Jason W. Muir, PE, GE – Environmental Manager

Jason Muir
Jason Muir

Jason W. Muir, PE, GE, is a principal of Holdrege & Kull and manager of the Environmental Division. He has been in the industry and with the firm for 21 years. Mr. Muir and his team have performed more than 500 Phase I/II environmental site assessments for municipal, commercial, residential, and transportation improvement projects, characterizing and mitigating environmental conditions such as leaky Underground Storage Tanks (USTs), lead-containing paint (LCP), naturally occurring asbestos (NOA), aerially deposited lead (ADL), pesticide releases, and unpermitted disposal sites pursuant to local, state, and federal guidelines.


  • M.S. in Environmental Engineering, U.C. Berkeley
  • B.A. in Environmental Science, U.C. Berkeley


  • Professional Engineer, CA No. 60167
  • Geotechnical Engineer, CA No. 2697


  • Phase I/II site assessment
  • Preliminary Endangerment Assessment (PEA)
  • Soil, soil vapor, and groundwater remediation
  • Human health and ecological risk assessment
  • Contaminant transport modeling
  • Geotechnical investigation and design


  • Geoprofessional Business Association
  • American Society of Civil Engineers
  • Association of Drilled Shaft Contractors
  • Engineer’s Association of Nevada County
  • Placer Architects, Geologists, Engineers, and Surveyors
  • California Abandoned Mine Land Forum