MIL-HDBK-1005/16
3.3.2
Flow Estimating Methodology.
A general approach to
estimating flow is as follows:
a) Determine average unit flows from analyses of
wastewater discharged from the facilities being studied. The
average unit flow is the average wastewater flow rate per unit of
wastewater source. For example, for residential flows, determine
the average flow per capita. For industrial flows, determine the
average flow per unit of activity (for example, average flow per
vehicle washed for a vehicle wash facility). To estimate future
peak and minimum flows, use existing peak to average and
minimum to average flow ratios to calculate these flows.
Where measurements cannot be obtained, use data given in WEF MOPs
FD-4, FD-5, and this section for individual flow components.
b) Apply average unit flows to design population,
production, or other applicable parameter of installation size.
c) Calculate minimum and peak flows for each
wastewater source by applying the appropriate flow ratios to the
calculated average flows. Add maximum coincident flows from
different sources to determine total peak flow. Consider peak
discharges from pumping stations to be coincident with peak flows
in the receiving system unless a program of pumping is used to
ensure that peaks do not coincide. For example, a pump station
equipped with flow-paced variable speed pumps can minimize the
peak flows conveyed to the downstream receiving system. In this
situation, the average flows from the system area upstream of the
pump station may be combined with downstream areas and the peak
calculated from the combined average flow of the two areas.
d) Estimate average wastewater flows, and peak and
minimum flows for minimum, normal, and maximum deployment
conditions.
3.3.2.1
Design Populations. If wastewaters are not existing
and domestic wastewater flows need to be projected, estimate both
resident and nonresident design populations. Complete these
estimates both for initial design conditions and for projected
populations to be served by the wastewater facilities, based on
planned expansions or staff increases at the military
installation.
Determine the design resident population estimate by
adding the existing and proposed resident military populations
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