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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 - Metal molding and casting (foundries) (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
Polychlorinated biphenyls 8,532 50.8 50.8
Lead 1,832  Original DMR load is 7,715 10.9 61.7
Copper 2,293 13.6 75.4
Iron 345  Original DMR load is 1,605 2.054 77.5
Fluoride 1,377 8.208 85.7
Aluminum 895 5.33 91.05
Total Residual Chlorine 692 4.12 95.1
Zinc 368 2.19 97.3
Cadmium 127 0.75 98.1
Nitrogen, nitrate dissolved 103 0.61 98.7

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
031602050300 Bon Secour Bay 25.6  Original DMR load is 7,169
051201090901 Butter Branch-Vermilion River 6,434
051202081003 Spider Creek-East Fork White River 2,133
050301030809 Coffee Run-Mahoning River 2,029
041000090201 Preston Run-Maumee River 1,442
071300030601 Little Lamaresh Creek-Illinois River 275
031601110105 Upper Slab Creek 131
050301020602 Little Yankee Run 95.02
050400060604 Timber Run-Licking River 57.3
102300060602 Lake Manawa-Missouri River 27.9

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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)
IL0004138 GENERAL MOTORS CORP POWERTRAIN DIV DANVILLE, IL 3321 051201090901 Polychlorinated biphenyls 6,412
AL0044628 MOBILE PULLEY AND MACHINE WORKS MOBILE, AL 3325 031602050300 Lead 15.2  Original DMR load is 5,898
IN0003573 GENERAL MOTORS LLC-BEDFORD CETC BEDFORD, IN 3365 051202081003 Polychlorinated biphenyls 2,120
OH0143081 FALCON FOUNDRY COMPANY LOWELLVILLE, OH 3366 050301030809 Copper 1,888
OH0002666 GM DEFIANCE CASTING OPERATIONS DEFIANCE, OH 3321 041000090201 Fluoride 1,359
AL0044628 MOBILE PULLEY AND MACHINE WORKS MOBILE, AL 3325 031602050300 Iron 6.7009  Original DMR load is 1,267
AL0029378 BIRMINGHAM BIRMINGHAM, AL 3325 031601110408 Lead 680
AL0000655 UNION FOUNDRY CO ANNISTON, AL 3321 031501060505 Aluminum 485
AL0075388 NORTH BIRMINGHAM PIPE PLANT BIRMINGHAM, AL 3321 Aluminum 382
AL0000655 UNION FOUNDRY CO ANNISTON, AL 3321 031501060505 Lead 373

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