Cal. Pub. Resources Code § 33105
"Zone" means the Santa Monica Mountains Zone, which includes that part of the land area of the greater Los Angeles metropolitan region, landward of the Pacific Coast Highway (State Highway Route 1) bounded by Calleguas Creek, thence following Calleguas Creek northward to its intersection with the corporate boundary of Camarillo, thence following the southern boundary of the City of Camarillo eastward until it intersects the Ventura Freeway (State Highway Route 101), thence following the Ventura Freeway eastward to a point of intersection with the western boundary of the Malibu Creek Watershed. The northern boundary continues thence along the boundary of the Watershed to its intersection again with the Ventura Freeway on the east; thence eastward along this freeway to its intersection with the corporate boundary of the City of Los Angeles, thence continuing on a line drawn one-quarter of a mile south of the Ventura Freeway to its intersection with Ventura Boulevard and continuing on a line one-quarter mile south from Ventura Boulevard eastward to its intersection with Sepulveda Boulevard; thence continuing eastward along Valley Vista Boulevard to its intersection with Dixie Canyon Avenue and from this point continuing eastward on a line one-quarter mile south of Ventura Boulevard to its intersection with a linear projection of Lankershim Boulevard and thence northeasterly on this projection and continuing on Lankershim Boulevard to its intersection with Cahuenga Boulevard, thence east along Cahuenga Boulevard to its intersection with a linear projection of Barham Boulevard, and hence northeasterly along such projection and continuing upon Barham Boulevard to its intersection with the Los Angeles River, and eastward along the south bank of the Los Angeles River to its intersection with the boundary of Griffith Park, including Griffith Park, and thence following a direct line drawn southwest from the southernmost boundary point of Griffith Park to the intersection of Sunset Boulevard with the corporate boundary of the City of Los Angeles near the intersection of Sunset Boulevard and Marmount Lane, thence continuing westward following the Los Angeles corporate boundary to its intersection with the boundary of the City of Beverly Hills, thence following the northern boundary of the City of Beverly Hills until it returns to Sunset Boulevard, thence following Sunset Boulevard westward to its point of intersection with the Pacific Coast Highway (State Highway Route 1).
The zone shall also include Elysian Park and El Pueblo de Los Angeles State Historic Park and, for purposes of providing a recreational trail corridor, it shall also include hiking and equestrian trail connections and accessways between Griffith Park, Elysian Park, and El Pueblo de Los Angeles State Historic Park.
Ca. Pub. Res. Code § 33105