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• i <br />Spider's Aggregate <br />May 9, 1985 <br />Page 3 <br />During start-up of the present operation in 1982, VME-Nitro Consult, Inc. <br />was engaged to monitor blasting operations with seismic instruments. In <br />their report dated July 21, 1982 (copy enclosed), air-blast was identi- <br />fied as a potential problem. In an attempt to reduce air-blast magnitude <br />30 mil Dataline Cord is now being used for all surface detonating connec- <br />tions, resulting in a sizable reduction of air-blast. E-;ord Primicord <br />was used during the VME-Nitro monitoring program. <br />A copy of all blasting activity is voluntarily furnished to the Fremont <br />County Planning and Zoning Department monthly, for their files. <br />EXHIBIT E Drainage Reclamation - Other than the retention dam>, no pits or <br />ponds will be created for final reclamation (see EXHIBIT E, Page 3). Tlie drainage at <br />the Southwest boundary of Area II will be basically free-flowing during operation and <br />after final reclamation. Excavation in the bottom of this drainage will be limited to <br />the amount of working room required for extraction of material located IJortherly of the <br />drainage. When the daylighted floor of the quarry nears the elevation ~~f the drainage, <br />said floor will be left a minimum of four feet higher than the bottom of the adjacent <br />drainage (see Figure 4, enclosed). The final gradient of this particul+-r drainage will <br />be very similar to the original gradient. prior to mining operations. is private access <br />road serving lands of the owner will, however, be left in final reclamation operations. <br />EXHIBIT L Financial Warranty - Amended performance and financial warranties <br />in the amount of $46,050.00 are being prepared and will be presented to you as soon as <br />they are available. <br />I feel that the above adequately addresses all of the concerns listed in your <br />Adequacy Review letter dated April 30, 1985. However, if you have any ~~urther questions <br />or require additional information, please don't hesitate to contact me. <br />Sincerely, <br />~~~~~~ <br />Charles R. Rupp <br />CRR/jlr <br />, <br />.•' <br />*a NU.,~. ,~ ts'i <br />• ° ,'~T <br />` .sr~o ~ ~,~` <br />