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• Page 1 of 2 <br /> Gaarder, Jeff <br /> From: Brian Taylor[betaylor@waterboards.ca.gov] <br /> Sent: Thursday,April 21, 2011 11:07 AM <br /> To: Gaarder,Jeff <br /> Subject: Former Shell Pipeline Sites <br /> /7_20n <br /> Hi Jeff; �P <br /> i <br /> I've reviewed your 5 April response to comments regarding the Site Assessment Work Plan for this Site. <br /> I concur with Shell's proposal to install the wells in lieu of the depth discrete hydropunch samples we <br /> requested. <br /> I think that the lower concentrations observed in monitoring wells (compared to hydropunch samples) <br /> may be attributable to borehole dilution and oxygenation. However, Shell's point that site conditions will <br /> ultimately be evaluated by the well data warrants consideration. <br /> Also it appears that our Comment No. 2 has only been partially reproduced on Page 4 of Shell's <br /> comment letter. Because of this, I have not yet accepted the document in Geotracker. However, I think <br /> it's not a major error. If Shell wants to correct it on Geotracker and replace the hard copy before we <br /> accept it they can do that. Otherwise I'll accept it as is. <br /> Brian Taylor P.G <br /> AGT Program <br /> Central Valley Regional Water Quality Control Board <br /> 11020 Sun Center Drive <br /> Rancho Cordova, Ca. 95670 <br /> (916) 464-4811 <br /> >>> "Gaarder,Jeff' <jgaarder@craworld.com> 3/28/2011 11:59 AM >>> <br /> Wendy: <br /> Per our discussion,this email provides information regarding the 1 0111 sampling events for the former <br /> Shell Pipeline sites located in Mountain House and Tracy. <br /> Today, CRA's sampling contractor, Blaine Tech, reported that due to recent rains, it is not possible to <br /> safely sample either site. The wells at both sites are located in fields which have been flooded or <br /> ground conditions are too wet to allow sampling vehicles safe access to the wells. Additionally, because <br /> there is a barley crop growing at the Tracy site, sampling vehicles can not access the wells without <br /> damaging the crop. Also as discussed, there are no orders for either site requiring sampling. Therefore, <br /> the sampling events will not be performed until safe vehicle access is permitted and standard sampling <br /> protocol can be performed. CRA will notify you of the new sampling dates once they are scheduled. <br /> Thank you for your consideration of this matter. <br /> Regards, <br /> Jeff Gaarder, MS <br /> Conestoga-Rovers &Associates (CRA) <br /> 19449 Riverside Drive, Suite 230 <br /> Sonoma, CA 95476 <br /> Phone: 707.933.2362 <br /> Fax: 707.935.6649 <br /> 5/16/2011 <br />