NYC 9/11 Public Portal Document
B. MATERIAL CLASSIFICATION
1. For purposes of disposal only, excavated material shall be
classified as follews;
a. Recent fill (F-2) - Recent fill is primarily a fine
relatively uniform sized sand hydraulj.cally placed for the construction
of the Battery Park City landfill. Slight mixing or interbedding of the
sand and the underlying organics at their interface, provided that the
silt is not more than 10 percent of the wlume will be classified as
recent fill with the approval of the Foundation Engineer.
b. Miscellaneous unsuitable (F-1) Miscellaneous
unsuitable shall be wood, all inetal or timbers exceeding one cubic foot
in volume, and pieces cf rock or concrete exceeding two feet in maxim’.TO
dimension or four square feet, in area. Plastic and metal debris and
soil with more than 10% fines shall also be miscellanec;us unsuitable.
III. A. EXCAVATION - SOIL
1. Ml materials within the boundaries of the Work shall be
■ removed to the excavation subgrades indicated on the drawings.
2. Backfill, grade and conpa'Ct all areas and volumes
excavated beyond the limits shavn on tlae drawings with recent fill.
B. TEMPORARY SHEEl.’H'JG
1. The chan.ges in subgrade levels shall be supported by
suitable sheet piling or sheeting held in place by soldier 'oeams,
braces, shores or wales.
2. Timber and steel used for the sheetbrg system may be
either new or used, but must, in all cases, be sound, free from defects
and suitable for its intended use.
3. Tenporary' sheeting shall be maintained by the
Subcontractor until acceptence of. Vis Wbrk by the . Contractors
Representative.
C. DEWATERING
1. It shall be tlie rasponsibilii-.y of this Subcontractor to
control and maintain water levels iii the excavations so that all
excavation will be don in the dry. The water level .in the excavation
shall at all times be a mini.mum of 2 feet below the deepest excavation.
Softening of the bottcn will not be allowed. Subcontractor shall
maintain and operate the dewater syston until acceptance of the Work by
the Contractor.
D. BACKFILL
BPC-COMMERCIAL CENTER 02200-2
EARTHWORK
NYC-WTC_000165144
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