TCEQ Wastewater (Class D) License Prep Questions With Correct Answers!!

Minimum velocity required to keep solids in suspension? - Answer-2ft/sec Minimum required velocity a inverted siphon requires? - Answer-3ft/sec Two most common pipe materials used in the collection system? - Answer-Clay & PVC OSHA minimum standards for shoring, sloping, or trench boxes are? - Answer-5ft or deeper If the trench is _____ or deeper, use a portable ladder or other means of exit. - Answer-4ft or deeper The ladder most extend ____ feet above the trench and be secured. - Answer-3ft Ladders must be within ____ feet of trench workers and not more than ____ feet apart. - Answer- 25ft, 50ft The excavation spoil must be at least? - Answer-2ft from the edge of the trench Which type of pump is most often used in a lift station? - Answer-Centrifugal Pump What is CMOM? - Answer-Capacity, management, operations, and maintenance Install water lines no closer to a water line than ____ feet - Answer-9ft Chlorine helps ______ grease, making it easy to skim - Answer-Congeal The magnetic meter works by the law of ________ - Answer-Induction How often do you calibrate flow measuring devices? - Answer-AnnuallyPrimary clarifiers should remove _____ percent of the incoming BOD - Answer-35% Primary sludge is about ________% water and _______% solids - Answer-94-96% water, and 4-6% solids Primary clarifiers should remove ____ % of the BOD and _____% of the settleable solids - Answer- 35%, 90-95% Usual blanket depth in a secondary clarifier is no more than ____ of the sidewall depth - Answer-1/4