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PERMITTEE NAME/ADDRESS (Include Facility Name/Locadon 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: Mike Ludlow Exec VP <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />000000132 010 -A <br />PERMIT NUM DIS HAR E NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />02/01/2015 02/28/2015 <br />Form Approved <br />OMB No. 2040 -0004 <br />DMR Mailing ZIP CODE: 81424 -0535 <br />MINOR <br />GUNIS <br />SEDIMENT POND TO SANBORN CREEK <br />External Outfall <br />No Discharge <br />PARAMETER <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 />SAMPLE <br />MEASUREMENT <br />0040010 <br />PERMIT <br />" * **** <br />*'**** <br />* ***** <br />6.5 <br />*`**'" <br />9 <br />SU <br />Monthly <br />INSITU <br />Effluent Gross <br />REQUIREMENT <br />MINIMUM <br />MAXIMUM <br />Solids, total suspended <br />SAMPLE <br />MEASUREMENT <br />0053010 <br />PERMIT <br />* *"""* <br />* " **'* <br />**`*** <br />"*` *" <br />35 <br />70 <br />mg /L <br />Monthly <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Solids, settleable <br />SAMPLE <br />MEASUREMENT <br />005451 0 <br />PERMIT <br />•****" <br />* **'*' <br />* ""' <br />"* "* <br />Req. Mon. <br />Req. Mon. <br />mUL <br />Monthly <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Iron, total [as Fe] <br />SAMPLE <br />MEASUREMENT <br />0104510 <br />PERMIT <br />*****' <br />"***`" <br />*" *" <br />* **"'" <br />3500 <br />7000 <br />ug /L <br />Monthly <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Oil and grease <br />SAMPLE <br />MEASUREMENT <br />035821 0 <br />PERMIT <br />" ***** <br />**"' <br />' *"" <br />"' " <br />" "* <br />10 <br />mg /L <br />Contingent <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />INST MAX <br />Flow, in conduit or thru treatment plat <br />SAMPLE <br />MEASUREMENT <br />500501 0 <br />PERMIT <br />Req. Mon. <br />Req. Mon. <br />MGD <br />*****" <br />"'"'** <br />""' "" <br />**'"** <br />Monthly <br />INSTAN <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Oil and grease visual <br />SAMPLE <br />MEASUREMENT <br />840661 0 <br />PERMIT <br />* ****` <br />Req. Mon. <br />Y =1;N =0 <br />**'"*" <br />"*'*"* <br />**'**' <br />*"** "' <br />Monthly <br />VISUAL <br />Effluent Gross <br />REQUIREMENT <br />INST MAX <br />NAME /TITLE PRINCIPAL EXECUTIVE OFFICER tCeWbunderpenalty oflawthatthis documentandall attachmentswerepreparedundermydkectionor TELEPHONE DATE <br />supervision In accordance with a system designed to assure that cimli ied personnel properly gather and `w ' _ I/( <br />( <br />evaluate the information submitted. Based on my kquiry of the person or persons who manage the sM I{`i <br />O (.• <br />system, or those persons directly responsible for gathering the information, the information submitted is, Q aa A^� �+Q`'1 <br />l r % to the best of my knowledge and belief, true, accurate, and complete. I am aware that there ere I v — / % — J O v& 43 Q <br />\V signitkaM penalties for submittVralseinformotimIncludirgmeposs ibftoflineandlmpdeonmentfor SIGNATURE OF PRINCIPAL EXECUTIVEOFFICEROR <br />nowlgviolations. AUTHORIZED AGENT AREACada NUMBER MMIDI)NYYY <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 <br />EVENT -SEE I.A.1,PP 4-5, AND I.A.2, P. 5 FOR RQMNTS.TDS MONITORING -SEE PART VI.A.2.G OF RATIONALE. 30 DAY AVG. IS HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. <br />EPA Form 3320.1 (Rev.01106) Previous editions may be used. 10/17/2013 Page 1 <br />