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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 - Mineral Mining and Processing (TRI)

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

Top Chemicals - Toxic-Weighted Pounds (TWPE) (2011)
Chemical Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
NITRATE COMPOUNDS 1,489 50.4 1,540 58.8 58.8
POLYCYCLIC AROMATIC COMPOUNDS 604 0 604 23.06 81.8
MERCURY AND MERCURY COMPOUNDS 268 0 268 10.2 92.1
LEAD AND LEAD COMPOUNDS 150 5.22 155 5.92 98.03
AMMONIA 15.09 27.08 42.18 1.61 99.6
MANGANESE AND MANGANESE COMPOUNDS 3.51 0.36 3.88 0.14 99.7
COPPER AND COPPER COMPOUNDS 1.53 0.27 1.807 0.069 99.8
PHENOL 0 1.57 1.57 0.059 99.9
NICKEL AND NICKEL COMPOUNDS 0.21 1.14 1.36 0.052 99.9
VANADIUM AND VANADIUM COMPOUNDS 0.00009 0.44 0.44 0.016 99.9

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr)
031002060402 Kitchen Branch-Wolf Branch Frontal 59.6 0 59.6
050301010310 Sixmile Run-Ohio River 59.6 0 59.6
041201040603 Cayuga Creek 0 11.3 11.3
041000111405 North Side Sandusky Bay Frontal 7.36 0 7.36
040102011503 City of Cloquet-Saint Louis River 0 4.63 4.63
050302020102 Mile Run-Ohio River 3.5 0 3.5
051202081403 Beaver Creek 3.13 0 3.13
102901090207 Porter Mill Bend-Lake of the Ozarks 1.55 0 1.55
080703000201 Bayou Grosse Tete-Bayou Cholpe 0.69 0 0.69
080901000101 Mississippi River-Bonnet Carre Spillway 0.44 0 0.44

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemical Direct TRI TWPE (lb-eq/yr) Top Chemical Indirect TRI TWPE (lb-eq/yr) Top Chemical Total TRI TWPE (lb-eq/yr)
31715NGLHRDEPOT BASF CORP ATTAPULGUS OPS ATTAPULGUS, GA 327992 031200030203 NITRATE COMPOUNDS 937 0 937
35125RVRSDTRUSS RIVERSIDE REFRACTORIES INC PELL CITY, AL 327120 031501060605 POLYCYCLIC AROMATIC COMPOUNDS 604 0 604
31404KTLST1800E BASF CORP-SAVANNAH OPERATIONS SAVANNAH, GA 327992 030601090307 NITRATE COMPOUNDS 526 0 526
7038WBKRHG1FIRS BAKER HUGHES OILFIELD OPERATIONS INC MORGAN CITY, LA 327992 LEAD AND LEAD COMPOUNDS 85.12 0 85.12
28120NWNGC1725D NEW NGC INC (DBA NATIONAL GYPSUM CO) MOUNT HOLLY, NC 327420 030501011402 MERCURY AND MERCURY COMPOUNDS 70.2 0 70.2
33534NWNGC12949 NEW NGC INC (DBA NATIONAL GYPSUM CO) GIBSONTON, FL 327420 031002060402 MERCURY AND MERCURY COMPOUNDS 58.5 0 58.5
15077NWNGC168SH NGC INDUSTRIES LLC A SUBSIDIARY OF NEW NGC INC SHIPPINGPORT, PA 327420 050301010310 MERCURY AND MERCURY COMPOUNDS 58.5 0 58.5
35115CHMCL7444S LHOIST NA OF ALABAMA LLC CALERA, AL 327410 031502020403 MERCURY AND MERCURY COMPOUNDS 52.6 0 52.6
43085GSPRB6325H SANDVIK HYPERION WORTHINGTON, OH 327910 NITRATE COMPOUNDS 0 38.2 38.2
75859TXPSL2MILE TRNLWS LLC STREETMAN TX STREETMAN, TX 212324 120301080403 LEAD AND LEAD COMPOUNDS 28 0 28

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