Location Served

Western US

The Western United States is home to a diverse range of environmental challenges, from petroleum and chemical contamination in urban areas to complex remediation needs in remote, rugged terrain. Regulatory requirements vary widely between states, making local expertise essential for efficient, compliant cleanup.

Challenges We Solve in the Western US

  • Petroleum and chemical spills on active industrial or commercial sites
  • Groundwater contamination impacting agricultural and municipal water supplies
  • PFAS remediation in areas with heightened state-level regulations
  • Brownfield redevelopment in rapidly growing urban centers
  • Remote site remediation requiring specialized mobilization strategies

How AST Environmental Helps

We bring proven remediation technologies and field-tested expertise to projects across the Western US, from coastal cities to remote desert sites. Key services include:

States & Key Service Areas in the Western US

  • Hawaii – Honolulu, Hilo, Kailua, Lahaina
  • Arizona – Phoenix, Tucson, Mesa, Flagstaff
  • California – Los Angeles, San Diego, San Francisco, Sacramento, Fresno
  • Colorado – Denver, Colorado Springs, Fort Collins, Grand Junction
  • Idaho – Boise, Idaho Falls, Coeur d’Alene, Twin Falls
  • Montana – Billings, Missoula, Great Falls, Bozeman
  • Nevada – Las Vegas, Reno, Carson City, Henderson
  • New Mexico – Albuquerque, Santa Fe, Las Cruces, Roswell
  • Oregon – Portland, Eugene, Salem, Bend
  • Utah – Salt Lake City, Provo, Ogden, St. George
  • Washington – Seattle, Spokane, Tacoma, Vancouver
  • Wyoming – Cheyenne, Casper, Laramie, Gillette
  • Alaska – Anchorage, Fairbanks, Juneau, Ketchikan

Colorado Office – Western Region Contact

For projects in Colorado and surrounding Western states, contact our regional representative:

Mike Mazzarese
(303) 880-4714
mmazzarese@astenv.com

Compliance & Regulatory Expertise

Our team works within each state’s unique environmental framework, from California’s strict remediation standards to the varied permitting processes in other Western states. We ensure that every project meets or exceeds local, state, and federal regulations while staying on schedule.

Ready to Clean Up Your Site?

We’ve helped consultants, regulators, and site owners across the country achieve cleanup goals faster, safer, and more cost-effectively — and we can do the same for you.

Let’s talk through your site and see if in-situ remediation is a fit.

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