Cal. Health and Safety Code § 12001

This part does not apply to any of the following: (a) Any person engaged in the transportation of explosives regulated by, and when subject to, the provisions of Division 14 (commencing with Section 31600) of the Vehicle Code. (b) Small arms ammunition of .75 caliber or less when designated as a division 1.4 explosive by the United States Department of Transportation. (c) Fireworks regulated under Part 2 (commencing with Section 12500) of this division, including, but not limited to, special effects pyrotechnics regulated by the State Fire Marshal pursuant to Section 12555. (d) Any explosives while in the course of transportation via railroad, aircraft, water, or highway when the explosives are in actual movement and under the jurisdiction of and in conformity with regulations adopted by the United States Department of Transportation, United States Coast Guard, or the Federal Aviation Agency. However, no explosives shall be sold, given away, or delivered except as provided in Section 12120. (e) Special fireworks classified by the United States Department of Transportation as division 1.3 explosives when those special fireworks are regulated under Part 2 (commencing with Section 12500) of this division, when a permit has been issued pursuant to regulations of the State Fire Marshal. (f) (1) Black powder in quantities of 25 pounds or less in the hands of a retailer having a permit issued under Article 2 (commencing with Section 6066) of Chapter 2 of Part 1 of Division 2 of the Revenue and Taxation Code and in quantities of five pounds or less in the hands of all others and smokeless powder in quantities of 20 pounds or less used, possessed, stored, sold, or transported that is exempted under, or authorized by, the Federal Organized Crime Control Act of 1970 (Public Law 91-452) and applicable federal regulations thereunder. (2) All cities, counties, and special districts and county service areas providing fire protection shall require retailers in possession of black powder to notify fire authorities.