Federal Street 500,000-Gallon Elevated Water Storage Tank

Key Accomplishments

Johnston Construction Company

• JCC’s scope included site preparation, erosion and sedimentation controls, site cut/fill, finish grading, seeding, temporary stone access road and laydown area, water main and force main piping, tank foundation construction, Rammed Aggregate Pier ground improvement coordination, dewatering, electrical conduit and wiring, electrical ductbank, lighting, instrumentation, testing, and closeout support.
• Major work included mobilization, submittals, sediment control BMPs, traffic control signage, open-cut force main installation, under-structure piping, fire hydrant and piping installation, thrust blocks, resilient wedge gate valve installation, water main pressure testing and disinfection, tank foundation excavation, mud slab, stone sub-base, footer and wall forming, rebar, concrete placement, tank slab, splash pad, backfill, and interior ductile iron pipe.
• The work required coordination with CB&I Storage Tank Solutions, Veolia, the Town of Milton, Pennoni Associates, utility providers, ground improvement subcontractors, electrical suppliers, inspection/testing agencies, and other project stakeholders.
• The project required compliance with project specifications, Addenda 1 and 2, AIS/BABA requirements, Delaware gross receipts tax requirements, prevailing wage requirements where applicable, safety requirements, quality control documentation, submittals, as-built documentation, pressure testing, disinfection, and closeout deliverables.
• Johnston Construction Company performed civil, mechanical, electrical, and instrumentation work for the Federal Street Elevated Water Storage project in Milton, Delaware. The overall project included construction of a new 500,000-gallon elevated water storage tank for the Town of Milton, located at the Federal Street water storage site in Milton, Delaware.
• JCC’s scope included the civil, mechanical, electrical, and instrumentation work required to support construction of the new 500,000-gallon elevated water storage tank. The work was performed in accordance with the CB&I subcontract documents, the Federal Street Elevated Water Storage specifications and contract documents, Addenda 1 and 2, Pennoni project documents, CB&I foundation drawings, tank electrical and instrumentation drawings, and related project requirements.
• Site work included erosion and sedimentation control installation and maintenance while JCC was onsite, site preparation, site cut/fill, finish grading, topsoil spreading, seeding, temporary stone access road construction, temporary laydown construction, and removal/disposal of temporary stone. JCC also included construction traffic signage at the site entrance to support construction access.
• JCC constructed and removed a temporary stone access road and laydown area for tank construction. The access and laydown work included an estimated 14,000 square feet of gravel road and laydown area, generally consisting of six inches of crushed stone over geotextile fabric, with limits generally around the tank foundation and a gravel road leading to the tank area.
• The project required ground improvement work to support the elevated water storage tank foundation. JCC’s scope included hiring and coordinating the subgrade improvement subcontractor for Rammed Aggregate Piers, including RAP mobilization, modulus testing, RAP installation, layout support, and supervision support as required.
• Electrical and instrumentation work included tank electrical work, electrical conduit and wiring, electrical ductbank, electrical boxes, devices, and gear, electrical lighting, and instrumentation. JCC coordinated electrical and instrumentation work with CB&I’s tank drawings, including coordination of panel backboards, conduit clips, fixture locations, and electrical installation items required for the tank system.
• Through this work, Johnston Construction Company supported completion of the Federal Street Elevated Water Storage project by providing the civil, mechanical, electrical, instrumentation, foundation, ground improvement, piping, site work, testing, and closeout support required for the new 500,000-gallon elevated water storage tank serving the Town of Milton, Delaware.

