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Wet Well - Inlet Invert Guidance

Wet Well - Inlet Invert Guidance

Wet Well - Inlet Invert Guidance

(OP)
I am looking for a reference to a waste water manual or code in Pennsyvania that provides guidance on the location of an inlet invert elevation with respect to the high water elevation.  There was an incidence where a contractor installed an inlet invert below the high water level.  I know this is wrong, but am unaware of a document that provides guidance.  I looked at DEP Domestic Wasewater Facilities Manual and it addresses wet wells, but not this particular issue.

RE: Wet Well - Inlet Invert Guidance

I'm at home, but if the "high" water level is a design set-point that starts a pump, then as soon as the sewage reaches the gravity sewer becomes surcharged the sewer is to longer freely flowing and the 2-FPS design criteria is violated.

Steve
 

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