Acre	: A unit of area equivalent to 43,560 square feet.
Actual Production	: A federal oil and gas lease is considered in actual production status when it contains one or more wells drilled on a lease or unit or communization agreement basis, which are producing or capable of producing oil or gas in paying quantities.
Acute Hazard	: A hazard that can have either an immediate or delayed effect (with short-term or prolonged consequences) due to a single exposure to an accident, such as exposure to a gas explosion, fireball, or a release of an acutely toxic material.
Air Basin	: An area with generally similar meteorological and geographic conditions throughout. To the extent possible, air basin boundaries are defined along political boundary lines and include both the source and receptor areas. California is currently divided into 15 air basins. Santa Barbara County is located in the South Central Coast Air Basin, along with San Luis Obispo and Ventura Counties.
Air District	: A political body responsible for managing air quality on a regional or county basis. California is currently divided into 35 air districts (See Regulatory Agencies).
Air Pollution	: Degradation of air quality resulting from unwanted chemicals or other materials occurring in the air.
Air Pollution Control District (APCD)	: The Santa Barbara County Air Pollution Control District regulates local sources of air pollution in accordance with state and federal air pollution control laws for the purposes of attaining all ambient air quality standards and minimizing public exposure to airborne toxins and nuisance odors.
Air Quality Attainment Plan (AQAP)	: A comprehensive document required under the California Clean Air Act (Health and Safety Code Section 40910 et. seq.), which details the programs and control measures to be implemented for the purpose of reducing emissions. Emissions ultimately must be reduced to the extent the measured concentrations of pollutants in the air will not exceed California ambient air quality standards.
Ambient Air Quality Standard	: Health and welfare-based standards established by the state or federal government for clean outdoor air that identify the maximum acceptable average concentrations of air pollutants during a specified period of time.
American Gas Association (AGA)	: The American Gas Association (AGA) represents local natural gas utilities that deliver gas to U.S. homes and businesses. AGA provides services to member natural gas pipelines, marketers, gatherers, international gas companies and industry associates. AGA acts as a clearinghouse for gas energy information and as a catalyst in technical and energy policy matters.
American Petroleum Institute (API)	: The primary trade association representing all segments of the petroleum industry from exploration through marketing in the United States. API is the largest association in the petroleum industry and API provides a forum for the oil and natural gas industry to pursue public policy objectives and advance the interests of the industry.
American Society For Testing And Materials (ASTM)	: ASTM provides a forum for the development and publication of voluntary consensus standards for materials, products, systems, and services.
Amine Unit	: A natural gas treatment unit for removing contaminants- H2S, COS, CO2
Amortization	: A process that allows for the eventual termination of a non-conforming use, without compensation, by establishing a time period for the owner to recoup its investment.
Approved Exploration Plan Review Process (AEPRP)	: The Minerals Management Service (MMS) Pacific Region established this process in 1994 to review previously approved Exploration Plans (EP's) in the Pacific Region. This process provides the opportunity for MMS and state and local agencies to jointly investigate and propose appropriate mitigation, which could be necessary because of changes to a plan or to the environmental considerations that may have occurred over the intervening years since the original plan was approved. This process implements the MMS regulatory requirement found at 30 CFR 250.33(n)(1) [Code of Federal Regulations] for periodic reviews of approved EP's. The MMS reviews an EP under this process when an operator intends to drill an exploratory well pursuant to an approved EP that is over 2 years old.
Aromatics	: Hydrocarbons characterized by unsaturated ring structures of carbon atoms. Commercial petroleum aromatics are benzene, toluene, and xylene (BTX).
Artificial Lift	: Any method used to raise oil to the surface through a well after reservoir pressure has declined to the point at which the well no longer produces be means of natural energy. Sucker rod pumps, gas lift, hydraulic pumps, and submersible electric pumps are the most common forms of artificial lift.
Asphalt	: A solid hydrocarbon found as a natural deposit. Crude oil of high asphaltic content, when subjected to distillation to remove the lighter fractions such as naphtha and kerosene, leaves asphalt as a residue. Asphalt is a cement-like material containing bitumens as the predominant constituent obtained by petroleum processing. It’s dark brown or black in color and at normal temperatures is a solid.
