Solid and Hazardous Waste Flashcards
7 cards from real CES practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Solid and Hazardous Waste flashcards as text
Which characteristic of ignitability is defined as a liquid with a flash point below what temperature?
Answer: 100°F (37.8°C)
Under RCRA, a liquid is ignitable (D001) if it has a flash point less than 60°C (140°F).
In a Risk-Based Corrective Action (RBCA) framework for contaminated sites, what is the primary basis for setting cleanup goals?
Answer: Acceptable risk to human health and the environment
RBCA sets site-specific cleanup goals based on acceptable risk levels (typically 10⁻⁶ cancer risk), site exposure pathways, and receptor populations.
What is the function of a leachate collection system in a modern sanitary landfill?
Answer: Capture and remove contaminated liquid that percolates through waste
A leachate collection system (LCS) captures liquid that passes through waste and collects it above the liner for treatment and disposal.
Which waste is categorized as a P-listed (acutely hazardous) waste under RCRA?
Answer: Discarded commercial chemical product warfarin at concentrations >0.3%
P-listed wastes are discarded commercial chemical products that are acutely hazardous; warfarin at >0.3% concentration (P001) is a classic example.
Underground storage tanks (USTs) containing petroleum are regulated under which RCRA subtitle?
Answer: Subtitle I
RCRA Subtitle I establishes the regulatory program for underground storage tanks (USTs), including release detection and corrective action requirements.
During a Superfund remedial investigation (RI), what is the primary objective?
Answer: Characterize the nature and extent of contamination and assess risk
The RI characterizes site contamination, defines exposure pathways, and supports the baseline risk assessment that informs remedy selection.
A waste exhibiting the reactivity characteristic (D003) is defined as one that is:
Answer: Normally unstable and reacts violently with water or generates toxic gases
Reactive wastes are unstable under normal conditions, react violently with water, generate toxic fumes, or are capable of detonation.