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PERMITTEENAME /ADDRESS (Include Facility Name/Location if Different) NAME: Twentymile Coal Company ADDRESS: 29515 Routt CR 27 EX EX Oak Creek, CO 80467 FACILITY: MINES 1 &2 AND ECKMAN PARK MINE LOCATION: 29515 RCR #27 VALUE OAK CREEK, CO 80467 ATTN• JERRY NETTLETON, ENV SUPERVISR NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) DISCHARGE MONITORING REPORT (DMR) C00027154 002 -A PERMIT NUMBER I I DISCHARGE NUMBER MONITORING PERIOD MM /DD /YYYY MM /DD/YYYY FROM 04/01/2011 TO 04/30/201_$ Form Approved OMB No 2040 -0004 DMR Mailing ZIP CODE: 80467 MAJOR (SUER JC) ROUTT MINE 1, POND T TO FOIDEL CREEK External Outfal I No Discharge PARAMETER «mt, a•r�rn,I „11,,,, ftl n „d,--t -d.dl n,, nnrnn„ rrl,r�p— d,.d,rn„ d,r"t,,,� „r p r,um,m.,«,nden.,vtha,.,t ill de e„ rea,,nyuahl,edpen , n eli,nped, _,mer,,d e,alu.,te the ,nionnatum ,lib—ti,d Be,ed on on mymn of the 1- or pen, n, aho the QUANTITY OR LOADING QUALITY OR CONCENTRATION EX EX FREQUENCY OF ANALYSIS SAMPLE TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS p ill” ,t„r,,, nma„ Ld, , t,• net,,, ,n lna,npmep,,,,,h,ht, ,t rn nd,n,pr,.,,n„ tlO °' SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT AREA Code NUMBER MM /DD /YYYY pH SAMPLE MEASUREMENT -7 Q 004001 0 PERMIT * " *'* 65 * * ** 9 SU Effluent Gross REQUIREMENT MINIMUM MAXIMUM Weekly GRAB Solids, total suspended SAMPLE .,... ��jo Z +/% MEASUREMENT T I Gl Ll 0053010 PERMIT * * * * ** 35 70 mg /L Effluent Gross REQUIREMENT 30DA AVG DAILY MX Weekly GRAB Solids, total suspended A �1 A MEASSAMPLE UREMENT /1/ /U N +� IV 0053000 PERMIT * * * * ** " * * ** * * * * ** Req Mon Req Mon mg /L See Comments REQUIREMENT 30DA AVG DAILY MX Weekly GRAB Solids, settleable SAMPLE * * ** ....— U — L) , 1 C �7 MEASUREMENT / 005451 0 PERMIT * * * * ** * * * * ** Req Mon 5 mL/L Effluent Gross REQUIREMENT 30DA AVG DAILY MX Weekly GRAB Solids, settleable SAMPLE MEASUREMENT /v ty N :4 0054500 PERMIT * * * * ** * * ** " '* Req Mon Req. Mon mL /L See Comments REQUIREMENT 30DA AVG DAILY MX Weekly GRAB Iron, total (as Fe) SAMPLE «,.< r ! % ! S r' MEASUREMENT -S 3 .�� .�.. L / % 0.104510 Effluent Gross PERMIT REQUIREMENT *' ** 3500 30DA AVG 7000 DAILY MX ug /L Weekly GRAB Iron, total (as Fe) SAMPLE A v MEASUREMENT /1 , r 0104500 See Comments PERMIT REQUIREMENT * * * *t " *` ** Req Mon 30DA AVG Req Mon DAILY MX ug /L Weekly GRAB NAME /TITLE PRINCIPAL EXECUTIVE OFFICER «mt, a•r�rn,I „11,,,, ftl n „d,--t -d.dl n,, nnrnn„ rrl,r�p— d,.d,rn„ d,r"t,,,� „r p r,um,m.,«,nden.,vtha,.,t ill de e„ rea,,nyuahl,edpen , n eli,nped, _,mer,,d e,alu.,te the ,nionnatum ,lib—ti,d Be,ed on on mymn of the 1- or pen, n, aho the r TELEPHONE DATE �x�m or tho,e Ikrxnu �Lrcctk re,pon >,ble for p a-ing the udom,.,non the mh nm�uun ub.—d„ to the 1— "I,.” kno„ledue end t,ehet True eceur.ne -d eompl- I im e,,.,re iha, then .,n „-r—ni � 1 7 l[ �C r p ill” ,t„r,,, nma„ Ld, , t,• net,,, ,n lna,npmep,,,,,h,ht, ,t rn nd,n,pr,.,,n„ tlO °' SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT AREA Code NUMBER MM /DD /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 CLAIMED ALTERNATE LIMITS FOR IRON &SETTLEABLE SOLIDS (MLOC = =O) APPLY ONLY IF < =10YR,24HR PRECIP EVENT CLAIMED OIL & GREASE -:;EE I C 19,PAGE 16 EPA Form 3320 -1 (Rev.01 /06) Previous editions may be used. 03/31/2011 Page 1