Title 13 PLANNING AND ZONING REGULATIONS
Chapter 13.14 RURAL RESIDENTIAL DENSITY DETERMINATIONS
13.14.080 Resource and constraint data.
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Environmental Data
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Officially Adopted Data Source
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Acceptable New Information Source
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USGS Slope Maps
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A detailed slope map
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prepared by a civil engineer land surveyor
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Riparian Corridors
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USGS maps in conjunction with Watershed staff field review and General Plan
Policies
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A detailed map slopes and the extent of riparian vegetation prepared by a
qualified professional.
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100-year Floodplain
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Most Recent Federal Flood Insurance Maps; Program Local Coastal Land Use
Plan Resource and Constraint Maps
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An investigation prepared by a qualified registered engineer or registered
geologist which establishes accurate boundaries of the 100-year flood.
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Agricultural Lands
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Agricultural Resources Map, as adopted and amended by the Board of
Supervisors, Local Coastal Program Land Use Plan Resources & Constraints
Maps.
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Agricultural Policy Advisory Commission determination that land is or is
not viable with approval of the Board of Supervisors.
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Road Standards
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Field check of roads per General Plan requirements
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Applicant may improve roads to standards.
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Water Quality/Quantity Areas
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Measure J Groundwater Quality/Quantity Maps; Local Coastal Program Land Use
Plan resource and constraint Maps.
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A report conducted by a hydrologist which demonstrates that the region in
which the parcel is located is or is not experiencing water quality or
availability problems, and that the proposed water use will or will not
contribute to an adverse cumulative water quality or quantity impact.
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Overdrafted Aquifers
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Maps approved by the affected water district and adopted and amended by the
Board of Supervisors
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Primary Groundwater Recharge Areas
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Measure J Primary Groundwater Recharge Areas Maps; Local Coastal Program
Land Use Plan Resource and Constraint Maps.
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A report conducted by a soils engineer and registered geologist or
hydrogeologist which establishes that, based upon local soils, bedrock, and
regional hydrogeologic conditions, a particular area is or is not part of a
primary groundwater recharge area.
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General Plan Watershed
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General Plan Resources and Constraint Maps; Local Coastal Program Land Use
Plan Resource and Constraint Maps
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Information which indicates that a property does or does not lie in a
designated water supply watershed.
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Septic System Problem Areas
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Measure J Septic System Problem Areas Map
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Certification from Environmental Health that the property does or does not
lie in an area of experienced septic problems.
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Timber Resources
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General Plan Resource and Constraint Maps; Local Coastal Program Land Use
Plan Resource and Constraint Maps
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Actual field data which concludes that the property does or does not
contain marketable timberlands.
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Wildlife Resources and Sensitive Habitats
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Measure J Resources and Constraint Maps, Local Coastal Program Land Use
Plan Resource and Constraint Maps
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A biotic report prepared by a biologist which indicate the absence or
presence of wildlife habitats or unique or rare plant communities or individual
on the property.
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Geologic Rock Type
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USGS compilation Map of Rock Types
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A geologic report prepared by a registered geologist which accurately maps
fault traces, landslides and bedrock geology, or review and update or map by
Planning staff geologist.
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Fault
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Local Coastal Program Land Use Plan and General Plan Resources and
Constraint Maps and State and USGS Maps
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Liquefaction Areas
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Seismic Safety Element Liquefaction Map; Local Coastal Program Land Use
Plan Resource and Constraint Maps
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A report by a registered engineering geologist which indicates that the
building site will or will not be subjected to liquefaction.
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Landslides
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Seismic Safety Element map combined with Planning staff geologist field
inspections
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A geologic report prepared by a registered geologist which accurately maps
fault traces, landslides and bedrock geology.
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Fire Response Time
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Fire Response Time map prepared by County Officials
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A letter from the Chief of the Fire District responsible to serve a field
measured response time.
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Critical Fire Hazard Areas
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Field inspection combined with aerial photo survey; General Plan Resource
and Constraint Maps are general guidance
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In mitigable areas (see General Plan) with Fire Official’s approved
mitigation measures; other areas based on on-site vegetation (assuming no
illegal or unauthorized vegetation clearance has taken place).
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