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PERMITTEE NAME/ADDRESS (Include Facility Name/Locabon if D rIferent) 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 016-A PERMIT N I GE NUMBER MONITORING PERIOD MM /DD/YYYY MM/DDNYYY 07/01/2014 07/31/2014 Form Approved OMB No 2040 -0004 DMR Mailing ZIP CODE: 81424 -0535 MINOR GUNIS SURFACE RUNOFF TO ELK CREEK External Outfall No Discharge 5 NAMEMTLE PRINCIPAL EXECUTIVE OFFICER I Lp * ender penally .1 1— that this d—ment and as abachments were prepared under my direction o TELEPHONE DATE super —in m accordance reth a system designed to assure that qualified on persrrel properly gaiter and up aluate the mformabon submitted Based on my inquiry of the person o nu r peme vAto manage the \ "f system, a those persons directly responsible fur gathemg the mlormatwn, the information submitted a, t/� • l �Z t to the best of my knovAedge and belief, true, ac urale, and complete I am aware that there are (• �/• significant penalbes for submit" false mlormaborn, including the possibility of fine and imprnammem for SIGNATURE OF PR IPAL EXECUTIVE OFFICER OR TYPED OR PRINTED ng nolauons AUTHORIZED AGENT AREw Coda NUMBER MMlDD/YYW COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS 8 TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR < =10YR,24 HR PRECIP EVENT;SETTLEABLE SOLIDS LIMITS MAY BE WAIVED FOR >10YR,24HR EVENT -SEE I.A.1, PP 4 -5, AND I.A.2., P 5 FOR ROMNTS. 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. 1011712013 Page t 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 • *••~ ' ~ ~• •'~'• 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 0054510 PERMIT ~ ~ *• »~» • ~•~ ' ~'» Req. Mon. Req Mon. mUL Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total [as Fel 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 NAMEMTLE PRINCIPAL EXECUTIVE OFFICER I Lp * ender penally .1 1— that this d—ment and as abachments were prepared under my direction o TELEPHONE DATE super —in m accordance reth a system designed to assure that qualified on persrrel properly gaiter and up aluate the mformabon submitted Based on my inquiry of the person o nu r peme vAto manage the \ "f system, a those persons directly responsible fur gathemg the mlormatwn, the information submitted a, t/� • l �Z t to the best of my knovAedge and belief, true, ac urale, and complete I am aware that there are (• �/• significant penalbes for submit" false mlormaborn, including the possibility of fine and imprnammem for SIGNATURE OF PR IPAL EXECUTIVE OFFICER OR TYPED OR PRINTED ng nolauons AUTHORIZED AGENT AREw Coda NUMBER MMlDD/YYW COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS 8 TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR < =10YR,24 HR PRECIP EVENT;SETTLEABLE SOLIDS LIMITS MAY BE WAIVED FOR >10YR,24HR EVENT -SEE I.A.1, PP 4 -5, AND I.A.2., P 5 FOR ROMNTS. 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. 1011712013 Page t