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-2- that the company's material balance, assuming the 160 overburden swell factor, projects an overall material deficit of approximately 52,700 cubic yards of material. The company should amend its post-mining topographic maps and narrative descriptions to depict and describe its plan to accommodate this deficit of backfill material. in order to assure resolution of this entire concern prior to a stage in the mining operation which will allow flexibility in accoimrodating the backfilled deficit among the various pits and stockpiles, the Division deems it appropriate to impose the following stipulation upon permit approval. Stipulation: THE DIVISION DIRECTS TRINIDAD BASIN MINING COMPANY TO AMEND ITS POST-MINING TOPOGRAPHIC MAPS AND APPROPRIATE PERMIT APPLICATION NARRATIVES TO SPECIFICALLY DISCUSS ITS PLAN TO ACCOMMODATE THE PROJECTED BACKFILL MATERIAL BALANCE RESULTS PORTRAYED IN CORRECTED TABLE V 1 OF THE AMENDED PERMIT APPLICATION. THESE APPLICATION AMENDMENTS SHALL BE SUBMITTED TO THE DIVISION FOR REVIEW NO LATER THAN 60 DAYS FOLLOWING APPROVAL OF THE PERMIT. MINING SHALL NOT PROCEED BEYOND CUT NO. 13 OF PIT NO. 4_PRIOR TO WRITTEN APPROVAL BY THE DIVISION OF THESE AMENDMENTS. XXIV. Special Categories of Trinidad Basin Mining Company proposes to auger mine contemporaneously following contour pit surface extraction at the Trinidad Basin Mine. Their plan is found to be in compliance with the req~:irements of the permanent program regulations. The majority of the Trinidad Basin Mine contour strip mined permit area comprises a "steep slope mining" area, in the opinion of the Division. The material analyses and stability analysis contained within the amended application docu- ments derrnnstrate the operator's plan to be in compliance with the performance standards and design standards of the permanent program regulations.