Astumbo Water Tank
Structural steel scope: tank bottom and shell plate replacement, fit-up and welding.
General Contractor · Tank & Pipeline Specialists
Built right in Guam since 1994.
Tanks and pipelines are our specialty. As a general contractor, we bring the same drive to buildings, roofing, site work and mechanical systems, always looking for the best solution to get the job done.
- Founded
- 1994
- Years in operation
- 30+
- Unfinished jobs
- 0
- Serving
- Guam & the Pacific
From a welding shop to a full general contracting corporation, we’ve spent three decades doing the hard, heavy work that keeps Guam’s water, fuel and power running. Every project, every time, completed.
01 / Services
What we build, repair & maintain
Projects of every size, from a single valve replacement to a full building or tank rebuild. Tanks and pipelines are where we made our name. As a general contractor, we’re growing into new markets with our own crews, equipment and fleet, based right here in Tamuning.
- Water utilities
- Power generation
- Fuel terminals
- Ports & marine
- Government facilities
- Commercial & industrial
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01
General Construction
Buildings, pump houses, warehouse roofs, canopies and awnings, concrete slabs and trenches, fencing and demolition, delivered as prime contractor or subcontractor.
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02
Storage Tanks
Construction, repair and refurbishment of fuel and water storage tanks, including bottom, shell-course and roof replacement and internal floating roofs.
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03
Structural & Mechanical Welding
Certified welders for carbon and stainless steel: plate, pipe and structural work in the shop or in the field.
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04
Fuel & Process Piping
Fuel lines, Jet A1 and ULSD pipelines, inlet/outlet lines, pumps, valves, flow meters and power plant process piping.
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05
Sandblasting & Coatings
De-rusting, waterblasting, sandblasting and industrial painting of tanks, pipelines, smokestacks and plant buildings.
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06
HVAC Systems
Equipment supply and installation, chilled and condenser water piping, pumps, DDC controls, ducting, refrigerant and condensate piping, and insulation and cladding.
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07
Fire Protection
Sprinkler piping, firewater mains, fire foam lines and pump systems for terminals and industrial facilities.
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08
Power Plant Services
Design and refurbishment of exhaust systems, water treatment piping, smokestack repainting and canopy and structural work.
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09
Fabrication, Scaffolding & Manpower
Platforms, stairways, railings, canopies and pipe supports, scaffold erection, plus skilled manpower supply including certified welders and painters.
02 / Current Project
In progress
Malojloj Water Tank
Prime contractor: AR Pacific Garney Federal JV
We’re removing the tank’s original roof truss system and converting it to a center-column roof: a new center column supporting radial roof rafters, set from scaffolding inside and out.
- Removal of the existing roof truss system
- Conversion to a center-column roof design
- New center column and radial roof rafters
- Rigging, fit-up and scaffold access
03 / Projects
Before & after
Rusted shells and failing bottoms made structurally sound again. A few of the water storage tanks our welders have rebuilt across Guam.
Windward Hills No. 1
Structural steel scope: new tank bottom and first shell course replacement.
Pigua Malesso’ Tank
Structural steel repair of the tank, including night welding shifts to hold the schedule.
Sinifa Tank No. 2
Structural steel scope: shell repair and replacement steel, welded in place.
In the field
Tanks, pipelines, power plants and terminals across Guam and Saipan. Select a photo to enlarge.
Project experience
A selection of completed and ongoing work since 2015, from our company profile.
- Tanks
Fuel tank refurbishments: Tanks 1, 2, 4 & 5 de-rusting and painting, Tank 2 shell replacement
South Pacific Petroleum Corp.
Piti / Cabras fuel terminal
- Tanks
Tanks 1–4 refurbishment: interior sandblasting & painting, Tank 3 bottom replacement and shell repair
IP&E Holdings, LLC
Saipan tank terminal
- Tanks
Tank 2 internal floating roof (IFR) and VRU pipeline installation
IP&E Holdings, LLC
Saipan tank terminal
- Tanks
Tanks 1, 2 & 3 refurbishment with ATG upgrades, waterblasting and repainting
Supreme Group Guam, LLC
Fuel storage facility, Guam
- Tanks
Tank 1904 & 1905 roof and bottom replacement; Tanks 1901, 1929 & 1930 refurbishment
A-Tech Construction Corp.
