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TWENTYMILE COAL COMPANY - FOIDEL CREEK MINE
<br />18-LEFT VENTILATION SHAFT INSTA LLATION
<br />TECHNICAL REVISION TR06-66 TECHNICAL ADEQUACY
<br />SUMMARY OF REVISIONS/ADDITIONS (04/13/05)
<br />REVISION/ADDITION DESCRIPTION PLACEMENT INSTRUCTIONS
<br />RECLAMATION COST ESTIMATE
<br />Reclamation Cost Estimate Insert in Bonding Calculations in
<br /> Volumes IA
<br />TABLE OF CONTENTS
<br />List of Exhibits - Pages iv, vi, List of Exhibits revised to include Replaces List of Exhibits Pages iv, vii,
<br />vii, viii, ix, and xii Exhibits 6R, 8DD, 16G, 25Y, and viii, ix, and xii in Volumes I, and II
<br /> 49R through HE
<br />INFORMATION ON ENVIRON MENTAL RESOURCES (RULE 2.04 )
<br />Pages 2.04-9, 50.3, 50.4, 61.2, Revised text addressing cultural Replace Pages 2.04-9, 50.3, 50.4,
<br />61.3, 62, 80. 1, and 81.2 resource, soils, vegetation, and 61.2, 61.3, 62, 80. 1, and 81.2 in
<br /> wildife information for the 18-Left Volume I
<br /> Shaft project area
<br />OPERATIONS PLAN - MINE FACILITIES (RULE 2.05)
<br />Pages 2.05-45, 45.1, 45.2, 45.3, Revised operations and reclamation Replace Pages 2.05-45, 45.1, 45.2,
<br />45.4, 45.5, 45.6, 45.6a, 45.6b, plan text describing 18-Left Shaft 45.3, 45.4, 45.5, 45.6, 45.6a, 45.6b,
<br />45.6c, 45.6d, 45.6e, 45.6f, facility development, operation, and 45.6c, 45.6d, 45.6e, 45.6f, 45.6g,
<br />45.68, 45.6h, 45.51, 45.6j, reclamation plans 45.6h, 45.51, 45.6j, 45.7, 46, 46.1, 47,
<br />45.6k, 45.61, 45.7, 46, 46.1, 47, 74.2, 74.3, 84.4, 84.5, 106. 1, and
<br />74.2, 74.3, 76, 77, 78, 79, 80, 106.2 in Volume I
<br />81, 82, 83, 84, 84.1, 84.2, 84.3,
<br />84.4, 84.5, 84.6, 84.7, 84.8,
<br />106.1, and 106.2
<br />TABLES
<br />Table 49A - Topsoil Stockpile
<br />' Revised table including topsoil Replaces Table 49A in Volume IVA
<br />Summary volumes for 18-Left Shaft
<br />EXHIBITS
<br />Exhibit 6R, 18-Left Ventilation New exhibit incorporating Insert after Exhibit 6Q in Volume II
<br />Shaft - Supplemental Cultural cultural resource survey results
<br />Resource Investigations for additional disturbance areas
<br />Exhibit 81313, 18-Left Ventilation New exhibit providing drainage Insert after Exhibit 8CC in Volume
<br />Shaft-Drainage Designs design information for 18-Left 11-B
<br /> Shaft
<br />Exhibit 16G, 18-Left Ventilation New exhibit incorporating soils Insert after Exhibit 16F in Volume
<br />Shaft - Soils Investigations investigations report for 18-Left 11-B
<br /> Shaft
<br />Exhibit 23, Fish and Wildlife Consultation letter for 18-Left Insert at back of Exhibit 23
<br />Consultation Letters Shaft
<br />Exhibit 25Y, 18-Left Vantilation New exhibit incorporating Insert after Exhibit 25X in Volume
<br />Shaft - Foundation and Road geotechnical design report for 18- II-C
<br />Investigations Left Shaft
<br />Exhibit 49R, 18-Left Ventilation New exhibit, which includes Insert after Exhibit 49Q in Volume
<br />Shaft - Design Drawings design drawings for 18-Left Shaft II-E
<br /> (includes Figures EX49R-F2
<br /> through F7
<br />MAPS
<br />Map 23, Mine Plan Revised map showing underground Replaces Map 23 in Volume V-A
<br /> tie-in of 18-Left Shaft
<br />Map 24, Surface Facilities and Revised map showing 18-Left Shaft Replaces Map 24 (4 of 4) in
<br />Freshwater Systems (4 of 4) Facilities Volume V-A
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