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Mr. Douglas M. Ikenberry, P.E.
<br />Page 5
<br />October 27, 2012
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<br />I trust that foregoing is complete enough for your review and approval. Please call if you
<br />have any questions or need additional information. Your prompt attention to this matter
<br />is much appreciated.
<br />cc: Mr. Roger Doak, CDPHE
<br />Mr. Trevor Jiricek, Weld County
<br />Mr. Troy Swain, Weld County
<br />Mr. Brock Bowles, DRMS
<br />Mr. Donald W. MacDonald, Coors Energy Company
<br />REFERENCES
<br />Sincerely,
<br />DOTY & ASSOCIATES, LLC
<br />f �
<br />Doty & Associates, LLC
<br />Benjamin P. Doty, P.E.
<br />Doty, 1998, Ground -Water Monitoring Plan, Keenesburg Ash Disposal Site, Revision 2.0,
<br />prepared for Coors Energy Company, Doty & Associates Project No. 302 -15,
<br />October 1.
<br />Doty, 2001, Alternative Source Demonstration, Statistically Significant Increase Over
<br />Background, Iron in AMW -1 and SMW -2 Samples, Keenesburg Disposal Site,
<br />letter to Mr. Douglas M. Ikenberry, P.E., Colorado Department of Public Health &
<br />Environment, from B.P. Doty, Doty & Associates Project No. 302 -17, June 14.
<br />Doty, 2005, Alternate Source Demonstration, Statistically Significant Increase over
<br />Background, Manganese in SMW -2, Fourth Quarter 2004, Keenesburg Disposal
<br />Facility, Coors Energy Company, letter to Mr. Douglas M. Ikenberry, P.E.,
<br />Colorado Department of Public Health & Environment, from B.P. Doty, Doty &
<br />Associates Project No. 302 -17, April 8.
<br />Doty, 2008, Request for Revised Ground -Water Monitoring Frequency, Keenesburg
<br />Disposal Site, letter to Mr. Douglas M. Ikenberry, P.E., Colorado Department of
<br />Public Health & Environment, from B.P. Doty, Doty & Associates Project No. 302-
<br />17, June 3.
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