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t; FINAL REMEDIATION PLAN <br /> Shell Oil Compauy <br /> 620 West Charter W-y,Stockton,California <br /> t.� Delta Project No.4088.5$6 <br /> Page 18 <br /> l 4.1 In-Slfu Remediation cf Soil rind Ground "'rater <br /> In-situ remediation will be accomplished with minimal disruption to the existing site and operations. <br /> l� <br /> 4.1.1 Soil Vent€ns <br /> Soil venting is the process by which petroleum hydrocarbons within the soil matrix of the vadose zone a:c <br /> I volatilized,thereby decreasing hydrocarbon concentrations in the soil. Published laboratory studies(Johnson, <br /> 1987;Krishnayya,1988;Rainwater,1988)and field studies(Anastos,1988;Regalbuto,1988;P-G Johnson, <br /> i et. al),as well as Delta%soil vapor ex.u-a;.tion first performed at.the lite,hdkate that$oli ventiq Is an, <br /> . . . ....... . . <br /> r ressure h tocarbo: tL fY01�11y fmdd Ii; 61(60 f'ratrtt 5dllA r <br /> e1Tcictisrta t:;itl to[ dova�highvapo p yd ( ) <br /> Wthe 61te €,oil ve <br /> 1ttoti�'1g.�tiog prtiduct layea�fitoot gr6urtd aster: > � <br /> I� �tltij#his also proved effectiven dct,. <br /> In.aNti6ni loll v'edti6g will enhatice in'situ biadegradalfort cf Petroleum hydrocRi bWtt5 g <br /> t�ti doryn taus In for natural bacterial activity and growth. T�[idid m1te�riot ilea are tad iia i(ar#ttttt, ,t <br /> f axil vehiitlg fs es.frwa.id to tit:felattt+ely chart;T✓ypfcrt q:ltss lilacs 1. gr ']xvr the retssi a of t1�:6 aefi vti or <br /> extraction test performed at this site,refer to Section 3.5 of this report <br /> 4.1.2 Ground Winter Recovery <br /> I di6iii ax:6dpswill be used at:thie site to develop gradient rdatrot of the ground water ti,oflim,ire.. <br /> I , <br /> al�lwftaiaigtialt tt,ti;.d'" lv hydtoearb%�ae tv.expI salla at the urate!( <br /> Abl <br /> e to soflvi ntlrs attd to rcrttivef; <br /> cvaf f 0o:,tttlnitig rlitsaiv lrycfroc rbesas.`Due to the lour specific yield p f the we11s,ground <br /> water volumes will be minimized.:; f veee t :t*30e:AA' W�"W- mW.- W.,-M"!* <br /> f ,t�,i�.ur system ett't�r ty�ssi�gt�ieti�y�t��ctuta(�ter,fcrtttiaeat�ste�n. � . <br /> to _. <br /> 4.2 Ground Water Treatment and Permits <br /> . _ d(sch <br /> -ter, ..., .,,.... .. •_. ... ...,... <br /> As previously mentioned,sib iM+etetf'gr6u8st Water tibetsrg�d to the sani <br /> I btitry server s'jstemr`f he <br /> discharge must meet the criteria of the City's Ordinance Number 009-8GS, Chapter 7 of.the Stockton <br /> t, Municipal Code,Section 7,089.20. In general,ilta'bidiadI requird the follmdr `( <br /> ::e,"I3litcharge 1'PfY acarenttatiotts.c100.ppm� <br /> i. a TTo for volatiles tested by U.S.,114vironMenisl Pf0tecti0b f gency(EI'A)60116{)Z>i�Ittlysfs risttsS fs, J <br /> y K • iil'ai have ooiitiirtiaue 16w2r'�;plGo limit(LFL)monitoring that will shut the system.down'if air'''r <br /> conrrntratiocla.in the dist harge location e;rcerd 1(7 percent 6f the LEL 6f gxsol'fle' ;.f <br /> dls . <br />