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i COLORADO DEPARTMENT OF HEALTH, Water Quality Control Division Rationale - Page 4. Permit No. CO-0000132. IV. FACILITY DESCRIPTION B. Wastewater Treatment Description (Cont.) the mine drainage, it will be treated in the sediment pond at 011 before discharge. The holding time in the pond is about lb hours. Therefore, it is expected that any chlorine remaining in the mine water will dissipate before being discharged. The renewal permit requires a one-time analysis of several parameters, and chlorine will be included on this list to ensure that none is being discharged (see Section VI .B.3). The discharge points are listed below: Table IV-1 -- Discharge Points D. Pt. Wastewater Source 003 Stormwater runoff 004 Stormwater runoff 005 Stotmwater runoff 006 Stormwater runoff 007 Stormwater runoff 009 Stormwater runoff, 010 Stormwater runoff Oll Mine water Design Treatment Cap., MG Receiving Waters 1 sediment pond 0.001 Elk Creek 5 sediment ponds 0.028 Elk Creek 5 sediment ponds 0.047 Elk Creek 3 sediment ponds 0.096 Elk Creek 1 sediment pond 0.035 Hubbard Creek including loadout area 1 sediment pond O.C12 Elk Creek 1 sediment pond 0.064 Sanborn Creek 1 sediment pond 0.078 Sanborn Creek Discharge points 001, 002 and 008, which were used for mine water at the Somerset Mine, have been inactivated. Discharge point 011 has been added to use for mine water at the Sanborn Mine. Pursuant to the authority of Article 9, Title 25, Regulations for the Certification of Water Treatment Plant and Wastewater Treatment Plant Operators, this facility may require a certified operator. V. PERFORMANCE HISTORY A. Monitoring Data 1. Discharge Monitoring Reports: This facility has not discharged during t e past five years. 2. State Sampling: There are no state sampling results available for this facility. B. Compliance with Terms and Conditions of Previous Permit A review of the information available to the Division has shown no compliance problems with the previous permit.