Monrovia Tank No. 2 – 1 MG Elevated Water Storage Tank

Key Accomplishments

Johnston Construction Company

• JCC performed its work under subcontract to CB&I Storage Tank Solutions, LLC for the civil, mechanical, electrical, and instrumentation work associated with the Monrovia Tank No. 2 project.
• The technical specifications were prepared for Monrovia Tank No. 2, Contract 223-W, Frederick County, Maryland, by McCrone.
• The geotechnical information described the proposed construction as a new one million gallon elevated water storage tank in the Monrovia area of Frederick County, Maryland.
• The work required coordination with Frederick County, CB&I Storage Tank Solutions, McCrone, tank construction personnel, civil crews, mechanical crews, electrical and instrumentation personnel, SCADA personnel, equipment suppliers, testing agencies, inspectors, and project stakeholders.
• The project required compliance with Frederick County Standard Specifications, McCrone technical specifications, CB&I requirements, site safety requirements, quality requirements, civil construction requirements, mechanical piping requirements, electrical requirements, instrumentation requirements, SCADA requirements, testing requirements, startup requirements, and closeout requirements.
• Johnston Construction Company performed civil, mechanical, electrical, and instrumentation construction work for the Monrovia Tank No. 2 project in Monrovia, Frederick County, Maryland. The project supported Frederick County’s water system through construction of a new 1,000,000-gallon hydropillar elevated water storage tank.
• The subcontract agreement identifies CB&I Storage Tank Solutions, LLC as the company and Johnston Construction Company as the subcontractor. CB&I entered into the prime contract with County of Frederick for completion of the Monrovia Tank No. 2 project, and JCC was engaged to perform the civil, mechanical, electrical, and instrumentation subcontract work.
• The subcontract was effective January 31, 2025, and covered civil, mechanical, electrical, and instrumentation work for the Monrovia Tank No. 2 project.
• The technical specifications identify the project as Monrovia Tank No. 2, Contract 223-W, Frederick County, Maryland, prepared by McCrone. The specifications incorporated Frederick County Standard Specifications by reference and included project-specific technical sections for the elevated water storage tank and associated site, mechanical, electrical, and instrumentation work.
• The overall project included construction of a new one million gallon elevated water storage tank. The geotechnical study described the proposed tank as a 1,000,000-gallon elevated water storage tank in the Monrovia area of Frederick County, Maryland, with the tank site evaluated for foundation design and construction considerations.
• JCC’s work supported the construction of the new hydropillar elevated tank facility by providing civil, mechanical, electrical, and instrumentation construction associated with the tank, valve room, chlorine room, site improvements, process systems, and operational support systems.
• Civil work included site coordination, temporary facilities, construction access coordination, site protection, excavation coordination, backfill coordination, foundation support work, concrete coordination, grout work, fencing coordination, restoration coordination, and related construction activities required for the tank site.

Concrete Services Division

• Concrete Services Division, LLC performed concrete construction work for the Monrovia Tank No. 2 project in Monrovia, Maryland.
• The project included construction of a new 1,000,000-gallon hydropillar elevated water storage tank for Frederick County, Maryland.
• CSD performed its work under subcontract to Johnston Construction Company for forming and concrete placement associated with the Monrovia 1MGAL Elevated Water Storage Tank project.
• 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, and concrete accessory labor.
• Major concrete work included concrete, footing forming, slab-on-grade forming, curved wall forming, footing placement, slab-on-grade placement, wall placement, float and screed work, trowel finishing, point and patch work, bagging, curing, accessories, equipment pads, and pipe pads.
• The technical specifications were prepared for Monrovia Tank No. 2, Contract 223-W, Frederick County, Maryland, by McCrone.
• The work required coordination with Johnston Construction Company, Frederick County, CB&I Storage Tank Solutions, McCrone, concrete suppliers, testing agencies, concrete pumping services, equipment providers, tank construction personnel, and project stakeholders.
• The project required compliance with Frederick County Standard Specifications, McCrone technical specifications, CB&I project specifications, CB&I foundation drawings, CSD control estimate, project drawings C-2 and M-1 through M-5, JCC schedule, safety requirements, quality requirements, testing coordination requirements, and closeout requirements.
• Concrete Services Division, LLC performed concrete construction work for the Monrovia Tank No. 2 project at 11058 Fingerboard Road, Monrovia, Maryland. The work supported construction of the new 1,000,000-gallon hydropillar elevated water storage tank for Frederick County, Maryland.
• CSD performed the work under subcontract to Johnston Construction Company. The CSD subcontract, No. 202416SC01, was dated effective October 2, 2024, and identified Concrete Services Division, LLC as the subcontractor and Johnston Construction Company as the contractor. The delivery location was Monrovia 1000mgal EWST, 11058 Fingerboard Road, Monrovia, Maryland.
• The overall project included construction of a new 1,000,000-gallon elevated water storage tank. The technical specifications identify the project as Monrovia Tank No. 2, Contract 223-W, Frederick County, Maryland, prepared by McCrone.
• CSD’s work focused on the concrete construction required to support the elevated water storage tank facility. The scope included forming, placing, finishing, curing, and accessory work associated with the tank foundation, derrick slab, tank slab, splash pad, pipe pads, equipment pads, 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, setting anchor bolts on a time-and-material basis to JCC if performed, coordination of concrete purchased by JCC, coordination of testing lab services paid for by JCC, coordination of concrete pumping services paid for by JCC, and coordination of JCC and outside equipment rentals paid for by JCC.

