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Level 1 Alert lasting longer than 20 minutes or with odors
Notification Only - Flaring incident at Phillips 66 Rodeo that may be seen by the surrounding community.
December 5, 2023, 4:36 pm

RMP - Matheson Tri-Gas, Inc.

(formerly Air Liquide)

Martinez, CA

Matheson Tri-Gas has been de-registered as of Dec 8, 2020 and is no longer in the CalARP program.

The facility is located on Solano Way in Martinez, CA. The facility manufactures liquid carbon dioxide, dry ice blocks, and dry ice pellets that are transported and distributed from this site. The CalARP regulated substance is anhydrous ammonia. A stationary ammonia refrigeration system is used for liquefying and solidifying carbon dioxide, with plant areas operating at various temperatures.

For additional information regarding this facility's operations and most recent audit results, please view the Audit Summary | Spanish.

Regulated Substances Subject to the RMP/CalARP/ISO:
Regulated Substance Program Level CalARP Regulated Federal RMP Regulated ISO Regulated
Anhydrous Ammonia 2 yes no no