 
          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