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PERMITTEE NAME/ADDRESS (Include Facility Name/Location if Different) NAME: Twentymile Coal LLC ADDRESS: 29515 Routt CR 27 Oak Creek, CO 80467 FACILITY: MINES 1&2 AND ECKMAN PARK MINE LOCATION: 29515 RCR #27 OAK CREEK, CO 80467 - ATTN: Patrick Sollars, GM NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) DISCHARGE MONITORING REPORT (DMR) C00027154006 -A PERMIT NUMB!d DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY SAMPLE MMIDD/YYYY 03/01/2017 EX 03/31/201:7 Form Approved OMB No. 2040-0004 DMR Mailing ZIP CODE: 80467 MAJOR (SUBR JC) ROUTT MINE 1, POND E TO FOIDEL CREEK External Outfall No Discharge NAMErfITLEPRINCIPAL EXECUTIVE OFFICER henry`neer penalty of law that tlnsdocummoland all am-trment.amm,Prepared under myd—cbotor .up.-- M --dance wilh a system cl—red to assure that gwidfed pe*sonnal properly gather and Nate the information submitted Based on my inquiry of the pe—nn or persons who manage the system, or name persons directly msponsicte for gathering the information, the mformotax, submitted u to the bast of my knaNedge and babe, We. accurate, and mmpkte I am swam that there are argndtmm peranas for suemntarg fol- adormed—,mcwmrg the posmtehly, of re and imprisonment f« ' tans QUANTITY OR LOADING QUALITY OR CONCENTRATION NO, FREQUENCY SAMPLE PARAMETER SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pHSAMPLE MEASUREMENT ...... .«.... ..*... ...... 0040010 Effluent Gross PERMIT REQUIREMENT .«++«« «.«««+ +++*+a 6.5 MINIMUM ++**++ g MAXIMUM SU Weekly GRAB Solids, total suspended SAMPLE MEASUREMENT "*"** '*"" ""'* "•"' S Sit O G QG C%� 0053010 PERMIT •*"» `*`**` """ """ 35 70 mg/L Weekly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, total suspended SAMPLE{ MEASUREMENT W141_ N/4- IV� /V/I-�H 0053000 PERMIT "•"` """* *'»`* """ Req. Mon. Req. Mon. mg/L Weekly GRAB See Comments REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE MEASUREMENT """ »"'• `*"" """ f Z 4� 005451 0 -- Effluent Gross PERMIT REQUIREMENT "'»` ""•' """ `»"' Req. Mon. 30DA AVG .5 DAILY MX mUL Weekly GRAB Solids, settleable SAMPLE MEASUREMENT '•~'• **'*" """ """ /V/ AIA- /Vii} /4 0054500 PERMIT ••'••` ""•' ""*" "»" Req. Mon. Req. Mon. mUL Weekly GRAB See Comments REQUIREMENT 30DA AVG DAILY MX Iron, total [as Fe] SAMPLE MEASUREMENT *"`•' "*"* "•"* ins- /%© G' 0 5y<<6 0104510 PERMIT •""` "•"` `**"` `*"" 3500 7000 ug[L Weekly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total [as Fe] SAMPLE MEASUREMENT '""" "*"' `*"" "`"`IVA �(� ' Nfi /`�� �/ ,( r"4l•- 0104500 See Comments PERMIT REQUIREMENT "***•• """ »`*" """ Req. Mon. IG I Req. Mon. DAILY MX ug/L Weekly GRAB NAMErfITLEPRINCIPAL EXECUTIVE OFFICER henry`neer penalty of law that tlnsdocummoland all am-trment.amm,Prepared under myd—cbotor .up.-- M --dance wilh a system cl—red to assure that gwidfed pe*sonnal properly gather and Nate the information submitted Based on my inquiry of the pe—nn or persons who manage the system, or name persons directly msponsicte for gathering the information, the mformotax, submitted u to the bast of my knaNedge and babe, We. accurate, and mmpkte I am swam that there are argndtmm peranas for suemntarg fol- adormed—,mcwmrg the posmtehly, of re and imprisonment f« ' tans 7--"'"`•'�� �, G r �i ✓'7 �. I� TELEPHONE DATE 1 , I7�If-��io /} r y'� �* 7Gt 'u� 7 t �.>!J�s 1/�J 71L3-1 / SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT AREA Coda INUMBER MMIDDIYYYY TYPED OR PRINTED COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) ALTERNATE LIMITS FOR TSS (MLOC=O) APPLY IF 10YR/24HR PRECIP EVENT CLAIMED. ALTERNATE LIMITS FOR IRON &SETTLEABLE SOLIDS (MLOC=O) APPLY ONLY IF—10YR,24HR PRECIP. EVENT CLAIMED. OIL & GREASE - SEE I.C.19,PAGE 16. EPA Form 3320-1 (Rev.01/06) Previous editions may be used. 08126/2013 Page