Staff

Mr. Gerbac is our Director of Remote Monitoring Controls (RMC) for our OM&M division. He is responsible for developing our RMC technologies employed throughout the country. He is a Premier SCADA/MES Engineer who designs, develops, and integrates MES, SCADA, SPC, and various other application solutions. His industry experience includes landfill gas (LFG), manufacturing, building automation, food & beverage, and mining. He won the Inductive Automation Ignition Firebrand Award in September 2019.

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    • Mr. Gerbac is our Director of Remote Monitoring Controls (RMC) for our OM&M division. He is responsible for developing our RMC technologies employed throughout the country. He is a Premier SCADA/MES Engineer who designs, develops, and integrates MES, SCADA, SPC, and various other application solutions. His industry experience includes landfill gas (LFG), manufacturing, building automation, food & beverage, and mining. Taking a consultative approach to systems integration, he works with organizations to make sure business needs are fulfilled within a project and helps to identify opportunities for improvement. Mr. Gerbac takes customer satisfaction seriously and aims to always exceed expectations.

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Dan Gibbs is process engineer experienced in air separation, hydrogen liquefaction, and CO2 purification and liquefaction. He has conducted engineering, commissioning, startup, and operations at facilities in the United States, Canada, and Brazil. At SCS, Dan supports the design of renewable natural gas (RNG) facilities.

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    • Dan Gibbs is process engineer experienced in air separation, hydrogen liquefaction, and CO2 purification and liquefaction. He has conducted engineering, commissioning, startup, and operations at facilities in the United States, Canada, and Brazil. At SCS, Dan supports the design of renewable natural gas (RNG) facilities.
      Additional experience includes primary process engineering support for 10 multi-plant facilities across North and South America covering air separation, N2 pipeline, CO2 liquefaction, and H2 production and liquefaction. Responsibilities included coordinating operations, logistics, and engineering support teams to plan and execute plant outages; leadign evaluation for $60MM asset group to identify new business opportunities, improve operational strategy, and develop investment plan for 10-year life extension; identifying opportunities for and designed projects to recognize efficiency and production improvements. In one key project, adjusted process equipment to measure five percent efficiency improvement, providing a benefit of half a million dollars per year; and managing a team of six engineers through commissioning of a $4 million retrofit to a nitrogen liquefier.

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Mr. Girven is a Project Manager and an Ammonia Refrigeration Advisor for our Tracer Environmental division. He is very active in the Refrigerating Engineers and Technicians Association (RETA) and the International Institute of Ammonia Refrigeration (IIAR). He is experienced in Industrial Refrigeration Process Safety Management (PSM), Risk Management (RMP), and energy management. He conducts mechanical integrity inspections, process hazard analysis, and compliance audits, and he is a industrial refrigeration instructor.

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    • Mr. Girven is a Project Manager and an Ammonia Refrigeration Advisor for our Tracer Environmental division. He is very active in the Refrigerating Engineers and Technicians Association (RETA) and the International Institute of Ammonia Refrigeration (IIAR). He is experienced in Industrial Refrigeration Process Safety Management (PSM), Risk Management (RMP), and energy management. He conducts mechanical integrity inspections, process hazard analysis, and compliance audits, and he is a industrial refrigeration instructor.

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Albert Glenn, PE, has more than 20 years of professional engineering experience in solid waste, water, wastewater and civil/site work. His experience includes project management, planning, regulatory liaison, federal and state permitting, construction quality assurance (CQA) and quality control, new and closure landfill design, transfer station and convenience center design, development of construction packages, and construction administration for the solid waste industry

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    • Mr. Glenn has more than 20 years of professional engineering experience in solid waste, water, wastewater and civil/site work. His experience includes project management, planning, regulatory liaison, federal and state permitting, construction quality assurance (CQA) and quality control, new and closure landfill design, transfer station and convenience center design, development of construction packages, and construction administration for the solid waste industry

Mr. Gordon is a Project Manager for our OM&M Division’s Remote Monitoring and Control services.

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Mike Goudreau, PE, has over 30 years of consulting experience and has been with SCS for over 18 years. Mike has significant experience with solid waste and environmental remediation projects including municipal, rubble and industrial waste landfills, landfill closures, solid waste transfer stations, and public convenience/recycling centers.

