CPWM - Certified Professional in Waste Management Waste Characterization and Classification Questions and Answers — Questions and Answers
Question 1: A solid waste is determined to be a RCRA characteristic hazardous waste if it exhibits which of the following properties?
- Radioactivity, flammability, toxicity, or bioaccumulation
- Ignitability, corrosivity, reactivity, or toxicity (Correct answer)
- Solubility, mobility, persistence, or infectiousness
- Explosiveness, carcinogenicity, mutagenicity, or teratogenicity
Correct answer: Ignitability, corrosivity, reactivity, or toxicity
According to the EPA under the Resource Conservation and Recovery Act (RCRA), a solid waste is classified as a characteristic hazardous waste if it demonstrates at least one of four specific characteristics: ignitability, corrosivity, reactivity, or toxicity.
Question 2: A waste management facility receives a shipment of industrial sludge. A test reveals the sludge is an aqueous solution with a pH of 1.5. How should this waste be classified?
- As a non-hazardous solid waste
- As a reactive hazardous waste (D003)
- As a universal waste
- As a corrosive hazardous waste (D002) (Correct answer)
Correct answer: As a corrosive hazardous waste (D002)
The EPA defines corrosive hazardous wastes as aqueous wastes with a pH less than or equal to 2, or greater than or equal to 12.5. Since the sludge has a pH of 1.5, it meets the criteria for corrosivity and is assigned the EPA waste code D002.
Question 3: Which of the following is a primary goal of the EPA's Universal Waste Program?
- To increase the regulatory burden on small quantity generators
- To mandate the incineration of all listed hazardous wastes
- To encourage the collection and recycling of certain common hazardous wastes (Correct answer)
- To classify all industrial byproducts as non-hazardous
Correct answer: To encourage the collection and recycling of certain common hazardous wastes
The Universal Waste Program streamlines hazardous waste management standards for certain commonly generated hazardous wastes, like batteries and pesticides, to promote their collection and recycling and ease the regulatory burden on generators.
Question 4: When conducting a municipal solid waste (MSW) characterization study, the 'quartering' method is a technique used for what purpose?
- Calculating the bulk density of the entire waste load
- Separating organic from inorganic materials
- Obtaining a representative, smaller sample from a larger, mixed waste pile (Correct answer)
- Measuring the moisture content of the waste
Correct answer: Obtaining a representative, smaller sample from a larger, mixed waste pile
Quartering is a common sampling method in waste characterization where a larger pile of waste is thoroughly mixed, divided into four equal sections, and two diagonally opposite sections are discarded. The remaining two sections are remixed, and the process is repeated until a manageable, representative sample size is achieved.
Question 5: A manufacturing facility generates a waste stream that is not explicitly on an F, K, P, or U list. What is the generator's next critical step in the hazardous waste determination process?
- Assume the waste is non-hazardous and dispose of it in a municipal landfill
- Petition the EPA to have the waste added to a listed waste category
- Determine if the waste exhibits one of the four characteristics of hazardous waste (Correct answer)
- Mix the waste with a non-hazardous waste to dilute any potential hazard
Correct answer: Determine if the waste exhibits one of the four characteristics of hazardous waste
The hazardous waste determination process requires the generator to first check if the waste is a listed waste. If it is not, the generator must then determine if the waste exhibits any of the four hazardous characteristics: ignitability, corrosivity, reactivity, or toxicity.
Question 6: Which of the following materials is federally regulated and can be managed as a universal waste to ease regulatory burdens?
- Asbestos-containing building materials
- Spent lead-acid batteries (Correct answer)
- Regulated medical waste
- Polychlorinated biphenyls (PCBs)
Correct answer: Spent lead-acid batteries
The federal universal waste regulations (40 CFR part 273) identify specific categories of hazardous waste that can be managed under more streamlined rules. These categories include batteries, pesticides, mercury-containing equipment, lamps, and aerosol cans.
CPWM - Certified Professional in Waste Management Waste Characterization and Classification Questions and Answers
A solid waste is determined to be a RCRA characteristic hazardous waste if it exhibits which of the following properties?