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. t. State of Colorado Mr. Gary Curtiss June 6, 1997 page two 4. continued-- Division of Minerals and Geology The mining will be initially conducted such that the processing area which is on Bench #2 will be shot back and expanded back into the quarry to the West, until the bench and highwalls are maximized tying into the Bench 3. The processing equipment will then be moved back and Bench 1 will be shot back to enlarge the Bench 1 shipping and turn around area as well as the stockpile area. Upon both of these being completed, the mining will progress back, maximizing Bench 2, 3, and 4 rock production until the benches are minimized above 2 (the processing equipment area), and the highwalls above 2, 3 and 4 are maximized. At this point, the mining will move up to the further most level and begin the finished highwalls and benchs coming down, eventually landing at the level 2 elevation, allowing for a reasonable drainage slope in the floor. The last step will be to lower the balance of the area to the bench 1 elevation, and then the final reclamation of the benchs can take place. The crusher fines will not be stockpiled long term, any different than any other products. It is our intent to ship both crusher fines and base course to our regular customers on an ongoing basis, so that they do not overtake our storage areas. More than adequate topsoil exists either in the current stockpile area and/or new product to be stripped in the course of mining in the future. Adequate stockpile area exists for this. The commitment exists within the County permits to place the 14" topsoil as stated in the reclamation plan. This shall serve as our affirmative commitment to this as well as the 3:1 sloping as a maximum slope in all areas other than solid rock highwalls. It is our intent to maintain the design volumes of the ponds as outlined in the drainage plan. These may be increased over time, and we will likely include the crushing/processing equipment within a detention pond area, and if so, we will maintain equal or greater volumes at all times during the course of mining. 5-7.These are answered in ~4 above, which serves as our mining plan. Please find enclosed a copy of the Jefferson County Permit documents which calls out the blasting requirements, together with an independent study for the property prepared by Micro geophysics Corporation which concludes the .5 in/sec criteria which was then used by Jefferson County and incorporated within their permit. We will be adhering to these requirements, as well as submitting annual reports of the blasts as spelled out in the Jefferson County Permit as well. This shall serve as our affirmative commitment to incorporate this criteria into the MLRB permit as well.