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DMR Copy of Record <br />Permit <br />Permit #: C00045161 <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: 001 <br />Discharge: <br />001-A <br />External Outfall <br />STREETER GULCH TO GOOD SPGS CR <br />Report Dates d Status <br />Monitoring Period: From 04101/17 to 06/30117 <br />I DMR Due Date: <br />07/28117 <br />I Status: <br />NeIDMR Validated <br />Considerations for Form Completion <br />SETTLEABLE SOLIDS LIMIT APPLIES ONLY IF -1 PRECIP EVENT IS CLAIMED. IF CLAIM APPROVED BY WOCD.TSS 8 IRON LIMITS WILL NOT BE APPLIED TO <br />REPORTED MEASUREMENTS - SEE I.A.2, PG, 3 FOR BURDEN <br />OF PROOFREOVIREMENTS. OIL 8 GREASE - I.13.1 B, <br />PG. 5. QRTRLY SAMPLING INSTRUCTIONS - I.C.11, PG, 5. <br />Principal Executive Officer <br />First Name: Barbara <br />Title: <br />SVP, Policy and Compliance, CCO <br />(Telephone: <br />303-452-6111 <br />Last Name: Walz <br />No Data Indicator (NODI) <br />Form NODI: — <br />Parameter Monitoring location Season Y Param. <br />NODI <br />Quantityor loading <br />Quality ar Concentration <br />1 of Ex. <br />Frequency of Analysis <br />Sample Type <br />Code Name <br />Qualifiert <br />Value Qualifier2 <br />Value Unita Qualifiert Value1 Qualifier2 Value Qualifier Value3 <br />Unita <br />Sample <br />= 791 <br />= 826 <br />12 -SU <br />01107 -Weekly <br />IS - INSITU <br />00400 pH 1 - Effluent Gross 0 – <br />Permit Reg. <br />>= 6.5 MINIMUM <br /><= 9 MAXIMUM <br />12. SU 0 <br />01130- Monthly <br />IS - INSITU <br />Value NODI <br />Sample <br />= <br />25 = 25 <br />19 --IL <br />01130 -Monthly <br />GR - GRAB <br />00530 Solids, total suspended 1 - E1Ruant Gross 0 – <br />Permit Req. <br /><= <br />35 30DA AVG <= 70 DAILY MX <br />19- ngM1 0 <br />01130 - Monthly <br />GR - GRAB <br />Value NODI <br />Sample <br />< <br />02 < 0.2 <br />25-mUL <br />01130 -Monthly <br />GR GRAB <br />00545 Solid, settleable 1 - Effluent Gross 0 – <br />Permit Reg. <br />Req Mon 30DA AVG Req Mon DAILY MX <br />25. nil -i- 0 <br />01/30 -M onthly <br />GR - GRAB <br />Value NODI <br />Sample <br />= <br />0.42 = 042 <br />19-mglL <br />01/30 -Monthly <br />GR - GRAB <br />00980Iron, total recoverable 1 - Effluent Gross 0 – <br />Permit Req. <br /><= <br />1 30DA AVG Req Mon DAILY MX <br />19 - nglL 0 <br />01/30 - Monthly <br />OR - GRAB <br />Value NODI <br />Sample <br />03582 Oil antl grease 1 - Effluent Gross 0 – <br />Permit Reg. <br /><= 10 INST MAX <br />19 - mglL <br />77/77 - Contingent <br />GR - GRAB <br />Value NODI <br />9 - Conditional Monitoring - Not Required <br />This Period <br />Sample = <br />0.111 = <br />0.161 03. MGD <br />01107 -Weekly <br />IN - INSTAN <br />50050 Flow, in co—t or thm tmahnent Want 1 - Effluent Gross 0 – <br />Permit Reg. <br />Req Mon 300A AVG <br />Req Mon DAILY MX 03 - MGD <br />0 <br />01/30 - Monthly <br />IN - INSTAN <br />Value NODI <br />Sample <br />= <br />2020 = 2020 <br />19 -mgt- <br />03/90- Three Every Quarter <br />GR - GRAB <br />70295 Sdids, total dissolved 1 - Effluent Gross 0 – <br />Permit Req, <br />Reg Mon 30DA AVG Req Mon DAILY MX <br />19 - mg/L 0 <br />01190 - Quadedy <br />GR - GRAB <br />Value NODI <br />Sample <br />= <br />0 9P-N=D;Y=1 <br />01/07 -Weekly <br />VI - VISUAL <br />84066 Oil antl grease visual 1 - EfnueN Gross 0 – <br />Permit Req. <br />Raq Mon INST MAX 9P - N=0;Y=1 <br />0 <br />01130 - Monthly <br />VI - VISUAL <br />Value NODI <br />Submission Note <br />If a parameter row does not contain any values for the Sample nor Effluent <br />Trading, then <br />none of the following fields will be submitted for that row: Units, Number of Excursions, Frequency <br />of Analysis, and Sample Type. <br />Edit Check Errors <br />No mors. <br />Comments <br />Attachments <br />No attachments. <br />Report Last Saved By <br />Colowyo Coal Co LP <br />User: kblunt@tristategt,org <br />I Daterrime: <br />2017-07-11 07:07 (Time Zone: -06:00) <br />Name: Kunis Blunt <br />E -Mail: kblunt@tristategt.org <br />