Assessor's Parcel Number (APN)	: A unique number assigned by the County Assessor identifying a property for tax assessment purposes only. It does not indicate parcel legality or a valid building site.
Attainment Area	: A geographic region, which is in compliance with the National and/or California Ambient Air Quality Standards for a criteria pollutant under the Federal Clean Air Act or California Clean Air Act.
Authority to Construct (ACT)	: The ATC permit allows for the construction of a new facility or installation as well as modification of equipment at an existing facility. The ATC ensures that the equipment is designed, constructed, and operated to meet local, state, and federal air quality requirements.
Average Noise Levels Exceeded 10% of Time (L10)	: L10 is the noise level exceeded for 10% of the total sample time when noise measurements are conducted.
Average Noise Levels Over Specific Time Period (LEQ)	: LEQ is equivalent continuous sound level during a period of sound monitoring and measurement.
Barrel (bbl)	: A measure of volume for petroleum products. One barrel is equivalent to 42 U.S. gallons or 0.1589 cubic meters. One cubic meter equals 6.293 barrels.
Barrels Per Calendar Day	: The maximum number of barrels of input that can be processed during a 24-hour period after making allowances for the following limitations:
Barrels Per Day (BPD)	: In the United States, a measure of the rate of flow of a well; total amount of oil and other fluids produced, processed, or transported per day.
Barrels Per Stream Day	: The amount a unit can process running at full capacity under optimal crude oil and product slate conditions.
Basic Sediment and Water (BS&W)	: Impurities and foreign matter contained in oil produced from a well.
Batch	: A definite amount of oil, mud, acid, or other liquid in a tank or pipe.
Benzene (C6H6)	: An aromatic hydrocarbon present in small proportion in some crude oils and made commercially from petroleum by the catalytic reforming of napthenes in petroleum naptha. Also made from coal in the manufacture of coke. Used as a solvent, in manufacturing detergents, synthetic fibers, and petrochemicals and as a component of high-octane gasoline.
Benzene, Toluene, Ethylbenzene, Xylene (BTEX)	: Benzene, Toluene, Ethylbenzene, Xylenes (BTEX), and substituted benzyne are the most common aromatic compounds in petroleum, making up to a few percent of the total mass of some crude oils. BTEX are the most soluble and mobile fraction of crude oil. BTEX are also hazardous, carcinogenic, and neuro-toxic compounds subject to hazardous materials regulations.
Best Available Control Technology (BACT)	b) The most stringent limitation contained in any State Implementation Plan; or c) Any other emission control device or technique determined after public hearing to be technologically feasible and cost effective by the Control Officer. For sources permitted under Rule 803, BACT is an emission limitation based on the maximum degree of reduction for each pollutant that would be emitted from any new or modified stationary source, which on a case-by-case basis, taking into account energy, environment, and economic impacts and other costs, is achievable for such a source or modification through application of production processes or available methods, systems, and techniques, including fuel cleaning or treatment or innovative fuel combustion techniques for control of such a pollutant.
Best Management Practice (BMP)	: BMPs are: 1) a practice or combination of practices that are determined to be the most effective and practicable means of controlling point and non-point pollutants at levels compatible with environmental quality goals; and 2) methods, measures or practices selected by an agency to meet pollution control needs. BMPs include structural and non-structural controls, operation, and maintenance procedures.
Billion (B)	: (U.S.) denoting a quantity consisting of one thousand million items or units; (Britain) denoting a quantity consisting of one million million items or units [syn: a billion] n 1: (in Britain) the number that is represented as a one followed by 12 zeros [syn: one million million, 1000000000000] 2: (in the United States) the number that is represented as a one followed by 9 zeros [syn: one thousand million, 1000000000]
Bioventing	: Bioventing stimulates the naturally occurring soil microorganisms to degrade compounds in soil by providing oxygen. The rate of natural degradation is generally limited by lack of oxygen in soil. In conventional bioventing systems, oxygen is delivered by an electronic blower to subsurface vent wells such that the airflow to provide oxygen to sustain microbial activity. Passive bioventing systems use natural air exchange to deliver oxygen to the subsurface via bioventing wells. A one-way valve is installed on a vent well, which allows air to enter the well when the pressure inside the well is lower than atmospheric pressure.
