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PERMITTEE NAME/ADDRESS (Include Facility Name/Location if Different) 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 010-A PERMIT NUMBER I DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY MM/DD/YYYY 07/01/2015 09/30/2015 Dc*�Q-Csz Form Approved OMB No 2040-0004 DMR Mailing ZIP CODE: 81639 MAJOR ROUTT DSCHG TO TRIB/GRASSY CREEK External Outfall No Discharge a NAMEMTLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and all attachments were prepared under my direction of supervision in accordance wnh 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 information the information submitted is, to the best of my knowledge and belief true accurate and complete I am aware that there are sgnrticant for submitting false information including the possibility of fine and imprisonment for knowmg violations QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER SIGNATURE OF P CIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pH SAMPLE MEASUREMENT ...«.. .....+ *..... a -i *...~. t L ` I 0040010 Effluent Gross PERMIT REQUIREMENT ***"*• ****** *'"*** 6.5 MINIMUM *"*** 9 MAXIMUM SU Monthly INSITU Solids, settleable SAMPLE MEASUREMENT '*'~•' *'**** ****** "***' < % M �l ` C% V 3 U '- PERMIT "****" ****** *•*"** ""'*** Req. Mon. .5 mUL Monthly GRAB 005451 0 Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total recoverable SAMPLE MEASUREMENT PERMIT ***'~* *~*'~~ '•**** **"~** 1000 Req. Mon. ug/L Monthly GRAB 009801 0 Effluent Gross REQUIREMENT 30DA AVG DAILY MX Copper, potentially dissolved SAMPLE MEASUREMENT **'**' *'*'** •***** **'*** ( /�' ' ��)IL (/ 3c / V 013061 0 PERMIT ****«* •*'~*• •'~~** "****~ Req. Mon. Req. Mon. ug/L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Selenium, potentially dissolvd SAMPLE MEASUREMENT ***""* **'*•' "`*"* ****** [ f �L PERMIT ****** *'*••' **•"* ****** Req. Mon. Req. Mon. ug/L Monthly GRAB 013231 0 Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease SAMPLE MEASUREMENT A/A, 0358210 PERMIT '~**"* *«**** **••** '***"* ****** 10 mg/L Contingent GRAB Effluent Gross REQUIREMENT INST MAX Flow, in conduit or thru treatment SAMPLE MEASUREMENT s -500plant . 4s - ""*` ~*"** ""`• •*`*** _ PERMIT Req. Mon. Req. Mon. MGD *~'«** ***'«* ***~"* ****** Monthly INSTAN 500501 501 0 Effluent Gross REQUIREMENT 30DA AVG DAILY MX NAMEMTLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and all attachments were prepared under my direction of supervision in accordance wnh 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 information the information submitted is, to the best of my knowledge and belief true accurate and complete I am aware that there are sgnrticant for submitting false information including the possibility of fine and imprisonment for knowmg violations TELEPHONE DATE 4 `1% n 1 .7 �� ,� �,� wpenalties Ab., I } 1v1„4 % J •• j ) -';%/� �c /IJ % t 1S SIGNATURE OF P CIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT TYPED OR PRINTED AREA Code NUMBER MMIDDIYYYY 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.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