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PARAMETER <br />I .snits unas, Mneun of lax the: th.> J rnt and a ana.in„sm tt srs rr.rn•sd xndu ,m d,nsuon or <br />, >t „ <br />d, >,.n,c•,.a„ ;a <br />t ,. o.thr n._ <br />s`IK,rl,u I n,nassoman«xm ,d, >„- n,l„om „ tsatherana <br />r ■ :h 1 tab y 1 I h u :t . <br />tlw persons d,restly r.>o vols tor SaNmne :hs Information, • i tha mtumtxnun>b a is <br />h >: of ms knowledge an.. .f In, at,n,_at.. d tt,n,r, tt. l am ax.r that there are .,En, .ent <br />r.nal:�s. for >nhn,nnn e. •,, <br />g false 0.. „n n,. 0,, ,.,..t I t to Ian, en. ,r. ,,, ,nm.n. :,.IstloA „•E <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 />9 <br />MAXIMUM <br />SU <br />Monthly <br />INSITU <br />Solids total suspended <br />0053010 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />.... - . <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 />005451 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />.a..., <br />PERMIT <br />REQUIREMENT <br />Req Mon <br />30DA AVG <br />Req Mon <br />DAILY MX <br />mIJL <br />Monthly <br />GRAB <br />Iron, total (as Fe) <br />010451 0 <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 />035821 <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 />" "" <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 />NAME/TITLE PRINCIPAL EXECUTIVE OFFICER <br />I .snits unas, Mneun of lax the: th.> J rnt and a ana.in„sm tt srs rr.rn•sd xndu ,m d,nsuon or <br />, >t „ <br />d, >,.n,c•,.a„ ;a <br />t ,. o.thr n._ <br />s`IK,rl,u I n,nassoman«xm ,d, >„- n,l„om „ tsatherana <br />r ■ :h 1 tab y 1 I h u :t . <br />tlw persons d,restly r.>o vols tor SaNmne :hs Information, • i tha mtumtxnun>b a is <br />h >: of ms knowledge an.. .f In, at,n,_at.. d tt,n,r, tt. l am ax.r that there are .,En, .ent <br />r.nal:�s. for >nhn,nnn e. •,, <br />g false 0.. „n n,. 0,, ,.,..t I t to Ian, en. ,r. ,,, ,nm.n. :,.IstloA „•E <br />�{ ` <br />1 J t <br />TELEPHONE <br />DATE <br />J '' v"' = '`� { t , "may f " ) . t <br />` �.y� v <br />+ f 0 . <br />Z/C E "> (/ . ( 1 . e s I e i- c <br />y 7o - % ay r <br />os/ .2.12w 2w a_ <br />GNATURE OF PRINCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />AREA Cod. I NUMBER <br />/ <br />MM/9D/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 />C00000132 <br />PERMIT NUMBER <br />013 -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 />RUNOFF TO N FORK GUNNISON R <br />External Outfall <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 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 />