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PERMITTEE NAME/ADDRESS (Indude Faaky Name/Locahon 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 ERM NUMBER DISCHARGE NUMBER MONITORING PERIOD MWDD/YYYY MWDD/YYYY 10/01/2013 10/31/2013 Form Approved OMB No. 2040-0004 DMR Mailing LP CODE: 81424 -0535 MINOR GUNIS SURF RUNOFF TO N. FK GUNIS RIV External Outfail No Discharge NAMEITITLE PRINCIPAL EXECUTIVE OFFICER 1 oerhfy under penalty of law that the document and 0-M attachments were prepared under my direction supervewn in accordance with a system despised to assure that quald ed personnel properly gather ai the information submNed Based an my setuiry of the person or pereons who manage the t system, or nose persons directly responsible for gathersg the information the information submeted 1 op to the best of my kraw/edge and belef, true accurate, and complete 1 am aware that there are C , t'e 5t plQVt agnlltwnt penaMros for submitting false information, mchrYng the possaalay of rise and mpreoismerd I rowing v.hibore G- kl*, 4A WAW/- E OF PRI PAL EXECUTIVE OFFICER OR AUTHORIZED AGENT TELEPHONE I DATE �j ?�- 9ul_.5ga6 ARFACr.le f NUMBER 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 >10YR,24HR EVERT -SEE I.A.1,PP 4-5, AND IA.2., P 5 FOR RQMNTS. TDS MONITORING - SEE PART VIA.2.G OF RATIONALE. 30 DAY AVG IS HIGHEST MONTHLY AVG. DURING PERIOD RPTD EPA Form 3320 -1 (Rev.01106) 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 • ~' *' * ~ *~ ` * ~~ 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 005451 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 plat SAMPLE ~ *'•• •»~~ "~ *• *•• ~' MEASUREMENT 500501 0 Effluent Gross PERMIT REQUIREMENT Req. Mon. 30DA AVG Req. Mon. DAILY MX MGD ~'•" '• "~ •~~' '•*"' Monthly INSTAN Oil and grease visual SAMPLE •'• "" * *~~ ~ * ~• »'~• ' ~•~ MEASUREMENT 8406610 Effluent Gross PERMIT REQUIREMENT '~•~ Req. Mon. INST MAX Y =1;N =0 ~' '* * *' ~' »•' ~••~ Monthly VISUAL NAMEITITLE PRINCIPAL EXECUTIVE OFFICER 1 oerhfy under penalty of law that the document and 0-M attachments were prepared under my direction supervewn in accordance with a system despised to assure that quald ed personnel properly gather ai the information submNed Based an my setuiry of the person or pereons who manage the t system, or nose persons directly responsible for gathersg the information the information submeted 1 op to the best of my kraw/edge and belef, true accurate, and complete 1 am aware that there are C , t'e 5t plQVt agnlltwnt penaMros for submitting false information, mchrYng the possaalay of rise and mpreoismerd I rowing v.hibore G- kl*, 4A WAW/- E OF PRI PAL EXECUTIVE OFFICER OR AUTHORIZED AGENT TELEPHONE I DATE �j ?�- 9ul_.5ga6 ARFACr.le f NUMBER 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 >10YR,24HR EVERT -SEE I.A.1,PP 4-5, AND IA.2., P 5 FOR RQMNTS. TDS MONITORING - SEE PART VIA.2.G OF RATIONALE. 30 DAY AVG IS HIGHEST MONTHLY AVG. DURING PERIOD RPTD EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 10/17/2013 Page 1