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Page 1 of 1 <br /> 1 <br /> Mike Infurna [EH] <br /> From: Harlin Knoll [EH] <br />. Sent: Tuesday, August 31, 2010 11:01 AM <br /> To: 'Chris Strong' <br /> Cc: Adrienne Ellsaesser[EH]; Nuel Henderson [EH]; Mike Infurna [EH] <br /> Subject: RE:LOP Site#1282124 -WGR modification request= <br /> Chris: <br /> The additional sampling of MW3-6 and MW3-9 is approved. Nuel Henderson recommended immediate <br /> resampling of these MWs to confirm the ground water results for the'lastest round and then go to quarterly <br /> sampling, if appropriate. <br /> Postponement of injection in this area seems warranted, until more data is.available and reevaluated_ <br /> HARLIN KNOLL <br /> SAN JOAQUIN COUNTY/EHD. <br /> 600E MAIN STREET <br /> STOCKTON, CA 95202 <br /> (209)468-3442 <br /> FAX: 468-3433 <br /> From: Chris Strong [mailto:cstrong@wgr-sw.com] <br /> Sent: Tuesday, August 31, 2010 10:08 AM <br /> To: Harlin Knoll [EH] <br /> Cc: 'Tim Neal WGR' <br /> Subject: Third Quarter UST#3 Sampling and Remediation Activities <br /> Hi Harlin, in follow-up to our phone conversation this morning, I just wanted to confirm county approval for <br /> the details we discussed regarding the UST#3 site at the Port of Stockton (T0607711817). In response to <br /> our 8120110 letter to the county, you said.you were OK with the sampling of the two extra wells, MW3-6 and <br /> MW3-9, this quarter in addition to the MW3-8 well, which we have already been sampling on a quarterly <br /> basis. This is in order to better assess downgradient natural attenuation trends and temporarily hold back <br /> on installing the downgradient dissolved oxygen injection system unless natural attenuation proves t. <br /> insufficient. We will plan to go ahead and sample wells MW3-6,.MW3-8 and MW3-9 this quarter and will <br /> still be installing the Ozone-Peroxide Pilot system at the core of the plume, as approved in the 7130110 <br /> SJCDEH comment letter. <br /> Regards, <br /> Chris Strong, PG <br /> Senior Geologist <br /> WGR Southwest, Inc. <br /> 315 W. Pine Street, Suite 8 <br /> Lodi, CA 95240 <br /> cstrong.@wgr-sw.com <br /> off: (209) 334-5363 ext. 206 <br /> cell: (209)487-4802 <br /> fax: (209) 334-5374 <br /> .9/28/2010 <br />