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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 - Ore mining and dressing (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
Lead 1,059,523  Original DMR load is 1,283,617 83.9 83.9
Copper 22,088  Original DMR load is 174,469 1.75 85.7
Cadmium 93,491  Original DMR load is 120,057 7.407 93.1
Zinc 23,525  Original DMR load is 27,721 1.86 94.9
Arsenic 10,111  Original DMR load is 18,547 0.801 95.7
Fluoride 18,037 1.42 97.2
Ammonia as N 13,651  Original DMR load is 13,645 1.081 98.2
Manganese 7,383  Original DMR load is 7,355 0.58 98.8
Molybdenum 5,698 0.45 99.3
Selenium 1,841 0.14 99.4

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
071401020402 Crooked Creek-Huzzah Creek 1,164,859  Original DMR load is 1,572,108
110100070102 Bee Fork 11,363
110100070101 Upper West Fork Black River 7,427
110100070103 Middle West Fork Black River 5,596
040101020105 Lower Beaver River 5,023
110100070301 Strother Creek 4,560
170501110105 James Creek-Middle Fork Boise River 1,980
071401020302 Indian Creek-Courtois Creek 1,609
080202020102 Saline Creek-Little St Francis River 1,455
040301100109 Green Creek 1,366

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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)
MO0100226 VIBURNUM WW LAGOON VIBURNUM, MO 1031 071401020402 Lead 1,031,887  Original DMR load is 1,255,982
MO0100226 VIBURNUM WW LAGOON VIBURNUM, MO 1031 071401020402 Copper 14,670  Original DMR load is 167,053
MO0100226 VIBURNUM WW LAGOON VIBURNUM, MO 1031 071401020402 Cadmium 85,101  Original DMR load is 111,673
MO0100226 VIBURNUM WW LAGOON VIBURNUM, MO 1031 071401020402 Zinc 19,598  Original DMR load is 23,798
CO0000248 CLIMAX MINE SUMMIT COUNTY, CO 1061 140100020303 Fluoride 16,192
MO0100226 VIBURNUM WW LAGOON VIBURNUM, MO 1031 071401020402 Ammonia as N 13,602
MO0001856 DOE RUN, FLETCHER MINE/MILL CENTERVILLE, MO 1031 110100070102 Lead 11,323
AK0053341 POGO MINE DELTA JUNCTION, AK 1041 190405031702 Arsenic 367  Original DMR load is 8,802
CO0000248 CLIMAX MINE SUMMIT COUNTY, CO 1061 140100020303 Manganese 6,442
MO0001848 DOE RUN, BRUSHY CREEK MIN/M BUNKER, MO 1031 110100070101 Lead 6,405

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