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Bowie No. 2 Mine C 1996083 Technical Revision No. 84- Second Adequacy Review Page 5 of 15 <br />38. Map 21 -1 Drainage Plans: Response accepted. Items a and b were resolved with revised Map 21 -1. <br />39. Map 21 -3 Drainage Plans: <br />a) Response accepted. BRL revised the map as requested. <br />b) Response accepted. BRL revised the map as requested. <br />40. Map 22 -J Pond J Detail: <br />a) Response accepted. BRL revised the map to indicate the location of the secondary dewatering pipe. <br />b) Response accepted. BRL provided the inlet elevation and construction information and will provide the <br />outfall elevation when the as -built certification survey is completed. <br />c) Response accepted. BRL corrected Note 1 as requested. <br />d) Response accepted. BRL revises the map as requested. <br />e) Response accepted. BRL revises the map as requested. <br />f) Response accepted. BRL revised the map as requested. <br />g) Response accepted. BRL revised the map as requested. <br />h) BRL revised the Minimum Ditch Depth Requirements Table, lower middle of map, as requested. There <br />is one inconsistency remaining with the 1% section of the ditch flow depth - the design information <br />indicates that the flow depth is 1.2'; the table lists 1.5'. Please revise the ditch table on Map 22J so <br />that it is consistent with the design information on page Volume XI, App. a -73. <br />i) Response accepted. BRL revised the map as requested. <br />k) New Item — The Minimum Culvert Size table on Map 22 -J indicates that the minimum size for Culvert J2 <br />is 30 ". The design information on page Volume XI, App. B -30 calls for a 24" culvert. Please revise the <br />culvert table on Map 22 -I so that it is consistent with the design information on page Volume XI, <br />App. B -30. <br />41. Map 32 will be reviewed under Technical Revision No. 77. <br />42. Figure I of Volume XI Coal Mine Waste Disposal Area - <br />a) Response accepted. BRL revised the map as requested. <br />b) Response accepted. BRL revised the map as requested. <br />c) Response accepted. BRL revised the map as requested. <br />d) Response accepted. BRL revised the map as requested. <br />CIRCES Cost Estimating Soffi are <br />