Where a drain inlet trap is provided, it shall be individually vented with a vent pipe of not less than two (2) inches interior diameter unless the system is a wet vented system as provided in section 2264 of this article.
Cal. Code Regs. Tit. 25, § 2260
Note: Authority cited: Section 18865, Health and Safety Code. Reference: Section 18873.1, Health and Safety Code.