PlainEnviro

EPA TRI reporting-year comparison

Largest reported-release decreases 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 increases 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 Nevada Gold Mines LLC - Goldstrike Mines Inc Nevada 210.6 million lb 92.6 million lb −-117.9 million lb -56.0%
2 Sand Hills Gas Plant Texas 40.5 million lb 20.3 million lb −-20.2 million lb -49.9%
3 Nevada Gold Mines LLC - Phoenix Mine Nevada 23.2 million lb 7.0 million lb −-16.2 million lb -69.7%
4 Clean Harbors Grassy Mountain LLC Utah 14.4 million lb 5.9 million lb −-8.5 million lb -58.8%
5 Smoky Valley Common Operation Nevada 13.4 million lb 5.7 million lb −-7.7 million lb -57.6%
6 Nevada Gold Mines Llc-Cortez District Nevada 17.3 million lb 9.8 million lb −-7.5 million lb -43.6%
7 Robinson Nevada Mining Co Nevada 20.9 million lb 13.8 million lb −-7.1 million lb -33.8%
8 Basin Electric Antelope Valley Station North Dakota 34.6 million lb 28.8 million lb −-5.8 million lb -16.9%
9 Cleveland-Cliffs Steel Corp (rockport Works ) Indiana 14.1 million lb 8.8 million lb −-5.3 million lb -37.5%
10 Chemours Delisle Plant Mississippi 13.3 million lb 8.3 million lb −-5.0 million lb -37.6%
11 Clean Harbors Buttonwillow LLC California 13.1 million lb 8.1 million lb −-5.0 million lb -38.0%
12 Cleveland-Cliffs Steel LLC Indiana 5.1 million lb 438.3 thousand lb −-4.7 million lb -91.4%
13 Nyrstar Clarksville Inc Tennessee 16.9 million lb 12.6 million lb −-4.3 million lb -25.4%
14 Nasa Marshall Space Flight Center Alabama 4.3 million lb 110.1 thousand lb −-4.2 million lb -97.4%
15 Asarco LLC Mission Complex Arizona 6.4 million lb 2.2 million lb −-4.2 million lb -65.0%
16 Cleveland-Cliffs Burns Harbor LLC Indiana 12.5 million lb 8.6 million lb −-3.8 million lb -30.7%
17 Harrison Power Station West Virginia 7.4 million lb 3.6 million lb −-3.8 million lb -51.3%
18 Tronox LLC Mississippi 13.2 million lb 9.8 million lb −-3.4 million lb -25.9%
19 W H Sammis Plant Ohio 4.3 million lb 985.3 thousand lb −-3.3 million lb -77.0%
20 Chevron Oronite Co LLC - Oak Point Plant Louisiana 7.8 million lb 4.6 million lb −-3.3 million lb -41.8%
21 Ascend Performance Materials Operations LLC Florida 20.5 million lb 17.5 million lb −-3.0 million lb -14.6%
22 Enersys Energy Products Inc-Springfield 2 (formerly Northsta Missouri 3.0 million lb 12.3 thousand lb −-2.9 million lb -99.6%
23 Oceanagold Haile Gold Mine South Carolina 7.8 million lb 5.0 million lb −-2.9 million lb -36.5%
24 Outokumpu Stainless USA LLC Alabama 6.3 million lb 3.4 million lb −-2.8 million lb -45.0%
25 Sabic Innovative Plastics Mt. Vernon LLC Indiana 6.7 million lb 4.0 million lb −-2.7 million lb -39.8%
26 Nevada Gold Mines LLC - Carlin South Area Nevada 43.0 million lb 40.3 million lb −-2.6 million lb -6.2%
27 Rubicon LLC Louisiana 8.1 million lb 5.6 million lb −-2.5 million lb -31.2%
28 Bald Mountain Mine Nevada 3.3 million lb 1.1 million lb −-2.3 million lb -68.1%
29 Smithfield Packaged Meats Corp - Sioux Falls South Dakota 5.0 million lb 2.7 million lb −-2.2 million lb -45.1%
30 US Ecology Texas Inc Texas 8.4 million lb 6.2 million lb −-2.2 million lb -26.0%
31 Adm Decatur Complex Illinois 5.2 million lb 3.2 million lb −-2.0 million lb -39.1%
32 North American Stainless Kentucky 7.3 million lb 5.3 million lb −-2.0 million lb -27.8%
