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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) C00000221 006-A PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY MM/DD/YYYY 04/01/2015 06/30/2015 Form Approved OMB No. 2040-0004 DMR Mailing ZIP CODE: 81639 MAJOR ROUTT DSCHG TO TRIB/DRY CREEK External Outfall No Discharge 71 NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and all allachments were prepared under my direction or QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER 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 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 information. including the possibility of fine and imprisonment for knowing wwanona. EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pHSAMPLE MEASUREMENT **.... ...... ...... } i f — 1 PERMIT '*'~" *~"" "'»" 6.5 """ 9 SU Monthly INSITU 0040010 Effluent Gross REQUIREMENT MINIMUM MAXIMUM Solids, settleable SAMPLE MEASUREMENT *" "' 005451 0 PERMIT '*"*' '~"** *"~' ••.... Req. Mon. .5 mL/L Monthly GRAB 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 Manganese, potentially dissolvd SAMPLE MEASUREMENT ...... *'•'^' ^"" »**** PERMIT "»~~* ~»~••» ~~•*'^ *""*^" Req. Mon. Req. Mon. ug/L Quarterly GRAB 013191 0 Effluent Gross REQUIREMENT 30DA AVG DAILY MX Selenium, potentially dissolvd SAMPLE MEASUREMENT ^• " "*"' *""* l \ l ( LI (� >l , _C� }1 013231 0 PERMIT ***»~' *'»'~ **'•" """ 4.6 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 L I I . C ,'1 �� N C 500501 0 PERMIT Req. Mon. Req. Mon. MGD ... `*"""" """'" "'"" Monthly INSTAN Effluent Gross REQUIREMENT 30DA AVG DAILY MX NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and all allachments were prepared under my direction or TELEPHONE 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 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 information. including the possibility of fine and imprisonment for knowing wwanona. ^ '/ V ltd ` 1 C z. } C'. l ffi SIGNATURE OF P CIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT ` TYPED OR PRINTED AREA Code NUMBER MM/DD/YYYY 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 1.8.1.X. TDS MONITORING - I.B.2. EPA Form 3320-1 (Rev.01106) Previous editions may be used. 04/20/2015 Page 1