Laserfiche WebLink
SEP-15-1994 14 52 FRDM TRILRKES 719 488 0756 TO is0sas~ai0b P,b2 <br />• • <br />Natural Gas Pipeline <br />A buried natural gas pipeline crosses the permit area as illustrated <br />On the Exhibit C map. This pipeline is owned by the Greeley Cas Company <br />and its presence was addressed during review of the previous permit and a <br />letter dated May 27, 1987 was submitted to the Division from the Greeley <br />Gas Company. The pipeline wall influence the mining plan as described <br />below. <br />Minine Plan <br />It is planaed that furt:er mining operations will create two pits. <br />The existing pit will be expended in both westerly and easterly directions <br />on the south side of the gas pipeline. Another pit will be created on the <br />north side of the pipeline as illustrated on the Exhibit C map. (Note: <br />the pipeline may be relocated outside the disturbed area at some future <br />point. If so, a single pit will be created.) <br />Ground water is encountered at a depth of about 10 feet below the <br />groLmd surface. The site will be wet mined to approximately 35 feet or so <br />in dfepth using a small dragl:ne. Frontend loaders and/or dozers will be <br />usedl as necessary to assist in the operation. <br />The aggregate to be mined consists of channel and terrace deposits <br />that. range from about SO to 150 feet in thickness. The alluvium lies <br />unconformably over the Dakota sandstone. <br />It is anticipated that the site will be mined less than one hundred <br />eigY~ty (180) days per year. <br />Proc:essinu <br />The aggregate will then be appropriately sized and washed as <br />necessary. Material will be sized using portable crushing and screening <br />equipment. A portable wash pleat is used when concrete aggregate is <br />TOTfiL P.02 <br />