Groundwater Dewatering and Control in Sensitive Environments
Presented on Monday, April 29, 2013
Construction dewatering or water control are common terms used to describe removal or draining groundwater or surface water from a riverbed, construction site, caisson, or mine shaft by pumping or evaporation. This frequently involves the use of submersible dewatering pumps, centrifugal pumps, sump pumps, or application of vacuum to well points. When a dewatering site is located adjacent to environmentally or structurally sensitive features such as wetlands, surface water bodies, contaminated sites, or earthen dams, special considerations must be made in the design of a successful dewatering scheme. In addition, the long-term dewatering needs of such a site may be different given its proximity to the sensitive feature. This session showcases the innovative approaches practitioners have used to address groundwater dewatering near sensitive areas and lessons learned from successful applications.
Moderator:
Bill Fernandez, PE
Water Resources, CDM Smith, Walnut Creek, CA
Bill Fernandez is a water resources engineer with 12 years of experience in water resources system analysis and planning. He has extensive experience in performing modeling and analysis for simulation of groundwater flow and contaminant transport, optimization of water supply systems including supply wells, reservoirs, and raw water systems. Fernandez has developed a number of dewatering designs to address sensitive locations including dewatering in support of the excavation and construction of an earthen dam, dewatering next to sensitive wetlands, and dewatering control during pipeline construction in the vicinity of an active groundwater contaminant plume.
Mitigation of Groundwater Dewatering Impact on a Nearby Contaminant Plume During Pipeline Construction
MP3
Presentation
Slides
Bill Fernandez, PE
, Water Resources, CDM Smith, Walnut Creek, CA
John P. Nyznyk, PE, BCEE, LEEDAP
, Environmental Remediation, CDM Smith, Walnut Creek, CA
Robert P. Schreiber, PE, BCEE, D.WRE
, Water Resources, CDM Smith, Cambridge, MA
Groundwater Modeling to Assist in Designing a Dewatering System for the Protection of Egyptian Antiquities
MP3
Presentation
Slides
Buvana Ramaswamy, PG
, CDM Smith, Cambridge, MA
Robert Fitzgerald, PE
, CDM Smith, Cambridge, MA
Henning Moe
, CDM Smith, Galway, Ireland
Thomas Nichols, P.E.
, CDM Smith, Cairo, Egypt
