ABC Regulatory Compliance and Safety Flashcards
6 cards from real ABC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ABC Regulatory Compliance and Safety flashcards as text
What is the required minimum free chlorine residual in a water distribution system under most US state regulations?
Answer: 0.2 mg/L
Most states require a minimum free chlorine residual of 0.2 mg/L at any point in the distribution system to prevent microbial regrowth.
What type of hazard is represented by confined spaces in water treatment facilities?
Answer: Permit-required confined space hazard
Tanks, vaults, and manholes at water facilities are typically permit-required confined spaces due to hazards like oxygen deficiency and toxic atmospheres.
Under the Lead and Copper Rule, action must be taken if lead levels exceed the action level at what percentage of tap samples?
Answer: 10%
If lead exceeds 15 ppb at more than 10% of tap water samples (90th percentile), the system must take action under the Lead and Copper Rule.
What is the primary purpose of the Consumer Confidence Report (CCR) that water systems must issue annually?
Answer: Inform customers about water quality and sources
The CCR is an annual water quality report that community water systems must deliver to customers, detailing source water and contaminant levels.
Which personal protective equipment is mandatory when handling gaseous chlorine at a water treatment plant?
Answer: Self-contained breathing apparatus (SCBA)
SCBA is required when working with or near gaseous chlorine because it is a toxic gas that can be fatal even at low concentrations.
Which federal rule establishes treatment technique requirements for Giardia and viruses in surface water systems?
Answer: Surface Water Treatment Rule
The Surface Water Treatment Rule requires filtration and disinfection for surface water systems to achieve specific log-removal credits for Giardia and viruses.