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(Page 2) <br />MINE ID # OR PROSPECTING ID #: M-2000-113 <br />INSPECTION DATE: 10/20/04 <br />OBSERVATIONS <br />INSPECTOR'S INITIALS GRM <br />This inspection was conducted as part of the normal monitoring program established by the Colorado Division of <br />Minerals and Geology. Division staff met with Lafazge West representatives John Rozelle, Rodney Johnson and <br />2 others for this inspection. Mamm Creek Pit is located on the north side of I-70, and north of the Rifle Airport. <br />The mine identification sign and affected area boundary mazkers are in place and in compliance with Rule 3.1.12. <br />The sign did not have the permit number stated on it, however, Lafarge workers corrected it that day. Photo <br />documentation was sent to this office via e-mail to confirm the work. Permit boundaries were easily identifiable by <br />fence lines and visual /flood berms. <br />Staff had a question concerning an azea to the west, outside the current excavation azea. A review of the azea with <br />the maps, which are very busy, shows the area is part of a staging azea approved for such activities. <br />Constructed berms aze primarily topsoil along all boundaries with the exception of the northern which is more of a <br />mix ofmaterials. Slopes along the northwestern edge have been mulched and berms along the south and west have <br />been in place for less than a year. There is a strong likelihood that the topsoil will be rolled back into place by next <br />summer. If they remain longer, the operator will seed them to protect against erosion. (Picture 2) <br />Along the pit floor it was noted that some shale boulders have surfaced. The pit has hit some high shale moguls and <br />is keeping 2 feet of cover over the bedrock as best as possible. (Picture 1) <br />The inspector observed adequate secondary containment for hazazdous materials stored on site. Structures are lined <br />with plastic that appear to be stable and in good repair. <br />All stormwater appeazs to be maintained on site and moved out as part of the dewatering process. Dewatering <br />trenches appeared to be cleaz and approximately 3 to 4 feet below normal ground level elevations. The operator <br />records water test every week and gets a monthly average that is reported to Water Quality Division. Since testing <br />began, only one week has been above acceptable levels and when averaged was not an issue. <br />The Corp of Engineers has reviewed the berm construction at the site. The operator is developing a report to the <br />Corp concerning the construction measures, etc. The inspector has asked that a copy of the report be sent to the <br />Division for the permit file. <br />Wetlands noted within the active permit azea are adequately marked to prevent disturbance. Mining boundaries aze <br />clearly staked as well to prevent over excavation. <br />The bond was reviewed in terms of does the activities on site match the proposed plans. The current bond of <br />$149,153.00 appears to be more than adequate at this time based on area disturbed and current activities. A full <br />update will be undertaken during the next scheduled inspection or if conditions change drastically. <br />Noxious weeds are being actively treated and no infestations are noted within the disturbed azeas. <br />No issues or problems are noted at this time. <br />