1991-09-03_REVISION - M1984099 (3)

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• Tectonic Construction, Co. Page 3 MLRB Permit & M-84-099 Technical Revision the other south, with a floating bond to cover the additional disturbance before the northern plant are could be reclaimed. While this was practical in the past, the cost to move the plant now outweighs the benefits of the move. The plant will remain in Phase 1 until mining south of the river is complete. We are installing a conveyor across the river from Phase 1 to Phase 2 and will convey the pit-run material back to the plant. We have shown the plant area on the map that accompanies this T. R. , it contains 35 .06 acres. We are using 27 .06 of this area for the processing plant, pit offices, scale house/scale and product stockpile area. The remaining 6.00 acres ± is undisturbed at this time and will remain so until lakes 4 and 5 are mined. A minor change in the Lake development sequence is required because of this change. The changes are to renumber all of the lakes to reflect their order of mining. Since the land under the processing plant can not be mined until the plant is removed, this will be the last area to be mined. The bond, as originally calcu- lated, contained a provision for a floating plant site and while this no longer is the case it covers leaving part of Phase 1 dis- turbed for the entire life of the mine. ADDITIONAL INFORMATION We have notified Weld County of these changes. They indi- cated this was not a significant change to the approved Special Use and no revision was needed. We have a U. S. Army Corp of Engineers permit for the conveyor crossing and a Weld County permit to construct the conveyor crossing. We have an approved Weld County Flood Plane Hazard Overlay Permit as well and our NPDES permit is still valid. The increase lake evaporative loss is covered by a current agreement between J Bar B, Inc. and the St. Vrain Water Conservancy District. If you have any questions regarding this Technical Revision please contact myself, Mr. Winston Ferguson (Ferg) at 444-7444 or Mr. Stevan O' Brian of Environment, Inc. , 423-7297 . Respectfully S mitted, TECTONIC CONS UCTION 'Z2;*Robert H. Lowdermilk President enclosure cc Environment, Inc. J-Bar-B, Inc. file