Laserfiche WebLink
A <br />cotter <br />VIA EMAL AND U.S. MAIL <br />March 8, 2012 <br />Colorado Department of Public Health and Environment <br />X/ Water Quality Control Division / WQCD -B2 -CAS <br />Compliance Assurance Section <br />Attention: Michael Harris <br />4300 Cherry Creek Drive South <br />Denver, CO 80246 -1530 <br />Dear Mr. Harris: <br />f /Y1 -- i 9 7 7- 3 00 <br />RECEIVED <br />(AR 1 2 2012 <br />Division of Reclamation, <br />Mining & Safety <br />Re: Notice of Violation/Cease and Desist Order Number I0- 100601 -1, Amendment 3, <br />V Paragraph 30: Additional Extension Request <br />On January 31, 2012, the Water Quality Control Division granted an extension until March 23, <br />2012 for Cotter Corporation (N.S.L.) ( "Cotter ") to be diverting up to 8 cfs of flow from Ralston <br />Creek past the Schwartzwalder Mine site as specified in Amendment 3, Paragraph 30 of the <br />above referenced Order. There have been several unexpected delays in construction of the upper <br />cutoff wall due to a greater than expected depth of excavation required to reach suitably <br />competent bedrock and the subsequent design changes to accommodate a heavier and taller wall. <br />Specifics of these construction/design delays are as follows: <br />• Excavate an additional 4 -6 feet to attain suitably competent bedrock surfaces (5 days). <br />• Engineering design changes associated with foundation and footer (5 days) <br />• Upgradient bentonite fill layer design change: lead -time for materials procurement and <br />installation (5 days) <br />The construction project engineer projects that the 8 -cfs creek diversion milestone can be <br />achieved by April 12, 2012. Cotter respectfully requests that the 8 -cfs creek diversion deadline <br />as specified in Amendment 3, Paragraph 30 of the above referenced Order, be extended until <br />April 12, 2012. <br />If you have any questions, please contact me at 719 - 275 -7413 (ext. 202). <br />Sincerely, <br />John S. Hamrick <br />Vice President, Mill Operations <br />cc: Tony Waldron, DRMS <br />.1.1f, 7 ;' <br />Cotter Corporation Telephone (719) 275 -7413 <br />Canon City Mill, P.O. Box 1750, Canon City, CO 81215 -1750 USA Fax (719) 275 -1669 <br />