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    • Mr. Goudreau has over 30 years of consulting experience and has been with SCS for over 18 years. Mike has significant experience with solid waste and environmental remediation projects including municipal, rubble and industrial waste landfills, landfill closures, solid waste transfer stations, and public convenience/recycling centers. In general, Mike’s project responsibilities have included multi-disciplined project management for site investigation and remediation, facility design, preparation of plans, studies, reports, specifications, contract documents, quantity and cost estimates, regulatory permit applications, shop drawing reviews, sampling and remediation work plans, and reports required for environmental and landfill permitting. Design expertise has included stormwater management and conveyance, grading, erosion and sediment control, landfill cell layout, fill sequencing, leachate management systems, and landfill closure.

Mr. Gould has nearly two decades of experience performing environmental and solid waste management projects. His experience includes Phase I and II Environmental Site Assessments (ESAs) of commercial and agricultural sites, remedial activities at hazardous and non-hazardous project sites, and landfill investigations.

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    • Mr. Gould has nearly two decades of experience performing environmental and solid waste management projects. His experience includes Phase I and II Environmental Site Assessments (ESAs) of commercial and agricultural sites, remedial activities at hazardous and non-hazardous project sites, and landfill investigations. This includes historical and regulatory research; collection of soil, groundwater, landfill gas, and suspect asbestos or lead-containing material samples; supervision of subcontractors; health and safety compliance; data management; interpretation of laboratory analytical results; remediation oversight; and technical report preparation.

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David Greene, PE, has a variety of solid waste related environmental engineering experience, including air permitting, landfill gas, financial analysis, landfill due diligence efforts, regulatory development and analysis, compliance planning, greenhouse gas monitoring, emission inventory including emission factor development, SPCC and SWPPP development. He has an MBA and is a Professional Engineer licensed in North Carolina and South Carolina.

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    • Mr. Greene has a variety of solid waste related environmental engineering experience, including air permitting, landfill gas, financial analysis, landfill due diligence efforts, regulatory development and analysis, compliance planning, greenhouse gas monitoring, emission inventory including emission factor development, SPCC and SWPPP development. He has an MBA and is a Professional Engineer licensed in North Carolina and South Carolina.
      Mr. Greene also consults internationally in Southeast Asia focusing on the areas of planning and implementing training and evaluating the feasibility of LFG energy projects at solid waste disposal sites.

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Mr. Grill is a Vice President and a Project Director with our Energy division. He is experienced with the design, construction, operation, and maintenance of Landfill Gas-to-Energy facilities, biogas treatment facilities, and power plants, and has conducted studies of digester gas methanization.

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    • Mr. Grill is a Vice President and a Project Director with our Energy division. He is experienced with the design, construction, operation, and maintenance of Landfill Gas-to-Energy facilities, biogas treatment facilities, and power plants and has conducted studies of digester gas methanization.

Ricky Guenther, PE, AHERA, has 15 years of experience as an engineer in environmental consulting. He has diverse experience in sediment, soil and groundwater investigation and remediation, ash impoundment cover and liner construction, storm water analysis, methane investigation and remediation, and brownfield redevelopment.

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    • Mr. Guenther has 15 years of experience as an engineer in environmental consulting. He has diverse experience in sediment, soil and groundwater investigation and remediation, ash impoundment cover and liner construction, storm water analysis, methane investigation and remediation, and brownfield redevelopment. His areas of expertise include site investigation, cost estimating, bidding and construction documents, and construction oversight and documentation. Rick has worked with private property owners and developers, electric utilities, and industrial facilities.

Mr. Guignon is a Senior Project Professional in our Southwest region.

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    • Mr. Guignon is a Senior Project Professional in our Southwest region.

