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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 information on the methodology and types of changes identified, see EPA's most recent odd-numbered year Annual Effluent Guidelines Review Report (PDF) (169 pp, 2MB) on the Effluent Guidelines Plan webpage. Because of this review and EPA's methodology for interpreting data and calculating loads, the calculated loads and category rankings may differ from original calculations using DMR and TRI data that have not been updated. Data that have been updated by EPA's annual reviews are indicated by green flags designating that a change has been made to a concentration, quantity, or flow value. A listing of the DMR and TRI data changes from the most recent annual review is available in the Annual Effluent Guidelines Review Report Appendices (PDF) (241 pp, 3.3MB).

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
Total Residual Chlorine 74,267 71.1 71.1
Copper 18,923 18.1 89.3
Arsenic 2,892 2.77 92.09
Boron 2,843 2.72 94.8
Pentachlorophenol 1,950 1.86 96.6
Iron 909 0.87 97.5
Benzo[a]pyrene 609 0.58 98.1
Magnesium 408 0.39 98.5
Manganese 366 0.35 98.8
Chrysene 282 0.27 99.1

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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
060300050802 Pond Creek 2,887
100402020401 Musselshell River-Roundup 1,767
050500030104 Outlet East Fork Greenbrier River 1,216
060300021101 Swan Creek 502
050302030801 Left Fork Reedy Creek 343
060300060103 Bear Creek-Bluff Creek 305
060300050808 Tennessee River-Coffee Slough 279
060300050703 Lower Spring Creek 211
040700060605 Thunder Bay River 143

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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)
AL0055395 CAHABA TIMBER CO BRIERFIELD, AL 2491 031502020405 Total Residual Chlorine 60,637
AL0026921 HERO BX ALABAMA MOUNDVILLE, AL 2499 031601130602 Total Residual Chlorine 13,211
WV0078719 ED AREY & SONS INC. BUCKHANNON, WV 2491 050200010307 Copper 12,684
AL0076953 APC FOREST PRODUCTS INC MUSCLE SHOALS, AL 2491 060300050802 Copper 2,886
NC0005266 LP ROARING RIVER WWTP ROARING RIVER, NC 2499 030401010407 Boron 2,843
AL0055395 CAHABA TIMBER CO BRIERFIELD, AL 2491 031502020405 Pentachlorophenol 1,664
MTR000318 GEBHARDT POST PLANT & SAWMILL ROUNDUP, MT 2491 100402020401 Arsenic 1,461
WV0078557 JUDY FENCECRAFT INC BARTOW, WV 2491 050500030104 Copper 1,215
AL0025437 WEST FRASER MAPLESVILLE LUMBER MILL MAPLESVILLE, AL 2421 031502011004 Iron 903
AL0068837 ALA-GA WOOD PRESERVING CO LAFAYETTE, AL 2491 031501090201 Copper 486

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