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HORIZ N ENVIRONMEN AL INC:- <br /> - . <br /> - <br /> Specldllsfs Ste Assessment;Remedial Test ng Design and Operation = - <br /> July 30, _1998 _ <br /> - _ <br /> - :Mr. Jeffrey Wong _ <br /> --' PA1(fVIENT <br /> SanJoaquin Countiy Public=Health Services=_ - PEED <br /> C9ilE _. I <br /> Environmental Health Division - 1 <br /> 304 East Weber Avenue,-Third Floor. AUG Q a-1998 <br /> Stockton, California 95202 _ SAN'JOAQUINCOUNiY::- - <br /> - - <br /> = PUBLIC HEALTH SERVICES <br /> ENVIRONMENTAL-HEALTH DIVISION .�. <br /> Subject: _ t4pp1►�atfon`forWeii=Desiructu`u��`#:� <br /> _Former Discovery Chevrolet _ -- � - - � <br /> 161`5 11th Street, Tracy, California <br /> C <br /> Mr. Wong : eJ �,,��2 <br /> �-M 1, <br /> _ - At the request of.our client,..Horizon Environniental Inc:-(Horizon) has prepazedjhe enclosed_ <br /> Application for.Well Destruction for the former water=well recently=discovered-at--the-above-- <br /> referenced site As previously discussed and:as proposed on page...-I$�o£the Corrective Action <br /> P1an (Hl6rizon, June_,'5,-_4998). for_the:site, the�appazent.water well discovered outside of the-- <br /> l.uuJ <br /> northwest-comer Ofthe service bay.area at the-site will-,be destroyed Is a part of the corrective <br /> f.� action work proposed for the:site_In'additron, momtonng well MW 1 will be destroyed during <br /> G the excavation 'operations by excavation -- the soil rnaterials-around the=well casing, then <br /> I removal of the well cg by the backhoe or excavator <br /> asm _ <br /> a - The 8-inch well casing_forapparent water well was previously measured to a.depth of <br /> �L approximately 145 feet The steel discharge pipe and pump will be removed from the 8-inch <br /> Steel casing,then-a-2-inch`PVC_easing will be_lowered_fo the bottom of the well casing and.the _T <br /> well will be destroyed by pressure grouting Cement grout will be placed inside the well casing <br /> -_ _- <br /> �_ - � <br /> and the well casing will be pressunzed to approximately 30 pounds per square mch (p'si) 11us= <br /> process will be repeated until the grout 1 el stabilizes rn the well at or_neaz to the.top of theaEll1 <br /> casing._Overdril_ling of the well casing is not possible because the well easing iSlocated within <br /> two"feet of the north bearing wall of the service_bay building: <br /> �- The pressure grouting of the apparent-water=well is scheduled for Thursday, August'i3, 1998. - <br /> a <br /> Destruction tof rnonitoring well' MW-1 will occur during the excavation-operatlons-whrch:are _ <br /> tentatively scheduled to begin the weeki of ,1;998 <br /> As per our telephone conversation;also enclosed wrth'the:Applrcation for W__ell Destruction is a <br /> check-for$60.00=for the,iequrred fees_;::and ante plamindicatmg,tlie-wells to-begdestroyed_ -; <br /> 5011 Golden Foothill Parkway,Suite 7 • El Dorado HillsCA 95762,:. (916)939-2170 • FA_X(976)9344172 <br /> F P.O Boz 5283 • Bakersfield,CA 93388 • (805)589=8389 • FAX(805)589-1456 <br /> _ <br />