Septic Installer Test For
Washington State (WOSSA)
Practice Exam Questions
And All Complete Solutions.
American National Standards Institute - 📌📌- ANSI
biochemical oxygen demand, typically expressed in mg/L. - 📌📌- BOD
Carbonaceous Biochemical Oxygen Demand, expressed in mg/L. - 📌📌- CBOD
Fecal Coliform, expressed in number of colonies 100/ml. - 📌📌- FC
large on-site sewage system - 📌📌- LOSS
Nation Sanitation Foundation International - 📌📌- NSF
📌📌
Oils and Grease, component of sewage typically originating from food stuffs
(animal fats of vegetable oils) expressed in mg/L. - - O&G
Recommended Standards and Guidance - 📌📌- RS&G
a subsurface soil absorption system - 📌📌- SSAS
Technical Advisory Committee established in WAC 247-272A-0400 - 📌📌- TAC
Total Nitrogen, expressed in mg/L. - 📌📌- TN
📌📌
Total Suspended Solids. A measure of the total suspended solids in a given
solution, expressed in mg/L. - - TSS
United States Environmental Protection Agency - 📌📌- USEPA
📌📌
a commercial product added to an on-site sewage system intended to affect the
performance or aesthetics of an on-site sewage system - - Additive
Acceptable to the authority having jurisdiction. Local health officer or the
,that part of the horizontal piping of a drainage system which starts from the end
of the building drain and which receives the discharge of the building drain and
conveys it to a public sewer, private sewer, individual sewage disposal system or
other point of disposal. It begins two feet outside the building wall and conveys
📌📌
sewage from the building drain to the remaining portions of the on-site sewage
system. - - Building Sewer
📌📌
a covered hole or pit for receiving drainage or sewage, as from a house allowing
liquid to seep into the surronding rock or soil - - Cesspool
an on-site sewage system of component meeting rules of: New construction
requirements
📌📌
Approved and installed within previous requirements
Permitted by WAC-246-272A-0420 - - Conforming System
Soil placed over dispersal component, made up of mineral material with no
📌📌
greater than 10% organic content. Cover may contain organic surface material,
an organic landscaper to help reduce and contain soil erosion. - - Cover
Material
a naturally occurring or artificially formed slope greater than one hundred percent
📌📌
(forty-five degrees) and extending vertically at least five from the toe of the slope
to top of the slope. - - Cuts and Banks
Washington State Department of Health - 📌📌- Department
📌📌
Person who matches site and soil characteristics with approved components -
- Designer
Means the maximum volume of sewage a residence, structure or other facility is
estimated to generate in a twenty-four hour period. It incorporates both an
operating capacity and a surge capacity for the system during periodic heavy use
📌📌
events. The sizing and design of a on-site sewage system component is based
on the design flow. - - Design Flow
📌📌
The creation of a residence, structure, facility, subdivision, area, or similar activity
resulting in the production of sewage. - - Development
📌📌
The process of destroying pathogens in sewage through the application of
chlorination, ultra-violent light, or ozonation. - - Disinfection
📌📌
any arrangement of equipment and/or material that distributes sewage within and
on-site sewage system. - - Distribution Technology
subsurface soil absorption system, and soil dispersal component - 📌📌-
,more than one percent by weight passing through a US No. 200 Sieve. - 📌📌-
Drainrock
liquid waste discharged to a septic tank or other on-site sewage system - 📌📌-
Effluent
📌📌
means a clay soil with the mineralogy of clay particles. Clay particles expand
when absorbing water - - Expanding Clay
📌📌
a change in residence, facility or site that results in the quantity of sewage to
exceed the original design - - expansion
soils with 60% or more, but not less than 90% rock fragments by volume. - 📌📌-
Extremely gravely
a condition of an on-site sewage component that threatens the public health by
📌📌
inadequately treating the sewage, or creating a potential direct or indirect contact
between sewage and the public. - - Failure
📌📌
bacteria found in the intestinal tracts of warm-blooded animals that are cultured
in standard tests. Generally expressed as colonies per 100 ml. - - Fecal
coliform bacteria
Soils with 15% or more, but less than 35% rock fragments by volume. - 📌📌-
Gravely
📌📌
Sewage from bathtubs, showers, bathroom sinks, kitchen sinks, washing
machines, and dishwashers. - - Gray Water
📌📌
Subsurface water in the zone of saturated soils, seasonally, permanently, or as
the result of the tides. - - Ground water
an on-site sewage system that a holding tank with no discharge outlet - 📌📌-
Holding tank sewage system
📌📌
the amount of effluent applied to a given treatment step, expressed as gallons
per square foot per day, (gal./sq.ft./day) - - hydraulic loading rate
📌📌
