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Page 1 of 3 <br /> "no v <br /> Harlin Knoll [EH] <br /> From: Sarah Salcedo [ssalcedo@stratusinc.net] <br /> Sent: Sunday, July 15, 2012 11:44 AM <br /> To: Harlin Knoll [EH] <br /> Cc: 'Gowri' <br /> Subject: RE: 2057 S. EI Dorado, 2012-2013 FUND Budget <br /> Hi Harlan- <br /> Yes, I believe the groundwater EWs (4" dia,50ft deep)could possibly be converted to AS wells within <br /> Fund budget extra,although repurposing larger diameter wells with drop tubes/packers has it's <br /> inherent flow loss issues,etc,but could be done. Also the VE wells are partially screened into water <br /> (though shallower) so those are a possibility for sparging as well. AS in general is definitely something <br /> we will consider and propose,if more feasible and economically appropriate over physical water <br /> removal. <br /> As far as I know, the RP is solely dependant upon the Fund for financing of the cleanup work. I cannot <br /> even attempt a change order to get additional funds allocated without a directive to perform additional <br /> remediation and/or assessment work though(since we can technically run the SVE and do all the <br /> groundwater monitoring/sampling/reporting that is currently required by SJC,with the funds already <br /> allotted). <br /> As for mass extraction rates of SVE system,when it started in May 2011,it was at about 5.5 lbs/day, <br /> which dropped next month to 2lbs/day,then hovered around 0.5 lb/day for all the rest of the <br /> operation(July 2011 thru Jan 2012). When we restarted it a few weeks ago,the influent was basically <br /> on the same order of magnitude as when we shut it off(-100 to 200 mg/m3) so mass extraction is still <br /> in that 1/21b/day range. I would suggest we run it for only another quarter (thru end of Sept?) and if <br /> we continue to stay in that same low range with no rebound,shut it off and save the money until we <br /> can make some AS or GW enhancements to bring that influent concentration up. <br /> Sarah O.Salcedo,P.G. <br /> Project Manager/Senior Geologist <br /> Stratus Environmental,Inc. <br /> 3330 Cameron Park Drive,Suite 550 <br /> Cameron Park,California 95682 <br /> (530)313-9966--office <br /> (530)676-6005--fax <br /> (775)343-2295--mobile <br /> From: Harlin Knoll [EH] [mailto:HKnoll@sjcehd.com] <br /> Sent: Friday, July 13, 2012 8:28 AM <br /> To: Sarah Salcedo <br /> Subject: 2057 S. EI Dorado <br /> Sarah, <br /> Again, can the EWs be converted to air sparge wells considering the limited budget from the FUND? Is the RP <br /> willing to use private resources beyond FUND money to move the project along? <br /> What is the current extraction rate/mass being removed, in pounds per day, with the system running 24 hrs per <br /> 7/16/2012 <br />