Specification 02200 - Earthwork Page 2 of 3
January 2021 3066.21
B. _ Excavation shall be made to the elevations, grades, and dimensions shown on
the Drawings. Excavate sufficient material to provide suitable room for
construction providing bracing and support as required.
3.2. EXCAVATION IN WASTE
3.3
A.
CONTRACTOR shall take safety precautions during construction activities that
conform to all OSHA regulations and the safety requirements of OWNER and
the Specifications.
Trenches shall be excavated to the depths, widths, and alignments shown on
the Drawings.
CONTRACTOR shall separate cover soil from excavated waste to the extent
possible. Cover soil may be used to backfill trenches. Excavated material not
suitable for use as backfill shall be transported to the working face as directed
by OWNER.
Pockets of perched leachate may be encountered during waste excavation
activities. CONTRACTOR shall immediately notify OWNER and ENGINEER
when leachate is encountered. OWNER will provide CONTRACTOR with
written directions on how to manage the leachate in narrative and/or drawing
form. Potential leachate management techniques may include one or a
combination of the following.
1. Backfilling the affected area.
2. Realigning the trench.
3. Installing a French drain.
To the extent possible, the trench invert shall slope uniformly as indicated on
the Drawings.
CONTRACTOR shall not excavate more trench than can be backfilled in one day
after placement of the pipe. Excavations shall not be left open overnight.
CONTRACTOR shall provide odor control during construction activities. Odor
control measures shall be approved by OWNER prior to use.
BACKFILL
A.
Excavated material shall be placed in loose layers and compacted to the extent
possible with the goal of establishing a firm, even surface. The loose lift
thickness shall not exceed 12 inches.
SANBORN HEAD
