UA

U-factor X area; REScheck performs a simple UA calculation for each building assembly to determine the overall UA of your building. The UA that would result from a building conforming to the code requirements is compared against the UA for your building. If the total heat loss (represented as a UA) through the envelope of your building does not exceed the total heat loss from the same building conforming to the code, then the software declares that you pass. A high-efficiency equipment trade-off can also be performed under certain codes. (Energycodes.gov)

U-Factor

A measure (Btu/h ft2 �F) of how well a material or series of materials conducts heat. U-factors for window and door assemblies are the reciprocal of the assembly R-value. The smaller the number, the less the heat flow. (Energycodes.gov)

UL

Underwriters Laboratories, Inc. (Energycodes.gov)

UL 181A/B

A test procedure for tapes and mastics used to seal ductwork. (Energycodes.gov)

ultimate analysis

A procedure for determining the primary elements in a substance (carbon, hydrogen, oxygen, nitrogen, sulfur, and ash). (US Dept of Energy)

ultimate bearing capacity

The load per unit of area required to produce failure by rupture of a supporting soil or rock mass. (US Dept of the Interior- Bureau of Reclamation)

ultraviolet

Electromagnetic radiation in the wavelength range of 4 to 400 nanometers. (US Dept of Energy)

ultraviolet light

(aka UV) Light waves on the electromagnetic spectrum that are similar to the light from the sun. (Energy Star.gov)

unaccounted for natural gas

Represents differences between the sum of the components of natural gas supply and the sum of components of natural gas disposition. These differences maybe due to quantities lost or to the effects of data reporting problems. Reporting problems include differences due to the net result of conversions of flow data metered at varying temperatures and pressure bases and converted to a standard temperature and pressure base; the effect of variations in company accounting and billing practices; differences between billing cycle and calendar-period time frames; and imbalances resulting from the merger of data reporting systems that vary in scope, format, definitions, and type of respondents. (US Energy Information Administration)

unbalanced head

See differential head. (US Dept of the Interior- Bureau of Reclamation)

unbundling (functional unbundling)

Electric service is traditionally provided on a bundled basis, meaning that generation, transmission, and distribution services are provided as a single package. By unbundling, the packaged offering of the various services that make up traditional utility service are separated into discreet, separately-priced components. An example would be selling electric power distribution as a separate service without including costs associated with power generation or transmission services. Unbundling could allow the customer to select a different supplier or source for each of the components required to obtain a product or service. (US Dept of the Interior- Bureau of Reclamation)

uncertainty

Describes situations where potential outcomes cannot be estimated based on historical events. (US Dept of the Interior- Bureau of Reclamation)

unclaimed deposit

A deposit account in a failed FDIC insured institution that remains unclaimed after the appointment of a receiver. (Also see Unclaimed Deposits Amendment Act.) (Federal Deposit Insurance Corporation)

Unclaimed Deposits Amendment Act

(aka UDAA) Legislation enacted on June 28, 1993, to amend the claims procedures for the depositors of a failed institution. Under UDAA, the FDIC is required, among other things, to make insurance payments available for 18 months after the appointment of a receiver, after which all remaining unclaimed funds would be offered to the appropriate state. (Federal Deposit Insurance Corporation)

unclassified excavation

Excavation paid for at a fixed price per yard, regardless of whether it is common or rock excavation. (US Dept of the Interior- Bureau of Reclamation)

uncollected funds

A portion of a deposit balance that has not yet been collected by the depository bank. (Help With My Bank)

uncompacted backfill

Material used in refilling an excavation without the material being compacted. See backfill. (US Dept of the Interior- Bureau of Reclamation)

unconditioned space

An enclosed space within a building that is not a conditioned space. (Energycodes.gov)

unconfined aquifer

An aquifer containing water that is not under pressure; the water level in a well is the same as the water table outside the well. An aquifer that discharges and recharges with an upper surface that is the water table. (US Dept of the Interior- Bureau of Reclamation)

unconformity

A break or gap in the geologic record where rock layers were eroded or never deposited. (US Dept of the Interior- Bureau of Reclamation)

under improved land

A piece of land which has been improved, but not to the full extent of its potential. (HardwickAssociates)

underflow

The downstream flow of water through the permeable deposits that underlie a stream and that are more or less limited by rocks of low permeability. (US Dept of the Interior- US Geological Survey)

