Pollution in Monterey County, California

Monterey County contains 224 EPA-regulated facilities, 6 of which are currently flagged for significant noncompliance. The county also hosts 2 Superfund sites and 5 TRI chemical reporters. EPA has assessed $12.4M in lifetime penalties and TRI reporters disclosed roughly 24.5k lb of on-site releases. That facility count is well above the California state average of 108 per county.

Superfund2NPL sites
TRI Facilities5reporters
EPA Facilities224regulated
Sig. Violators6current SNC

Superfund sites

SiteCityStatus
Fort OrdMarinaCleanup underway
Crazy Horse Sanitary LandfillSalinasListed on NPL

Largest releasers

FacilityCityOn-site (lb)Status
Us Army Garrison Fort Hunter Liggett RangesJolon23.3kCompliant
Lhoist North AmericaSalinas1.1kCompliant
Ultra Pure Solutions IncCastroville55Compliant

Significant violators

FacilityCityPenaltiesLast Inspected
Mariposa Energy, LlcLivermore$209.0k2025-04-09
Granite Rock WilsonAromas$78.0k2025-10-17
Firestone Business Park Ws$0
Murphy Hill Ws #02$0
Pajaro Valley Greenhouse Ws-Drinking Fountain 02 (Poe)Salinas$0
Arroyo Seco Estates MwsSoledad$0