WV SEPTIC INSTALLERS - Underground Install and Repair
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update
1. What is the space between the inner and outer tank wall called? -
Correct Answer: Interstice
2. A double wall tank is delivered to the site with a vacuum on the interstice.
The vacuum gauge indicates a level below the minimum level set by the
manufacturer Who should be contacted? - Correct Answer: Tank
Manufacturer
3. Which of the following factors aggravate excavation problems? - Correct
Answer: ground water and surface water, unstable soil, adjacent back filled
areas, frost, presence of released product, and vibration.
4. Which of the following factors should be considered when determining the
slope to be used for the excavation walls? - Correct Answer: soil
conditions, depth of the excavation, shoring requirements, safety
considerations
5. PEI/ RP100 recommends that tanks be set on back fill material at least ------
thick? - Correct Answer: 1 foot
,6. PEI/PR100 recommends that at least how much backfill material should be
between the tanks? - Correct Answer: 2 feet
7. PEI/RP 100 recommends that at least how much backfill material should be
between the tanks and the excavation walls? - Correct Answer: 2 feet
8. Under what conditions are placing a tank directly on a hold-down pad
permitted? - Correct Answer: No conditions
9. Paving over tanks in traffic areas should extend how far beyond the
perimeter of the tank excavation? - Correct Answer: 1 foot
10.PEI/RP100 recommends in areas where fully loaded product transport
vehicles are likely to pass over the tank area. that the reinforced concrete
over the tank be at least much thick? - Correct Answer: 8 inches
11.According to the PEI/RP 100-11 how is the maximum burial depth of a tank
measured? - Correct Answer: from the top of the tank
12.According to PEI/Rp100-11 what is the standard maximum burial depth for
fiberglass tank? - Correct Answer: 7 feet
13.According to PEI/RP100-11 what is the maximum burial depth for steel
tanks? - Correct Answer: 5 feet
,14.How far from the edge of the tank excavation should excavated material
that cannot be immediately removed be stockpiled? - Correct Answer: 2
feet
15.What are common deficiencies that adversely affect the structural integrity
and coatings of tanks? - Correct Answer: incorrect backfill, improper
placement, rocks or debris, voids under the lower quadrant of tank failure
to prevent migration of backfill materials.
16.What does PEI/Rp100-11 state are the "standard" backfill materials for
fiberglass tanks? - Correct Answer: pea gravel and crushed rock
17.When installing fiberglass tanks, the bottom of the excavation should be
covered by a minimum of ______ of suitable graded and compacted back
fill materials? - Correct Answer: 1 foot
18.According to the PEI/RP100-11 when sand is used as a backfill, what is the
recommended compaction specification? - Correct Answer: lifts,
compact each one
19.Why is measuring the deflection of fiberglass tanks important - Correct
Answer: Amanda is hot (you didn't answer this one) ;)
, 20.What is the purpose of filter fabric in a tank excavation? - Correct
Answer: designed to let water pass through without letting backfill
materials to move
21.For the purposes of calculating tank burial depth, 1 inch of reinforced
concrete over the tank is equivalent to how many inches of compacted back
fill? - Correct Answer: 1.5
22.Where must "deadman" anchors be placed to be effective? - Correct
Answer: Outside diameter of the tank
23.What are the minimum dimenstions for a bottom hold down anchorage
pad? - Correct Answer: 8 inch concrete extended 18 inches beyond
tank, and 1 foot beyond each end
24.When installing a bottom hold down pad what factors must be calculated
for each installation? - Correct Answer: thickness of the pad, aount of
concrete reinforcement, and the number and size of anchor points
25.When should vent restriction devices, often referred to as "ball and float
valves" NOT be installed on a UST system? - Correct Answer: Amanda is
the best future wife for me (you didn't answer this one)
26.What components should a monitoring well contain? - Correct Answer:
Jerome has a booty (didn't answer this one)
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update
1. What is the space between the inner and outer tank wall called? -
Correct Answer: Interstice
2. A double wall tank is delivered to the site with a vacuum on the interstice.
The vacuum gauge indicates a level below the minimum level set by the
manufacturer Who should be contacted? - Correct Answer: Tank
Manufacturer
3. Which of the following factors aggravate excavation problems? - Correct
Answer: ground water and surface water, unstable soil, adjacent back filled
areas, frost, presence of released product, and vibration.
4. Which of the following factors should be considered when determining the
slope to be used for the excavation walls? - Correct Answer: soil
conditions, depth of the excavation, shoring requirements, safety
considerations
5. PEI/ RP100 recommends that tanks be set on back fill material at least ------
thick? - Correct Answer: 1 foot
,6. PEI/PR100 recommends that at least how much backfill material should be
between the tanks? - Correct Answer: 2 feet
7. PEI/RP 100 recommends that at least how much backfill material should be
between the tanks and the excavation walls? - Correct Answer: 2 feet
8. Under what conditions are placing a tank directly on a hold-down pad
permitted? - Correct Answer: No conditions
9. Paving over tanks in traffic areas should extend how far beyond the
perimeter of the tank excavation? - Correct Answer: 1 foot
10.PEI/RP100 recommends in areas where fully loaded product transport
vehicles are likely to pass over the tank area. that the reinforced concrete
over the tank be at least much thick? - Correct Answer: 8 inches
11.According to the PEI/RP 100-11 how is the maximum burial depth of a tank
measured? - Correct Answer: from the top of the tank
12.According to PEI/Rp100-11 what is the standard maximum burial depth for
fiberglass tank? - Correct Answer: 7 feet
13.According to PEI/RP100-11 what is the maximum burial depth for steel
tanks? - Correct Answer: 5 feet
,14.How far from the edge of the tank excavation should excavated material
that cannot be immediately removed be stockpiled? - Correct Answer: 2
feet
15.What are common deficiencies that adversely affect the structural integrity
and coatings of tanks? - Correct Answer: incorrect backfill, improper
placement, rocks or debris, voids under the lower quadrant of tank failure
to prevent migration of backfill materials.
16.What does PEI/Rp100-11 state are the "standard" backfill materials for
fiberglass tanks? - Correct Answer: pea gravel and crushed rock
17.When installing fiberglass tanks, the bottom of the excavation should be
covered by a minimum of ______ of suitable graded and compacted back
fill materials? - Correct Answer: 1 foot
18.According to the PEI/RP100-11 when sand is used as a backfill, what is the
recommended compaction specification? - Correct Answer: lifts,
compact each one
19.Why is measuring the deflection of fiberglass tanks important - Correct
Answer: Amanda is hot (you didn't answer this one) ;)
, 20.What is the purpose of filter fabric in a tank excavation? - Correct
Answer: designed to let water pass through without letting backfill
materials to move
21.For the purposes of calculating tank burial depth, 1 inch of reinforced
concrete over the tank is equivalent to how many inches of compacted back
fill? - Correct Answer: 1.5
22.Where must "deadman" anchors be placed to be effective? - Correct
Answer: Outside diameter of the tank
23.What are the minimum dimenstions for a bottom hold down anchorage
pad? - Correct Answer: 8 inch concrete extended 18 inches beyond
tank, and 1 foot beyond each end
24.When installing a bottom hold down pad what factors must be calculated
for each installation? - Correct Answer: thickness of the pad, aount of
concrete reinforcement, and the number and size of anchor points
25.When should vent restriction devices, often referred to as "ball and float
valves" NOT be installed on a UST system? - Correct Answer: Amanda is
the best future wife for me (you didn't answer this one)
26.What components should a monitoring well contain? - Correct Answer:
Jerome has a booty (didn't answer this one)
