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rCLS-cr-177Cy iTJ-U4 tYUM UtULUU1GHL 1U_HN1U TV .12e94640138 P.02 <br /> Geologica(TechnWSIM. 1 <br /> V41 XVW*a <br /> C�&firrrLQ 95351 ' <br /> February 27, I998 , <br /> Project No.: 2513 <br /> Project Name: McGranalm (Cawne Rd-) <br /> Mn Ron Rowe <br /> San Joaquin County PBS/EHU <br /> 304 E. Weber Ave,r Floor <br /> Stockton,CA 95202 <br /> RE: Remedial Action Report and Well Abandonment <br /> Former Moresco Property, 16865 Gawne Road, Stockton CA <br /> Dear Mr. Rowe: <br /> On February 6, 1995 Geological Technics Inc,-submitted a Rernedial Action Report summarizing <br /> the remedial activities at the above mentioned site and proposing that the vapor =Irwtion 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 Sumrnery <br /> The VETS eoasisted of one vapor exwaction well and three passive recharge wells serviced by a <br /> Thermal Oxidizer. The VETS operated at the site frann November 12, 1997 to January 14, 1998 <br /> and removed and heated approximately 85 gallons of gasoline hydrocarbons from the Subsurface. <br /> Recommendations <br /> 1. Remove the thermal oxidhwx,VETS piping and the pwpane tank from the site. <br /> 2. Properly abandon, under county Permit, the vapor extraction and air recharge wells., The <br /> methodology for this is as follows. <br /> e The work will be performed by Geologwd Technics Inc. and V&W EWling of Rio <br /> Vista C57#720904 (707-3742815),owner-Robert Vickery. <br /> * The well boring and seen annulus will be closed,'via pressure grouting methods <br /> with neat cement slurry and allowed to mushroom over the top of the casing. <br /> • 17he well boring will W drilled out to four(4)feet. <br /> + The four foot excavation will be backfilled with cleats fill material and finished flush <br /> to wrfa3ce gale. <br /> + The actual grout volumes will be tracked and recorded to insure the well boring is <br /> properly closed. <br /> i <br /> k <br /> i, <br />