Gaynor Dawson, P.E., BCEE
Senior Technical Advisor
B.S., Chemical Engineering, Stanford University, 1969
M.B.A. Business Policy, University of Washington, 1975
Licensed Professional Engineer – Chemical Engineering States of Washington and California
Board Certified Environmental Engineer, American Academy of Environmental Engineers
40-Hr Hazardous Waste and Operations (HAZWOPER) Occupational Safety and Health
Lean Six Sigma Green Belt
Mr. Dawson has over 46 years of environmental experience including risk assessments, site investigations, remedial investigation/feasibility study (RI/FS), remedial system design/implementation/operations , and performance-based contracting, water and wastewater treatment, and litigation support. Mr. Dawson has worked on many active remediation sites beginning in the 1970s at Love Canal the Life Sciences site in Hopewell, Virginia up to his current work at the Kansas Army Ammunition Plant. He is recognized as a groundwater expert having assisted the U.S. Environmental Protection Agency (EPA) in preparing guidance on the selection and use of groundwater and surface water models, have applied models to complex sites such as the Aerojet facility in Rancho Cordova, California and having commercialized remedial action technologies such as In-well stripping and enhanced reductive dechlorination. Mr. Dawson was a lead technical consultant in the development and implementation of performance-based contracting programs for environmental restoration at Army and Air Force sites. Those efforts are credited with having saved in excess of $1 billion and resulted in the award of coins of excellence by the two services. Mr. Dawson helped develop the Streamlined Approach For Environmental Restoration (SAFER) for the U. S. Department of Energy for whom he still serves on remedy review teams and was a contributor to the preparation of Ri/FS guidance for EPA and the Army Military Munitions Response Program (MMRP). Mr. Dawson has assisted in numerous environmental litigation matters for the U.S> Department of Justice, EPA, states, and private parties. He has been accepted as a technical expert in state and federal courts throughout the U.S. and has testified on matters such as the fate and transport of hazardous chemicals, the historic standards of practice for hazardous waste management, consistency with the National Contingency Plan, and the efficacy of proposed remedial actions.
Remedy Review Team, U.S. Department of Energy (1999-present)
Groundwater and remedial action expert on review team representing headquarters and charged with determining efficacy of proposed approach and identifying potential alternatives that would reduce costs and/or accelerate closure. Sites addressed in the effort have included Savannah River, Oak Ridge, Mound, Paducah, Pantex, Los Alamos, Hanford, Brookhaven, and Sandia facilities. In addition, Mr. Dawson has assisted the Department with the development of related guidance and support materials. In particular, he was instrumental if developing the Groundwater Restoration Strategy employed at contaminated properties and the Monitored Natural Attenuation Program.
Guaranteed Fixed-Price Remediation Program, U.S. Army Environmental Command (1999 -2010)
Served as manager of technical assistance services in the design and implementation of the guaranteed-fixed price remediation (GFPR) initiative for the Army Environmental Command. Initial efforts involved conduct of Principles of Environmental Restoration (PER) workshops to develop consensus scopes of work for procurement of GFPR contracts at Base Realignment and Closure (BRAC) and active facilities. Subsequently, the work was focused on identifying key performance risks, developing a risk management strategy for those risks, completing the procurement package and acting as an advisor to the source selection team. In some instances when risk reduction was selected as the management option, Mr. Dawson designed and implemented data collection efforts. In one instance, he developed a $15 K field investigation that reduced resulting bids by several million dollars. In other cases, he devised performance criteria that limited the risk being put on the contractor. Mr. Dawson was awarded an individual Coin of Excellence from the Army for his efforts.
Performance-Based Contracting Program Design and Implementation, U.S. Air Force Civil Engineering Center (2010–2014)
Senior technical expert on the Performance-Based Remediation (PBR) Team charged with designing and assisting in implementation of performance-based contracts for restoration of contaminated Air Force facilities. Responsibilities included review of ongoing contracted actions, selection of scopes of work, drafting performance work statements, assisting as consultant to selection panels, and review of deliverables from executed contracts. The team received two different Coins of Excellence and was instrumental in designing and installing a project management information system still in use.
Dry Cleaner Site Remediation, private company, Modesto, CA (2004-2014)
Project Manager and expert witness for the remediation of perchlorethylene (PCE) contamination of soil and groundwater beneath a dry cleaning facility. Work was performed on a time and materials not to exceed basis. While initial scope was to complete the remedial investigation and feasibility study, the team was able to remove over 99 percent of all contamination during the investigation within the budget. Soil vapor extraction (SVE) was used both to quantify the residual soil contamination and removed such that when the pilot SVE system was removed, the Regional Water Quality Control Board confirmed the source term was gone and no further action was required for the soil. Similarly, a pilot study of enhanced reductive dechlorination was applied to the groundwater beneath the facility and the facility was declared restored when the pilot work was concluded. A single well was left with contamination above drinking water limits in the downgradient area where access was denied by the present landowner. That well underwent a steady decline in PCE levels to 11 ppb by the first quarter of 2014 and regulatory authorities approved a marked r3eduction in monitoring frequency. In addition, Mr. Dawson’s expert testimony resulted in defense verdicts for the initial lawsuit and subsequent attempt for additional penalties.
