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August 11, 2014 C- 1992 - 080 /Carbon Junction Mine MLT <br />Inspection Topic Summary <br />NOTE: Y= Inspected N =Not Inspected R= Comments Noted V= Violation Issued NA =Not Applicable <br />NA -Air Resource Protection <br />R -Availability of Records <br />Y - Backfill & Grading <br />Y - Excess Spoil and Dev. Waste <br />NA - Explosives <br />Y - Fish & Wildlife <br />R - Hydrologic Balance <br />NA - Gen. Compliance With Mine Plan <br />N -Other <br />NA - Processing Waste <br />R -Roads <br />R - Reclamation Success <br />R - Revegetation <br />NA - Subsidence <br />Y - Slides and Other Damage <br />NA - Support Facilities On -site <br />Y -Signs and Markers <br />NA - Support Facilities Not On -site <br />NA - Special Categories Of Mining <br />Y - Topsoil <br />COMMENTS <br />This report documents a complete inspection of the Carbon Junction Coal Mine that was <br />conducted by Marcia Talvitie of the DRMS. The field portion of the inspection took place on <br />Monday, August 11, 2014 beginning at 1:15 p.m. The records check was accomplished on <br />August 12th. <br />Skies were clear and the temperature was in the mid -80's; thunderheads were building to the <br />north of Durango. Ground conditions were dry, although the area had received sporadic rain <br />showers over the past 5 or 6 weeks. <br />AVAILABILITY OF RECORDS — Rule 5.02.4(1): <br />• Records for the Carbon Junction Mine are maintained for public inspection at the offices of <br />Goff Engineering & Surveying in Durango. A completed DRMS Availability of Records <br />form is appended to this report. <br />HYDROLOGIC BALANCE - Rule 4.05 <br />Drainage Control 4.05.1, 4.05.2, 4.05.3; Siltation Structures 4.05.5, 4.05.6; Discharge Structures <br />4.05.7, 4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; <br />Surface Water Monitoring 4.05.13; Drainage — Acid and Toxic Materials 4.05.8; Impoundments <br />4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: <br />There was abundant evidence throughout the site that the permit area had received significant <br />precipitation during recent weeks. A check of CoCoRaHs stations for the areas east, south <br />and west of Durango revealed the following: <br />CO -LP -B: 29 -Jul 0.32" / O1 -Aug 0.19" / 02 -Aug 0.41" <br />CO- LP -22: 29 -Jul 0.75" / 01 -Aug 0.37" / 02 -Aug 0.40" <br />CO- LP -61: 29 -Jul 0.98" / 02 -Aug 1.13" <br />The 10 -year, 24 -hour precipitation event for this permit is 2.25 ". The daily reported totals <br />are significantly less than this amount, but shorter intense bursts of rain are common in the <br />West. <br />Number of Partial Inspection this Fiscal Year: 0 <br />Number of Complete Inspections this Fiscal Year: 1 Page 2 of 13 <br />