CHMM Storage 3 — Questions and Answers
Question 1: Under RCRA, which of the following is NOT a required element of a container storage area inspection for hazardous waste?
- Checking for leaks or deterioration
- Verifying labels are present and legible
- Conducting a weekly visual inspection
- Testing the chemical composition of waste in each container (Correct answer)
Correct answer: Testing the chemical composition of waste in each container
RCRA requires visual inspections of containers for leaks and label integrity but does not require chemical testing of waste in each container.
Question 2: Which federal regulation requires facilities with aboveground storage tanks (ASTs) above threshold quantities to have a Spill Prevention, Control, and Countermeasure (SPCC) Plan?
- 40 CFR Part 112 (Correct answer)
- 40 CFR Part 264
- 29 CFR 1910.106
- 49 CFR Part 173
Correct answer: 40 CFR Part 112
40 CFR Part 112 requires SPCC plans for facilities with oil storage above threshold quantities to prevent discharges to navigable waters.
Question 3: A container used to store ignitable hazardous waste must be kept closed at all times EXCEPT when:
- A supervisor is present in the storage area
- It is necessary to add or remove waste (Correct answer)
- The storage area has a sprinkler system
- The outside temperature is below 60°F
Correct answer: It is necessary to add or remove waste
Under 40 CFR 265.173, containers must remain closed except when waste is being added or removed.
Question 4: What is the minimum secondary containment capacity required for a single AST under EPA SPCC regulations?
- 50% of the tank's storage capacity
- 110% of the largest tank's capacity (Correct answer)
- 100% of all tanks' combined capacity
- The volume of the largest expected spill
Correct answer: 110% of the largest tank's capacity
EPA SPCC regulations require secondary containment sufficient to hold 110% of the largest single tank's capacity.
Question 5: Under 29 CFR 1910.106, flammable liquids stored in inside storage rooms must have floors that are either liquid-tight or equipped with:
- Non-slip coatings
- A raised sill or ramp at the door opening (Correct answer)
- Concrete construction only
- Automatic floor drain systems
Correct answer: A raised sill or ramp at the door opening
OSHA requires flammable liquid storage rooms to have liquid-tight floors or a raised sill/ramp to contain spills and prevent liquid from spreading.
Question 6: Pyrophoric materials must be stored under which conditions to prevent ignition?
- In a flammable storage cabinet with ventilation
- Under an inert atmosphere or in sealed containers away from air and moisture (Correct answer)
- In a refrigerated unit set below 40°F
- In a locked outdoor storage shed
Correct answer: Under an inert atmosphere or in sealed containers away from air and moisture
Pyrophoric materials ignite spontaneously on contact with air and must be stored under inert gas or in sealed, air-free containers.
Question 7: Which of the following best describes a 'Very Small Quantity Generator' (VSQG) under RCRA's 2016 Generator Improvements Rule?
- A generator that produces less than 100 kg of hazardous waste per month
- A generator that produces 100 kg or less of hazardous waste per calendar month and stores no more than 1,000 kg on-site (Correct answer)
- A generator that produces less than 1 kg of acute hazardous waste per month
- A generator exempt from all RCRA requirements
Correct answer: A generator that produces 100 kg or less of hazardous waste per calendar month and stores no more than 1,000 kg on-site
VSQGs generate 100 kg or less of hazardous waste and 1 kg or less of acute hazardous waste per month under 40 CFR 262.14.
CHMM Storage 3
Under RCRA, which of the following is NOT a required element of a container storage area inspection for hazardous waste?