Member of American Institute of Chemical Engineers (AIChE)
Water Environment Federation
Senior Technical Advisor
B.S., Chemical Engineering, Stanford University, 1969
M.B.A. Business Policy, University of Washington, 1975
Licensed Professional Engineer – Chemical Engineering States of Washington and California
Board Certified Environmental Engineer, American Academy of Environmental Engineers
40-Hr Hazardous Waste and Operations (HAZWOPER) Occupational Safety and Health
Lean Six Sigma Green Belt
Mr. Dawson has over 46 years of environmental experience including risk assessments, site investigations, remedial investigation/feasibility study (RI/FS), remedial system design/implementation/operations , and performance-based contracting, water and wastewater treatment, and litigation support. Mr. Dawson has worked on many active remediation sites beginning in the 1970s at Love Canal the Life Sciences site in Hopewell, Virginia up to his current work at the Kansas Army Ammunition Plant. He is recognized as a groundwater expert having assisted the U.S. Environmental Protection Agency (EPA) in preparing guidance on the selection and use of groundwater and surface water models, have applied models to complex sites such as the Aerojet facility in Rancho Cordova, California and having commercialized remedial action technologies such as In-well stripping and enhanced reductive dechlorination. Mr. Dawson was a lead technical consultant in the development and implementation of performance-based contracting programs for environmental restoration at Army and Air Force sites. Those efforts are credited with having saved in excess of $1 billion and resulted in the award of coins of excellence by the two services. Mr. Dawson helped develop the Streamlined Approach For Environmental Restoration (SAFER) for the U. S. Department of Energy for whom he still serves on remedy review teams and was a contributor to the preparation of Ri/FS guidance for EPA and the Army Military Munitions Response Program (MMRP). Mr. Dawson has assisted in numerous environmental litigation matters for the U.S> Department of Justice, EPA, states, and private parties. He has been accepted as a technical expert in state and federal courts throughout the U.S. and has testified on matters such as the fate and transport of hazardous chemicals, the historic standards of practice for hazardous waste management, consistency with the National Contingency Plan, and the efficacy of proposed remedial actions.
Remedy Review Team, U.S. Department of Energy (1999-present)
Groundwater and remedial action expert on review team representing headquarters and charged with determining efficacy of proposed approach and identifying potential alternatives that would reduce costs and/or accelerate closure. Sites addressed in the effort have included Savannah River, Oak Ridge, Mound, Paducah, Pantex, Los Alamos, Hanford, Brookhaven, and Sandia facilities. In addition, Mr. Dawson has assisted the Department with the development of related guidance and support materials. In particular, he was instrumental if developing the Groundwater Restoration Strategy employed at contaminated properties and the Monitored Natural Attenuation Program.
Guaranteed Fixed-Price Remediation Program, U.S. Army Environmental Command (1999 -2010)
Served as manager of technical assistance services in the design and implementation of the guaranteed-fixed price remediation (GFPR) initiative for the Army Environmental Command. Initial efforts involved conduct of Principles of Environmental Restoration (PER) workshops to develop consensus scopes of work for procurement of GFPR contracts at Base Realignment and Closure (BRAC) and active facilities. Subsequently, the work was focused on identifying key performance risks, developing a risk management strategy for those risks, completing the procurement package and acting as an advisor to the source selection team. In some instances when risk reduction was selected as the management option, Mr. Dawson designed and implemented data collection efforts. In one instance, he developed a $15 K field investigation that reduced resulting bids by several million dollars. In other cases, he devised performance criteria that limited the risk being put on the contractor. Mr. Dawson was awarded an individual Coin of Excellence from the Army for his efforts.
Performance-Based Contracting Program Design and Implementation, U.S. Air Force Civil Engineering Center (2010–2014)
Senior technical expert on the Performance-Based Remediation (PBR) Team charged with designing and assisting in implementation of performance-based contracts for restoration of contaminated Air Force facilities. Responsibilities included review of ongoing contracted actions, selection of scopes of work, drafting performance work statements, assisting as consultant to selection panels, and review of deliverables from executed contracts. The team received two different Coins of Excellence and was instrumental in designing and installing a project management information system still in use.
Dry Cleaner Site Remediation, private company, Modesto, CA (2004-2014)
Project Manager and expert witness for the remediation of perchlorethylene (PCE) contamination of soil and groundwater beneath a dry cleaning facility. Work was performed on a time and materials not to exceed basis. While initial scope was to complete the remedial investigation and feasibility study, the team was able to remove over 99 percent of all contamination during the investigation within the budget. Soil vapor extraction (SVE) was used both to quantify the residual soil contamination and removed such that when the pilot SVE system was removed, the Regional Water Quality Control Board confirmed the source term was gone and no further action was required for the soil. Similarly, a pilot study of enhanced reductive dechlorination was applied to the groundwater beneath the facility and the facility was declared restored when the pilot work was concluded. A single well was left with contamination above drinking water limits in the downgradient area where access was denied by the present landowner. That well underwent a steady decline in PCE levels to 11 ppb by the first quarter of 2014 and regulatory authorities approved a marked r3eduction in monitoring frequency. In addition, Mr. Dawson’s expert testimony resulted in defense verdicts for the initial lawsuit and subsequent attempt for additional penalties.
