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DMR Copy of Record Permit Permit 11: C00045161 Permittee: Colowyo Coal Cc LP Faclllty: COLOWYO MINE Major: No Permittee Address: PO Box 33695 Facility Location: 5731 SOUTH HIGHWAY 13 Denver, CO 80233-0695 MEEKER, CO 81641 Permitted Feature: 010 Discharge: 010-A External Outtall E. TAYLOR POND TO TAYLOR CREEK Report Dates 8 Status Monitoring Period: From 01/01/17 to 01131/17 I DMR Due Date: 04128/17 I Status: NetDMR Validated Considerations for Form Completion SETTLEABLE SOLIDS LIMIT APPLIES ONLY IF < 10YR,24HR PRECIP EVENT IS CLAIMED. IF CLAIM APPROVED BY WQCD,TSS 8 IRON LIMITS WILL NOT BE APPLIED TO REPORTED MEASUREMENTS - SEE I.A.2, PG. 3 FOR BURDEN OF PROOF REQUIREMENTS. OIL 8 GREASE - I.B.1.B, PG. 5. QRTRLY SAMPLING INSTRUCTIONS - LC.11, PG, 5. Principal Executive Officer First Name: Barbara Title: SVP, Policy and Compliance, CCO I Telephone: 303-452-6111 Last Name: Walz No Data Indicator (NODI) Form NODI: — Parameter Monitoring Location Season a Para,. NODI quantity or Loading Quality or Concentration a of Ea. Frequency of Analyaia Sample Type Code Name Quallfierl Valuet Qualifier Value Units Qualifier Value 0uelifier2 Value Qualifier Value Units Sample = 817 = 8.23 12 -SU 01107 -Weekly IS - INSITU 00400pH 1-ElfluantGmss 0 — Permit Req. >= 65 MINIMUM <= 9MAXIMUM 12 -SU 0 0 30 -Monthly IS - INSITU Value NODI Sample = B = 8 19-ngA Ot/30-Monthly GR - GRAB 00530 Solids, toilet suspended 1-EMuent Gross 0 — Permit Req. <= 3530DA AVG <= 70 DAILY MX 19-mgILO 01/30 -Monthly GR - GRAB Value NODI Sample < 02 < 02 25-mL/L 01/30 -Monthly GRGRAB 00545 Solids. settleable 1 - Eeluent Gross 0 — Permit Req. Req Mon 30DA AVG Req Mon DAILY MX 25- ml_ L 0 01130 - Monthly GR:GRAB GRAB Value NODI Sample = 0.14 = 0.14 19-mg/L 01/30 -Monthly GR -GRAB 009801ron, total recoverable 1 -Effluent Gross 0 — Permit Req. <= 1 30DA AVG Req Mon DAILY MX 19- mg/L 0 01130 - Monthly GR - GRAB Value NODI Sample 03582 Oil and grease 1 - Effluent Gross 0 — Permit Req. <= 101NST MAX 19 - nV L 77r77- Contingent OR - GRAB Value NO01 9 - Conditional Monilonrg - Not Required This Period Sam ple = 0082 = D207 03 -MGD 01/07 -Weakly IN - INSTAN ow 50050 Fl, in cornua or in, lreaonent dant 1 - Effluent Gross 0 — Permit Raq. Req Mon 30DA AVG Req Mon DAILY MX 03- MGD 0 01/30- Monthly IN - INSTAN Value NODI Sample = 3500 = 3500 19 -mgt 03/90- Three Every Quaner GR - GRAB 70295 Solids. total dissolved 1 - Elauent Gross 0 -- Permit Raq. R"Mon 30DA AVG Req Mon DAILY MX 19- mglL 0 01/90- Quadeny GR - GRAB Value NODI Sample 0 9P-N=0,Y=1 01107 -Weekly VI - VISUAL 84066011 anal grease visual t - EBluent Gross 0 -- Permit Req. Rap Mon INST MAX 9P - N=0:Y=1 0 01/30 - Monthly VI - VISUAL Value NODI Submission Note 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. Edit Check Errors No mors. Comments 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 /0 -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 facility experienced precipitation between 0.31 and 0.38 inches (measurable precipitation) for the 48 hours poor, 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 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. Attachments Name Type Size 1sI0trAI LimdxSuppod2017.pdf pdt 20498 Report Last Saved By Colowyo Coal Co LP User kblunt@tnstategt.org I Date(Time 2017-04-13 16:28 (Time Zone: -06:00) Name: Kurds Blunt E -Mail: kblunt@thstategt.org