5.3 Hazardous Waste Disposal & RCRA
Key Takeaways
- RCRA (Resource Conservation and Recovery Act) governs hazardous waste 'cradle to grave' and applies to many hazardous drugs through EPA's P-listed (acutely hazardous) and U-listed (toxic) chemical categories
- Trace chemotherapy waste -- empty vials, used syringes, gowns, and gloves with only residual HD contamination -- goes into yellow chemotherapy waste containers
- Bulk or RCRA-hazardous chemo waste -- unused/expired product and concentrated spill materials -- requires black RCRA-hazardous waste containers
- The 2019 EPA rule (40 CFR Part 266, Subpart P) prohibits healthcare facilities from flushing or sewering hazardous waste pharmaceuticals
- Facilities must comply with both federal RCRA rules and their specific state's hazardous-waste program, which can be more stringent than federal requirements
Hazardous Waste Disposal & RCRA
Once a hazardous drug (HD) is used, wasted, or its container is emptied, someone still has to dispose of it -- and disposal is governed by federal environmental law, not just USP <800>. The Facility Cleaning domain expects candidates to know how the Resource Conservation and Recovery Act (RCRA) interacts with pharmacy hazardous waste streams, and to correctly sort waste into the right container.
RCRA: The Federal Framework
RCRA is administered by the U.S. Environmental Protection Agency (EPA) and regulates hazardous waste "cradle to grave" -- from the moment it is generated through its final treatment, storage, or disposal. Many hazardous drugs, when discarded, meet the regulatory definition of RCRA hazardous waste because their active ingredients (or the commercial chemical products they came from) appear on EPA's hazardous waste lists.
P-Listed and U-Listed Pharmaceutical Waste
EPA's hazardous waste lists include two categories relevant to pharmacy:
- P-listed waste -- "acutely hazardous" commercial chemical products. Discarding even trace amounts of a P-listed chemical, or an empty container that held one, can trigger full hazardous-waste handling requirements. Warfarin at a concentration above 0.3% is a commonly cited P-listed pharmaceutical frequently referenced in RCRA pharmaceutical waste training.
- U-listed waste -- "toxic" commercial chemical products, which carry hazardous-waste requirements but with somewhat less stringent empty-container rules than P-listed chemicals.
A pharmacy that generates P-listed or U-listed waste must manage it under its RCRA generator category and route it to permitted hazardous-waste disposal -- it cannot go into regular trash or down a sink drain. EPA defines three generator categories based on the amount of hazardous waste produced per calendar month:
| Generator Category | Monthly Hazardous Waste Generated |
|---|---|
| Very Small Quantity Generator (VSQG) | Less than 100 kg (less than 1 kg of acutely hazardous waste) |
| Small Quantity Generator (SQG) | 100 kg to less than 1,000 kg |
| Large Quantity Generator (LQG) | 1,000 kg or more (or more than 1 kg of acutely hazardous waste) |
A facility's generator category can change month to month depending on volume generated, and the category determines requirements such as on-site accumulation time limits (for example, SQGs may generally accumulate hazardous waste on-site for up to 180 days, while LQGs are limited to 90 days) and whether a hazardous-waste manifest is required for off-site shipment. Most community and hospital pharmacies fall into the VSQG or SQG category, but the category -- not the pharmacy's size or reputation -- is what determines the applicable RCRA requirements.
The Sewering Ban
In 2019, EPA finalized the "Management Standards for Hazardous Waste Pharmaceuticals" rule (40 CFR Part 266, Subpart P), which specifically prohibits healthcare facilities from flushing or drain-disposing (sewering) hazardous waste pharmaceuticals -- including many hazardous drugs. This closed a long-standing loophole where cytotoxic and other hazardous pharmaceuticals were poured down sinks or flushed down toilets.
Trace vs. Bulk Chemotherapy Waste
Not every item that touched a hazardous drug is RCRA hazardous waste -- the key distinction is trace contamination versus bulk/RCRA-hazardous contamination:
| Waste Type | Description | Container |
|---|---|---|
| Trace chemotherapy waste | Empty vials, used syringes, gowns, gloves, and other items bearing only trace/residual HD contamination (no more than the amount that adheres after normal use) | Yellow chemotherapy waste container |
| Bulk/RCRA-hazardous chemo waste | Unused or expired HD product, spill cleanup materials, and any waste meeting the RCRA hazardous-waste definition (e.g., containing P-listed or U-listed chemicals above regulatory thresholds) | Black RCRA-hazardous waste container |
This trace-versus-bulk distinction is one of the most frequently tested facts in the domain: a technician must know that a spent, nearly-empty methotrexate vial with only surface residue is trace waste (yellow), while a full vial that must be discarded unused, or absorbent spill-cleanup material soaked with concentrated drug, is bulk RCRA-hazardous waste (black) -- because it still contains the listed chemical in more than a trace amount.
State Programs Layer on Top of Federal Rules
RCRA sets the federal floor, but individual states run their own EPA-authorized hazardous-waste programs, which can be more stringent than federal RCRA requirements. A facility must comply with both federal RCRA rules and its specific state's hazardous-waste program -- a practice that is compliant in one state is not automatically compliant in another. Exam questions may describe a scenario and expect you to recognize that "check federal RCRA rules only" is an incomplete answer; state hazardous-waste regulations must also be checked and followed.
Exam Scenario
A technician finishes preparing a dose of cyclophosphamide and is left with an empty vial, the used syringe, and her gloves and gown. Because these items carry only trace residue from normal preparation, they are trace chemotherapy waste and belong in the yellow chemotherapy waste container -- not the black RCRA-hazardous waste container, which is reserved for bulk/unused hazardous drug product and materials meeting the RCRA hazardous-waste definition in quantities beyond trace amounts. If instead a full vial had to be discarded unused because it was drawn up in error, that vial would be bulk waste requiring the black RCRA-hazardous container.
An empty vial, used syringe, gloves, and gown from a normal cyclophosphamide preparation -- bearing only residual/trace HD contamination -- should be discarded in:
A full, unused vial of a hazardous drug must be discarded because it was drawn up in error. Because it still contains the drug product in more than trace amounts, it should go into:
The 2019 EPA rule (40 CFR Part 266, Subpart P) specifically:
A hazardous drug disposal practice fully complies with federal RCRA requirements in one state. Is it guaranteed to be compliant everywhere?