Member of American Institute of Chemical Engineers (AIChE)
Water Environment Federation
Grant Dawson, P.E.
President
B.S., Biological Systems Engineering, Washington State University, 2002
Licensed Professional Engineer – Environmental Engineering State of Washington
40-Hr Hazardous Waste and Operations (HAZWOPER) Occupational Safety and Health
Administration Training
8-Hr HAZWOPER Supervisor Training
40-Hr Surface/Underground MSHA Certification
CPR/First Aid certified
Niton Manufacturing Certified XRF Operator
RACER Cost Estimation Software Training/Certification
Mr. Dawson has over 20 years of environmental experience including risk assessments, site investigations, RI/FS, remedial system design/implementation/operations , and abandoned mine lands assessment and closure. Mr. Dawson has worked on many active remediation sites and performed services ranging from groundwater/soil sampling to operating a thermal desorption unit for contaminated soils. He has coauthored and implemented Health and Safety Plans (HASP) and Quality Assurance Procedure Plans (QAPPs) for both soil and groundwater sites in several western states, as well as served as either a Health and Safety Officer or Field Project Manager on these same sites. Mr. Dawson has worked on remediation sites under voluntary cleanup programs (VCP), Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), and the Resource Conservation and Recovery Act (RCRA). In addition to remediation experience, Mr. Dawson, has completed assessment of over 1600 Abandoned Mineral Land (AML) features and has performed hazard mitigation and site reclamation of over 400 features ranging from wildlife friendly closures to site reclamation and restoration. He has assisted in research, modeling, and cost estimating to support expert witness testimony for various environmental related litigation actions.
Groundwater Remediation Design and Implementation, The Boeing Company, Seattle, WA (2002-2015)
Field Operations Manager performing source area control and plume wide reduction of groundwater contaminants using Enhanced Reductive Dechlorination (ERD). The project has included conducting a pilot test to determine the efficacy of ERD, an Engineering Evaluation/Cost Analysis of treatment alternatives, monitoring, and system optimization for the site. With continued remedial optimization this project has seen +99.9% reductions in groundwater contaminants at the point of compliance and upgradient locations.
Feasibility Study and Site Cleanup, The Boeing Company, Seattle, WA (2007-2015)
Field Operations Manager for the design, construction and implementation of in situ Enhanced Reductive Dechlorination (ERD) at a chemical distribution company. The project is a large scale DNAPL site adjacent to the Duwamish Waterway and managed under the Department of Ecology. The project has included monitoring for both groundwater and soil vapor concentrations and optimization of ongoing remediation. Since ERD has been implemented performance data show +99% reductions in groundwater contaminants at downgradient monitoring locations. ERD applications were performed in conjunction with the design and
operation of a Soil Vapor Extraction (SVE) system to remove volatile compounds in the vadose zone.
Enhanced Reductive Dechlorination (ERD) Design and Application, Modesto Steam and Laundry, Modesto, CA (2003–2015)
Design team member/field team member for the design and implementation of in situ Enhanced Reductive Dechlorination (ERD) at a former dry cleaning facility. The project included negotiation with the local Regional Water Quality Control Board and was subject to ongoing litigation. After design and implantation and subsequent groundwater monitoring the project has achieved cleanup criteria in the targeted area. ERD applications were performed in conjunction with the design and operation of a Soil Vapor Extraction (SVE) system to remove volatile compounds in the vadose zone. The life cycle of the project has included design, construction/implementation, optimization, and monitoring for both groundwater and soil vapor concentrations.
Soil Vapor Extraction/In Situ Air Sparging, Confidential Client, Portland, OR (2002-2007)
Field team member and system operator for a Soil Vapor Extraction (SVE) and In Situ Air Sparging (IAS) system at a former fuel station located in Portland Oregon. The system was first operated utilizing a catalytic oxidizer to destroy fuel vapors, after extracted concentrations had fallen to levels inefficient to oxidize, vapors were run through in-line vapor phase granulated activated carbon. The system was constructed using horizontal drilling techniques to allow access to the plume that extended below a large arterial road in the industrial area of Portland. The system required routine operational inspections and monitoring of groundwater. Near the completion of the project a one-time in situ oxygen releasing compound (ORC) was performed to stimulate bioremediation of low levels of BTEX compounds.
ERD/SVE, The Boeing Company, Tukwila, WA (2009-2015)
Field Operations Manager of the supplemental investigation of two solvent plumes contained within sheetpiles near the Duwamish waterway. To date work performed has included baseline sampling of groundwater conditions, the installation and sampling of soil vapor points, the installation and injection of two ERD areas, performance monitoring, the construction and operation of two SVE systems; which have since been shut down and demobilized after monitoring data indicated the cleanup criteria for site soils was completed. The site is being performed with regulatory oversight from the EPA and the Model Toxic Control Act (MTCA).
