The first hour of a spill decides the cost
Everything expensive about a release happens after the product reaches soil. The window to prevent that is short.
The cost curve is not linear
A leak caught on an impervious surface is a clean-up. The same leak that reaches native soil becomes excavation, disposal, characterization, possibly reporting, and a site that has to be restored. The volume did not change. What changed is that the product left a surface you controlled.
That is why response time dominates the economics. The question is not how good your spill kit is — it is how many minutes pass between the leak starting and something impervious being underneath it.
Why fetched containment arrives late
Containment stored in a conex on the far side of a location has to be noticed, retrieved, carried and deployed, usually by people who are simultaneously trying to stop the source. In practice the product reaches soil during that interval. Containment that is already under the equipment does not have this problem, because the decision was made before the leak.
- Under pumps, compressors and anything with a seal that can weep.
- Under temporary tanks and totes, where the connection is newest.
- Across traffic lanes where a drip becomes a track that spreads.
- Around equipment laid down on unprotected ground between jobs.
- At transfer points — loading, unloading, and hose connections.
Why drive-over rating is the deciding feature
Portable containment that cannot take traffic gets pulled every time a truck needs through, and it does not always go back. A drive-over rated mat stays where it was placed for the duration of the work, which is the only way pre-emptive containment survives contact with an active location.
Being made to the site matters for the same reason. Off-the-shelf sizes leave gaps at exactly the points where equipment does not fit the rectangle, and a gap is where the product goes.
What this costs if it is missed A release that reaches soil may trigger reporting obligations that a contained release does not. The difference between the two is frequently a sheet of material that cost very little and was either already there or was not.
You probably need this if
- You have equipment sitting directly on native soil.
- Your portable containment lives in storage rather than under equipment.
- You have had a small leak spread further than expected.
- Traffic crosses areas where product is transferred.
- Temporary tanks or totes are in use on the location.
This guide is general information, not a compliance determination for your site. Requirements depend on your specific facility, jurisdiction and authority having jurisdiction. Talk to us or to your regulator before relying on it.
More guides
- Does my site need secondary containment? “I have tanks on site and I am not sure what the rules require.”
- What EMI tubing inspection finds “We are pulling tubing anyway — is it worth scanning it?”
- Why an unrestrained line whips, and what to do about it “We have iron and hoses running everywhere and no restraints on them.”