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PARAMETER <br />u t x na <br />I LerIA under p.nalty of la Ina: thie d�u.unient and ell a,hr,ent. t, pr epa,ul under ni• d,ncnom of <br />�upervi,inn in aueraancc with e a.le designed to a,.onc that q.uhhnl [kr.onnd prupal, gah.r and <br />I I ti I hn It d 13 ' v q ry I t}. I . p h y• h /^ <br />edge an acawete end wm <br />to the he.t ul t th knowl> d and bel el to ee for gachrnn he pla t l t nr• aware hat there arc menif �( <br />p i m..'” —h-- I,dw nnnro, ,m nmdm ne L,,.�r r.,dllucand m I <br />QUANTITY OR LOADING <br />QUALITY OR CONCENTRATION <br />NO. <br />FREQUENCY <br />OF ANALYSIS <br />SAMPLE <br />VALUE <br />VALUE <br />UNITS <br />VALUE <br />VALUE <br />VALUE <br />UNITS <br />pH <br />004001 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />PERMIT <br />REQUIREMENT <br />--. <br />6.5 <br />MINIMUM <br />"""' <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 />300A 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 />....,a <br />PERMIT <br />REQUIREMENT <br />" "" <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 />""" <br />3500 <br />30DA AVG <br />7000 <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 />•.. „• <br />PERMIT <br />REQUIREMENT <br />Req. Mon. <br />300A 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 />• .. <br />PERMIT <br />REQUIREMENT <br />Req Mon. <br />INST MAX <br />Y =1,N =0 <br />Monthly <br />VISUAL <br />(VAM EMTLE PRINCIPAL EXECUTIVE OFF <br />u t x na <br />I LerIA under p.nalty of la Ina: thie d�u.unient and ell a,hr,ent. t, pr epa,ul under ni• d,ncnom of <br />�upervi,inn in aueraancc with e a.le designed to a,.onc that q.uhhnl [kr.onnd prupal, gah.r and <br />I I ti I hn It d 13 ' v q ry I t}. I . p h y• h /^ <br />edge an acawete end wm <br />to the he.t ul t th knowl> d and bel el to ee for gachrnn he pla t l t nr• aware hat there arc menif �( <br />p i m..'” —h-- I,dw nnnro, ,m nmdm ne L,,.�r r.,dllucand m I <br />n6 _ _ / I <br />`4� �� <br />4.1 'tom /^ <br />t 1 ' ` <br />■ <br />TELEPHONE <br />DATE <br />J � <br />`. rr�} � y.''����.. �' //�� <br />a -' Vj �� ` �� <br />. pC , V. ('e l l? <br />? ?O <br />O 5 /O i z. <br />IGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />r_s7 <br />AREA caw. NUMBER <br />/ //( <br />tut O/YYYY <br />TYPED OR 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: <br />LOCATION: <br />SANBORN CRK & ELK CRK MINES <br />3737 HIGHWAY 133 <br />SOMERSET, CO 81434 <br />ATTN James T Cooper, EVP <br />EPA Form 3320 -1 (Rev.01 /06) Previous editions may be used. <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />FROM <br />000000132 <br />PERMIT NUMBER <br />007 - A <br />DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM /DD/YYYY <br />04/01/2012 <br />MM /DD/YYYY <br />04/30/2012 <br />TO <br />Form Approved <br />OMB No. 2040-0004 <br />DMR Mailing ZIP CODE: 81424 - 0535 <br />MINOR <br />GUNIS <br />SEDIMENT POND TO HUBBARD CREEK <br />External Outfall <br />No Discharge 1%1 <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 RQMNTS.TDS MONITORING-SEE PART VI.A.2.G OF RATIONALE. 30 DAY AVG. IS HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. <br />11/09/2011 Page 1 <br />