Let's design a Grit Chamber by hand for only the $2023$ year. You'll need to design at

least two grit chambers, and per TCEQ guidelines each unit will need to be capable of

operation at the permitted two hour peak flow rate $($over the lifetime of the plant$).$

You can of course design for more than two grit chambers as necessary to meet TCEQ

guidelines and allow for maintenance. You are free to select the type of grit chamber.

Specific details you'll want to identify for your design are detention times $($if

appropriate$),$ approach velocity $($if appropriate$),$ grit chamber size, air supply rate $($if

applicable$),$ and grit mass. How many truck loads of grit are produced? What

happens to this grit?