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• • III IIIIIIIIIIIII III <br />STATE OF COLUI~UU <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resourres <br />1313 Sherman 51., Room ' 15 <br />Denver, Colorado 80203 <br />Phone: 1303) 866-3567 <br />FAX: (303) 832 8106 <br />INTEROFFICE MEMORANDUM <br />DNISION OF MINERALS AND GEOLOGY <br />TO: Joe Dudash <br />FROM: Mike Boulay M ~f <br />DATE: November 27, 2000 <br />SUBJECT: Bowie No. 2 Mine, Permit No. C-96-083, Permit Revision No. 4 <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />RECLAMATION <br />MINING•SAFETY <br />Bll Owens <br />Govc~noi <br />Greg E. lValcher <br />EaecuLVC Duccloi <br />Michael B Long <br />Dwision Dneclo~ <br />I have completed my review of the ground water aspects of Permit Revision No. 4 for the Bowie <br />No. 2 Mine. I have the following comments regarding [his permit revision application. <br />1. Wells DH-13 and DH-34B have been removed from the approved monitoring plan as <br />indicated on revised page 2.05-76. The 1999 Annual Hydrology Report (AHR) indicates that these <br />wells were destroyed by the mining operation. li` these wells are no longer needed, then they should <br />be properly sealed in accordance with Rule 4.07 and an abandonment report should be submitted to <br />the Division for each of these wells. <br />2. It appeazs that the nomenclature for wells DH-57a, DH-57b, and DH-S8a, DH-58b has been <br />changed to DH-57, DH-57a, and DH-58, DH-S8a, respectively. Please clarify this and ensure that <br />all maps, permit text, and AHR information reflect the correct nomenclature for these wells. <br />3. For the new wells added to the monitoring program (DH-65, DH-66, DH-67-Abv, DH- <br />67D, DH-67-D-Blw, DH-67-B) please update Volume III of the permit document with the <br />appropriate well completion diagrams for each of the new wells. <br />4. The Division is in the process of adopting changes to our surface and ground water <br />monitoring rules. The tole changes will incorporate compliance with applicable ground water <br />standards at established points of compliance. Additional information regardin downgradient <br />ground water quality may be requested at the time the new rules are promulgated~Mrdirtg~e-Ehe <br />h. ~ddi[ional groundwater monitoring wells may <br />be required to establish appropriate point(s) of compliance. <br />Please let me know if you require additional information. <br />M:coaUmpb/bowplO4 <br />