Engineering Design Manual - Loudoun Water

Chapter 9: Sewage Pumping Stations
Chapter 9: Sewage Pumping Stations
9.1 Scope
A. Intent
These sewage pumping station (SPS) design standards are intended to assist design engineers
in the development of plans and specifications for Loudoun Water projects. The materials,
configurations, and features described here represent the minimum acceptable level of
quality expected in pumping station design and reflect the goal of standardizing Loudoun
Water equipment. These standards should not be construed as being a complete description
of the necessary features for a particular pumping station design. Deviations from these
standards must be approved by Loudoun Water during the Basis of Design phase of the
project. Loudoun Water has the final authority regarding the acceptability of any particular
pumping station design.
B. Limitations
The sewage pumping station standards presented herein shall supplement the latest edition
of the Sewage Collection and Treatment (SCAT) Regulations 9 VAC 25-790, as published by
the Commonwealth of Virginia, Virginia Department of Environmental Quality (DEQ). The
SCAT Regulations represent the minimum design requirements set forth by the DEQ. All
aspects of the SCAT Regulations shall be adhered to. As the owner, Loudoun Water may
identify and determine the need for standards and requirements that are more stringent than
those contained in Part III of the SCAT Regulations.
Loudoun Water reserves the right to amend or modify this publication without notice, and to
interpret the meaning of all statements made herein.
9.2 Reference Standards
The design engineer will comply with all relevant industry standards and federal, state and
local regulations, including the following standards, which are incorporated into this
document by reference:
Virginia Sewage Collection and Treatment Regulations
Virginia Building Code
Virginia Water Control Board; Dulles Area Watershed Policy
Virginia Water Control Board; Occoquan Policy
VDOT (Virginia Department of Transportation); Road and Bridge Specifications
Loudoun Water’s Approved Materials List
Engineering Design Manual
September 2010 127