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1396 EAST SEAMIER STREET <br /> t�j WOODLAND, CA 95659-9603 <br /> 47EEC.,E ESTF_RN FAX(916)662-0723 <br /> GE®-.ENGINEER,S (916) 668-5300 <br /> CALIF_CO 513857 A <br /> �ORATION <br /> RE1EDGEOLOGIST <br /> March 11, 1991 <br /> 1gr. John Margowski <br /> Environmental Director <br /> Wickland Properties <br /> 1765 Challenge 5815 <br /> ay <br /> Sacrament°, <br /> (916) 921-1100 <br /> recovery work plan for soil remedi5tacktont <br /> RE: in-Situ Vapor 1448 N. E1 Dorado Street, <br /> Former Regal Station 6041 <br /> California- <br /> Dear Mr. Margowski: <br /> requested work plan for the "Authority st m <br /> The following is the requ " <br /> Construct and Permit to Operate an in-situ vapor recovery sF <br /> n soil contaminated with <br /> gasoline <br /> using activated charcoal to absorb and control the emissions from <br /> the remediation of the remaini g <br /> f ; range hydrocarbons. must be <br /> Due to the time frame <br /> esttforla"Variance"ch the soil (tadimmediateose ly proceed <br /> remediated, the request eration of the vacuum extraction <br /> with the construction and op for a variance <br /> system is necessary. The next scheduled meeting for <br /> fees, etc. <br /> request is April 1.1, 1991. All work plans, permits, <br /> to April <br /> must be submitted to San Joaquin County Air Quality p <br /> 1, 1991. <br /> INTRODUCTION <br /> Gasoline range hydroce pump <br /> arbons were known to exist beneath The tank <br /> island dispensors and'undergound storage tank <br /> the <br /> :as removed, aerated, and then used <br /> excavation and product dlspenswr areas were overexcavated and was <br /> majority of contaminated soil <br /> as compacted, engineered fill for the excavations. Pea grave <br /> see Figure <br /> first used to backactedtnativeasoil oto the surface, foot depth <br /> followed by the -omP On October S and 9, 1990 three <br /> as <br /> pea gravel and wells. <br /> vag°r extrasing <br /> into these excavated are <br /> sing 2 inch SCH 40 pVC--wjth-0-,m <br /> to the 40 foot depth uD2 inch---slot -- —..-------- <br /> casing for the :yells. - <br /> activated charcoal in 85 gallon tub scrubs <br /> on December 5, 1990,. ; and on December 6. 1990 the wells were <br /> were delivered to the s_te, <br /> page 1 <br />