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• III IIIIIIIIIIIII III <br />999 <br />Decemb <br />RECEIVED <br />DEC 21 2000 <br />Division of Minerals & Geology <br />Western Fuels{alarado <br />P.o. Box 628 <br />Nucla, Colorado BI424 <br />Telephone 9701864~21fi <br />Fax 97018642168 <br />Mr. Harry Ranney <br />Reclamation Specialist <br />Division of Minerals 8 Geology <br />1313 Sherman St., Room 215 <br />s Denver, CO. 80202 <br />RE: TECHNICAL REVISION No. 43, REVISED POND 008 FINAL DESIGN, ,HORIZON <br />MINE, PERMIT C-81-008 <br />Dear Mr. Ranney: <br />Enclose are two complete copies of Attachment 2.05.3(3)-10 plus Exhibit 2.05.3-16. I have <br />modified Pond 008 design to reflect a more realistic surface water drainage area plus I have <br />included emergency and primary spillway structure designs. I used the SURVCADD computer <br />program to model the watershed size and characteristics. I used SEDCAD4 to model and <br />design the emergency and primary spillways plus examine the water quality of the effluent <br />water. Because of our WORDPERFECT/HPprinter formatting conflict, I had to reprint the <br />entire document to have a consistent document with proper page numbering and table of <br />contents. You can start your review of Pond 008 on page "Attachment 2.05.3(3)-10-8" and <br />finish on page "Attachment 2.05.3(3)-10-33". <br />This project was rather involved and if you need further clarification on this material, please call. <br />Sin <br />Ross L. Gu .E. <br />Chief En er <br />c:\data \~+pdata\reaisions \tra]. doc <br />