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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 NN I IUNAL t ULLU 1 AN I Ulbt.NAKUt tLIMINA I IUN b Y b I LM (NYUtb) DISCHARGE MONITORING REPORT (DMR) 000027154 002-A PERM[ U B RI DISCHARGE NUMB R MONITORING PERIOD MM/DDNYYY MM/DD/YYYY 12/01/201* 12/31/2016 rorm Hpproveo OMB No. 2040-0004 DMR Mailing ZIP CODE: 80467 MAJOR (SUER JC) ROUTT MINE 1, POND T TO FOIDEL CREEK External Outfall No Discharge PARAMETER ,anor nacheeprapaperedundermydxm under ro"' that this document rdenemmw 1 'y n' superv"san in scoardance with a system desgned to assure that qualified personnel properly gather and atbn submitted eed on my inquiry of me pmaon or pmsors who manage the uste ms mlormas system, or those persars directly responsible for gathering the infomnabon. the information submitted is. gri�icaant beatpenes.. for ubmitfi gand bfN Mmm ludinipthe nocutate, and �asdi tyof rme aMI am iniams that hmpn ars far rnw,rg violations QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. EX FREQUENCY OF ANALYSIS SAMPLE TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pHSAMPLE MEASUREMENT ...... ...... ...... ...... 0040010 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 0054510 PERMIT •"•*•" '••+`+ '*••" •••••• Req. Mon. .5 mUL Weekly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE 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 Fe] SAMPLE MEASUREMENT 0104500 PERMIT "`•" """ """ ""'" Req. Mon. Req. Mon. ug/L Weekly GRAB See Comments REQUIREMENT 30DA AVG DAILY MX NAMEITITLE PRINCIPAL EXECUTIVE OFFICER ,anor nacheeprapaperedundermydxm under ro"' that this document rdenemmw 1 'y n' superv"san in scoardance with a system desgned to assure that qualified personnel properly gather and atbn submitted eed on my inquiry of me pmaon or pmsors who manage the uste ms mlormas system, or those persars directly responsible for gathering the infomnabon. the information submitted is. gri�icaant beatpenes.. for ubmitfi gand bfN Mmm ludinipthe nocutate, and �asdi tyof rme aMI am iniams that hmpn ars far rnw,rg violations A-,11al- ^ /' l� TELEPHONE DATE C 7� 275 SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT AREA Code NUMBER MM/DDM'YY 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.01106) Previous editions may be used. 08/26/2013 Page 1