Stewart James Smith
Geologists in Tucson, AZ
License number
Utah 5336166-2250
Issued Date
Jun 12, 2003
Expiration Date
Mar 31, 2017
Category
Geologist
Type
Professional Geologist
Address
Address
Tucson, AZ
Professional information
Method And System For Estimating Gas Production By A Landfill Or Other Subsurface Source
US Patent:
6611760, Aug 26, 2003
Filed:
Dec 14, 2001
Appl. No.:
10/023054
Inventors:
Harold W. Bentley - Tucson AZ
Gary R. Walter - Tucson AZ
Stewart J. Smith - Tucson AZ
Jinshan Tang - Tucson AZ
Christian T. Williamson - Tucson AZ
Gary R. Walter - Tucson AZ
Stewart J. Smith - Tucson AZ
Jinshan Tang - Tucson AZ
Christian T. Williamson - Tucson AZ
Assignee:
Hydro Geo Chem, Inc. - Tucson AZ
International Classification:
G01N 714
US Classification:
702 2
Abstract:
A new and useful method and system for estimating LFG generation and gas permeability in a landfill or other subsurface-gas producing body of material is provided. The gas generation rate in a portion of a landfill or other subsurface-gas producing body of material is estimated by obtaining a time history record of atmospheric pressure that is representative of atmospheric pressure at a surface boundary of the portion of the landfill or the subsurface gas producing body of material, measuring the gas pressure at least at one selected location at the landfill (or subsurface body of material) site over a time period that is included in the time history record, and using the atmospheric pressure and the measured gas pressure over the time period to estimate LFG generation rate and gas permeability of the portion of the landfill or the subsurface gas producing body of material. In a preferred embodiment, gas pressure is measured at a plurality of selected locations within the refuse portion of a landfill, and in the case of an unlined landfill in the supporting soil below the landfill, and the measured pressures are used to estimate LFG generation rate and gas permeability of the landfill.