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PERMITTEE NAME/ADDRESS (include Faalrty Name/Locabon if i> ferent) 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) 000000132 007 -A PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD MWDD/WYY MWDD/YYYY 10/0112013 1 1 10/31/2013 Form Approved OMB No. 2040-0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS SEDIMENT POND TO HUBBARD CREEK External Outfall No Discharge NAMEITITLE PRINCIPAL EXECUTIVE OFFICER Ice" under penalty of Iawthat the document and alt attachment were prepared under my directionor /� TELEPHONE DATE supervson m accordance *o a system desgned to assure that quakfred personnel property, gather and / / • \ / I �� akrate the information submdled Based on my ngrury of the person or persons who manage the me U lx' j system, or those persons deeWly responsible for gathering the informaton, the mformaoon sub dad a, e C . - '? t to the best of my knowledge and belief, true accurate, and complete I am aw a that there arc Q �O �} O (J agnifiont perishes for submitting fate mformation, including the possibiNf/ of fns and enpnounment for SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR ( /f�/ V 7 zz TYPED OR PRINTED rove g V=10ne AUTHORIZED AGENT AREA Cods NUMBER MINVIDWYYYY 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,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. EPA Form 3320 -1 (RevA1 106) 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. Non. Req. Mon. mUL Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total [as Fe] SAMPLE '• ~~ *** * *` « * * « ** ~• *~ MEASUREMENT 0104510 PERMIT • ~•`• * *•••* " ~ *• *' *`~ 3500 7000 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 300A AVG DAILY MX Oil and grease visual SAMPLE MEASUREMENT 840661 0 PERMIT ~ ~~ Req. Mon. Y =1;N =0 *` *` ** " "" ~ "~ ~'*" Monthly VISUAL Effluent Gross REQUIREMENT INST MAX NAMEITITLE PRINCIPAL EXECUTIVE OFFICER Ice" under penalty of Iawthat the document and alt attachment were prepared under my directionor /� TELEPHONE DATE supervson m accordance *o a system desgned to assure that quakfred personnel property, gather and / / • \ / I �� akrate the information submdled Based on my ngrury of the person or persons who manage the me U lx' j system, or those persons deeWly responsible for gathering the informaton, the mformaoon sub dad a, e C . - '? t to the best of my knowledge and belief, true accurate, and complete I am aw a that there arc Q �O �} O (J agnifiont perishes for submitting fate mformation, including the possibiNf/ of fns and enpnounment for SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR ( /f�/ V 7 zz TYPED OR PRINTED rove g V=10ne AUTHORIZED AGENT AREA Cods NUMBER MINVIDWYYYY 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,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. EPA Form 3320 -1 (RevA1 106) Previous editions may be used. 10/17/2013 Page 1