Mobil Gas Service Station – Underground Storage Tank, Dispenser and Product Piping Installation

Mobil Gas Service Station – Underground Storage Tank, Dispenser and Product Piping Installation

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Our Gas Service Station Fuel Storage Tanks Installation Process

Berlin, Massachusetts – An area Mobil station property owned by Energy North Group needed CommTank services. Our CommTank team installed gas station underground tanks and dispenser and product piping.

The service scope of this project for Mobil included removal of three underground gas station storage tanks:

  • One 4,000-gallon regular unleaded gasoline UST
  • One 8,000-super unleaded gasoline UST
  • One 6,000-gallon diesel UST

All three original Mobil gas station tanks were replaced with two modern gas station fuel storage tanks:

  • One 21,000-gallon dual compartment gasoline tank
  • One 10,000-gallon diesel tank

The Mobil project also included the replacement of 5 fuel dispenser systems with Gilbarco Encore 700 S models.

Our Gas Station Fuel Storage Tanks Installation Process

Area CommTank people began this underground gas tank for gas station project by installing fencing around the construction site to protect pedestrians and convenience store patrons from site work and debris.

Gas station under construction in Berlin Massachusetts

The following process of gas station fuel storage tanks installation began once the worksite was safe and secure for both the convenience store customers and CommTank professionals:

  • Removed the existing gas station tanks and diesel fuel dispensers to be replaced, and broke up the concrete around the fuel island and buried USTs
  • Removed four steel underground tanks from the site and relocated them to a recycling yard
  • Prepared the gas station underground tanks graves for the new USTs by leveling, adding a crushed stone base, and placing concrete dead men to use as anchors
  • Gas station under construction in Berlin MassachusettsDelivered and installed two new Containment Solutions  double-wall fiberglass USTs; a 20,000-gallon and a 12,000-gallon split compartment tank
  • Backfilled the excavation and new gas station tanks with crushed stone before the crew stopped to re-test the underground tanks for tightness
  • Landscape fabric use will prevent native soil from mixing with the new stone
  • Installed fiberglass sumps and 5-gallon spill buckets, along with the gas dispenser sumps
  • Ran double-wall fuel lines from the fiberglass tanks to the dispensers
  • Tested the secondary containment of the fuel lines to ensure they were installed correctly
  • Pressurized the fuel lines to test all the connectors and fittings and filled the dispenser sumps with water as part of a hydrostatic test
  • Connected storm drain pipes to the canopy gutters and then piped to a dry well to remove collected rainwater
  • Replaced the native soil over the USTs and compacted it to prevent future settling. This provided a solid base for the new tank pad that was installed on top of the USTs
  • Constructed and leveled a frame with rebar grids before the concrete was poured
  • Applied a broom finish to the gas station storage tanks pad to provide a non-skid surface
  • Installed new piping to connect the fuel dispensers to the gasoline and diesel submersible pumps
  • Fed sensor wires through piping to the Veeder-Root TLS 350 system, which was programmed to measure high and low levels and provide leak detection   
  • Outfitted the new Gilbarco 700 Encore 700 S gasoline and diesel pumps with numbers and Mobil badging before the station successfully reopened for business

Completed gas station construction project

For more details about CommTank’s underground gas tank for gas station services, call us at 1-800-628-8260.


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