Site Characterization and Removal Action for the Lufkin-Hytec Landfills, Littlerock, WA (2007-2012)
Site Investigator and Field Operations Manager during the completion of a PA/SI at the site, and an Interim Action in accordance with state regulations equivalent to an EE/CA. Based on the conditions encountered during the PA/SI (drums buried within the overburden and fill), the regulatory agency changed the objective and determined that a RI/FS was necessary. The scope of work completed on this project included all work plan/planning documents, site investigation, remedial design, permitting, removal action, site reclamation, and post-removal action monitoring. The investigation work plan prepared for the project was developed around a Data Quality Objectives (DQO) process to ensure that sufficient data were collected for each of the anticipated site decisions.
Preliminary Assessment/Site Investigation of Abandoned Mines, US Army (2005-2008)
Health and Safety Officer during the Preliminary Assessment/Site Investigation (PA/SI) and later closure of 243 mine features on a military installation in the Mojave Desert. Field teams utilized XRF portable technology to allow for real-time field decisions to determine if analytical sampling was required at specific sites. Performed two small scale removal actions where minor gasoline/diesel range organics were noticed to have been spilled. Additionally; several homestead sites mining operational sites were investigated. The field teams were able to streamline the investigation process and completed the project on-time and under budget allowing for additional work to be completed within the original budget.
Cost Estimation and Performance Work Statement Generation, US Army (2003-2006)
Cost estimator for several installations under the Performance Based Acquisition (PBA) program for the US Army. Mr. Dawson provided Independent Government Estimates (IGEs) using RACER software and professional experience for groups of sites at designated installations to provide a comparison for the technical review team responsible for selecting the contract award winner. Sites included a wide range of expected remedial actions, long-term monitoring programs, and regulatory compliance reporting. In addition to preparing an IGE; Performance Work Statements (PWS) were generated for inclusion in the bid packages supplied to potential vendors.
President
B.S., Biological Systems Engineering, Washington State University, 2002
Licensed Professional Engineer – Environmental Engineering State of Washington
40-Hr Hazardous Waste and Operations (HAZWOPER) Occupational Safety and Health
Administration Training
8-Hr HAZWOPER Supervisor Training
40-Hr Surface/Underground MSHA Certification
CPR/First Aid certified
Niton Manufacturing Certified XRF Operator
RACER Cost Estimation Software Training/Certification
Mr. Dawson has over 20 years of environmental experience including risk assessments, site investigations, RI/FS, remedial system design/implementation/operations , and abandoned mine lands assessment and closure. Mr. Dawson has worked on many active remediation sites and performed services ranging from groundwater/soil sampling to operating a thermal desorption unit for contaminated soils. He has coauthored and implemented Health and Safety Plans (HASP) and Quality Assurance Procedure Plans (QAPPs) for both soil and groundwater sites in several western states, as well as served as either a Health and Safety Officer or Field Project Manager on these same sites. Mr. Dawson has worked on remediation sites under voluntary cleanup programs (VCP), Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), and the Resource Conservation and Recovery Act (RCRA). In addition to remediation experience, Mr. Dawson, has completed assessment of over 1600 Abandoned Mineral Land (AML) features and has performed hazard mitigation and site reclamation of over 400 features ranging from wildlife friendly closures to site reclamation and restoration. He has assisted in research, modeling, and cost estimating to support expert witness testimony for various environmental related litigation actions.
Groundwater Remediation Design and Implementation, The Boeing Company, Seattle, WA (2002-2015)
Field Operations Manager performing source area control and plume wide reduction of groundwater contaminants using Enhanced Reductive Dechlorination (ERD). The project has included conducting a pilot test to determine the efficacy of ERD, an Engineering Evaluation/Cost Analysis of treatment alternatives, monitoring, and system optimization for the site. With continued remedial optimization this project has seen +99.9% reductions in groundwater contaminants at the point of compliance and upgradient locations.
Feasibility Study and Site Cleanup, The Boeing Company, Seattle, WA (2007-2015)
Field Operations Manager for the design, construction and implementation of in situ Enhanced Reductive Dechlorination (ERD) at a chemical distribution company. The project is a large scale DNAPL site adjacent to the Duwamish Waterway and managed under the Department of Ecology. The project has included monitoring for both groundwater and soil vapor concentrations and optimization of ongoing remediation. Since ERD has been implemented performance data show +99% reductions in groundwater contaminants at downgradient monitoring locations. ERD applications were performed in conjunction with the design and
operation of a Soil Vapor Extraction (SVE) system to remove volatile compounds in the vadose zone.
Enhanced Reductive Dechlorination (ERD) Design and Application, Modesto Steam and Laundry, Modesto, CA (2003–2015)
Design team member/field team member for the design and implementation of in situ Enhanced Reductive Dechlorination (ERD) at a former dry cleaning facility. The project included negotiation with the local Regional Water Quality Control Board and was subject to ongoing litigation. After design and implantation and subsequent groundwater monitoring the project has achieved cleanup criteria in the targeted area. ERD applications were performed in conjunction with the design and operation of a Soil Vapor Extraction (SVE) system to remove volatile compounds in the vadose zone. The life cycle of the project has included design, construction/implementation, optimization, and monitoring for both groundwater and soil vapor concentrations.
