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PERMITTEE 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 010-A PERMIT N M F1313CHARGENUMBER MONITORING PERIOD MM /DD/YYYY MM /DD/YYYY 07/01/2014 07/31/2014 Form Approved OMB No 2040-0004 DMR Mailing ZIP CODE: 814240535 MINOR GUNIS SEDIMENT POND TO SANBORN CREEK External Outfall No Discharge NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I oe" under penelty of law mat this dowment and all attachments were prepared under my direcban er TELEPHONE DATE stripmrsm the n accordance bm with a system designed on my to assure of t that rrson i r personnel properly gamer and A �( % , ablate the information submmed Barad on my inquiry of me person or persons who manage the ,_',/ G ' /T— `f 0 system, or those persons directly responsible for garnering the information, me mformaaon submitted s, rV' ,,riff AA to the best of my knowledge and belief, true, accurate, and complete I am aware that mere are 9%a -'929 —S8V 6 ;gyp �/ wgmticant to —lbes for submrmng false information, mcludmg me posorbildy of anti and rmpnsrmment for SIGNATURE OF P INCIPAL EXECUTIVE OFFICER OR / V W y n—ng wotabons AUTHORIZED AGENT AREw Code NUMBER MID TYPED OR PRINTED COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & 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 Forth 3320 -1 (Rev.01 /06) Previous editions may be used. 1011712013 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 004001 0 PERMIT * » "' '•'•» » ~ *• 65 ""•' 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. 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 Oiland 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 840661 0 PERMIT " " *" Req Mon. Y =1;N =0 *• "" • "'•• "»» '~~' Monthly VISUAL Effluent Gross REQUIREMENT INST MAX NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I oe" under penelty of law mat this dowment and all attachments were prepared under my direcban er TELEPHONE DATE stripmrsm the n accordance bm with a system designed on my to assure of t that rrson i r personnel properly gamer and A �( % , ablate the information submmed Barad on my inquiry of me person or persons who manage the ,_',/ G ' /T— `f 0 system, or those persons directly responsible for garnering the information, me mformaaon submitted s, rV' ,,riff AA to the best of my knowledge and belief, true, accurate, and complete I am aware that mere are 9%a -'929 —S8V 6 ;gyp �/ wgmticant to —lbes for submrmng false information, mcludmg me posorbildy of anti and rmpnsrmment for SIGNATURE OF P INCIPAL EXECUTIVE OFFICER OR / V W y n—ng wotabons AUTHORIZED AGENT AREw Code NUMBER MID TYPED OR PRINTED COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & 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 Forth 3320 -1 (Rev.01 /06) Previous editions may be used. 1011712013 Page 1