CAR - Certified Automotive Recycler Fluid & Hazardous Waste Management Questions and Answers 1 — Questions and Answers
Question 1: An automotive recycling facility accumulates various fluids. Which of the following should NEVER be mixed with used oil intended for recycling?
- Synthetic engine oil
- Transmission fluid
- Antifreeze and gasoline (Correct answer)
- Hydraulic fluid
Correct answer: Antifreeze and gasoline
Mixing used oil with substances like antifreeze (ethylene glycol), gasoline, or solvents contaminates the oil, making it unsuitable for recycling and potentially classifying the entire mixture as hazardous waste, which is more costly and complex to dispose of. Other petroleum-based lubricants like synthetic oil, transmission fluid, and hydraulic fluid can typically be mixed with used engine oil.
Question 2: A technician is preparing to drain fluids from a newly acquired end-of-life vehicle. According to best management practices, what is the most critical first step to ensure environmental protection?
- Removing the tires to improve access to drain plugs.
- Draining all fluids into a single, large container to save time.
- Ensuring the vehicle is positioned over an impervious surface like a concrete pad. (Correct answer)
- Disconnecting the battery after all fluids have been drained.
Correct answer: Ensuring the vehicle is positioned over an impervious surface like a concrete pad.
To prevent soil and groundwater contamination, all dismantling and draining activities must be performed on an impervious surface, such as a sealed concrete pad, that can contain spills. Draining fluids on bare ground is a major source of pollution. While other steps are part of the process, preventing spills from reaching the environment is the foundational step.
Question 3: Which of the following hazardous components must be removed from a vehicle before it is crushed, baled, or shredded to comply with federal and state regulations?
- Plastic bumper covers
- Catalytic converters
- Mercury-containing switches
- All of the above (Correct answer)
Correct answer: All of the above
Regulations require the removal of several hazardous components before a vehicle hulk is processed. This includes mercury switches (found in convenience lighting and some ABS systems), lead-acid batteries, and refrigerants. Catalytic converters are also removed for their valuable metals. While plastic bumpers are recycled, they are not typically classified as hazardous waste in this context. Since batteries, refrigerants, and mercury switches must be removed, 'All of the above' is the most comprehensive answer reflecting standard depollution procedures.
Question 4: When storing used lead-acid batteries awaiting recycling, what is a key safety and handling requirement?
- Stacking them on wooden pallets to save space.
- Storing them upright on an acid-resistant, curbed surface. (Correct answer)
- Keeping them outdoors to ensure proper ventilation of fumes.
- Draining the battery acid into a separate container immediately upon removal.
Correct answer: Storing them upright on an acid-resistant, curbed surface.
Used lead-acid batteries must be stored upright to prevent acid leaks through the vent holes. They should be placed on a non-reactive, impermeable, and curbed surface to contain any potential leaks of corrosive sulfuric acid. Stacking batteries increases the risk of short circuits and case damage.
Question 5: An auto recycling facility has a total aboveground oil storage capacity of 1,500 gallons in various containers (55-gallons or larger). Due to the potential for a spill to reach a nearby storm drain, this facility is required to have a:
- Hazardous Waste Generator Permit
- Stormwater Pollution Prevention Plan (SWPPP)
- Spill Prevention, Control, and Countermeasure (SPCC) Plan (Correct answer)
- Clean Air Act Title V Permit
Correct answer: Spill Prevention, Control, and Countermeasure (SPCC) Plan
The EPA's Oil Pollution Prevention regulation requires facilities with a total aboveground oil storage capacity of more than 1,320 gallons and a reasonable expectation of a discharge reaching navigable waters to develop and implement a Spill Prevention, Control, and Countermeasure (SPCC) Plan.
Question 6: If windshield washer fluid, used antifreeze, and used oil are accidentally mixed in a single 55-gallon drum, how must the facility manage this mixture?
- It can be managed as used oil as long as oil is the primary component.
- The mixture can be filtered to separate the fluids for proper recycling.
- It must be assumed to be hazardous waste unless testing proves otherwise. (Correct answer)
- It can be sent to a standard municipal wastewater treatment plant.
Correct answer: It must be assumed to be hazardous waste unless testing proves otherwise.
When different types of automotive fluids are mixed, the resulting mixture must be treated as hazardous waste unless it is tested and documented to be non-hazardous. You cannot manage the mixture as used oil or used antifreeze because of the contamination from other substances like the methanol in washer fluid.
