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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) C00027154 005-A PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD MM /DD,ri MM /DD /YYYY 05/01/2014 05/31 /2014 Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 80467 MAJOR (SUBR JC) ROUTT MINE 1, POND D TO FOIDEL CREEK External Outfall No Discharge NAME /TITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and an attachments were prepared under my direction or TELEPHONE DATE supervision in accordance with a system designed to assure that qualified personnel properly gather and valuate the information submitted. Based on my inquiry of the person or persons who manage the system. or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief true, accurate. and complete I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR vowing violations. AUTHORIZED AGENT TYPED OR PRINTED AREA Code I NUMBER MMIDDfVYYY 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. -'A Fenn rt20 -1 IRS rA1!ngl P'c,Jous gditio is may be used. QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX OFANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pH SAMPLE MEASUREMENT 7.8 6 * ._ 4 00400 1 0 PERMIT * * * * ** * * * * ** * * * * ** 6.5 * * * * ** 9 SU Twice Per GRAB Effluent Gross REQUIREMENT MINIMUM MAXIMUM Month 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 * * * * ** * * * * «* * * * * ** * * * * ** ,iijA Aj Nlj N /i A/'4 PERMIT * * * « ** * * * * ** * * * * ** * * * * ** Req. Mon. Req. Mon. mg /L Weekly GRAB 0053000 See Comments REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE MEASUREMENT * * * * ** * * * * ** * * * * ** * * * * ** ` o L� /� YG'd 0135451 0 PERMIT * * * * ** * * * * ** * * * * ** * * * * ** Req. Mon. .5 mL/L Weekly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE * * * * ** * * * * ** * * * « *« ** * ** MEASUREMENT /v4 /(/+ iill 00545 O 0 PERMIT * * * * ** * * * * ** * * * * ** * * * * ** Req. Mon. Req. Mon. mL/L Weekly GRAB See Comments REQUIREMENT 30DA AVG DAILY MX Iron, total recoverable SAMPLE MEASUREMENT 00980 1 0 PERMIT * * * * ** * * * * ** * * * * ** * * * * ** 1000 Req. Mon. ug /L Twice Per GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Month Flow, in conduit or thru treatment plat SAMPLE MEASUREMENT Q . Q �`� O �Z -� r/1 SM 50050 10 PERMIT 4.55 Req. Mon. MGD * * * * ** * * * * ** * * * * ** * * * * ** Cegtinttom R6@R9R Effluent Gross REQUIREMENT 30DA AVG I DAILY MX I I I V,42 ek ( n NAME /TITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and an attachments were prepared under my direction or TELEPHONE DATE supervision in accordance with a system designed to assure that qualified personnel properly gather and valuate the information submitted. Based on my inquiry of the person or persons who manage the system. or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief true, accurate. and complete I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR vowing violations. AUTHORIZED AGENT TYPED OR PRINTED AREA Code I NUMBER MMIDDfVYYY 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. -'A Fenn rt20 -1 IRS rA1!ngl P'c,Jous gditio is may be used.