Company Certifications

As a small, woman-owned firm, Cogstone can assist prime contractors and agencies to achieve disadvantaged business participation goals. We are certified with major federal, state and local programs. Our primary NAICS codes are 541620 (Environmental Consulting), 541690 (Other Scientific and Technical Consulting), 541720 (Research and Development in the Social Sciences and Humanities), and 541990 (All Other Professional, Scientific, and Technical Services). Further, key personnel are certified in all municipalities throughout California that maintain lists.


Woman-Owned Small Business
Small Disadvantaged Business
Economically Disadvantaged Woman-Owned Business

cupcCalifornia Unified Certification Program

Disadvantaged Business Enterprise
Underutilized Disadvantaged Business Enterprise

cpucCalifornia Public Utilities Commission

Women-Owned Business Enterprise

DGSCalifornia Department of General Services

Small Business

lametro-logoLos Angeles County Metropolitan Transit Authority

Small Business Enterprise


Small Business Enterprise

sandagSANDAG Bench (A&E | CM)

Small Business Enterprise
Disadvantaged Business Enterprise

mwdMetropolitan Water District

Small Business Enterprise

pola-polb-logosPort of Long Beach | Port of Los Angeles

Small Business Enterprise
Very Small Business Enterprise

county-LACounty of Los Angeles

Certified Local Business
Small Business Enterprise
Disadvantaged Business Enterprise

Certified ContractorCertified Contractor

Certified Contractor

The Gold Shovel Standard is a first-of-its kind excavation safety program designed to reduce dig-ins and protect the underground gas and electric system. With safety as its highest priority, the Gold Shovel Standard Certification process was developed to ensure that hired contractors are vetted annually and adhere to the safest excavation standards. For more information, visit