_INSPECTION - C1982057 (5) - Laserfiche WebLink

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May 16,2011 C-1982-057/Seneca II-W Mine SLB Area 6 is a crack that has opened up below the Oil Well Access Road in B Pit reclamation. Area 7 is a slide along the Oil Well Access Road, in B Pit reclamation. Area 8 is a slide on the LU-2 cut face,above the road surface. Area 9 consists of cracks below Haul Road A,upslope of the Pond 006 embankment. Area 10 is a small slide below Haul Road A at the southeast inlet of Pond 006, Area 11 is a crack at the interface of the B Pit highwall and regraded spoils. Further up the 006 Gulch,near Stock Pond T-5,cracks were observed along the former highwall,extending into the shrub enclosure on the north side of T-5 (Area 12 of Figure 2). The shrub plot slide(near the original aspen study plot, along the reclaimed in-pit haul road)had failed again(Area 14 of Figure 2). At Area 13 of Figure 2, small cracks were observed below the Ridgeline access road near the point where it crosses the 006 Gulch. In the northern C/D Pit area several cracks were observed along the interface of the highwall and graded spoil near Stock Pond T-20 (Areas 19 and 20 of Figure 3). In addition to these new slide areas,additional movement was observed in the existing slide areas near Ponds 016 and 016A,particularly upslope of the shrub plot area. The Pond 017 drainage was not accessible due to muddy road conditions, so on the ground observations of the slide near Stock Pond T-25 in the PM-1 drainage were not possible. Several of the observed areas of instability(006 Gulch/Pits A and B,Pond 017 drainage,T-20/Pits C and D) are within areas that have undergone Phase I bond release. Since these areas will require extensive repairs and additional ground disturbance,the operator will need to submit a technical revision to the approved permit application that identifies the areas of disturbance(detailed map) and the proposed plan for repair and long term stability of these areas. Additional performance bond will be required to implement the approved revision. The Division believes these repairs are beyond normal maintenance and therefore,the repairs on these areas will reinitiate the backfilling/grading and stability requirements for Phase I bond release. These areas will be subject to the liability period of Rule 3.02.3 and the bond release criteria and schedule of Rule 3.03.1. Once Seneca and the Division have an opportunity to evaluate the entire mine site, we will determine what areas will be subject to the reinitiating of the liability period. SIGNS AND MARKERS—Rule 4.02: Mine identification and permit boundary markers were observed at the two entrances to the site on County Road 53 and along the Tie-Across Haul Road(TAHR)corridor. Stream buffer zone markers were observed along the MEHR and TAHR corridors. Number of Partial Inspection this Fiscal Year: 9 Number of Complete Inspections this Fiscal Year: 3 Page 5 of 15