TCEQ WASTEWATER (CLASS D)
LICENSE PREP EXAM WITH
QUESTIONS AND 100% CORRECT
ANSWERS VERIFIED BY EXPERT (2025
UPDATE)
Q1: What is the minimum velocity required to keep solids in suspension?
A1: 2 ft/sec
Q2: What is the minimum required velocity for an inverted siphon?
A2: 3 ft/sec
Q3: What are the two most common pipe materials used in the collection system?
A3: Clay & PVC
Q4: What are the OSHA minimum standards for shoring, sloping, or trench boxes?
A4: 5 ft or deeper
Q5: If the trench is _____ or deeper, what should be used for exit?
A5: 4 ft or deeper; a portable ladder or other means of exit.
Q6: How far must the ladder extend above the trench and how should it be secured?
A6: 3 ft and must be secured.
LICENSE PREP EXAM WITH
QUESTIONS AND 100% CORRECT
ANSWERS VERIFIED BY EXPERT (2025
UPDATE)
Q1: What is the minimum velocity required to keep solids in suspension?
A1: 2 ft/sec
Q2: What is the minimum required velocity for an inverted siphon?
A2: 3 ft/sec
Q3: What are the two most common pipe materials used in the collection system?
A3: Clay & PVC
Q4: What are the OSHA minimum standards for shoring, sloping, or trench boxes?
A4: 5 ft or deeper
Q5: If the trench is _____ or deeper, what should be used for exit?
A5: 4 ft or deeper; a portable ladder or other means of exit.
Q6: How far must the ladder extend above the trench and how should it be secured?
A6: 3 ft and must be secured.
