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PERMITTEE NAME/ADDRESS (Include facility Nume/Location if NAME: Oxbow Mining LLC ADDRESS: PO Box 535 Somerset, CO 81434- 0535 FACILITY: S.kNBORN CRK & ELK CRI: MINES LOCATION: 3737 HIGHWAY 133 SOMERSET, CO 81434 ATTN: Mike Ludlow, Pres NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) DISCHARGE MONITORING REPORT (DMR) 000000132 007- A PERMIT NUMBER I DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY MM/DD/YYYY 12/01/2015 12/31/2015 Form Approved OMB No. 2040- 0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS SEDIMENT POND TO HUBBARD CREEK External Outfall No Discharge® NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I cendl under pe -11, of law that ti—duavmenl and ail allachment• were preparrd under m� QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE »TrS pH SAMPLE tr**««A r.AA««« *«««AA A«Art«A code NUMBER M/DD/YYYY MEASUREMENT 0040010 PERMIT ****«* **«**« *****« 6.5 ««**«« 9 SU Monthly INSITU Effluent Gross REQUIREMENT MININLUM MAXIMUM Solids, total suspended SAMPLE *««•*« *««* ****** ****** MEASUREMENT 0053010 Effluent Gross PERMIT REQUIREMENT TM«*««* *-**** ****«* ««***« 35 30DA AVG 70 DAILY NIX mg/L Monthly GRAB Solids, settleable SAMPLE *«^*«« «««*«« **•'•**« *««*** MEASUREMENT 003451 0 PERNUT ****TM* «tr««Atr A**AAA ««**«A Req. Mon. Req. Mon. mL/L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY NIX iron, total [as Fel SAMPLE **«*** «****« ««**«* ****** MEASUREMENT 0104510 PERNIIT «**«** «*TM«** «««««« *^**** 3500 7000 ug/L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY NIX Oil and grease SAMPLE *••TMAAA AAA*trA «**AAA AAA«AA AAAAAA MEASUREMENT 0358210 PERMIT ****** TM**^+* «««*** «****« «««««« 10 mg/L Contingent GRAB Effluent Gross REQUIREMENT INST MAX Flow, in conduit or thru SAMPLE **TM«*TM ^««*TM* ****** ***•*«« treatment plant MEASUREMENT 500501 0 PERMIT Req. Mon. Req. Mon. MGD AAAAAA Artrt*hrt «AAAAA ****** Monthly INSTAN Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, total dissolved SAMPLE MEASUREMENT 70295 1 0 Effluent Gross PERMIT REQUIREMENT «**««* ****** «****^ ****** Req. Mon. 30DA .AVG Req. Mon DAILY NIX mg/L Quarterly GRAB NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I cendl under pe -11, of law that ti—duavmenl and ail allachment• were preparrd under m� TELEPHONE DATE direa'tion or supem�l aion of xcordmm with a stemesi dgn d to aecum that qualified 11,, jj ] MR� �N b W fres net peonery er xathand .+acuate the information —b—Tied. award on on ingu,r, of Ihr DIr un ur panwtna w ho n ansae the tywem, nr rltu a prrwm dnMl� rtpmnible fur xalhrsry! , 4 70 • 92 944-?+ D 1/a 61249 P r fa L M im the Information, the inlormanon submined is, to the best of m} lnmdedge and belief. true. (st at nj kn.dl a and behe SIGNA OF PRINCrPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT and ewm Dh•le. I awns• tial there ore then in h.r tape nlorual wn..elwb -A,u.w bnn 'he potnday of Ilm•and imp--enl for koo-or. ll TYPED OR PRINTED�aFw code NUMBER M/DD/YYYY COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR <= I OYR,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 FOR RQMNTS.TDS MONITORING- SEE PART VI.A.2.G OF RATIONALE 30 DAY" AVG. IS HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. FBA Form 3320- 1 (Rev.01/06) Previous editions may be used. 01/05/2016 Page 1