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ENVIRONMENT, INC. <br />AUOU5T 1 2, 2004 <br />PAGE 3 <br />proposed plan advanced in the adequacy response letter dated <br />3/26/01, item 38 will be used. <br />The following text is a copy of that response. <br />It does appear that PS&G will need to leave an additional 75 foot sough area from what ever <br />prescribed setback they need. I.e. if the setback is 25 feet the total would be IOOfeet marked <br />on the ground, if it is SO feet then IZS feet would have to be left. To avoid a expensive drilling <br />program, PS&G rnuld use ti0 feet at the depth to shale and not mine within 75 feet of the <br />setback umil they know the depth of the deposit. Then if it is shallower than 60 feet the limit <br />would be reestablish and mining could move closer to the structure. It is still to PS&G's <br />advantage to acquire an agreement that albws mining closer than this limit, so if agreements <br />are reached they will be submitted to the Division. <br />In leu of a signed agreement, Platte Sand & Gravel LLC will commit to establishing the mining limits <br />on the perimeter as mining advance thru a lake area. In each area, the formula used will he: sETatcx <br />D/ST,INCE t 75 FEET = D/STANCE TO PEOTECTIiD S7RUCITIRE <br />6. We are still awaiting copies of the agreements and will <br />submit them as soon as they are available. <br />7. I concur with this analysis, I had not looked at it that <br />way. The utilities in question are gaslines so the nota- <br />rized agreements or surface use agreements will suffice. To <br />-keep this going I propose we use the suggested Stipulation <br />until the agreements or engineering plans are provided to <br />the Division. <br />LIST OF ATTACHNEN'PB TO T8I8 RS8PON88i" <br />ADEQUACY EXHIBIT A - CROSS SECTIONS <br />ADEQUACY EXHIBIT B - WEST AREA GROUND WATER MONITORING WELL LOCATIONS <br />REVISEDICOARECTED E%NIHIT'C-LB SHARI(EY~S LA%E MAP <br />I hope these responses have addressed the adequacy questions <br />you had. i will place a copy of this packet with the Weld County <br />Clerk of the Board as required and send you. proof of placement as <br />soon as I have it. If you have any questions please call me. <br />Sincerely, <br />EriVlrOnment, InC <br />~~~~ <br />Stevan L. O'Brian <br />President <br />cc Weld County Clerk <br />Platte Sand & Gravel LLC <br />file <br />enclosures <br />