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.- Richard D. Lamm Governor DEPARTMENT OF NATURAL RESOURCES David H. GetcheA Eaeculive Director MINED LAND RECLAMATION DIVISION DAVID C. SHELTON, Director ~, III I IIIIIII III September 12, 1984 Mr. Larry Reschke Grand Mesa Coal Company P.O. Box 226 Delta, Colorado 81416 Re: Stipulation Response, File No. C-034-81 Dear Mr. Reschke: The Division has reviewed responses to Stipulations No. 1 and No. 3. The Stipulation No. 2 response will be reviewed in the near future. /The response to Stipulation No. 3 is satisfactory. The alternative sediment cnrtt`rol measures proposed for the 4.8 acre area east of the railroad tracks at the loadout are acceptable and, pursuant to Rule 4.05.2(3), the Division hereby grants a small area exemption from the sediment pond requirement for that area. With respect to the Stipulation No. 1 response, we have the following comments: 1. The basis for allowing sufficient capacity for only 24 hours of mine water storage should be provided. 2. The response states that mine water is primarily settled underground. A description of how this is accomplished should be provided, in light of the fact that, in the past, mine water pumped into the pond has contained relatively high amounts of suspended clay particles. 3. The Division generally requires that sufficient capacity be provided to allow for 3 year's sediment storage. This is primarily due to the fact that, during the period following reclamation equipment is generally not readily available and the 3 year sediment storage reduces the maintenance frequency. In this case, since the pond will be replaced prior to final reclamation the 3 year requirement can be waived. However, since frequent maintenance may be necessary, we will require that Grand Mesa commit to sediment survey on a quarterly basis. 423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (30~) 866-3567