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(Page 2) <br />MINE ID # OR PROSPECTING ID #: M-iaaa-tna <br />INSPECTION DATE: NnvPmhPr 14, 2nnt <br />INSPECTOR'S INITIALS: y~~ <br />This routine inspection was conducted to comply with the Colorado Mined Land Reclamation Board's di2c[ive that every mine <br />in [he state be inspected once every four years. This inspector was accompanied by: Gary Feiner, Plan[ Manager; Greg Knapp, <br />Senior Environmental Engineer; and Randy ,Mine Superintendent. <br />The mining operation extracts Pierre Shale from a pit on the west side of State Highway 93 in northern Jefferson County, <br />crushes and conveys the shale east of the highway to a processing facility. This facility heats the shale to approximately ?200 <br />degrees F in a rotary kiln to create lightweight aggregate for the construction industry. The shale is mined with an excavator <br />and transported by truck to aratio-feeder that reduces the shale to 6" size and feeds it onto a conveyor that feeds the plant. The <br />plant and conveyor are planned and permitted to remain after the mine is exhausted. <br />A sign was observed at the entrance to the operation, and the boundaries appeared to be clearly marked. <br />The pit slopes an_ mined to approximately 1: I slope that appears stable. iVo adverse jointing or faulting was observed which <br />would adversely affect [he stability of the slopes. All water that falls on affected land is retained in the pit and no evidence of <br />erosion off site was noted. Haul roads are well graded and well maintained to prevent dust generation. <br />An infestation of Diffuse Knapweed was noted in a previous inspection report. This infestation is being controlled by periodic <br />aerial spraying program in conjunction with the nearby Rocky Flats facility. <br />The fuel storage facility appears to be properly constructed and operated. <br />The mine appears [o be well engineered and operated and is proceeding in an orderly fashion. <br />The bond for [he operation has been re-calculated and will be addressed in a separate letter. <br />~2~~~ ~~ <br />~ o00 ~ (0 70 oa~8 ~f I I ~ aas8 <br />I & E Contact Address cc: B~9r. Jim Stevens <br />^ CE <br />NAME: Mr. Garv Feiner ^ BL <br />^ FS <br />OPERATOR: Txi Boulder ^ HW <br />STREET: 11728 Highway 93 ^ HMWMD (CH) <br />^ SE <br />CITY/STATE/ZIP: Boulder, CO 80303 ^ WQCD (CH) <br />