PASSPOINT PRO
PROFESSIONAL LICENSING EXAM PREP
PRACTICE EXAM
New Hampshire Septic Installer
Exam 2
System Installation & Construction
100 IMMEDIATE ANSWERS CONSTRUCTION STANDARDS
QUESTIONS FORMAT FOCUS
WHAT THIS PRODUCT COVERS
Septic tanks, bedding & backfill
Pumps, alarms & distribution boxes
Conduits, trenches & pressure distribution
CURRENT RULE BASIS
RSA 485-A | Env-Wq 1000
Practice. Understand. Perform.
,PASSPOINT PRO NH SEPTIC INSTALLER - EXAM 2
HOW TO USE THIS RESOURCE
This PassPoint Pro resource contains 100 original multiple-choice questions. Answers and detailed rationales follow each question
for active review. Compare every field decision with the approved plan and current New Hampshire requirements.
RULE BASIS RSA 485-A | Env-Wq 1000
PRACTICE QUESTIONS
May a floor drain discharge to an ISDS without separate approval under the applicable
1
groundwater-discharge rules?
A Yes in any garage
B Yes if the property is residential
C Yes if the drain is trapped
D No
ANSWER: D - No
Rationale: Env-Wq 1012.06 states that floor drains shall not be used unless approved under Env-Wq 402 or a predecessor rule. Floor
drains can introduce contaminants that are not appropriate for a normal domestic ISDS. Installers should verify the intended waste stream
before connecting such a drain.
Rule reference: Env-Wq 1012.06
What minimum liquid depth applies to a ledge tank compartment?
2
A 18 inches
B 40 inches
C 30 inches
D 48 inches
ANSWER: C - 30 inches
Rationale: Ledge tanks must provide at least 30 inches of liquid depth in each compartment. Their special geometry is paired with other
requirements, including increased total volume. Installers should not apply standard-tank dimensional assumptions to a ledge tank without
checking the dedicated rule.
Rule reference: Env-Wq 1010.10
PassPoint Pro | New Hampshire Septic System Installer Page 2
,PASSPOINT PRO NH SEPTIC INSTALLER - EXAM 2
When two or more septic tanks are used in series, what minimum share of total required volume
3
must the first tank contain?
A Exactly one-half
B At least one-quarter
C At least two-thirds
D At least 90%
ANSWER: C - At least two-thirds
Rationale: Env-Wq 1010.12 requires the first tank in a series to contain at least two-thirds of total required septic-tank volume. The first tank
receives the strongest solids load, so sufficient primary capacity is essential. The remaining required capacity may be provided by
downstream tank volume.
Rule reference: Env-Wq 1010.12
During basal-area preparation for certain filled systems, how much fill should the installer maintain
4
between equipment tracks and the prepared surface?
A No protective fill is needed
B 18 to 24 inches
C 8 to 12 inches
D 1 to 2 inches
ANSWER: C - 8 to 12 inches
Rationale: The rule requires the installer to maintain 8 to 12 inches of fill between equipment tracks and the prepared surface in the
specified construction context. This helps avoid compaction and smearing of the infiltrative surface. Protecting soil structure is essential to
system performance.
Rule reference: Env-Wq 1019/filled-system construction requirements
How should pump and alarm electrical circuits be arranged?
5
A Both must share one circuit
B The alarm must run only from the pump motor leads
C The pump and alarm systems should be on separate circuits
D No electrical separation is required
ANSWER: C - The pump and alarm systems should be on separate circuits
Rationale: Env-Wq 1013.01 requires the pump and alarm system to be on separate electrical circuits. If the pump circuit fails, an
independently powered alarm is more likely to remain capable of warning occupants. This separation is a key reliability principle in pumped
septic systems.
Rule reference: Env-Wq 1013.01
PassPoint Pro | New Hampshire Septic System Installer Page 3
, PASSPOINT PRO NH SEPTIC INSTALLER - EXAM 2
A two-tank series must provide 1,800 gallons total. What is the minimum capacity of the first tank
6
under the two-thirds rule?
A 600 gallons
B 1,800 gallons
C 1,200 gallons
D 900 gallons
ANSWER: C - 1,200 gallons
Rationale: Two-thirds of 1,800 gallons is 1,200 gallons. The first tank must contain at least that much of the total required capacity. This
ensures adequate primary settling capacity before wastewater reaches the downstream tank.
Rule reference: Env-Wq 1010.12
What is the maximum lift thickness for septic-tank backfill when the manufacturer does not require
7
a smaller lift?
A 24 inches
B There is no limit
C 12 inches
D 36 inches
ANSWER: C - 12 inches
Rationale: Env-Wq 1010.04 requires backfill to be placed in manufacturer-specified lifts, but never more than 12 inches. Controlled lifts help
achieve stable support without damaging the tank. Aggressive or uneven backfilling can compromise structural integrity and watertightness.
Rule reference: Env-Wq 1010.04
At a typical water-line and sewer-line crossing, how far below the water line should the sewer line
8
be?
A At least 12 inches
B At least 36 inches in every case
C At least 6 inches
D At least 18 inches
ANSWER: D - At least 18 inches
Rationale: The normal crossing standard places the sewer line at least 18 inches below the water line. Alternate arrangements are possible
when required sleeving or encasement conditions are met. The separation reduces contamination risk if the sewer line leaks.
