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PERMIT-TEE NAME /ADDRESS (Include Facility Name/Location if Different) NAME: Oxbow Mining LLC ADDRESS: PO Box 535 Somerset, CO 81434 -0535 FACILITY: SANBORN CRK & ELK CRK MINES LOCATION: 3737 HIGHWAY 133 SOMERSET, CO 81434 ATTN: Mike Ludlow Exec VP NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) DISCHARGE MONITORING REPORT (DMR) C00000132 017 -A PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD MMIDD/YYYY MM /DD/YYYY 09/01/2014 09/30/2014 Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424 -0535 MINOR GUNIS SURF RUNOFF TO N. FK GUNIS RIV External Outfall No Discharge PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. EX FREQUENCY OF ANALYSIS SAMPLE TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pHSAMPLE ...... ... *.* *.._.* «. *. *. MEASUREMENT 0040010 PERMIT * * * * *' * * * *" *' *' ** 6.5 ' * * * *' 9 SU Monthly INSITU Effluent Gross REQUIREMENT MINIMUM MAXIMUM Solids, total suspended SAMPLE MEASUREMENT 0053010 PERMIT * * * * ** * * *' *" *' * *`* * * * * ** 35 70 mg /L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE MEASUREMENT 00545 1 0 PERMIT * * *' ** ' * * "* " * "* ' * * * "* Req. Mon. Req. Mon. mL/L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total [as Fe] SAMPLE MEASUREMENT 0104510 PERMIT *' * * *" * *` * ** ` * "`* ' " "" 3000 6000 ug /L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease SAMPLE MEASUREMENT 0358210 PERMIT *' * *`" * " * ** « * * * *` " * * ** ' " * * ** 10 mg /L Contingent GRAB Effluent Gross REQUIREMENT INST MAX Flow, in conduit or thru treatment pla t SAMPLE * * * *'* " « * * ** Rt• ; "* « " *`* MEASUREMENT 50050 1 0 PERMIT Req. Mon. Req. Mon. MGD " *' *' * " *" * * *` ** * *' * ** Monthly Y INSTAN Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, total dissolved SAMPLE MEASUREMENT 702951 0 PERMIT * * * * *' * * * * ** ' * " "* * * " *' Req. Mon. Req. Mon. mg /L Quarterly GRAB Effluent Gross REQUIREMENT QRTR AVG DAILY MX NAME /TITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and all attachments were prepared under my direction or TELEPHONE DATE supervision in accordance with a system designed to assure that qualified personnel properly gather and r^ jI // % I Y (([ A Q / valuate the information submitted. Based on my inquiry of the person or persons who manage the l.. l (A system, or those persons directly responsible for gathering the information, the information submitted is, /� ////7777�� //)I r I ` to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are q2 �(i9� 5 significant penalties for submitting false information, including the possibility of fine and imprisonment for SIGNATURE OF PRINCI L EXECUTIVE OFFICER OR knowing violations. AUTHORIZED AGENT AREA Code NUMBER MM /DDIYYYY TYPED OR PRINTED COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIES FOR <= 10YR,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >IOYR,24HR EVERT -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 RPTD EPA Form 3320.1 (Rev.01 /06) Previous editions may be used. 10/17/2013 Page 1