CAC CAC Safety, Tools, and Equipment 3

Question 1

Which OSHA regulation is most relevant to trenching and excavation safety during pond installation projects?

Accepted Answer

OSHA 1926 Subpart P — Excavations

Answer

OSHA 1910.147 — Lockout/Tagout

Answer

OSHA 1910.132 — Personal Protective Equipment

Answer

OSHA 1926.416 — Electrical Safety

Question 2

What is the purpose of using underlayment fabric beneath a pond liner?

Accepted Answer

It protects the liner from puncture by roots, rocks, and sharp soil particles

Answer

Underlayment acts as a secondary filtration layer

Answer

Underlayment improves pond water clarity

Answer

It prevents aquatic plants from rooting in pond sediment

Question 3

When a pond pump intake becomes clogged on a job site during commissioning, what is the safest first step?

Accepted Answer

Disconnect power to the pump before inspecting or clearing the intake

Answer

Reach into the water to clear the clog while the pump is running

Answer

Increase pump voltage to force through the clog

Answer

Add more water to the pond to dilute the debris

Question 4

What tool is most useful for measuring the exact flow rate of a waterfall or stream feature to verify pump sizing?

Accepted Answer

Five-gallon bucket and stopwatch timed fill test

Answer

Pressure gauge

Answer

Multimeter

Answer

pH meter

Question 5

Which safety signage or barrier is required when an open pond excavation must remain unattended overnight on a residential job site?

Accepted Answer

Temporary fencing or barriers around the excavation perimeter with hazard warning tape and lighting if near a public area

Answer

A single orange cone at the entrance

Answer

A handwritten note on the front door

Answer

No precautions are needed for private residential property

Question 6

What is the most important reason to flush new pond plumbing lines with water before connecting them to the biological filter?

Accepted Answer

To remove pipe debris, cutting oils, and solvent cement residue that could harm beneficial bacteria and fish

Answer

To check that fittings are watertight before final burial

Answer

To warm the pipes before adding fish to the pond

Answer

To increase water pressure in the return line