Consulting Services

Ashworth Leininger Group was formed to offer expert air quality and environmental consulting services to a broad spectrum of clients - industry, trade associations, and agencies.  For over 20 years, our firm has provided client-focused, cost effective, and resourceful solutions in support of our clients environmental management programs, regulatory advocacy, and corporate growth objectives.  

We provide services covering a wide range of environmental matters as further described below.


ALG routinely assists major source facilities on local, state, and federal operating permit and compliance.

Hazardous Waste - Materials

ALG partners with clients to manage hazardous water and hazardous materials compliance programs.


ALG staff include IGP certified QISP, ToR, and licensed P.E. to assist with water compliance.


ALG has a broad experience working with public agencies, applicants, and legal counsel to address both CEQA and NEPA issues

Greenhouse Gas and LCFS

ALG is a CARB accredited verification body with Lead Verifiers certified in all sectors

Litigation Support

ALG's principals have been admitted as expert witnesses and supported legal counsel in complex litigation matters.

Health Risk Modeling

ALG conducts HRAs in support of CEQA and AB2588 programs in addition to other regulatory requirements.

Environmental Sustainability

ALG provides cost effective and innovative project management.