Bit	: The cutting or boring element used in drilling oil and gas wells. The bit consists of a cutting element and a circulating element. The circulating element allows the passage of drilling fluid and employs the hydraulic force of the fluid stream to improve drilling rates. In rotary drilling, several drill collars are joined to the bottom end of the drill pipe, and the bit is attached to the end of the sting of drill collars.
Bleed	: To drain off liquid or gas, generally slowly, through a valve called a bleeder. To bleed down, or bleed off, means to release pressure slowly from a well or from pressurized equipment.
Blowdown	: 1) The emptying or depressurizing of material in a vessel. 2) The material thus discarded.
Blowout	: An uncontrolled flow of gas, oil, or other fluids from a well to the atmosphere. A well may blow out when formation pressure exceeds the pressure overburden of a column of drilling fluid.
Blowout Preventer	: One of several valves installed at the wellhead to prevent the escape of pressure either in the annular space between the casing and drill pipe or in the open hole (i.e., hole with no drill present) during drilling completion operations. Blowout preventers on land rigs are located beneath the rig at the land's surface; on jack-up or platforms rigs, at the water's surface; and on floating offshore rigs, on the seafloor.
Board of Supervisors	: A county’s legislative body. Board members are elected by popular vote and are responsible for enacting ordinances, imposing taxes, making appropriations, and establishing county policy. The board adopts the general plan, zoning, and subdivision regulations.
Boiling Liquid Expanding Vapor Explosions (BLEVEs)	: The violent rupture of a container of flammable material and the rapid vaporization of the material, which may result in a large rising fireball with intense thermal radiation and potential "rocketing" of part of the container. BLEVEs generally result from exposure of the container to external source of high heat.
Bonuses	: OCS leases in areas thought to contain minerals are awarded through a competitive bidding process. Bonuses represent the cash amount successfully bid to win the rights to a lease.
British Thermal Unit (BTU)	: The amount of heat required to raise one pound of water one degree Fahrenheit.
Brown Act	: The Ralph M. Brown open Meeting Act (commencing with Government Code Section 54950) requires cities and counties to provide advanced public notice of hearings and meetings of their councils, boards, and other bodies. Meetings and hearings, with some exceptions, must be open to the public.
Buffer Zone	: A geographic area between a potential pollution source and areas sensitive to that potential pollution source. Buffer zones are intended to control erosion, filter sediments, filter and absorb pollutants, etc.
Bulk Terminal	: A facility used primarily for the storage and/or marketing of petroleum products which has a total bulk storage capacity of 50,000 barrels or more and/or receives petroleum products by tanker, barge or pipeline.
Business, Transportation and Housing Agency	: The Business, Transportation & Housing Agency is part of the Executive Branch of California government and its Secretary is a member of the Governor's cabinet. There are 14 departments within the Business, Transportation and Housing Agency. The Agency oversees programs that plan, build, and maintain California's transportation systems, that ensure efficient and fair markets for the real estate industry, and that assist state and community efforts to expand the availability of affordable housing. The Agency also regulates managed health care plans as well as the banking, and financial and securities industries, and carries out the Governor's vision for business, transportation and housing in California.
Butane (C4H10)	: A normally gaseous, paraffinic hydrocarbon (C4H10) extracted from natural gas or refinery gas streams. It includes isobutane and normal butane, and is used primarily for blending into high-octane gasoline, for residential and commercial heating, and for industrial purposes, especially the manufacture of chemicals and synthetic rubber.
Bypass	: 1) A pipe connection around a valve or other control mechanism that is installed to permit passage of fluid through the line while adjustments or repairs are being made on the control. 2) A delivery of gas to a customer's traditional supplier. For example, delivery of gas to an end user directly off a transmission pipeline without moving the gas through the end user's traditional local distribution company supplier.