Electrical Services Division

• Electrical Services Division, LLC performed electrical construction work for the Monrovia Tank No. 2 project in Monrovia, Maryland.
• The project included construction of a new 1,000,000-gallon hydropillar elevated water storage tank for Frederick County, Maryland.
• ESD performed its work under subcontract to Johnston Construction Company for the electrical work associated with the Monrovia 1MGAL Elevated Water Storage Tank project.
• ESD’s scope included conduit, wire, connections, tank lighting, electrical gear, heat tracing, ground rods, ground ring work, electrical excavation, electrical service ductbank work, testing, startup, and closeout.
• The electrical work was based on Division 16000 specification sections, Drawings E1.0 through E4.1, Addendum 1, ESD Proposal from Ron Owens dated May 31, 2024, and the ESD Control Estimate.
• The technical specifications were prepared for Monrovia Tank No. 2, Contract 223-W, Frederick County, Maryland, by McCrone.
• The work required coordination with Johnston Construction Company, Frederick County, CB&I Storage Tank Solutions, McCrone, tank construction personnel, electrical suppliers, utility coordination personnel, testing personnel, equipment providers, and project stakeholders.
• The project required compliance with Frederick County Standard Specifications, McCrone technical specifications, Division 16000 electrical specifications, project electrical drawings, Addendum 1, CB&I requirements, JCC schedule, safety requirements, submittal requirements, testing requirements, startup requirements, Buy American requirements, Maryland Buy American Steel Act requirements, Davis Bacon requirements, and closeout requirements.
• Electrical Services Division, LLC performed electrical construction work for the Monrovia Tank No. 2 project at 11058 Fingerboard Road, Monrovia, Maryland. The work supported construction of the new 1,000,000-gallon hydropillar elevated water storage tank for Frederick County, Maryland.
• ESD performed the work under subcontract to Johnston Construction Company. The ESD subcontract, No. 202416SC04, was dated effective February 17, 2025, and identified Electrical Services Division as the subcontractor and Johnston Construction Company as the contractor. The delivery location was Monrovia 1000mgal EWST, 11058 Fingerboard Road, Monrovia, Maryland.
• The overall project included construction of a new 1,000,000-gallon elevated water storage tank. The technical specifications identify the project as Monrovia Tank No. 2, Contract 223-W, Frederick County, Maryland, prepared by McCrone.
• Tank lighting work included Type A fixtures, Type A1 fixtures, Type B fixtures, Type C fixtures, Type D fixtures, Type EM fixtures, and Type C combination exit signs. The subcontract identified four Type A fixtures, nine Type A1 fixtures, nine Type B fixtures, one Type C fixture, three Type D fixtures, four Type EM fixtures, and two Type C combination exit signs.
• Electrical gear included the meter socket, Panel TH, surge protection device, Littelfuse #102A power monitor relay, Panel TL, combination starter, disconnects, contactor, manual motor starters, and 2VA two-pole contactor. This gear supported electrical service, equipment control, protection, monitoring, and power distribution for the elevated tank facility.
• Grounding work included four ground rods and a ground ring for lightning protection. ESD’s scope included electrical ground rods to connect to the base of the tank in four locations for the lightning protection ground ring, with downleads from the top of the tank provided by the tank manufacturer.