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Sof <br /> Advanced <br /> X GeoEnvironmental Inc. .. . <br /> I it <br /> ILII <br /> 30 August 1999 ; <br /> a <br /> i AGE-NC Project No.95-0104 <br /> !' <br /> $ Ms.Lori Duncan <br /> San Joaquin County Public Health Services-Environmental Health Division <br /> 304 East Weber Avenue, 'Third_ FIoor !,! AUG 311999 <br /> Stockton,CA 95202 <br /> ENVPOS !F—KAL HMLI*H <br /> ! ��fCl"vii A wL,;C v il.:i_S <br /> Subject: Sail Vapor Extra ction Results mud Modifications �# <br /> Marlowe Property <br /> 4648 East Waterloo Road, Stockton,California <br /> Dear Ms.Duncan: <br /> As part of the progression of the soil vapor extraction and air-sparging program at 4648 East Waterloo Road <br /> (the site) lower concentrations of volatile hydrocarbons have been extracted (see attached) and fuel <br /> consurnption has increase significantly,currently beyond the cost effective remediation goals for the site. <br /> Advmiced GeoEnvironmental,Inc, (AGE)proposes to continue to extract hydrocarbons utilizine an active <br /> vacuum blower and two carbon canisters (55-gallons each). Monitoring and sampling will continue as <br /> currently underway.This modification of the remediation system will continue to allow for the recoveryand <br /> destruction of hydrocarbon vapors,yet at a lower energy cost. The total duratijon of the remediation at the <br /> site will likely remain at approximately six months to allow for removal of the dissolved hydrocarbon <br /> 4 removal from the ground water at the site. <br /> If you have any questions or comments,please contact our office at(209)467-1006. <br /> !i <br /> Sincerely, <br /> .I <br /> Advanced GeoEnvironmental,Inc, <br /> 3# <br /> William Little w <br /> Staff Geologist <br /> E <br /> jo <br /> :E <br /> f cc: Mr. Jonathan Marlowe <br /> 3315 F.Miraloma Avenue,Suite 117,Anaheim,California 92806 <br /> Telephone-(714)996-5151 FAX(7j4)9915--51N2 <br /> 91 <br /> y <br /> �h <br />