Dominion-Blvd-Corridor-Study-Approved - page 116-117

DOMINION BOULEVARD CORRIDOR STUDY | Chesapeake, Virginia
110 | Infrastructure Strategy
Infrastructure Strategy | 111
EXISTING CONDITIONS
Sewer System
Based on City GIS information, the existing gravity sewer through the Dominion Corridor
is relatively new, with the majority of the pipe and manholes having been installed in
the 1990’s and 2000’s. Sizes range from 8” – 18” and are comprised of several different
materials including ductile iron, polyvinyl chloride (PVC), and truss pipe. Service is primarily
confned to the northern most section of the Corridor and the northwest side of Dominion
Boulevard. Gravity sewer extends as far south as Drumcastle Lane and Scenic Parkway. The
remainder of the Corridor is served by private septic systems, including the Airport.
LF of pipe = approximately 65,000
# of manholes = 324
The existing gravity sewer system is served by fve (5) pump stations; Pump Station #’s 235,
238, 248, 260, and 261. The capacity of the existing pump stations range from an operating
volume of 398 gallons at Pump Station 238 to an operating volume of 2,104 gallons at
Pump Station 261.
Existing Pump Station Capacity
Pump Station Number Maximum Flow, Qavg, GPD
235
116,500
238
218,800
248
184,300
260
475,200
261
501,900
The existing force mains serving the pump stations range in size from 6” – 12” and are
comprised of ductile iron or PVC pipe. The force mains serving each pump station connect
directly to an existing Hampton Roads Sanitation District (HRSD) Interceptor Force Main.
HRSD’s existing force main runs through the northern section of the Corridor along Cedar
Road. This existing HRSD force main is comprised of 18” and 24” pipe and conveys flows to
the Nansemond and Atlantic Treatment Plants.
The majority of the area surrounding the existing pump stations is already developed.
The existing pump stations have some capacity to support the large amount of economic
expansion planned in this study. Additional pump stations and the infrastructure to convey
flows may be required to accommodate future growth.
Utilities Master Plan
248
261
235
238
260
CEDAR
AIRPORT
MOSES
GRANDY
DOMINION
WEST
HIGHWAY17
SHILLELAGH
NUMBERTEN
DOMINION
HERRINGDITCH
³
City of Chesapeake - Dominion Corridor
Existing Sanitary Sewer Conditions
Legend
"
)
CityPump Station
HRSDServiceAreaBoundary
PumpStationServiceArea Boundary
DominionCorridorStudyArea
Water
0
0.5
1
1.5
2
0.25
Miles
248
261
235
238
260
CEDAR
AIRPORT
MOSES
GRANDY
DOMINION
WEST
HIGHWAY 17
SHILLELAGH
NUMBER TEN
DOMINION
HERRING DITCH
³
City of Chesapeake - Dominion Corridor
Existing Sanitary Sewer Conditions
Legend
"
)
CityPump Station
HRSDServiceAreaBoundary
PumpStationServiceArea Boundary
DominionCorridorStudyArea
Water
0
0.5
1
1.5
2
0.25
Miles
Figure 76. The service areas in relation to Dominion
Boulevard.
Table 15: Existing pump station capacity
Figure 77. Existing sewer and water
HRSD/water connection
Proposed HRSD line
Existing HRSD line
Existing water line
Proposed water line
Study area
248
261
235
238
260
CEDAR
DOMINION
WEST
DOMINION
SHILLELAGH
NUMBERTEN
DOMINION
DOMINION
³
City of Chesapeake - Dominion Corridor
Existing Sanitary Sewer Conditions
Legend
"
)
CityPump Station
Water Lines
GravitySewer -City
ForceMain -City
HRSD ForceMain
HRSDServiceAreaBoundary
PumpStationServiceArea Boundary
DominionCorridorStudyArea
Water
0
0.25
0.5
0.75
1
0.125
Miles
248
261
235
238
260
CEDAR
DOMINION
WEST
DOMINION
SHILLELAGH
NUMBER TEN
DOMINION
DOMINION
³
City of Chesapeake - Dominion Corridor
Existing Sanitary Sewer Conditions
Legend
"
)
CityPump Station
Water Lines
GravitySewer -City
ForceMain -City
HRSD ForceMain
HRSD ServiceAreaBoundary
PumpStationServiceArea Boundary
DominionCorridorStudyArea
Water
0
0.25
0.5
0.75
1
0.125
Miles
Figure 75. Regional view of existing and proposed sewer
system and main connections for the study area
1...,96-97,98-99,100-101,102-103,104-105,106-107,108-109,110-111,112-113,114-115 118-119,120-121,122-123,124-125,126-127,128-129,130-131,132-133,134-135,136-137,...336
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