Soil Vapor Extraction/In Situ Air Sparging, Confidential Client, Portland, OR (2002-2007)
Field team member and system operator for a Soil Vapor Extraction (SVE) and In Situ Air Sparging (IAS) system at a former fuel station located in Portland Oregon. The system was first operated utilizing a catalytic oxidizer to destroy fuel vapors, after extracted concentrations had fallen to levels inefficient to oxidize, vapors were run through in-line vapor phase granulated activated carbon. The system was constructed using horizontal drilling techniques to allow access to the plume that extended below a large arterial road in the industrial area of Portland. The system required routine operational inspections and monitoring of groundwater. Near the completion of the project a one-time in situ oxygen releasing compound (ORC) was performed to stimulate bioremediation of low levels of BTEX compounds.
ERD/SVE, The Boeing Company, Tukwila, WA (2009-2015)
Field Operations Manager of the supplemental investigation of two solvent plumes contained within sheetpiles near the Duwamish waterway. To date work performed has included baseline sampling of groundwater conditions, the installation and sampling of soil vapor points, the installation and injection of two ERD areas, performance monitoring, the construction and operation of two SVE systems; which have since been shut down and demobilized after monitoring data indicated the cleanup criteria for site soils was completed. The site is being performed with regulatory oversight from the EPA and the Model Toxic Control Act (MTCA).
Site Characterization and Removal Action for the Lufkin-Hytec Landfills, Littlerock, WA (2007-2012)
Site Investigator and Field Operations Manager during the completion of a PA/SI at the site, and an Interim Action in accordance with state regulations equivalent to an EE/CA. Based on the conditions encountered during the PA/SI (drums buried within the overburden and fill), the regulatory agency changed the objective and determined that a RI/FS was necessary. The scope of work completed on this project included all work plan/planning documents, site investigation, remedial design, permitting, removal action, site reclamation, and post-removal action monitoring. The investigation work plan prepared for the project was developed around a Data Quality Objectives (DQO) process to ensure that sufficient data were collected for each of the anticipated site decisions.
Preliminary Assessment/Site Investigation of Abandoned Mines, US Army (2005-2008)
Health and Safety Officer during the Preliminary Assessment/Site Investigation (PA/SI) and later closure of 243 mine features on a military installation in the Mojave Desert. Field teams utilized XRF portable technology to allow for real-time field decisions to determine if analytical sampling was required at specific sites. Performed two small scale removal actions where minor gasoline/diesel range organics were noticed to have been spilled. Additionally; several homestead sites mining operational sites were investigated. The field teams were able to streamline the investigation process and completed the project on-time and under budget allowing for additional work to be completed within the original budget.
Cost Estimation and Performance Work Statement Generation, US Army (2003-2006)
Cost estimator for several installations under the Performance Based Acquisition (PBA) program for the US Army. Mr. Dawson provided Independent Government Estimates (IGEs) using RACER software and professional experience for groups of sites at designated installations to provide a comparison for the technical review team responsible for selecting the contract award winner. Sites included a wide range of expected remedial actions, long-term monitoring programs, and regulatory compliance reporting. In addition to preparing an IGE; Performance Work Statements (PWS) were generated for inclusion in the bid packages supplied to potential vendors.
Stan R. Peterson, Ph.D.
Senior Environmental Geochemist
Education
Ph.D., Soil Chemistry/Geochemistry, Utah State University, Logan, Utah 1982
M.S., Soil Chemistry/Geochemistry, Utah State University, Logan, Utah 1979
B.S., Chemistry, Brigham Young University, Provo, Utah 1977
Certifications
Certified Emergency Medical Technician (EMT), Certified January, 1998
Certified Professional Soil Scientist (CPSS), Certified January, 1991
Project Management Professional (PMP), October, 2009 - 2011
40-Hr Hazardous Waste and Operations (HAZWOPER) Occupational Safety and Health
PADI Certification, 2010
EXPERIENCE
Senior Geochemist consultant with over 30 years of experience in the environmental field. Career experience includes work as a Senior Research Geochemist on uranium mill tailings mining operations where he was selected as the United States representative to the International Atomic Energy Agency (I.A.E.A.) regarding management of uranium mill tailings. He has worked on for EPA, Tribes, and local communities regarding characterization and restoration of impacts that resulted from more than a century of mining in the Coeur d’Alene Mining District and impacts from smelters in the Puget Sound region.
Stan has evaluated the leaching and migration potential of selected contaminants (both radioactive and toxic elements) through soil sediments and other geologic materials for the DOE, DOD, EPA, and private clients. This evaluation included conducting laboratory experiments and field investigations to understand soil-water adsorption processes, precipitation/dissolution reactions, and the sequestration of trace contaminants. He has also been involved in the development and application of geochemical simulation tools and the remediation of contaminants in groundwater and soils. Stan served as a selected member of the 5-person Science Advisory Board (SAB) for Washington State and has taught courses on geochemistry and geochemical modeling/leaching for the National Groundwater Association (NGWA) and Environmental Education Enterprises (E3).