California Air Resources Board (ARB or CARB)	: The State's lead air quality agency consisting of an eleven-member board appointed by the Governor and several hundred employees. CARB is responsible for attainment and maintenance of the state and federal air quality standards, and is fully responsible for motor vehicle pollution control. It oversees county and regional air pollution programs.
California Ambient Air Quality Standards (CAAQS)	: A legal limit that specifies the maximum level and time of exposure in the outdoor air for a given air pollutant and which is protective of human health and public welfare (Health and Safety Code 39606b). CAAQSs are recommended by the California Office of Environmental Health Hazard Assessment and adopted into regulation by the CARB. CAAQSs are the standards which must be met per the requirements of the California Clean Air Act (State Act).
California Clean Air Act of 1988	: A California law passed in 1988, which provides the basis for air quality planning and regulation independent of federal regulations. A major element of the Act is the requirement that local air districts in violation of the CAAQS must prepare attainment plans which identify air quality problems, causes, trends, and actions to be taken to attain and maintain California's air quality standards by the earliest practicable date.
California Coastal Commission (CCC)	: This commission was established by voter initiative in 1972 (Proposition 20) and made permanent by the Legislature in 1976 (the Coastal Act). The primary mission of the Commission, as the lead agency responsible for carrying out California's federally approved coastal management program, is to plan for and regulate land and water uses in the coastal zone consistent with the policies of the Coastal Act.
California Department of Conservation, Division of Oil, Gas, and Geothermal Resources (DOGGR)	: This division oversees the drilling, operation, maintenance, and plugging of oil, natural gas, and geothermal wells, emphasizing sound engineering practices that protect the environment, prevent pollution, and ensure public safety.
California Department of Fish and Game (CDFG)	: This department manages California's diverse fish, wildlife, and plant resources, and the habitats upon which they depend, for their ecological values and for their use and enjoyment by the public California Department of Fish and Game, Division of Spill Prevention and Response (OSPR). OSPR which is housed within the Department Fish and Game is the lead State agency charged with oil spill prevention and response within California's marine environment. The Lempert-Keene-Seastrand Oil Spill Prevention and Response. Act of 1990 established OSPR and provides the OSPR Administrator with substantial authority to direct spill response, cleanup, and natural resource damage assessment activities.
California Department of Toxic Substance Control (DTSC)	: The Department's mission is to restore, protect and enhance the environment, to ensure public health, environmental quality and economic vitality, by regulating hazardous waste, conducting and overseeing cleanups, and developing and promoting pollution prevention.
California Endangered Species Act (CESA)	: The California Endangered Species Act (CESA) (Fish & Game Code 2050, et seq.) generally parallels the main provisions of the Federal Endangered Species Act and is administered by the California Department of Fish and Game (DFG). Under CESA the term "endangered species" is defined as a species of plant, fish, or wildlife which is "in serious danger of becoming extinct throughout all, or a significant portion of its range" and is limited to species or subspecies native to California.
California Energy Commission (CEC)	: This commission is the state's primary energy policy and planning agency. Created by the Legislature in 1974 and located in Sacramento, the Commission has five major responsibilities: 1) forecasting future energy needs and keeping historical energy data; 2) licensing thermal power plants 50 MW or larger; 3) promoting energy efficiency through appliance and building standards; 4) developing energy technologies and supporting renewable energy; and 5) planning for and directing state response to energy emergencies.
California Environmental Projection Agency (Cal/EPA)	: This agency is responsible for the restoration, protection, and enhancement of the environment, to ensure public health, environmental quality and economic vitality.
California Environmental Quality Act (CEQA)	: The basic purpose of CEQA is: 1) to inform government decision makers and the public about the potential environmental effects of proposed activities; 2) to identify ways that a proposed project's environmental damage can be avoided or significantly reduced; 3) to prevent significant, avoidable damage by requiring changes in projects, either by the adoption of alternatives or imposition of mitigation measures; and 4) to disclose to the public why a project was approved if that project would have significant environmental effects. California lawmakers enacted CEQA (Public Resources Code, 21000 et. seq.) in 1970, one year after the federal lawmakers enacted the National Environmental Policy Act. CEQA applies to all governmental agencies at all levels in California, but does not apply to the California legislature. It affects the approval of projects subject to CEQA that may result in one or more significant effects on the environment. "CEQA compels government first to identify the environmental effects of projects, and then to mitigate those adverse effects through the imposition of feasible alternatives." (Sierra Club v. State Board of Forestry, 1994.)
