Laserfiche WebLink
I <br /> of air to each sparging well An air flow beth%een 10 and 20 standard cubic feet per minute <br /> (scfm) should be maintained <br /> ' 5.2.1 Sparging System Location <br /> ' The blob-,er unit %kill be located with the VES and %kill operate on electricity I10%%LNer the <br /> blower can be assimilated .%jt)i the SVE unit and therefore, din%% poxier from the opeiating <br /> unit. <br /> A one-Inch diameter PVC pipe %N ill cai iy the air from the blo%�ei to the spaiging v ells The <br /> piping will be installed beneath the olound surface <br /> ' <br /> 5.22 is <br /> S ar ing Wells <br /> p <br /> ' Only one of the piesent %%ells at the site is suitable for air spaiging Therefole one <br /> additional sparaina «ell x�ill be installed at the site the adclitional spa]g]ng %yell should be <br /> installed noith of MW-1 Based upon data from the IAS test «e cstimatc that these %\ells <br /> ' could ciente a come of influence 40 to 60 feet in diameter at the aii-%�atei intelf,ue (depth <br /> of 20 feet) <br /> A x%oik plan foi the installation of the additional spaigir]a Nell 1s included in Appench\ J <br /> The \ell design is included «]tli the NNo]}, flan <br /> 7 3 Monitor 1110 <br /> ' A iegulai quaiteik, monitoring program %\ill be C01111rtuecl 1111011 hoist the ]enledi 11011 <br /> period rrlclucling sampling of all nlolritolina \\Cris 1-10\NeNel foi the first qualter aftel <br /> initiation of ]enlechatioil �%e recommend monthly nloilitomig of the \Neils foi 2ioiind%\,ite] <br /> depth and organic Napois to determine if ground%\ater mounding of lateral spread of <br /> ' hydiocaibons is occurring Additionally, any flee pioduct encounteled \g ill be 1emo�ed by <br /> hand-bailing <br /> tSince monitonng \%ells MW-2 and 111\V-3 aie towards the edge of completely outside the <br /> impacted ai ea, NN e do not believe it «ill be necessary to collect \N eekly or monthly <br /> gioundwatei samples for laboratory analysis, quaff telly samples of these«ells should piovlde <br /> sufficient infoiniation on any possible migiation of the h}diocaibon plume However if <br /> niouridirrg or riligration of the plinile is detected, monthly of «eekly sampling of i11NV-21 and <br /> ' MW-3 may have to be initiated <br /> 53 Estimated Clean-up Time ' <br /> ' Air spaiging in highly permeable aquifers genes ally results in i aped reduction of hydr ocai bon <br /> concentrations iii the saturated zone The length of time for groundwater clean-up if difficult <br /> to estimate Howetier, based on data fiom the pilot test, we estimate that gioundwater <br /> CI LipIN 1'R1',1 53,'sC 44 1'tu56 u 14 <br /> I <br />