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2 <br /><RMcClellon@sjcehd.com>; Linda Turkatte (lturkatte@sjcehd.com) <lturkatte@sjcehd.com> <br />Subject: RE: EMI Survey - San Joaquin COGEN <br /> <br />Hi Brian, <br /> <br />I met with Ann yesterday and discussed the proposed boring locations, she has some comments for you and will contact <br />you this afternoon. <br /> <br />I reviewed the two maps of the EMI survey, and find it interesting that although you have low confidence in the 2015 <br />survey, it seems to show response near the two excavated waste cells but the current survey does not pick them up. I <br />agree It will be interesting to see what the borings find. <br /> <br />Just to give you a heads up, one of my concerns is that all the proposed monitoring wells are clustered south of the <br />Cogen plant, and there is no monitoring well planned for the north part of the site. I believe that most of the data from <br />the Pilkington site showed gradient was basically to the south. It will be important to get an upgradient well in <br />(assumed to be the north area of site) to document upgradient water quality and to give best coverage for <br />determining gradient. <br /> <br />Ann can discuss with you in more detail. <br /> <br />Thanks for sending over the EMI survey results. Very interesting. I look forward to seeing what is confirmed in the <br />borings. <br /> <br /> <br />Gerald Djuth, PE, CEG <br />Chief, Federal and Private Site Cleanup Unit <br />Central Valley Regional Water Quality Control Board <br />11020 Sun Center Dr., #200 <br />Rancho Cordova, CA 95670 <br />916-464-4677 <br /> <br /> <br /> <br /> <br /> <br />From: Brian W. Millman <bmillman@advgeoenv.com> <br />Sent: Thursday, February 28, 2019 9:14 AM <br />To: Palmer, Ann@Waterboards <Ann.Palmer@waterboards.ca.gov> <br />Cc: Djuth, Gerald@Waterboards <Gerald.Djuth@waterboards.ca.gov>; Martin Wenzel <wenzel@beowulfenergy.com>; <br />Robert Marty <rmarty@advgeoenv.com>; Robert McClellon [EH] <RMcClellon@sjcehd.com>; Linda Turkatte <br />(lturkatte@sjcehd.com) <lturkatte@sjcehd.com> <br />Subject: RE: EMI Survey - San Joaquin COGEN