TCEQ Wastewater (Class D) License Prep
Minimum velocity required to keep solids in suspension? - ANS-2ft/sec
Minimum required velocity a inverted siphon requires? - ANS-3ft/sec
Two most common pipe materials used in the collection system? - ANS-Clay & PVC
OSHA minimum standards for shoring, sloping, or trench boxes are? - ANS-5ft or
deeper
If the trench is _____ or deeper, use a portable ladder or other means of exit. - ANS-4ft
or deeper
The ladder most extend ____ feet above the trench and be secured. - ANS-3ft
Ladders must be within ____ feet of trench workers and not more than ____ feet apart. -
ANS-25ft, 50ft
The excavation spoil must be at least? - ANS-2ft from the edge of the trench
Which type of pump is most often used in a lift station? - ANS-Centrifugal Pump
What is CMOM? - ANS-Capacity, management, operations, and maintenance
Install water lines no closer to a water line than ____ feet - ANS-9ft
Chlorine helps ______ grease, making it easy to skim - ANS-Congeal
The magnetic meter works by the law of ________ - ANS-Induction
How often do you calibrate flow measuring devices? - ANS-Annually
Primary clarifiers should remove _____ percent of the incoming BOD - ANS-35%
Primary sludge is about ________% water and _______% solids - ANS-94-96% water,
and 4-6% solids
Minimum velocity required to keep solids in suspension? - ANS-2ft/sec
Minimum required velocity a inverted siphon requires? - ANS-3ft/sec
Two most common pipe materials used in the collection system? - ANS-Clay & PVC
OSHA minimum standards for shoring, sloping, or trench boxes are? - ANS-5ft or
deeper
If the trench is _____ or deeper, use a portable ladder or other means of exit. - ANS-4ft
or deeper
The ladder most extend ____ feet above the trench and be secured. - ANS-3ft
Ladders must be within ____ feet of trench workers and not more than ____ feet apart. -
ANS-25ft, 50ft
The excavation spoil must be at least? - ANS-2ft from the edge of the trench
Which type of pump is most often used in a lift station? - ANS-Centrifugal Pump
What is CMOM? - ANS-Capacity, management, operations, and maintenance
Install water lines no closer to a water line than ____ feet - ANS-9ft
Chlorine helps ______ grease, making it easy to skim - ANS-Congeal
The magnetic meter works by the law of ________ - ANS-Induction
How often do you calibrate flow measuring devices? - ANS-Annually
Primary clarifiers should remove _____ percent of the incoming BOD - ANS-35%
Primary sludge is about ________% water and _______% solids - ANS-94-96% water,
and 4-6% solids
