Laserfiche WebLink
1 rv,,,.i yw A-u,br xa,r,w�m exv.,y <br /> S9n xlglxy seas <br /> ..aa,vo,rosa.roc <br /> Paye 1 <br /> 4Tembd Rakaw a -- wlke <br /> Ground water.amplee collected an April <br /> 1 <br /> gg <br /> 6TBX rConatlto.nte and TPH by d C I{porn lalcertifl8d alaboY tCCyt <br /> The laboratory result. (attached7 indicate that NT8%conatltuent. <br /> end TPR <br /> Were <br /> not detected at monitoring Wella NN-lob <br /> a. Benzene and xylenes ere defeated at MiP- hw , and NW- <br /> 1.3 and 1.4 Poeta per billion (ppbj rot ctivalyc c ntrati.na f <br /> Results man ietoricnl ground-water sampling at the site indicate <br /> that TPH d ,TEx cane—tratimno have been declining Inc.ethe <br /> initial aampl ing event in June, 1987. Benaene has htatorieally <br /> on the petroleum e.nstituenta detected at the hig}yeot <br /> concentration. ......et the alta. P3 gore ; i tta.h tl <br /> bansenettations t Bite mwnitorin a shows hisagainst <br /> sampling dates. This figure 9 we12s Plotted gainer <br /> banaene can.entrat E1 illustrates a dramatic aemline fn <br /> constituents have nota e.monttoringawe lie t the site.- Patin <br /> 3, and MVe-4 E.r a be.e detcctetl t monitoring wells MW-1, Mw- <br /> period —ding 19 months. <br /> During the past t <br /> well wo sampling a nts benzene has been detected at <br /> atlon <br /> \�� conitoring MW-2 at a maximum concentration or <br /> 1.7 <br /> level <br /> ofably marglnelly higher than the califmrnla Zt'lan <br /> level 1,G ppb Por this constituent. Examlhatlan of Figura ; <br /> drdmat lcallyhesince n the enaconcentnitial ations at NW-2 have deelle 3 <br /> Heoult. of the past two sampling pl event, <br /> event in Jv_, 19A7. <br /> concerytratlo., at trble Nell will likely remain at very 1 w or�Ug­ that nhon- <br /> detectible eancenttetions nt this well. <br /> L o A CO N m <br /> rn prafesbional mpinlan, the raaulte r seven ground-water <br /> .amp11Rg eV.nte (o Ver a p.rl cd .f 4e month e( indicates that <br /> site <br /> aetivitlee neva s sed a meaningful threat to ground-water <br /> reaouraea beneath the ite. Petroleum constituents are not present <br /> I ground water beneath the Bite at concentrations that would <br /> normally require CallEorA,a'e egianal water qua3lty control boards <br /> to Cell for remediatipn activities, <br /> Ba..dtorinn rheas .heiusions recommend <br /> —On <br /> activiti a et the it. cease that grcuntl-water - <br /> Courity Public Health sezvices close the site That bhe an Jsaquln <br /> ground-water monftoring activities„ n regard to further <br /> ml�®IYY/�io�m� <br />