Article 2 - Areas Designated to be of Regional Significance
- Section 3550 - Introduction
- Section 3550.1 - Tujunga and Pacoima Wash Areas of the San Fernando Valley Region, Los Angeles County
- Section 3550.2 - Santa Clara River Valley Area of the Western Ventura County Region, Ventura County
- Section 3550.3 - Simi Valley Area of the Simi Region, Ventura County
- Section 3550.4 - Santa Ana River, Santiago Creek, Arroyo Trabuco, San Juan Creek, and Temescal Valley Areas of the Orange County-Temescal Valley Region, Orange, Riverside, and San Bernardino Counties
- Section 3550.5 - San Gabriel River, Eaton Wash, Devils Gate, and Palos Verdes Areas of the San Gabriel Valley Region, los Angeles County
- Section 3550.6 - Construction Aggregate Resources, Western San Diego County Region
- Section 3550.7 - Construction Aggregate Resources, Claremont-Upland Region
- Section 3550.8 - Construction Aggregate Resources, San Bernadino Region
- Section 3550.9 - Construction Aggregate Resources, Saugus-Newhall and Palmdale Regions
- Section 3550.10 - Construction Aggregate Resources, South San Francisco Bay Region
- Section 3550.11 - Construction Aggregate Resources, North San Francisco Bay Region
- Section 3550.12 - Construction Aggregate Resources, Monterey Bay Region
- Section 3550.13 - Construction Aggregate Resources, Fresno Production-Consumption Region
- Section 3550.14 - Construction Aggregate Resources, Stockton-Lodi Production-Construction Region
- Section 3550.15 - Construction Aggregate Resources, Palm Springs Production-Consumption Region
- Section 3550.16 - Construction Aggregates Resources, Bakersfield Production-Consumption Region
- Section 3550.17 - Construction Aggregate Resources, San Luis Obispo - Santa Barbara Production-Consumption Region