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PERMITTEE NAME/ADDRESS (Include Facillty Name/Location ifDlfferent) NAME: Seneca Coal Co LLC ADDRESS: PO Box 670 Hayden, CO 81639-0670 FACILITY: SENECA MINE COMPLEX LOCATION: 37766 RCR 53 HAYDEN, CO 81639 ATTN: Scott Cowman/Sr Env Specialist NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) DISCHARGE MONITORING REPORT (DMR) 000000221 006-A PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD MM/DDr YYY F MM/DD/YYYY 07/01/2015 r 09/30/2015 Form Approved OMB No. 2040-0004 DMR Mailing ZIP CODE: 81639 MAJOR ROUTT DSCHG TO TRIB/DRY CREEK External Outfall No Discharge ED PARAMETER I certify under penalty of Iawthat this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and valuate the information submitted Based on my inquiry of the person or persons who manage the m system, or those persons directly responsible for gathering the information the information submitted is, to the best of my knowledge and belief, true accurate and complete I am aware that there are significant. penalties for submitting false m/ormabon Including me poss�mlity of lime and imprisonment for knowing olations QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. EX FREQUENCY OF ANALYSIS SAMPLE TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pHSAMPLE MEASUREMENT ...*." ...... .."... 7,8& *.*... G SUI u 1/'c( C) 1/U 004001 0 Effluent Gross PERMIT REQUIREMENT ****** *****" '**"** 6.5 MINIMUM **""*" 9 MAXIMUM SU Monthly INSITU Solids, settleable SAMPLE MEASUREMENT ` \ 0 Lf�'* j ft -IL L v 3C, 005451 0 Effluent Gross PERMIT REQUIREMENT *"*'* "«`"«* **""* *"`«"« Req. Mon. 30DA AVG .5 DAILY MX mUL Monthly GRAB Iron, total recoverable SAMPLE MEASUREMENT 009801 0 Effluent Gross PERMIT REQUIREMENT **'"** "`**"* `"«""* * **" 1000 30DA AVG Req. Mon. DAILY MX ug/L Monthly GRAB Manganese, potentially dissolvd SAMPLE MEASUREMENT *"'**' *"**' '*"*' *"""`" -'5 ) R 013191 0 Effluent Gross PERMIT REQUIREMENT **"*** "«*`** *""*** **"**' Req. Mon. 30DA AVG Req. Mon. DAILY MX ug/L Quarterly GRAB Selenium, potentially dissolvd SAMPLE MEASUREMENT (�� 0 5 fir)/C, O 013231 0 Effluent Gross PERMIT REQUIREMENT ****** ***`** *"«""" **"*' 4.6 30DA AVG Req. Mon. DAILY MX ug/L Monthly GRAB Oil and grease SAMPLE MEASUREMENT 0358210 Effluent Gross PERMIT REQUIREMENT ****** ****" c-, Cj *"**"* **`*"" `""'"" 10 INST MAX mg/L Contingent GRAB Flow, in conduit or thru treatment plant SAMPLE MEASUREMENT L`' r� 0 , G o C) /yv .1'/L/ `) 500501 0 PERMIT Req. Mon. Req. Mon. MGD *"'*"" ""`""" Monthly INSTAN Effluent Gross REQUIREMENT 30DA AVG DAILY MX NAMEITITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of Iawthat this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and valuate the information submitted Based on my inquiry of the person or persons who manage the m system, or those persons directly responsible for gathering the information the information submitted is, to the best of my knowledge and belief, true accurate and complete I am aware that there are significant. penalties for submitting false m/ormabon Including me poss�mlity of lime and imprisonment for knowing olations ' SIGNATURE OF P NCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT TELEPHONE DATE 1/ C [: ✓1 � � ' %J • v ,,"v • {7 % v TYPED OR PRINTED naen code NUMBER MMIDDIYYYY COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) SETTLEABLE SOLIDS LIMITS & FINAL TR IRON LIMITS WAIVED FOR >10YR,24HRPRECIP EVENT SUBJECT OF BURDEN OFPROOF IN I.A.3. OIL & GREASE - SEE 1.6.1.X. TDS MONITORING - 1.B.2. EPA Form 3320-1 (Rev.01/06) Previous editions may be used. 04/20/2015 Page 1