Welcome to the home of the Construction Materials Association of California, or “CMAC”, as we’re often called.

CMAC is a non-profit member organization that was formed by the merger of two aggregate associations in 1998. We are the regional voice for aggregates and ready-mixed concrete companies throughout Northern and Central California. Our members also include suppliers and service providers.

Whether you’re visiting for membership information, teaching materials, or to learn how aggregates build the foundations for California’s future while caring for its lands, we hope you enjoy our website and find it useful.

Thanks for dropping by, and please let us hear from you!

Purpose

What Does CMAC Do?

CMAC is the Northern California trade association for aggregate and ready mixed concrete producers, suppliers, and service providers from the Oregon border to Bakersfield. We also:

• Offer extensive information on aggregates to the public, government, teachers and students, business, the media, our members, and other organizations
• Address legislative, regulatory, and environmental issues affecting the industry
• Provide members with safety, technical, sales, and communications training
• Work cooperatively with allied industry groups
• Support K-12 teachers and students by helping the California Mineral Education Foundation provide earth science training workshops and materials to California’s K-12 teachers

Locations

CMAC is headquartered in Sacramento, but a network of 12 chapters enables members to focus on local issues.

CMAC Chapters
Central Coast	Fresno/Madera
Kern	Monterey Bay
North Bay (San Francisco Bay Area)	South Bay (San Francisco Bay Area)
Sacramento	San Joaquin
Shasta	Stanislaus-Merced
Tulare-Kings	Yolo