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ConhrArpS ocoP <br /> Tosco Service Station #4409 l <br /> August 26 <br /> 2003 <br /> Page 2 ' <br /> Encroachment p <br /> Stockton has Permit # 66349 for the <br /> granted an extension to the installation of <br /> Of September 22, err the well <br /> encroachment Permit a0 toencroachment <br /> in Aft complete necessary permit thio The City of <br /> achrnent B extension e_ art' work ugh the date <br /> marl from Glty of Skockt COPY of the <br /> ' Groundwater <br /> GroUndw Mot►!#orrr>!g �,, ) are included <br /> well ater Mo elf <br /> Was installed to g well Abandonment and <br /> MW-72 <br /> Inch diameter h a total depth of 83 s e and Rernstalla#Fen. <br /> allow-stem feet below y installed on July g, <br /> PVC casing and is augers Thew ground 2003 The <br /> development of the screened from 78 toll rg constructed with 2 fbgs) using 8_ <br /> melted and tyre Well, it was note �� fear bgs with 2-Inch diameter <br /> the welt Well was not accessible <br /> the upper burin <br /> fatal depth not successful Portion Of the g subsequent <br /> over pth of 83 Suet b SECpa prop attempt by Cascade Well casing had <br /> drilling of the well gs using 8-in A ses tO averdnll the Dnll+ng to repair <br /> Constructedanew ch diameter hollow Ste ex+stin <br /> with 2-inch well will be Installed rn th m augers F: to a <br /> 83 feet bgs with p C'ri f diameter schQaule 4� p e borehole T allo�r„in� <br /> MonitoringrY slotted screen Vr✓ Casing and scr he Weft will be <br /> installation, Well Develop... caned from 7g_ <br /> newly InStalle , M " Sa <br /> surging the d monrtorrnmPl+n9' and <br /> approximate! well over the g wells AnalY$is <br /> y 10 over ►Iiril, be developed b Followingrigorously be sam g vola length pled following mus of water he screen Intervalan Y rrgrously <br /> events Groundwater <br /> development rhe 9roun d by purging <br /> benzene, toluene,Water salnpJes fro <br /> and to subsequent and <br /> well"m <br /> DCA by EPA ethylbenzene, total h quarterly Method 82506 new well will mphrig <br /> and soluble cad b #collectivel analyzed for TPl-t9, <br /> ' Soil Selection and Y EPA Y BTEXy, Mt> E <br /> overdrllling and reinstAnalYsis` No soil 6070 7,2. <br /> and Will be re dilation Of MW Samples <br /> Samples will <br /> ported on In the Site Sol, sam be collected d ° <br /> ' Soil and Water Urs Conceptual Model for es were Previouslyurrng the <br /> be Water <br /> poSal Sol,cuttln the srte cof,ected <br /> characteriz Y stored onsite and gs generated dun <br /> atron and disposal covered ng drillingp <br /> Water <br /> el contractor and Soil cuttin With plastic o erat'On$ will <br /> Tater gener trans gs will be removed b sheeting Pending <br /> aPProved 66ated during ported to a Caldor Y a Conocop <br /> contractor to ago!►on dru Stearn Cleanin nra-licensed hiltips <br /> Cahfornia-f ce Pending g Will be ternpOrarrf disposal facility <br /> Purge water dr nsed di transport by a Y stored in <br /> Aur 007-_ <br /> disposalms will be tempord SPOsal or treat -onocoPhrllrps disposal <br /> ' Wel!SurveyingY stored Onsite Pending Y SOrI cuttings and <br /> U g transportation and <br /> by a California-lice Pon eompfetron of <br /> Groundwater -licensed surve well construction, the <br /> elevations gradient data Yor to a local benchmark ref well will be surveyed <br /> ations and de th_ Will be <br /> A to-water Interpreted ut+f+zin ative to mean v I <br /> • Repay measurements g the to sea level <br /> recent A Slte Conceptual p of well casing <br /> assessment actrvitre Model will be sub <br /> s and the overdrrJlrnmrhed by October g and relnstallation of 003 which docu <br /> rn <br /> Well MW_12 ents <br />