Section 4906

shall be selected to reduce non-fire-resistant vegetation in prox- imity to a structure and to maintain vegetation as it matures.

Responsibility Areas (SRA) and Local Responsibility Areas (LRA) designated as a Very High Fire Hazard Severity Zone shall comply with Sections 4906.3 through 4906.5.3.

when required by the enforcing agency. The landscape plan shall include development and maintenance requirements for the vegetation management zone adjacent to structures and roadways, and to provide significant fire hazard reduction benefits for public and firefighting safety.

4906.3.1 Contents . Landscape plans shall contain the following:

1. Delineation of the 30-foot (9144 mm) and 100-foot (30.5 m) fuel management zones from all structures.

2. Identification of existing vegetation to remain and proposed new vegetation.

3. Identification of irrigated areas.

4. A plant legend with both botanical and common names, and identification of all plant material sym- bols.

5. Identification of ground coverings within the 30-foot (9144 mm) zone.

vegetation in accordance with this section.

Exception: Trees classified as non-fire-resistant vegeta- tion complying with Section 4906.4.2.1.

To be considered fire-resistant vegetation, it must meet at least one of the following:

1. Be identified as fire-resistant vegetation in an approved book, journal or listing from an approved organization.

2. Be identified as fire-resistant vegetation by a licensed landscape architect with supporting justification.

3. Plants considered fire-resistant vegetation and approved by the local enforcing agency.

4906.4.1 Shrubs . All new plantings of shrubs shall comply with the following:

1. Shrubs shall not exceed 6 feet (1829 mm) in height.

2. Groupings of shrubs are limited to a maximum aggregate diameter of 10 feet (3048 mm).

3. Shrub groupings shall be separated from other groupings a minimum of 15 feet (4572 mm).

4. Shrub groupings shall be separated from structures a minimum of 30 feet (9144 mm).

5. Where shrubs are located below or within a tree’s drip line, the lowest tree branch shall be a minimum of three times the height of the understory shrubs or 10 feet (3048 mm), whichever is greater.

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REQUIREMENTS FOR WILDLAND-URBAN INTERFACE FIRE AREAS

4906.4.2 Trees . Trees shall be managed as follows within the 30-foot (9144 mm) zone of a structure:

1. New trees shall be planted and maintained so that the tree’s drip line at maturity is a minimum of 10 feet (3048 mm) from any combustible structure.

2. The horizontal distance between crowns of new trees and crowns of adjacent trees shall not be less than 10 feet (3048 mm).

3. Existing trees shall be trimmed to provide a mini- mum separation of 10 feet (3048 mm) away from chimney and stovepipe outlets per Title 14, Section 1299.03.

4906.4.2.1 Non-fire-resistant vegetation. New trees not classified as fire-resistant vegetation, such as conifers, palms, pepper trees and eucalyptus species, shall be permitted provided the tree is planted and maintained so that the tree’s drip line at maturity is a minimum 30 feet (9144 mm) from any combustible structure.