underground building

A building for which 50 percent or more of the actual cash value, including machinery and equipment that are part of the building, is below ground. (Federal Emergency Management Agency)

underground home

A house built into the ground or slope of a hill, or which has most or all exterior surfaces covered with earth. (US Dept of Energy)

underground natural gas storage

The use of sub-surface facilities for storing natural gas for use at a later time. The facilities are usually hollowed-out salt domes, geological reservoirs (depleted oil or gas fields) or water-bearing sands (called aquifers) topped by an impermeable cap rock. (US Energy Information Administration)

underground natural gas storage injections

Natural gas put (injected) into underground storage reservoirs. (US Energy Information Administration)

underground storage tank

(aka UST) A tank and any underground piping connected to the tank that has 10% or more of its volume (including pipe volume) beneath the surface of the ground. USTs are designed to hold gasoline, other petroleum products, and hazardous materials. (US EPA- Pesticides)

underground storage withdrawals

Natural gas removed from underground storage reservoirs. (US Energy Information Administration)

underlying mortgage

Refers to the first mortgage when there is a wraparound mortgage. See "wraparound mortgage." (US Dept of Commerce- Census Bureau)

undersecured claim

A debt secured by property that is worth less than the full amount of the debt. (US Courts (Federal Courts)- Bankruptcy Basics)

understory

Vegetation underneath the trees. (US Dept of the Interior- Bureau of Reclamation)

undertaking

Any project, activity, or program that could change the character or use of historic properties. (US Dept of the Interior- Bureau of Reclamation)

underwriter

A professional who approves or denies a loan to a potential homebuyer based on the homebuyer's credit history, employment status, assets, debts and other factors such as loan guidelines. (Ginnie Mae) An underwriter is a licensed person to determine if an applicant is eligible for a mortgage loan (US Dept of Agriculture- Home Loans)

underwriting

The process a lender uses to determine loan approval. It involves evaluating the property and the borrower's credit and ability to pay the mortgage. (Freddie Mac) The credit decision-making process which can be automated, manual or a combination of both. In an automated process, application information is entered into a decision-making model that makes a credit determination based on pre-determined criteria. In a manual process an individual underwriter, usually an employee of the financial institution, makes the credit decision after evaluating all of the information in the loan package, including the credit report, appraisal, and verifications of deposit, income, and employment. Financial institutions often use a combination of both, with the automated decision representing one element of the overall credit decision. In each case, the decision may include stipulations or conditions that must be met before the loan can close. (Federal Financial Institutions Examination Council) The process used to determine loan approval. It involves evaluating the property and the borrower�s credit and ability to pay the mortgage. (Federal Trade Commission) Process of examining all the data about a homeowner's property and income documentation to determine whether the mortgage modification should be issued. The person who does this is called an underwriter. (Making Home Affordable) The process of evaluating a mortgage loan application to determine the risk involved for the lender. Underwriting involves an analysis of the borrower�s creditworthiness and the quality of the property. (US Dept of HUD- Fair Lending: Learn the Facts) The process of analyzing a loan application to determine the amount of risk involved in making the loan; it includes a review of the potential borrower's credit history and a judgment of the property value. (US Dept of HUD)

undisturbed sample

A soil sample that has been obtained by methods in which every precaution has been taken to minimize disturbance to the sample. (US Dept of the Interior- Bureau of Reclamation)

unemployment rate

The percentage of the labor force that is unemployed and actively seeking a job. (Federal Reserve Education)

unenclosed space

A space that is not an enclosed space. (Energycodes.gov)

unencumbered property

Any property which has no outstanding claims or liens against it. (HardwickAssociates)

unfinished area

An enclosed area that is used only for the parking of vehicles, building access, or storage purposes and that does not meet the definition of a finished (habitable) area. Drywall used for fire protection is permitted in unfinished areas. (Federal Emergency Management Agency)

unglazed solar collector

A solar thermal collector that has an absorber that does not have a glazed covering. Solar swimming pool heater systems usually use unglazed collectors because they circulate relatively large volumes of water through the collector and capture nearly 80 percent of the solar energy available. (US Dept of Energy)

unified planning work program

(aka UPWP) The management plan for the (metropolitan) planning program. Its purpose is to coordinate the planning activities of all participants in the planning process. (US Dept of Transportation- Federal Highway Administration)

unified soil classification system

A method of grouping and describing soils according to their engineering properties. (US Dept of the Interior- Bureau of Reclamation)

