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DMR Copy of Record <br />Permit <br />Permit #: C00045161 Permittee: Colowyo Coal Co LP Facility: COLOWYO MINE <br />Major: No Permittee Address: PO Box 33695 Facility Location: 5731 SOUTH HIGHWAY 13 <br />Denver, CO 80233-0695 MEEKER, CO 81641 <br />Permitted Feature: 010 Discharge: 010-A <br />External Outfall E. TAYLOR POND TO TAYLOR CREEK <br />Report Dates & Status <br />Monitoring Period: From 01/01/17 to 03/31/17 I DMR Due Date: 04/28/17 I Status: 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 TO REPORTED MEASUREMENTS - SEE I.A.2, PG. 3 FOR BURDEN OF PROOFREQUIREMENTS. OIL & GREASE - I.B.1.13, <br />PG. 5. QRTRLY SAMPLING INSTRUCTIONS - I.C.11, PG. 5. <br />Principal Executive Officer <br />First Name: Barbara I 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 />Value NODI <br />8.17 = 8.23 <br />>= 6.5 MINIMUM <= 9 MAXIMUM <br />8 = 8 <br /><= 35 30DA AVG <= 70 DAILY MX <br />< 0.2 < 0.2 <br />Req Mon 30DA AVG Req Mon DAILY MX <br />0.14 = 0.14 <br /><= 1 30DA AVG Req Mon DAILY MX <br />12 - SU 01/07 - Weekly IS - INSITU <br />12 -SU 0 01/30 - Monthly IS - INSITU <br />19 - mg/L <br />19 - mg/L 0 <br />25 - mL/L <br />25 - mL/L 0 <br />19 - mg/L <br />19 - mg/L 0 <br /><= 10 INST MAX 19 - mg/L <br />9 - Conditional Monitoring - Not Required This Period <br />0.082 = 0.207 03 - MGD <br />Req Mon 30DA AVG Req Mon DAILY MX 03 - MGD 0 <br />3500 = 3500 19 - mg/L <br />Req Mon 30DA AVG Req Mon DAILY MX 19 - mg/L 0 <br />= 0 9P - N=0;Y=1 <br />Req Mon INST MAX 9P - N=0;Y=1 0 <br />01/30 - Monthly <br />01/30 - Monthly <br />01/30 - Monthly <br />01/30 - Monthly <br />01/30 - Monthly <br />01/30 - Monthly <br />77/77 - Contingent <br />GR -GRAB <br />GR -GRAB <br />GR -GRAB <br />GR -GRAB <br />GR -GRAB <br />GR - GRAB <br />GR - GRAB <br />01/07 - Weekly IN - INSTAN <br />01/30 - Monthly IN - INSTAN <br />03/90 - Three Every Quarter GR - GRAB <br />01/90 - Quarterly GR - GRAB <br />01/07 - Weekly VI - VISUAL <br />01/30 - Monthly VI - VISUAL <br />Submission Note <br />If a parameter row does not contain any values for the Sample nor Effluent Trading, then none of the following fields will be submitted for that row: Units, Number of Excursions, Frequency of Analysis, and Sample Type. <br />Edit Check Errors <br />No errors. <br />Comments <br />Based on the enclosed information on precipitation events preceding the discharge on 2/27/2017, we request determination that the alternate limitations for "less than or equal to the 10 -year, 24-hour precipitation event' apply to the discharge at this location, per Parts I.A.1 and I.A.2 of the permit. The <br />facility experienced precipitation between 0.31 and 0.38 inches (measurable precipitation) for the 48 hours prior, as recorded on the enclosed weather report. No mine waters are discharged to this pond, resulting in stormwater runoff loading only. Therefore, the TSS and Total Iron effluent limits do not <br />apply to the discharge on 2/27/2017, rather the Settleable Solids limit of 0.5 mL/L should apply. The 2/27/2017 sample from this location contained TSS of 98 mg/L and Total Iron of 1.16 mg/L. <br />Attachments <br />Name <br />1 stQtrAltLimitsSupport2017.pdf <br />Report Last Saved By <br />Colowyo Coal Co LP <br />User: kblunt@tristategt.org <br />Name: Kurtis Blunt <br />E -Mail: kblunt@tristategt.org <br />Date/Time: <br />Type <br />pdf <br />2017-04-13 16:28 (Time Zone: -06:00) <br />20498 <br />Size <br />ple <br />00400 pH <br />1 - Effluent Gross <br />0 <br />Req. <br />�Va�lue <br />NODI <br />Sample <br />00530 Solids, total suspended <br />1 - Effluent Gross <br />0 <br />Permit Req. <br />Value NODI <br />Sample <br />00545 Solids, settleable <br />1 - Effluent Gross <br />0 <br />Permit Req. <br />Value NODI <br />Sample <br />00980 Iron, total recoverable <br />1 - Effluent Gross <br />0 <br />Permit Req. <br />Value NODI <br />Sample <br />03582 Oil and grease <br />1 - Effluent Gross <br />0 <br />Permit Req. <br />Value NODI <br />I Sample = <br />50050 Flow, in conduit or thru treatment <br />plant 1 - Effluent Gross <br />0 <br />Permit Req. <br />Value NODI <br />Sample <br />70295 Solids, total dissolved <br />1 - Effluent Gross <br />0 <br />*Permit84066 <br />Oil and grease visual <br />1 - Effluent Gross <br />0 <br />Value NODI <br />8.17 = 8.23 <br />>= 6.5 MINIMUM <= 9 MAXIMUM <br />8 = 8 <br /><= 35 30DA AVG <= 70 DAILY MX <br />< 0.2 < 0.2 <br />Req Mon 30DA AVG Req Mon DAILY MX <br />0.14 = 0.14 <br /><= 1 30DA AVG Req Mon DAILY MX <br />12 - SU 01/07 - Weekly IS - INSITU <br />12 -SU 0 01/30 - Monthly IS - INSITU <br />19 - mg/L <br />19 - mg/L 0 <br />25 - mL/L <br />25 - mL/L 0 <br />19 - mg/L <br />19 - mg/L 0 <br /><= 10 INST MAX 19 - mg/L <br />9 - Conditional Monitoring - Not Required This Period <br />0.082 = 0.207 03 - MGD <br />Req Mon 30DA AVG Req Mon DAILY MX 03 - MGD 0 <br />3500 = 3500 19 - mg/L <br />Req Mon 30DA AVG Req Mon DAILY MX 19 - mg/L 0 <br />= 0 9P - N=0;Y=1 <br />Req Mon INST MAX 9P - N=0;Y=1 0 <br />01/30 - Monthly <br />01/30 - Monthly <br />01/30 - Monthly <br />01/30 - Monthly <br />01/30 - Monthly <br />01/30 - Monthly <br />77/77 - Contingent <br />GR -GRAB <br />GR -GRAB <br />GR -GRAB <br />GR -GRAB <br />GR -GRAB <br />GR - GRAB <br />GR - GRAB <br />01/07 - Weekly IN - INSTAN <br />01/30 - Monthly IN - INSTAN <br />03/90 - Three Every Quarter GR - GRAB <br />01/90 - Quarterly GR - GRAB <br />01/07 - Weekly VI - VISUAL <br />01/30 - Monthly VI - VISUAL <br />Submission Note <br />If a parameter row does not contain any values for the Sample nor Effluent Trading, then none of the following fields will be submitted for that row: Units, Number of Excursions, Frequency of Analysis, and Sample Type. <br />Edit Check Errors <br />No errors. <br />Comments <br />Based on the enclosed information on precipitation events preceding the discharge on 2/27/2017, we request determination that the alternate limitations for "less than or equal to the 10 -year, 24-hour precipitation event' apply to the discharge at this location, per Parts I.A.1 and I.A.2 of the permit. The <br />facility experienced precipitation between 0.31 and 0.38 inches (measurable precipitation) for the 48 hours prior, as recorded on the enclosed weather report. No mine waters are discharged to this pond, resulting in stormwater runoff loading only. Therefore, the TSS and Total Iron effluent limits do not <br />apply to the discharge on 2/27/2017, rather the Settleable Solids limit of 0.5 mL/L should apply. The 2/27/2017 sample from this location contained TSS of 98 mg/L and Total Iron of 1.16 mg/L. <br />Attachments <br />Name <br />1 stQtrAltLimitsSupport2017.pdf <br />Report Last Saved By <br />Colowyo Coal Co LP <br />User: kblunt@tristategt.org <br />Name: Kurtis Blunt <br />E -Mail: kblunt@tristategt.org <br />Date/Time: <br />Type <br />pdf <br />2017-04-13 16:28 (Time Zone: -06:00) <br />20498 <br />Size <br />