Leaching of Metals in Coeur d’Alene Mining District, Idaho Lead Investigator for the U.S. Environmental Protection Agency (EPA) Remedial Action Contract (RAC) on the bioavailability and leaching of metals in the Coeur d’Alene Mining District, Idaho. Dr. Peterson was the technical lead on a linked field and laboratory study to assess the effectiveness of sediment amendments to reduce the bioavailability of metal-contaminated sediments to waterfowl and to reduce metal (lead, cadmium, zinc, arsenic, etc.) leachability. An extensive evaluation of alternative amendments was conducted and the reagent with the highest probability of success was selected and applied to soil in the laboratory and the field. He developed a Work Plan for the implementation of field and laboratory studies and coordinated the application of solid and liquid amendments to field sites. He also went to the Patuxent Research Laboratory in Maryland to prepare soil/amendment mixtures for the duck-feeding portion of the study.
Studied Movement of Uranium Mill Tailings Leachates For the Nuclear Regulatory Commission (NRC) He managed multiple projects/tasks to investigate and evaluate the impacts and disposal options for of uranium mill tailings. The principal objective of this project was to apply experimental and simulation tools to assess the long-term environmental impact of leachate movement from uranium mill tailings waste disposal sites. An innovative approach was developed for this project. The approach permitted the prediction of contaminant concentrations in the solutions migrating from uranium mill tailings impoundments. Geochemical modeling was used to identify minerals that could be precipitating. Laboratory analyses were then conducted to confirm the precipitation of these minerals. In summary, the following processes were considered: advection, dissolution/precipitation of minerals and amorphous compounds, surface adsorption, soluble complex formation, and redox reactions.
Focused Feasibility Study for Asarco Smelter Dr. Peterson was the task lead responsible for preparing a Focused Feasibility Study for the ASARCO smelter that addressed high levels of arsenic contamination in soil. Arsenic concentrations approached 20 percent in localized areas and were significantly above background levels over an area of approximately 6 acres. Different remedial alternatives were proposed for the soils with the high and the low concentrations of arsenic.
Design of Passive and In-Situ Treatment of Mining Wastes As part of the feasibility study for the Coeur d’Alene Mining District of Idaho, he developed conceptual designs for passive and in-situ treatment systems to address metal leaching resulting from contaminated soils and groundwaters. The passive treatment systems included reactive barriers, treatment beds, and wetlands. In-situ immobilization involved the selection of reagents and conceptual design of systems for incorporating the reagents into dry and submerged soils to immobilize metals.
Release and Migration of Radionuclides Dr. Peterson was also involved in a project to determine the release and migration of radionuclides from solidified waste forms. He compiled thermochemical data for solid phases and aqueous species of Cs, Sb, Co, and Ce. The thermochemical data was added to the MINTEQ geochemical computer code so that the code could be used to identify attenuation mechanisms that affect the concentration of dissolved constituents.
Described Regional Geochemistry for Large Mining District Technical Lead for the RI and Principal Geochemist responsible for describing the regional geochemistry to predict and evaluate the metal fate in the Coeur d'Alene mining district. This area is the largest silver producer in the world and the largest lead and zinc producer in the United States. Contaminants of concern in the basin included lead, cadmium, zinc, arsenic, manganese, iron, mercury copper, silver, and antimony. He helped develop probability density functions to estimate metal concentrations, loads, changing metal concentrations with time, and discharges from each of the major tributaries to the Coeur d’Alene River and from the Coeur d’Alene River to Lake Coeur d’Alene. He also modeled the adsorption of metals to iron oxyhydroxides transported in the river system.
Senior Environmental Geochemist
Education
Ph.D., Soil Chemistry/Geochemistry, Utah State University, Logan, Utah 1982
M.S., Soil Chemistry/Geochemistry, Utah State University, Logan, Utah 1979
B.S., Chemistry, Brigham Young University, Provo, Utah 1977
Certifications
Certified Emergency Medical Technician (EMT), Certified January, 1998
Certified Professional Soil Scientist (CPSS), Certified January, 1991
Project Management Professional (PMP), October, 2009 - 2011
40-Hr Hazardous Waste and Operations (HAZWOPER) Occupational Safety and Health
PADI Certification, 2010
EXPERIENCE
Senior Geochemist consultant with over 30 years of experience in the environmental field. Career experience includes work as a Senior Research Geochemist on uranium mill tailings mining operations where he was selected as the United States representative to the International Atomic Energy Agency (I.A.E.A.) regarding management of uranium mill tailings. He has worked on for EPA, Tribes, and local communities regarding characterization and restoration of impacts that resulted from more than a century of mining in the Coeur d’Alene Mining District and impacts from smelters in the Puget Sound region.
