How far must spoil piles be kept from the edge of an excavation?
3 Feet
These are the three classifications of soil types
A, B, C
At what depth must the ground disturbance permit be completed?
6 inches
Trained and authorized operators
What must be present when operating equipment in an active roadway?
Flagger
What is a potential hazard associated with excavations?
Cave-in, falls, engulfment
What products are tested for when doing atmospheric monitoring in a trench?
Oxygen, CO, Flammables
At what depth is atmospheric testing required?
4 feet
What does the acronym ROPS stand for when referring to heavy equipment?
Rollover Protective Structures
Lack of vision
At what depth must ladders be installed in a trench?
4 Feet
This is the deciding factor of soil classification
Soil composition
What type of excavating must be performed around existing utilities?
Soft digging
How frequently should equipment be inpsected?
Daily or pre-use
If equipment is to be left running unattended, what position must the hydraulics be left?
Lowered and secured
At what distance must ladders be installed in a trench?
Every 25 feet
This soil type describes any previously disturbed soils
Type C
This person is responsible for completing the daily trench and excavation checklist
Competent person
What is the preferred separation distance between workers and heavy equipment operations?
16 feet
If equipment experiences a malfunction during operator or inspection, what must be performed?
Safe-off and tag out of service until repair.
At what depth must a trench be sloped or shored?
5 Feet
What is the maximum allowable slope for Type C soil?
1.5 to 1
What document must operators consult to identify existing utilities?
As built drawings
When must trenches be inspected?
Daily, after rain event, or change in conditions
Who is responsible for notifying the operator of hazards when working in tight conditions?
Signal Person or Spotter