1987-12-01_PERMIT FILE - C1981017 (188)

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COLORADO ZMTENT OF HEALTH Water Qua Control Division Rationale - Page 2 PERMIT NUMBER: CO-0000396 FACILITY DESCRIPTION: (Continued) The expected life of the mine is 30 years. A wash plant to clean the coal is located on site, near discharge point 011 . However, the plant uses water from the mine in a closed circuit. Thus , there is no discharge of wash water. The washed coal is sent to a load out facility located approximately 1 mile east of Carbondale, Colorado along the Roaring Fork River. Under the previous permit , the facility had 19 discharge points. However, because the loadout facility is not contiguous with the mine, it is being given a separate permit CO-0039136._j Table 1 below shows the source of water, treatment variations in flow, amount of flow and receiving stream for each discharge point. Discharge points 001 and 006 thru 018 are sedimentation ponds designed to contain surface runoff, flows from these ponds will be seasonal and occur only after precipitation events or snowmelt. 002 thru 005 discharge mine water and will flow 2-4 days per week approximately 6 months -per. yeafA TABLE 1 SUMMARY OF DISCHARGE POINTS FLOW RECIEVING DESIGN POND VOLUME SOURCE TREATMENT DURATION DISCHARGE POINT 3/ FLOW gpm ACRE-FEET STREAM 001 N/A 7. 39 Storm Water Sedimentation Seasonal Coal CK. 002 0 1/ N/A Mine Discharge Sedimentation Intermittent S. F. of Dutch Ck. 003 150 2/ N/A Mine Discharge Sedimentation Intermittent 004 300 2/ N/A Mine Discharge Sedimentation Coal Ck. g Intermittent 005 80 2/ N/A Mine Discharge Sedimentation Intermittent NF of Dutch Ck. 006 N/A 2. 74 Storm Water Sedimentation Intermittent Oil Well Ck. Dutch Ck . 007 N/A . 50 Storm Water Sedimentation Seasonal Bear Ck. 008 N/A .84 Storm Water Sedimentation Seasonal Dutch Ck. 009 N/A 2.69 Storm Water Sedimentation Seasonal 010 N/A .63 Storm Water Sedimentation Seasonal Dutch Ck. 011 N/A 3. 17 Storm Water Sedimentation Seasonal Dutch G k. 012 10.0 .20 Storm Water Sedimentation Seasonal Coal Ck. S. F. of Dutch Ck. 013 N/A .80 Storm Water Sedimentation Seasonal S. F. of Dutch Ck. 014 N/A .30 Storm Water Sedimentation Seasonal Oil Well Dutch 015 N/A .40 Storm Water Sedimentation Seasonal NF of Dutch Ck. Dutch Du 016 25.0 4.0 Storm Water Sedimentation Seasonal 017 35.0 1 .0 Storm Water Sedimentation Seasonal Coal C k. 018 20.0 3.0 Storm dater Sedimentation Seasonal S.F. of Dutch Ck