Latin American and Caribbean Consortium of Engineering Institutions

Conference Track:  Engineering & Public Service

Keywords:         dredging   capping  disposal   sizing   contaminant

Contact Title::    Dr.

Contact First Name: Paul

Contact Last Name:  Schroeder

University:       US Army Engineer Research & Development Center

Web:              www.wes.army.mil/el

Position:         Research Civil Engineer

Country:          USA

Email:            schroep@wes.army.mil

Fax:              601 634-3707

Paper Title: 

Cap Design of CAD Pits in San José Lagoon, San Juan, Puerto Rico 

Abstract: 

The USACE ERDC has prepared a capping design for disposal of dredged material from two projects in San Juan Bay Estuary, San Juan, PR.  Maintenance dredging is planned for the Federal Navigation Channel in San Juan Harbor.  Approximately 200,000 cubic yards in the Graving Dock turning basin and berthing areas failed bioassay testing for disposal in the San Juan Ocean Dredged Material Disposal Site (ODMDS).  These sediments are to be hydraulically dredged and placed in the largest of the San José Lagoon pits.  Plans are to cap the deposit with "clean" sediment that passed bioassay testing from the Cruise Ship Basin of the harbor.  In the other project, the Martín Peña Canal will be widen to improve flushing of San José Lagoon into San Juan Bay.  The eastern half of the canal is polluted and has restricted flow due to siltation and accumulation of trash and debris.  The resulting limited tidal exchange has contributed to poor water quality in the lagoon.  The channel will be mechanically dredged, resulting in approximately 750,000 cubic yards of sediment, upland fill, and debris.  The dredged material will be dumped by barge into three of the San José Lagoon pits and capped with clean sand.   

Consolidation, erosion, and contaminant transport modeling for both projects were done to determine site capacity for dredged material storage and cap design requirements for contaminant isolation.  Results determined that pit capacity would be sufficient to hold the entire volume of dredged material, while providing room for capping. 

Mailing Address: 

CEERD-EP-E

3909 Halls Ferry Road

Vicksburg, MS  39180-6199 

Phone: 

601 634-3709 

Other Authors:

Susan E. Bailey, baileys@wes.army.mil, USACE Engineer Research and Development Center

Paul R. Schroeder, schroep@wes.army.mil, USACE Engineer Research and Development Center (P)

Carlos E. Ruiz, ruizc@wes.army.mil, USACE Engineer Research and Development Center