SEPTIC LICENSE UPADTED QUESTIONS AND ANSWERS
RATED A+
✔✔Where is the requirement for construction of sewage pumpout facilities specified -
✔✔Water quality certification for the for of engineers section 10 permit
✔✔Each marina will prominently display signs stating what - ✔✔It is illegal to discharge
untreated sanitary waste into US waters and direct boaters to the pumpout facilities
✔✔Pipe and joints in stream crossing will be tested where - ✔✔In place
✔✔What must stream crossing pipe and joints do to pass the test - ✔✔- zero infiltration
- protected from hydraulic m, longitudinal, vertical, horizontal loads, erosion, and impact
✔✔When can sewers be laid on piers across rivers ir streams - ✔✔When it can be
demonstrated that there are no other practical alternatives
✔✔How will sewers on piers be constructed compared to sewers entering or crossing
streams - ✔✔The same
✔✔Minimum cover of sewer in stabilized channels is - ✔✔5ft
✔✔Minimum cover of sewer in shifting channels is - ✔✔7ft
✔✔Inverted siphons shall have not less than ____ barrels - ✔✔Two
✔✔What is the minimum pipe size for inverted siphons - ✔✔6inches
✔✔Inverted siphons will be provided with necessary purtenances for - ✔✔Convenient
flushing and maintenance
✔✔Pipe sized in inverted siphons shall be selected to secure what velocities - ✔✔3 fps
average flow
✔✔What must be installed in inverted siphons to prevent plugging of siphons - ✔✔Rock
catcher and coarse screen
✔✔Inverted siphons inlet and outlet details shall be arranged so - ✔✔Normal flow is
diverted to one barrel and so that either barrel may be removed from service for
cleaning or other maintenance
✔✔3/16" orifice size should have a minimum Squirt height of - ✔✔2ft
✔✔1/8" orifice size should have a minimum squirt heigh of - ✔✔5ft
, ✔✔5/32" orifice size should have a minimum squirt height of - ✔✔5ft
✔✔What is the maximum flow difference for a nominal squirt height of 2ft - ✔✔
✔✔ How many days prior to the the desired inspection date should you make your
appointment - ✔✔2 working days
✔✔What must happen before covering all or any of the sewage disposal system -
✔✔Must be inspected and approved
✔✔What has to happen with roof and surface water - ✔✔Must be directed away or
downslope from sewage disposal system by footing or foundation floor drains or surface
diversion ditches
✔✔What must be done to all pipe joints including those in the drain field - ✔✔Glued and
watertight
✔✔How much fall should there be on all parts of the building sewer - ✔✔1/8 inch per
foot
✔✔Elbows or bends should be no greater than ____ - ✔✔45 degrees, 90 degree
sweeps may be used
✔✔What is the rating needed for solid pipe under driving,parking, or any vehicle
encroaching areas - ✔✔ASTM- 3034 crush rating, or enclosed in a pipe that does meet
it
✔✔Who is the doe - ✔✔Department of ecology
✔✔What department criteria do you follow for sewage that crosses over waterline -
✔✔Department of Ecology (DOE)
✔✔All On-site septic systems should be watertight except for the ______ - ✔✔Dispersal
component
✔✔Septic tanks should be _____. And on what kind of soil - ✔✔Level, and on
undisturbed soil, or by manufacture standards if other than concrete tank
✔✔If grade is dug to deep what should happen - ✔✔Sand should be added for proper
bedding back to correct grade
✔✔All connections at tank should be _________ - ✔✔Watertight
RATED A+
✔✔Where is the requirement for construction of sewage pumpout facilities specified -
✔✔Water quality certification for the for of engineers section 10 permit
✔✔Each marina will prominently display signs stating what - ✔✔It is illegal to discharge
untreated sanitary waste into US waters and direct boaters to the pumpout facilities
✔✔Pipe and joints in stream crossing will be tested where - ✔✔In place
✔✔What must stream crossing pipe and joints do to pass the test - ✔✔- zero infiltration
- protected from hydraulic m, longitudinal, vertical, horizontal loads, erosion, and impact
✔✔When can sewers be laid on piers across rivers ir streams - ✔✔When it can be
demonstrated that there are no other practical alternatives
✔✔How will sewers on piers be constructed compared to sewers entering or crossing
streams - ✔✔The same
✔✔Minimum cover of sewer in stabilized channels is - ✔✔5ft
✔✔Minimum cover of sewer in shifting channels is - ✔✔7ft
✔✔Inverted siphons shall have not less than ____ barrels - ✔✔Two
✔✔What is the minimum pipe size for inverted siphons - ✔✔6inches
✔✔Inverted siphons will be provided with necessary purtenances for - ✔✔Convenient
flushing and maintenance
✔✔Pipe sized in inverted siphons shall be selected to secure what velocities - ✔✔3 fps
average flow
✔✔What must be installed in inverted siphons to prevent plugging of siphons - ✔✔Rock
catcher and coarse screen
✔✔Inverted siphons inlet and outlet details shall be arranged so - ✔✔Normal flow is
diverted to one barrel and so that either barrel may be removed from service for
cleaning or other maintenance
✔✔3/16" orifice size should have a minimum Squirt height of - ✔✔2ft
✔✔1/8" orifice size should have a minimum squirt heigh of - ✔✔5ft
, ✔✔5/32" orifice size should have a minimum squirt height of - ✔✔5ft
✔✔What is the maximum flow difference for a nominal squirt height of 2ft - ✔✔
✔✔ How many days prior to the the desired inspection date should you make your
appointment - ✔✔2 working days
✔✔What must happen before covering all or any of the sewage disposal system -
✔✔Must be inspected and approved
✔✔What has to happen with roof and surface water - ✔✔Must be directed away or
downslope from sewage disposal system by footing or foundation floor drains or surface
diversion ditches
✔✔What must be done to all pipe joints including those in the drain field - ✔✔Glued and
watertight
✔✔How much fall should there be on all parts of the building sewer - ✔✔1/8 inch per
foot
✔✔Elbows or bends should be no greater than ____ - ✔✔45 degrees, 90 degree
sweeps may be used
✔✔What is the rating needed for solid pipe under driving,parking, or any vehicle
encroaching areas - ✔✔ASTM- 3034 crush rating, or enclosed in a pipe that does meet
it
✔✔Who is the doe - ✔✔Department of ecology
✔✔What department criteria do you follow for sewage that crosses over waterline -
✔✔Department of Ecology (DOE)
✔✔All On-site septic systems should be watertight except for the ______ - ✔✔Dispersal
component
✔✔Septic tanks should be _____. And on what kind of soil - ✔✔Level, and on
undisturbed soil, or by manufacture standards if other than concrete tank
✔✔If grade is dug to deep what should happen - ✔✔Sand should be added for proper
bedding back to correct grade
✔✔All connections at tank should be _________ - ✔✔Watertight
