2014-04-08_HYDROLOGY - C1981022 (2)

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PERMITTEE NAME/ADDRESS (Include FacllrtyNama/Locabon dDifferent) NAME: Oxbow Mining LLC ADDRESS: PO Box 535 Somerset, CO 81434 FACILITY: ELK CREEK MINE LOCATION: 3737 HWY 133 SOMERSET, CO 81434 ATTN' Mike Ludlow, Exec VP NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) DISCHARGE MONITORING REPORT (DMR) COG850064 I 015 -B PERMIT NUMBER DISCHARGE N MB R MONITORING PERIOD MWDD/YYYY MWDD/YYYY 01/0112014 03/31/2014 DMR Mailing LP CODE: MINOR Discharge to Elk Creek External Outfall Form Approved OMB No. 2040 -0004 81434 No Discharge COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) Settleable solids limit waived for 10 -yr, 24 hr precip event subject to burden of proof requirements in Part I.B.6. Any additional data shall be supplied to the division within 48 hours EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 08/26/2013 Page 1 NAMEITITLE PRINCIPAL EXECUTIVE OFFICER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER TYPED OR PRINTED EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pH SAMPLE .. # # MEASUREMENT 004001 0 PERMIT * * * *•• . # ###4 •••*** 6.5 ""'" 9 SU Twice Per GRAB Effluent Gross REQUIREMENT MINIMUM MAXIMUM Month Solids, total suspended SAMPLE * * " "•* • *' "" • »•••• "**• ~~ MEASUREMENT 005301 0 PERMIT « **"•• • ~•••~ ""~•• ~~•*~• 35 70 mg /L Twice Per GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Month Solids, settleable SAMPLE * * *••• '••• ** « ***•` •••* ** MEASUREMENT 005451 0 PERMIT ~ * " * *• »• ~••* * * * *•* --- Req. Mon. .5 mUL Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total recoverable SAMPLE "• * " *~ * " * *•* : " * "•* *••• ~• MEASUREMENT 009801 0 PERMIT " ~ *••• •' ~ "* ~•'~ *• •"• ~~ 1000 Req. Mon. ug /L Twice Per GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Month Oil and 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 *'""" `•""" *"""•• ••"•* Continuous RCORDR Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, total dissolved SAMPLE •`• *~* * *•••" "•• « #" .. *••• ••• «`" MEASUREMENT 702951 0 PERMIT • *•••~ `••••" '••••" * ""* ~~ ~•' «•" Req. Mon. mg /L Quarterly GRAB Effluent Gross REQUIREMENT DAILY MX COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) Settleable solids limit waived for 10 -yr, 24 hr precip event subject to burden of proof requirements in Part I.B.6. Any additional data shall be supplied to the division within 48 hours EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 08/26/2013 Page 1 NAMEITITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel property gather and ablate the mrormaton submitted Based on my inquiry of me person or persons whom ttie system, or those persons directly responsible for gathering me information, the information submitted s, to me beat of my knowledge and belief, true accurate, aid complete I am aware that there are sgnRicant penahus for submitting False information, including the possibility of fine and anpnsonmem for n° wig violations 1 // /t r / . YI /tY /I LEPHONE DATE t IA O �9Z j�2 SIGNATURE OF P NCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT TYPED OR PRINTED w Nut�ER MIWDDiyyyy COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) Settleable solids limit waived for 10 -yr, 24 hr precip event subject to burden of proof requirements in Part I.B.6. Any additional data shall be supplied to the division within 48 hours EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 08/26/2013 Page 1