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• e-"FEB-27-1998 09:04 FROM GE©LOGICOL TECHNICS TO 12094640138 P.82 <br /> Geofogicaf Tec ks Iw. <br /> 2M <br /> UWXWd <br /> .9v$1 <br /> (=)s 539--5M <br /> February 27, 1998 <br /> Project No.: 251.3 <br /> Project Name: McGranaban (Gawne Rd.) <br /> Mr.Ron Rowe <br /> San Joaquin County PHSIEHD <br /> 304 E.Weber Ave.,r.Floor <br /> Stockton, CA 95202 <br /> RE: Remedial Aviion Report and Well Abandonment <br /> Former Moresco Property, 16865 Gawne Road, Stockton,CA <br /> Dear W. Rowe: <br /> On Febniary 6, 1995 Geological Technics lnc.submitted a Remedial Action Report summarizing <br /> the rerne&al activities at the above mentioned site and proposing that the vapm extraction wells <br /> be properly abandoned. This letter is to provide a method for you to approve this work without <br /> extended time commitment on your part. <br /> VETS SuMMM <br /> The VETS consisted of one vapor extraction well and three passive recharge wells serviced by a <br /> Thermal Oxidizer. -fbe VETS operated at the site f vm November 12, 1997 to January 14, 1998 <br /> and removed and treated approximately 85 gallons of gasoline hydrocarbons from the subsurface. <br /> Recommendations <br /> 1. Remove the thermal oxidizer,VETS piping and the propane tank froom the site. <br /> 2. Properly abandon, under county permit, the vapor extraction and air recharge wells. The <br /> metfxodology for this is as follows: <br /> • The work will be performed by Geologics.1 Technics Inc. and V&W Drilling of Rio <br /> Vista C57#720904 (707-374-2815),owner-Robert Vickery. <br /> * The well boring and screen annulus will be closed. via pressure grouting methods <br /> with neat cement slurry and allowed to mushroom over the top of the casing. <br /> • The well boring will be drilled out to four(4)feet. <br /> • The four foot excavation will be backfi„llW with Clean fill material and finished flush <br /> to surface grade. <br /> + The actual grout volumes will be tracked and recorded to insum the well boring is <br /> properly closed. <br />