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5. Okie Plaza well (mined through, abandoned 6/94). Please advise the Division of the <br />reclamation status (or plan) for this former Trout Creek Sandstone monitoring/supply <br />well. <br />6. Reclamation plan for water monitoring wells. Please add to Section 2.05.4 of [he <br />permit a description of [he reclamation plan for monitoring wells that specifies each one <br />will be sealed incompliance with Section 4.07 before being mined through. <br />7. Disposal of non-coal waste. Please add to the First of the sentence in Section 4.11.4 <br />wording to the effect: "With the exception of the mines' demolished buildings and <br />facilities Following reclamation, ...." <br />8. Update of Probable Hydrologic Consequences (PHC) section of permit. <br />a. Past and present inflows. Please update pages 2.05-36 and 37 to include inflow <br />information since 1991. <br />b. Source of water Flowing from fault in 2 West Mains. Page 2.05-37 attributes the <br />flow from the fault to the Trout Creek Sandstone, about 300 feet beneath the mine <br />workings. Water quality similarity is the basis for attributing the flow to the Trout <br />Creek. It seems at least equally plausible [ha[ the source is the Middle Sandstone for <br />the following three reasons: <br />1. The 2 West Hydrologic Report in Exhibit 32 of the permit considers the Middle <br />Sandstone as the source based in part on mapping of roof moisture conditions. <br />2. The quality data reported in Table 73 does not appear different enough from data <br />from other aquifers to link the water to only the Trout Creek Sandstone. <br />3. The quality may change as the water travels upward 300 ft. through the clay-gouge- <br />filled fault plane, resulting in water composition significantly different from water <br />sampled directly from a well in the Trout Creek Sandstone. <br />Please revise page 2.05-37 to give at least equal weight to the Middle Sandstone as a <br />source of Flow from the fault. <br />c. Predicted impacts from post-mining discharges to the land surface from the <br />mine workings. Permit page 2.04.15 says the No. 5 and 6 Mines may discharge to the <br />land surface after mining ceases. Please add to the PHC a prediction of the volumes <br />and locations of these discharges, and their impacts. These discharges may be several <br />hundred gpm, based on the mines' pumping history (reported in Annual Hydrology <br />Reports) and the predicted post-mining inflows (permit page 2.05-39). The PHC <br />Eagle No. 5 and 9 Mines Page 7 February 13, 2001 <br />Midterm Review <br />