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PARAMETER <br />I ..run ands p.nalry of lax that d.u...new and all arta.hments ss ere. preparal antic ma dnc•non or <br />> opera• n,„ nma“, ordan. with a. a. temdcmgnedtua >.ure that yuahredpersonnel roperlvgameand <br />• I I b 1 I a1 B d y 4 rY f th pc pe h y th <br />> ystem or those p.a.> dtre.tiv respomtble for ga[h.nng ll. mfotmauon, the Inform... animated Is <br />to the he,. .t ma knowledt. Mid tine a..., and complete I am aa.are that then arc sigmfi.an <br />;.ri h ie, n mla. mho Including I. p . MIL) of rim and ttnpr�......m for know ti <br />QUANTITY OR LOADING <br />QUALITY OR CONCENTRATION <br />NO. <br />FREQUENCY <br />ANALYSIS <br />SAM <br />OF <br />PEE <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 />" "" <br />6 5 <br />MINIMUM <br />• " "' <br />9 <br />MAXIMUM <br />S U <br />Monthly <br />INSITU <br />Solids, total suspended <br />0053010 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />PERMIT <br />REQUIREMENT <br />" "" <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 />...a.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 />010451 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />PERMIT <br />REQUIREMENT <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 />a..... <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 />30DA AVG <br />Req. Mon. <br />DAILY MX <br />Mgal/d <br />• "••' <br />Monthly <br />INSTAN <br />Solids total dissolved <br />70295 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />PERMIT <br />REQUIREMENT <br />Req. Mon. <br />300A AVG <br />Req. Mon. <br />DAILY MX <br />mg/L <br />Quarterly <br />GRAB <br />NAME/TITLE PRINCIPAL EXECUTIVE OFFICER <br />r <br />I ..run ands p.nalry of lax that d.u...new and all arta.hments ss ere. preparal antic ma dnc•non or <br />> opera• n,„ nma“, ordan. with a. a. temdcmgnedtua >.ure that yuahredpersonnel roperlvgameand <br />• I I b 1 I a1 B d y 4 rY f th pc pe h y th <br />> ystem or those p.a.> dtre.tiv respomtble for ga[h.nng ll. mfotmauon, the Inform... animated Is <br />to the he,. .t ma knowledt. Mid tine a..., and complete I am aa.are that then arc sigmfi.an <br />;.ri h ie, n mla. mho Including I. p . MIL) of rim and ttnpr�......m for know ti <br />G <br />TELEPHONE <br />DATE <br />7..L� <br />U(,( _ <br />� r ec . � y e5 f de <br />rh' -9J• ate y — ✓ O <br />! <br />a y l 2_/ 1-0 iz - <br />I GNATURE OF PRINCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />AREA cod. I NUMBER <br />M ( / / <br />M OD/YYYY <br />TYPED OR PRINTED <br />PERMITTEE NAME/ADDRESS (Include FacflityName/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 /061 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 />009 -A <br />DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM /DD/YYYY <br />03/01/2012 <br />MM /DD/YYYY <br />03/31/2012 <br />TO <br />GUNIS <br />SURF RUNOFF TO N FK GUNIS RIVR <br />External Outfall <br />Form Approved <br />OMB No. 2040 -0004 <br />DMR Mailing ZIP CODE: 81424 -0535 <br />MINOR <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. IF HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. <br />11/09/2011 Page 1 <br />