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DMR Copy of Record <br />Permit <br />Permit #:CO0045161 Permittee:Colowyo Coal Co LP Facility:COLOWYO MINE <br />Major:No Permittee Address:PO Box 33695 <br />Denver, CO 80233-0695 <br />Facility Location:5731 SOUTH HIGHWAY 13 <br />MOFFAT COUNTY, CO 81641 <br />Permitted Feature:003 <br />External Outfall <br />Discharge: 003-A <br />Gossard Pond to Wilson Creek <br /> <br />Report Dates & Status <br />Monitoring Period:From 05/01/19 to 05/31/19 DMR Due Date:06/28/19 Status:NetDMR Validated <br />Considerations for Form Completion <br />Alternate limitations for TR iron and settleable solids - see pg 6 and 8. Oil and grease - see I.C.1.b, pp 5-6. Report SAR calculated limit at MLOC=EG; adjusted SAR effluent at MLOC=P. <br />Principal Executive Officer <br />First Name:Barbara Title:SVP, Policy and Compliance, CCO Telephone:303-452-6111 <br />Last Name:Walz <br />No Data Indicator (NODI) <br />Form NODI:-- <br />Parameter Monitoring Location Season #Param. NODI Quantity or Loading Quality or Concentration # of Ex.Frequency of Analysis Sample Type <br />Code Name Qualifier 1 Value 1 Qualifier 2 Value 2 Units Qualifier 1 Value 1 Qualifier 2 Value 2 Qualifier 3 Value 3 Units <br />00094 Conductivity 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG 7B - dS/m 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge <br />00400 pH 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. >=6.5 MINIMUM <=9 MAXIMUM 12 - SU 01/30 - Monthly GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />00440 Bicarbonate ion- [as HCO3]1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 19 - mg/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />00530 Solids, total suspended 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. <=35 30DA AVG <=70 DAILY MX 19 - mg/L 01/30 - Monthly GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />00918 Calcium, total recoverable 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 19 - mg/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />00921 Magnesium, total recoverable 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 28 - ug/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />00923 Sodium, total recoverable 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 19 - mg/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />00931 Sodium adsorption ratio EG - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 1U - Ratio 02/30 - Twice Per Month CA - CALCTD <br />Value NODI C - No Discharge C - No Discharge <br />00931 Sodium adsorption ratio P - See Comments 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 1U - Ratio 02/30 - Twice Per Month CA - CALCTD <br />Value NODI C - No Discharge C - No Discharge <br />00978 Arsenic, total recoverable 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG 28 - ug/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge <br />00980 Iron, total recoverable 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. <=1000 30DA AVG <=6000 DAILY MX 19 - mg/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />01303 Zinc, potentially dissolved 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 28 - ug/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />01304 Silver, potentially dissolved 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 28 - ug/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />01306 Copper, potentially dissolved 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 28 - ug/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />01313 Cadmium, potentially dissolvd 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 28 - ug/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge C - No Discharge <br />01314 Chromium, trivalent, potentially dissolvd 1 - Effluent Gross 0 -- <br />Sample <br /> <br /> <br />Permit Req. Req Mon 30DA AVG 28 - ug/L 02/30 - Twice Per Month GR - GRAB <br />Value NODI C - No Discharge