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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 - Mineral Mining and 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
Chloride (as Cl) 7,265 37.2 37.2
Fluoride, total (as F) 5,569 28.5 65.7
Aluminum, total recoverable 2,811 14.4 80.1
Chlorine, total residual 1,032 5.28 85.4
Sulfate, total (as SO4) 922 4.72 90.1
Cyanide, weak acid, dissociable 352 1.803 91.9
Iron, total recoverable 315 1.61 93.5
Selenium, total (as Se) 286 1.46 95.04
Manganese, total recoverable 255 1.305 96.3
Selenium, potentially dissolvd 114 0.58 96.9

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
041000010101 Mouille Creek-Frontal Lake Erie 882
040700030306 Bell River-Frontal Lake Huron 229
041000010302 Halfway Creek 35.3
031001010305 Whidden Creek 2.53

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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)
FL0000655 PCS PHOSPHATE WHITE SPRINGS WHITE SPRINGS, FL 1479 031102010604 Fluoride 5,565
TX0112038 CEDAR LAKE PLANT SEAGRAVES, TX 1474 120800040602 Chloride 5,453
WV0112640 LAMBERT DOCK BELMONT, WV 5032 050302011009 Aluminum 2,805
NY0203335 WASHINGTON MILLS ELECTRO MINERALS CORP. NIAGARA FALLS, NY 3291 041201040605 Total Residual Chlorine 803
WV0112640 LAMBERT DOCK BELMONT, WV 5032 050302011009 Chloride 636
TX0112038 CEDAR LAKE PLANT SEAGRAVES, TX 1474 120800040602 Sulfate 423
WV0112640 LAMBERT DOCK BELMONT, WV 5032 050302011009 Cyanide 351
WV0112640 LAMBERT DOCK BELMONT, WV 5032 050302011009 Iron 310

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