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DMR Copy of Record <br />Permit <br />Permit #: C0004SI61 <br />Permittee: <br />Colowyo Coal Co LP <br />Facility: <br />COLOWYO MINE <br />Major: No <br />Permittee Address: <br />PO Box 33695 <br />Facility Location: <br />5731 SOUTH HIGHWAY 13 <br />Denver, CO 80233-0695 <br />MOFFAT COUNTY, CO 81641 <br />Permitted Feature: 006 <br />Discharge: <br />006-A <br />External Outfall <br />RAIL LOOP POND/WILSON CREEK <br />Report Dates & Status <br />Monitoring Period: From 04101117 to 06/30/17 <br />I DMR Due Date: <br />07/28/17 <br />I Status: <br />NetDMR Validated <br />Considerations for Form Completion <br />SETTLEABLE SOLIDS LIMIT APPLIES ONLY IF <-10YR,24HR PRECIP EVENT IS CLAIMED. IF CLAIM APPROVED BY WQCD,TSS & IRON LIMITS WILL NOT BE APPLIED <br />TO REPORTED MEASUREMENTS - SEE I.A.2, PG. 3 FOR BURDEN OF PROOFREQUIREMENTS. <br />OIL & GREASE - 1.B.1.B, PG. 5. ORTRLY SAMPLING INSTRUCTIONS <br />- LC. 11, PG. 5. <br />Principal Executive Officer <br />First Name: Barbara <br />SVP, Policy and Compliance, CCO <br />ITelephone: <br />303452-6111 <br />Last Name: Walz <br />(Title: <br />No Data Indicator (NODI) <br />Form NODI: — <br />Parameter Monitoring Location Season # Par— <br />NODI Quantity or Loading <br />Quality or Concentration <br /># of Ex. Frequency of Analysis <br />Sample Type <br />Code Narne <br />Qualifier 1 Value 1 <br />Qualifier 2 Vat— 2 Units Qualifier 1 Value 1 <br />Qualifier 2 Value 2 Qualifier <br />3 Value 3 Units <br />Sample <br />00400 pH 1 -Effluent Gross 0 – <br />Permit Req. <br />>= 6.5 MINIMUM <br />— <br />9MAXIMUM 12 -SU 01130 -Monthly <br />IS - INSITU <br />Value NODI <br />C - No Discharge <br />C - No Discharge <br />Sample <br />00530 Sdids, total suspended 1 - Effluent Gross 0 – <br />Permlt Rep. <br /><_ 35 30DA AVG — <br />70 DAILY MX 19- mglL 01/30. Monthly <br />GR - GRAB <br />Value NODI <br />C - No Discharge <br />C - No Discharge <br />Sam Ple <br />00545 Sdids, settleable 1 - Effluent Gross 0 – <br />Permit Req. <br />Req Mon 300A AVG <br />Req Mon DAILY MX 25 - mL/L 01130 - Monthly <br />GR - GRAB <br />Value NODI <br />C - No Discharge <br />C - No Dlstlrarge <br />Sample <br />0D9801ro,, total recoverable 1 - Effluent Gross 0 – <br />Permit Req. <br /><= 1 300A AVG <br />Raq Mon DAILY MX 19 - ng/L 01/30 - Monthly <br />GR - GRAB <br />Value NODI <br />C - No Discharge <br />C - No Discharge <br />Sample <br />03582 Oil and grease 1 - Effluent Gross 0 – <br />Permit Req. <br />r_ <br />101NST MAX 19 - mg/L 77/77 - Contingent <br />GR - GRAB <br />Value NODI <br />C - No Discharge <br />Sample <br />50050 Flow. In conduit or thm treabrent plant 1 - Effluent Gross 0 – <br />Permit Re, Raq Mon 30DA AVG <br />Raq Mon DAILY MX 03 - MGD <br />01/30- Monthly <br />IN - INSTAN <br />Value NODI C - No Discharge <br />C - No Discharge <br />Sample <br />70295 Sold, total dissolved 1 - Effluent Gross 0 – <br />Permit Req, <br />Raq Mon 30DA AVG <br />Rao Mon DAILY MX 19 - nxp_ 01/90 - Quarterly <br />GR -GRAB <br />Value NODI <br />C - No Discharge <br />C - No Disdrarge <br />Sample <br />84066 Oil arxf grease visual 1 - Eflluant Gross 0 -- <br />Permlt Re, <br />Req Mon INST MAX 9P - N=0:Y-1 <br />01130 - Monthly <br />VI - VISUAL <br />Value NODI <br />C - No Discharge <br />Submission Note <br />If a parameter row does not contain any values for the Sample nor <br />Effluent Trading, then none of the following fields will be submitted for that row: Units, Number of Excursions, <br />Frequency of Analysis, and Sample Type. <br />Edit Check Errors <br />No errors. <br />Comments <br />Attachments <br />No attachments. <br />Report Last Saved By <br />Colowyo Coal Co LP <br />User: kblunt@tristategt.org <br />I <br />Date/Time: <br />2017-07-11 07:07 (Time Zone: -06:00) <br />Name: Kurtis Blunt <br />E -Mail: kblunt@tristategt,org <br />