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Waste Characterization and Classification Flashcards

7 cards from real CPWM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Waste Characterization and Classification flashcards as text

  1. Which analytical method is most commonly used to determine total metals content in solid waste samples?

    Answer: SW-846 Method 6010 (ICP-OES)

    EPA SW-846 Method 6010 uses Inductively Coupled Plasma – Optical Emission Spectrometry to quantify total metals in solid and liquid waste matrices.

  2. Municipal solid waste (MSW) composition studies typically use which methodology to characterize waste streams by material category?

    Answer: Sort and weigh (waste sort) methodology

    Waste sort (sort and weigh) studies physically separate and weigh material categories such as paper, food, plastics, and metals to characterize MSW composition.

  3. Under DOT regulations, what document is required to accompany a hazardous waste shipment during transport?

    Answer: Uniform Hazardous Waste Manifest

    The Uniform Hazardous Waste Manifest (EPA Form 8700-22) must accompany every off-site shipment of RCRA hazardous waste from generation through final disposal.

  4. Which of the following wastes is specifically excluded from RCRA Subtitle C hazardous waste regulations?

    Answer: Household hazardous waste

    Household hazardous waste (HHW) is explicitly excluded from RCRA Subtitle C under 40 CFR 261.4(b)(1), even though it may contain hazardous materials.

  5. What is the key difference between 'solid waste' and 'hazardous waste' under RCRA?

    Answer: Hazardous waste is a subset of solid waste that meets listing or characteristic criteria

    RCRA defines 'solid waste' broadly (including liquids and gases) and hazardous waste is a subset of solid waste that either appears on EPA lists or exhibits ignitability, corrosivity, reactivity, or toxicity.

  6. Which waste classification system uses United Nations (UN) numbers to identify hazardous materials during transportation?

    Answer: DOT Hazardous Materials Regulations (49 CFR)

    The DOT Hazardous Materials Regulations (49 CFR Parts 171-180) require UN identification numbers on shipping papers and packages for hazardous materials in transport.

  7. A facility generates wastewater treatment sludge from electroplating operations. Under RCRA, this waste is most likely classified as:

    Answer: F006 listed hazardous waste

    Sludge from wastewater treatment of electroplating operations is listed as F006 (40 CFR 261.31) regardless of constituent concentrations.