Fuel tank farm, Guam
- Tanks
Tank 7 & 8 repair and repainting
IP&E Holdings, LLC
Fuel terminal, Guam
- Tanks
API 653 inspection & testing, interior sandblasting, painting and repair of Tanks T110 & T120
Temes Guam Inc.
Macheche Power Plant
- Tanks
Structural steel repairs of 10 water storage tanks: Agat-Umatac, Yigo No. 3, Windward Hills, Astumbo, Santa Ana, Pigua, Kaiser, Umatac Subdivision, Sinifa and Santa Rosa
AIC Corporation
Guam water system
- Tanks
Water tank repair and repaint
Temes Guam Inc.
Yigo Power Plant
- Tanks
Tank 22 stairway refurbishment
Mobil Oil Guam Inc.
Fuel terminal, Guam
- Pipelines & Piping
Design-build of new ULSD pipeline
AYM International Inc.
GPA tank farm
- Pipelines & Piping
Tank farm pipeline upgrade (design-build)
AYM International Inc.
GPA tank farm
- Pipelines & Piping
Fabrication and installation of new 10″ Jet A1 pipeline
IP&E Holdings, LLC
Fuel terminal, Guam
- Pipelines & Piping
Inlet & outlet pipeline replacements for Tanks 2, 5 & 6 and 4″ foam line replacement
South Pacific Petroleum Corp.
Piti / Cabras fuel terminal
- Pipelines & Piping
New 6″ firewater line, 2,700 linear feet
Tristar Terminal Guam Inc.
Fuel terminal, Agat
- Pipelines & Piping
De-rusting and painting of pipelines and tank
IP&E Holdings, LLC
F3 Terminal
- Pipelines & Piping
Stainless steel piping welding for water system projects
AIC Corporation
Guam
- Pipelines & Piping
Pump replacement at Bay 3; 100 HP pump installation with electrical and piping
IP&E Holdings, LLC
Cabras / Saipan terminals
- Pipelines & Piping
Bypass and flow meter line at Tank 8; oil-water separator with motor pumps and piping
Marianas Energy Co.
Energy facility, Guam
- Pipelines & Piping
New delivery & receiving piping, tank drain pipeline, berm railing and fire foam berm repair
Supreme Group Guam, LLC
Fuel storage facility, Guam
- Pipelines & Piping
Fire waterline repair and pipeline spot corrosion removal & repainting
Mobil Oil Guam Inc. / Port Authority of Guam
Fuel terminals, Guam
- Power Plants
Water treatment piping system modifications
Temes Guam Inc.
Macheche & Yigo Power Plants
- Power Plants
Smokestack #1 repainting
Temes Guam Inc.
Dededo Power Plant
- Power Plants
Interior building and engine exterior painting, Units 1 & 2
Temes Guam Inc.
Dededo CT Power Plant
- Power Plants
4″ foam line replacement
Temes Guam Inc.
Macheche Power Plant
- Power Plants
Diesel building painting
AYM International Inc.
GPA facilities
- Buildings & Site Work
Water treatment building replacement
Temes Guam Inc.
Yigo Power Plant
- Buildings & Site Work
Warehouse roof replacement
Guam Power Authority
Dededo Power Plant
- Buildings & Site Work
Generation building canopy replacement and garage awning/canopy
Guam Power Authority
GPA generation building
- Buildings & Site Work
Ukudo pump house building
Guam Advance Inc.
Piti tank farm
- Buildings & Site Work
Concrete floor slab, 20′ × 30′
Port Authority of Guam
Agat Marina
- Buildings & Site Work
Container trench upgrade
AYM International Inc.
