California Codes, Business and Professions Code - BPC, Division 3 — Professions and Vocations Generally, Chapter 7 — Professional Engineers, Article 3 — Application of Chapter, Section 6734
Any person practices civil engineering when he professes to be a civil engineer or is in responsible charge of civil engineering work.
Notes
Defines a person as practicing civil engineering when the person professes to be a civil engineer or is in responsible charge of civil-engineering work. Either holding oneself out as a civil engineer or exercising responsible charge over civil-engineering work is sufficient under the provision to constitute civil-engineering practice.
Use as reference
Lexinter.net | California Code, Business and Professions Code - BPC § 6734 | https://laws.lexinter.net/codes/california/business-and-professions-code/division-3/chapter-7/article-3/section-6734