PlainEnviro

EPA TRI reporting-year comparison

Largest reported-release increases from 2022 to 2023

This list ranks facilities by the absolute change in self-reported Toxic Release Inventory pounds, using only facilities that filed in both reporting years. It does not measure toxicity, exposure, compliance, production, or local health risk.

See largest decreases Read the full annual comparison

Top 100 facilities by reported-release change

The 2022 and 2023 columns show each facility’s summed annual TRI filings. The change is arithmetic: current-year pounds minus prior-year pounds.

RankFacilityState20222023ChangePercent
1 Red Dog Operations Alaska 658.7 million lb 771.3 million lb +112.6 million lb +17.1%
2 Kennecott Utah Copper Mine Concentrators & Power Plant Utah 132.4 million lb 242.8 million lb +110.4 million lb +83.4%
3 Asarco LLC Ray Complex/ Hayden Smelter & Concentrator Arizona 2.9 million lb 49.4 million lb +46.6 million lb +1631.3%
4 Dark Horse Treating Facility New Mexico 57.7 million lb 73.6 million lb +15.9 million lb +27.6%
5 Eunice Gas Plant New Mexico 298.0 thousand lb 12.3 million lb +12.0 million lb +4037.8%
6 King Ranch Gas Plant Texas 39.1 thousand lb 9.8 million lb +9.7 million lb +24870.4%
7 Hecla Greens Creek Mining Co Alaska 90.0 million lb 98.1 million lb +8.1 million lb +9.0%
8 Coeur Rochester Inc Nevada 2.1 million lb 9.2 million lb +7.2 million lb +344.8%
9 Waelz Sustainable Products LLC Indiana 3.1 million lb 9.1 million lb +5.9 million lb +190.1%
10 Dagger Draw Gas Plant New Mexico 7.6 million lb 12.5 million lb +4.9 million lb +65.2%
11 Chemical Waste Management Alabama 22.1 million lb 26.6 million lb +4.5 million lb +20.4%
12 Imco Recycling of Ohio LLC Ohio 29.2 thousand lb 4.5 million lb +4.5 million lb +15400.6%
13 Monument Gas Plant New Mexico 166.2 thousand lb 4.7 million lb +4.5 million lb +2699.6%
14 Wayne Disposal Inc Michigan 2.0 million lb 6.4 million lb +4.4 million lb +220.3%
15 U.S. Army Radford Army Ammunition Plant Virginia 8.2 million lb 12.0 million lb +3.8 million lb +46.1%
16 Cripple Creek & Victor Gold Mining Co Colorado 2.5 million lb 5.7 million lb +3.2 million lb +131.1%
17 Pinto Valley Mine Arizona 6.8 million lb 9.5 million lb +2.7 million lb +40.2%
18 Cleveland-Cliffs Cleveland Works LLC Ohio 5.2 million lb 7.6 million lb +2.5 million lb +48.2%
19 Blanchard Refining Co LLC Texas 4.7 million lb 6.8 million lb +2.1 million lb +44.0%
20 Southwest Cheese LLC New Mexico 106.8 thousand lb 2.1 million lb +2.0 million lb +1844.9%
21 Elemental Environmental Solutions LLC Arkansas 559.6 thousand lb 2.4 million lb +1.8 million lb +322.3%
22 Energysolutions LLC Utah 763.6 thousand lb 2.5 million lb +1.7 million lb +227.5%
23 Dyno Nobel Inc-Cheyenne Plant Wyoming 4.4 million lb 6.1 million lb +1.6 million lb +37.2%
24 Alloy Resource Corp Michigan 970.5 thousand lb 2.6 million lb +1.6 million lb +164.3%
25 Nevada Gold Mines LLC - Arturo Mine Nevada 11.8 thousand lb 1.6 million lb +1.6 million lb +13376.1%
26 Fort Knox Mine Alaska 16.6 million lb 17.9 million lb +1.3 million lb +7.7%
27 Filmtec Corp Minnesota 12.7 thousand lb 1.2 million lb +1.2 million lb +9717.3%
28 McCain Foods USA Inc. Idaho 3.7 million lb 4.9 million lb +1.2 million lb +32.7%
29 Nucor Steel Tuscaloosa Inc Alabama 572.3 thousand lb 1.7 million lb +1.2 million lb +204.8%
30 Wharf Resources South Dakota 843.6 thousand lb 2.0 million lb +1.1 million lb +132.0%
31 US Ecology Idaho Inc. Idaho 2.8 million lb 3.9 million lb +1.1 million lb +40.1%
32 US Ecology Tulsa Inc Oklahoma 766.0 thousand lb 1.9 million lb +1.1 million lb +143.9%
33 Viatris Pharmaceuticals LLC Puerto Rico 36.6 thousand lb 1.1 million lb +1.1 million lb +2939.7%
