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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 - Fertilizer manufacturing (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
Fluoride 577,434 97.3 97.3
Aluminum 5,532 0.93 98.2
Cadmium 3,871 0.65 98.9
Total Residual Chlorine 2,655 0.44 99.3
Ammonia as N 1,424 0.24 99.6
Radium-226 968 0.16 99.7
Nitrogen, nitrate dissolved 529 0.089 99.8
Sulfate 203 0.034 99.9
Zinc 146 0.024 99.9
Lead 137 0.023 99.9

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
080702040202 Bayou Des Acadiens-Pipeline Canal 534,751
080903010103 St James Canal 52,229
080903010101 Bayou Napoleon-Bayou Verret 736
060300051002 Colbert Creek-Pickwick Lake 686
080402010803 Crooked Creek-Ouachita River 595
060300050803 Sweetwater Creek-Tennessee River 125
071100040702 Buffalo Creek-Mississippi River 121
041000070306 Lima Reservoir-Ottawa River 101
070600050205 Little Menominee River-Mississippi River 89.05
102702020404 Snake Creek-Big Blue River 84.7

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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)
LA0004847 MOSAIC FERTILIZER LLC UNCLE SAM PLANT UNCLE SAM, LA 2874 080702040202 Fluoride 533,623
LA0029769 MOSAIC PHOSPHATES CO FAUSTINA PLANT SAINT JAMES, LA 2819 080903010103 Fluoride 42,818
LA0029769 MOSAIC PHOSPHATES CO FAUSTINA PLANT SAINT JAMES, LA 2819 080903010103 Aluminum 5,532
LA0029769 MOSAIC PHOSPHATES CO FAUSTINA PLANT SAINT JAMES, LA 2819 080903010103 Cadmium 3,831
AL0071978 TESSENDERLO KERELY INC EUFAULA, AL 2873 031300031307 Total Residual Chlorine 2,039
MS0003115 MISSISSIPPI PHOSPHATES CORP PASCAGOULA, MS 2874 031700090301 Fluoride 993
LA0004847 MOSAIC FERTILIZER LLC UNCLE SAM PLANT UNCLE SAM, LA 2874 080702040202 Radium-226 960
AL0000418 CHEROKEE NITROGEN CHEROKEE, AL 2873 060300051002 Total Residual Chlorine 591
LA0000418 CF INDUSTRIES - DONALDSONVILLE NITROGEN COMPLEX DONALDSONVILLE, LA 2873 080903010101 Ammonia as N 532
AR0000752 EL DORADO CHEMICAL CO EL DORADO, AR 2873 080402010803 Ammonia as N 332

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