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January 4, 2013 C-1996-083/13owie No. 2 Mine SLB Inspection Topic Summary NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA—Not Applicable N -Air Resource Protection N -Roads N -Availability of Records N -Reclamation Success N -Backfill &Grading N -Revegetation NA -Excess Spoil and Dev.Waste N - Subsidence N -Explosives N - Slides and Other Damage N -Fish&Wildlife N - Support Facilities On-site R -Hydrologic Balance N - Signs and Markers R -Gen. Compliance With Mine Plan NA - Support Facilities Not On-site NA -Other NA - Special Categories Of Mining R -Processing Waste N -Topsoil COMMENTS This was a partial, aerial inspection of the Bowie No. 2 Mine based on aerial photographs of the site taken by Harry Ranney of CDRMS on January 4, 2013 and reviewed by Susan Burgmaier of CDRMS on January 8, 2013. The site is actively mining coal from the B seam and is currently seeking approval for a permit revision to expand the permit boundary and mining area. The site was snow covered; activities were observed at the refuse disposal and facilities areas. HYDROLOGIC BALANCE -Rule 4.05❑ Drainage Control 4.05.1, 4.05.2, 4.05.3; Siltation Structures 4.05.5, 4.05.6; Discharge Structures 4.05.7, 4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13; Drainage—Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: Ponds B, C, D, and F all held water and were covered by ice and snow. It was not apparent whether any were being discharged. GENERAL MINE PLAN COMPLANCE: It appeared that the operator has implemented the disturbance proposed with Technical Revision No. 76 prior to approval by the Division. Earthmoving activities were observed between Gob Pile 42 and Gob Pile 44, in an area not currently approved for disturbance. The Division will, as required by Rule 5.02.2(3)(b),investigate this matter on-site. PROCESSING WASTE/COAL MINE WASTE PILES —Rule 4.10 and 4.11❑ Drainage Control; Surface Stabilization; Placement: Gob was being placed on Gob Pile #2,on the west end of the third bench(between ditches F2 and F12) and at the northern tip/upper bench. It appeared that water was impounded on the third bench,below recently placed gob. Care must be taken in placing gob to ensure that drainage off of the pile is maintained. The diversion ditch configuration approved under Minor Revision No. 132 had been implemented. It also Number of Partial Inspection this Fiscal Year: 9 Number of Complete Inspections this Fiscal Year: 2 Page 2 of 5