34 Columbia Energy Center Wisconsin 1.8 million lb 2.9 million lb +1.1 million lb +60.0%
35 Uss Gary Works Indiana 12.0 million lb 13.1 million lb +1.1 million lb +8.9%
36 Neptune Technology Group Inc Alabama 193.6 thousand lb 1.3 million lb +1.1 million lb +546.8%
37 Basin Electric Laramie River Station Wyoming 2.5 million lb 3.5 million lb +1.0 million lb +41.7%
38 Ultium Cells LLC Ohio 323.1 thousand lb 1.3 million lb +1.0 million lb +315.4%
39 Flopam Inc Louisiana 3.3 million lb 4.4 million lb +1.0 million lb +30.3%
40 W.r. Grace & Co. Oregon 3.5 thousand lb 984.1 thousand lb +980.6 thousand lb +28019.6%
41 McCain Foods USA Inc Washington 351.8 thousand lb 1.3 million lb +976.0 thousand lb +277.4%
42 Koch Fertilizer Enid LLC Oklahoma 4.9 million lb 5.8 million lb +971.6 thousand lb +20.0%
43 American Electric Power Amos Plant West Virginia 2.2 million lb 3.1 million lb +964.3 thousand lb +44.1%
44 Citgo Refining & Chemicals Co LP East Plant Texas 1.2 million lb 2.1 million lb +941.6 thousand lb +80.4%
45 Formosa Plastics Corp Texas Texas 1.4 million lb 2.4 million lb +924.6 thousand lb +63.9%
46 Climax Molybdenum Co-Henderson Mine Colorado 2.4 million lb 3.4 million lb +913.9 thousand lb +37.5%
47 Fletcher Mine/mill Missouri 4.1 million lb 5.0 million lb +912.6 thousand lb +22.4%
48 Buick Mine/mill Missouri 8.4 million lb 9.3 million lb +871.2 thousand lb +10.3%
49 Tesla Gigafactory Nevada 203.2 thousand lb 1.1 million lb +857.3 thousand lb +421.9%
50 Tyson Poultry Inc-Broken Bow Processing Plant Oklahoma 1.3 million lb 2.1 million lb +825.5 thousand lb +64.3%
51 Colstrip Steam Electric Station Montana 8.4 million lb 9.2 million lb +822.9 thousand lb +9.8%
52 Rayonier Performance Fibers Jesup Mill Georgia 3.8 million lb 4.6 million lb +768.1 thousand lb +20.1%
53 Vibrantz Specialty Products LLC Tennessee 2.9 million lb 3.6 million lb +752.6 thousand lb +26.4%
54 Chemtrade Solutions-Syracuse New York 11.5 thousand lb 750.4 thousand lb +738.9 thousand lb +6421.1%
55 Northside Generating Station Florida 1.5 million lb 2.2 million lb +735.1 thousand lb +48.8%
56 Chevron Products Co Pascagoula Refinery Mississippi 1.5 million lb 2.2 million lb +716.0 thousand lb +48.7%
57 Gulf Coast Growth Ventures LLC Texas 486.9 thousand lb 1.2 million lb +705.5 thousand lb +144.9%
58 Tyson Fresh Meats Inc - Joslin Il Illinois 1.5 million lb 2.2 million lb +691.3 thousand lb +44.7%
59 Workhorse Cabs LLC DBA Crenlo Engineered Cabs South Dakota 47.3 thousand lb 728.4 thousand lb +681.0 thousand lb +1438.5%
60 Tradebe Treatment & Recycling of Tn Tennessee 706.0 thousand lb 1.4 million lb +680.0 thousand lb +96.3%
61 Vickery Environmental Inc. Ohio 5.1 million lb 5.7 million lb +678.6 thousand lb +13.4%
62 Carpenter Technology Corp Pennsylvania 877.8 thousand lb 1.5 million lb +668.9 thousand lb +76.2%
63 Brenntag Mid-South North Carolina 3.1 thousand lb 665.3 thousand lb +662.2 thousand lb +21394.4%
64 Basf Corp Attapulgus Ops Georgia 4.4 million lb 5.0 million lb +657.5 thousand lb +15.1%
65 US Ecology Nevada Inc. Nevada 9.0 million lb 9.6 million lb +649.1 thousand lb +7.2%
66 Blacks Fork Gas Plant Wyoming 226.1 thousand lb 870.7 thousand lb +644.7 thousand lb +285.2%
67 Structural Metals Inc Texas 633.6 thousand lb 1.2 million lb +591.4 thousand lb +93.3%
68 Diamond Shamrock Refining Co LP Texas 973.4 thousand lb 1.6 million lb +587.6 thousand lb +60.4%
69 Kawasaki Motors Manufacturing Corp USA Nebraska 44.2 thousand lb 616.6 thousand lb +572.4 thousand lb +1295.3%
70 Apollo Metals Ltd Pennsylvania 677.6 thousand lb 1.2 million lb +568.0 thousand lb +83.8%
