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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM <br />(NPDES) Forth Approved <br />DISCHARGE MONITORING REPORT (DMR) OMB No. 20460004 <br />PERMITTEE NAME/ADDRESS (Include Facility Name/Location if Different) <br />NAME: Oxbow Mining LLC <br />000000132 <br />ADDRESS: PO Box 535 019 A <br />DMR Mailing ZIP CODE: 81424-0535 <br />Somerset, CO 81424-0535 PERMIT NUMBER DISCHARGE NUMBER MINOR <br />FACILITY: SANBORN CRK & ELK CRK MINES GUNIS <br />LOCATION: 3737 HIGHWAY 133 MONITORING PERIOD SURFACE RUNOFF TO HUBBARD CRK <br />SOMERSET, CO 81434 MM/DDIYYYY MM/DD/YYYY External Outfall <br />ATTN: James T. Cooper, EVP FROM 03/01/2010 TO 03/31/2010 No Discharge <br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE <br /> E( OF ANALYSIS TYPE <br />VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE „ <br />'? <br />MEASUREMENT <br />"«" """ •-•--• <br />0040010 PERMIT "•"` <br />«„•• •« •• <br />Effluent Gross REQUIREMENT <br />MINIMUM »«» 9 SU <br /> <br />Solids, total suspended SAMPLE <br />•« MAXIMUM Monthly INSITU <br />MEASUREMENT <br />""" '«"' ""•• <br />0053010 PERMIT ,. 35 <br />Effluent Gross REQUIREMENT *»«• f ••• 70 mg/L <br />30DA AVG <br />Solids <br />settleable MX 7D AV Monthly GRAB <br />, <br />SAMPLE <br />•'?•» <br />MEASUREMENT <br />""" """ '• "• <br />0054510 PERMIT <br />Req. Mon. <br />Effluent Gross REQUIREMENT ••„•• •« •• •?•„ <br />eq. M <br />R <br />mUL <br />O <br />DA AVG <br />Iron <br />total (as Fe) DAILY <br />MX Monthly GRAB <br />, <br />SAMPLE <br />MEASUREMENT <br />0104510 PERMIT ",,,, <br /> <br />Effluent Gross REQUIREMENT ••'«• ».,.. <br />••*'•• <br />DA A <br /> <br />L <br /> <br />Ug/L <br />30 <br />VG <br />Oil and grease DAI <br />Y MX Monthly GRAB <br />SAMPLE <br />MEASUREMENT <br />0358210 PERMIT '•,,•• «.«• «..» .«.,. „..« <br />Effluent Gross <br />10 <br />REQUIREMENT fn9/L <br /> <br />Flow, in conduit or thru treatment plant SAMPLE INST MAX Contingent GRAB <br />MEASUREMENT "'•« •••••• ««» ....« <br />50050 1 0 PERMIT Req. Mon, Req. Mon. Mgal/d •-•••• •••«. <br />Effluent Gross ««« .,, „ <br />REQUIREMENT 30DA AVG DAILY MX <br /> <br />Solids, total dissolved SAMPLE Monthly INSTAN <br />MEASUREMENT <br />- <br />702951 0 PERMIT """ <br />Effluent Gross REQUIREMENT •'••• •„••• •„•„ <br /> <br />DA <br />MMX <br /> <br />mg/L <br />0DA AVG L Quarterly GRAB <br />NAMEMTLE PRINCIPAL EXECUTIVE OFFICER <br />upervsston m uxordancc with a ayatem desigrrcd m assure Nu qualified personnel Proary <br />11 <br />amer and <br />i <br />t <br />g <br />1T'Y?l evaluate the in( i.m sub <br />- <br />l Based uu mY inquiry of the prrmn or persons who truvage the <br />sy:km, m these P.- dvemly responsible for gatlaring tb< idbrmation <br />d <br />i <br />f <br />i TELEPHONE DATE <br />u <br />n <br />ormat <br />, <br />on submimd is, <br />/u m me Mt a(my ---g- M belief true, suuune, and compk¢. I am aware thin there art sign f m Qom/ <br />V <br />, `6rion r r zubmilling false nt nwu , 1-g: he possihiliry of f e aW mPriswmem for km w ng 1 (b q Z9 5 1 Z L <br />P?' <br />n <br /> <br /> <br /> <br />4 ! tl _ ?' O <br />T <br />TYPED OR PRINTED <br />SIGNA E OF PRINCIPAL EXECUTIVE O FFICER OR <br />AUTHORIZED AGENT <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) ?Rewcoe. NUMBER MWoo/Yl'YY <br />TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR <br />-10,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR.24HR EVENT-SEE IA.1, <br />RQMNTS.TDS MONITORING-SEE PART VLA.2.G OF RATIONALE. 30 DAY AVG IS HIGHEST MONTHLY AVG DURING REPORTING PERIOD. PP 4-5, AND IA.2, P 5 FOR <br />EPA Forth 3320.1 (Rev.01/06) Previous editions may be used. <br /> Page 1