Stan has evaluated the leaching and migration potential of selected contaminants (both radioactive and toxic elements) through soil sediments and other geologic materials for the DOE, DOD, EPA, and private clients. This evaluation included conducting laboratory experiments and field investigations to understand soil-water adsorption processes, precipitation/dissolution reactions, and the sequestration of trace contaminants. He has also been involved in the development and application of geochemical simulation tools and the remediation of contaminants in groundwater and soils. Stan served as a selected member of the 5-person Science Advisory Board (SAB) for Washington State and has taught courses on geochemistry and geochemical modeling/leaching for the National Groundwater Association (NGWA) and Environmental Education Enterprises (E3).
Leaching of Metals in Coeur d’Alene Mining District, Idaho Lead Investigator for the U.S. Environmental Protection Agency (EPA) Remedial Action Contract (RAC) on the bioavailability and leaching of metals in the Coeur d’Alene Mining District, Idaho. Dr. Peterson was the technical lead on a linked field and laboratory study to assess the effectiveness of sediment amendments to reduce the bioavailability of metal-contaminated sediments to waterfowl and to reduce metal (lead, cadmium, zinc, arsenic, etc.) leachability. An extensive evaluation of alternative amendments was conducted and the reagent with the highest probability of success was selected and applied to soil in the laboratory and the field. He developed a Work Plan for the implementation of field and laboratory studies and coordinated the application of solid and liquid amendments to field sites. He also went to the Patuxent Research Laboratory in Maryland to prepare soil/amendment mixtures for the duck-feeding portion of the study.
Studied Movement of Uranium Mill Tailings Leachates For the Nuclear Regulatory Commission (NRC) He managed multiple projects/tasks to investigate and evaluate the impacts and disposal options for of uranium mill tailings. The principal objective of this project was to apply experimental and simulation tools to assess the long-term environmental impact of leachate movement from uranium mill tailings waste disposal sites. An innovative approach was developed for this project. The approach permitted the prediction of contaminant concentrations in the solutions migrating from uranium mill tailings impoundments. Geochemical modeling was used to identify minerals that could be precipitating. Laboratory analyses were then conducted to confirm the precipitation of these minerals. In summary, the following processes were considered: advection, dissolution/precipitation of minerals and amorphous compounds, surface adsorption, soluble complex formation, and redox reactions.
Focused Feasibility Study for Asarco Smelter Dr. Peterson was the task lead responsible for preparing a Focused Feasibility Study for the ASARCO smelter that addressed high levels of arsenic contamination in soil. Arsenic concentrations approached 20 percent in localized areas and were significantly above background levels over an area of approximately 6 acres. Different remedial alternatives were proposed for the soils with the high and the low concentrations of arsenic.
Design of Passive and In-Situ Treatment of Mining Wastes As part of the feasibility study for the Coeur d’Alene Mining District of Idaho, he developed conceptual designs for passive and in-situ treatment systems to address metal leaching resulting from contaminated soils and groundwaters. The passive treatment systems included reactive barriers, treatment beds, and wetlands. In-situ immobilization involved the selection of reagents and conceptual design of systems for incorporating the reagents into dry and submerged soils to immobilize metals.
Release and Migration of Radionuclides Dr. Peterson was also involved in a project to determine the release and migration of radionuclides from solidified waste forms. He compiled thermochemical data for solid phases and aqueous species of Cs, Sb, Co, and Ce. The thermochemical data was added to the MINTEQ geochemical computer code so that the code could be used to identify attenuation mechanisms that affect the concentration of dissolved constituents.
Described Regional Geochemistry for Large Mining District Technical Lead for the RI and Principal Geochemist responsible for describing the regional geochemistry to predict and evaluate the metal fate in the Coeur d'Alene mining district. This area is the largest silver producer in the world and the largest lead and zinc producer in the United States. Contaminants of concern in the basin included lead, cadmium, zinc, arsenic, manganese, iron, mercury copper, silver, and antimony. He helped develop probability density functions to estimate metal concentrations, loads, changing metal concentrations with time, and discharges from each of the major tributaries to the Coeur d’Alene River and from the Coeur d’Alene River to Lake Coeur d’Alene. He also modeled the adsorption of metals to iron oxyhydroxides transported in the river system.
Jeff J. Dawson
Senior Project Scientist and CFO
B.S., General Agriculture, Washington State University, 1966
UST Site Assessor - Washington Department of Ecology
Construction Quality Management for Contractors - United States Army Corp of Engineers
40-Hr HAZWOPER Training-OSHA
8-Hr HAZWOPER Supervisor-OSHA
32-Hr surface and underground mine safety-MSHA
DOT Hazardous Materials Transportation
DOT Security Awareness Training
Mr. Dawson started Hurricane Industries, LLC in May 2010. He has 30 years of experience in diverse environmental fields and construction. Environmental experience includes hydrogeologic studies, map-related risk assessment work, site assessments, RI/FS, remediation, and abandoned mine lands assessment and closure. Construction experiences include design and build of small structures, lysimeters, containment cells, remediation systems, stream underbarriers, and wildlife-friendly mine closure grating systems; D & D projects; and construction quality control.
