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rage t ofL <br /> Mike Infurna [EH] <br /> From: Mike Infurna [EH] <br /> Sent: Tuesday, January 27, 2009 2:47 PM <br /> To: 'Eric Price' <br /> Subject: Woolsey <br /> Eric, <br /> I got a chance to check this site out on Geotracker. I rec'd that submittal (SCM for <br /> Low Risk GW Closure Eval) dated Jan 13 today. <br /> I even got a chance to discuss it with Nuel. <br /> We're going to proceed with evaluating the NFAR as soon as you submit a couple <br /> of things. This is just a heads up to get you moving in the same direction we're <br /> thinking. I'll be generating a comment letter asking for the following. You'll be on <br /> the cc. <br /> first: you're gonna need a Soil Vapor Intrusion evaluation. Every LUST/LOP site <br /> pending NFA has to have the ESI eval for vapor intrusion. Get me a work plan to <br /> do the SVI sample collections. Remember, our concern is the public/working folks <br /> in the buildings surrounding that could potentially be exposed to the residual <br /> contam that may be migrating. Put some probes along/near each building, besides <br /> one near MW-3. Thionk conservative, like we regulators do and imagine your small <br /> children playing in those buildings. let's rule out exposure by migrating vapors by <br /> gathering data that supports no vapors going there. I have my fears about the long <br /> time automotive/diesel shop usage this place has had over the years, but I'm <br /> thinking positive here.. <br /> second: Nuel wants a professional eval/estimate when you, we, can expect the <br /> residual gw contam to meet surrounding/background levels/ that is, NO <br /> concern...gotta put that big PE on the line now. take an educated guess and see if <br /> you can support the fate and transport with valid data/discussion to being gone in <br /> less than 10 years. Discuss stability, leaching, sorbed, you know, give me <br /> confidence this stuff will attenuate nicely and quickly. <br /> so start processing for a work plan. You should get my letter within a week or 10 <br /> days. I'll give you about 30 days from the date of the letter for the WP to be on <br /> GT. <br /> call me if you have any questions. <br /> Michael J. Infurna Jr. <br /> Senior REHS. CA Reg#5649 <br /> LOP/Site Mitigation Unit IV <br /> San Joaquin County Environmental <br /> 1/27/2009 <br />