West Lake 750,000-Gallon Composite Elevated Water Storage Tank

Key Accomplishments

Johnston Construction Company

• The tank was constructed to create a 520 pressure zone along the northern portion of the Route 17 corridor and provide service to Westlake, a 701-lot community being developed by Westlake Development, LLC.
• JCC’s scope included erosion and sediment controls, staking, initial site work, foundation work, slab-on-grade work, piping, valves, manholes, accessories, fittings, testing, sterilization, tank grounding, electrical conduit sleeves, and coordination with Caldwell Tanks.
• Major work included tank foundation support, concrete floor / slab-on-grade work, underground and aboveground piping, inlet and outlet water mains, overflow piping, valve and drain piping, connection to existing water main, perimeter fencing, asphalt paving, gravel entrance maintenance, site restoration, reseeding, electrical power supply, instrumentation, and integrated SCADA system work.
• The work required coordination with Caldwell Tanks, Westlake Development, Stafford County Department of Utilities, Bowman Consulting Group, utility providers, tank construction crews, electrical and instrumentation contractors, testing agencies, and project stakeholders.
• The project required compliance with the subcontract documents, project drawings and specifications, Caldwell bid drawings, Stafford County requirements, AWWA water storage tank requirements, pressure pipe testing and disinfection requirements, electrical and SCADA requirements, erosion and sediment control requirements, quality control requirements, and project closeout requirements.
• Johnston Construction Company performed work for the West Lake 750K Elevated Water Storage Tank project in Fredericksburg, Stafford County, Virginia. The executed subcontract identifies the project as Stafford Co, VA, C.T.I. E-9578 CF69, 750,000 Gallon Composite Tank, with Johnston Construction Company as subcontractor and Caldwell Tanks, Inc. as contractor. The project is owned by Westlake Development, LLC.
• The project location is Clark Patton Road, Fredericksburg, Virginia. The transmittal identifies the project as West Lake 750K EWST, project number 2025-10, located at 191 Clark Patton Road, Fredericksburg, VA 22406.
• The full project specifications identify the project as Westlake Development Elevated Water Storage Tank, Stafford County, Virginia, prepared by Bowman Consulting Group, Ltd. The specifications were originally dated March 2021 and revised in January 2025 and April 2025.
• JCC’s subcontract scope included supervision, labor, travel, expenses, materials, supplies, and equipment required to perform the work. The scope incorporated the project drawings, project specifications, applicable addenda, Caldwell bid drawings dated May 29, 2025, and the project schedule, where applicable.
• JCC’s work included erosion and sediment controls, including measures to maintain positive drainage and avoid saturation of subgrades. The scope also included staking, maintaining and protecting engineer-provided staking, initial site work, and coordination with the project team.
• The foundation work included construction of the tank foundation in accordance with Caldwell’s issued-for-construction design, installation of supplied ground rods, and slab-on-grade work after tank erection. JCC’s scope also included electrical conduit sleeves through the foundation, including conduits that may need to be capped and terminated below top of grade inside the tank foundation before foundation construction and extended to final length after tank construction.
• Piping work included all piping, valves, manholes, accessories, and fittings required to complete the piping design. JCC’s scope included piping testing and sterilization, with supporting documentation submitted to Caldwell.

Concrete Services Division

• Concrete Services Division, LLC performed concrete forming, placement, finishing, curing, and accessory work for the West Lake 750K Elevated Water Storage Tank project in Stafford County, Virginia.
• The overall project included construction of a new 750,000-gallon composite elevated water storage tank facility to serve the Westlake development and support Stafford County Department of Utilities’ water system.
• The tank was being constructed to create a 520 pressure zone along the northern portion of the Route 17 corridor and provide service to Westlake, a 701-lot community being developed by Westlake Development, LLC.
• CSD’s scope included forming and concrete placement for the tank foundation, including footing forming, slab-on-grade forming, curved wall forming, straight wall forming, footing placement, slab-on-grade placement, wall placement, float and screed work, trowel finishing, point and patch work, bagging, curing, and concrete accessory work.
• Major concrete work included mobilization and demobilization of concrete equipment, tools, and supplies; rental of form material; purchase of form lumber; installation and stripping of forms; concrete placement labor; concrete finishing labor and supplies; concrete curing labor and supplies; and concrete accessory material and labor.
• The concrete work required coordination with Johnston Construction Company, Caldwell Tanks, Westlake Development, Stafford County Department of Utilities, Bowman Consulting Group, concrete suppliers, testing agencies, pumping services, equipment providers, and project stakeholders.
• The work required compliance with contract documents, Drawings G-01 through G-03, Specification Section 013300 Contractor Submittals, Specification Section 033150 Cast-in-Place Concrete, CSD control estimate, Caldwell / CB&I project specifications, foundation drawings, concrete submittal requirements, testing requirements, safety requirements, and project closeout requirements.
• Concrete Services Division, LLC performed concrete construction work for the West Lake 750K Elevated Water Storage Tank project in Fredericksburg, Stafford County, Virginia. The full project specifications identify the project as Westlake Development Elevated Water Storage Tank, Stafford County, Virginia, prepared by Bowman Consulting Group, Ltd. The specifications were originally dated March 2021 and revised in January 2025 and April 2025.
• CSD performed the work under subcontract to Johnston Construction Company. The CSD subcontract, No. 202510SC01, was dated effective September 23, 2025, and identified Concrete Services Division, LLC as the subcontractor, Johnston Construction Company as the contractor, and the delivery location as West Lake 750K EWST, 191 Clark Patton Road, Fredericksburg, Virginia.
• CSD’s concrete scope included forming, placing, finishing, and curing associated with the elevated tank foundation. The scope included mobilizing and demobilizing concrete equipment, tools, and supplies to and from the jobsite; rental of form material; purchase of form lumber; installation and stripping of forms; concrete placement labor; concrete finishing labor and supplies; concrete curing labor and supplies; and concrete accessory material and labor.
• The concrete accessory work included labor and material for items such as PMJ, waterstop, caulk, and related accessories. The scope also included winter protection labor, resteel placing labor and supplies on a time-and-material basis to JCC, unloading rebar labor on a time-and-material basis with equipment by JCC, setting anchor bolts on a time-and-material basis to JCC, and coordination of concrete purchased by JCC.
• CSD coordinated concrete testing lab services paid for by JCC, concrete pumping services paid for by JCC, and rental of JCC and outside equipment paid for by JCC. The subcontract excluded excavation, backfill, stone subgrade, concrete material, concrete pumping rental, concrete testing services, retainage, and certain equipment provided by JCC, while still including coordination and placement support required for the concrete work.
• The subcontract billing worksheet identified approximately 305 cubic yards of concrete, 274.43 square feet of footing forming, 157.33 square feet of slab-on-grade forming, 1,162.39 square feet of curved wall forming, and 218.00 square feet of straight wall forming.
• The project specifications included Division 3 concrete requirements, including Section 033150 Cast-in-Place Concrete and Section 036000 Grout. The specifications also included related sections for contractor submittals, quality control, project closeout, composite elevated tank construction, piping, electrical, instrumentation, pressure pipe testing, disinfection, and startup.

