Sec 2-3 glossary key planning terms Flashcards
Acre, Gross
Area of a site calculated to the centerline of bounding streets and other public rights-of-way.
Acre, Gross Developable
Area of a site, including proposed public streets and other proposed rights-of-way but excluding areas subject to physical or environmental constraints, which include creek corridors and floodways, and areas to be dedicated for greenways or habitat protection.
Acre, Net
Area of a site excluding land to be dedicated for required easements for vehicles and rights of
way, either public or private; land dedicated to be hazardous and unbuildable; and land to be dedicated for schools and parks or other facilities dedicated for public use.
Affordable Housing
Housing capable of being purchased or rented by a household of extremely low,
very low, low, or moderate income, based on the household’s ability to make monthly payments.
Housing is considered affordable when a household pays less than 30 percent of its gross monthly
income (GMI) for the housing, including utilities.
Aquifer
An underground, water-bearing layer of earth, porous rock, sand, or gravel, through which
water can seep or be held in natural storage. Aquifers generally hold sufficient water to be used as a water
supply.
Attainment Area
An area determined to have met federal or State air quality standards, as defined in the
Federal Clean Air Act or the California Clean Air Act. An area may be an attainment area for one
pollutant and a non-attainment area for others.
Best Management Practices (BMP)
The combination of standards, procedures, conservation measures,
and management practices that reduces or avoids adverse impacts of development. BMPs most commonly refer to water supply and quality management, but may also refer to other resources or planning concerns, such as air quality, agriculture and soils, biological resources, etc.
Buffer Area
A landscape area, usually containing trees, shrubs, and other natural surfaces, used to
protect a resource such as a waterway or agricultural land, or to increase the compatibility of adjacent
land uses.
Buildout.
That level of development characterized by full occupancy of all developable sites in
accordance with the General Plan; the maximum probable level of development envisioned by the General Plan under specified assumptions about densities and intensities. Buildout does not necessarily
assume parcels are developed at maximum allowable intensities.
Capital Improvement Program (CIP)
The multi-year scheduling of public physical improvements
based on studies of fiscal resources available and the choice of specific improvements to be constructed.
Climate Action Plan (CAP)
A plan to address community, agency, or business contributions to
greenhouse gas emissions (GHGs) and global climate change. A CAP usually consists of an existing GHG inventory, a projection of future emissions, a prioritized list of potential relevant actions the jurisdiction could take to reduce existing and future GHG emissions, some quantification of costs and benefits of each action, an estimate of the overall effect of plan implementation in terms of GHG reductions, and an implementation program including responsible parties, funding sources, and timelines for implementation.
CNEL (Community Noise Equivalent Level).
The average equivalent A-weighted sound level during a
24-hour day, obtained after addition of five decibels to sound levels in the evening from 7 p.m. to 10
p.m. and after addition of 10 decibels to sound levels in the night from 10 p.m. to 7 a.m.
Compatible
Capable of existing together without conflict or ill effects.
Conservation
The management of natural resources to prevent waste, destruction, or neglect.
Consistent
Free from variation or contradiction. Programs in the General Plan are to be consistent, not
contradictory. State law requires consistency between a general plan and implementation measures such
as the zoning ordinance.
Curb Cut
The opening along the curb line at which point vehicles or other wheeled forms of
transportation may enter or leave the roadway. Curb cuts are essential at street corners for wheelchair users.
dBA
The “A-weighted” scale for measuring sound in decibels; weights or reduces the effects of low and
high frequencies in order to stimulate human hearing. Every increase of 10 dBA doubles the perceived loudness though the noise is actually ten times more intense.
Decibel (dB)
A unit of measurement used to express the relative intensity of sound as heard by the
human ear describing the amplitude of sound, equal to 20 times the logarithm to the base 10 of the ratio of the pressure of the sound measured to the reference pressure, which is 20 micropascals (20 micronewtons per square meter).
Dedication
The commitment by an owner or developer of private land for public use, and the
acceptance of land for such use by the governmental agency having jurisdiction over the public function for which it will be used. Dedications for roads, parks, school sites, or other public uses often are required by the City as conditions of approval on a development.
Dedication, In lieu of.
Cash payments which may be required of an owner or developer as a substitute
for a dedication of land, usually calculated in dollars per lot, and referred to as in lieu fees or in lieu
contributions.
Density, Residential.
The number of dwelling units per acre of land. Densities are usually expressed in
units per gross developable acre. (See “Acres, Gross,” and “Acres, Gross Developable.”)
Density Bonus.
The allocation of development rights that allow a parcel to accommodate additional
square footage or additional residential units beyond the maximum for which the parcel is zoned, usually in exchange for the provision or preservation of an amenity at the same site or at another location. Under
California State Law, residential projects that provide affordable housing may be entitled to a 35 percent
increase of the underlying zone district.
Detention Area
A detention area is an area in the natural environment where rainwater runoff and
stormwater naturally collects during a rain and then is pumped to other areas. Human activity and
construction of homes have the effect of changing the size and shape of a detention area.
Detention Basin/Pond.
Facilities classified according to the broad function they serve, such as storage,
diversion or detention. Detention facilities are constructed to retard flood runoff and minimize the effect
of floods.