Uniform Commercial Code

(aka UCC) A set of statutes enacted by the various States to provide consistency among the States' commercial laws. It includes negotiable instruments, sales, stock transfers, trust and warehouse receipts, and bills of lading. (Help With My Bank)

uniform currency

The term used to describe the uniform acceptance across the country of currency notes issued by nationally chartered banks following the National Banking Act of 1863. (Federal Reserve Education)

uniform flow

Open channel flow where the depth and discharge remain constant with respect to space. Also, the velocity at a given depth is the same everywhere. (US Dept of the Interior- Bureau of Reclamation)

uniform gift to minors account

A UGMA provides a child under the age of 18 (a minor) with a way to own investments. The money is in the minor's name, but the custodian (usually the parent) has the responsibility to handle the money in a prudent manner for the minor's benefit. The parent cannot withdraw the money to use for his or her own needs. (Help With My Bank)

uniform residential loan application

A standard mortgage application your lender will ask you to complete. The form requests your income, assets, liabilities, and a description of the property you plan to buy, among other things. (Freddie Mac) A standard mortgage application you will have to complete. The form requests your income, assets, liabilities, and a description of the property you plan to buy, among other things. (Federal Trade Commission)

uniform settlement statement

A standard document prescribed by the Real Estate Settlement Procedures Act containing information for closing which must be supplied to both buyer and seller. (Ginnie Mae)

Uniform Standards of Professional Appraisal Practice

USPAP identifies the minimum set of standards that apply in all appraisal, appraisal review, and appraisal consulting assignments. These standards are promulgated by the Appraisal Standards Board of the Appraisal Foundation and are incorporated as a minimum appraisal standard in the Agencies� appraisal regulations. (US Dept of Treasury- Interagency) Developed in 1986 by the Ad Hoc Committee on Uniform Standards and copyrighted in 1987 by The Appraisal Foundation, USPAP forms the guidelines followed by every licensed and certified real estate appraiser in the United States. The purpose of these Standards is to establish requirements for professional appraisal practice, which includes appraisal, appraisal review, and appraisal consulting. The intent of these Standards is to promote and maintain a high level of public trust in professional appraisal practice. (HardwickAssociates)

uninsured deposit

The portion of any deposit of a customer at an insured depository institution that exceeds the applicable FDIC insurance coverage for that depositor at that institution. (Also see Insured Deposit.) (Federal Deposit Insurance Corporation)

unit

A unit owned by the policyholder in a condominium building. (Federal Emergency Management Agency)

unit energy costs

Costs for units of energy or power purchased at the building site. These costs may include energy costs, as well as costs for power demand as determined by the adopting authority. (Energycodes.gov)

unit hydrograph

The hydrograph of direct runoff from a storm uniformly distributed over the drainage basin during a specified unit of time; the hydrograph is reduced in vertical scale to correspond to a volume of runoff of 1 inch from the drainage basin. (After Am. Soc. Civil Engineers, 1949, p. 105.) The hydrograph of surface runoff (not including ground-water runoff) on a given basin due to an effective rainfall falling for a unit of time. (Sherman, 1949, p. 514.) (See also Hoyt and others, 1936, p. 124.) (US Dept of the Interior- US Geological Survey) The direct runoff hydrograph resulting from a unit depth of excess rainfall produced by a storm of uniform intensity and specified duration. A hydrograph with a volume of 1 inch of runoff resulting from a storm of a specified duration and areal distribution. Hydrographs from other storms of the same duration and distribution are assumed to have the same time base but with ordinates of flow in proportion to the runoff volumes. (US Dept of the Interior- Bureau of Reclamation)

unit value, consumption

Total price per specified unit, including all taxes, at the point of consumption. (US Energy Information Administration)

unit value, wellhead

The wellhead sales price, including charges for natural gas plant liquids subsequently removed from the gas; gathering and compression charges; and state production, severance, and/or similar charges. (US Energy Information Administration)

unit ventilator

A fan-coil unit package device for applications in which the use of outdoor- and return-air mixing is intended to satisfy tempering requirements and ventilation needs. (US Environmental Protection Agency)

