520 CMR 14.00 Excavation & Trench Safety Regulations: An Introduction for Municipal Administrators. Commissioner Thomas G. Gatzunis, Department of Public Safety Commissioner Laura M. Marlin, Division of Occupational Safety. Background.
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520 CMR 14.00Excavation & Trench SafetyRegulations:An Introduction for Municipal Administrators
Commissioner Thomas G. Gatzunis, Department of Public Safety
Commissioner Laura M. Marlin, Division of Occupational Safety
made below the ground surface in excess of 3 feet below grade,
An excavation which is narrow in relation to its length,
the depth of which is greater than the width, but the width of the trench, as measured at the bottom is not greater than 15 feet.
For example, the construction of a house with a septic system will require both: a building permit for the foundation and a trench permit for the trench excavation for the septic system.
(See MGL c. 82A, §2)
*Exceptions exist for emergencies.
Barricade at least 6’ high
No spaces in fencing
Horizontal supports on the interior
Photo from trench, looking out.
BUT NOTE: Any suspension or revocation by the permitting authority must not be imposed in a manner that regulatesworker safety!
What the regulations do:
It is also critical to understand what the regulations do not require. The Trench Safety regs: