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Mr. Anthony J. Waldron <br />July 28, 2003 <br />Page 2 <br />There are two anomalies to note: <br />• Samples were received within the method hold times; however, <br />analysis for dissolved Nitrate/Nitrite as N and Nitrite as N in samples <br />MW-006 and DW-1 was conducted after the hold time had expired. <br />• We did not collect an equipment blank sample fox dissolved mercury <br />analysis. <br />If you have any questions, please feel free to call Mx. Bruce Douglas ox me at <br />(303) 239-5400. <br />Sincerely, <br />BROWN AND CALDWELL <br />/~~l~'D~ <br />rr <br />Bruce Douglas, P.E. <br />Project Manager <br />cc: Brian D. McGill, Rio Grande Portland Cement Cotpoxation <br />P~.\Data\GEN\F-S-P-7~22421\Permitting\Stipulation Response\Groundwater Sampling Plan\DMG TransmitalsWpril <br />2001 revised 7.l L03.doc <br />