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Mr. Gregg Squire <br />Page 5 <br />December 21, 2000 <br />To study the feasibility of the renewable resource area, the operator is proposing to mine the area <br />in two phases. The first phase contains approximately 17 acres and is in the southern portion of <br />the renewable area in what appears to be the more active section of the overflow channel. The <br />second phase contains approximately 6.71 acres and would be mined if the renewable resource <br />area proves feasible. By locating the first mining phase of the renewable resource area in the <br />more active section of the overflow channel and using the upper and lower end barriers to prevent <br />realignment of the main channel under normal runoff flows, the impacts to the river are expected <br />to be minimal. This mining approach will provide an area for bedload deposition in the overflow <br />channel in a manner similar to what has been happening since it was formed in the 1980's. <br />The renewable resource area is approximately one mile upstream from the City of Rifle's intake. <br />Item 12- Reclamation of renewable resource area. Item 4 in the response to Mr. Allen Sorenson's <br />review comments provides the reclamation plan details if the renewable resource area does not <br />become part of the main river channel. <br />Item 13 -Future mining areas Snyder property. Prior to disturbing the future mining areas on the <br />Snyder property, the operator will submit and secure approval of a permit amendment that <br />complies with all applicable OSE and DMG requirements. <br />Item 14 -Mining Depths. The gravel resource depth is expected to range from 10 to 25 feet in <br />depth. The overburden depth is expected to range from 0 to 25 feet. The mining depth referred <br />to in the west end is a combination of overburden and gravel depth and is not intended to imply <br />that the resource thickness is changing. <br />Item I S -Potential contaminants stored on site. - The operator intends on storing diesel fuel for <br />mobile equipment and generators running equipment such as crushers and conveyors, grease, <br />hydraulic oil, transmission oil and engine oil on site. The diesel tanks are portable and include a <br />lined containment structure with 110% the capacity of the tank(s). The hydraulic, engine and <br />transmission oils and grease are stored in drums either on trailers or in a portable shop at the <br />surface facility site in the Dry Creek mining area. The operator will develop a Spill Prevention, <br />Countermeasures and Control Plan for the site per Item 31 to address the prevention and/or <br />cleanup of any spills. <br />Item 16 -Treatment of processing and wash plant water. -The operator intends on pumping the <br />processing and wash plant water into holding ponds in the pits to settle the suspended solids prior <br />to discharging any water. The fines will be left in the pit for use in backfilling the pits. Any <br />discharging of water into the Colorado River will be in accordance with a NPDES permit. <br />Item 17 -Treatment of processing and wash plant water. -Per item 16, Any discharging of water <br />into the Colorado River will be in accordance with a NPDES permit. <br />