unit weight of water

The weight per unit volume of water. See unit weight. (US Dept of the Interior- Bureau of Reclamation)

unit weight weight per unit volume

See density, dry unit weight, maximum unit weight, saturated unit weight, unit weight of water, wet unit weight. (US Dept of the Interior- Bureau of Reclamation)

unitary air conditioner

An air conditioner consisting of one or more assemblies that move, clean, cool, and dehumidify air. (US Dept of Energy)

unitary cooling equipment

One or more factory-made assemblies that normally include an evaporator or cooling coil and a compressor and condenser combination. Units that perform a heating function are also included. (Energycodes.gov)

unitary heat pump

One or more factory-made assemblies that include an indoor conditioning coil, compressor(s) and outdoor coil or refrigerant-to-water heat exchanger, including means to provide both heating and cooling functions. When heat pump equipment is provided in more than one assembly, the separate assemblies shall be designed to be used together. (Energycodes.gov)

unitary heating and cooling

One or more factory-made assemblies that include an evaporator or cooling coil, a compressor and condenser combination, and that shall be permitted to include a heating function as well. When heating and cooling equipment is provided in more than one assembly, the separate assemblies shall be designed to be used together. (Energycodes.gov)

unitary packaged

Each package is a standalone system that provides all of the heating and cooling requirements for the area of the building that it serves. (Energycodes.gov)

universal design

A design concept that encourages the construction or rehabilitation of housing and elements of the living environment in a manner that makes them usable by all people, regardless of ability, without the need for adaptation or specialized design. (US Dept of HUD)

universal soil loss equation

(aka USLE) An erosion model designed to predict the long-term average soil losses in runoff from specific field areas in specified cropping and management systems. The equation is: A = RKLSCP where A = Computed soil loss per unit area R = Rainfall and runoff factor K = Soil erodibility factor L = Slope-length factor S = Slope-steepness factor C = Cover and management factor P = Support practice factor The NRI calculations use location-specific data for the field in which the NRI sample point falls or that portion of the field surrounding the point that would be considered in conservation planning. (US Dept of Agriculture- Natural Resources Conservation Service)

unlinked passenger trips (transit)

The number of passengers boarding public transportation vehicles. A passenger is counted each time he/she boards a vehicle even if the boarding is part of the same journey from origin to destination. (US Dept of Transportation- Federal Highway Administration)

unliquidated claim

A claim for which a specific value has not been determined. (US Courts (Federal Courts)- Bankruptcy Basics)

unlisted items

Line item used in an appraisal estimate for design changes and to estimate pay items that have little influence on the total cost. The allowance for unlisted items in appraisal estimates should be at least 10 percent of the listed items. Line item used in a feasibility estimate for quantity changes due to receiving more design data and to estimate pay items that have little influence on the total cost. The allowance for unlisted items in a feasibility estimate varies between 2 percent and 15 percent of the listed items, depending on the form of the specifications quantities. (US Dept of the Interior- Bureau of Reclamation)

unload-reload cycle

A loading sequence resulting in rebound and recompression. (US Dept of the Interior- Bureau of Reclamation)

unpaid federal investment

A year-end amount owned to the Treasury which remains to be repaid and is synonymous to "balance to be repaid." (US Dept of the Interior- Bureau of Reclamation)

unpaid principal balance

(aka UPB) Amount of a loan that is due to the lender. This does not include additional charges, such as interest. (Making Home Affordable)

unpaved road surface

Gravel/soil and unimproved roads and streets (Surface/Pavement Type Codes 20, 30 and 40). (FHWA2) (US Dept of Transportation- Federal Highway Administration)

unsaturated zone

The area above the ground water level or water table where soil pores are not fully saturated, although some water may be present. (US EPA- Water Drinking Water Consumer Information Private Wells Glossary) The subsurface zone, usually starting at the land surface and ending at the water table, that includes both water and air in spaces between rocks. See zone of aeration. (US Dept of the Interior- Bureau of Reclamation)

unscheduled debt

A debt that should have been listed by the debtor in the schedules filed with the court but was not. (Depending on the circumstances, an unscheduled debt may or may not be discharged.) (US Courts (Federal Courts)- Bankruptcy Basics)

