CAC Safety, Tools, and Equipment Flashcards

Before beginning excavation for a pond, what is the first safety step a contractor must complete in the US?

Answer: Call 811 to have underground utilities located and marked

Calling 811 before digging is a legal requirement in all US states and ensures underground utilities are marked to prevent dangerous strikes.

When operating a mini-excavator on a residential pond project, which personal protective equipment (PPE) is required at minimum?

Answer: Hard hat, high-visibility vest, and steel-toed boots

Hard hat, high-visibility vest, and steel-toed boots are the minimum PPE required when operating heavy equipment on a residential work site.

Which tool is most commonly used to compact the base material beneath a pond liner to prevent settling?

Answer: Plate compactor or jumping jack compactor

A plate compactor or jumping jack compactor is used to densify base material, preventing differential settling that could wrinkle or stress the liner.

What is the safest way to handle and cut EPDM rubber pond liner on a job site?

Answer: Use a sharp utility knife with a straightedge guide, wearing cut-resistant gloves

A sharp utility knife with a straightedge guide and cut-resistant gloves provides clean, controlled cuts while protecting the worker from blade slip injuries.

When using a water level tool to establish uniform pond edge elevations, the contractor is applying the principle of:

Answer: Communicating vessels — water seeks the same level in connected tubes

A water level works on the principle of communicating vessels, where water in connected tubes equalizes at the same height regardless of distance or bends.

Which safety precaution is most important when working with submersible pump electrical connections near water?

Answer: Ensure all connections are GFCI protected and rated for wet locations

All electrical connections near water must be GFCI protected and use wet-location rated components to prevent electrocution.