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(8) Coal Processing Wast and Non-coal Processing Waste 1. Disposal methods for coal processing wastes from the wash plant have not been differenciated from the disposal of excess spoil and underground development wastes in the engineering report by Geo Testing Laboratories. These two materials should be differenciated because of the different characteristics of toxicity and of stability. ,(4.10.4 and 4.09.1(12)) Therefore, a description of how the samples were taken for the Geo Testing anaylsis must be provided. If indeed the wash plant was not represented in the sample taken, the applicant must provide effective cohesion and effective friction angle data for this material: If this data would change the determination of the factor of safety below that required by the Division for the design of the waste pile, a new design must be submitted. (see 4.10.4) A1so,construction.methods must be supplied which demonstrate that stability of the different materials will be maintained. 2. The chemical makeup of the coal processing wastemust also be determined pursuant to 2.05.3(8)(a)(i)(C). ' 3. On page 178 the applicant states that the refuse pile will be covered by "up to 36 inches of non-toxic and non-combustible material and submaterial." If the coal processing waste is indeed toxic or acid producing, 4 feet of non-toxic, non-acid forming material must be used as cover, unless it can be demonstrated that performance standard 4.15 can be met. (4.10.4(4)) (see 4.14.3(1)(b)) The structure must be inspected for stability by a registered engineer or other qualified specialist experienced in the construction of earth or rockfill embankments at least quarterly throughout the construction. 9.09.1 (Z 1) According to this regulation, a certified report must be supplied to the Division within two weeks after each inspection. (10) Return of coal processing waste to underground workings 1. If coal processing waste is to be returned to abandoned workings as stated on page I79 the applicant must submit a revision pursuant to 2.05.3(10). 2.05.4 Reclamation Plan 1. A statement must be supplied which states the methods recommended ' 'in the consultant's reports will be followed as described. 2.05.9 (a) 2. The Division recommends a change in the seed mix for temporary and permanent revegetation. The Smooth Brome should be replaced with Mountain Brome and the Yellow Sweet Clover should be (8)