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Of the previous permit area of 3,428.5, 1186.4 acres were disturbed (or re- disturbed) by <br />mining permitted under Permit C- 1980 -001. An additional 49 acres had been disturbed <br />. by previous (pre -law) mining, and the remainder remained undisturbed. The 171.2 acre s <br />released from the permit were undisturbed areas. • <br />Acronyms <br />Act Colorado Surface Coal Mining Reclamation Act <br />AVF .. - alluvial valley floor <br />AVS applicant violator system , <br />CDPS • Colorado, Discharge Permit System <br />CDPHE Colorado Department of Public Health and Environment <br />CFR - Code of Federal Regulations <br />cfs cubic feet per second <br />CWQCD Colorado Water Quality Control Division . <br />Division Colorado Division o f Reclamation, Mining and Safety <br />ft /day square feet/day <br />gpm gallons per minute <br />mg/1. , milligrams /liter <br />MSHA . Safety and Health Administration <br />NPDES National Pollution Discharge Elimination System <br />PAP Permit Application Package <br />PHC Probable Hydrologic Consequences <br />Rule Regulations of the Colorado Mined Land Reclamation Board for Coal, <br />Mining <br />SAR Sodium Absorption Ratio <br />Sec Section <br />SMCRA Surface Mining Control and Reclamation Act - <br />TDS total dissolved solids concentration of about 1040 <br />TR Technical Revision <br />2 Geographical Information System measurement, June 1, 2006 <br />C1980-001 Edna Mine Permit Renewal No. 6 4 <br />