CRRN ACTUAL TEST PAPER 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
▶ Which of the following describes domestic wastewater as it leaves a
home?? Answer:fresh, light in color, has dissolved oxygen
▶ Which of the following are problems caused by malfunctioning septic
tank systems?? Answer:surface water pollution, groundwater
contamination, and standing sewage in neighborhoods
▶ An inorganic chemical that affects human health is? Answer:nitrate
▶ Parasites (helminths) found in untreated sewage include ________.?
Answer:hookworm, round worms, and tapeworms
▶ Viruses are responsible for such diseases as? Answer:poliomyelitis and
infectious hepatitis
▶ A type of bacteria that indicates sewage contamination is ________.?
Answer:fecal coliform
▶ Protozoa are very simple animal organisms that may cause ________.?
Answer:amoeba dysentery and Giardiasis
▶ Waterborne diseases that spread by pathogenic bacteria include
_________.? Answer:typhoid, cholera, and dysentery
▶ Microorganisms in wastewater include __________.? Answer:bacteria,
viruses, protozoa and helminths.
▶ Microorganisms that cause disease are called _________.?
Answer:pathogens
▶ Domestic wastewater contains microorganisms that are capable of
causing _________.? Answer:infectious diseases
▶ An official inspector of a new OSSF is a(n) _______.?
Answer:designated representative
,▶ A trench requires 430 cubic feet of gravel. How many cubic yards must
be purchased?? Answer:16 cubic yards
▶ A septic tank had a working volume of 31 cubic feet. How many gallons
does this septic tank hold?? Answer:approx. 232 gals
▶ The area of a lot is 20,076 square feet. What is the area of this lot in
acres?? Answer:0.46 acres
▶ A trench measures 30 inches wide. How wide is the trench in feet??
Answer:2.5'
▶ A particular hazard that OSSF installers face that most construction
workers do not is _______.? Answer:infectious waterborne diseases
▶ List the equipment and procedures to protect a work site.? Answer:signs,
regulated speed, cones, barricade, high level flags
▶ Who can legally install a septic tank followed by a low-pressure dosing
drain field at a rental house?? Answer:Installer II
▶ Planning materials for an OSSF utilizing secondary treatment must be
prepared by a/an? Answer:PE (professional engineer) or RS (registered
sanitarian)
▶ Penalties for violating the laws, rules, or regulations covering OSSF can
be imposed under what headings? Answer:criminal, injunction,
administrative
▶ List the 9 steps of the permitting process? Answer:1) Site Evaluations
2) Selection of an OSSF
3) System must be planned
4) Professional designer (PE or RS) submits planning materials
5) Permit application and planning materials must be prepared and
submitted
6) The application and planning materials are reviewed by permitting
authority
7) Authorization or permit to construct (ATC) must be granted by permitting
authority BEFORE construction can begin
, 8) Construction begins after ATC recieved.
9) System must be inspected by permitting agency.
10) Notice of approval (NOA) and permit or license to operate will be
issued by the permitting agency when completed System has passed all
inspections.
▶ New OSSF licenses are issued for a term of ______. An individual must
complete _______ of TCEQ-approved continuing education courses in
order to renew license.? Answer:3 years, 24 hours
▶ What is needed to pre-qualify for an exam?? Answer:submitting an
application and notarized experience statements, paying class and
application fees, and successfully completing the appropriate training
course
▶ Individuals working as a __________ or in any capacity for an OSSF
___________ cannot work as an Installer, Designer for a fee, or private
Site Evaluator within the jurisdiction of the permitting authority.?
Answer:Designated representative (DR), permitting authority
▶ List the OSSF licenses that require previous experience?
Answer:installer II, Site evaluator (SE), and Maintenance Provider (MP)
▶ An individual who visits a site and conducts soil evaluations and a site
survey is a(n) __________.? Answer:site evaulator
▶ An individual who holds a valid license from the TCEQ and who is
compensated by another individual to construct, install, alter, or repair an
OSSF is a(n) _________.? Answer:installer
▶ The _______ is responsible for reviewing permit applications, site
evaluations, planning materials, and conducting inspections of OSSFs?
