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PARAMETER <br />I .arr.t, under penal') of lam that tht. dnu and all an n <br />.0 m da n«.atna, wtna achnnno o.re pperad under ma dnecnon nr <br />p t t n t , tan dei v n aa, ute that qualified pmwnnel properly game and <br />I t m t tul n d U d v y ry t m p. p. h g m <br />,yo. Pona n, or o per., dtre,t1v responatblc (or gathomg tha rntenneuon,,ht ut(orman u on subnuned . <br />to tn<h,i nt m, Anov. kdg<and belief tnt<ecawm<and.un , pl<t<l axar<mat rn<re ar<.tFntfi<em <br />,. i we, tor,:6n,ming lake imnnt nnetn tn.m an dtng th. po,olo n: tine d t x n, tpnnnne for tnoo In IGNATURE <br />QUANTITY OR LOADING <br />QUALITY OR CONCENTRATION <br />NO. <br />EX <br />FREQUENCY <br />OF ANALYSIS <br />SAMPLE <br />TYPE <br />VALUE <br />VALUE <br />UNITS <br />VALUE <br />VALUE <br />VALUE <br />UNITS <br />pH <br />00400 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />PERMIT <br />REQUIREMENT <br />6 5 <br />MINIMUM <br />"aa" <br />9 <br />MAXIMUM <br />SU <br />Monthly <br />INSITU <br />Solids, total suspended <br />0053010 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />PERMIT <br />REQUIREMENT <br />35 <br />30DA AVG <br />70 <br />DAILY MX <br />mg/L <br />Monthly <br />GRAB <br />Solids, settleable <br />00545 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />„aa.. <br />PERMIT <br />REQUIREMENT <br />Req. Mon. <br />30DA AVG <br />Req. Mon. <br />DAILY MX <br />mUL <br />Monthly <br />GRAB <br />Iron, total (as Fe) <br />0104510 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />PERMIT <br />REQUIREMENT <br />3000 <br />30DA AVG <br />6000 <br />DAILY MX <br />ug /L <br />Monthly <br />GRAB <br />Oil and grease <br />0358210 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />PERMIT <br />REQUIREMENT <br />10 <br />INST MAX <br />mg/L <br />Contingent <br />GRAB <br />Flow, in conduit or thru treatment plant <br />50050 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />PERMIT <br />REQUIREMENT <br />Req. Mon. <br />30DA AVG <br />Req. Mon. <br />DAILY MX <br />Mgal/d <br />Monthly <br />INSTAN <br />Oil and grease visual <br />84066 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />PERMIT <br />REQUIREMENT <br />Req Mon. <br />INST MAX <br />Y =1,N =0 <br />Monthly <br />VISUAL <br />A PRINC PAL EXECUTIVE OFFICER <br />I .arr.t, under penal') of lam that tht. dnu and all an n <br />.0 m da n«.atna, wtna achnnno o.re pperad under ma dnecnon nr <br />p t t n t , tan dei v n aa, ute that qualified pmwnnel properly game and <br />I t m t tul n d U d v y ry t m p. p. h g m <br />,yo. Pona n, or o per., dtre,t1v responatblc (or gathomg tha rntenneuon,,ht ut(orman u on subnuned . <br />to tn<h,i nt m, Anov. kdg<and belief tnt<ecawm<and.un , pl<t<l axar<mat rn<re ar<.tFntfi<em <br />,. i we, tor,:6n,ming lake imnnt nnetn tn.m an dtng th. po,olo n: tine d t x n, tpnnnne for tnoo In IGNATURE <br />14..,-4, / ' <br />da„.„4 1 "( v <br />�� (` <br />,( <br />TELEPHONE <br />DATE <br />r • a• � <br />' , ��� 1 <br />L,..., CQC I ` V, / _�1" <br />C —�r/� <br />CI -' 4 `S <br />( <br />cz/ /lit /Z <br />'` j / <br />OF PRINCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />AREA Code NUMBER <br />if <br />MMIOD/YYYY <br />TYPED O' PRINTED <br />PERMITTEE NAME /ADDRESS (Include Facility Name /Location if Different) <br />NAME: Oxbow Mining LLC <br />ADDRESS: PO Box 535 <br />Somerset, CO 81434 -0535 <br />FACILITY: SANBORN CRK & ELK CRK MINES <br />LOCATION: 3737 HIGHWAY 133 <br />SOMERSET, CO 81434 <br />ATTN James T. Cooper, EVP <br />EPA Form 3320 - 1 (Rev.01106) Previous editions may be used. <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />FROM <br />C000001 32 <br />PERMIT NUMBER <br />012 -A <br />DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM /DD/YYYY <br />01/01/2012 <br />MM /DD/YYYY <br />01/31/2012 <br />TO <br />DMR Mailing ZIP CODE: 81424 -0535 <br />MINOR <br />GUNIS <br />SEDIMENT POND TO ELK CREEK <br />External Outfall <br />Form Approved <br />OMB No. 2040-0004 <br />No Discharge <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR <= 10YR,24HR PRECIP EVENT,SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVENT -SEE I A.1,PP 4 -5, AND I.A.2, P. 5 <br />FOR ROMNTS.TDS MONITORING -SEE PART VI A 2 G OF RATIONALE. 30 DAY AVG. IS HIGHEST MONTHLY AVG DURING PERIOD REPRTD. <br />11/0912011 Page 1 <br />