California Public Utilities Commission (CPUC)	: The California Public Utilities Commission (CPUC) regulates privately owned telecommunications, electric, natural gas, water, railroad, rail transit, and passenger transportation companies.
California Public Utilities Commission (Energy Division)	: This Division drafts resolutions for formal consideration by the California Public Utilities Commission. These resolutions generally result from informal utility requests called advice letters that are submitted to request rate and tariff adjustments. The Energy Division through its Federal Policy and Rate-making Section represents the Commission in Federal Energy Regulatory Commission (FERC) and court proceedings. The Energy Division assists the Commission in its regulation of four types of Investor-Owned Utilities (IOUs): Electric, Natural Gas, Steam and Petroleum Pipeline Companies. Commission-approved tariffs (official rates and terms of service) for these four types of IOUs are maintained by the Energy Division.
California Resources Agency	: This agency is responsible for the conservation, enhancement, and management of California's natural and cultural resources, including land, water, wildlife, parks, minerals, and historic sites. Among its departments, boards, conservancies, commissions and programs, the following play a pre-dominate role in development of offshore oil and gas reserves.
California State Lands Commission (SLC)	: This commission was established in 1938 with authority detailed in Division 6 of the California Public Resources Code. The members of the State Lands "Commission" include the Lieutenant Governor, the State Controller and the State Director of Finance.
California State Water Resources Control Board	: The State Water Resources Control Board (SWRCB) was created by the Legislature in 1967. The SWRCB ensures the quality for waters of the State, while allocating those waters to achieve the optimum balance of beneficial uses. The joint authority of water allocation and water quality protection enables the SWRCB to provide comprehensive protection for California's waters. The SWRCB consists of five full-time salaried Members, each filling a different specialty position. Board members are appointed to four-year terms by the Governor and confirmed by the Senate. There are nine Regional Water Quality Control Boards that develop and enforce water quality objectives and implementation plans which will best protect the beneficial uses of the State's waters, recognizing local differences in climate, topography, geology and hydrology. Each RWQCB has nine part-time Members also appointed by the Governor and confirmed by the Senate. RWQCBs develop "basin plans" for their hydrologic areas, govern requirements, issue waste discharge permits, take enforcement action against violators, and monitor water quality. The task of protecting and enforcing the many uses of water, including the needs of industry, agriculture, municipal districts, and the environment is an ongoing challenge for the SWRCB and RWQCBs.
Capacity (idle)	: The component of operable capacity that is not in operation and not under active repair, but capable of being placed in operation within 30 days; and capacity not in operation but under active repair that can be completed within 90 days.
Capacity (operable)	: The amount of capacity that, at the beginning of the period, is in operation; not in operation and not under active repair, but capable of being placed in operation within 30 days; or not in operation but under active repair that can be completed within 90 days. Operable capacity is the sum of the operating and idle capacity and is measured in barrels per calendar day or barrels per stream day.
Capacity (production)	: The maximum amount of product that can be produced from processing facilities.
Capping	: A process to close a well to prevent the escape of gas.
Casing	: The large-diameter steel pipe placed in an oil and gas well as drilling progresses to prevent the wall of the hole from caving in during drilling, to prevent seepage of fluids, and to provide a means of extracting hydrocarbons if the well is productive.
Casing Head	: The top of the casing set in a well; the part of the casing that protrudes above the surface and to which the control valves and flow pipes are attached.
Casing Head Gas	: Gas produced from an oil well as distinguished from gas produced from a gas well. The casing head gas is taken off at the top of the well or at the separator.
Cathodic Protection	: A method of preventing corrosion by applying a low-voltage electrical charge on a metal pipeline, which causes the pipeline to behave as a cathode
Caustic Soda	: Caustic Soda (sodium hydroxide) is a strong, highly poisonous and corrosive alkali
Cellar	: A hole dug, usually before drilling of a well, to allow working space for the casing head equipment.
