Satellite Accumulation Area Walkthrough: 82 Gallons, No Dates, One Leaker
Ridgeline Fabrication is a large quantity generator (about 2,300 kg per month of listed and characteristic waste) in a 40-year-old building. The maintenance shop's satellite accumulation area is a curtained corner of the parts-washer room. On a Tuesday walkthrough the EHS coordinator finds: a 55-gallon open-head drum of spent mineral spirits with a funnel left in the bung; a 30-gallon drum, unlabeled, holding about 25 gallons of the same solvent, sitting in a plastic tray; a 5-gallon pail of solvent-soaked disposable rags; and a rusted-through 16-gallon keg, empty but stained, against the wall. The 30-gallon drum has a pinhole leak; about a cup has run into the tray. No container in the room bears a date. Total liquid waste in the area is roughly 82 gallons. The shop supervisor calls the area 'just a staging spot' and says drums are moved 'whenever the 90-day guy comes.' The floor is bare concrete, there is no drain in the room, but the door opens onto a loading dock apron with a storm drain 20 feet away.
1. Identify each container-management deficiency and state the corrective action and regulatory basis, in priority order.
Read the worked answer
1) Stop the release. The leaking 30-gallon drum is not in good condition; 40 CFR 262.15(a)(2) requires SAA containers to be in good condition and free of leaks. Overpack into a DOT salvage drum or transfer contents, then clean up the cup of solvent as a hazardous waste spill.
2) Close the 55-gallon drum. 262.15(a)(4) requires containers to be closed except when waste is being added or removed. A funnel left in the bung is an open container: ignition/vapor hazard and a violation.
3) Mark and date every container. 262.15(a)(5) requires the words 'Hazardous Waste' and (a)(6) requires the date accumulation began in that container. None are marked.
4) Address the 55-gallon limit. 262.15(a) permits up to 55 gallons of non-acute waste per SAA. At 82 gallons the area is over the limit; under 262.15(b) the excess must be moved to the 90-day area within three consecutive days, and the container that pushed the area over 55 gallons must be marked with the date the limit was exceeded.
5) Fix the siting. The 'staging spot' language matters: the area must be at or near the point of generation and under the control of the operator of the generating process. If maintenance staff are not that operator, the area does not qualify and the waste belonged in the 90-day area when generated.
Also: the rags are D001 if disposable and solvent-laden; reusable shop towels sent to an industrial laundry require an evaluation of the laundering exclusion. Evaluate secondary containment given the storm drain 20 feet from the door.
2. The supervisor proposes to label all three drums with today's date. Why is this wrong, and what should the dates actually reflect? What clock is now running?
Read the worked answer
Today's date would be a false record. The SAA date marks when accumulation of waste in that container began, not when someone noticed the problem or when the container is cleaned up. Using today's date to make the area look compliant is the kind of recordkeeping failure that turns a housekeeping finding into an enforcement exhibit.
What to do instead:
- Reconstruct honestly from parts-washer service logs, solvent purchase records, and pickup tickets. If the start date cannot be established, say so in writing and treat the material as aged out.
- Two different dates may be needed. Each container gets its accumulation-start date; the container that caused the area to exceed 55 gallons gets the date the limit was exceeded, because that is what starts the three-consecutive-day removal clock under 262.15(b).
- The clock that is running now is the three-day removal clock for the excess above 55 gallons. It is not paused by relabeling.
- Once material moves to the 90-day area, each container receives a new accumulation start date there and the 90-day clock begins (262.17(a)); the 180-day extension is available only to generators meeting the small-quantity and distance conditions.
The supervisor's 'whenever the 90-day guy comes' comment is itself a finding: it suggests the SAA is being used as long-term storage, which is exactly what the 55-gallon and three-day rules are designed to prevent.
3. How are the plastic tray, the absorbent used to wipe up the spilled solvent, and the empty rusted keg each managed? Explain the reasoning.
Read the worked answer
Tray and absorbents. These are debris from cleanup of a hazardous waste release. The solvent exhibits D001 ignitability, so the absorbed solvent, the contaminated pads, and the contaminated tray are themselves hazardous waste and must be containerized, labeled, dated, and manifested. The tray is only non-waste if it is decontaminated, and then the cleaning residue or rinse water becomes the waste stream. Don't let cleanup debris sit in an open bucket in the shop.
Rusted keg. Start with 40 CFR 261.7. A container that held a non-acute hazardous waste and has been emptied by pouring, scraping, and draining is not hazardous waste when discarded. Mineral spirits are non-acute, so if the keg is genuinely empty it can be managed as scrap metal-but the rust-through means it cannot be reused for waste, and it should go to scrap recycling promptly rather than sit against the wall collecting residue. If documentation of the contents is missing, or if it held an acute hazardous waste, the conservative path is to manage it as hazardous waste (acute-waste containers require triple rinsing).
The common thread: the generator, not the recycler or the drum reconditioner, owns the waste determination, and that determination must be documented.