PC Environmental & Hazard Management 2

Question 1

Which federal agency regulates the disposal of hazardous waste generated during plumbing renovations?

Accepted Answer

EPA

Answer

The Environmental Protection Agency (EPA) regulates hazardous waste disposal under RCRA (Resource Conservation and Recovery Act).

Question 2

When working in a confined space with potential for toxic gas accumulation, what must be done before entry?

Accepted Answer

Test the atmosphere for oxygen, flammable, and toxic gases

Answer

OSHA requires atmospheric testing for oxygen levels, flammable gases, and toxic contaminants before any confined space entry.

Question 3

What is the primary concern when soldering copper pipes in an enclosed space without adequate ventilation?

Accepted Answer

Inhalation of flux fumes and lead vapors

Answer

Flux fumes and any lead-based solder vapors are toxic and can accumulate to dangerous levels in poorly ventilated spaces.

Question 4

Under the Safe Drinking Water Act, which type of solder is prohibited for use in potable water supply systems?

Accepted Answer

Solder containing more than 0.2% lead

Answer

The SDWA prohibits solder containing more than 0.2% lead in potable water systems to prevent lead contamination.

Question 5

A plumber discovers black mold growing behind a wall during a bathroom remodel. What is the correct first action?

Accepted Answer

Stop work and notify the property owner and supervisor

Answer

Work should be stopped and the discovery reported so proper mold remediation protocols and testing can be arranged by qualified professionals.

(PC) Plumber Certification Practice Test