Environmental effects of dredging. Field verification of the estuarine plant bioassay procedure. Technical notes
Technical Report
·
OSTI ID:111793
The FVP used contaminated sediment dredged from a project in Black Rock Harbor (BRH), Bridgeport, Conn. Use of a single highly contaminated dredged material afforded a unique opportunity to evaluate results of disposal under three different disposal alternatives: open water, intertidal (wetland), and upland. Upland and wetland sites were designed to meet surface area, elevation, and operational requirements for FVP contaminant mobility studies. Designs for sedimentation and storage followed recently developed Corps procedures, and the resulting site performance fulfilled design objectives. Provisions were made to ensure that essentially the same dredged material was placed in the open-water, upland, and wetland sites. The upland and wetland sites, constructed within protected areas using conventional construction techniques, were filled hydraulically from barges. The filling operation provided conditions typical of confined dredged material disposal operations. Following filling, the weirs at both sites were managed to allow free drainage of surface water as the fill stabilized through consolidation. Within approximately 9 months, the upland and wetland substrates had stabilized at the desired surface elevations.
- Research Organization:
- Army Engineer Waterways Experiment Station, Vicksburg, MS (United States). Environmental Lab.
- OSTI ID:
- 111793
- Report Number(s):
- AD-A--292620/2/XAB; WES-EEDP--03-3
- Country of Publication:
- United States
- Language:
- English
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