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• (Page 3) • MINE ID # OR PROSP CT NG ID # M-$3-033 INSPECTION DATE /~~30~f INSPECTOR'S INITIALS TAS Clear Creek, impairing water quality. During storm events, runoff from the mine flows across U.S. 6 directly into Clear Creek. The Storm Water Discharge Permit required for this mining facility does not appear to be enforced. DMG Response: Mr. Frei indicated that the issue of truck staging, soil/mud carryout, and back-up of truck traffic on the shoulder of U.S. 6 is being addressed. There was no evidence of these concerns during the time of inspection. Mr. Frei indicated that the practice of using a front-end loader to retrieve water from Clear Creek to wash U.S. 6 is no longer being done. Mr. Frei also indicated that Albert Frei & Sons, Inc. is coordinating with representatives of CDOT to design and install a 3 lane pull-out immediately south of the quarry entrance and U.S 6. The 3 lane pull-out will greatly minimize, if not eliminate, sedimentation on the highway and back-up of truck traffic. The project is expected to be completed in April, 2002. This inspector also discussed the operator's current stormwater management practices in the staging areas with Mr. Frei and Mr. O'Brian. The Best Management Practices (BM P's) currently being used are straw bales and silt fences. This inspector agreed to research available or known BMP's to determine if there are more effective alternatives. Mr. Frei expressed an interest and intent to use the best methods available to minimize sedimentation from truck traffic leaving the quarry. A copy of this report and associated complaint letter is being sent to the Water Quality Control Division. 5. DMRA Complaint: This area of Clearly Creek Canyon is prone to high winds that are common during fall, winter, and spring. Residents of our community routinely observe dust clouds from the mine. Mine dust can also be seen in large deposits on the ice covering Clear Creek in winter, which is subsequently transported downstream in Clear Creek during melt- off. The Air Quality Permit required for this mining facility does not appear to be enforced. The covering of loaded trucks is not adequately enforced, resulting in deposition of dust throughout the Canyon corridor to Golden. DMG Response: Mr. Frei indicated that the quarry operation and its dust suppression system is in compliance with the terms of the existing air quality permit issued by the Air Quality Control Division. Mr. Frei also indicated that the existing permit is adequate for production levels of 2 million tons/year and tht Al Frei & Sons, Inc. is currently negotiating with representatives of the Health Department to increase production at the quarry and still maintain adequate air quality standards. This inspector did not notice any excessive fugutive dust at or near the quarry during the site inspection. This inspector noticed during the inspection all loaded trucks leaving the quarry entrance to stage in the parking area immediately south of the quarry entrance and Highway 6 and , to apply a tarp or other suitable cover for dust suppression prior to exiting southbound back onto Highway 6. A copy of this report and associated complaint letter is being sent to the Air Pollution Control Division of the Colorado Department of Health. 6. DNII2A Complaint: The truck weight limits are not adequately enforced, resulting in spillage of material on U.S. 6 throughout the Canyon. DMG Response: This inspector did not see any evidence of spillage of aggregate or quarry materials along U.S. 6 prior to or during the site inspection. Mr. Frei indicated that weight limits are strictly enforced at the quarry/scale area as to help ensure that truckers driving fully loaded trucks, leaving the Walstrum Quarry, are in compliance with CDOT/Colorado State Highway requirements.