EPA TRI Chemical

Silver and Silver Compounds

EPA TRI Category Code: N740

Total releases
2.5M lbs
Number of facilities
69
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, Silver and Silver Compounds (EPA TRI Category Code N740) is disclosed by 69 Form R facilities totaling 2.5M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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Silver and Silver Compounds (EPA TRI Category Code N740) is a chemical tracked by the EPA Toxics Release Inventory (TRI) program under Section 313 of the Emergency Planning and Community Right-to-Know Act. The TRI requires industrial facilities above specified threshold quantities to disclose annual manufacturing, processing, and otherwise-used volumes, along with quantities released to air, water, land, and off-site transfers.

A carcinogen flag, when present on other chemicals in this database, reflects an assessment from EPA, IARC, or the National Toxicology Program rather than a TRI-specific determination. The largest individual disclosure in the current dataset comes from CLEAN HARBORS ARAGONITE LLC in UT at 722.3K lbs.

TRI volumes are self-reported estimates, not measured stack emissions, and each pound counts equally regardless of chemical toxicity, so total pounds should not be equated with total risk. Inclusion of a chemical or facility in the TRI does not itself establish a health hazard; it documents the public right-to-know record. Consult EPA's IRIS (Integrated Risk Information System) and the Agency for Toxic Substances and Disease Registry for health-effect summaries.

LAND pathway mix

Silver and Silver Compounds: how the 2.5M lbs splits

2.5M lbs across all reported pathways

  • Land Disposal2.0M lbs78.5%
  • Off-site Transfers472.6K lbs19.0%
  • Air Releases59.3K lbs2.4%
  • Water Discharges3.0K lbs0.1%

Silver and Silver Compounds's 2.5M lbs Form-R total is LAND, with land disposal making up 78.5% of the bar. Next segment: off-site transfers at 19.0%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Silver and Silver Compounds releases across all reporting facilities increased by 88% (316.2K lbs → 593.7K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Silver and Silver Compounds is concentrated: Utah accounts for 33.2% of the reported total (5 facilities). Next: Arkansas.

  • Utah 826.9K lbs
  • Arkansas 675.3K lbs
  • Nevada 351.4K lbs
  • Texas 302.8K lbs
  • Illinois 94.1K lbs
Industry Sources

Reporting for Silver and Silver Compounds is highly concentrated by industry: Hazardous Waste facilities account for 80.9% of the reported total (10 facilities). Next: Metal Mining.

  • Hazardous Waste 2.0M lbs
  • Metal Mining 363.6K lbs
  • Chemicals 45.7K lbs
  • Primary Metals 34.6K lbs
  • Transportation Equipment 14.4K lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of Silver and Silver Compounds. Up to 50 shown.

