Experience & Technology

Over 25 years in the Environmental / Industrial Hygiene Field. At Monte Deignan, we take pride in delivering high quality surveys, focusing on efficiency, quality, and safety. We use the state of the art lab services for the analysis of samples and materials. At Monte Deignan, we're continually finding the best new technology. All labs are fully accredited in each of their respective fields.

Quality & Reliability

Our reports and surveys need to be communication tool for the clients and contractors.  At MDA we provide CAD drawings and sampling plans with graphic data sheets to fully describe the scope of work. It's old fashioned now, but we do what we say we're going to do. Plain and simple. Our word is bond, and that applies to our deadlines, as well. No one has ever complained that we had too much integrity.


When you have a serious project that needs to be done, look no further than Monte Deignan & Associates,  an experienced provider of asbestos and lead consulting serving Northern California. We innovate. We deliver. 

Monte Deignan and Associates was founded in 1988 by our current owner, Monte Deignan. In the last quarter of a century a lot has changed – technology, governments, world economies, the materials we use in our daily lives. But, one thing remains unchanged – our dedication to doing the best work in the world. We keep an old fashioned attitude about work, and that's that it needs to be done when we promised. More and more, that means relying on brilliant consultants and hardworking Abatement contractors working in tandem.