drilled with a truck-mounted drill i <br /> T rig, using a 10 1/2-inch outside diameter (O.D.) hollovr-stem <br /> augers. The.borings will be completed to a depth of approximately <br /> rsaf W +45 feet below grade and logged by a GTI geologist using the <br /> F=4 <br /> Unified So ` ` Classification SystemA t <br /> { ppendix ITT) The borings <br /> P will :be 7acated on surrounding the former underground - <br /> a,t i <br /> r4r `` gasoline storage tank 'locations -(Figure 9) . , <br /> x�h re So'1 .samples .From the borings will be collected during <br /> drillll,ig at4pproximately. 5-foot intervals, beginning at 5 feet <br /> 136F <br />