Large Quantity Generator Accumulation and Incompatible Waste Storage
A commercial printing operation generates 1,800 kg per month of spent blanket-wash solvent classed as hazardous waste and 200 kg per month of spent fountain solution that is corrosive at pH 2. Drums are accumulated in a 20 m2 room that also holds 10 drums of 30% hydrogen peroxide solution. Most drums are labeled only "waste"; two are open; the oldest drum has no accumulation start date. The last off-site shipment was seven months ago. The site has no posted emergency coordinator, no contingency plan, and no employee training records. Total waste on site is about 3,200 kg. A sewer authority inspection found solvent odor in the room. The company has 45 employees and discharges to the city sewer.
1. Determine the site's hazardous waste generator status and the applicable accumulation time limit. Identify the major regulatory requirements that follow from that status.
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The site generates 1,800 kg/month plus 200 kg/month, or 2,000 kg/month. The large quantity generator (LQG) threshold is 1,000 kg/month, so the site is an LQG. The LQG accumulation time limit is 90 days. Seven months is roughly 210 days, far beyond the limit.
As an LQG, the site must label containers with the words "hazardous waste" and the accumulation start date, keep containers closed except when adding or removing waste, store incompatible wastes separately, maintain a contingency plan, designate an emergency coordinator, train personnel, and submit a biennial report. The site must also manage the waste before shipment and ensure the transporter and destination facility are authorized. The 3,200 kg on site reinforces that this is not a small satellite accumulation issue.
2. Identify at least five violations in the setup and prioritize them by risk. Explain the basis for your priority order.
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Violations include: open containers; missing accumulation start dates; labels that say only "waste"; incompatible storage of a strong oxidizer (hydrogen peroxide) with flammable solvents; accumulation beyond 90 days; no contingency plan; no emergency coordinator; no training records; and possible improper discharge to the sewer. The solvent odor suggests vapor release and poor container management.
Prioritize by immediate risk. First is the incompatible oxidizer/solvent storage and open containers because they create fire, explosion, and reaction hazards. Second is over-accumulation and quantity on site, which increases the fuel load and consequence. Third is labeling and closure, which are leading indicators of poor waste management. Fourth is emergency planning and training, which affect response if a fire occurs. Sewer discharge should be investigated in parallel because it can create a separate environmental violation and community risk.
3. Outline a corrective action plan with immediate, short-term, and long-term actions.
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Immediate actions: separate the hydrogen peroxide from solvents, close all open containers, label every container with "hazardous waste" and the accumulation start date, and stop adding waste to over-accumulated drums. Arrange an emergency shipment of the oldest waste. Confirm there is no sewer discharge and stop any improper draining.
Short-term actions: designate and post an emergency coordinator, write a contingency plan, train employees on container management and emergency response, and begin weekly inspections of the accumulation area with a checklist. Move to satellite accumulation containers at the point of generation, with the 55-gallon limit, and date them.
Long-term actions: set a shipment schedule that keeps accumulation under 60 days, segregate oxidizers and corrosives by compatible groups, install secondary containment, and track waste generation monthly. Verify the transporter and destination facility. Document the corrective actions and re-inspect after 30 days.