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PERMITTEE NAME/ADDRESS (include Facility Name/Location it 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 PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD MM/DDIYYYY �MMIDDJYYYY 111101/2015 1 V3112015 Form Approved OMB No. 2040-0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS SURF RUNOFF TO N. FK GUNIS RIV External Outfall No Dischargel'71 NAME/TITLE PRINCIPAL EXECUTIVE OFFICER Iw*-d"rpanaeyotawwtth.dowmmtandsnaaxnmemawerepnparwunder mysrecoonor aupenb W m a dente %1Ma system deapned to assure Nat yueliMers d personnel property gaw, and swab the adwmeeal submmed. Based on my au><rrry of tlIe person or peRom>eIo manage NO system, or Nose persons Erectly r.epamfble 1W gag—mg the mfor r~. N< 00MOM W Mmlmd m. '.Na best of my k—A—Ir and Opae1, true, —M., am comphp I am swan IMI Nan are aW'ftlnt panalbes for subnit" telae mfomaaorl, md"ng Ne PMlbeay Of arta and Impftor, nt for n0M"1pV101e0o° QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER SIGNATURrLbF PRINCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UMTg pHSAMPLE .>.... .>.... .>.... ...>.. MEASUREMENT 0040010 PERMIT '..... ••^'• '••••' 6.5 '«"'• 9 SU Monthly INSITU Effluent Gross REQUIREMENT MINIMUM MAXIMUM Solids, total suspended SAMPLE •'•••' •'"'•• `••••` •+"••• MEASUREMENT 0053010 Effluent Gross PERMIT REQUIREMENT ••'••' •••••' •••^• •>•«•• 35 30DA AVG 70 DAILY MX mg/L Monthly GRAB Solids, settleable SAMPLE ••"••' •••••• •••••• •••••• MEASUREMENT 0054510 Effluent Gross PERMIT REQUIREMENT •'•••• •••^' ••'^' '••"•• Req. Mon. 30DA AVG Req. Mon. DAILY MX mUL Monthly GRAB Iron, total (as Fe] SAMPLE «••••" «"•••- •••••• ••••"• MEASUREMENT 0104510 Effluent Gross PERMIT REQUIREMENT •>••"" -•••-• •^•*' >*--*" 3000 30DA AVG 6000 DAILY MX ug/L Monthly GRAB Oil and grease SAMPLE '•>••> •••«•• ""••-• *>^•• »>«>•> MEASUREMENT 0358210 Effluent Gross PERMIT REQUIREMENT '""•* •••••' *•"^" •••••• "'^' 10 INST MAX mg/L Contingent GRAB 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 NAME/TITLE PRINCIPAL EXECUTIVE OFFICER Iw*-d"rpanaeyotawwtth.dowmmtandsnaaxnmemawerepnparwunder mysrecoonor aupenb W m a dente %1Ma system deapned to assure Nat yueliMers d personnel property gaw, and swab the adwmeeal submmed. Based on my au><rrry of tlIe person or peRom>eIo manage NO system, or Nose persons Erectly r.epamfble 1W gag—mg the mfor r~. N< 00MOM W Mmlmd m. '.Na best of my k—A—Ir and Opae1, true, —M., am comphp I am swan IMI Nan are aW'ftlnt panalbes for subnit" telae mfomaaorl, md"ng Ne PMlbeay Of arta and Impftor, nt for n0M"1pV101e0o° (! r L . TELEPHONE DATE /i , •1,e C t-1.4 a Fre r e1 e h - ' q76 4z Q- `034 fZ ad Lol SIGNATURrLbF PRINCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT TYPED OR PRINTED AREA Code NUMBER rAwowtm 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 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.01106) Previous editions may be used. 10/1712013 Page 1