TCEQ WASTEWATER (CLASS D)
LICENSE PREP QUESTIONS & 100%
CORRECT ANSWERS
Minimum velocity required to keep solids in suspension? - correct answer ✔✔2ft/sec
Minimum required velocity a inverted siphon requires? - correct answer ✔✔3ft/sec
Two most common pipe materials used in the collection system? - correct answer ✔✔Clay &
PVC
OSHA minimum standards for shoring, sloping, or trench boxes are? - correct answer ✔✔5ft or
deeper
If the trench is _____ or deeper, use a portable ladder or other means of exit. - correct answer
✔✔4ft or deeper
The ladder most extend ____ feet above the trench and be secured. - correct answer ✔✔3ft
Ladders must be within ____ feet of trench workers and not more than ____ feet apart. -
correct answer ✔✔25ft, 50ft
The excavation spoil must be at least? - correct answer ✔✔2ft from the edge of the trench
Which type of pump is most often used in a lift station? - correct answer ✔✔Centrifugal Pump
LICENSE PREP QUESTIONS & 100%
CORRECT ANSWERS
Minimum velocity required to keep solids in suspension? - correct answer ✔✔2ft/sec
Minimum required velocity a inverted siphon requires? - correct answer ✔✔3ft/sec
Two most common pipe materials used in the collection system? - correct answer ✔✔Clay &
PVC
OSHA minimum standards for shoring, sloping, or trench boxes are? - correct answer ✔✔5ft or
deeper
If the trench is _____ or deeper, use a portable ladder or other means of exit. - correct answer
✔✔4ft or deeper
The ladder most extend ____ feet above the trench and be secured. - correct answer ✔✔3ft
Ladders must be within ____ feet of trench workers and not more than ____ feet apart. -
correct answer ✔✔25ft, 50ft
The excavation spoil must be at least? - correct answer ✔✔2ft from the edge of the trench
Which type of pump is most often used in a lift station? - correct answer ✔✔Centrifugal Pump