33 Enersys Energy Products Inc-Springfield 1 (formerly Northsta Missouri 2.0 million lb 11.3 thousand lb −-2.0 million lb -99.4%
34 Bayer Cropscience LP Louisiana 16.3 million lb 14.4 million lb −-1.9 million lb -11.9%
35 Advancion Corp Louisiana 7.0 million lb 5.1 million lb −-1.9 million lb -27.4%
36 Dte Electric Co - Monroe Power Plant Michigan 5.5 million lb 3.6 million lb −-1.9 million lb -34.3%
37 Cerro Wire LLC Indiana 5.8 million lb 3.9 million lb −-1.9 million lb -32.6%
38 Nutrien US LLC Texas 3.0 million lb 1.2 million lb −-1.9 million lb -61.2%
39 Homer City Generation LP Pennsylvania 2.3 million lb 479.4 thousand lb −-1.8 million lb -79.2%
40 Ineos Nitriles USA LLC Ohio 7.1 million lb 5.4 million lb −-1.8 million lb -24.9%
41 Union Processing Systems LLC Texas 5.1 million lb 3.4 million lb −-1.7 million lb -33.6%
42 Miller Steam Plant Alabama 2.0 million lb 337.4 thousand lb −-1.7 million lb -83.4%
43 Oak Grove Steam Electric Station Texas 3.2 million lb 1.6 million lb −-1.6 million lb -51.3%
44 US Magnesium LLC Utah 4.1 million lb 2.7 million lb −-1.5 million lb -35.7%
45 Blue Ridge Paper Products LLC North Carolina 2.3 million lb 865.0 thousand lb −-1.4 million lb -62.6%
46 Freeport-McMoran Miami Inc Arizona 27.4 million lb 26.0 million lb −-1.4 million lb -5.2%
47 Clean Harbors Lone Mountain LLC Lone Mountain Facility Oklahoma 4.2 million lb 2.9 million lb −-1.3 million lb -32.0%
48 Jeffrey Energy Center Kansas 2.5 million lb 1.2 million lb −-1.3 million lb -53.3%
49 Entech Inc Indiana 1.9 million lb 643.0 thousand lb −-1.3 million lb -66.6%
50 Ineos Nitriles USA LLC Green Lake Plant Texas 19.1 million lb 17.9 million lb −-1.3 million lb -6.6%
51 Ineos Pigments USA Inc Ohio 5.3 million lb 4.0 million lb −-1.3 million lb -23.8%
52 Max Environmental -- Yukon Facility Pennsylvania 6.8 million lb 5.5 million lb −-1.2 million lb -18.0%
53 Xcel Energy Sherburne County Generating Plant Minnesota 4.5 million lb 3.3 million lb −-1.2 million lb -26.4%
54 Ecw Landfill Corp. Puerto Rico 3.2 million lb 2.0 million lb −-1.2 million lb -36.2%
55 Chemical Waste Management Inc California 5.2 million lb 4.0 million lb −-1.2 million lb -22.3%
56 Hecla Ltd Lucky Friday Mine Unit Idaho 16.3 million lb 15.2 million lb −-1.1 million lb -7.0%
57 San Miguel Electric Cooperative Inc Texas 3.6 million lb 2.4 million lb −-1.1 million lb -31.5%
58 Kennecott Utah Copper Smelter & Refinery Utah 19.2 million lb 18.1 million lb −-1.1 million lb -5.6%
59 Ineos Pigments USA Inc Ohio 2.9 million lb 1.8 million lb −-1.1 million lb -37.1%
60 Oci Beaumont LLC Texas 2.1 million lb 1.1 million lb −-1.1 million lb -49.5%
61 Alabama River Cellulose LLC Alabama 5.7 million lb 4.6 million lb −-1.0 million lb -18.3%
62 Oneok Hydrocarbon LP - Bushton Complex Kansas 3.1 million lb 2.1 million lb −-1.0 million lb -33.4%
63 Pleasants Power Station West Virginia 2.4 million lb 1.4 million lb −-1.0 million lb -42.4%
64 Oneok Rockies Midstream LLC - Grasslands Gas Plant North Dakota 13.9 million lb 13.0 million lb −-961.4 thousand lb -6.9%
65 US Army Garrison-Redstone Alabama 1.1 million lb 174.8 thousand lb −-959.9 thousand lb -84.6%
66 Uss-Clairton Plant Pennsylvania 4.7 million lb 3.8 million lb −-937.9 thousand lb -19.8%
67 Four Corners Steam Electric Station New Mexico 2.5 million lb 1.6 million lb −-933.9 thousand lb -37.1%
