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CHIMNEY ROCK COAL III IIIii~~Illill III <br />105 Cast Kiowa, Su'rte 200 • Colorado Springs, Colorado • 80903 • (303) 475-7005 <br />Rl;CEIVED <br />July 6, 1981 ~~~~~ 7 .egg) <br />MINED LAND RECLI,MATIORNE9000. S <br />COLA. DEPT. OF L'u± U_RAL <br />Mr. David Craig <br />Reclamation Specialist <br />Mined Land Reclamation Division <br />1313 Sherman Street <br />Denver, CO 80203 <br />RE: Overburden Analysis <br />Dear David: <br />This letter is in response to the June 17, 1981 memo to <br />operators from the Mined Land Reclamation Division. A few <br />minor suggestions regarding overburden sampling parameters <br />should be taken into consideration. First, Ph, Alkalinity <br />and total dissolved solids provide the information necessary <br />to calculate bicarbonate and carbonate. Therefore, it seems <br />duplicative to require specific measurement of these two <br />constituents. Second, phosphate and phosphorous are very <br />closely related. Therefore, one questions the need for <br />specific analysis of each. Third and lastly, a member of <br />the Division described molybdenum content of overburden as a <br />problem associated with surface coal mines in the east. <br />Consequently, the sampling parameter was included on the <br />list to determine if such a problem exists in surface coal <br />mines in Colorado. It seems that sampling parameter requirements <br />should be supported with substantive documentation as you <br />are no doubt already aware. <br />Though brief, I hope these comments have been of some assistance <br />to you. I appreciate the opportunity to respond on this <br />concern. If you would like to discuss these matters further, <br />please do not hesitate to contact me. <br />Sincerely, <br />Iu~O~I /Y•~i~ <br />Rade H. Orell <br />Environmental Supervisor <br />RHO/men - <br />