Containment Pads and Secondary Containment in Casper, Wyoming

A containment pad exists for the day something spills. When a hose lets go or a tank overflows, the concrete has to hold the liquid long enough for someone to respond, and a hairline crack at a joint is enough to turn a contained release into a release to the ground. We build containment as a system: slab, curbs, joints, sealants and slopes, all designed to hold liquid, not just to bear load.

Our work includes tank farm pads and dikes, loading rack slabs, chemical storage floors, truck unloading pads and wash-down areas. These are common around Casper because the energy and industrial economy runs on stored fluids. The engineer sets the thickness, the reinforcing and the coating or lining requirements. We build what the drawings show and test what we can.

The details are specific. Watertight joints, waterstops, chamfered corners and the slope to a sump or drain are not optional. We treat them as part of the structure from the first stake.

Rules that shape containment concrete

Containment is regulated by the owner's environmental permits, fire code requirements and any state or federal rules that apply to the stored product. The drawings usually cite the capacity the containment must hold, such as the largest tank plus an allowance. We do not size containment ourselves. We build it to the sealed plans and verify the dimensions.

The City of Casper lists the 2024 International Codes, including the Fire Code, and its commercial permits often call for engineered site drawings and plan review. Fire marshal review matters where flammable liquids are stored. We keep submittal records for the mix design, rebar, waterstops and sealants so the inspector sees a complete package, and so the owner has it for later audits.

Why this work is common here

The refinery on the east side of the metro rebuilt major units and added new tanks, and the former refinery property now known as Platte River Commons shows what can happen when spills or leaks are not controlled. A remedy agreement for that site was signed in 2002 and the property is still recovering from contamination. Owners across the metro have seen the cost of releases, and they specify containment seriously.

In Evansville, the Mystery Bridge Superfund site involves groundwater contamination believed to come from former industrial operations. Anyone building storage or loading areas near the river or the old industrial strip is aware of the history. Good concrete containment is cheap compared with the cost of cleanup, and that logic drives most of the specifications we see.

Joints, curbs and the slope to the sump

Subgrade comes first. We proof-roll and compact the base so settlement will not open a joint later. Reinforcing is closer-spaced than a typical slab to control cracking, and the pour uses a low-shrinkage mix when the engineer calls for it. Perimeter curbs or walls are cast monolithically with the slab where the details allow, because a cold joint is the weakest line in the system.

Where cold joints are unavoidable, we install waterstops and prepare the surface as specified. Contraction and expansion joints are sealed with chemically resistant sealants. The slab is sloped to a collection point, and the slope is checked with a level and a water test where the owner asks for one. We protect sealants during curing and add lining or coating after the slab reaches the required age and moisture level.

Plant rules and product hazards

Containment often goes in at active sites with hazards we cannot see. We attend the owner's safety orientation, review the safety data for any stored product, and follow hot-work and excavation permits. If an existing pad is being modified, we confirm that it has been drained, flushed and tested before any saw or breaker touches it.

Concrete work also carries its own hazards: wet cement burns skin, silica dust damages lungs and formwork can fail under load. We wet-cut where we can, use dust control on grinders and brief every crew each morning. Waste concrete washout is contained, and we do not let it run to a drain or the ground.

Owners who rely on containment

The main buyers are oil, gas and midstream operators, fuel distributors, industrial plants and municipal water or wastewater departments. Farms and processors with chemical storage also need pads, and so do contractors who are fueling equipment on site.

We build to the owner's documents. If there is no drawing, we recommend that the owner have a licensed engineer prepare one, because containment capacity and chemical compatibility are not guesses. Our role is to build the concrete correctly and hand over the records.

Work that ties into containment

A containment area almost always involves equipment pads for pumps and meters, trench drains to move water, and bollards to keep trucks off valves and piping. We coordinate these as one package so the penetrations, slopes and joints do not conflict.

When an existing containment pad fails, concrete repair often extends its life, but only if the cause is understood. A leak from a settled corner is a subgrade problem, not a sealant problem.

Send the containment package

Send the drawings, the stored product and the operating schedule. We will return a sequence that shows the cure times, the joint details and the inspection hold points.

Questions Owners Ask

How is containment concrete different from a normal slab?

It has to hold liquid. That means tighter reinforcing, sealed joints, waterstops where specified, a defined slope to a sump and often a coating. A normal slab can have a hairline crack and still work. A containment slab cannot.

Do you apply coatings or linings?

We coordinate with the coating applicator and prepare the concrete surface to their specification, including cure time and moisture testing. If you want us to coordinate the whole package, we can. The coating manufacturer sets the surface profile.

Can containment be poured in winter?

Yes, with protection. A frozen surface or a slab that freezes within the first day can scale and crack, which defeats the purpose. We heat, blanket and monitor temperature until the concrete has gained enough strength.

How do you test a containment pad?

Common tests include checking slope with a level, a flood test for leaks, and cylinder breaks for strength. The engineer or owner specifies what applies. We keep the results with the pour records.

What happens if a joint leaks later?

The joint sealant is the replaceable part. We can cut out the old sealant, clean the joint and install new sealant, but we first find why it failed. Movement from settlement or temperature has to be understood before the new sealant goes in.

Do you work in operating facilities?

Yes, with the owner's permits and rules in place. We stage deliveries, keep trucks on approved routes and brief the crew each day on the plant hazards.

Related

Ready to talk about your project?