Boarding Schools 100 gpd wastewater per student, WHY? Code Uniform Plumbing Code Table H201.1(4) 1

[darthsoilsguy2]

Hello, I'm looking to clean up some old permits of a Gymnasium and an Auditorium at a boarding school. The school has a centralized wastewater disposal system just for themselves. The state's rules on wastewater demands mirrors the values of the Uniform Plumbing Code Table H201.1(4) and the value shown for boarding schools is 100 gallons-per-day/person. This same school had built both a Gymnasium and an Auditorium about 20 years ago. Here's the issue, when past designers permitted those 2 buildings with the state.... they counted seats in the buildings and came up with new wastewater demands of the facilities. BUT the campus wastewater permits recognize both the 100 GPD/person totals in ADDITION to the totals from these facilities. I think this is double-dipping. I think the 100 GPD/person number for Boarding School populations already includes a gymnasium located somewhere on campus... likewise I think the 100 GPD/person for Boarding Schools already includes an auditorium somewhere on campus. I don't have anything against permitting buildings by USE or permitting by POPULATION, but we should avoid permitting by BOTH at the same time. So.... Here's my question Does anybody know where these estimated sewage flow rates design values came from? I'm looking to understand where the 100 GPD/person number came from in the first place, preferably citable references. With the exception of nursing homes and hospitals, the boarding school 100 GPD/person is a much higher demand number than almost any other population-based wastewater demand out there, so no need to over-inflate it.

 

[bimr]

I presently don't have a copy of it, but you might try the " TR-16 Guides for the Design of Wastewater Treatment Work, 2016, New England Interstate Water Pollution Control Commission".

Illinois uses similar 100 gpd/person numbers:

Title 35

Are the Gymnasium and Auditorium only servicing the boarding school or are they capable of serving large numbers of people from off-campus? If the facilities are only serving the campus, then the 100 gpd/person would include the facilities.

Note that many of these rules of thumb for flow are antiquated and the actual real world flow volumes are less. Another way of approaching this is to do a flow study to determine the actual volumes.