Answer:DR (designated representative)
▶ _______ adopted the current OSSF Rules in 1997 and revised them
several times? Answer:TCEQ
▶ Class II soils include the USDA classes of _________ and
__________.? Answer:sandy loam, loam
WITH SOLUTIONS GRADED A+
▶ Which of the following describes domestic wastewater as it leaves a
home?? Answer:fresh, light in color, has dissolved oxygen
▶ Which of the following are problems caused by malfunctioning septic
tank systems?? Answer:surface water pollution, groundwater
contamination, and standing sewage in neighborhoods
▶ An inorganic chemical that affects human health is? Answer:nitrate
▶ Parasites (helminths) found in untreated sewage include ________.?
Answer:hookworm, round worms, and tapeworms
▶ Viruses are responsible for such diseases as? Answer:poliomyelitis and
infectious hepatitis
▶ A type of bacteria that indicates sewage contamination is ________.?
Answer:fecal coliform
▶ Protozoa are very simple animal organisms that may cause ________.?
Answer:amoeba dysentery and Giardiasis
▶ Waterborne diseases that spread by pathogenic bacteria include
_________.? Answer:typhoid, cholera, and dysentery
▶ Microorganisms in wastewater include __________.? Answer:bacteria,
viruses, protozoa and helminths.
▶ Microorganisms that cause disease are called _________.?
Answer:pathogens
▶ Domestic wastewater contains microorganisms that are capable of
causing _________.? Answer:infectious diseases
▶ An official inspector of a new OSSF is a(n) _______.?
Answer:designated representative
,▶ A trench requires 430 cubic feet of gravel. How many cubic yards must
be purchased?? Answer:16 cubic yards
▶ A septic tank had a working volume of 31 cubic feet. How many gallons
does this septic tank hold?? Answer:approx. 232 gals
▶ The area of a lot is 20,076 square feet. What is the area of this lot in
acres?? Answer:0.46 acres
▶ A trench measures 30 inches wide. How wide is the trench in feet??
Answer:2.5'
▶ A particular hazard that OSSF installers face that most construction
workers do not is _______.? Answer:infectious waterborne diseases
▶ List the equipment and procedures to protect a work site.? Answer:signs,
regulated speed, cones, barricade, high level flags
▶ Who can legally install a septic tank followed by a low-pressure dosing
drain field at a rental house?? Answer:Installer II
▶ Planning materials for an OSSF utilizing secondary treatment must be
prepared by a/an? Answer:PE (professional engineer) or RS (registered
sanitarian)
▶ Penalties for violating the laws, rules, or regulations covering OSSF can
be imposed under what headings? Answer:criminal, injunction,
administrative
▶ List the 9 steps of the permitting process? Answer:1) Site Evaluations
2) Selection of an OSSF
3) System must be planned
4) Professional designer (PE or RS) submits planning materials
5) Permit application and planning materials must be prepared and
submitted
6) The application and planning materials are reviewed by permitting
authority
7) Authorization or permit to construct (ATC) must be granted by permitting
authority BEFORE construction can begin
, 8) Construction begins after ATC recieved.
9) System must be inspected by permitting agency.
10) Notice of approval (NOA) and permit or license to operate will be
issued by the permitting agency when completed System has passed all
inspections.
▶ New OSSF licenses are issued for a term of ______. An individual must
complete _______ of TCEQ-approved continuing education courses in
order to renew license.? Answer:3 years, 24 hours
▶ What is needed to pre-qualify for an exam?? Answer:submitting an
application and notarized experience statements, paying class and
application fees, and successfully completing the appropriate training
course
▶ Individuals working as a __________ or in any capacity for an OSSF
___________ cannot work as an Installer, Designer for a fee, or private
Site Evaluator within the jurisdiction of the permitting authority.?
Answer:Designated representative (DR), permitting authority
▶ List the OSSF licenses that require previous experience?
Answer:installer II, Site evaluator (SE), and Maintenance Provider (MP)
▶ An individual who visits a site and conducts soil evaluations and a site
survey is a(n) __________.? Answer:site evaulator
▶ An individual who holds a valid license from the TCEQ and who is
compensated by another individual to construct, install, alter, or repair an
OSSF is a(n) _________.? Answer:installer
▶ The _______ is responsible for reviewing permit applications, site
evaluations, planning materials, and conducting inspections of OSSFs?
Answer:DR (designated representative)
▶ _______ adopted the current OSSF Rules in 1997 and revised them
several times? Answer:TCEQ
▶ Class II soils include the USDA classes of _________ and
__________.? Answer:sandy loam, loam
