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<br />r <br />water elevation Of the adjacent River and Will be <br />constructed of 2-inch perforated plastic pipe (see Mi~inc <br />Plan Map for proposed locations;. Mining will go ..., deeper <br />than ore foot above the ground water elevation or the lco: <br />water elevation of the adjacent River. These pipes shoul3 <br />also alert the miring operaticr. to charges ~.. the _ .,,.nd <br />water elevation. <br />The hydrologic changes to this river caused by this <br />operation will be minimal. The main River channel is to be <br />left where it currently is--before, during and after mining. <br />The protective berm will keep the River in its present <br />locaticn. During high water periods, the River is expected <br />to flow where it is now and at similar rates. The ..,..real <br />surface slope of the high water channel area (the pit area; <br />will be maintained vrhere mining is completed, only it will <br />be 2 to 3 feet deeper as shown on the enclosed .,.css <br />sections. The graded pit area will follow the present <br />surface slope of the high water charnels. <br />3. MINING PLAN: <br />Letters from the U.S. Army Corpe of Engineers dated <br />April 25, 1990 and April 22, 1992 are enclosed. <br />Elevations for the low water level of the Uncompahgre <br />River are as follows: <br />UR-16 '1209.1 U.:-24 7200.3 <br />UR-1~ ?20E.E UR-26 ?19E.2 <br />UR-20 ?205.2 UR-2? ?195.9 <br />UR-22 720.1 UP.-29 ?192. <br />'JR-23 7201.6 E°-5 ?2C6.1? <br />Elevations for the low water elevation cf the River <br />will be reestablished each year before mini..^.g begins. <br />TREES: <br />Peck Inc. has committed to leaving all trees ,.charmed <br />and intact. Peck feels the trees are a valuable asset to <br />the mining operation as they screen the stockpiles and some <br />minicc activity. No gravel will be stockpiled acaiast tree <br />trucks. As shown on Exhibit E-1, three stockpile areas are <br />proposed. Stockpiles and 2, 35' wide by 150' lcng, are <br />ope.^^. oreas within the tree zone and could ,,,,..^.ta_.. 3000 yards <br />cf material. Stockpile 3 by itself could corta... 5000 <br />yards. It should be noted the maximum amount of gravel tc <br />be stockpiled is 5000 yards. Actual stockpiles du. :g <br />operaticr may be less, as only projected needs willybe <br />stockpiled. All material contained in stockpile 3 will be <br />removed prior to the next years' river flood Stayy^2. <br />MINING AND 3:1 SANIS SLOPES: <br />A survey completed by E. Schoaf and Associates in 1990 <br />established numerous elevation control points around and <br />through the permit area. From these points elevations or a <br />50' grid will be established prior to mining each area. The <br />grid points will all be referenced to the low wate_ <br />A <br />