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Mr. James C. Stevens <br />November 30, 1998 <br />Page 2 <br />was collected. Copies of the field activity forms are attached. Samples were collected with a Teflon <br />disposable bailer and placed on ice until delivery to the laboratory for analyses. The samples analyzed for <br />metals, nitrates+nitrites, fluoride, chloride, total dissolved solids (TDS), and pH were scheduled to be <br />filtered in the laboratory. However, the sample containers were inadvertently preserved with acid. <br />Therefore, the sample could not be filtered in the lab. Monitor well MWS was re-sampled on November <br />12, 1998 for dissolved metals. Chain-of-custody forms accompanied the samples throughout the shipment <br />and are included with the attached analytical report. <br />Laboratory results indicate that samples obtained from well MWS were below the permit limits for all the <br />required parameters. The permit limits were established by using the Human Health Standards and <br />Secondary Drinking Water Standards tables contained in The Basic Standards for Ground Water or are at <br />the method reporting limit of the laboratory. Analytical results, Human Health Standards, Secondary <br />Drinking Water Standards, TDS Standard, and the Groundwater Organic Chemical Standards are <br />summarized in Tables 2, 3, 4, and 5, respectively. <br />reported below the analytical method detection limits <br />form are attached. <br />laboratory results for pesticides and herbicides were <br />. Copies of the laboratory report and chain-of-custody <br />Greystone appreciates the assistance of the Division of Minerals and Geology with this project. If you have <br />any questions, please contact me at (303) 850-0930. <br />Sincerely, <br />i ~- t Z~l U~ <br />Nick Mathis, C.P.G. <br />Geologist <br />Enclosures <br />cc: Ms. Elizabeth Pacheco, Costilla County <br />102698.IIr/November 30, 1998 <br />