Soil/Groundwater Vapor Contaminant Data Interpretation

• 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.


• Project Manager of a groundwater and soils remediation project at a Shell Oil Products Site. Scope of Work included direct free product removal, biosparging, vapor extraction, direct injection of an oxygen release compound slurry, and barrier trench design and construction.


• 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 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.


• Project manager of an emergency response to a phenol spill from a railroad accident near a surface municipal water supply in Philadelphia, Pennsylvania. Risk assessment included field data collection, review of toxicology, and two dimensional numerical modeling of saturated and unsaturated vertical infiltration coupled to a finite difference solute transport model to predict contaminant impacts on local surface water.


• Project manager for a halocarbon contamination investigation at an electronics manufacturing firm. Investigation involved the design and implementation of a site characterization plan involving installation and sampling of monitoring wells, vadose zone gas sampling, geophysical logging, hydraulic testing, and soil sampling to evaluate the extent and identify sources of halocarbon contamination.


• Project manager for HGC second tier ARCS contract for Environmental Protection Agency Region IX. Projects included soil gas sampling and analysis, groundwater and soil sampling, and remediation feasibility studies at various Superfund sites.