Laserfiche WebLink
(Page 2) <br />MINE ID # OR PROSPECTING ID # M-1994-108 <br />INSPECTION DATE 8/28/07 INSPECTOR'S INITIALS RCO <br />OBSERVATIONS <br />This inspection was performed by the Division as part of its monitoring of Construction Materials 112c permits and in response <br />to a written citizen complaint. The operator was contacted about the scheduled inspection, and the operator named on page <br />one was present during the inspection. <br />The required permit ID sign was posted at the entrance to the site and permit boundary markers (mainly existing fencelines <br />were observed in place. The site was active on the day of the inspection, with excavation of native material, crushing and <br />screening, washing and stockpiling, plus asphalt batching and hauling offsite. There was a wheeled loader moving material <br />exclusively for reclamation also. Sky Ute Sand and Gravel is carrying out the excavation and processing. Kirkland is carrying <br />out the asphalt batching. Asphalt batching is an approved activity (under technical revision TR-01, in 1997). These activities <br />are occurring presently on an intensive schedule for two local paving contracts which must be completed during a limited <br />window of time. The asphalt equipment is inspected by the Air Pollution Control Division of CDPHE, and is incompliance with <br />the APEN permit. <br />The mapped areas shown on the recent annual reports corresponds closely to the active areas observed. Mining is proceeding <br />to the south, with the wash plant and ponds in the north, and crushing and batching in the central area. There is a scale on the <br />southern end of the operation. All products, including natural and crusher fines and sediment cleaned from the ponds, find a <br />use at the pit. If they are not sold, they are used in the backfill and growth medium for reclamation. The highwall is excavated <br />vertically, and aggregate mined down to the underlying shale layer. Backfill material is placed above the irregular shale layerto <br />level the floor for drainage and post-mining land use. The northern end of the highwall is being backfilled and sloped as <br />excavation moves to the south, but no topsoil has been replaced yet, nor revegetation begun. <br />The plan currently allows a specific amount of disturbance, and if activities have accelerated and more acreage is needed, the <br />operator must submit another technical revision to allow such expansion. The bond will be recalculated after such revision is <br />approved. <br />As mining proceeds, and equipment and product stockpiles occupy more area on the pit floor, stripped topsoil must be <br />stockpiled out of the way of future mining to avoid deterioration. Earlier in 2007, a new topsoil stockpile are has been <br />established upon the unmined ground at the south end of the permit. This new soil surface can be vulnerable to erosion, and <br />especially subject to wind erosion. The pile has begun to "crust over', lessening the likelihood of blowing soil, but the operator <br />in <br />All drainage reports to sediment ponds or berms along the pad. There is no surface discharge from the disturbed areas of the <br />site. All hydrocarbon tanks are kept in impermeably-lined secondary containment structures. There is no evidence of stained <br />soils or spills. The operator is in compliance. <br />The site has a noxious weed control plan, which appears to be functioning adequately against the common noxious weeds, <br />such as Canada thistle, musk thistle and Russian knapweed. However, the sediment/wash ponds, which have existed for <br />many years there, are beginning to show a few tamarisk plants. Since this appears to be a fairly new invader, and since there <br />is a weed control plan for this permit, there is no problem noted, but the operator must update the plan to include monitorino <br />and treatment of this species too. Please contact the county or local weed control officer for the necessary information, and <br />forward a copy of the updated plan to this office. All weed control activities should be reported in detail in the annual reports, as <br />well as the mining and reclamation. This office will check your upcoming reports for description of these activities. <br />No further items were observed during the inspection. Responses to this inspection report should be directed to the Division of <br />Reclamation, Mining and Safety, 701 Camino del Rio, Room 325, Durango, Colorado 81301, Attn: Bob Oswald; phone no. 970- <br />247-5193. (Please note the new room number, and revise your records as necessary.) <br />Cont. <br />