Laserfiche WebLink
W iUH1 LNVIRONMIENTAL PAGE 93 <br /> 12: aGPM FROM PPLMER CEr, TO 12096325152 F.03 <br /> previously. This data should address the bowie regolatmy regniirt wants, and help to <br /> ` hcgin a li mhed vadose some diallovP cleanup given. the entail Scltonl budget. However. <br /> Please note that limited site assesment = affect the effcie�y and duration of site <br /> j cleanup and future alt evuld be tleccssaq depending etpnn ultimate site <br /> cleanup <br /> standarrda. <br /> Proposed Modifiicatious of the l lrigi val Stepre or Work <br /> rk � <br /> I ; <br />+ WES prWvsm to modify the exiati April 5, 1995 workplace n follows. <br /> I <br /> v Drill ant dt~t p naplorattxy bo&g to gro=dwater in a location near the <br /> former tank pit. The drilliW umpling and chemical an&1yslg progtim w¢ald <br /> be the same as in the original VAwkplan- <br /> o Advance the Loring into groundwater and collect a reconaaissitace <br /> groundwater sample. A grvandwater rrell will V"be inUallcd. <br /> V Backfill the: deep boring to a deptm of about 3D feel with -_Mnent gr't)ut by <br /> filling from bottoslr to top, whwo very big cvaccattrations of contaminguls � <br /> were observed by the previous consaltiint. Oac vadose xunc <br /> �ac►aittrrittglcatraatlatt wall he ingtalled in the horde. The completion will <br />! UK the WES S pn Xoceb a mcbed to the cmigtrlal workplan (gee attached dee ail). <br /> o The existing vadmic well is, in onr apitxion poorly designed and possibly a <br /> CODUMIUM conduit, WES will backfin the lvs= 53 feet of ibis well with a <br /> Chert cement groui slurry pluctd ,in Fhc well by trtmic line filling #ha well <br /> frrrex► the bottom to top. In lhie way the 0xi3dug WO-11 screen and sand pack <br /> will he plagged to viedify the wall an that mme vada" extraction can he made <br /> in the interval from 10 flat tv 30 fast where the ejevated contImibaul <br /> concesntrations have been previously identified during tank removal and later i <br /> ilt illing tend sampling. <br /> V Scb0Ql paraunnel will select in cona<eltatkm with WES the must 4wst effective <br /> IA :oil vapor stream west at ageripme-ni for use with this two wall$. The <br /> f ultimate cot and ius#allatiou will km provided by WES once the equipment is <br /> 'selectad, and cast materia and budget$ arc wmplettd. <br /> E e The syMna will be started and aparated tender approved air and PHDEIfD ` <br /> permits. A syatM evaluation will be done after two utontbs of operation. <br /> Purthar work by the School would be done as their fujum fmdjtlg allowp,. ! <br /> Mr, Lzsitr Messina of wigs 1 ►ill coorcilute the field oporationa. wbich are still <br /> scheduled io begin on April 17, 1993_ If you have say gvzgivitr, please call Mr. <br /> 1t'l[C9"�in8. : <br /> Sincerely. '� (� <br /> W fight Environmental 'Services, 1040. <br /> N-01262 ' <br /> A\ <br /> I.esrer Messina Chrlstopber M. PalmerEFi4�l; �F1� <br /> p <br /> n <br /> Pr t <br /> lac Mena er g C 9. 4 1362AV <br /> ti <br /> Attsclteneut; Va w - <br /> doge all Jt�otaxl v f <br /> � tati� <br /> Reference: Wright Environmental Services, luc. Workplan entitled, "Waterloo <br /> School, 1007 Af_ Paxxi Rd., Sfuclttvn, CA Grautidwattr Invest pdoll." rated April 5. 1993. <br /> Waterloo Addendum Pegg 2 <br /> r <br /> I <br />