TM 5-814-9
Hardstand
Potable water
Impervious surface, either bituminous or concrete, used as a
Water supply that is safe for human consumption.
pavement for pedestrian and/or vehicular traffic.
Preparation area
Hydraulic loading
Paved area for troops to remove trash from vehicle interiors,
Volume of a liquid per unit time applied to a given system or
plug drain holes, open bilge pump discharge lines, and other
treatment process.
tasks prior to the prewash or wash facilities.
Hydrogen ion concentration (ph)
Primary treatment
Measure of the number of hydrogen ions in a solution indicting
The first phase in treating wastewater in which all debris and
acidity/alkalinity.
settleable solids, along with floating materials (e.g., oil and
grease) are removed.
Impervious
Roller-compacted concrete
Term used to describe the condition in which water or some
other fluid cannot easily pass through a material such as soil.
A stiff concrete, low in water content which is placed with a
paver-compactor and then rolled.
Inflow
Sanitary plant
Water or wastewater entering a basin, pond, channel, or other
storage or collection facility.
Wastewater treatment plant designed to process a municipal
waste (sanitary, commercial, or industrial).
Influent
Secondary treatment
Liquid flowing into a container, basin, or tank.
Second phase in wastewater treatment in which the major
Interior wash
portion of the suspended solids and a portion of dissolved solids
Low-pressure, low-flow volume of water used to clean the
are removed by physical and/or biological means.
interior of tactical vehicles, such as truck beds and cab areas.
Sediment basin
Intermittent sand filter
Receptacle immediately downstream of the wash stations and
Filter system with a granular medium (sand and/or gravel)
prewash, if provided, designed to settle and contain solids from
which is flooded at given time intervals with a water or
a CVWFs wastewater.
wastewater for treatment.
Settling test
Lagoon
Assay to determine the rate at which a particular material settles
Pond-like body of water used to treat industrial, commercial,
from a quiescent water.
and sanitary wastewaters.
Staff gauge
Loading
Device for measuring water depth in a basin, pond, or lagoon.
Rate at which a filter charge is applied to a filter.
Stop
Makeup water
Device used to limit the movement of a piece of equipment.
Water added to a system or process to compensate for the
amound of water lost due to leakage, percolation, evaporation,
Surface water
release, overflows, usage, or similar action.
Water found on the surface of the ground due to rainfall or snow
melt; includes incidental water (e.g., that dripping from
Manhole
vehicles).
Structure, usually located at the junction of two or more
Suspended solids
underground pipes, that-allows access to pipes for inspection
and maintenance.
Weight unit of measurement of the nonsettling particles or
solids in a dispersed state in the wastewater.
Oil skimmer
Total dissolved solids
Device used for removing oil and grease from a water surface.
Weight unit of measurement indicating the sum of all dissolved
Percolation
solids (volatile and nonvolatile) in a water or wastewater.
Downward movement of a liquid through a soil.
Transportation motor pool
Permeability
Facility that provides and maintains commercial vehicles for
Term describing the ability of water to move through a soil
daily use at an installation (cars, buses, trucks, etc.).
when the soil is saturated.
Turbidity
Measure of water clarity.
Pond
Engineered impoundment containing raw or partially treated
Usage factor
wastewater in which aerobic and/or anaerovic stabilization
Estimated percentage of time that the maximum water usuage
occurs (also see lagoon).
condition will exist at a CVWF.
Porosity
Valve box
Ratio, usually expressed as a percentage, or the volume of voids
A premanufactured structure made of concrete, steel, plastic, or
in a given soil mass to the total volume of the soil mass.
fiberglass, which is placed around an underground valve.
Glossary-4
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