Hackensack River Shallow Water Capping

Location: Jersey City, NJ
Owner: Honeywell Corp
Completion Date: January 1, 2012
Categories: Construction, Environmental Dredging
Sediment Remedy Design Description:

Sediment capping was performed on the Hackensack River in shallow water.
The site is adjacent to a former Honeywell industrial complex that was in
operation for several decades. Prior to capping activities, Sevenson performed
environmental dredging of Chromium contaminated sediment.

Three courses of material; sand, filter stone, and armor rock were placed using
a Cat 5110 excavator and clam bucket working from a 290 foot carfloat.
Material placement, location, and thickness were verified using a combination
of cores and sample pans. A GPS positioning system and Hypack data
collection and processing software was utilized to confirm coverage of the
capped area.

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