Laserfiche WebLink
T Page 2 of 3 <br /> Advanced GeoEnvironmental, Inc. <br /> Stockton • Santa Rosa • Monterey • Brea • S • <br /> 1-800-511-9300 Spokane ne <br /> tcuellar@adv_�_ Reno Dallas <br /> eoenv_.com <br /> v dvgt oQ nv —. <br /> This email/fax message is for the sole use of the intended recipient(s)and May <br /> unauthorized review, use,disclosure or distribution of this email/fax is prohibited. If you are not th <br /> the sender by email/fax and destroy all pa p g Y contain confidential and privileged information.qny <br /> per and electronic copies of the Original message. <br /> e intended recipient,please contact <br /> From: Tim Cuellar[mailto:tcuellar@advgeoenv.com] <br /> Sent: Tuesday, August 28, 2012 11:47 AM <br /> To: 'Vicki McCartney [EH]' <br /> CC: 'Nuel Henderson [EH]'; Bill Little (wlittle@advgeoenv.com) <br /> Subject: California Stop, 2224 Manthey Road, Stockton CA <br /> Vicki, <br /> We have had a chance to further review the EHD <br /> letter <br /> for the California Stop site. The letter summarizesthe <br /> conclusions/recommendations reportedted (dated 07/16/2012) <br /> M ). The EH <br /> March 2012 (dated 04/19/12 by AGE in SVE Pi/ot Test Report - <br /> D letter further states that based on <br /> historical data collected from borings B1 and B <br /> 25', that one additional SVE well is warranted s <br /> 2 at depths between 15' and <br /> current UST area without any further assessment i.e <br /> south (dboring dient) of the <br /> like to bring to your attention that boring B-3 located( borings),I would also <br /> the UST area, was the most impacted boring the <br /> However <br /> incorporating USTa , g of the three borings. west of <br /> well MW-1 (screened 10 to 30') into the SVE well network <br /> the area west of the USTs could be effective) <br /> agreement with the EHD that one additional S Wmitigated. Therefore, AGE is in <br /> warranted and would be sufficient to mitigate SVE impact south of the UST area is <br /> However, AGE would like the EHD to reconsiderpact at the site. <br /> the ozone pilot test which was previously the recommendation to dela <br /> has generally fluctuated at depths between 16' <br /> by the EHD. Y <br /> last reported a l depths of a Ground water <br /> approximately 1�, nd 20e ground water was <br /> the 07/16/2012 letter, si y bsg• As the EHD <br /> gnificant soil impact has been encountered ed at the ointed Out n <br /> site at depths between 15' and 25', and SVE remediation <br /> hydrocarbon impact at depths generally between ad will not address the <br /> the greatest soil impact was encountered at a de 20 and 25 . <br /> be addressed through SVE remediation if in theAdditionally, <br /> depth a 20', which would not <br /> saturated zone. <br /> SVE would not address dissolved impact at the site. <br /> MTBE concentrations at some u Although it would a <br /> TBA concentrations at the site generally have sky r appear <br /> pgradient/cross gradient wells have declined, <br /> 100,000 ug/I. Additional) Y ocketed in excess of <br /> have increasing MTBE and TBA concentratiodient nlss MW-2 <br /> and MW-6 continue to <br /> , and continue to be unstable. <br /> Based on the above factor's, AGE is of the opinion <br /> that proceeding with the <br /> 9/5/20 1 <br />