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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 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.

Point Source Category Information - Ore mining and dressing (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
VANADIUM AND VANADIUM COMPOUNDS 42,285 0 42,285 35.9 35.9
LEAD AND LEAD COMPOUNDS 33,648 4.94 33,653 28.5 64.4
SILVER AND SILVER COMPOUNDS 16,470 9.88 16,480 13.9 78.4
MANGANESE AND MANGANESE COMPOUNDS 5,361 7.91 5,369 4.55 83.03
CADMIUM AND CADMIUM COMPOUNDS 5,105 0 5,105 4.33 87.3
COPPER AND COPPER COMPOUNDS 2,861 538 3,399 2.88 90.2
ARSENIC AND ARSENIC COMPOUNDS 3,271 6.072 3,277 2.78 93.03
THALLIUM AND THALLIUM COMPOUNDS 2,850 0 2,850 2.42 95.4
ZINC AND ZINC COMPOUNDS 2,051 2.1 2,053 1.74 97.2
NITRATE COMPOUNDS 1,058 0.00038 1,058 0.89 98.09

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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)
080401010806 Lake Hamilton Dam 42,055 0 42,055
110100070401 Headwaters Logan Creek 3,082 0 3,082
020600031202 Curtis Creek-Curtis Bay 1,315 7.601 1,322
041503020801 Turnpike Creek-Oswegatchie River 1,040 0 1,040
060101040307 Holston River-Clift Creek 185 0 185
170103020301 Twomile Creek-South Fork Coeur d'Alene River 161 0 161
170103020101 Little North Fork South Fork Coeur d'Alene River-South Fork Coeur d'Alene River 85.7 0 85.7
051301060310 Cumberland River-Turkey Creek 68.56 0 68.56
071100040301 Ghost Hollow-Mississippi River 53.56 0 53.56
101202030402 Upper False Bottom Creek 30.4 0 30.4

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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)
71901SVNDM5911M EVRAZ STRATCOR INC HOT SPRINGS, AR 212291 080401010806 VANADIUM AND VANADIUM COMPOUNDS 42,000 0 42,000
65440BCKMNHWYKK BUICK MINE/MILL BOSS, MO 212231 LEAD AND LEAD COMPOUNDS 11,906 0 11,906
63629FLTCHHWYTT FLETCHER MINE/MILL CENTERVILLE, MO 212231 LEAD AND LEAD COMPOUNDS 11,720 0 11,720
84006KNNCT12300 KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON, UT 212234 SILVER AND SILVER COMPOUNDS 8,235 0 8,235
84006KNNCT8362W KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA, UT 331410 SILVER AND SILVER COMPOUNDS 8,235 0 8,235
63629BRSHYHWYKK BRUSHY CREEK MINE/MILL BOSS, MO 212231 LEAD AND LEAD COMPOUNDS 5,965 0 5,965
8042WCLMXMHIGHW CLIMAX MOLYBDENUM CO-CLIMAX MINE CLIMAX, CO 212299 MANGANESE AND MANGANESE COMPOUNDS 3,708 0 3,708
63638SWTMMHIGHW SWEETWATER MINE/MILL ELLINGTON, MO 212231 110100070401 LEAD AND LEAD COMPOUNDS 2,948 0 2,948
84006KNNCT8362W KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA, UT 331410 CADMIUM AND CADMIUM COMPOUNDS 2,626 0 2,626
84006KNNCT8362W KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA, UT 331410 ARSENIC AND ARSENIC COMPOUNDS 1,941 0 1,941

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