Laserfiche WebLink
<br />• <br />r ;; <br />September 20, 1978 <br />III IIIIIIIIIIIII III <br />-_ .-__ _a., M <br />r.~ _ _... _ .. __ .J <br />~~ <br />State of Colorado <br />Mined Land Reclamation <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Re: Portland Limestone Quarry File 77-344 <br />Attn.: Mr. Roger Funston <br />Dear Mr. Funston: <br />• Ideal Basiclndustries <br />Cement Division <br />Exploration Department <br />P.O. Box 1949 <br />Fort Collins, Colorado 60521 <br />303 462 5600 <br />'~~ <br />We appreciate your letter of September 18, 1978 giving bond <br />determinations and stating the subject application is considered <br />complete except for three minor clarifications. The balance of <br />this letter will list the clarification questions followed by <br />Ideal's comments. <br />(1) "How does the quarrying of the Old Concrete Quarry <br />Area fit into the overall mining timetable? About <br />when will Ideal commence quarrying in this area? <br />Will cuts be ready for final grading at 30 month <br />intervals once the sequence is established as in the <br />rest of the quarry operations?" <br />As explained in the application Exhibit D(e), the many <br />contingency factors such as cement plant production rates <br />and expected future changes in quarry techniques, does not <br />contribute to good timetable accuracy for this unique, long- <br />time operation. It is expected Ideal will reopen the Old <br />Concrete Quarry sometime between the years 2035 and 2050. <br />The quarry cuts do vary in size, but an estimate of the <br />time interval from the start to remove limestone from a <br />new cut to final reclamation grading of that cut is about <br />30 months. <br />(2) "The staff is concerned <br />in the Old Concrete Qua <br />titularly the nort~e~si <br />will be taken to asei4e <br />Creek? Can you give us <br />the creek? <br />with the closeness of cut #2 <br />^ry Area to Beaver Creek par- <br />~ner of Cut N2. What measures <br />minimum disturbance to Beaver <br />a cross-section from the cut to <br />