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J • <br /> Chevron -2 - 1 November 2005 <br /> M. Scott Mansholt <br /> Alden Park,2nd Semi-Annual/Annual <br /> occasions; this well and three others are cross/up-gradient, and one(MW-1 is 500 feet northwest of <br /> MW-10, which is 400-feet northwest of the project area) is cross/down-gradient of the site. <br /> We believe that MW-14, which is up/cross-gradient, should not be destroyed. This well and other <br /> nearby existing wells should remain for monitoring groundwater conditions upgradient of the area <br /> containing free phase floating product. <br /> If the wells are destroyed as proposed, this would leave three upgradient wells, and five cross/down- <br /> gradient wells near the eight wells containing free phase floating product. At this time, the locations and <br /> number of wells remaining, appears to be adequate for monitoring. <br /> We concur with the plan to destroy the wells MW-1, 2, 13, and 17 that are either dry, up/cross-gradient <br /> or several hundred feet downgradient beyond existing monitoring wells. <br /> By 15 December 2005, please submit your plan, procedures, and schedule for destroying the Alden Park <br /> monitoring wells. <br /> If you have any questions or comments please call Dean Hubbard at(559) 445-5179. <br /> a 4�L ld&ffs <br /> SHELTON R. GRAY C. DEAN HUBBARD. <br /> Senior Engineering Geologist Engineering Geologist <br /> PG 6357 <br /> cc: Michael Infurna, Jr., San Joaquin County EHD, Stockton <br /> Luis Mercado, SAIC, Sacramento <br />