Yorke Engineering LLC, founded in 1996, has assisted over 1,800 customers with their Air Quality and Environmental compliance, engineering, and permitting issues. Our philosophy is to efficiently help government and industrial customers with the complex array of environmental rules and regulations issued by local, state, and federal agencies. From simple permits to complex agency negotiations, from small companies to the largest of California’s organizations, Yorke has successfully helped solve our clients’ Air Quality and Environmental issues in a cost-effective and efficient manner.

Our staff of 65 technical specialists has over 1,000 years of combined environmental experience and consists of engineers that specialize in Air Quality, Waste, Water, CEQA, Safety, and Industrial Hygiene.


“Yorke Engineering has played a pivotal role in our air quality compliance program… They have consistently delivered effective, business friendly solutions to our compliance programs.”

EH&S Director
Major Aerospace Company

“They perform their services as if they were employees of my company… We will continue to use their services for our permitting and consulting efforts.”

Construction Company

“We think of Yorke Engineering as an extension of our own environmental management staff as they take ownership of our projects and provide consistent sound strategies for managing those projects.”

Environmental Manager
Energy Company

“Working with Yorke Engineering we have established a program that not only satisfies agency requirements, but also allows us the flexibility to operate our business efficiently.”

Environmental Manager
Major Aerospace Company

Air, Water, Waste, & Safety Environmental Projects

# of Customers

Years of Servicing California

Office Locations in California

Main Office:

31726 Rancho Viejo Rd. Suite 218
San Juan Capistrano, CA 92675

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