DETAILED ANSWERS WITH RATIONALES
(VERIFIED ANSWERS) ALREADY GRADED A+
2025 NEW UPDATE
1.6 gallon or less flush commodes are required on facilities that use holding tanks -
CORRECT ANSWER: true
access must be provided within 24 inches of surface grade to outlet end man hole of
septic tank - CORRECT ANSWER: false
alarms may either be visible or audible + shall not be placed in high traffic areas -
CORRECT ANSWER: false
all distribution boxes shall be installed level - CORRECT ANSWER: true
all electrical wiring for on site sewage disposal system shall comply with national
electrical code - CORRECT ANSWER: true
all finished grading shall be done to divert surface water towards lateral line -
CORRECT ANSWER: false
all holding tanks shall be sized to hold a minimum of 7 day storage capacity -
CORRECT ANSWER: false
all nonperforated pipe shall be bedded in grillage - CORRECT ANSWER: true
,all perforated pipe used for gravity flow systems shall meet the ASTM=F810 standards
for rigid piping + ASTM-F405 for corrugated semi-rigid piping. - CORRECT ANSWER:
true
all pretreatment units + distribution boxes are required to have KY approval numbers on
them - CORRECT ANSWER: true
back filling of system is permitted prior to final inspection providing inspections ports are
placed in lateral trenches - CORRECT ANSWER: false
back hoe pits may be required by inspector on site of evaluation - CORRECT ANSWER:
true
car washes, slaughter houses, factories, funeral parlors can produce waste that are not
allowed to be disposed in an on site sewage disposable system - CORRECT ANSWER:
true
certified installer must lay out a septic system prior to evacuation to assure that
adequate fall between components is possible - CORRECT ANSWER: true
certified installer must lay out on site sewage system to determine if adequate fall is
possible between components - CORRECT ANSWER: true
certified installer must submit proposed system drawing prior to obtaining instillation
permit - CORRECT ANSWER: true
certified installer not responsible for backfilling or finished grading over system if builder
does work - CORRECT ANSWER: false
certified installer or permit holder is required to remain on construction site while work is
being performed on system - CORRECT ANSWER: true
, certified installer shall complete an installers affidavit for every system or shall request
an initial inspection to be performed by certified inspector - CORRECT ANSWER: true
compacting fill soil 95% can be used in lieu of letting the fill settle for 1 year period -
CORRECT ANSWER: false
corrugated polyethylene pipe can be used between distribution box + lateral trenches -
CORRECT ANSWER: false
curtain drain bottoms shall be graded to provide positive drainage down slope to surface
or a catchment basin - CORRECT ANSWER: true
distribution boxes shall be installed level with all connections rendered watertight -
CORRECT ANSWER: true
dosing siphons may be used in lieu of dosing pumps where elevations allow for
adequate fall - CORRECT ANSWER: true
dosing tank man holes shall be brought within 12 inches of surface grade - CORRECT
ANSWER: false
dosing tanks are required to have separate electrical circuits for pump + alarm -
CORRECT ANSWER: true
drip irrigation is experimental onsite sewage disposable system option - CORRECT
ANSWER: false
drip irrigation system include
a. advance treatment