Experience in environmental related fields includes:
Remedial Investigations/Feasibility Studies (RI/FS)
Mr. Dawson was the Field operations manager and team leader for a project doing remedial investigations at eight Air Force Distant Early Warning (DEW) line radar installations along the Arctic coast in Alaska. He was also the Field Operations Manager for a project assessing over 240 abandoned mine sites in the Mojave Desert at Ft. Irwin. In addition, Mr. Dawson participated in RI/FS activities at multiple dry cleaner sites, heavy industrial sites, military sites and national park sites.
Environmental Sampling
Mr. Dawson was a team leader for sampling wells across the U. S. for the National Pesticide Survey. He was also a team leader for the Exxon Valdez oil spill beach contamination investigation in Alaska, which included sampling sediment from beaches over hundreds of miles of shoreline. He was the field operations manager and a team leader for project that collected hundreds of samples at eight Air Force DEW line radar installations along Arctic coast in Alaska. In addition, he has collected thousands of samples in a variety of sites across the country that included soil, sediment, sludge, groundwater, surface water, air, and neat liquid samples. Besides sampling, Mr. Dawson has performed many types of field analyses on the samples he collected. These included x-ray fluorescence, Hach kits, Freon extraction and infrared spectrometer, and bio assays.
Remediation Support Services
Mr. Dawson has constructed and installed remediation systems at numerous sites including Modesto Steam Laundry and Cleaners and Merit Truck Stop.
Reclamation Support Services
Mr. Dawson performed reclamation activities at numerous sites to include Fort Irwin Mine Closures, National Park service Mine Closures, United States Forest Service Mine Closures, and Lufkin-Hytec Landfill Removals. Reclamation activities included various types of mine closures at hundreds of mines (one mine in Glacier National Park), contouring of the ground surface, replanting trees and seeding grasses and shrubs, and rebuilding roads.
Conference paper Expedited Methods for Assessing and Mitigating Physical and Chemical Hazards at Abandoned Mine Sites,
National Association of Abandoned Mine Lands Program 28th Annual Conference, Sep 2006
Conference paper Fate of Liquid Filled Drums Buried in Permafrost and a Case Study of Remediation,
Second Annual ICF Kaiser Technical Conference, Jun 1996
Senior Project Scientist and CFO
B.S., General Agriculture, Washington State University, 1966
UST Site Assessor - Washington Department of Ecology
Construction Quality Management for Contractors - United States Army Corp of Engineers
40-Hr HAZWOPER Training-OSHA
8-Hr HAZWOPER Supervisor-OSHA
32-Hr surface and underground mine safety-MSHA
DOT Hazardous Materials Transportation
DOT Security Awareness Training
Mr. Dawson started Hurricane Industries, LLC in May 2010. He has 30 years of experience in diverse environmental fields and construction. Environmental experience includes hydrogeologic studies, map-related risk assessment work, site assessments, RI/FS, remediation, and abandoned mine lands assessment and closure. Construction experiences include design and build of small structures, lysimeters, containment cells, remediation systems, stream underbarriers, and wildlife-friendly mine closure grating systems; D & D projects; and construction quality control.
Experience in environmental related fields includes:
Remedial Investigations/Feasibility Studies (RI/FS)
Mr. Dawson was the Field operations manager and team leader for a project doing remedial investigations at eight Air Force Distant Early Warning (DEW) line radar installations along the Arctic coast in Alaska. He was also the Field Operations Manager for a project assessing over 240 abandoned mine sites in the Mojave Desert at Ft. Irwin. In addition, Mr. Dawson participated in RI/FS activities at multiple dry cleaner sites, heavy industrial sites, military sites and national park sites.
Environmental Sampling
Mr. Dawson was a team leader for sampling wells across the U. S. for the National Pesticide Survey. He was also a team leader for the Exxon Valdez oil spill beach contamination investigation in Alaska, which included sampling sediment from beaches over hundreds of miles of shoreline. He was the field operations manager and a team leader for project that collected hundreds of samples at eight Air Force DEW line radar installations along Arctic coast in Alaska. In addition, he has collected thousands of samples in a variety of sites across the country that included soil, sediment, sludge, groundwater, surface water, air, and neat liquid samples. Besides sampling, Mr. Dawson has performed many types of field analyses on the samples he collected. These included x-ray fluorescence, Hach kits, Freon extraction and infrared spectrometer, and bio assays.
Remediation Support Services
Mr. Dawson has constructed and installed remediation systems at numerous sites including Modesto Steam Laundry and Cleaners and Merit Truck Stop.
Reclamation Support Services
Mr. Dawson performed reclamation activities at numerous sites to include Fort Irwin Mine Closures, National Park service Mine Closures, United States Forest Service Mine Closures, and Lufkin-Hytec Landfill Removals. Reclamation activities included various types of mine closures at hundreds of mines (one mine in Glacier National Park), contouring of the ground surface, replanting trees and seeding grasses and shrubs, and rebuilding roads.
Conference paper Expedited Methods for Assessing and Mitigating Physical and Chemical Hazards at Abandoned Mine Sites,
National Association of Abandoned Mine Lands Program 28th Annual Conference, Sep 2006
Conference paper Fate of Liquid Filled Drums Buried in Permafrost and a Case Study of Remediation,
Second Annual ICF Kaiser Technical Conference, Jun 1996