unsecured claim

A claim or debt for which a creditor holds no special assurance of payment, such as a mortgage or lien; a debt for which credit was extended based solely upon the creditor's assessment of the debtor's future ability to pay. (US Courts (Federal Courts)- Bankruptcy Basics)

unsecured credit

Credit extended on the borrower's promise to repay the debt, and for which collateral is not required. (Federal Reserve Education)

unsecured debt

A debt instrument not backed by the issuer's pledging of assets. Unsecured bonds are called debentures. (Federal Reserve Education)

unsecured loan

A loan that is not backed by collateral. (Federal Trade Commission)

unsheltered distance

(aka L factor) The unsheltered distance along the prevailing wind erosion direction across the field or area to be evaluated. For the NRI, the unsheltered distance is expressed in feet, measured through the sample point, parallel to the prevailing wind direction during the critical wind erosion period. (US Dept of Agriculture- Natural Resources Conservation Service)

unsold units

An unsold unit is a unit that does not meet the conditions listed in the definition of Presold Units. (US Dept of Treasury- Interagency) An unsold unit is a unit that does not meet the conditions listed in the definition of Presold Units. (Interagency Appraisal and Evaluation Guidelines (December 2, 2010))

unsteady flow

The velocity at a point varies with time. (US Dept of the Interior- Bureau of Reclamation)

unsuitable material

Those soils that cannot be compacted in embankment or backfill or where excavated to finished grade result in unstable material. (US Dept of the Interior- Bureau of Reclamation)

unvented heater

A combustion heating appliance that vents the combustion by-products directly into the heated space. The latest models have oxygen-sensors that shut off the unit when the oxygen level in the room falls below a safe level. (US Dept of Energy)

unwatering

As opposed to dewatering, unwatering is the interception and removal of ground water outside of excavations and the removal of ponded or flowing surface water from within excavations. To remove or drain off water. The removal and control of ponded or flowing surface water, surface seepage, and precipitation from within and adjacent to excavations by the use of channels, ditches, and sumps. (US Dept of the Interior- Bureau of Reclamation)

up front charges

The fees charged to homeowners by the lender at the time of closing a mortgage loan. This includes points, broker's fees, insurance, and other charges. (US Dept of HUD)

upland��

�Upland� is the default classification for regions of the map that are not classified as wetlands or other aquatic habitats. As such, the designation �Upland� represents generalized terrestrial areas which have not been further subdivided or categorized by type. While �Upland� primarily includes terrestrial (non-wetland) areas and former wetlands that are effectively drained or filled, it may include unclassified wetlands such as human-modified areas (e.g., farmed wetlands), wetlands that are too small to be differentiated, wetlands that couldn�t be detected on the type of imagery used (e.g., small wetlands under forest cover), and other unintentional wetland omissions (errors). According to the FWS Wetlands Classification System (Cowardin et al, 1979):� The upland limit of wetland is designated as (1) the boundary between land with predominantly hydrophytic cover and land with predominantly mesophytic or xerophytic cover; (2) the boundary between soil that is predominantly hydric and soil that is predominantly nonhydric; or (3) in the case of wetlands without vegetation or soil, the boundary between land that is flooded or saturated at some time during the growing season each year and land that is not.� Such areas are left unclassified when mapping wetlands. (US Fish & Wildlife Service)

uplands

All land not classified as wetland or deepwater habitat (see Wetlands, Cowardin et al. 1979). (US Dept of Agriculture- Natural Resources Conservation Service)

uplift

(a) The upward pressure in the pores of a material (interstitial pressure) On the base of a structure. An upward force on a structure caused by frost heave or windforce. The upward water pressure on a structure. (US Dept of the Interior- Bureau of Reclamation)

uplift pressure

See pore-water pressure. (US Dept of the Interior- Bureau of Reclamation)

uprate

An increase of greater than 15 percent in powerplant unit output at an existing facility through modifications or replacement of equipment. (US Dept of the Interior- Bureau of Reclamation)

upstream blanket

An impervious blanket placed on the reservoir floor and abutments upstream of a dam. For an embankment dam, the blanket may be connected to the impermeable element or core. (US Dept of the Interior- Bureau of Reclamation)

upstream face

The inclined surface of the dam that is in contact with the reservoir. See face. (US Dept of the Interior- Bureau of Reclamation)

