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<br /> <br /> <br />Section V - Decision to Require Revisions <br />The following items pertain to various portions of the Orchard Valley and <br />Orchard Valley West Mine documents which must be revised or updated to reflect <br />site conditions or status. Cyprus Orchard Valley Coal Corporation should <br />submit the requested materials by May 31, 1992. <br />Please submit a technical revision which provides a hydrologic budget for <br />the Stevens Gulch drainage basin, incorporating the monitoring data <br />collected from the operation of the Stevens Gulch evaporation pan <br />(2.04.8>(1)(b> and (c>. <br />2. Please submit a letti•i~r responding to the concerns raised by Kent Gorham <br />(MLRD) in his A.H.R. review letter dated October 29, 1991. <br />3. Please provide a copy of the West Roatcap Creek water quantity monitoring <br />plan that was submitted by CWI to satisfy Stipulation No. ~ of the 1985 <br />Findings (currently Stipulation No. 3~). Please indicate whether this <br />plan was implemented and, if not, provide an explanation. <br />4. Please submit a technical revision which provides a concise table of all <br />groundwater, surface water, mine inflow and subsidence monitoring <br />stations. This table should include: <br />a) Monitoring locations <br />b> Monitoring frequency for each station <br />c) Reporting frequency for each station and what form this report takes <br />(i.e. AHR, NPDES, etc.) <br />d) Reference to what parameters are included in each monitoring event. <br />(Note: You may want to combine this request with the submittal requested <br />at No. 1 above). <br />5. Please submit a minor revision to exclude the references made to the rock <br />slope tunnels that were to be driven under the fire area of the <br />Orchard Valley portals. <br />6. Please submit a technical revision which identifies all areas of the mine <br />which do not drain to a sediment pond, and for which there is no <br />"small area exemption" demonstration as required by Rule 4.05.2(3). <br />Please include the required demonstration for each area identified. <br />-23- <br />