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PERMITTEE NAME/ADDRESS (Include Faclhty Name/Locahon if Different) <br />NAME: Oxbow Mining LLC <br />ADDRESS: PO Box 535 <br />Somerset, CO 81434-0535 <br />FACILITY: SANBORN CRK & ELK CRK MINES <br />LOCATION: 3737 HIGHWAY 133 <br />SOMERSET, CO 81434 <br />ATTN Mike Ludlow Exec VP <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />000000132 I 012-A <br />PERMIT NUMBER 1 1 DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />07/01/2015 07/31/2015 <br />Form Approved <br />OMB No 2040-0004 <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />SEDIMENT POND TO ELK CREEK <br />External Outfall <br />No Discharge <br />NAMEITITLE PRINCIPAL EXECUTIVE OFFICER <br />1 certify under penalty of law that this document and all attachments were prepared under my direction or <br />QUANTITY OR LOADING <br />QUALITY OR CONCENTRATION <br />NO. <br />FREQUENCY <br />SAMPLE <br />PARAMETER <br />EX <br />OF ANALYSIS <br />TYPE <br />VALUE <br />VALUE <br />UNITS <br />VALUE <br />VALUE <br />VALUE <br />UNITS <br />pH <br />SAMPLE <br />"*.... <br />.*...* <br />.**... <br />lD <br />..*.** <br />MEASUREMENT <br />0040010 <br />PERMIT <br />***"*" <br />**"*' <br />'****` <br />6.5 <br />""`* <br />9 <br />SU <br />Monthly <br />INSITU <br />Effluent Gross <br />REQUIREMENT <br />MINIMUM <br />MAXIMUM <br />Solids, total suspended <br />SAMPLE <br />MEASUREMENT <br />0053010 <br />PERMIT <br />*"*** <br />**`*'* <br />`*'*** <br />**`*** <br />35 <br />70 <br />mg/L <br />Monthly <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Solids, settleable <br />SAMPLE <br />MEASUREMENT <br />005451 0 <br />PERMIT <br />'*`*** <br />'***** <br />*****` <br />*"*** <br />Req. Mon. <br />Req. Mon. <br />mL/L <br />Monthly <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Iron, total [as Fe] <br />SAMPLE <br />MEASUREMENT <br />0104510 <br />PERMIT <br />*`**** <br />`***'* <br />****** <br />**`«** <br />3000 <br />6000 <br />ug/L <br />Monthly <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Oil and grease <br />SAMPLE <br />MEASUREMENT <br />0358210 <br />PERMIT <br />****** <br />****** <br />*`**** <br />****** <br />'***** <br />10 <br />mg/L <br />Contingent <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />INST MAX <br />Flow, in conduit or thru treatment plat <br />SAMPLE <br />MEASUREMENT <br />50050 1 0 <br />PERMIT <br />Req. Mon. <br />Req. Mon. <br />MGD <br />**`**' <br />***`*` <br />**`*** <br />****** <br />Monthly <br />INSTAN <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Oil and grease visual <br />SAMPLE <br />****** <br />«***** <br />****** <br />«***** <br />****** <br />MEASUREMENT <br />840661 0 <br />PERMIT <br />`*"** <br />Req. Mon. <br />Y=1;N=0 <br />"`*** <br />*`**'* <br />*`**** <br />****** <br />Monthly <br />VISUAL <br />Effluent Gross <br />REQUIREMENT <br />INST MAX <br />NAMEITITLE PRINCIPAL EXECUTIVE OFFICER <br />1 certify under penalty of law that this document and all attachments were prepared under my direction or <br />I <br />TELEPHONE <br />DATE <br />supervision in accordance with a system designed to assure that qualified personnel properly gather and <br />valuate the information submitted Based on my inquiry of the person or persons who manage the <br />system or those persons directly responsible for gathering the information, the information submitted ,s <br />,_" i �' 7 t <br />'�1' (t1 `� '1 ` t �/ 7 • r <br />lathe best of my knowledge and belief true accurate, and complete I am aware that there are <br />IGNATURE OF P CIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />r,> , <br />significant penalties for submitting false information including the possibility of fine and imprisonment for <br />knowing violations <br />IX <br />TYPED OR PRINTED <br />AREA cwe NUMBER <br />lD <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR -1 PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR <br />EVENT -SEE I.A.1,PP 4-5, AND I.A.2, P. 5 FOR RQMNTS.TDS MONITORING -SEE PART VI.A2.G OF RATIONALE. 30 DAY AVG. IS HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. <br />EPA Form 3320-1 (Rev.01/06) Previous editions may be used. 10/17/2013 Page 1 <br />