Waste from production of consumer goods, mining, agriculture and petroleum
extraction and refining - - industrial waste
Surface within a treatment component or soil dispersal component to which
📌📌
effluent is applied and through which effluent moves into original, undisturbed soil
or other porous treatment media. - - Infiltrative surface
, 📌📌
The actions necessary to keep the on-site sewage system components
functioning as designed - - Maintenance
📌📌
the condition of a soil layer in which the layer appears as a coherent of solid
mass not separated into peds of any kind - - Massive structure
Well- formed distinct peds evident in undisturbed soil. When disturbed, soil
📌📌
material parts into mixture of whole peds, broken peds, and material that is not in
peds. - - Moderated structure
Periodic or continuous surveillance of on-site sewage system, which is performed
📌📌
by observations and measurements, to determine if the system is functioning as
intended and if system is in need of maintenance. - - Monitoring
An integrated system of components , located on or nearby the property it
serves. that conveys, stores, treats, and/or provides subsurface soil treatment
📌📌
and dispersal of sewage. It consists of a collection system, a treatment
component or treatment sequence, and a soil dispersal component. - -
On-site sewage system (OSS)
the average daily volume of sewage an OSS can treat and disperse on a
📌📌
sustained basis. The operating capacity, which is lower than design flow, is an
integral part of the design and is used as an index in OSS monitoring. - -
Operating capacity
📌📌
The point on the bank or shore where water is present often enough so that the
upland begins to look different from the lake or stream bed. - - Ordinary
High Water Mark
📌📌
a unit of soil structure such as blocks, columns, granule, plate or prism formed by
natural process - - Ped
📌📌
Any individual, partnership, corporation, association, government or
governmental subdivision or agency or other entity: - - Person
📌📌
A planned combination of diverse land uses, such as housing, recreation, and
shopping, in one contained development or subdivision. - - Planned Unit
Development
📌📌
Thin, flat plates of soil that lie horizontally. Usually found in compacted soil. This
type of soil will impede the vertical movement of water. - - Platy structure
📌📌
a system of small diameter pipes equally distributing effluent throughout a SASS.
Can include a drip system - - Pressure distribution
Washington State (WOSSA)
Practice Exam Questions
And All Complete Solutions.
American National Standards Institute - 📌📌- ANSI
biochemical oxygen demand, typically expressed in mg/L. - 📌📌- BOD
Carbonaceous Biochemical Oxygen Demand, expressed in mg/L. - 📌📌- CBOD
Fecal Coliform, expressed in number of colonies 100/ml. - 📌📌- FC
large on-site sewage system - 📌📌- LOSS
Nation Sanitation Foundation International - 📌📌- NSF
📌📌
Oils and Grease, component of sewage typically originating from food stuffs
(animal fats of vegetable oils) expressed in mg/L. - - O&G
Recommended Standards and Guidance - 📌📌- RS&G
a subsurface soil absorption system - 📌📌- SSAS
Technical Advisory Committee established in WAC 247-272A-0400 - 📌📌- TAC
Total Nitrogen, expressed in mg/L. - 📌📌- TN
📌📌
Total Suspended Solids. A measure of the total suspended solids in a given
solution, expressed in mg/L. - - TSS
United States Environmental Protection Agency - 📌📌- USEPA
📌📌
a commercial product added to an on-site sewage system intended to affect the
performance or aesthetics of an on-site sewage system - - Additive
Acceptable to the authority having jurisdiction. Local health officer or the
,that part of the horizontal piping of a drainage system which starts from the end
of the building drain and which receives the discharge of the building drain and
conveys it to a public sewer, private sewer, individual sewage disposal system or
other point of disposal. It begins two feet outside the building wall and conveys
📌📌
sewage from the building drain to the remaining portions of the on-site sewage
system. - - Building Sewer
📌📌
a covered hole or pit for receiving drainage or sewage, as from a house allowing
liquid to seep into the surronding rock or soil - - Cesspool
an on-site sewage system of component meeting rules of: New construction
requirements
📌📌
Approved and installed within previous requirements
Permitted by WAC-246-272A-0420 - - Conforming System
Soil placed over dispersal component, made up of mineral material with no
📌📌
greater than 10% organic content. Cover may contain organic surface material,
an organic landscaper to help reduce and contain soil erosion. - - Cover
Material
a naturally occurring or artificially formed slope greater than one hundred percent
📌📌
(forty-five degrees) and extending vertically at least five from the toe of the slope
to top of the slope. - - Cuts and Banks
Washington State Department of Health - 📌📌- Department