71 Lsb Chemical L.L.C. Oklahoma 2.0 million lb 2.6 million lb +567.2 thousand lb +28.1%
72 Sanderson Farms LLC Texas 1.2 million lb 1.7 million lb +552.4 thousand lb +47.6%
73 Garfield Facility LLC Indiana 462.4 thousand lb 1.0 million lb +549.2 thousand lb +118.8%
74 Freeport-McMoran Safford Inc Arizona 1.1 million lb 1.6 million lb +543.8 thousand lb +50.9%
75 Pcs Nitrogen Fertilizer LP Georgia 4.0 million lb 4.5 million lb +536.6 thousand lb +13.5%
76 Climax Molybdenum Co Henderson Mill Colorado 869.8 thousand lb 1.4 million lb +536.6 thousand lb +61.7%
77 Baker Petrolite Bayport Facili Ty Texas 121.0 thousand lb 641.1 thousand lb +520.1 thousand lb +430.0%
78 Kraton Corp Ohio 864.5 thousand lb 1.4 million lb +519.5 thousand lb +60.1%
79 Lsb Chemical L.l.c Arkansas 512.0 thousand lb 1.0 million lb +514.7 thousand lb +100.5%
80 Chemical Waste Management - la Ke Charles Facility Louisiana 4.6 million lb 5.1 million lb +514.4 thousand lb +11.3%
81 Felman Production Inc West Virginia 1.7 million lb 2.2 million lb +512.8 thousand lb +29.9%
82 Smithfield Fresh Meats Corp - Tar Heel North Carolina 3.1 million lb 3.6 million lb +504.5 thousand lb +16.2%
83 Smelter Service Corp Tennessee 219.2 thousand lb 723.3 thousand lb +504.1 thousand lb +230.0%
84 Cascade Steel Rolling Mills Inc Oregon 463.0 thousand lb 960.1 thousand lb +497.0 thousand lb +107.3%
85 Solvay Specialty Polymers USA LLC Texas 38.2 thousand lb 525.6 thousand lb +487.4 thousand lb +1275.4%
86 Climax Molybdenum Co Iowa 3.2 million lb 3.6 million lb +476.5 thousand lb +15.1%
87 International Paper-Vicksburg Mill Mississippi 1.7 million lb 2.1 million lb +473.7 thousand lb +28.3%
88 Tesla Inc California 1.0 million lb 1.5 million lb +470.9 thousand lb +45.7%
89 Duke Energy Carolinas LLC - Rogers Energy Complex North Carolina 316.0 thousand lb 782.1 thousand lb +466.2 thousand lb +147.5%
90 Regal Ware West Bend Wisconsin 62.2 thousand lb 527.4 thousand lb +465.2 thousand lb +747.9%
91 Minnkota Power Cooperative Inc. Milton R. Young Station North Dakota 4.9 million lb 5.4 million lb +453.2 thousand lb +9.2%
92 Pcs Phosphate Co Inc North Carolina 3.7 million lb 4.2 million lb +451.1 thousand lb +12.2%
93 Boise White Paper LLC Alabama 663.5 thousand lb 1.1 million lb +450.7 thousand lb +67.9%
94 Brushy Creek Mine/mill Missouri 5.6 million lb 6.0 million lb +443.5 thousand lb +8.0%
95 Dmax Ltd Ohio 74 lb 440.2 thousand lb +440.1 thousand lb +593906.4%
96 Nucor Steel Jackson Inc Mississippi 589.5 thousand lb 1.0 million lb +438.8 thousand lb +74.4%
97 Pilgrim's Pride Enterprise Processing Plant Alabama 592.6 thousand lb 1.0 million lb +430.2 thousand lb +72.6%
98 Pogo Mine Alaska 8.0 million lb 8.4 million lb +425.4 thousand lb +5.3%
99 Delta Deer Park Texas 39 lb 425.2 thousand lb +425.1 thousand lb +1100724.3%
100 International Paper - Riverdale Mill Alabama 806.2 thousand lb 1.2 million lb +422.5 thousand lb +52.4%

What this comparison can and cannot show

PlainEnviro first sums each facility’s TRI filing records within a reporting year, then compares facilities present in both complete years. This avoids treating a newly added or missing facility as a facility-level increase or decrease.

TRI figures are facility-reported estimates. A reported change can reflect production, waste handling, ownership, estimation methods, reporting corrections, or changes in what was reportable. It does not establish a cause or an environmental-performance judgment.

Data from the U.S. Environmental Protection Agency: EPA TRI Basic Data Files and EPA Toxics Release Inventory Program. Database vintage: . See the full annual comparison for national totals and completeness rules.