Chapter 17.68
GEOLOGICAL HAZARDS Revised 6/18

Sections:

17.68.010    Purpose and applicability. Revised 6/18

17.68.020    Geologic/engineering report. Revised 6/18

17.68.030    Shoreline protection measures. Revised 6/18

17.68.040    Development in bluff and cliff areas. Revised 6/18

17.68.010 Purpose and applicability. Revised 6/18

This chapter establishes standards for development in areas with geological hazards, including beach, shoreline, and bluff areas. (Ord. 1017 § 2 (Exh. A) (part), 2018)

17.68.020 Geologic/engineering report. Revised 6/18

A. When Required. A geologic/engineering report shall be prepared for the following:

1. Developments located on a beach, including shoreline protective measures. “Shoreline protective measures” includes the installation of any structure or material for the purpose of protecting a structure, road, utility or transmission line in an area where coastal processes operate. Shoreline protective measures include but are not limited to riprap or a seawall.

2. Any blufftop or cliff development which is proposed within two hundred feet of the cliff edge. In specific areas of known geological stability or where adequate protective devices already exist, a smaller area of analysis may be designated. The city may designate a greater area of analysis or exclude development entirely in areas of known high instability.

3. In areas determined by the community development director, the public works director, the building inspector, or the planning commission to have a landslide potential.

4. Any development built on a slope in excess of thirty percent.

5. Other areas with potential geologic hazards as determined by the planning commission.

B. Contents of Geologic/Engineering Reports.

1. All geologic/engineering reports shall be prepared according to the guidelines for practice issued by the California Geological Survey, and Coastal Commission Guidelines for Bluff Top Development.

2. Geological/engineering reports shall be prepared by a registered geologist or professional engineer with expertise in soils or foundations engineering, or by a certified engineering geologist.

C. Expert Review. The city may employ, at the applicant’s expense, an appropriate expert to evaluate the adequacy of the report.

D. Report Noted on Subdivision Maps. All geologic/engineering reports prepared in conjunction with an application to subdivide property shall be noted on the map as provided in Government Code Section 66434(f). (Ord. 1017 § 2 (Exh. A) (part), 2018)

17.68.030 Shoreline protection measures. Revised 6/18

A. Primary Structures. Shoreline protection structures may be permitted only when necessary to protect existing development other than accessory structures.

B. Beach Erosion. Shoreline protection structures may be permitted to protect public beaches in danger from erosion only when:

1. Nonstructural solutions (e.g., artificial beach nourishment, relocation of structures) are infeasible;

2. Structure design eliminates or mitigates adverse impacts on local shoreline sand supply, public access, marine habitats and paleontological resources; and

3. Vertical beach access is provided where feasible. (Ord. 1017 § 2 (Exh. A) (part), 2018)

17.68.040 Development in bluff and cliff areas. Revised 6/18

A. Permitted Location. Bluff and cliff top development is permitted only when the development is designed to assure stability and structural integrity for the expected life of the project (at least fifty years).

B. Prohibited Impacts. Cliff top development, including storm runoff, foot traffic, grading, and irrigation, may not create nor contribute significantly to erosion problems or geological instability of the site or surrounding areas. (Ord. 1017 § 2 (Exh. A) (part), 2018)