100% CORRECT WELL DETAILED
ANSWERS|LATEST
UPDATE!!!2025/2026|GUARANTEED
When the native soils are A-1 or coarser, the filter sand shall envelop the drain rock
such that at least 3 feet of filter sand is between it and the native soils. -
ANSWER✅✅True
Acceptable Operation and Maintenance Entities for extended treatment package
systems include all of the following except ___. - ANSWER✅✅Two or more
homeowners
An individual or subsurface disposal system or component that has not been
previously used in Idaho or otherwise requires field review prior to approval as an
alternative system, is called ___. - ANSWER✅✅Experimental System
The minimum residual head used for calculating flow and pump sizes on pressure
distribution systems is ___. - ANSWER✅✅2.5 feet
Drainfields that are failing due to ___ are NOT candidates for drainfield remediation
components. - ANSWER✅✅A single-family dwelling with gravity drainfields and
system inspection is recommended to verify that the drainfield is not malfunctioning
due to excessive hydraulic loading (e.g., leaking toilets, faucets, or high-occupancy
rates), or soil structural changes due to use of an ion exchange water softener.
When installing a sand mound, the maximum slope of natural ground is ___% for A
soils, and ___% for C-2 soils. - ANSWER✅✅
1
, For sand mounds, the mound should be ___. - ANSWER✅✅As long and narrow
as practical
The minimum separation distance from a septic tank to temporary surface water is
___, and the minimum separation distance from a septic tank to intermittent surface
water is ___. - ANSWER✅✅25 feet/ 50 feet
If drainfield remediation components are used on a failed system and there is
sewage on the ground, how many days does the remediation system have to
mitigate the public health threat? - ANSWER✅✅The DRC is expected to abate the
public health threat of sewage on the ground and all other indications of biomat
failure within 30 days of installation.
Failure to comply with the rules is grounds for revocation of the installers registration
permit. - ANSWER✅✅Grounds for Revocation. Failure to comply with these rules
shall be grounds for revocation of the permit or the certification, or both.
Drip laterals in a non-continuous flush drip distribution system should be flushed ___.
- ANSWER✅✅Drip distribution zones should be flushed every 2 weeks.
Large soil absorption systems that receive more than 5,000 gallons per day must be
greater than ___ from building foundations and ___ for property lines regardless of
soil type. - ANSWER✅✅75 feet / 75 feet
The minimum depth of natural soil required between the bottom of a sand mound
with 12 inches of filter sand below the aggregate and groundwater is 2 feet for ___. -
ANSWER✅✅C soils
Which of the following are not drip distribution system design criteria? -
ANSWER✅✅Time dosing is optional as is the frequency of back flushing the filter
2
ANSWERS|LATEST
UPDATE!!!2025/2026|GUARANTEED
When the native soils are A-1 or coarser, the filter sand shall envelop the drain rock
such that at least 3 feet of filter sand is between it and the native soils. -
ANSWER✅✅True
Acceptable Operation and Maintenance Entities for extended treatment package
systems include all of the following except ___. - ANSWER✅✅Two or more
homeowners
An individual or subsurface disposal system or component that has not been
previously used in Idaho or otherwise requires field review prior to approval as an
alternative system, is called ___. - ANSWER✅✅Experimental System
The minimum residual head used for calculating flow and pump sizes on pressure
distribution systems is ___. - ANSWER✅✅2.5 feet
Drainfields that are failing due to ___ are NOT candidates for drainfield remediation
components. - ANSWER✅✅A single-family dwelling with gravity drainfields and
system inspection is recommended to verify that the drainfield is not malfunctioning
due to excessive hydraulic loading (e.g., leaking toilets, faucets, or high-occupancy
rates), or soil structural changes due to use of an ion exchange water softener.
When installing a sand mound, the maximum slope of natural ground is ___% for A
soils, and ___% for C-2 soils. - ANSWER✅✅
1
, For sand mounds, the mound should be ___. - ANSWER✅✅As long and narrow
as practical
The minimum separation distance from a septic tank to temporary surface water is
___, and the minimum separation distance from a septic tank to intermittent surface
water is ___. - ANSWER✅✅25 feet/ 50 feet
If drainfield remediation components are used on a failed system and there is
sewage on the ground, how many days does the remediation system have to
mitigate the public health threat? - ANSWER✅✅The DRC is expected to abate the
public health threat of sewage on the ground and all other indications of biomat
failure within 30 days of installation.
Failure to comply with the rules is grounds for revocation of the installers registration
permit. - ANSWER✅✅Grounds for Revocation. Failure to comply with these rules
shall be grounds for revocation of the permit or the certification, or both.
Drip laterals in a non-continuous flush drip distribution system should be flushed ___.
- ANSWER✅✅Drip distribution zones should be flushed every 2 weeks.
Large soil absorption systems that receive more than 5,000 gallons per day must be
greater than ___ from building foundations and ___ for property lines regardless of
soil type. - ANSWER✅✅75 feet / 75 feet
The minimum depth of natural soil required between the bottom of a sand mound
with 12 inches of filter sand below the aggregate and groundwater is 2 feet for ___. -
ANSWER✅✅C soils
Which of the following are not drip distribution system design criteria? -
ANSWER✅✅Time dosing is optional as is the frequency of back flushing the filter
2
