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Foidel Creek Mine Mid Term Review <br />Document Prepared by: R. Reilley, DRMS November 2015 <br />Document Location: Document Location: M\\Coal\rar\MidTermReviews Page 3 <br />Precipitation, mean monthly 20 year record. <br />Mean monthly temperatures <br />Seasonal runoff hydrograph and average annual runoff estimates for Fish, Middle and <br />Foidel Creek Watersheds and the physical characteristics of the Fish Creek Watershed. <br />Rule: 2.05.3 (4)(a) -(d) Operation Plan/ Permit Area: Ponds, Impoundments, treatment facilities and <br />Diversions <br />The general requirements of this section call for a general and detailed plan for all ponds and <br />impoundments and that these structures comply with Rule 4.05.6 <br />Pounds and treatment facilities are discussed in permit section 2.05-76.1 to 2.05-84. <br />Adequacy issues: <br />In section 2.05-76.1 through 2.05-84 there seems to be duplicate information and outdated pages. <br />♦ Please clarify Exhibit 8C (1). Was this structure ever built? <br />♦ In the narrative (section 2.05-76.1 through 2.05-84) for the following ponds please <br />insert the Exhibit number and information as to the design precipitation event (for <br />example: 10yr/24 hr. or 25yr/24hr) <br />L Pond B <br />ii. <br />Pond C <br />iii. <br />Pond D <br />iv. <br />Pond E <br />V. <br />Pond F <br />vi. <br />Pond G <br />vii. <br />Pond T <br />viii. <br />FCB Treatment Facility <br />Section 2.05-76-1 regarding Pond D states that the spillway was relocated. <br />♦ Please either provide the exhibit number for updated as built designs for the <br />relocated spillway, or provide a set of updated as builts reflecting the new spillway <br />location. <br />Pond F Exhibit 8I includes a list of As Built Specifications. Exhibit 8P in the permit entitled: Plate 1, <br />Sediment Ponds, Energy Mines No.1 and No. 2 and Eckman Park includes a table entitled Pond <br />Schedule. The Pond Schedule table and Exhibit 8I As Built Specification values differ from each other <br />♦ Please check Exhibit 8I, as built specifications for Pond F against the Pond Schedule <br />in Exhibit 8I and submit a new Pond Schedule table addressing the following values: <br />L Sediment Storage Volume <br />ii. OSM Height <br />iii. Pond Volume <br />iv. Primary outlet size of holes <br />Please submit an as built drawing of Pond F that includes a general plan and <br />crossection of the pond that includes relevant elevations for: <br />L Top of structure <br />ii. Top of standpipe <br />iii. Dewatering holes <br />