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Page 1 of 5 <br /> i <br /> Mike Infurna [EH] <br /> From: Mike Infurna [EH] <br /> Sent: Monday, May 12, 2008 9.52 AM <br /> To: 'Scott Ranalli' <br /> Subject: RE: former Canteen site <br /> I'm getting back up to speed on this site. <br /> I've read the four pages of ernails from April 7. i <br /> I <br /> I've also checked Geotracker for the 'work plan'. NOT.there. <br /> So to answer your question Scott concerning a PDF submittal, NO...not acceptable. It MUST be on Geotracker. I'll <br /> open it and review it and "receive" it if all looks fine. <br /> I'll generate a comment (H&S Code req) and then you may proceed" <br /> ball,in your court. get me a Geotracker plan to install the borings and I'll approve it. <br /> From: Scott Ranalli [mai Ito:SRana,lli@deltaenv.com] <br /> Sent: Thursday, May.08, 2008 9:10 AM <br /> To:.Mike Infurna [EH] <br /> Cc: Eric Muehlberger <br /> Subject: FW: Former Canteen site <br /> Importance: High <br /> Hello Mike, <br /> 1 am forwarding a recent.e-mail exchange between you and Eric (see below). No doubt <br /> that we have "old man memory" x 3 at work here, so it's good that we have these <br /> written copies of what we say to help refresh... <br /> The impression I get.from your responses below is that -you wanted a discussion of <br /> where-we were at and where we need to go. I believe we covered that very well in our <br /> Workplan. At this`Juncture; our plan is to delineate in a few areas, especially at deeper <br /> (to 85.feet bgs) intervals,'to help decide our next step. <br /> Soil Borings: . Our. SVE concentrations continue to get lower and are currently at less <br /> than 2 ppmv. To confirm.that soil is "clean" and/or to find any depths where residual <br /> sorbed-phase HCs are present, we have proposed two soil borings. One is near the MW- <br /> 3 wells (south end of site) and one is near the. MVV-1.3 wells (former tank field). <br /> Monitor Wells: As is stands, the deeper completion wells seem to have the highest, <br /> remaining HC concentrations. We are currently leaning towards augmenting the existing <br /> AS-SVE System with deeper AS wells tb 85 feet. Based upon the CAF and pilot testing, <br /> the current AS wells were only installed to 60-ft bgs. There may be two factors at play <br /> here: <br /> 1. `The 60-ft AS wells may have pushed HC,concentrations deeper. <br /> 2. The preferential. reduction of toluene and xylenes.concentrations (as opposed to <br /> 5/12/2008 <br />