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Ad�Ohcie <br /> + ebron, m. ent n - <br /> E , <br /> t l December 2001 <br /> AGE NC Project No-'97-0369 <br /> Mr.;Dennis.Sonnenberg <br /> Stockton_rJolf` Ci}untry Club - <br /> 3800 West Country Club Boulevard <br /> Stockton, Califarni 95204 <br /> Subject: 'Monitog�VeR indonent Report <br /> Stockton,OoW&Country.Mb <br /> - 3806 west Country Club Bouleirird,StovlcWna CaWormb <br /> mar,Mr:Samtenburg: <br /> At.your request, tlrlvanced GeoEnvironrnerital, Inc. (ACE) has"prepared this monitoring well <br /> abandonment report for the abandoimi=t of four,single-co ngleted rx�nitoring wells at 3800.West <br /> Country Club: Bcntlevard; ,Stockton,..Califomi (the:,site): Site structures and rr nitoring well <br /> abandonment locations are depicted on`Figure.l. <br /> 'YRS F OUN1): <br /> Four single-cornplefed-two-int li diatneter C ground`water,.monitoring-wells (MWJ, MW-2, <br /> W-3,=4 IVf -4 were,installed:as part of a subsurface investigation of the farmer underground <br /> storage ;tailic (UST) and dis4xnset areas at the site; <br /> The nitoring wells had been installed to <br /> midmum depths of 25 fed,below surface grade(bsg).. <br /> PROCEDURES <br /> The,wells were abandoned on 23`"October_2001 b Mitchell Drilling En�nonmerital of Rancho <br /> Cordova;by pressure grouting.with a portlard cemerlt grout.mixtiiie.A ratio of six gallons water for <br /> every 94-pound sack of portland ecrrient was.utilized in preparation of the grout mixture-MW-1, <br /> MW 2, Mw-3 and w' esu nple ely lacked with the grout mixture-under pressure(201o.. <br /> 30 psi) for,approxirriattly three minutes to ensure grout penetration into the filter pack. Following <br /> .pressure grouting,the r�nitoring wells were:over-drilled.utilizing an.eight-inch hollow stem auger <br /> to approximately three feet bsg,and the',,uppennmt two feet of well easing was-removed;the over- <br /> drilled intervals were backfilled to'surfacegrade with-.neat cement. <br /> 837 Shaw Road,Stockton,California 95215 <br /> Telephone(209)4.67-1006 FAX(209)467-111$ <br />