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Discharge Monitoring Report (DMR) Pollutant Loading Tool

Note:This area of the DMR Loading Tool includes data used for EPA's annual review of industrial effluent discharges. EPA's Office of Water is responsible for developing programs and tools authorized under the Clean Water Act (CWA), which enables EPA and the states to protect and restore the Nation's waters. The CWA requires EPA to annually review and, if appropriate, revise its water pollution control technology-based regulations, called "effluent limitations guidelines" or "effluent guidelines," that limit the discharge of pollutants to waters of the U.S. from industrial facilities. As part of the EPA's annual reviews, EPA estimates the load of pollutants discharged using a combination of discharge monitoring report (DMR) data, from ICIS-NPDES, and Toxics Release Inventory (TRI) data. EPA also assigns a relative toxic weight to the estimated loads to rank industrial categories by toxic weighted pound equivalents (TWPE). For more background on EPA's effluent guidelines program see EPA's Effluent Guidelines website.

EPA reviews the DMR and TRI data used to calculate effluent loads and TWPE for accuracy prior to further investigating industrial categories for possible effluent guideline revisions. For identified outlier data, EPA contacts states and facilities to confirm and update (if appropriate) data values and units. For more information on the types of errors identified, see EPA's Technical Support Document for the 2010 Effluent Guidelines Program (PDF) (255 pp, 3.4MB). Because of this review, and EPA's methodology for interpreting data and calculating loads (explained in EPA's Technical Support Document for the Annual Review of Existing Effluent Guidelines and Identification of Potential New Point Source Categories), the calculated loads and category rankings may differ using DMR and TRI data that has not been updated. Data that have been updated by EPA's annual reviews are flagged by green flags designating that a change has been made to a concentration, quantity, or flow value. View a listing of the changes for the most recent annual review (PDF) (1 pg, 7K).

Point Source Category Information - Timber products processing (DMR)

EPA 304M Annual Review flag — Indicates load was altered by EPA’s 304M Annual Review. You can hover over the green flag to see the original load from the DMR data.

Top Pollutants - Toxic-Weighted Pounds (TWPE) (2011)
Pollutant Name Total DMR TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
Copper, total (as Cu) 12,984 67.5 67.5
Boron, total (as B) 2,843 14.8 82.3
Arsenic, total (as As) 1,551 8.075 90.4
Arsenic, total recoverable 446 2.32 92.7
Chlorine, total residual 414 2.15 94.9
Nitrogen, ammonia total (as N) 251 1.309 96.2
Zinc, total (as Zn) 216 1.12 97.3
Chloride (as Cl) 153 0.79 98.1
Benzo(a)anthracene 49.06 0.25 98.4
Aluminum, total (as Al) 48.4 0.25 98.6

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
050200010307 Pecks Run-Buckhannon River 13,072
100402020401 Musselshell River-Roundup 1,767
050302030801 Left Fork Reedy Creek 343
040700030309 Grass Creek-Frontal Lake Huron 143
050500070604 Little Otter Creek-Elk River 81.8
050500020801 Headwaters Brush Creek 48.4
031602040504 Toulmins Spring Branch-Three Mile Creek 43.9
170601080110 Rock Creek-Palouse River 9.038
050200010408 Laurel Run-Tygart Valley River 8.88
071401060809 Little Crab Orchard Creek-Crab Orchard Creek 7.94

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
NPDES ID Facility Name City, State SIC Code HUC-12 Code Top Pollutant Top Pollutant TWPE (lb-eq/yr)
WV0078719 ED AREY & SONS INC. BUCKHANNON, WV 2491 050200010307 Copper 12,684
NC0005266 LOUISIANA-PACIFIC CORPORATION - ROARING RIVER ROARING RIVER, NC 2499 030401010407 Boron 2,843
MTR000318 GEBHARDT POST PLANT & SAWMILL ROUNDUP, MT 2491 100402020401 Arsenic 1,461
MTR000318 GEBHARDT POST PLANT & SAWMILL ROUNDUP, MT 2491 100402020401 Copper 293
NC0005266 LOUISIANA-PACIFIC CORPORATION - ROARING RIVER ROARING RIVER, NC 2499 030401010407 Total Residual Chlorine 277
WV0078719 ED AREY & SONS INC. BUCKHANNON, WV 2491 050200010307 Ammonia as N 234
WV0111813 STELLA-JONES CORP REEDY, WV 2491 050302030801 Arsenic 224
NC0005266 LOUISIANA-PACIFIC CORPORATION - ROARING RIVER ROARING RIVER, NC 2499 030401010407 Zinc 212
AL0066184 BROWN WOOD PRESERVING CO., INC KENNEDY, AL 2491 031601050203 Arsenic 192
WV0078719 ED AREY & SONS INC. BUCKHANNON, WV 2491 050200010307 Chloride 153

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