📌📌
Person who matches site and soil characteristics with approved components -
- Designer
Means the maximum volume of sewage a residence, structure or other facility is
estimated to generate in a twenty-four hour period. It incorporates both an
operating capacity and a surge capacity for the system during periodic heavy use
📌📌
events. The sizing and design of a on-site sewage system component is based
on the design flow. - - Design Flow
📌📌
The creation of a residence, structure, facility, subdivision, area, or similar activity
resulting in the production of sewage. - - Development
📌📌
The process of destroying pathogens in sewage through the application of
chlorination, ultra-violent light, or ozonation. - - Disinfection
📌📌
any arrangement of equipment and/or material that distributes sewage within and
on-site sewage system. - - Distribution Technology
subsurface soil absorption system, and soil dispersal component - 📌📌-
,more than one percent by weight passing through a US No. 200 Sieve. - 📌📌-
Drainrock
liquid waste discharged to a septic tank or other on-site sewage system - 📌📌-
Effluent
📌📌
means a clay soil with the mineralogy of clay particles. Clay particles expand
when absorbing water - - Expanding Clay
📌📌
a change in residence, facility or site that results in the quantity of sewage to
exceed the original design - - expansion
soils with 60% or more, but not less than 90% rock fragments by volume. - 📌📌-
Extremely gravely
a condition of an on-site sewage component that threatens the public health by
📌📌
inadequately treating the sewage, or creating a potential direct or indirect contact
between sewage and the public. - - Failure
📌📌
bacteria found in the intestinal tracts of warm-blooded animals that are cultured
in standard tests. Generally expressed as colonies per 100 ml. - - Fecal
coliform bacteria
Soils with 15% or more, but less than 35% rock fragments by volume. - 📌📌-
Gravely
📌📌
Sewage from bathtubs, showers, bathroom sinks, kitchen sinks, washing
machines, and dishwashers. - - Gray Water
📌📌
Subsurface water in the zone of saturated soils, seasonally, permanently, or as
the result of the tides. - - Ground water
an on-site sewage system that a holding tank with no discharge outlet - 📌📌-
Holding tank sewage system
📌📌
the amount of effluent applied to a given treatment step, expressed as gallons
per square foot per day, (gal./sq.ft./day) - - hydraulic loading rate
📌📌
Waste from production of consumer goods, mining, agriculture and petroleum
extraction and refining - - industrial waste
Surface within a treatment component or soil dispersal component to which
📌📌
effluent is applied and through which effluent moves into original, undisturbed soil
or other porous treatment media. - - Infiltrative surface
, 📌📌
The actions necessary to keep the on-site sewage system components
functioning as designed - - Maintenance
📌📌
the condition of a soil layer in which the layer appears as a coherent of solid
mass not separated into peds of any kind - - Massive structure
Well- formed distinct peds evident in undisturbed soil. When disturbed, soil
📌📌
material parts into mixture of whole peds, broken peds, and material that is not in
peds. - - Moderated structure
Periodic or continuous surveillance of on-site sewage system, which is performed
📌📌
by observations and measurements, to determine if the system is functioning as
intended and if system is in need of maintenance. - - Monitoring
An integrated system of components , located on or nearby the property it
serves. that conveys, stores, treats, and/or provides subsurface soil treatment
📌📌
and dispersal of sewage. It consists of a collection system, a treatment
component or treatment sequence, and a soil dispersal component. - -
On-site sewage system (OSS)
the average daily volume of sewage an OSS can treat and disperse on a
📌📌
sustained basis. The operating capacity, which is lower than design flow, is an
integral part of the design and is used as an index in OSS monitoring. - -
Operating capacity
📌📌
The point on the bank or shore where water is present often enough so that the
upland begins to look different from the lake or stream bed. - - Ordinary
High Water Mark
📌📌
a unit of soil structure such as blocks, columns, granule, plate or prism formed by
natural process - - Ped
📌📌
Any individual, partnership, corporation, association, government or
governmental subdivision or agency or other entity: - - Person
📌📌
A planned combination of diverse land uses, such as housing, recreation, and
shopping, in one contained development or subdivision. - - Planned Unit
Development
📌📌
Thin, flat plates of soil that lie horizontally. Usually found in compacted soil. This
type of soil will impede the vertical movement of water. - - Platy structure
📌📌
a system of small diameter pipes equally distributing effluent throughout a SASS.
Can include a drip system - - Pressure distribution