urban and built-up areas

A Land cover/use category consisting of residential, industrial, commercial, and institutional land; construction sites; public administrative sites; railroad yards; cemeteries; airports; golf courses; sanitary landfills; sewage treatment plants; water control structures and spillways; other land used for such purposes; small parks (less than 10 acres) within urban and built-up areas; and highways, railroads, and other transportation facilities if they are surrounded by urban areas. Also included are tracts of less than 10 acres that do not meet the above definition but are completely surrounded by Urban and built-up land. Two size categories are recognized in the NRI: areas of 0.25 acre to 10 acres, and areas of at least 10 acres. (US Dept of Agriculture- Natural Resources Conservation Service)

urban area

Predominantly cities, towns or developed areas where the population is significant. (US Dept of the Interior- Bureau of Reclamation)

urban highway

Any road or street within the boundaries of an urban area. An urban area is an area including and adjacent to a municipality or urban place with a population of 5,000 or more. The boundaries of urban areas are fixed by state highway departments, subject to the approval of the Federal Highway Administration, for purposes of the Federal-Aid Highway Program. (US Dept of Transportation- Federal Highway Administration)

urban renewal area

A slum area or a blighted, deteriorated, or deteriorating area in the locality involved which the Secretary approves as appropriate for an urban renewal project. (US Dept of HUD)

urban renewal project

A project planned and undertaken by an LPA [Local Public Agency] in an urban renewal area with Federal financial and technical assistance under Title I of the Housing Act of 1949. A project may involve slum clearance and redevelopments rehabilitation and conservation, or a combination of both. It may include acquisition of land, relocation of displaced site occupants, site clearance, installation of site improvements, rehabilitation of properties and disposition of acquired land for redevelopment in accordance with the Urban Renewal Plan. (US Dept of HUD)

urbanization

To become urban in nature or character; residential, commercial, and industrial development. (US Dept of the Interior- Bureau of Reclamation)

urbanized area

Area that contains a city of 50,000 or more population plus incorporated surrounding areas meeting size or density criteria as defined by the U.S. 19: Census. (US Dept of Transportation- Federal Highway Administration)

US Army Corps of Engineers

(aka USACE) The United States Army Corps of Engineers provides quality, responsive engineering services to the nation which includes planning, designing, building and operating water resources and other civil works projects; designing and managing the construction of military facilities for the Army and Air Force; and providing design and construction management support for other Defense and federal agencies. (US Dept of the Interior- Bureau of Reclamation)

US Census Bureau

Serves as the leading source of quality data about our nation's people and economy. (US Dept of HUD)

US Central

The wholesale corporate credit union. (National Credit Union Administration)

US citizen

An individual who resides as a citizen in any of the 50 States, the District of Columbia, the Commonwealth of Puerto Rico, the U.S. Virgin islands, Guam, American Samoa, the Commonwealth of the Northern Marianas, the Federated States of Micronesia, the Republic of Palau, or the Republic of the Marshall Islands. (US Dept of Agriculture- Rural Development)

US Code

Contains a consolidation and codification of all general and permanent laws of the U.S. (USCG1) (US Dept of Transportation- Federal Highway Administration) The official compilation of most general and permanent public laws of the United States that are currently in force, organized by subject matter into 50 titles. The U.S. Code collates the original law with subsequent amendments and deletes language that has been repealed or superseded, so as to provide the current text of the law. The U.S. Code is updated every six years, but supplements are published regularly to incorporate changes to statutes between updates. (Glossary of Statutory, Legislative and Regulatory Terms )

US Department of Housing and Urban Development

(aka HUD) Established in 1965, HUD's mission is to increase homeownership, support community development, and increase access to affordable housing free from discrimination. To fulfill this mission, HUD will embrace high standards of ethics, management and accountability and forge new partnerships � particularly with faith-based and community organizations � that leverage resources and improve HUD's ability to be effective on the community level. (US Dept of HUD)

US Geological Survey

The USGS serves the Nation by providing reliable scientific information to describe and understand the earth; minimize loss of life and property from natural disasters; manage water, biological, energy, and mineral resources; and enhance and protect our quality of life. The agency that monitors streamflows, river hydrology, and seismic activity. (US Dept of the Interior- Bureau of Reclamation)

US savings bond

A nontransferable, registered bond issued by the U.S. government in denominations of $50 to $10,000. (Federal Reserve Education)