Electrical Services Division

• Electrical Services Division performed electrical construction work for the West Lake 750K Elevated Water Storage Tank project in Stafford County, Virginia.
• The overall project included construction of a new 750,000-gallon composite elevated water storage tank facility to serve the Westlake development and support Stafford County Department of Utilities’ water system.
• The tank was being constructed to create a 520 pressure zone along the northern portion of the Route 17 corridor and provide service to Westlake, a 701-lot community being developed by Westlake Development, LLC.
• ESD’s scope included conduit, wire, connections, tank lighting, gear, heat tracing, electrical ground rods, ground ring connection, electrical excavation, wire labels, panel labels, conduit labels, phase monitor, inspection, testing, startup, and electrical closeout support.
• Major electrical work included Type A, Type B, Type C, Type D, and Type E tank lighting; 200A main disconnect; 200A Panel LP-1; 30A disconnect; heat tracing for the altitude valve line; electrical excavation for the ground ring, electrical service, and site work; and 12 future antenna conduits through the foundation.
• The electrical work required coordination with Johnston Construction Company, Caldwell Tanks, Westlake Development, Stafford County Department of Utilities, Bowman Consulting Group, utility providers, tank manufacturer, electrical suppliers, testing services, and project stakeholders.
• The work required compliance with the contract documents, Division 26000 electrical specifications, Division 331620 composite elevated tank specifications, Drawings GE-1 through GE-4, Drawings E-1 through E-5, Addendum 1, ESD proposal dated June 6, 2025, ESD control estimate, electrical submittal requirements, safety requirements, testing requirements, startup requirements, and closeout requirements.
• Electrical Services Division performed electrical construction work for the West Lake 750K Elevated Water Storage Tank project in Fredericksburg, Stafford County, Virginia. The full project specifications identify the project as Westlake Development Elevated Water Storage Tank, Stafford County, Virginia, prepared by Bowman Consulting Group, Ltd. The specifications were originally dated March 2021 and revised in January 2025 and April 2025.
• ESD performed the work under subcontract to Johnston Construction Company. The ESD subcontract, No. 202510SC02, was dated effective September 25, 2025, and identified Electrical Services Division as the subcontractor, Johnston Construction Company as the contractor, and the delivery location as West Lake 750K EWST, 191 Clark Patton Road, Fredericksburg, Virginia.
• ESD’s electrical scope included conduit, wire, and connections required for the elevated water storage tank electrical systems. The work also included tank lighting, gear, heat tracing for the altitude valve line, ground rods, ground ring connection, electrical excavation, labeling, phase monitor, inspection, testing, startup, and electrical closeout support.
• Tank lighting included one Type A fixture, one Type B fixture, one Type C fixture, fifteen Type D fixtures, and one Type E fixture. Gear included a 200A main disconnect, 200A Panel LP-1, and one 30A disconnect.
• The grounding and lightning protection support work included electrical ground rods connected to the base of the tank in four locations for the lightning protection ground ring. ESD included a ground ring to connect to the base of the water tank, while downleads for the lightning protection system were to be provided by the tank manufacturer for ESD to connect to the ground ring at the base of the tank.
• ESD’s underground electrical scope included electrical excavation for the ground ring, electrical service, and site work. The subcontract also included 12 four-inch PVC Schedule 80 conduits through the foundation for future antenna conduits.
• The electrical identification scope included labels for wires, panels, and conduits. The work also included a phase monitor, per diem and travel, sales tax, and electrical coordination necessary to complete the work under the subcontract.