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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 - 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 (PCBs) 8,532 72.2 72.2
Fluoride, total (as F) 2,122 17.9 90.2
Chlorine, total residual 449 3.8002 94.04
Lead, total recoverable 148 1.24 95.2
Lead, total (as Pb) 103 0.87 96.1
Nitrogen, nitrate total (as N) 102 0.86 97.03
Cadmium, total recoverable 79.8 0.67 97.7
Nitrogen, ammonia total (as N) 66.4 0.56 98.2
Zinc, total recoverable 32.4 0.27 98.5
Copper, total (as Cu) 32.2 0.27 98.8

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
051201090901 Butter Branch-Vermilion River 6,434
041000090201 Preston Run-Maumee River 2,188
051202080806 Wolf Creek-Salt Creek 2,133
071300030601 Little Lamaresh Creek-Illinois River 275
031601110105 Upper Slab Creek 131
102300060602 Lake Manawa-Missouri River 27.9
070900050407 Lake Louise-Rock River 23.9
051201060205 Ruple Ditch-Tippecanoe River 10.5
051201080603 Fall Branch-Wabash River 9.89
051202011202 Bean Creek-Pleasant Run 8.42

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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
IN0003573 GENERAL MOTORS LLC BEDFORD, IN 3365 051202080806 Polychlorinated biphenyls 2,120
OH0002666 GM DEFIANCE CASTING OPERATIONS DEFIANCE, OH 3321 041000090201 Fluoride 2,104
IL0001830 CATERPILLAR INC.-MAPLETON MAPLETON, IL 3321 071300030601 Total Residual Chlorine 274
AL0001791 MCWANE CAST IRON PIPE COMPANY BIRMINGHAM, AL 3321 031601110408 Lead 111
AL0076309 GLIDEWELL SPECIALTIES FOUNDRY CALERA, AL 3321 031501070405 Total Residual Chlorine 108
AL0076309 GLIDEWELL SPECIALTIES FOUNDRY CALERA, AL 3321 031501070405 Nitrogen, nitrate dissolved 102
TX0001465 TYLER PIPE CO TYLER, TX 3321 120100020104 Lead 83.9
AL0055026 MUELLER CO ALBERTVILLE, AL 3321 031601110105 Cadmium 79.8
AL0055026 MUELLER CO ALBERTVILLE, AL 3321 031601110105 Total Residual Chlorine 46.4

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