TRI Reporter Clean Water Act

MANH CHOH MINE DEVELOPMENT

Quick Summary

•Released 945 lbs of toxic chemicals to the environment in the most recent TRI reporting year.
•Assessed $0 in total penalties since records began.
•Reports releases of chemicals classified as known or probable carcinogens.

Address: ALASKA HIGHWAY
TOK, AK 99780
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County: SOUTHEAST FAIRBANKS (CA) County
Industry: Mining, Quarrying, and Oil and Gas Extraction
NAICS (North American Industry Classification): 212220
Total Penalties: $0
Registry ID: 110071428260

How This Compares

#34 of 51 TRI reporters in AK

#425 of 555 TRI reporters in Mining, Quarrying, and Oil and Gas Extraction

Ranked by most recent year's total TRI releases.

TRI Toxic Chemical Releases

Annual pounds of each toxic chemical released to air, water, and land, as reported to the EPA Toxic Release Inventory. Carcinogen (♦) and PFAS designations are per EPA and IARC classifications.

Emissions Trend (2023–2024) +232% overall

Year	Total Releases (lbs)	vs Prior Year
2023	285	—
2024	945	+232%

2024

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Ammonia	602	570	—	32	—
1,2,4-Trimethylbenzene	217	217	—	—	—
n-Hexane	66	66	—	—	—
Arsenic compounds	41	41	—	—	—	♦ Carcinogen
Cobalt compounds	19	19	—	—	—	♦ Carcinogen

2023

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Arsenic compounds	—	—	—	—	—	♦ Carcinogen
Cobalt compounds	—	—	—	—	—	♦ Carcinogen
Lead	285	—	—	285	—	♦ Carcinogen

Waste Management & Recycling

How this facility manages toxic chemicals beyond direct releases — through recycling, energy recovery, and on-site or off-site treatment. Data from the most recent TRI reporting year. Quantities in pounds.

Chemical	Released	Recycled	Energy Recovery	Treated