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r Nt` <br />Preliminary Adequacy view . <br />Grand Mesa Coal Co. ~ed Canyon Mine <br />May 8, 1981 <br />5. An analysis of the "D" coal seam, as required by 2. 04.6(2)(a)(iiiJ(C) <br />must be submitted. Both the "E" seam and the "D" seam analyses should <br />include a organic, ~ pyritic, and ~ sulfate sulfur. <br />6. Rule 2. 09.6(2)(a)(iv)(C)&(D) require physical and chemical analyses <br />of roof, floor and interburden material. Attaclicd as appendix A is a list <br />of the parameters requested by the Division to make written findings re- <br />lated to hydrologic consequences and potential for reclamation. In some <br />cases, given Zoca1 environmental conditions, not all of these parameters <br />will be required. should the applicant feel that adequate information has <br />been obtained from on-site data collection or another substantiated source <br />to indicate that a parameter or parameters do not warrant testing, then a <br />thorough analytical discussion related directly to the specific characteristics <br />of the mine should be included in the application. <br />2.09.7 Hydrologic Description <br />7 (1) Groundwater <br />1. Additional water quality parameters may be required in subsequent <br />monitoring of both groundwater and surface water. Attached as Appendix B <br />is the Zist of parameters requested by the Division. Exemptions from <br />including certain parameters may be allowed if the applicant can substantiate <br />that the particular parameter does not warrant testing (see comments under <br />2.04.6, item d(bf this letter). Grand Mesa has not included aluminum, <br />nickel and sulfide in the analyses. Ba.selinc data submitted in the mine <br />plan contain analyses for only one sample. puarterly samples should be <br />taken for a full year to determine seasonal variations. <br />2. At Least one monitoring well should be completed in the alluvial aquifer, <br />above the subcrop, to monitor Che induced recharge (approximately 100-1000 <br />gal/min) referenced on page 61 of the mine plan. water quality data should <br />also be sampled at this well. The applicant should detail how the proposed <br />monitoring plan will document Che assessment of probable hydrologic con- <br />sequences with respect to the projected area of influence of mining upon <br />the alluvial.,groundwater, <br />3. The applicant states on page 6D of the mine plan that the Lasater and <br />Cargill wells need to be monitored on a regular basis to insure adequate <br />water supply. A schedule for monitoring and a list of parameters should <br />be submitted. <br />4, The si.x piczomcter wells to be sampled quarr.!~rly for water elevation <br />should be sampled (or quality at the same time, or justification provided <br />for omitting the quality analysis. <br />2.04.7 (2) 5urfacc Water <br />1. The location of all surface water bodies Ira.s not been provided. Page <br />62 of the mine plan refers to Land Use Map 2.04.3(2)(1)-1 for t7re locations, <br />but his map is inadequate. <br />