Remedial Investigations/Feasibility Studies

• Project manager of a petroleum hydrocarbon feasibility study for Texaco Environmental Services. Project encompasses site characterization and implementation of both soil and groundwater pilot investigations using Soil Vapor Extraction, bioremediation, and in situ groundwater sparging.


• Senior consultant to the City of Phoenix Attorney’s Office to provide oversight of Honeywell remedial efforts at the 34th St. Facility. Responsibilities included negotiation of remediation agreement, numerical modeling of bioremediation processes, and evaluation of remedial design.


• Program director of the Terminal Area Monitoring System at the Sky Harbor International Airport. Project included implementation of soil and soil vapor surveys, design and installation of groundwater/vapor monitoring wells, engineering design and construction supervision of an interception sparge curtain system to control the migration of liquid phase and dissolved phase petroleum hydrocarbon contamination.


• Managed the investigation of 3 landfills in Cairo, Egypt . Evaluated vertical and lateral extent of refuse, accessed hydrogeologic conditions, designed and installed vapor monitoring wells, and conducted field measurements of landfill gas production.


• Project manager of a soil remediation project at a bulk petroleum hydrocarbon facility for Equiva Services. Characterized, designed, constructed, and operated remedial system and obtained site closure in a 7 month time frame.


• Project manager for a multiple landfill investigation for the City of Tucson to evaluate volatile organic concentrations and methane distribution in the subsurface.


• Project manager of the Solvent Savers Superfund site in Linklaen, New York. Project involved preparation of Remedial Design Work Plan and implementation of large scale in situ and ex situ Soil Vapor Extraction technologies for chlorinated and aromatic hydrocarbons.


• Project manager for an RCRA closure for the Evergreen Air Center. Investigation included soil gas and soil sampling for volatile organic and heavy metals contamination due to aircraft stripping operations. Responsible for design and implementation of remediation. RCRA closure was successfully completed.


• Project manager for large scale site characterization at the former BASF facility in Anaheim, California. Project entailed soil gas sampling, soil sampling, installation of groundwater monitoring wells, and groundwater sampling and analysis. Evaluated the potential presence of heavy metals, volatile organics, semi volatile organics, and PCB's.


• Project manager for a Union Pacific Railroad project to design, construct, and implement a pilot study to evaluate the large scale feasibility of soil venting to enhance in situ biological remediation.


• Project manager of a Soil Vapor Extraction pilot test for Environmental Protection Agency at the Phoenix Goodyear Superfund site. Project included installation of extraction and vapor monitoring wells; design and construction of a Soil Vapor Extraction/carbon treatment facility; evaluation of carbon treatment efficiency; and determination of air permeabilities, capture zones, evaluation of circulation patterns and volatile organic compound recovery efficiencies.


• Project hydrogeologist for the Utah Power and Light hydrologic investigation in Kemmerer, Wyoming. Study included the evaluation of present and future impacts from fly ash tailing ponds, flue gas desulfurization ponds, and evaporation ponds on the local groundwater system. Approach entailed the use of environmental isotopes, geochemistry, and hydraulic testing to calibrate a two dimensional integrated finite difference model developed in house for predicting future impacts.


• Project hydrogeologist for FMC's trona plant site in Westvaco, Wyoming. Construction of three dimensional flow and solute transport model. Project included calibration of flow model using automatic parameter estimation inverse techniques developed in house, and simulation of solute transport from a number of brine ponds to predict impacts on a multiple aquifer system and local surface water.


• Project manager for the Jim Bridger hydrologic evaluation study for Pacific Power and Light Company in Point of Rocks, Wyoming. Project entailed an extensive field testing program, use of chemical species and environmental isotopes to evaluate extent of waste pond leakage, well hydraulic testing, artificial tracer tests, and seismic and resistivity geophysical surveys.


• Developer of a three dimensional solute transport model of flue gas desulfurization pond leakage to predict impacts to local groundwater resources. Development of an explicit pond model linked to the integrated finite difference solute transport model that allows prediction of pond filling history, head dependent pond leakage, chemical precipitation, viscosity dependent hydraulic conductivity, and chemical evolution of the waste pond.


• Supervised the hydraulic field testing program at the Waste Isolation Pilot Plant near Carlsbad, New Mexico. Responsibilities included design supervision of the implementation and interpretation of anisotropy, slug, pressure pulse, and aquifer tracer tests.


• Project manager for vapor extraction/bioremediation feasibility study of diesel contamination for Arizona Public Service. Project involved design and implementation of vapor monitoring program and design and installation of two air extraction/injection systems with carbon treatment.


• Project manager of a remedial investigation for a composite materials Fortune 500 firm in the San Francisco Bay area. Study involved the characterization of an 18 acre abandoned disposal site containing halogenated and aromatic hydrocarbons. Investigation included geological interpretations, geophysical logging, volatile and semi volatile organic soil sampling and analysis, and groundwater monitoring program design and implementation.


• Project manager for a chemical recycling center Superfund site in Seymour, Ohio. Project included feasibility study of a vadose zone air stripping remediation program. Performed numerical modeling of compressible gas flow in the unsaturated zone, constructed chemical model to predict mass transport rates of volatile organic compounds, and ran the Environmental Protection Agency ISCLT atmospheric dispersion model to estimate air emission concentration at the site boundary and hence 70 year lifetime cancer risk factors.