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PERMITTEE NAME/ADDRESS (Include Facility Name/location irDffrerent) 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 011-A PERMIT NUMBER I DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY MM/DD/YYYY 07/01/2015 09/30/2015 Form Approved OMB No. 2040-0004 DMR Mailing ZIP CODE: 81639 MAJOR ROUTT DSCHG TO GRASSY CREEK External Outfall No Discharge'�C PARAMETER I certify under penalty of law that this document and all attachments were prepared under my direction or QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. EX FREQUENCY OF ANALYSIS SAMPLE TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pH SAMPLE MEASUREMENT ...... .*.... ....*. penalties for submitting information including possibility vrolabons +..... ,'v AREA Code NUMBER MMIDDIYYYY 0040010 PERMIT *«***« *«***" ***"*" 6.5 ""'""' 9 SU Monthly INSITU Effluent Gross REQUIREMENT MINIMUM MAXIMUM 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 Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease SAMPLE MEASUREMENT 0358210 PERMIT **«*** «"**«* '*"" """" '«"'" 10 mg/L Contingent GRAB Effluent Gross REQUIREMENT INST MAX Flow, in conduit or thru treatment SAMPLE plant MEASUREMENT 500501 0 PERMIT Req. Mon. Req. Mon. MGD *""' """ """ *" Monthly INSTAN Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, total dissolved SAMPLE MEASUREMENT 702951 0 PERMIT *****' *""*** "*'*** "«"' Req. Mon. Req. Mon. mg/L Quarterly GRAB Effluent Gross REQUIREMENT QRTR AVG DAILY MX Oil and grease visual SAMPLE MEASUREMENT 840661 0 PERMIT ***'** Req. Mon. Y=1;N=0 ""«' """ Monthly VISUAL Effluent Gross REQUIREMENT INST MAX NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and all attachments were prepared under my direction or TELEPHONE DATE superymion 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 system, or those persons directly responsible for gathering the informatron the information submitted is _ V to the best of my knowledge and belief true accurate and complete I am aware that there are significant., false the of fine and imprisonment for knowing SIGNATURE OF PRI IPAL EXECUTIVE OFFICER OR ti Iii 'r; i % /G rG//5� 7" t' 1 penalties for submitting information including possibility vrolabons Aly7HORIZED AGENT ,'v AREA Code NUMBER MMIDDIYYYY TYPED OR PRINTED I COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) SETTLEABLE SOLIDS LIMITS WAIVED FOR >10YR,24HR PRECIP EVENT SUBJECT TO BURDEN OF PROOF IN I.A.2. OIL &GREASE - SEE 1.6 1.X. TDS MONITORING - 1.B.2. EPA Forrn 3320-1 (Rev.01/06) Previous editions may be used. 04/20/2015 Page 1