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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPOES) DISCHARGEJAONITORING REPORT (DMR) PERMITTEE NAME/ADDRESS (Include Facility Name/Location if Different) NAME: Oxbow Mining LLC 000000132 013-A ADDRESS: PO Box 535 PERMIT NU DISCHARGE HAR NUMI Somerset, CO 81434 -0535 FACILITY: SANBORN CRK & ELK CRK MINES NITORING PERIOD LOCATION: 3737 HIGHWAY 133 NIM/01 MMID1 / 013 SOMERSET, CO 81434 1oro1/2o1 10/31/2013 AT-TN: Mike Ludlow Exec VP Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424 -0535 MINOR GUNIS RUNOFF TO N FORK GUNNISON R. External Outfail No Discharge ' NAME/TITLE PRINCIPAL EXECUTIVE OFFICER i certify ion in accord n law that mr document and an sure that qualias prepared under recben or /� TELEPHONE DATE srrpervaan under accordance wth a system med designed n to assure that qualified prepared u props r and - /{ /`�'' — ^` aluate the information submitted Based on my inquiry of the penton or persons wino man the i/ {� Q system, or Cate person directly responsible for gathering the information the mformahon Ned a, a � - v to the beat of my knowledge and belief Cue ocwrate, and complete I am aware Cut mare rre5 t OC4 agndaara penalties for submntmp false information, including the posslWdy, of fine and im mein for SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR "owing yawlo s AUTHORIZED AGENT TYPED OR PRINTED AREA cod. MUMMA COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR < =10 ,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 WTIONALE. 30 DAY AVG. IS HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. EPA Form 3320 -1 (Rev.01 /06) Previous editions may be used. 10/17/2013 Page 1 QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pH SAMPLE .. *... ... «.. :..... ....» MEASUREMENT 0040010 PERMIT • ""*•" • " "' "*«'* j 6.5 """' 9 SU Monthly INSiTU Effluent Gross REQUIREMENT MINIMUM MAXIMUM Solids, total suspended SAMPLE "•'**• '** «•' " * « "* ..., *• MEASUREMENT 0053010 PERMIT • *«• «• '»... ' «•'.* ' «'•ri 35 70 mg /L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE •' *•" •• " *' " *'*« *«*""" MEASUREMENT 005451 0 PERMIT •`* "' **••" « *'••' ' " "` Req. Mon. Req. Mon. mUL 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 plat SAMPLE « «.... ..*... «`..« •....• MEASUREMENT 500501 0 PERMIT Req. Mon. Req. Mon. MGD •"" " " ""' "**" "*"` Monthly INSTAN Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease visual SAMPLE '• " "» .,.. ** " * * *.. » * "«. • »••• MEASUREMENT 8406610 PERMIT "* * * *' Req. Mon. Y =1;N =0 '*"" " "" '•'*•' • *'*'• Monthly VISUAL Effluent Gross REQUIREMENT INST MAX ' NAME/TITLE PRINCIPAL EXECUTIVE OFFICER i certify ion in accord n law that mr document and an sure that qualias prepared under recben or /� TELEPHONE DATE srrpervaan under accordance wth a system med designed n to assure that qualified prepared u props r and - /{ /`�'' — ^` aluate the information submitted Based on my inquiry of the penton or persons wino man the i/ {� Q system, or Cate person directly responsible for gathering the information the mformahon Ned a, a � - v to the beat of my knowledge and belief Cue ocwrate, and complete I am aware Cut mare rre5 t OC4 agndaara penalties for submntmp false information, including the posslWdy, of fine and im mein for SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR "owing yawlo s AUTHORIZED AGENT TYPED OR PRINTED AREA cod. MUMMA COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR < =10 ,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 WTIONALE. 30 DAY AVG. IS HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. EPA Form 3320 -1 (Rev.01 /06) Previous editions may be used. 10/17/2013 Page 1