INSTALLER'S TEST (2026/2027)
UPDATE|EXAM
QUESTIONS WITH MULTIPLE
CHOICES |VERIFIED & REVISED
ANSWERS (NEW)!!!
Themgravelminmthemdisposalmfieldmtrenchesmshallmnotmbemcoveredmwithmwhichmofmthemfollowing?
a)muntreatedmbuildingmpaper
b)m6-milmblackmplastic
c)m2minchmlayermofmstraw
d)mOthermmaterialmdeterminedmequivalentmbymthemCommissionerm-mCORRECTmANSWERb)m6-
milmblackmplastic
Themsoilmareamrequiredmformtheminstallationmofmamconventionalmsubstitutemsystemmis?
a)m30%mlessmthanmformamconventionalmsystem
b)mamlargermsoilmfootprintmthanmamconventionalmsystem
c)mthemsamemsoilmfootprintmasmamconventionalmsystemm-
mCORRECTmANSWERc)mThemsamemsoilmfootprintmasmamconventionalmsystem
Ifmthempermitmspecifiesmthatmthemsystemmismtombeminstalledm24minchesmdeep,mthismmeans?
a)m24minchesmfrommthemsurfacemofmthemgroundmtomthemtopmofmthemgravel
b)m24minchmfrommthemtopmofmthemgroundmtomthembottommofmthemtrenchmandmlinesminstalledmonmco
ntour
c)mtrenchmdepthmmaymvarymbetweenm24mtom30minchesm-
mCORRECTmANSWERb)m24minchesmfrommthemtopmofmthemgroundmtomthembottommofmthemtrenchmand
mlinesminstalledmonmcontour
, Inmsoilsmthatmaremapprovedmbympercolationmtestsmormevaluatedmtomhavemabsorptionmratesmhighermt
hanm60mMPImLDGPmsystemsmrequire?
a)minstallationminmam24minchmtrenchmwithmgravelmbackmfillmleveledmtomthemtopmofmthemLDGP
b)minstallationminmam24minchmtrenchmwithmamqualitymtopmsoilmbackfill
c)minstallationminmanm18minchmtrenchmwithmgravelmbackfillmtomthemtopmofmthemLDGP
d)minstallationminmam24minchmtrenchmwithmgravelmbackfillmtom2minchesmabovemLDGPm-
mCORRECTmANSWERa)minstallationminmam24minchmtrenchmwithmgravelmbackmfillmleveledmtomthemtopm
ofmthemLDGP
Themmaximummtrenchmwidthmallowedmformam24minchmwidemchambermproductmis
a)m24minches
b)m30minches
c)m34minches
d)m36minchesm-mCORRECTmANSWERb)m30minches
Whatmismthempropermvolumemofmamdosingm(pump)mchamber?
a)msamemasmthemsepticmtank
b)m1000mgallons
c)mtwomtimesmthemdailymwastemwatermflow
d)m900mgallonsm-mCORRECTmANSWERc)mtwomtimesmthemdailymwastemwatermflow
Whenminstallingmconventionalmandmconventionalmsubstitutemsystems
a)mdisposalmfieldmtrenchesmshallmfollowmthemcontourmofmthemgroundmsurface
b)mamminimummofm6mftmofmundisturbedmearthmshallmbemrequiredmbetweenmtrenches
c)mtrenchesmshallmnotmbemexcavatedmwhenmthemsoilmismwetmenoughmtomsmearmormcompactm
d)mallmofmthemabovem-mCORRECTmANSWERd)mallmthemabove
UPDATE|EXAM
QUESTIONS WITH MULTIPLE
CHOICES |VERIFIED & REVISED
ANSWERS (NEW)!!!
Themgravelminmthemdisposalmfieldmtrenchesmshallmnotmbemcoveredmwithmwhichmofmthemfollowing?
a)muntreatedmbuildingmpaper
b)m6-milmblackmplastic
c)m2minchmlayermofmstraw
d)mOthermmaterialmdeterminedmequivalentmbymthemCommissionerm-mCORRECTmANSWERb)m6-
milmblackmplastic
Themsoilmareamrequiredmformtheminstallationmofmamconventionalmsubstitutemsystemmis?
a)m30%mlessmthanmformamconventionalmsystem
b)mamlargermsoilmfootprintmthanmamconventionalmsystem
c)mthemsamemsoilmfootprintmasmamconventionalmsystemm-
mCORRECTmANSWERc)mThemsamemsoilmfootprintmasmamconventionalmsystem
Ifmthempermitmspecifiesmthatmthemsystemmismtombeminstalledm24minchesmdeep,mthismmeans?
a)m24minchesmfrommthemsurfacemofmthemgroundmtomthemtopmofmthemgravel
b)m24minchmfrommthemtopmofmthemgroundmtomthembottommofmthemtrenchmandmlinesminstalledmonmco
ntour
c)mtrenchmdepthmmaymvarymbetweenm24mtom30minchesm-
mCORRECTmANSWERb)m24minchesmfrommthemtopmofmthemgroundmtomthembottommofmthemtrenchmand
mlinesminstalledmonmcontour
, Inmsoilsmthatmaremapprovedmbympercolationmtestsmormevaluatedmtomhavemabsorptionmratesmhighermt
hanm60mMPImLDGPmsystemsmrequire?
a)minstallationminmam24minchmtrenchmwithmgravelmbackmfillmleveledmtomthemtopmofmthemLDGP
b)minstallationminmam24minchmtrenchmwithmamqualitymtopmsoilmbackfill
c)minstallationminmanm18minchmtrenchmwithmgravelmbackfillmtomthemtopmofmthemLDGP
d)minstallationminmam24minchmtrenchmwithmgravelmbackfillmtom2minchesmabovemLDGPm-
mCORRECTmANSWERa)minstallationminmam24minchmtrenchmwithmgravelmbackmfillmleveledmtomthemtopm
ofmthemLDGP
Themmaximummtrenchmwidthmallowedmformam24minchmwidemchambermproductmis
a)m24minches
b)m30minches
c)m34minches
d)m36minchesm-mCORRECTmANSWERb)m30minches
Whatmismthempropermvolumemofmamdosingm(pump)mchamber?
a)msamemasmthemsepticmtank
b)m1000mgallons
c)mtwomtimesmthemdailymwastemwatermflow
d)m900mgallonsm-mCORRECTmANSWERc)mtwomtimesmthemdailymwastemwatermflow
Whenminstallingmconventionalmandmconventionalmsubstitutemsystems
a)mdisposalmfieldmtrenchesmshallmfollowmthemcontourmofmthemgroundmsurface
b)mamminimummofm6mftmofmundisturbedmearthmshallmbemrequiredmbetweenmtrenches
c)mtrenchesmshallmnotmbemexcavatedmwhenmthemsoilmismwetmenoughmtomsmearmormcompactm
d)mallmofmthemabovem-mCORRECTmANSWERd)mallmthemabove