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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 18,2 AND ECKMAN PARK MINE LOCATION: 29515 RrR #27 OAK CREEK, CO 80467 ATTN: Patrick Sollars, GM NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) DISCHARGE MONITORING REPORT (DMR) C00027154 004-A PERMIT NUM- R DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY MM/DD/YYYY 03/01/201'47 03/31/201 ti Form Approved OMB No. 2040.0004 OMR Mailing ZIP CODE: 80467 MAJOR (SUBR JC) ROUTT MINE 1, POND C TO FOIDEL CREEK External Outfall No Discharge rt71 NAMEITITLE PRINCIPAL EXECUTIVE OFFICER 1""'yundarpemayotbwthatlhmdocumemandaaatachmemswereprepemdundermydaectnnor supery — b accordance with a system desgned to assure that qustifed pens I pmpedy gather and Wats the tMmmalbn submdted eased on my mgwrya tti. pM er persons who manage the system, ar those persons deadly rmpm+stble for gathemg the mfo t", the er,omtaim submdted a, W the best of my knowledge and bekd, hue, accurate, and mmphte I am aware that there are9.70 eand-pentfo, symmf—lm, nJud,nathe possbttydf1mrrsonm aew,g 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 pH SAMPLE — — — ...... *..... ...... MEASUREMENT 004001 0 PERMIT *"*"" ••+"++ '•++•+ 6.5 +`•*•• 9 SU Weekly GRAB Effluent Gross REQUIREMENT MINIMUM MAXIMUM Solids, total suspended SAMPLE •**'*' """ "*"` `•"'• MEASUREMENT 0053010 PERMIT """ "`**** """' "•"' 35 70 mg/L Weekly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, total suspended SAMPLE """ '**`** •""' *`**** MEASUREMENT 0053000 PERMIT *****` *`**" """ *""* Req. Mon. Req. Mon. mg/L Weekly GRAB See Comments REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE MEASUREMENT 005451 0 PERMIT """ *'•*** """ "'*`* Req. Mon. .5 mUL Weekly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE "+"' ••a'a' MEASUREMENT 0054500 PERMIT •**'•* **•`•* '*`**` ****" Req. Mon. Req. Mon. mL/L Weekly GRAB See Comments REQUIREMENT 30DA AVG DAILY MX - Iron, total [as Fe] SAMPLE MEASUREMENT 0104510 PERMIT '••"• ***'*" """ "**** 3500 7000 ug/L Weekly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total [as Fel SAMPLE "'••' "`*`* """ `•*"' MEASUREMENT 0104500 PERMIT ""`*** **"" "'*'* """ Req. Mon. Req. Mon. ug/L Weekly GRAB See Comments REQUIREMENT 30DA AVG DAILY MX NAMEITITLE PRINCIPAL EXECUTIVE OFFICER 1""'yundarpemayotbwthatlhmdocumemandaaatachmemswereprepemdundermydaectnnor supery — b accordance with a system desgned to assure that qustifed pens I pmpedy gather and Wats the tMmmalbn submdted eased on my mgwrya tti. pM er persons who manage the system, ar those persons deadly rmpm+stble for gathemg the mfo t", the er,omtaim submdted a, W the best of my knowledge and bekd, hue, accurate, and mmphte I am aware that there are9.70 eand-pentfo, symmf—lm, nJud,nathe possbttydf1mrrsonm aew,g r,_� TELEPHONE DATE V ( �70 Z'7 SCJ U� ZS�f'7 r/ SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT AREA Cade I NUMBER MMIDD/YYYY 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 CLAIMES. 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.01106) Previous editions may be used. 08/26/2013 Page 1