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<br />MINE ID # OR PROSPECTING ID # <br />INSPECTION DATE 4 9 96 <br />(Page 2) • <br />M-77-002HR <br />INSPECTOR'S INITIALS APM <br />The primary purpose of this inspection was to look at the existing and future quarry areas <br />for factors affecting the bond calculation. The applicant has applied for a conversion from <br />a 110 to a 112 permit at this Bite. The current permitted acreage ie 9.9 acres; the <br />conversion would include a total of 240 acres. The actual mined areas will only be a portion <br />of that total, and the area will be mined in phases with no more than 9.9 acres disturbed at <br />any one time. The site ie located in Larimer County, about 3 miles east and 5.75 miles north <br />of Livermore, CO, at an approximate elevation of 6000 feet. Present during the inspection <br />of the site were Nathan Barton and Steve Monell, representing Colorado Lien Co., and Andy <br />Moore of the Division. <br />Site conditions checked for bond calculation purposes included the following: location of <br />any overburden stockpiles and the approximate push distance and gradient to the area to be <br />backfilled; height of highwalls; and approximate dimensions of the quarry floor. The <br />operator has maintained that the push gradient for backfilling would be about 15 degrees <br />downhill, with an average push distance of 100 feet. A worst-case scenario has highwalls at <br />a height of 60 feet. <br />The approximate pit width ie 300 to 350 feet. The highwalls are about 30 feet currently. <br />Almost all of the overburden is high above the pit floor. The exception is an old stockpile <br />of fines that will be used as backfill. This situation will not occur in future mining, <br />because now these fines are not separated from the other product. Overall, the conditions <br />and mining methodology at this site support the assumptions put forth in the conversion <br />application. In a forfeiture reclamation scenario, maximum push gradients for backfilling <br />will be over 30 percent downhill; there should be little, if any, pushing uphill. <br />There ie a blow-out area on the steep north aide of the current disturbed area where the <br />seeding is not taking hold yet. They had tried hydroseeding first, but it didn't work well. <br />It has been reseeded since then. <br />We looked briefly at the future mining areas of the conversion; this includes three other <br />ridges to the northwest and one area to the southeast of the currently disturbed site. Some <br />of the proposed areas do not have much vegetation. I suggested that they take pictures of <br />each site before mining to document the naturally pre-existing vegetation. <br />I & E Contact Address <br />NAME Mr. Nathan A. Barton <br />OPERATOR Pete Lien & Sone. Inc. <br />STREET P.O. Box 440 <br />CITY/STATE/ZIP Raoid City, SD 57709-0440 <br />cc: Carl Mount, DMG <br />CE <br />BL <br />FS <br />HW <br />HMWHD (CH) <br />SE <br />WQCD (CH) <br />OTHER <br />