DOMINION BOULEVARD CORRIDOR STUDY | Chesapeake, Virginia
116 | Infrastructure Strategy
Infrastructure Strategy | 117
IMPLEMENTATION OF UTILITY INFRASTRUCTURE
Overall Corridor Concept
Installation of the proposed utility infrastructure within the Dominion Corridor will
generally progress as development progresses. However, installation of key infrastructure
components will be required in the early stages of Corridor development. The proposed
HRSD Interceptor Force Main and water transmission main will serve as the backbone
for the future development outlined in the Program Allocations. These lines should be
installed during construction of the new proposed roadways. It is recommended that
sufficient space be allotted within the right-of-way for the built-out water and sewer
infrastructure capacity needs. Model analysis of the proposed HRSD Interceptor Force
Main and water transmission main may dictate that a smaller pipe be installed initially
while development progresses.
Funding Strategies
In years past, the traditional strategy for implementation of utility infrastructure in support
of economic growth and development throughout the City results in the burden of the
cost and installation of the infrastructure being that of the developer. This infrastructure
is typically installed as development expands and sizing is coordinated with the City.
Sewer and water infrastructure within the right-of-way would then be publicly owned and
maintained.
In support of future development throughout the Dominion Corridor, the City will install the
major transmission water main and HRSD will install their proposed Interceptor Force Main.
These lines will serve as the backbone for future development growth. Implementation
of the remaining utility infrastructure can be funded in a number of ways. The traditional
method of the developer installing all required utility infrastructure is still the current
policy. However, in order to generate interest amongst private investors, a new strategy
for the Corridor may need to be adopted. This will be an ever-changing strategy that will
adapt to bring investors to the Corridor. Strategies would include identifying cost sharing
opportunities between the City and the developer. One area of cost sharing could be
accomplished on the intermediate infrastructure located between developments and
the major transmission/interceptor lines. Another area of cost sharing could be on the
upsizing of pipe. Here, the City would size the new infrastructure to not only meet the
demands of the proposed development, but also future growth that would be supported
by this infrastructure. In these scenarios, the full burden of cost would not fall solely on
the Developers in hopes that this will generate interest throughout the Corridor. Another
option would involve the City installing infrastructure in advance of development. Funds
could then be recouped through Pro Rata payments from the developers. This option may
prove most appealing in the developers eyes due to the fact that their up front utility costs
may be signifcantly minimized to just their site and connection fees.
Traditionally, it has been uncommon for the City to install utility infrastructure at its
own expense in support of development activities. Implementing these new strategies
will require acceptance from City Council as well as a philosophical change in the way
development has been handled in the past. Strategies will need to be flexible to adapt to
the economic landscape and demand as development progresses through the years.
PROJECTED UTILITY SYSTEM COSTS
Sewer
In order to estimate what new sewer infrastructure would be required to serve Areas 3-6,
location and size of existing sewer infrastructure was reviewed. The majority of the area
surrounding the existing pump stations is partially developed. The existing pump stations
have a signifcant amount of capacity to support the large amount of economic expansion
planned in this study. Area 4 is already served with sewer by pump stations 235 & 248.
Areas 3 and 5 are partly served with existing pump stations 260 and 261. Additional pump
stations and the infrastructure to convey flows will be required to accommodate future
growth.
For estimating pipe lengths, diameters and number of connections within the residential
acreage, an existing adjacent subdivision was analyzed. Pipe length and size data was
collected from the City-provided GIS database and was equated to the acreage of the
existing subdivision. Pipe lengths outside of residential allotments and surrounding non-
residential areas were estimated based on the proposed roadway layout shown on the
Master Land Use Plan. The length of pipe within Retail, Office and Industrial areas was
not estimated due to the site- and process-specifc needs of individual properties. At this
stage of Corridor planning, exact pipe sizes along individual streets and parcels cannot be
determined. An average cost per linear foot of pipe was assumed.
Costs for sanitary pipe were taken from recent project bid tabulations and were
approximated to include lateral connections, manholes, and typical construction activities.
Pipe 10” and smaller is assumed to be PVC. Pipe 12” and larger is assumed to be ductile
iron. Approximate costs for pump stations were taken from recent project bid tabulations
within the Hampton Roads area.
Water
In order to estimate what new water infrastructure would be required to serve Areas 3-6,
location and size of existing water infrastructure was reviewed. The majority of Area 4
has already been developed and the existing water transmission lines already exist. Area
5 has an existing 16” ductile iron transmission main that extends down Scenic Parkway to
Drumcastle Lane. This transmission main can be extended to the proposed transmission
main that extends through the Corridor. The majority of Areas 3 and 6 do not have existing
water infrastructure and will require new transmission mains.
For cost estimating purposes, pipe sizes for the transmission mains within the various
Areas were estimated based on conveying the fre flow at the maximum allowable velocity
outlined in the Chesapeake Public Facilities Manual (PFM). Pipe lengths for transmission
mains were estimated based on approximate connection points to the existing water
infrastructure and proposed transmission main. Pipe lengths for distribution mains were
estimated based on the proposed roadway layout shown on the Master Land Use Plan. At
this stage of Corridor planning, exact pipe sizes along individual streets and parcels cannot
be determined. An average cost per linear foot of pipe was assumed.
For estimating pipe lengths, diameters and number of connections within the residential
area allotment, an existing adjacent subdivision was analyzed. Pipe length and size data
was collected from the City-provided GIS database and was equated to the acreage of the
existing subdivision. The length of pipe within Retail, Office and Industrial areas was not
estimated due to the site- and process-specifc needs of individual properties.