Concrete Services Division

• Concrete Services Division, LLC performed concrete forming, placement, finishing, curing, and accessory work for the new Federal Street 500,000-gallon elevated water storage tank in Milton, Delaware.
• The project included construction of a new 500,000-gallon elevated water storage tank, associated site grading, foundation work, electrical work, piping work, and connection to the Town of Milton water system.
• CSD’s scope included concrete work for the tank foundation, tank slab, and splash pad, including forming, concrete placement, finishing, curing, rebar dowel installation, sawcut joints, joint sealing, and concrete accessory work.
• Major work included mobilization, form material rental, form lumber purchase, installation and stripping of forms, footing forming, slab-on-grade forming, curved wall forming, footing placement, slab placement, wall placement, float and screed work, trowel finishing, point and patch work, bagging, curing, and concrete accessory installation.
• The concrete work required coordination with Johnston Construction Company, CB&I Storage Tank Solutions, the Town of Milton, Pennoni Associates, concrete suppliers, testing agencies, pumping services, equipment providers, and other project stakeholders.
• The work required compliance with project specifications, General Conditions, Special Conditions, Submittal Procedure, Earth Moving, Erosion and Sediment Control, Elevated Water Tank specifications, CB&I project specifications, CB&I foundation drawings, safety requirements, quality control requirements, and project closeout requirements.
• Concrete Services Division, LLC performed concrete construction work for the Federal Street Elevated Water Storage project in Milton, Delaware. The overall project included construction of a new 500,000-gallon elevated water storage tank for the Town of Milton, located at the Federal Street water storage site in Milton, Delaware.
• The project included construction of the new elevated water storage tank, associated site grading and foundation work, electrical and piping work, and connection to the existing water system. The project was designed by Pennoni Associates Inc. for the Town of Milton under Contract 2024-004.
• The concrete scope included forming, placing, finishing, and curing of concrete, along with installation of rebar dowels. CSD’s work included mobilization and demobilization of 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 finishing and accessory work included approximately 1,314.56 square feet of float and screed work, 421.52 square feet of trowel machine finishing, 878.25 square feet of point and patch work, 38.75 square feet of bagging, 2,811.97 square feet of curing, 46.33 linear feet of sawcut joints, and 119.11 linear feet of joint sealing.
• CSD also coordinated concrete purchased by Johnston Construction Company, 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 scope also included winter protection labor, resteel placing labor and supplies on a time-and-material basis to JCC, unloading rebar labor with equipment by JCC, setting anchor bolts on a time-and-material basis to JCC, prevailing wage rates, per diem, travel, and sales tax.
• The concrete work supported the foundation system required for the new elevated water storage tank. The overall project required construction of a new 500,000-gallon elevated water storage tank, with geotechnical recommendations noting that traditional shallow foundations were not considered practical for the proposed tank and that shallow foundations with ground improvement or auger cast-in-place pile foundations were practical foundation options for the site.
• Through this work, Concrete Services Division supported Johnston Construction Company’s completion of the Federal Street Elevated Water Storage project by providing the forming, placement, finishing, curing, dowel installation, joint work, accessory installation, and concrete coordination required for the new 500,000-gallon elevated water storage tank foundation, slab, and splash pad.

Electrical Services Division

• Electrical Services Division, LLC performed electrical construction work for the new Federal Street 500,000-gallon elevated water storage tank in Milton, Delaware.
• The project included construction of a new 500,000-gallon elevated water storage tank, associated site grading, foundation work, electrical work, piping work, and connection to the Town of Milton water system.
• ESD’s scope included conduit, wire, connections, lighting, switches, receptacles, mixer conduit, cathodic protection conduit, direct-burial electrical ductbank excavation, junction boxes, grounding, testing, startup, and record drawing support.
• Major electrical work included installation of wall pack lighting, jelly jar fixtures, miscellaneous breakers in the existing panel, miscellaneous junction boxes, electrical ductbank work, grounding connection to the existing triad, inspection, testing, startup, and coordination of materials provided by others.
• The work required coordination with Johnston Construction Company, CB&I Storage Tank Solutions, the Town of Milton, Pennoni Associates, electrical suppliers, testing services, equipment providers, utility providers, and project stakeholders.
• The work required compliance with project specifications, Section 331619 Elevated Water Tank, Drawings C1701, E1701, and E6001, Addenda 1 and 2, ESD proposal requirements, ESD control estimate, Davis-Bacon wage requirements, Buy American / AIS / BABA requirements, safety requirements, submittal requirements, O&M manual requirements, testing, startup, and project closeout requirements.
• Electrical Services Division, LLC performed electrical construction work for the Federal Street Elevated Water Storage project in Milton, Delaware. The overall project included construction of a new 500,000-gallon elevated water storage tank for the Town of Milton, located at the Federal Street water storage site in Milton, Delaware.
• The project included construction of the new elevated water storage tank, associated site grading and foundation work, electrical and piping work, and connection to the existing water system. The project was designed by Pennoni Associates Inc. for the Town of Milton under Contract 2024-004.
• ESD’s scope was performed under subcontract to Johnston Construction Company for the Federal Street 500kgal EWST project. The subcontract included furnishing all labor, materials, and tools necessary for the electrical work in accordance with the contract documents, Specification Section 331619, Drawings C1701, E1701, and E6001, Addenda 1 and 2, the ESD proposal from Ronald J. Owens dated January 28, 2025, and the ESD control estimate.
• The electrical scope included furnishing and installing conduit, wire, and connections required for the elevated water storage tank electrical systems. ESD also furnished and installed lights, switches, receptacles, miscellaneous junction boxes, and miscellaneous breakers in the existing panel.
• Lighting work included installation of one wall pack and ten jelly jar fixtures. The work also included electrical support for the tank mixer system, including installation of mixer conduit and cathodic protection conduit, with the mixer itself installed by others.
• ESD’s site electrical work included excavation of direct-burial electrical ductbanks and coordination of underground electrical pathways. The electrical ductbank scope included excavation, bedding, backfill, conduit support, and related coordination required to route electrical power and control wiring to the tank area.
• The electrical work also included grounding to connect to the existing triad. The subcontract specifically excluded a new ground ring loop, SCADA integration, instrumentation, the mixer and mixer cathodic protection system, temporary electric, heat trace, sleeves through the foundation wall and slab, arc flash study, coordination studies, utility company costs, building permit, and final site restoration.
• ESD coordinated the review of required submittals and O&M manuals, coordinated materials provided by others, coordinated testing services, coordinated rental of JCC and outside equipment, and provided as-built / record drawings upon project completion.