We provide comprehensive underground and aboveground fuel tank services.

Seneca Companies has specialized in the provision and installation of both underground storage (UST) and aboveground storage (AST) systems for retail, commercial, marine and emergency uses since our inception in the early 1970’s.

We have established relationships with multiple manufacturers and vendors, ensuring that you are offered a variety of competitively priced, high-quality products.

Whether you need a tank that is aboveground or underground, steel or fiberglass, single or double walled, and/or vertical or horizontal, Seneca can provide what you need.

We carry We-Mac, J.L Houston Company and Lannon Tank Company steel tanks and Containment Solutions and Xerxes fiberglass tanks in various shapes and sizes. Split compartment tanks are offered in both steel and fiberglass with varying compartment sizes available. Additionally, our manufacturers offer made-to-order tanks, so you can special order a tank with specific openings and attachments.

Our tanks are suited for a variety of products and types of storage, including gasoline, diesel fuel, ethanol, DEF and kerosene, as well as storage needs for oil/water separators and lubricant tanks to store ATF, gear oils or washer fluid.

We supply and install tanks across our large corporate footprint, stretching from Montana to Kentucky and most points within our branch territories.

Seneca stands apart from competitors due to our ability to provide not only the tank, but the installation, tank monitoring and support services as well.

Ag Pumps, Tanks & Fittings

Trust Seneca to be your reliable resource for all farm pumps, tanks and fitting needs. We can offer sound advice and recommend specific packages to meet your needs, in addition to installing and servicing your system.

Seneca provides multiple options for fuel transfer tanks. We carry We-MacKay and PeeDee steel tanks and offer all shapes and sizes of fuel tanks including single wall, double wall, UL listed, containment basins, as well as lube tanks and poly storage tanks.

Our main line of fuel transfer pumps is Fill-Rite, supplied by Tuthill Transfer Systems. There are several options available, including:

  • Standard flow (15-20gpm) - These pumps have 3/4」 outlet and come in 12V or 115 Volt with a motor that ranges from 1/4 – 1/3 HP.
  • Medium flow (20-25gpm) - These pumps feature a 1」 outlet and are also available in 12V or 115Volt with a motor that ranges from 1/3 to 1/2 HP.
  • High flow (25-35gpm) - These pumps come in 1」 and are available in 12V and 115 Volt as well and feature a motor that ranges from 1/2 to 3/4 HP. 

We also carry any additional items you may need to complete your fueling system, including pumps, filters, hoses, nozzles, gauges, meters, vents, suction pipe, signage, spill containment and fill caps.

Although fueling is a common activity in agriculture, commercial and fleet industries, there are specific rules and regulations that need to be addressed. Seneca is well-versed in these regulations and will help you make sure your fuel system is compliant.

Whether you need a new fuel transfer tank or pump, or want to update what you have now, the experts at Seneca have got you covered.

ATG & Tank Monitoring Systems

Seneca offers Franklin Fueling automatic tank gauging (ATG) and monitoring systems.

These systems not only monitor inventory levels within the storage tanks and feature leak detection technology, but they also conduct automatic tank and line tests as required by most regulatory agencies for compliance. When connected to your network, they are fully capable of on-site notification, as well as remote notification of any inconsistencies or system problems.

We offer Franklin Fueling EVO™ series ATG, which allows you to make informed, data-driven inventory management features and keep your site in compliance.

With today’s significant costs for cleanups, these systems are invaluable for the early or immediate detection of any system problems that may result in a release to the environment.

Seneca provides 「The Complete Solution」 when it comes to monitoring systems due to our relationships with manufacturers, training program, in-house certified trainer and over 70 top-of-the-line factory-trained technicians strategically placed throughout the Midwest.

Tank Top Upgrades & Boot Repairs

If you are experiencing obvious leaks, corroded equipment, cracked piping, or if your sumps are susceptible to surface water accumulation, it’s time to call Seneca Companies. We provide complete tank top upgrades, maintenance and boot repairs to ensure your tanks continue to function efficiently and safely for years to come.

Due to the increasingly demanding environmental requirements of the petroleum industry, it’s important that your tanks are equipped with the required leak prevention and detection systems that are less likely to corrode and malfunction. Federal regulations are being implemented across the country, requiring that all spill manholes and sumps be tested for tightness. If they fail testing, they must be repaired or replaced. On all new installations where containments are present, Seneca performs hydrostatic or dri-sump testing to meet EPA testing regulations[TC3] .

Whether it’s installing entry boots to keep sumps tight and free of liquid, replacing under dispenser containment (UDC), or the repair or installation of spill containment manholes, we will provide the service you need to meet regulatory requirements.

If your project calls for more than a quick fix, we can build or rebuild your station according to the  latest environmental laws, with construction activities including, but not limited to:

  • Excavation of old concrete.
  • Installation of submersible turbine pumps (STP) in manway openings.
  • Running product piping from sumps to dispenser areas.
  • Running electrical conduits from STP manways and dispenser pads back to building.
  • Pressure testing product piping.
  • Backfilling trenches and tanks with crushed stone, once pressure test is successful.
  • Installation of probes and sensors into tanks, sumps and dispenser pans.
  • Installation of concrete pad and paving around perimeter of tank pad.
  • Replacement and repair of manholes, tank manways, drop tubes for fill riser pipes, test boots and fittings, and overfill protection valves.

With our large corporate footprint, we can handle a large multi-site rollout and projects spanning multiple states while having the close manpower, licensing and ability to perform projects. Whether it’s a single storage tank or a multi-site, Seneca Companies will create reliable and tailored solutions, equipping your tank with all necessary upgrades with minimal impact to your business operation.

Our experienced team provides 「The Complete Solution」 to your project needs, from construction, repair and maintenance to providing a variety of storage tank containment components. Contact Seneca Companies to ensure your fueling systems and sites have the proper safety and spill prevention components installed to meet regulatory requirements.