Forest Trail

Glossary

30 results found for

E

E85

A nominal blend of 85 volume percent denatured ethanol and 15 volume percent unleaded gasoline that is used in flexible fuel vehicles.

EAAC (Economic and Allocation Advisory Committee)

The Cal/EPA Secretary and ARB Chairman created an Economic and Allocation Advisory Committee to advise ARB on the design of a greenhouse gas cap-and-trade program. EAAC evaluated and provided recommendations on the implications of different allowance allocation strategies such as free allocation, auction, or a combination of both. EAAC also provided advice to ARB on its revised AB 32 economic analysis.

Acronyms:
EACC
Economic and Technology Advancement Advisory Committee (ETAAC)

The committee was formed as directed by AB 32 to advise ARB on activities that will facilitate investment in and implementation of technological research and development opportunities including, but not limited to, identifying new technologies, research, demonstration projects, funding opportunities, developing state, national and international partnerships and technology transfer opportunities; and, identifying and assessing research and advanced technology investment and incentive opportunities that will assist in the reduction of greenhouse gas emissions. The committee may also advise the ARB on state, regional, national and international economic and technological developments related to greenhouse gas emission reductions.

Economic and Technology Advancement Advisory Committee (ETAAC)

The committee was formed as directed by AB 32 to advise ARB on activities that will facilitate investment in and implementation of technological research and development opportunities including, but not limited to, identifying new technologies, research, demonstration projects, funding opportunities, developing state, national and international partnerships and technology transfer opportunities; and, identifying and assessing research and advanced technology investment and incentive opportunities that will assist in the reduction of greenhouse gas emissions. The committee may also advise the ARB on state, regional, national and international economic and technological developments related to greenhouse gas emission reductions.

Acronyms:
ETAAC
Electric Vehicle

A motor vehicle that uses an electric motor as the basis of its operation. Such vehicles emit virtually no air pollutants. (See also hybrid electric vehicle.)

Acronyms:
EV
Electrostatic Precipitator (ESP)

An air pollution control device that removes particulate matter from an air stream by imparting an electrical charge to the particles for mechanical collection at an electrode. For more information, visit our associated training class on this subject.

Acronyms:
ESP
Emission Factor

For stationary sources, the relationship between the amount of pollution produced and the amount of raw material processed or burned. For mobile sources, the relationship between the amount of pollution produced and the number of vehicle miles traveled. By using the emission factor of a pollutant and specific data regarding quantities of materials used by a given source, it is possible to compute emissions for the source. This approach is used in preparing an emissions inventory. Visit U.S. EPA emission factors, or ARB's emission factors and toxic air contaminants.

Emission Inventory

An estimate of the amount of pollutants emitted into the atmosphere from major mobile, stationary, area-wide and natural source categories over a specific period of time such as a day or a year. For more information, visit our emissions inventory website.

Emission Offsets (Emissions Trading)

A rule-making concept whereby approval of a new or modified stationary source of air pollution is conditional on the reduction of emissions from other existing stationary sources of air pollution. These reductions are required in addition to reductions required by best available control technology. For information see our New Source Review Emission Reduction Credit Offsets website.

Emission Permit

A non-transferable or tradable allocation of entitlements by a government to an individual firm to emit a specified amount of a substance.

Emission Rate

The weight of a pollutant emitted per unit of time (e.g., tons/year).

Emission Standard

The maximum amount of a pollutant that is allowed to be discharged from a polluting source such as an automobile or smoke stack.

Emissions

Released or discharged air contaminants in the ambient air from any source.

Energy Content

The amount of energy available for doing work. For example, the amount of energy in fuel available for powering a motor vehicle.

Enhanced AT PZEV

Emissions certification standard for motor vehicles; vehicle meets the requirements of an AT PZEV and has some all electric range, such as a plug-in hybrid, or has an internal combustion engine (ICE) that runs on hydrogen.

Acronyms:
AT PZEV
Environmental Justice (EJ)

The fair treatment of people of all races and incomes with respect to development, implementation and enforcement of environmental laws, regulations and policies.

Acronyms:
EJ
Environmental Justice Advisory Committee (EJAC)

AB 32 directed ARB to convene an Environmental Justice Advisory Committee to advise ARB on the implementation of AB 32. EJAC is comprised of representatives from communities in the state with the most significant exposure to air pollution, including, but not limited to, communities with minority populations or low-income populations.

Acronyms:
EJAC
Environmental Performance Label (EP Label)

A label that provides a Global Warming Score and Smog Score, both on a scale from 1 to 10 (10 being cleanest). The Environmental Performance Label is required on all new cars sold in California that are manufactured after January 1, 2009.

Acronyms:
EP Label
Environmental Tobacco Smoke (ETS)

Primarily a combination of sidestream smoke from the burning end of a cigarette, pipe or cigar and exhaled mainstream smoke from the smoker. Other components include smoke emitted at the mouthpiece during puff drawing. For more information, visit our environmental tobacco smoke website.

Acronyms:
ETS
Environmental Tobacco Smoke (ETS)

Primarily a combination of sidestream smoke from the burning end of a cigarette, pipe or cigar and exhaled mainstream smoke from the smoker. Other components include smoke emitted at the mouthpiece during puff drawing. For more information, visit our environmental tobacco smoke website.

Acronyms:
ETS
Epidemiology

The study of the occurrence and distribution of disease within a population.

Ethanol (ETOH)

Ethyl-alcohol, a volatile alcohol containing two carbon groups (CH3CH2OH). For fuel use, ethanol is produced by fermentation of corn or other plant products.

Acronyms:
ETOH
Ethylene Oxide (ETO)

The chemical ethylene oxide (1,2-epoxyethane) which has been identified by the ARB and listed as a toxic air contaminant in title 17, California Code of Regulations, section 93000.

Acronyms:
ETO
Evaporative Emissions

Emissions from evaporating gasoline, which can occur during vehicle refueling, vehicle operation and even when the vehicle is parked. Evaporative emissions can account for two-thirds of the hydrocarbon emissions from gasoline-fueled vehicles on hot summer days.

Exceedance

A measured level of an air pollutant higher than the national or state ambient air quality standards. (See also NAAQS and CAAQS.)

Executive Order (EO)

The legal document that indicates that a product subject to ARB regulations has in fact meet those requirements and can be offered for sale in California. The Executive Order, or EO, also lists important compliance information such as the legal description of the product and manufacturer, the actual standards met, when the executive order was granted and any conditions of the certification.

Acronyms:
EO
Exhaust Gas Recirculation (EGR)

An emission control method that involves recirculating exhaust gases from an engine back into the intake and combustion chambers. This lowers combustion temperatures and reduces NOx. (See also nitrogen oxides.)

Acronyms:
EGR
Expected Peak Day Concentration (EPDC)

A calculated value that represents the concentration expected to occur at a particular site once per year, on average. The calculation procedure uses measured data collected at the site during a three-year period. Measured concentrations that are higher than the EPDC are excluded from the state area designation process.

Acronyms:
EPDC
Exposure

The concentration of the pollutant in the air multiplied by the population exposed to that concentration over a specified time period.

Exposure Assessment

Measurement or estimation of the magnitude, frequency, duration and route of exposure to a substance for the populations of interest.