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III tllill1111lII III ~ r~fe ~'~ <br />999 STA~~ROF~~~~~RADO <br />DIVISION OF h11NERAlS AND GEOLOGY ` <br />Deportment of Natural Resources <br />1313 Sherman 51.. Room 215 <br />D I V I S I O N O f <br />Denver, ColoraAo 8D?D3 <br />Phnneai0!) a66-1567 MINERAL 5 <br />rAx: c3ot) e.u-arnb -& <br />GEOLOGY <br />' RECLAMATION <br />MINING•SAFE TT <br />i gJl psvens <br />Govema. <br />December 17, 1999 <br />~ Mr. John Lohr <br />Southdown Co., loc. <br />P.O. Box 529 <br />Lyons, CO 80 540 <br />~ RE: Technical Adequacy Review of Technical Revision 001, Lyons Quarry, <br />Pemtit No. #M-77-208 <br />Dear Mr. Lohr, <br />This letter is being written to address issues which need clarification in the technical revision <br />submitted by your company to the Division of Minerals and Geology (DMG) on December 1 <br />(Lyons Quarry, Permit No. #M-77-208). Please address the following concerns prior to the <br />decision due date of December 31, 1999. <br />Greg E. watcher <br />Evecwrve Ovtttar <br />M¢hael g Long <br />Dnfpon Oveaor <br />1) The previous submittals from Southdown Lyons, addressing CKD disposal on the site, aze <br />assumed to be included in this technical revision. This includes the June 2l, 1999 submittal and <br />the information submitted on September 29, 1999. Please confirm that the information contained <br />in these submittals is to be included in this technical revision. <br />2) Monitoring Program: The monitoring points for sampling for Pond A, as well as [he <br />monitoring compliance point for the site (as discussed during our November 24 meeting) must be <br />shown on a map including any necessary well information (depth, method of sampling), should <br />I the chosen compliance point be a well. The water quality analysis methods and quality control <br />and quality assurance methods must also be described. Also, please comply with the extra <br />measures suggested by Harry Posey in his review (Attachment I). This is in accordance with <br />Rule 3.1.7(6) and (7) of the Construction Materials Rules and Regulations. <br />3) No descriptions of the exact installation procedures for the compacted clay/shale layer have <br />been included in the submissions to DMG. Please describe the equipment used, the depth of the <br />soil layers applied, and a general discussion of the methods of reclamation as relates to the <br />mechanics of earthmoving. This is in accordance with Rule b.4.5(2)(a) of the Construction <br />Materials Rules and Regulations. <br />