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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />COLORADO <br />D 1 V 1 5 ION OF <br />RECLAMATION <br />MINING <br />- rSa;- <br />SAFETY <br /> Sill Ritter, Jr. <br /> Governor <br /> Harris D. Sherman <br /> Executive Director <br />March 4 <br />2009 <br />, Ronald W. Cartany <br /> Division Director <br />Mr. Roy Karo Natural Resource Trustee <br />Reclamation Manager <br />Seneca Coal Company <br />P.O. Box 670 <br />Hayden, CO 81639 <br />Re: Seneca II-W Mine (Permit No. C-82-057) <br />Technical Revision No. 63 - Adequacy Review <br />Dear Mr. Karo: <br />The Division of Reclamation Mining, and Safety (Division) has reviewed the above referenced <br />technical revision application submitted by Seneca Coal Company (SCC) for establishing ground water <br />points of compliance at the Seneca H-W Mine. The Division has worked closely with SCC on <br />developing a plan for specific points of compliance in accordance with applicable Rule 4.05.13(l). <br />The Division concurs with SCC's overall plan for point(s) of compliance at Seneca II-W and has only <br />a few comments regarding the revision application. <br />I. The last two paragraphs on page 7-3b-2 are somewhat confusing regarding the ambient <br />conditions in Hubberson and Watering Trough Gulches. In the second to last paragraph it is <br />unclear if both Hubberson and Watering Trough Gulches have or have not been affected by <br />mining. Please revise to clearly state that Hubberson Gulch has been affected by mining prior <br />to 1/31/94 and that Watering Trough Gulch has not been affected by mining throughout the <br />sampling record. <br />2. Please revise the last paragraph of page 7-3b-2 as follows. The first sentence should read <br />"These Hubberson and Watering Trough Gulch wells show ambient concentrations higher than <br />the Regulation 41 Domestic Use and Agricultural Use Standards for certain constituents as <br />described below". In the second to last sentence, silver and zinc should be removed from the <br />list of constituents that exceed Reg. 41 standards. If you concur please make these changes <br />accordingly. <br />3. Figure 1 is not very legible and the point of compliance well DCAL-02 is not readable. SCC <br />had originally submitted a color copy of this figure in a draft revision during the planning <br />Office of Office of <br />Mined Land Reclamation Denver - Grand Junction • Durango Active and Inactive Mines