Port Authority of Guam
- Buildings & Site Work
Loading gantry refurbishment
Able Corp.
Agat terminal
- Buildings & Site Work
Perimeter fence installation and fencing refurbishment
Tristar Terminal Guam Inc. / Mobil Oil Guam Inc.
Fuel terminals, Guam
- Buildings & Site Work
Demolition of delivery & receiving system; concrete fence wall and building repainting
Supreme Group Guam, LLC
Fuel storage facility, Guam
- Manpower
Manpower supply: certified welders, de-rusting and painting crews
South Pacific Petroleum Corp., Tristar Terminal Guam Inc., Mobil Oil Guam Inc., IP&E Holdings, LLC
Fuel terminals, Guam & Saipan
- Manpower
Valve replacement, platform fabrication and roof canopy installation
IP&E Holdings, LLC
Saipan tank terminal
Projects shown include work completed as a prime contractor and as a specialty subcontractor. On the water tank projects above, RDE performed the structural steel work; coatings were by others.
ClientsWho we’ve worked for
- South Pacific Petroleum Corp.
- Guam Power Authority
- Port Authority of Guam
- Mobil Oil Guam Inc.
- IP&E Holdings, LLC
- Tristar Terminal Guam Inc.
- Temes Guam Inc.
- AIC Corporation
- AYM International Inc.
- Supreme Group Guam, LLC
- Marianas Energy Co.
- Guam Advance Inc.
- A-Tech Construction Corp.
- Able Corp.
- AR Pacific Garney Federal JV
04 / Equipment
Our own equipment & scaffolding
We own and maintain our own fleet, and our crews erect their own scaffolding, so our crews show up ready to work.
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Scaffold erection
Frame and tower scaffolding erected by our own crews for tank shells, roofs, tank interiors and smokestacks.
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Boom truck
International crane-mounted flatbed for lifting and setting steel, pipe and equipment on site.
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Welding machines ×6
Diesel-powered Lincoln SAE-400, SA-250 and Ranger 305D, and Multiquip DLW300ESA (2) and SDW225SSA units.
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Air compressors ×3
Diesel-powered Airman PDS390S4B1 and two P185 towable units for air tools and surface prep.
30+
years without a single unfinished project
05 / About
Three decades of doing it right
We started in June 1994 as Rico’s General Construction, a mechanical and structural welding shop building and repairing fuel storage tanks, fuel lines and fire protection systems. Over the years we added power plant process piping, tank construction, exhaust system design, HVAC, and sandblasting and coatings.
In July 2024 we became RDE Mechanical Solutions Inc. It’s more than a new name. We’re now a full-scale corporation, built to take on the increasingly complex mechanical and industrial needs of Guam and the Pacific.
Our motto is simple: Make it happen. Tanks and pipelines are where we built our name. As a general contractor, we bring the same problem-solving to buildings, site work and new markets, always looking for the best solution for the job.
- 1994Founded as Rico’s General Construction: tank, fuel line and fire protection welding
- GrowthExpanded into power plant process piping and exhaust systems
- ExpansionAdded HVAC, sandblasting and coatings, and work across Guam and Saipan
- 2024Incorporated as RDE Mechanical Solutions Inc.
What drives us
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01
Clients first
Our clients are our most valuable asset. We build lasting relationships on trust, integrity and mutual respect.
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02
Value every day
Every project is delivered with the utmost quality, speed and cost-efficiency, whatever its size.
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03
Skilled people
Highly skilled professionals with a sharp focus on economy, speed and quality, on every shift.
The crew
The last roof I-beam on the hook, Malojloj Tank 
Pipe prep in the field 
Valve replacement crew
Got a job that needs doing? Let’s make it happen.
Tanks, pipelines, buildings or something new. Tell us about it and we’ll find the best solution.
Start a Quote06 / Contact
Let’s talk about your project
Send us the details and our team will get back to you.
- Mailing addressPO Box 12493
Tamuning, GU 96931 - Office hoursMon–Fri, 8:00 AM – 5:00 PM ChST