Rule reference: Env-Wq 1009.02
PassPoint Pro | New Hampshire Septic System Installer Page 4
PROFESSIONAL LICENSING EXAM PREP
PRACTICE EXAM
New Hampshire Septic Installer
Exam 2
System Installation & Construction
100 IMMEDIATE ANSWERS CONSTRUCTION STANDARDS
QUESTIONS FORMAT FOCUS
WHAT THIS PRODUCT COVERS
Septic tanks, bedding & backfill
Pumps, alarms & distribution boxes
Conduits, trenches & pressure distribution
CURRENT RULE BASIS
RSA 485-A | Env-Wq 1000
Practice. Understand. Perform.
,PASSPOINT PRO NH SEPTIC INSTALLER - EXAM 2
HOW TO USE THIS RESOURCE
This PassPoint Pro resource contains 100 original multiple-choice questions. Answers and detailed rationales follow each question
for active review. Compare every field decision with the approved plan and current New Hampshire requirements.
RULE BASIS RSA 485-A | Env-Wq 1000
PRACTICE QUESTIONS
May a floor drain discharge to an ISDS without separate approval under the applicable
1
groundwater-discharge rules?
A Yes in any garage
B Yes if the property is residential
C Yes if the drain is trapped
D No
ANSWER: D - No
Rationale: Env-Wq 1012.06 states that floor drains shall not be used unless approved under Env-Wq 402 or a predecessor rule. Floor
drains can introduce contaminants that are not appropriate for a normal domestic ISDS. Installers should verify the intended waste stream
before connecting such a drain.
Rule reference: Env-Wq 1012.06
What minimum liquid depth applies to a ledge tank compartment?
2
A 18 inches
B 40 inches
C 30 inches
D 48 inches
ANSWER: C - 30 inches
Rationale: Ledge tanks must provide at least 30 inches of liquid depth in each compartment. Their special geometry is paired with other
requirements, including increased total volume. Installers should not apply standard-tank dimensional assumptions to a ledge tank without
checking the dedicated rule.
Rule reference: Env-Wq 1010.10
PassPoint Pro | New Hampshire Septic System Installer Page 2
,PASSPOINT PRO NH SEPTIC INSTALLER - EXAM 2
When two or more septic tanks are used in series, what minimum share of total required volume
3
must the first tank contain?
A Exactly one-half
B At least one-quarter
C At least two-thirds
D At least 90%
ANSWER: C - At least two-thirds
Rationale: Env-Wq 1010.12 requires the first tank in a series to contain at least two-thirds of total required septic-tank volume. The first tank
receives the strongest solids load, so sufficient primary capacity is essential. The remaining required capacity may be provided by
downstream tank volume.
Rule reference: Env-Wq 1010.12
During basal-area preparation for certain filled systems, how much fill should the installer maintain
4
between equipment tracks and the prepared surface?
A No protective fill is needed
B 18 to 24 inches
C 8 to 12 inches
D 1 to 2 inches
ANSWER: C - 8 to 12 inches
Rationale: The rule requires the installer to maintain 8 to 12 inches of fill between equipment tracks and the prepared surface in the
specified construction context. This helps avoid compaction and smearing of the infiltrative surface. Protecting soil structure is essential to
system performance.
Rule reference: Env-Wq 1019/filled-system construction requirements
How should pump and alarm electrical circuits be arranged?
5
A Both must share one circuit
B The alarm must run only from the pump motor leads
C The pump and alarm systems should be on separate circuits
D No electrical separation is required
ANSWER: C - The pump and alarm systems should be on separate circuits
Rationale: Env-Wq 1013.01 requires the pump and alarm system to be on separate electrical circuits. If the pump circuit fails, an
independently powered alarm is more likely to remain capable of warning occupants. This separation is a key reliability principle in pumped
septic systems.
Rule reference: Env-Wq 1013.01
PassPoint Pro | New Hampshire Septic System Installer Page 3
, PASSPOINT PRO NH SEPTIC INSTALLER - EXAM 2
A two-tank series must provide 1,800 gallons total. What is the minimum capacity of the first tank
6
under the two-thirds rule?
A 600 gallons
B 1,800 gallons
C 1,200 gallons
D 900 gallons
ANSWER: C - 1,200 gallons
Rationale: Two-thirds of 1,800 gallons is 1,200 gallons. The first tank must contain at least that much of the total required capacity. This
ensures adequate primary settling capacity before wastewater reaches the downstream tank.
Rule reference: Env-Wq 1010.12
What is the maximum lift thickness for septic-tank backfill when the manufacturer does not require
7
a smaller lift?
A 24 inches
B There is no limit
C 12 inches
D 36 inches
ANSWER: C - 12 inches
Rationale: Env-Wq 1010.04 requires backfill to be placed in manufacturer-specified lifts, but never more than 12 inches. Controlled lifts help
achieve stable support without damaging the tank. Aggressive or uneven backfilling can compromise structural integrity and watertightness.
Rule reference: Env-Wq 1010.04
At a typical water-line and sewer-line crossing, how far below the water line should the sewer line
8
be?
A At least 12 inches
B At least 36 inches in every case
C At least 6 inches
D At least 18 inches
ANSWER: D - At least 18 inches
Rationale: The normal crossing standard places the sewer line at least 18 inches below the water line. Alternate arrangements are possible
when required sleeving or encasement conditions are met. The separation reduces contamination risk if the sewer line leaks.
Rule reference: Env-Wq 1009.02
PassPoint Pro | New Hampshire Septic System Installer Page 4
