TCEQ Wastewater (Class D) License
Prep questions and answers 2026\2027 A+
Grade
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
Prep questions and answers 2026\2027 A+
Grade
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
