2013-10-08_HYDROLOGY - C1981022 (3)

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PERMITTEE NAME/ADDRESS (Include Facility Nameit.ocation if Different) 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 015 -X P RMI MONITORING PERIOD MM/DD/YYYY MM/DD/YYYY 07/01/2013 09/30/2013 Form Approved OMB No. 20404004 DMR Mailing ZIP CODE: 81434 MINOR Chronic WET Testing for 015B External Outfall No Discharge NAME/TITLE PRINCIPAL EXECUTIVE OFFICER Ice try under penalty of law that this document and all attachments were prepared under my direction or ^ TELEPHONE DATE supenni— in accordance mth a system designed to assure that qualified personnel property gather and G valuate the information submeted Based on my inquiry of the person or persons who manage they l _ Q Iry��f t system or those persons directly responsible for gathering the information, the information submitted C, 1 to the best of my knowledge and belief true accurate and complete I am —fe that there are significant penalties for submitting fake information including he possibAdy of fine and imp wonment for S)G TURE OF PRINCIPAL EX CUTIVE OFFICER OR 9%d yZ'• ✓ 8� O? ZO TYPED OR MINTED nownng violations AUTHORIZED AGENT NUMBER MMIDorifyyY ARFA Cada COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) Rpt lowest % at which statistically signif cliff between test & control using test code "S ". Rpt IC25 using test code "P ". Use test code "T" to report highest % reported between IC25 and statistically signif dill for ceriodaphnia and pimephales. EPA Form 3320.1 (Rev.01106) Previous editions may be used. 08/26/2013 Page 1 QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS Toxicity [chronic], Ceriodaphnia dubi i SAMPLE MEASUREMENT "••'• ••'• *' ' *' "'• .5 0 •••'•• ••• "• O/0 �,y� G 61426 P 0 PERMIT ' *'• *' ' " "'• "`•" Req. Mon. " "" " "" tox chrork Quarterly GRAB -3 See Comments REQUIREMENT SINGSAMP Toxicity [chronic], Ceriodaphnia dubi SAMPLE MEASUREMENT ••`••' ' *••" ' * "" sZ % " "" "`•" 0/0 1/v l P9!5 61426 S 0 PERMIT ~**•* "• * ** "' *•` Req. Mon. " "" " "`* tox chronic Quarterly GRAB -3 See Comments REQUIREMENT SINGSAMP Toxicity [chronic], Pimephales promelas [Fathead Minnow] SAMPLE MEASUREMENT `• "" ' * "•* "' *" , /� 0 "*`*' " "•" Q/p () t / 61428 P 0 PERMIT ~'•" • *• ~• `** "' Req. Mon. " "" " " *` tox chronic Quarterly GRAB -3 See Comments REQUIREMENT SINGSAMP Toxicity [chronic], Pimephales promelas [Fathead Minnow] SAMPLE MEASUREMENT •' *••• •"* "•• "" *• it" """ "• "• b 4, Q 1 /i� p �j�✓� 8 61428 S 0 PERMIT '• "•* "• *•' • * "" Req. Mon. " "" "`•" tox chronic Quarterly GRAB -3 See Comments REQUIREMENT SINGSAMP %Effect Static Renewal 7 Day Chron Cenodaphnia dubia c SAMPLE MEASUREMENT ~ "•' " "~ " "•` 2 j� • J '•• "` • " "• O� )/y D D ,n 61a TCP3B P 0 PERMIT •' ~ *` '• "•' •• "" Req. Mon. " "• " "'" % Quarterly GRAB -3 See Comments REQUIREMENT SINGSAMP %Effect Static Renewal 7 Day Chron Cenodaphnia dubia c SAMPLE MEASUREMENT ' *• "' ••* "' "• "' " "•' " "" D 9v W tsf`� TCP3B S 0 PERMIT ' *•• *• "• *•' • " "` Req. Mon. • ""' """ % Quarterly GRAB -3 See Comments REQUIREMENT MN VALUE %Effect Static Renewal 7 Day Chron Cenodaphnia dubia c SAMPLE MEASUREMENT '••••• * "••• "• "' "• *" ••• "' 0 PERMIT ' * " ** * *•• *' " "•' 100 "' ~• • * "•' % Quarterly GRAB -3 TCP3B T 0 See Comments REQUIREMENT MN VALUE NAME/TITLE PRINCIPAL EXECUTIVE OFFICER Ice try under penalty of law that this document and all attachments were prepared under my direction or ^ TELEPHONE DATE supenni— in accordance mth a system designed to assure that qualified personnel property gather and G valuate the information submeted Based on my inquiry of the person or persons who manage they l _ Q Iry��f t system or those persons directly responsible for gathering the information, the information submitted C, 1 to the best of my knowledge and belief true accurate and complete I am —fe that there are significant penalties for submitting fake information including he possibAdy of fine and imp wonment for S)G TURE OF PRINCIPAL EX CUTIVE OFFICER OR 9%d yZ'• ✓ 8� O? ZO TYPED OR MINTED nownng violations AUTHORIZED AGENT NUMBER MMIDorifyyY ARFA Cada COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) Rpt lowest % at which statistically signif cliff between test & control using test code "S ". Rpt IC25 using test code "P ". Use test code "T" to report highest % reported between IC25 and statistically signif dill for ceriodaphnia and pimephales. EPA Form 3320.1 (Rev.01106) Previous editions may be used. 08/26/2013 Page 1