# Facility Release (lbs)
1 Clean Harbors Aragonite LLC
722.3K lbs
2 Clean Harbors el Dorado LLC
675.3K lbs
3 Smoky Valley Common Operation
326.4K lbs
4 Clean Harbors Deer Park LLC
302.2K lbs
5 Veolia N.a. Inc.
93.9K lbs
6 Clean Harbors Grassy Mountain LLC
89.4K lbs
7 Ross Incineration Services Inc
64.5K lbs
8 Shell Chemical LP - Martinez Catalyst Plant
39.2K lbs
9 Wayne Disposal Inc
26.8K lbs
10 Nevada Gold Mines LLC - Turquoise Ridge
24.3K lbs
11 Reworld Tron Corp
24.1K lbs
12 Veolia Es Technical Solutions L.L.C.
15.6K lbs
13 Gentex Corp Automotive Div
14.4K lbs
14 Freeport-McMoran Miami Inc
13.8K lbs
15 Eq Detroit Inc
13.8K lbs
16 Kennecott Utah Copper Smelter & Refinery
12.8K lbs
17 U.S. Silver - Idaho Inc
11.2K lbs
18 Rochester Silver Works LLC
7.9K lbs
19 Carestream Health Colorado
4.8K lbs
20 Asahi Refining USA Inc
1.3K lbs
21 Guardian Industries - Carleton
1.3K lbs
22 Kennecott Utah Copper Mine Concentrators & Power Plant
1.0K lbs
23 Eastman Kodak Co Eastman Business Park
832 lbs
24 Coeur Rochester Inc
610 lbs
25 Stratford Metal Finishing Inc
500 lbs
26 Carestream Health Inc
301 lbs
27 Union Carbide Corp Institute Facility
251 lbs
28 Phelps Dodge Copper Products Co
250 lbs
29 Alpha Assembly Solutions
213 lbs
30 Checon LLC
196 lbs
31 Eastman Chemical Co Texas Operations
171 lbs
32 Colt Refining Inc
160 lbs
33 Parker Hannifin Corp Chomerics Div
159 lbs
34 Ames Goldsmith Corp
153 lbs
35 Celanese Microcircuits Industries Ltd.
138 lbs
36 Asarco LLC Amarillo Copper Refinery
126 lbs
37 Energizer Manufacturing Inc
123 lbs
38 Catalyst Refiners Inc
114 lbs
39 Precision Plating Co Inc
96 lbs
40 Basf Corp
82 lbs
41 Calumet Electronics Corp
75 lbs
42 Perfection Plating Inc
74 lbs
43 Ames Advanced Materials Corp
67 lbs
44 Asahi Refining Florida LLC
47 lbs
45 Storm Power Components
42 lbs
46 Materion Advanced Materials Technologies & Services North
40 lbs
47 Gulf Coast Growth Ventures LLC
40 lbs
48 Technic Inc Engineered Powders Div
32 lbs
49 Metalor Technologies USA Corp Refining Div
30 lbs
50 Sauquoit Ind LLC / Noble Biomaterials
22 lbs

Frequently Asked Questions

What is Silver and Silver Compounds in the EPA TRI?
Silver and Silver Compounds (EPA TRI Category Code: N740) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 69 facilities in the United States report releasing this chemical to the EPA.
How much Silver and Silver Compounds is disclosed in U.S. TRI filings?
U.S. facilities have reported a total of 2.5M lbs of Silver and Silver Compounds releases to the EPA Toxic Release Inventory across 69 facilities. Release quantities are self-reported estimates covering air, water, land, and off-site transfers. They are disclosure totals, not toxicity-weighted harm scores.
How does EPA TRI classify Silver and Silver Compounds?
Silver and Silver Compounds is not marked as a carcinogen in the TRI classification set. TRI classification flags document inventory listing status; they are not a site-specific exposure or health diagnosis. For health-effect summaries see EPA IRIS and ATSDR toxicological profiles.
Which facilities disclose the most Silver and Silver Compounds?
Clean Harbors Aragonite LLC in UT reports the largest disclosed release of Silver and Silver Compounds in this dataset, at 722.3K lbs. Most reporting facilities for this chemical fall under hazardous waste. Release data is self-reported annually to the EPA under the TRI program. View the full list of 69 facilities on this page.
Why is Silver and Silver Compounds listed under code N740 instead of a CAS number?
N740 is an EPA TRI Category Code, not a CAS Registry Number. EPA assigns category codes (N-prefix and K-prefix) to chemical groups that share reporting requirements, for example, "Silver and Silver Compounds" covers many distinct compounds aggregated for TRI reporting. Individual constituents may have their own CAS Registry Numbers (e.g., elemental Lead is CAS 7439-92-1), but the group is reported under the single TRI Category Code.

Health Information

Data comes from the EPA Toxic Release Inventory (TRI) program. Release quantities are self-reported by facilities and may represent estimates. The total shown aggregates reports across all facilities and reporting years.

PlainEnviro presents this data without advocacy framing. The presence of a chemical in the TRI database does not by itself indicate a health risk at current exposure levels. For health-related questions about specific chemical exposures, consult your local health agency or a toxicologist.

Related

Data sourced from the U.S. Environmental Protection Agency (EPA). See our methodology for details. Retrieved and formatted by PlainEnviro

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the EPA Toxic Release Inventory (TRI). Consult a qualified professional before making decisions based on this data.