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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 - Waste combustors (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
Cadmium 2,968 33.7 33.7
Mercury 1,258 14.2 48.005
Total Residual Chlorine 1,234 14.01 62.01
Arsenic 691 7.85 69.8
Selenium 569 6.46 76.3
Lead 531 6.035 82.3
Silver 288 3.27 85.6
Copper 198 2.25 87.8
Ammonia as N 177 2.0068 89.8
Zinc 142  Original DMR load is 139 1.61 91.5

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
120401040703 Vince Bayou-Buffalo Bayou 4,925
121101110204 Timon Creek-Nueces River 1,230
071300011602 Coal Creek-Farm Creek 888
071300020805 Town of Streator-Middle Vermilion River 532
071401040111 Owl Creek-Big River 229
010801010703 North Branch Upper Ammonoosuc River 194
060400060503 Lower Cypress Creek 130
041100010505 Plum Creek 89.8
080401020502 Deceiper Creek-Ouachita River 80.6
050600021602 Big Run-Scioto River 52.1

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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)
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Cadmium 2,901
TX0132799 CITY OF GEORGE WEST WWTP GEORGE WEST, TX 4953 121101110204 Total Residual Chlorine 1,229
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Arsenic 633
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Selenium 561
IL0075647 STREATOR ENERGY PARTNERS LLC STREATOR, IL 4953 071300020805 Mercury 532
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Silver 282
MO0108774 ST FRANCOIS CO ENVIR CORP PARK HILLS, MO 4953 071401040111 Lead 225
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Lead 195
NH0023523 AVRRDD WWTP BERLIN, NH 4953 010801010703 Ammonia as N 157

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