THOMAS C SHEAHAN
Engineering in Wellesley, MA
License number
Massachusetts 36716
Issued Date
May 29, 1992
Expiration Date
Jun 30, 2018
Type
Civil Engineer
Address
Address
Wellesley, MA 02482
Professional information
Method Of Containing And At Least Partially Remediating Contaminants In Soils, Including Sediments
US Patent:
7128498, Oct 31, 2006
Filed:
Aug 2, 2005
Appl. No.:
11/194641
Inventors:
Thomas Clair Sheahan - Wellesley MA, US
Akram N. Alshawabkeh - Franklin MA, US
Karen Sue Henry - Lyme NH, US
Akram N. Alshawabkeh - Franklin MA, US
Karen Sue Henry - Lyme NH, US
Assignee:
The United States of America as represented by the Secretary of the Army - Washington DC
International Classification:
B09B 1/00
US Classification:
40512875, 40512925
Abstract:
In one application for containing and remediating contaminants in sediments, employing a geocomposite eliminates the need for a thick cap or removal and subsequent ex situ treatment of the sediment. A geocomposite with at least one layer of reactive material is placed over the area to be remediated. A layer of available surcharge materials such as sand, gravel, or riprap covers the geocomposite. The weight of the surcharge materials causes pore water to flow from the sediment through the reactive layer or layers. Contaminants may be trapped in this reactive layer or layers. A top or bottom layer, or both a top and bottom layer, may be provided to inhibit incursion from outside the sediment layer, while permitting appropriate flow direction of pore water into the reactive layer or layers.
Reactive Geocomposite For Remediating Contaminated Sediments
US Patent:
2002015, Oct 17, 2002
Filed:
Apr 4, 2002
Appl. No.:
10/115088
Inventors:
Thomas Sheahan - Wellesley MA, US
Akram Alshawabkeh - Franklin MA, US
Karen Henry - Lyme NH, US
Akram Alshawabkeh - Franklin MA, US
Karen Henry - Lyme NH, US
International Classification:
D03D025/00, D03D015/00, B32B005/26, D04H001/08, D04H001/00, D04H003/00, D04H005/00, D04H013/00, B32B015/02
US Classification:
442/327000, 442/181000, 442/268000, 442/321000, 442/354000, 442/380000
Abstract:
In one application for remediating sediments, employing a geocomposite sheet eliminates the need for a thick cap or removal and subsequent ex situ treatment of the sediment. A geocomposite with at least one layer of reactive material is placed over the area to be remediated. A layer of available surcharge materials such as sand, gravel, or riprap covers the geocomposite. The weight of the surcharge materials causes pore water to flow from the sediment through the reactive layer or layers of the geocomposite. Contaminants may be trapped in this reactive layer or layers. A top or bottom layer, or both a top and bottom layer, may be provided to inhibit incursion from outside the sediment layer, while permitting appropriate flow direction of pore water into the reactive layer or layers.