Chapter 17 — 84D. CALIFORNIA COASTAL ZONE RESOURCE PROTECTION PROCEDURES PROTECTION OF…

This chapter implements applicable provisions of the local coastal program for ensuring the protection of soil resources by providing standards for the review, authorization, and conditioning of new development and land uses consistent with the requirements of the California Coastal Act.

(Ord. of 2-22-2011(1))

The provisions of this chapter apply to the review of coastal development permit applications for all development as follows:

• A. Soil Resources. The policies and standards of sub-sections 17.84D.030.A, 17.84.040.A, and 17.84D.050.A, relating to the protection and conservation of soil resources, shall apply to all developments and uses which involve grading, excavation, filling, or other significant ground disturbances.

• (Ord. of 2-22-2011(1))

• A. Grading. Permit applications shall be filed with the department on a city-approved application form, together with all fees, plans, maps, reports, and other information prepared as required by the coastal grading permit application preparation and contents instruction list provided by the department. The plans and reports submitted with the application shall include, but not be limited to, the following, where required by the county engineer:

  1. A grading plan;

  2. A drainage plan with hydrology and hydraulic calculations;

  3. A geotechnical investigation prepared pursuant to Section 17.84G.030 , where the potential for seismically induced soil liquefaction and soil instability is present. When the following conditions are discovered during the course of an investigation, the geotechnical report shall address the potential for liquefaction:

     • a. Shallow groundwater, fifty feet or less; and

     • b. Unconsolidated sandy alluvium. The report shall identify measures to mitigate the liquefaction and soil instability hazards associated with the proposed development;

  4. A runoff mitigation plan (see Section 17.84B.030 (pre- and post-construction stormwater runoff plan requirements));

  5. Any special reports (e.g., compaction, geotechnical, soils, etc.) required by the city engineer.

The preparation of grading permit applications shall also comply with the provisions of Title 15 (Buildings and Construction) of the municipal code.

• (Ord. of 2-22-2011(1))

In addition to the findings for approval or conditional approval of a coastal development permit as required by Section 17.84.033 , the following supplementary findings, based on factual evidence, shall be made for new development or uses involving the disturbance of soil resources:

• A. General. All development conforms to the development standards set forth in Section 17.84D.050 . (Ord. of 2-22-2011(1))

Development of all structural improvements and uses involving the disturbance of soils shall be subject to the following standards:

• A. The siting and design of all buildings shall limit grading, excavations, and filling to that minimally necessary to feasibly construct the improvements.

• B. The siting and design of roads and driveways shall be the minimum width and length necessary to avoid unnecessary cut and fill, particularly by conforming to natural landforms.

• C. Unless deemed unsuitable by a licensed landscape architect or civil engineer, "O" and "A" horizon topsoil materials shall be scraped, appropriately stockpiled, and reused in site landscaping.

• (Ord. of 2-22-2011(1))