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MOM <br /> e <br /> The lop otcach well Will be iccEsrcd to prcvcnt unaudioritcd cntry arxl inc.oraion liy aurf irs <br /> water's, `n is tw-0 onsite%ells wit[be ctunp lctcd with 6-inch diansetcr locMng stat ca%irg <br /> that cxtcnd%approximately 2,5 fctt atxavc the grourxl sur(ace. "lire wills in tx)th Fl 6ntadu <br /> Str"t and liard�ng Way will be complrtcd.pith watct•tig?A,threaded tralfis boxes that can <br /> only be opened with a special urcr.rh. <br /> A tag indicating the%cil numtxr,w-01 type,dcpth,p-!orated Interval and the diameters of <br /> the boring and casing will tx placed in cath well. The elevations of the gmund surfrcc and <br /> the top of casing will be surf-eyed for vertical location and tial to the prcvitusly installed <br /> well$. The dtpth3 to Bund waicr will he gAuScd and lire clevalion of be top of VMnd <br /> water will lac calculated in or&r is drtcrn lrsc the direction of flow and establish a h7dnUlic <br /> R gradient. <br /> 4.2 INSTAU-A'nO.'40F 'AMR E-X-MACnON WI-LLS <br /> FiYc vapor cxti,an csells tYlY t,VW?,YW3,VW4»ars!YWS,Figure 31 will be <br /> insmIltd around and within the fomxr tank field at forrrncr Cn:vron S5 9.1918. IV vapor <br /> cxWJcd0P We%will be inst;ndlod for future hook-up to a vacuum and trcatrilent system for <br /> inplatca itirtxdiation of 93MAine contaminated soil. "I'ttc sal boring will be drilled in a <br /> =nncr similar to clot for the nxxnitoring%-till excepu that the borings will be 6-inch in <br /> di,•Ermia. The Dings will be terminated just above the wgtcr table.appmimxtciy 33 to 40 <br /> feet below VvxW surface. 71V wells will be catmpkiod a.s vapor exttartion wells by <br /> installing 2•Irich diartxw,flush-duc4dcd.sch..eciuk 40 PVC cuing. Scrtttn wit/t a slot size <br /> of 0.010 inch will be iA%ulkd from a depth of spproxittutcly 15 feet below Smund surface <br /> aplsraxi=tcly 35 below growW surf. The annulzu sp=Around tl:e casing will be <br /> Pod with Lott Star number 3 sand. <br /> 11u Irse ti-spor cxtr ctkM w lls will be co nVictod above Vouix!in itmporary.sircl <br /> Mier casing t nil]bring,conf raed for t=k.up tothe VCt"5 system„ <br /> 4.3 SA;4SPLIIr'G ANC?ANALYSIS OF SOILS AND GROUND WATER <br /> UrEdi.fttidW Wil earn,les will t1c ce4cmd at Cads Rvt fcct of drilling depth%kith a nwdiritd <br /> California Ali[ <br /> SPOM UsTVICr H"d*Aith brus lir_. 'Me=Mlcr atnd brus lincts%il3 be <br /> t ebbed with dctcrS'cttt and lulled u°[th tap w3trr aM then%ith dc�.ixed water before use <br /> at each=mutts WCrtil. Tate sprit spoor 11"Vier is fitted with three tatass IIAC s. One <br /> soil tilled bnw Knee wail be Irttrrtedktt3y 1bWd with alutrtdmtrNtt foil AM cappcd with ptastiC <br /> 9 <br />