Christmas Tree	: The assembly of control valves, pressure gauges, and chokes at the top of a well to control the flow of oil and gas after the well has been drilled and completed.
Circulation Element	: Identifies the general location and extent of existing and proposed major roads, transportation routes, terminals, and public utilities and facilities. It must be correlated with the land use element.
Clean Air Act (CAA)	: A federal law passed in 1970 and amended in 1977 and 1990, which forms the basis for the national pollution control effort. Basic elements of the act include national ambient air quality standards for major air pollutants, air toxicity standards, acid rain control measures, and enforcement provisions.
Coastal Zone Management Act (CZMA)	: Passed by Congress in 1972, CZMA encourages effective management of coastal zone resources. This act established a federal and state coordinated regulatory process known as "consistency review," which grants to coastal states that elect to participate in the CZMA program and whose coastal programs have been federally approved, the ability to regulate federal activities that affect their coastal zones : including Outer Continental Shelf oil and gas activities. The CZMA provides federal funding to support state coastal zone management programs that meet certain CZMA policy objectives. California's Coastal Management Plan was certified in 1978 by the National Oceanic and Atmospheric Administration, giving the State consistency review over federal activities that affect its coastal zone.
Cogeneration Plant	: A coal- or gas-fired plant that generates both steam and electricity for in-plant use or for sale.
Commingled	: Mixed. With respect to oil, it is the mixture of oil and gas from different sources into a common stream.
Community Noise Equivalent Level (CNEL)	: The CNEL is a calculated noise average over a 24 hour period. It attempts to differentiate the intrusiveness of daytime and nighttime noises by applying a weighting factor to nighttime noise.
Community Plan	: Community plans are often used by cities and counties to plan the future of an area at a finer level of detail than that provided in the comprehensive plan. A portion of the comprehensive plan focusing on the issues pertinent to a particular area or community within a city or county. It supplements the policies of the comprehensive plan.
Comprehensive (General) Plan	: The local comprehensive plan can be described as a city's or county's "blueprint" for future development. The comprehensive plan and its diagrams and maps have a long-term outlook, identifying the types of development that will be allowed, the spatial relationships among land uses, and the general pattern of future development. State law mandates seven elements in a county's or general law city's comprehensive plan (though other elements may be added as a jurisdiction deems necessary). These seven elements are:
Condensate	: A natural gas liquid with a low vapor pressure, compared with natural gasoline and liquefied petroleum gas. It is produced from a deep well where the temperature and pressure are high. Gas condenses as it rises up the well bore and reaches the surface as condensate. Similarly, condensate separates out naturally in pipelines or in a separation plant by the normal process of condensation.
Condensate (plant)	: One of the natural gas liquids, mostly pentanes and heavier hydrocarbons, recovered and separated as liquids at gas inlet separators or scrubbers in processing plants.
Conditional Use Permit (CUP)	: Most zoning ordinances identify certain uses that do not precisely fit into existing zones, but which may be allowed upon approval of a conditional use permit. The local zoning ordinance specifies those uses for which a conditional use permit may be requested, which zones they may be requested in, and the public hearing procedure. If the local planning commission or board of supervisors approves the use, it will usually do so subject to certain conditions being met by the permit applicant.
Conservation element	: Addresses the conservation, development, and use of natural resources including water, forests, soils, rivers, and mineral deposits.
Control Measure	: A strategy to reduce the emissions of air pollution caused by a specific activity or related group of activities. An existing control measure is a measure, which is currently being implemented as a rule. A proposed for adoption control measure is a measure that the APCD will be mandated to make into a rule if the plan is approved by the Board. A further study control measure is a measure that has the potential of being proposed for adoption, but warrants further study.
Corrosion Inhibitor	: A chemical substance that minimizes or prevents corrosion in metal equipment.
Coupon	: A small metal strip which is exposed to corrosive systems for purpose of determining the nature and severity of corrosion.
Crude Oil	: An unrefined liquid petroleum consisting of a mixture of hydrocarbons. It ranges in gravity from 9 degrees API to 55 degrees API and in color from yellow to black. Crude oils may be referred to as heavy or light, according to API gravity, with lighter weight oil exhibiting the higher gravity. Viscosity varies with gravity; crude oils with lower gravity are more viscous and oils with higher gravity are less viscous.