68 Inv Nylon Chemicals Americas Orange Site Texas 2.3 million lb 1.4 million lb −-932.3 thousand lb -40.6%
69 American Electric Power H.w. Pirkey Power Plant Texas 1.3 million lb 364.5 thousand lb −-923.6 thousand lb -71.7%
70 Kentucky Utilities Co Ghent Station Kentucky 2.6 million lb 1.7 million lb −-923.2 thousand lb -35.3%
71 Befesa Zinc Metal LLC North Carolina 13.0 million lb 12.1 million lb −-902.9 thousand lb -7.0%
72 Msc Walbridge Coatings Inc Ohio 2.5 million lb 1.6 million lb −-896.5 thousand lb -35.9%
73 Ecovyst Catalyst Technologies LLC Kansas 4.2 million lb 3.3 million lb −-892.8 thousand lb -21.4%
74 Tm Deer Park Services LP Texas 14.5 million lb 13.6 million lb −-884.8 thousand lb -6.1%
75 De Karn Jc Weadock Generating Plant Michigan 1.1 million lb 177.4 thousand lb −-880.3 thousand lb -83.2%
76 Conemaugh Generating Station Pennsylvania 1.5 million lb 573.3 thousand lb −-880.1 thousand lb -60.6%
77 Cleveland-Cliffs Steel Corp /butler Works Pennsylvania 3.3 million lb 2.5 million lb −-866.9 thousand lb -26.0%
78 Choctaw Generation LP L.l.l.p. Mississippi 2.2 million lb 1.4 million lb −-853.8 thousand lb -38.7%
79 Buick Resource Recycling Facility LLC Missouri 4.4 million lb 3.5 million lb −-837.4 thousand lb -19.1%
80 Rockport Plant Indiana 1.6 million lb 787.8 thousand lb −-833.4 thousand lb -51.4%
81 Basf Corp - Freeport Site Texas 2.2 million lb 1.4 million lb −-824.0 thousand lb -37.3%
82 Freeport-McMoran Morenci Inc Arizona 4.9 million lb 4.1 million lb −-815.8 thousand lb -16.6%
83 Montana Resources LLC Montana 40.9 million lb 40.1 million lb −-803.7 thousand lb -2.0%
84 Nystar Gordonsville Mine & Mill Tennessee 3.7 million lb 2.9 million lb −-799.2 thousand lb -21.6%
85 Shell Chemical Appalachia LLC Pennsylvania 1.5 million lb 692.6 thousand lb −-783.4 thousand lb -53.1%
86 Phillips 66 Co-Bayway Refinery New Jersey 3.6 million lb 2.8 million lb −-777.3 thousand lb -21.5%
87 Phillips 66 Co Sweeny Refinery Complex Texas 1.7 million lb 920.9 thousand lb −-766.6 thousand lb -45.4%
88 Maljamar Gas Processing Plant New Mexico 6.0 million lb 5.2 million lb −-753.8 thousand lb -12.6%
89 Clean Harbors Aragonite LLC Utah 3.5 million lb 2.7 million lb −-723.3 thousand lb -20.9%
90 Dte Electric Co-Belle River Power Plant Michigan 2.2 million lb 1.5 million lb −-722.1 thousand lb -32.8%
91 Darling Ingredients Inc.- Linkwood Facility Maryland 1.9 million lb 1.2 million lb −-713.1 thousand lb -38.2%
92 Basf Corp - Beaumont Texas 1.1 million lb 346.6 thousand lb −-708.3 thousand lb -67.1%
93 Freeport-McMoran Bagdad Inc Arizona 4.6 million lb 3.9 million lb −-706.9 thousand lb -15.5%
94 Gibson Generating Station Indiana 3.3 million lb 2.6 million lb −-699.8 thousand lb -21.0%
95 Chemical Waste Management of the Northwest Inc. Oregon 4.8 million lb 4.1 million lb −-694.0 thousand lb -14.4%
96 Kapstone Paper & Packaging Corp South Carolina 1.3 million lb 654.8 thousand lb −-690.2 thousand lb -51.3%
97 Phoenix Paper Wickliffe LLC Kentucky 2.1 million lb 1.5 million lb −-680.1 thousand lb -31.6%
98 Sappi Cloquet LLC Minnesota 1.5 million lb 830.6 thousand lb −-670.6 thousand lb -44.7%
99 Westrock Virginia Corp Virginia 2.7 million lb 2.1 million lb −-669.5 thousand lb -24.4%
100 Associated Electric Cooperative Inc New Madrid Power Plant Missouri 1.9 million lb 1.3 million lb −-667.0 thousand lb -34.7%

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.