22.44.2180

Development in areas adjacent to sensitive marine and beach habitats shall be sited and designed to prevent impacts that could significantly degrade the environmentally sensitive habitats.

Lagoon breaching or water level modification shall not be permitted, unless it can be demonstrated that there is a health or safety emergency.

Siting and design of new shoreline development and shoreline protective devices shall take into account anticipated future changes in sea level.

Based on information gathered over time, the County shall develop additional policies and other actions for inclusion in the LCP, as appropriate, to address the impacts of sea level rise.

Ancillary structures such as decks, patios and walkways that do not require structural foundations may extend into the setback area but in no case shall be sited closer than 15 feet from the bluff edge.

If anisotropic conditions are assumed for any geologic unit, strike and dip of weakness planes shall be provided.

Best Available Science on sea level rise shall be updated, in keeping with regional policy efforts, as new, peer-reviewed studies on sea level rise become available.

Bioengineered options ('soft solutions' which include, but are not limited to, dune restoration, sand nourishment, and design criteria emphasizing maximum landward setbacks and raised foundations) shall be the first choice instead of concrete or rip-rap when considering methods to protect existing development from erosion and wave action.

the long-term average bluff retreat rate shall be determined by the examination of historic records, surveys, aerial photographs, published or unpublished studies, or other evidence that unequivocally show the location of the bluff edge through time.

the time span used to calculate a site-specific long-term bluff retreat rate shall be as long as possible, but in no case less than 50 years.

In no case shall development be set back less than 100 feet from the bluff edge. May be reduced to 50 feet if geotechnical staff determines conditions can be met.

When planes of weakness are oriented normal to the slope or dip into the slope, or when the strength of materials is considered homogenous, circular failure surfaces shall be sought through a search routine.

All construction debris shall be removed from the beach daily and at the completion of development.

the property owner shall be required to record a deed restriction against the property that ensures that no shoreline protection structure shall be proposed or constructed to protect the development approved.

the property owner shall be required to execute and record a deed restriction which acknowledges and assumes said risks and waives any future claims of damage or liability.

the property owner shall be required to acknowledge, by the recordation of a deed restriction, that no future repair or maintenance, enhancement, reinforcement, or any other activity affecting the shoreline protection structure which extends the seaward footprint of the subject structure shall be undertaken.

all new beach or oceanfront bluff development shall be elevated above the base Flood Elevation (as defined by the Federal Emergency Management Agency) and sited as far landward as possible.

Measures to control erosion, runoff, and siltation shall be implemented at the end of each day's work.

and greater than or equal to 1.1 for the seismic condition.

The analyses shall demonstrate a factor of safety greater than or equal to 1.5 for the static condition.

All new beachfront development shall be required to utilize a foundation system adequate to protect the structure from wave and erosion hazard without necessitating the construction of a shoreline protection structure.

All grading shall be properly covered and sandbags, ditches, or other Best Management Practices (BMPs) shall be used to prevent runoff and siltation.

No machinery shall be allowed in the intertidal zone at any time unless authorized in the coastal development permit.

Shoreline and bluff protection structures shall not be permitted to protect new development.

Oceanfront land suitable for recreational use shall be protected for recreational use and development unless present and future foreseeable demand for public or commercial recreational activities that could be accommodated on the property is already adequately provided for in the area.

No permanent structures shall be permitted on a bluff face, except for engineered stairways or accessways to provide public beach access.

Public vertical beach accessways shall be incorporated into the design of these protective structures at intervals of no less than 300 linear feet.

Public access from the nearest public roadway to the shoreline (vertical public access) and along the coast (lateral public access) shall be provided in new development projects except where...

The County shall participate, as possible, in regional assessments of sea level rise vulnerability, risk and adaption planning efforts.

The County shall prepare a sea level rise vulnerability assessment, or cooperate in a regional or multi-jurisdictional assessment.

New development shall include, at a minimum, the use of secondary treatment waste disposal systems.

All slope analyses shall be performed using shear strength parameters (friction angle and cohesion), and unit weights determined from relatively undisturbed samples collected at the site.

Reference should be made to Los Angeles County Department of Public Works' 'Manual for Preparation of Geotechnical Reports,' dated July 1, 2013, and to the ASCE/SCEC guidelines when selecting shear strength parameters.

Shoreline protective devices including revetments, breakwaters, groins, harbor channels, seawalls, cliff retaining walls, and other such construction that alters natural shoreline processes shall be permitted only when required to serve coastal-dependent uses or to protect existing structures or public beaches in danger from erosion.

Slope stability analyses shall be undertaken through cross-sections modeling worst case geologic and slope gradient conditions.

On any beach found to be appropriate, alternative 'soft solutions' to the placement of shoreline protection structures shall be required to protect existing development.

No stockpiling of dirt or construction materials shall occur on the beach.

all swimming pools and spas shall be of double wall construction with subdrains between the walls and leak detection systems.

If anisotropic conditions are assumed for units containing critical failure surfaces determined above, and when planes of weakness are inclined at angles ranging from nearly parallel to the slope to dipping out of slope, factors of safety for translational failure surfaces shall also be calculated.

The County shall periodically review tsunami preparation and response policies/practices to reflect current and predicted future sea level trends.

All slope stability analyses shall be undertaken with water table or potentiometric surfaces for the highest potential ground water conditions.