Crude Oil (domestic)	: Crude oil produced in the United States or from its "outer continental shelf" as defined in 43 USC 1331.
Crude Oil (foreign)	: Crude oil produced outside of the United States. Imported Athabasca hydrocarbons (tar sands from Canada) are included.
Crude Oil (Heavy)	: Crude oil of 20º API gravity or less. There are perhaps billions of barrels of heavy crude oil still in place in the U.S. that require special production techniques, notably steam injection or steam soak, to extract them from the underground formations.
Crude Oil (Sour)	: Oil containing hydrogen sulfide or other acidic gases.
Crude Oil Production	: The volume of crude oil produced from oil reservoirs during given periods of time. The amount of such production for a given period is measured as volumes delivered from lease storage tanks (i.e., the pint of custody transfer) to pipelines, trucks, or other media for transport to refineries or terminals with adjustments for (1) net differences between opening and closing lease inventories, and (2) basic sediment and water (BS&W).
Crude Oil Qualities	: Refers to two properties of crude oil, the sulfur content and API gravity, which affect refinery processing complexity and product characteristics.
Cubic Foot (cu ft)	: The volume of a cube, all edges of which measure 1 foot. Natural gas in the United States is usually measured in cubic feet, with the most common standard cubic foot being measured at 60 degrees Fahrenheit and 14.65 pounds per square inch absolute, although base conditions vary from state to state.
Cultural Resources Management Plan (CRMP)	: A CRMP is formulated to preserve and protect cultural resources from project impacts. Cultural resources include, but are not limited to, 1) archaeological materials and sites that are currently located on or beneath the ground surface; 2) standing structures that are over 50 years of age or are important because they represent a major historical theme or era; 3) cultural and natural places, certain natural resources, and sacred objects that have importance for Native Americans; and 4) American folklore traditions and arts. A CRMP must reflect an understanding of the historical, architectural, cultural and landscape characteristics that make a resource eligible for listing on the National Register, and, if not already prepared, provide an inventory of such resources. The CRMP must also justify the removal or alteration of a resource.
Cumulative Effect	: The incremental effect(s) of an individual project in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects (Public Resources Code Section 30105.5).
Cuttings	: The fragments of rock dislodged by the bit and brought to the surface in the drilling mud. Washed and dried cuttings samples are analyzed by geologists to obtain information about the formations drilled.
Dead Weight Tons (DWT)	: The carrying capacity of a vessel is the total weight of cargo, bunkers, dunnage, provisions, water, stores and spare parts, expressed in tons which a vessel can lift when loaded in salt water to her maximum draft, either winter, summer or tropical load-line, as the case may be.
Decibel (dB)	: The decibel (dB) is a unit of a logarithmic scale of power or intensity used to describe the amplitude of sound called the power level or intensity level. The decibel is defined as one tenth of a bel where one bel represents a difference in level between two intensities I1, I0 where one is ten times greater than the other.
Decline Curve	: An analysis of established trends of oil and gas production and analogous production data from other sources to project future production.
Dehydrate	: To remove water from a substance. Dehydration of crude oil is normally accomplished by treating with emulsion breakers. The water vapor in natural gas must be removed to meet pipeline requirements; a typical maximum allowable water vapor content is 7 pounds per million cubic feet per day.
Department of Commerce (DOC)	: A cabinet-level department in the Executive Branch of the Federal Government responsible for promoting a sustainable national economy.
Department of Energy (DOE)	: A Cabinet-level department in the Executive Branch of the Federal Government responsible for coordinating a comprehensive and balanced national energy plan.
Department of the Interior (DOI)	: A Cabinet-level department in the Executive Branch of the Federal Government, responsible for the administration of most of the nationally owned public lands and natural resources.
Department of Transportation (Caltrans)	: The State of California, Department of Transportation (Caltrans) is responsible for the design, construction, maintenance, and operation of the California State Highway System, as well as that portion of the Interstate Highway System within