ARCHIVED REPORTS_XR0003680 - Laserfiche WebLink

Home Browse Search

1-1 ]Ilhs I \\olr 2072 N1 Yo cilli(( P 1*bT C 2 DISCretL sot] SanlnlcS COIILcted from each slL1n:fi antsy different Oeolot;lc ulllt shall be an-11)7ed by a ci tmllfled laboraioi% for peinleabrhty (K) porosity bull, dLnsity, nlolstule, and om]Tile carbon eonlent We also lcauest that %OLI e%aluate local ground%%a,er flo\% conditions and establish a site spLclfic locali7ed flm%nct that Is dependent on hydrology and 211.0102-lic conditions and is reflc,eted on h%rdro,,eolo,ie cross sections and fLnce dla rznls Additionally, you are required to prepare a rose diagram for !groun&%ater -ladlenr at this site plolttd on the �1round%%aZer con[out maps All future plot end cross sLctlort drawlrltrs sh ill shcm thL location of fornlel t3n}, S}Stenls RI-port your IeSlllls sal She S\\ 1 Rcpolt requested belo%\ V P1; I I,!) -L .l ii i 41a Co,111'1L'011" COIL lO r :lh` ill ' I c,I ILSa ,11 Ii '00 \ 100 101 LaCh boiC.hole 11"IM- I trlMLe[ -Ippioich Transects silo]] bL plopnsed for the plume lone a\',) end perpenoreular to estim^ted �rounci«aie- float directions detennlned b� e\lstrn, and future monitor N%cll nely orks F-oi each c.ontuluuuslt lo«geo horehole ;',round%%atcr samples shall bL collected from each plefLrenull (lot% pa[Il encot'ly�led (polLnti'l high lz%dlauilL conduC11%11%) using -i disclLte saml}ltrl tool G1otlld%%<ter nityses hV CP \ Ml-1hod S260B flall SC Ill is required rhes gild system stl,ll bL employed to doctirllcru ba,h SEI'1(ILr3phIC sLquencLs znd contanllnlnt dlstributron Complete a I�larr`aclial %te%t, lon11-a\1s tiew, and 11"li]SeLt %le%% geOlO`�IC Ill d coillamm int dlStrlbLil1011 CrobS-SeCtloll u[]ll7_Ing A] dat I 1roII1 the sliC 1 Tie c01111nu0lis co,L'ail'11%,je-1 cl a a sh-ill be Used to SIL, -end eonstrtic,t n,onitot %%ells and to e%aluat plume I,lr-rz,lo,l recep(o, rlslvltulnci lblht\ future; %%ate¢ StYl)'% and t nled]o[ron alternati%Ls \\e request that you el1100% ppro-icheh to estimating contailvn-l.lt mass flu\ across plunge transects or fencea located p�1PCT1 ticular io the plumc.(s) WC request thL List of L\]]edited site assLssrllent tools ancUor appropria[ely scleellLd 1110111(Orin, %%ells to p,o\tde dat<l- fo [hese estimates 1n dccidln, tllc location of transects ar,d dt%cloptn, mass nu\ estlm`ltes please coilsidel the %arrlblc dissoltltion of contaminants from the source PL',m-m,Tit rlonitorlr; %\ells and/or moniu 11112 %%ell CILIStL1s (screened a[ r1,1p1ol}[rate discrete depths %kilts appropn-ItL length of sctecn) must b,- lnstallcd to monitor the plume Include }our proposal for the Installation of these wells in t11e %%ors. phn addLndum requested Please report your results in the S\\'1 Report IequestLd belo%\ Giouiid%%-ItCr Lontanurlant plumes must be nlonitored on -I quzrtetl) basis Additional %%ells %%ill be required to deflt e the do\+n gradiult e\[int of the pltullc If the plunge continues to migrate or the ne\t set of%%ells fall to define the plunle(s) Ill the e%ell[ continued plunge 1111olation 1s Identified or impact to ,%ater supply\yells is prcdictcd please Include recommendations for the installation of additional %vclls or remediation alternaII%CS 11, thL QuartelIN Reports regLlested bLlo%% The around%%ater plume at the site referenced above Is undetmed and concentrations in each affected %%ell may change mer time in some cases e\ceedm- California PI lnlaty 1,%Ia\Inluttt Contanunant Le%els (MCL s) Only upon colllpletloll of SL1bSllrf'1Ce cliarac[ei ization ill the area can the fcasibifit) of di dling ne%% private municipzl \%ells or other water supplies be c%aluatcd PHS/1~RD non dttects you as responsible part% to complete -1 comprehenst,6e site assessment as listed aboNe b) December 18, 2000 Please submit a %%orkplan considcr Ina the aboNe listed components to PHS/IjHD no later than October 1 2000 5 00pni A Soil and Watet I iNestigation Report is due December 18,2000 5 00pm