2012-03-13_INSPECTION - C2009087

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March 7, 2012 C -2009- 087 /Peabody Sage Creek Mine JDM Inspection Topic Summary NOTE: Y= Inspected N =Not Inspected R= Comments Noted V= Violation Issued NA =Not Applicable Y - Air Resource Protection R -Roads R - Availability of Records Y - Reclamation Success NA - Backfill & Grading N - Revegetation NA - Excess Spoil and Dev. Waste NA - Subsidence NA - Explosives NA - Slides and Other Damage Y - Fish & Wildlife R - Support Facilities On -site R - Hydrologic Balance Y -Signs and Markers R - Gen. Compliance With Mine Plan NA - Support Facilities Not On -site R - Other NA - Special Categories Of Mining NA - Processing Waste R - Topsoil COMMENTS AVAILABILITY OF RECORDS — Rule 5.02.4(1): All records were checked at the Peabody Sage Creek Mine offices. All required records were on site and up to date at the time of the inspection. The DRMS Availability of Records is attached to this inspection report. HYDROLOGIC BALANCE - Rule 4.05 Drainage Control 4.05.1, 4.05.2, 4.053; 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: Pond 002 (Wadge Impoundment) was iced over and discharging at the time of the inspection. The pond was stable with no problems noted. The discharge was clear. The amount of discharge was not identified through the flume. However, the recording station was observed and functioning as required. The Pecoco Pond was iced over and was discharging into the upper sump as permitted at the time of the inspection. The embankments were stable and snow covered at the time of the inspection. The primary CMP spillway was in good condition and the emergency spillway was stable with no problems noted. The Pecoco Pond had no problems noted. Pond 003 was iced over and had a small amount of discharge at the time of the inspection. The pond embankments were snow covered and stable. The emergency spillway was stable and the primary spillway was functioning as designed. No problems were noted. Culverts and ditches located outside of the South Facilities Area were snow- covered at the time of the inspection. The upper sump was iced over at the time of the inspection. Water was discharging from the Pecoco Pond into the upper sump with a small amount of discharge noted from the upper sump into ditch RC -D3. The embankments of the upper sump were snow covered and were stable at the time of the inspection. Number of Partial Inspection this Fiscal Year: 9 Number of Complete Inspections this Fiscal Year: 3 Page 2 of 6