about us

We pride ourselves on being a Full-Service company that perform a wide range of environmental and hazardous materials services. We offer comprehensive solutions from investigation and assessment

to treatment and complete remediation.  


We offer our services in many states including CA, WY, MT, Idaho and the Dakotas.

Our main office is located in Chico, CA and field office strategically located in Pinedale, WY.

We work as a TEAM with our Clients, their insurance company (if applicable) and with government agencies at all levels. Hence the company name “Alliance”.

california asbestos removal


california asbestos removal

William Irwin, President and Company Operations Manager has over 30 years’ experience in the Hazardous Materials and Environmental Field. He possess many certifications including a Hazardous Materials Management Degree from University of CA, Davis (1995).

William and his wife of 30 years, Elaine, have operated their company for 22 years now.

William grew up in Pinedale, WY moving to CA at the age of 21 to pursue a career in HazMat Management. As a young adult he worked hands on in the oil & gas gathering industry in WY and MT. He is very familiar with the energy industry.

california asbestos removal
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environmental services california

Serving Northern California, Utah, Idaho, Montana, and Wyoming for over 35 years.


  • ISNetworld Certified Contractor #400-191847 Since 2012

  • CA Certified Asbestos Consultant Cert #13-5161

  • CA Licensed Contractor #776274 (General A Engineering, HAZ, ASB, C-21/Demolition, C-22/Asbestos)

  • Gold Shovel Standard Certified Since 2016

  • State of CA, Dept. of Industrial Relations,

  • Asbestos Remediation Certified #1090

  • EPA Accredited Lead Safety

  • EPA/HUD Renovator Cert. #R-I-18717-10-01004

  • Drug and Alcohol Policy Audit Certified by National Compliance Management Services

  • Certified Mold Inspector/Remediator by NAMP (National Association of Mold Professionals) Since 2003

  • CA Dept. of Public Health Certified Lead Supervisor

  • US EPA-Brownsfield Road Map to Understanding Options for Site Investigation and Clean Up

  • US EPA- Best Management Practices for Site Assessment, Remediation and Greener Clean Ups


  • Duns Registered #944020198

  • Systems for Award Management

  • Valley Contractors Exchange Member

  • North Valley Property Owners Association

  • Sierra North Valley Realtors Association

  • Chico, CA Chamber of Commerce member

  • Sublette County, WY Chamber of Commerce member

"We go where you need us...when you need us"