US Territories

Include Samoa, Guam, the Northern Marianas, Puerto Rico and the Virgin Islands. (FHWA2) (US Dept of Transportation- Federal Highway Administration)

US Treasury securities

Interest-bearing obligations of the U.S. government issued by the U.S. Department of the Treasury as a means of borrowing money to meet government expenditures not covered by tax revenues. There are three types of marketable Treasury securities-bills, notes and bonds. (Federal Reserve Education) Refers to the Federal Reserve Bank of San Francisco, which is the Twelfth District in the Federal Reserve System. �L� is the official letter for the Twelfth District seal, being the twelfth letter of the alphabet. (Federal Reserve Bank- SF) Direct obligations of the U.S. Government, issued by the U.S. Treasury�s Bureau of Public Debt as a means of financing the Federal Government. There are three types of securities issued: Treasury bills (T-bills), Treasury bonds, and Treasury notes. (Federal Reserve Bank- SF)

US Trustee

An officer of the Justice Department responsible for supervising the administration of bankruptcy cases, estates, and trustees; monitoring plans and disclosure statements; monitoring creditors' committees; monitoring fee applications; and performing other statutory duties. Compare, bankruptcy administrator. (US Courts (Federal Courts)- Bankruptcy Basics)

usable storage

The volume normally available for release from a reservoir below the stage of the maximum controllable level. (Thomas and Harbeck, 1956, p. 13.) (US Dept of the Interior- US Geological Survey)

usable storage capacity

The quantity of ground water of acceptable quality that can be economically withdrawn from storage. (US Dept of the Interior- Bureau of Reclamation)

USDA

U.S. Department of Agriculture (US EPA- Pesticides)

use value

The economic benefit associated with the physical use of a resource, usually measured by the consumer surplus or net economic value associated with such use. The contingent value method is one technique used to estimate use value. (US Dept of the Interior- Bureau of Reclamation)

use-dependant properties

(aka management-dependent properties) Soil properties that show change and respond to use and management of the soil, such as soil organic matter levels and aggregate stability. This is a narrower term than dynamic soil properties which encompasses all changes on the human time scale including those induced by natural disturbances or cycles. (US Dept of Agriculture- Natural Resources Conservation Service)

useful heat

Heat stored above room temperature (in a solar heating system). (US Dept of Energy)

useful life

The span of time over which a property can be used or can provide benefits to its owner. (HardwickAssociates)

use-invariant properties

Soil properties that show little change over time and are not affected by use and management of the soil, such as mineralogy and particle size distribution. (US Dept of Agriculture- Natural Resources Conservation Service)

user day

The participation in a recreation activity at a given resource during a 24-hour period by one person. (US Dept of the Interior- Bureau of Reclamation)

user fee

A fee which is collected only from those persons who use a particular service, as opposed to one collected from the public in general. User fees generally vary in proportion to the degree of use of the service. (US Dept of the Interior- Bureau of Reclamation)

usury

Charging an illegally high interest rate on a loan. (Help With My Bank)

usury rates

The maximum rate of interest lenders may charge borrowers. �The usury rate is generally set by State law. (Help With My Bank)

utility

A regulated entity which exhibits the characteristics of a natural monopoly (also referred to as a power provider). For the purposes of electric industry restructuring, "utility" refers to the regulated, vertically-integrated electric company. "Transmission utility" refers to the regulated owner/operator of the transmission system only. "Distribution utility" refers to the regulated owner/operator of the distribution system which serves retail customers. (US Dept of Energy) A regulated entity which exhibits the characteristics of a natural monopoly. For the purposes of electric industry restructuring, "utility" refers to the regulated, vertically integrated electric company. "Transmission utility" refers to the regulated owner/operator of the transmission system only. "Distribution utility" refers to the regulated owner/operator of the distribution system which serves retail customers. (US Dept of the Interior- Bureau of Reclamation)

utility costs

Periodic housing costs for water, electricity, natural gas, heating oil, etc. (Ginnie Mae)

UV

Ultraviolet. (Energycodes.gov)

U-Value

(aka Coefficient of Heat Transmission) The reciprocal of R-Value. The lower the number, the greater the heat transfer resistance (insulating) characteristics of the material. (US Dept of Energy)