the Commonwealth.]
"Designer" means any architect, engineer or other person who
or which prepares a drawing for a construction or other project
which requires excavation or demolition work as herein defined.
"Emergency" means a sudden or unforeseen occurrence involving
a clear and immediate danger to life, property and the
environment, including, but not limited to, serious breaks or
defects in a facility owner's lines.
"Excavation work" means the use of powered equipment or
explosives in the movement of earth, rock or other material, and
includes, but is not limited to, anchoring, augering,
backfilling, blasting, boring, digging, ditching, drilling,
driving-in, grading, plowing-in, pulling-in, ripping, scraping,
trenching and tunneling, but does not include soft excavation
technology such as vacuum, high pressure air or water, tilling
of soil for agricultural purposes to a depth of less than
eighteen inches[, the direct operations necessary or incidental
to the purposes of finding or extracting natural resources,
political subdivisions performing minor routine maintenance up
to a depth of less than eighteen inches measured from the top of
the edge of the cartway or the top of the outer edge of an
improved shoulder, in addition to the performance of incidental
de minimis excavation associated with the routine maintenance
and the removal of sediment buildup, within the right-of-way of
public roads or employes of the Department of Transportation
performing within the scope of their employment work up to a
depth of twenty-four inches beneath the existing surface within
the right-of-way of a State highway], work performed by persons
whose activities must comply with the requirements of and
regulations promulgated under the act of May 31, 1945 (P.L.1198,
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