South Rehoboth District 1,000,000-Gallon Elevated Water Storage Tank

Key Accomplishments

Johnston Construction Company

• The foundation work included pile installation, pile testing, excavation, dewatering where required, spoil removal, concrete construction, backfill, compaction, and restoration.
• JCC completed site preparation, grading, erosion and sediment controls, drainage improvements, temporary access, and final restoration of the affected project areas.
• The work included installation of the water-main piping, valves, fittings, tank overflow piping, splash pad, storm drainage piping, and related site piping required for the completed facility.
• JCC furnished and installed the electrical service, distribution equipment, conduit, conductors, lighting, receptacles, controls, instrumentation pathways, equipment connections, and supporting electrical infrastructure.
• Construction was coordinated with CB&I’s fabrication and erection of the one-million-gallon spheroid elevated tank.
• JCC provided testing coordination, quality documentation, record drawings, operations and maintenance information, cleanup, demobilization, and project-closeout support.
• Johnston Construction Company performed the civil, mechanical, electrical, and instrumentation portion of the Elevated Storage Tank – South Rehoboth District project in Rehoboth, Delaware.
• The project provided Tidewater Utilities, Inc. with a new one-million-gallon elevated water-storage tank serving the South Rehoboth District in Sussex County.
• The contract documents identify Tidewater Utilities, Inc. as the Owner and Beacon Engineering, LLC as the Engineer. The overall project included a new 1,000,000-gallon pedestal spheroid elevated storage tank, foundation system, site work, water mains, overflow piping, drainage, electrical systems, testing, and associated improvements.
• CB&I Storage Solutions LLC entered into the prime contract with Tidewater Utilities and retained Johnston Construction Company as its subcontractor.
• JCC’s executed subcontract expressly identifies CB&I Storage Solutions LLC as the contracting company and Johnston Construction Company as the subcontractor.
• The subcontract’s detailed scope states that JCC’s base responsibilities included the civil, mechanical, and electrical work related to construction of the one-million-gallon elevated water-storage tank, including the tank foundation, site preparation, and electrical systems.

Concrete Services Division

• Concrete Services Division, LLC performed the concrete construction supporting the new one-million-gallon South Rehoboth District elevated water-storage tank.
• CSD formed and placed the reinforced-concrete tank foundation in accordance with the project documents and CB&I foundation drawings.
• The work included the tank floor slab, curved foundation walls, splash pad, pipe-support pads, door pad, sump pit, and associated concrete elements.
• CSD installed footing, slab-on-grade, and curved-wall formwork and completed the required form stripping after the concrete achieved sufficient strength.
• The company coordinated the placement of approximately 116 cubic yards of concrete purchased by Johnston Construction Company.
• CSD placed approximately 5.31 tons of reinforcing steel and nearly 789 square feet of welded-wire mesh.
• The concrete work included floating, screeding, machine-trowel finishing, point-and-patch repairs, curing, concrete accessories, and winter-protection labor.
• Seven concrete pipe pads were constructed to support the piping associated with the elevated tank system.
• CSD coordinated concrete pumping, testing, reinforcing-steel handling, equipment use, anchor-bolt setting, and construction sequencing with JCC.
• Concrete Services Division, LLC performed the concrete portion of the Elevated Storage Tank – South Rehoboth District project in Sussex County, Delaware.
• The overall project provided Tidewater Utilities, Inc. with a new one-million-gallon elevated water-storage tank serving the South Rehoboth District.
• Beacon Engineering, LLC served as the Engineer. CB&I Storage Solutions LLC retained Johnston Construction Company to perform the civil, foundation, mechanical, electrical, and instrumentation work, and JCC retained CSD for the assigned concrete construction.
• The subcontract required CSD to furnish the labor, materials, tools, supplies, and supervision necessary for forming and placing the tank foundation, splash pad, pipe pads, floor slab, door pad, sump pit, and anchor bolts.
• The work was governed by the project contract documents, Drawings 2, 8, and 9, the cast-in-place concrete requirements, the CSD control estimate, CB&I project specifications, and CB&I foundation drawings.

Electrical Services Division

• Electrical Services Division, LLC performed the electrical construction supporting the new one-million-gallon South Rehoboth District elevated water-storage tank.
• ESD furnished and installed conduit, conductors, boxes, devices, switches, receptacles, and electrical connections throughout the tank site.
• The work included a new electrical rack, utility-meter provisions, main disconnect, lighting panel, and surge-protection equipment.
• ESD installed lighting fixtures serving the elevated tank structure and associated operational and maintenance areas.
• The project included underground duct bank, conduit, grounding, and conductors serving the site gate operators.
• ESD coordinated its installation with the tank foundation, elevated steel structure, water piping, ladders, handrails, site improvements, and equipment furnished by others.
• The company provided an instrumentation termination box and coordinated the electrical interfaces required for systems installed by other project participants.
• ESD supported electrical inspection, startup, closeout documentation, and preparation of final as-built record drawings.
• Electrical Services Division, LLC performed the electrical portion of the Elevated Storage Tank – South Rehoboth District project in Sussex County, Delaware.
• The project provided Tidewater Utilities, Inc. with a new one-million-gallon elevated water-storage tank serving the South Rehoboth District.
• Arro Consulting, Inc. is identified in the ESD project record as the engineer organization associated with the electrical work. Matthew Warfel served as the engineer contact for Arro Consulting, Inc.
• CB&I Storage Solutions LLC retained Johnston Construction Company to perform the assigned civil, mechanical, electrical, and instrumentation construction for the overall project. JCC subsequently retained Electrical Services Division, LLC to perform the electrical work included in ESD’s subcontract.
• The subcontract required ESD to furnish the labor, materials, tools, equipment, supervision, and supporting services necessary to complete the electrical work for the Rehoboth elevated water-storage tank.
• The work was governed by Specification Sections 16001, 16010, 16050, and 16500; Drawings 2, 8, and 10; Addenda 1 through 3; ESD’s July 6, 2021 proposal; and the ESD control estimate.