Direct comparison
VSQG vs SQG vs LQG Generator Categories
Compare VSQG, SQG, and LQG hazardous waste generator thresholds, accumulation limits, contingency plan and training rules under 40 CFR Part 262.
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How do VSQG, SQG, LQG compare side by side?
The table below compares VSQG, SQG, LQG across 9 procurement-relevant dimensions, from monthly threshold through core duty baseline.
Side-by-side comparison
| Dimension | VSQG | SQG | LQG |
|---|---|---|---|
| Monthly threshold | ≤100 kg/mo hazardous waste (≤1 kg/mo acutely hazardous) | >100 kg but <1,000 kg/mo | ≥1,000 kg/mo (or >1 kg/mo acutely hazardous/P-listed) |
| On-site accumulation cap | ≤1,000 kg accumulated on site at any time | No separate cap beyond the 180/270-day time limit | No separate quantity cap beyond the 90-day time limit |
| Accumulation time limit | None specified | 180 days (270 days if shipping over 200 miles) | 90 days; up to 30 additional days at EPA Regional Administrator discretion for unforeseen, temporary, uncontrollable circumstances |
| Written contingency plan | Not required | Not required — abbreviated emergency procedures instead | Required, full written plan under 40 CFR Part 262 Subpart M |
| Emergency coordinator | Not required | At least one designated employee available to respond | At least one designated employee available to respond |
| Personnel training | Not required | No formal federal training-hours requirement specified | Formal program completed within 6 months of hire/reassignment; annual review; no unsupervised work before completion |
| EPA renotification | Not on the SQG 4-year cycle | Renotify every 4 years via EPA Form 8700-12 / MyRCRAID (next federal deadline September 1, 2029) | Site ID renotification plus federal Biennial Report every even-numbered year |
| Federal biennial report | Not required | No federal requirement (some states require their own, often annual) | Required — EPA Form 8700-13 A/B, even-numbered calendar years |
| Core duty baseline | Identify all hazardous waste generated, stay under the limits, deliver only to an authorized handler | Same baseline plus the accumulation-time and emergency-coordinator duties above | Same baseline plus the full Subpart M / training / reporting regime above |
Common questions
Common questions about VSQG vs SQG vs LQG
Can a lab be VSQG one month and SQG or LQG the next?
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Yes. Generator status is determined month by month from the total hazardous waste generated in that calendar month, not an annual average, so a lab's category can shift with its experiment schedule -- track monthly totals rather than assuming last year's category still applies.
What happens if hazardous waste sits past the accumulation time limit?
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The generator is treated as operating an unpermitted treatment, storage, and disposal facility (TSDF) and becomes subject to the far more extensive permitting requirements of 40 CFR Parts 264-270 -- one of the most common and serious RCRA citations, usually caused by an untracked or unlabeled accumulation start date.
Does a VSQG have to do anything beyond the basic hazardous waste determination?
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Yes, though the list is short: identify all hazardous waste generated, never exceed the monthly generation or 1,000 kg on-site accumulation limits, and ensure waste goes only to a person or facility authorized to manage it. VSQGs are exempt from the contingency-plan, training, and reporting duties that apply to SQG and LQG.
