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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />PERMITTEE NAME/ADDRESS (Include Facility Name/Location it 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: James T. Cooper, EVP <br />000000132 015-A <br />PERMIT NUMBER DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 02/01/2011 TO 02/28/2011 <br />Form Approved -- <br />OMB No. 2040-0004 <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />DISCHARGE TO ELK CREEK <br />External Outfall J <br />No Discharge ML <br /> <br />PARAMETER QUAN TITY OR LOADING Q UALITY OR CONC ENTRATION NO. FREQUENCY SAMPLE <br /> EX OF ANALYSIS TYPE <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE <br /> <br />MEASUREMENT .„„ <br />"~" <br />""" <br />•••~• <br />0040010 <br /> PERMIT """ »"•' •»•• 6 <br />5 <br /> <br />Effluent Gross <br />* . 9 SU <br /> REQUIREMENT MINIMUM MAXIMUM Monthly INSITU <br />Solids, total suspended SAMPLE <br /> MEASUREMENT <br />0053010 <br /> PERMIT "`•" •""' <br />••• •••••• <br />Effluent Gross REQUIREMENT 30DA AVG MX 7D 70 <br />AV <br />mglL <br />Monthl <br />GRAB <br />Iron, total (as Fe) SAMPLE y <br /> MEASUREMENT "" ' ""•' •""' <br />0104510 <br /> PERMIT '»"• '•»» <br />•• <br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX ug>L Monthly GRAB <br />Oil and grease SAMPLE <br /> MEASUREMENT „~" """ """ •••••• <br />0358210 <br /> PERMIT t"•» •• <br /> <br />Effluent Gross <br />REQUIREMENT 10 <br />INST MAX <br />mg/L <br />C <br />nti <br />t <br />G <br /> <br />Flow, in conduit or thru treatment plant <br />SAMPLE o <br />ngen RAB <br /> MEASUREMENT »"» ••~•• ••-•» .».» <br />50050 1 0 <br /> PERMIT Req. Mon. Req <br />Mon M <br />aVd •~•~ •••••• <br /> <br />Effluent Gross <br />30DA AVG . <br />. <br />D g ...... ,,,„, <br /> REQUIREMENT AILY MX Monthl INST <br /> <br />Oil and grease visual <br />SAMPLE y AN <br /> MEASUREMENT •_••~ ,..». <br />84066 1 0 PERMIT Re q. Mon Y=1;N=0 •~•~ •••••* <br />Effluent Gross . <br />I •.,,.• <br /> REQUIREMENT N ST MAX Weekly VISUAL <br /> <br />1-ty UMer penal f hw thu Ibis document and all at[xhmenb were <br />PRINCIPA EXECUTIVE OFFICER ry° pnepaadmae mrdiraetimt° <br />supcrvuit m accordance with a d B_ designed m assure that quali(iad petso,md °r°„e,IY gather and <br />evaluate the infumutioo submiued. Baud on my inquiry of the person or persons wlw the <br />system. - those Ix*sons d-lY responsible for gathering the inf don, the information s ge he ab is, <br />m the but of my kno.lsdge and belief. uve, accurate, and complne. 1 ern..are that there are significan <br />L Fe , r? Pe l.- f sabmiuing false infomtatiun, ittcludnng the possibiliq °f fore and impris,h- for Imowin, <br />TYPED OR PRINTED a <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />30 DAY AVERAGE IS HIGHEST MONTHLY AVERAGE DURING PERIOD REPORTED. OIL & GREASE - SEE I.13A.D. <br />TELEPtUIMS DATE <br />970 9z z OF PRINCIPAL EXECU E OFFICER OR <br />AUTHORIZED AGENT ARFACod. NER MWDD/YYYY <br />r <br />EPA Forth 3320-1 (Rev.01/06) Previous editions may be used. <br />Page 1