Fields Farm 500,000-Gallon Composite Elevated Water Storage Tank

Key Accomplishments

Johnston Construction Company

• JCC performed its work under subcontract to Caldwell Tanks, Inc. for the Fields Farm 0.5 Million Gallon Elevated Water Storage Tank project.
• The overall project included a 500,000-gallon composite style elevated water storage tank, approximately 1,000 linear feet of permanent gravel access road, approximately 2,700 linear feet of 8-inch and 12-inch ductile iron water main and appurtenances, and a contingent temporary construction access road of up to 2,100 linear feet.
• JCC’s scope included erosion and sediment control, staking, initial site work, demolition of the existing tank and foundations, foundation work, piping, valves, manholes, electrical work, lightning protection, tank grounding, temporary and final access roads, fencing, drainage, grading, landscaping, seeding, testing, sterilization, as-builts, and closeout.
• The work required coordination with the Town of Purcellville, Caldwell Tanks, Kimley-Horn, Loudoun County, VDH, VDOT, tank construction personnel, electrical personnel, piping crews, testing agencies, inspectors, and project stakeholders.
• The project required compliance with Town of Purcellville requirements, Kimley-Horn project requirements, Loudoun County permitting requirements, Virginia Department of Health Waterworks requirements, VDOT permit requirements, erosion and sediment control requirements, water main requirements, tank construction requirements, electrical requirements, SCADA requirements, testing requirements, safety requirements, and closeout requirements.
• The subcontract agreement identifies Caldwell Tanks, Inc. as the contractor and Johnston Construction Company as the subcontractor for the Fields Farm 0.5 Million Gallon Elevated Water Storage Tank project, owned by the Town of Purcellville, Virginia.
• The subcontract required JCC to perform its work in accordance with the subcontract agreement, prime contract documents, project drawings, project specifications, applicable addenda, Caldwell drawings dated July 1, 2024, and the project schedule.
• The overall project included construction of a new 500,000-gallon composite style elevated water storage tank in the Town of Purcellville, Virginia. The work also included associated site work, a permanent gravel access road, approximately 2,700 linear feet of 8-inch and 12-inch ductile iron water main and appurtenances, and a contingent temporary construction access road.
• The project was prepared under Town IFB #EN-2024-10. The contract documents required substantial completion within 540 calendar days after Notice to Proceed and final completion within 570 calendar days after Notice to Proceed.
• JCC’s demolition work included demolition of the existing tank and foundations and restoration of disturbed areas. This work supported preparation of the project site for the new 500,000-gallon composite elevated water storage tank.
• Foundation work included construction of the tank foundation per Caldwell’s IFC design, installation of supplied ground rods, and slab-on-grade construction after tank erection. JCC also coordinated foundation work with Caldwell’s tank construction procedures and project sequencing.
• JCC’s piping scope included all piping, valves, manholes, accessories, and fittings required to complete the piping design. This included piping testing and sterilization, with supporting documentation submitted to Caldwell.

Concrete Services Division

• Concrete Services Division, LLC performed concrete construction work for the Fields Farm 0.5 Million Gallon Elevated Water Storage Tank project in Purcellville, Virginia.
• CSD performed its work under subcontract to Johnston Construction Company for concrete forming and placement associated with the Purcellville 500KGAL EWST project.
• CSD’s work was performed at Fields Farm Park Road, Purcellville, Virginia, with Johnston Construction Company serving as the contractor to CSD and Caldwell Tanks, Inc. serving as the tank contractor / prime contractor to the Town.
• CSD’s scope included mobilization and demobilization of concrete equipment, 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, concrete accessory labor, coordination and setting of foundation dowels, and coordination of concrete, testing, pumping, and equipment provided by JCC.
• Major concrete work included concrete, footing forming, slab-on-grade forming, curved wall forming, straight wall forming, column forming, footing placement, slab-on-grade placement, wall placement, column placement, float and screed work, trowel finishing, point and patch work, bagging, floor hardener, curing, accessories, dowels, and pipe pads.
• The work required coordination with Johnston Construction Company, Caldwell Tanks, the Town of Purcellville, Kimley-Horn, concrete suppliers, testing agencies, concrete pumping services, equipment providers, tank construction personnel, and project stakeholders.
• The project required compliance with project drawings C-104, C-107, C-300, and C-303, General Conditions, Supplementary Conditions, Erosion and Sediment Control, Concrete Reinforcement, Cast-in-Place Concrete, CSD control estimate, Caldwell project specifications, Caldwell foundation drawings, JCC schedule, safety requirements, submittal requirements, testing coordination requirements, and closeout requirements.
• Concrete Services Division, LLC performed concrete construction work for the Fields Farm 0.5 Million Gallon Elevated Water Storage Tank project in Purcellville, Loudoun County, Virginia. The work supported construction of the new 500,000-gallon composite elevated water storage tank for the Town of Purcellville.
• CSD performed the work under subcontract to Johnston Construction Company. The CSD subcontract, No. 202417SC01, was dated effective October 15, 2024, and identified Concrete Services Division, LLC as the subcontractor and Johnston Construction Company as the contractor. The delivery location was Purcellville 500KGAL EWST, Fields Farm Park Road, Purcellville, Virginia.
• The overall project included construction of a new 500,000-gallon composite style elevated water storage tank in the Town of Purcellville, Virginia. The project also included associated site work, a permanent gravel access road, approximately 2,700 linear feet of 8-inch and 12-inch ductile iron water main and appurtenances, and a contingent temporary construction access road.
• CSD’s work focused on the concrete construction required to support the elevated water storage tank facility. The scope included forming, placing, finishing, curing, floor hardener, accessories, dowels, and pipe pad work associated with the tank foundation, overflow structure, and related concrete components.
• The concrete 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; concrete finishing supplies; concrete curing labor; concrete curing supplies; and concrete accessory labor.
• CSD’s scope also included winter protection labor, re-steel placing labor and supplies on a time-and-material basis to JCC if performed, unloading rebar labor on a time-and-material basis to JCC if performed, coordination and setting of foundation dowels, setting anchor bolts on a time-and-material basis to JCC, concrete sidewalk on a time-and-material basis to JCC if performed, and coordination of concrete, testing lab, concrete pumping, and rental equipment provided by JCC.