Ms. Guilfoyle is an expert in the assessment and remediation of land recycling, the specialized practice of returning damaged sites and property to productive use. She has over two decades of environmental compliance experience in the southeastern United States and uses her experience to design practical solutions to be compliant with local, state, and federal environmental regulations and policies. Fieldwork experience includes the installation of monitoring wells using conventional and sonic rigs; direct push technology sampling; soil, sediment, and groundwater sampling; storage tank closures; spill bucket closures; Phase I/II ESAs; site assessments; remedial actions; NPDES Permits; SPCC Plans; TIER II; stormwater compliance; Industrial Wastewater Permit compliance; safety audits, and waste management.

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    • Ms. Guilfoyle is an expert in the assessment and remediation of land recycling, the specialized practice of returning damaged sites and property to productive use. She has two decades of environmental compliance experience in the southeastern United States and uses her experience to design practical solutions to be compliant with local, state, and federal environmental regulations and policies. Fieldwork experience includes the installation of monitoring wells using conventional and sonic rigs; direct push technology sampling; soil, sediment, and groundwater sampling; storage tank closures; spill bucket closures; Phase I/II ESAs; site assessments; remedial actions; NPDES Permits; SPCC Plans; TIER II; stormwater compliance; Industrial Wastewater Permit compliance; safety audits, and waste management.
      Ms. Guilfoyle has years of experience helping city and county governments prepare and submit EPA Brownfield Assessment and Cleanup Grants, including compliance reporting and due diligence. Her participation with FDEP Standard Operating Procedures, Florida Administrative Code, Petroleum Restoration Program procedures, Low Scored Site Initiative, and legislator and compliance agency events help keep projects on track and support plans for more sustainable development. She serves on the Seminole County Port Authority Board of Directors and is the former President of the Florida Association of Environmental Professionals, Central Florida Association of Environmental Professionals, and the Metropolitan Environmental Training Alliance.

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Dr. Juliette Gutierrez is our National GIS Coordinator. She has substantial experience with geographic information systems (GIS), database management, data warehousing, business intelligence, decision support, project management, systems analysis, design, software development and testing. She has an MBA with an emphasis on Information Management, and a PhD in Information Systems & Technology.

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    • As SCS’s National GIS Coordinator, Dr. Gutierrez is responsible for geographic information system (GIS) environments installation and management, which includes Portal for ArcGIS, ArcGIS Server, ArcGIS for Desktop, ArcSDE, ArcGIS Online, Field Maps, Survey123, and many layers, feature classes, map services, and images. She is tasked with the planning, organization, upgrade, and migration of GIS environments. Additional responsibilities include addressing daily issues and requests for GIS analysis, maps, and data; supporting project and proposal GIS work; writing Python scripts/Jupyter notebooks for automation; and writing SQL for reports and Excel/CSV data exports from the SQL Server. Prior to joining SCS in 2021, she managed the GIS/Database for the Orange County (California) Water District, using Oracle database applications.
      Dr. Gutierrez has over three decades of information technology experience, including substantial experience with GIS, database management, data warehousing, business intelligence, decision support, project management, systems analysis and design, and software development and testing. She also has considerable experience designing and developing data warehouses and data marts, and running relational databases on-premise and in the Amazon Web Services (AWS) cloud. Dr. Gutierrez has worked for several large organizations, including Yahoo Search Marketing, Washington Mutual Financial Services, Warner Music Group, Esri, and others as a developer and product engineer.

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Mr. Gutierrez is a Project Manager with our Operations, Maintenance, and Monitoring (OM&M) division.

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    • Mr. Gutierrez is a Project Manager with our Operations, Maintenance, and Monitoring (OM&M) division.

Dale Haase, PE, is a Project Manager. He prepares and submits air permit applications; waste water applications: NPDES, stormwater and SPCC plans; hazardous waste generator compliance plans; and all types of environmental compliance reporting for clients. He is particularly experienced at helping clients build sustainable health and safety cultures using training and positive behavior reinforcement with an emphasis on compliance and case management.

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    • Dale Haase, PE, is a Project Manager. He prepares and submits air permit applications; waste water applications: NPDES, stormwater and SPCC plans; hazardous waste generator compliance plans; and all types of environmental compliance reporting for clients. He is particularly experienced at helping clients build sustainable health and safety cultures using training and positive behavior reinforcement with an emphasis on compliance and case management.

Bill Haley is a Project Director based in Colorado. He is experienced in landfill engineering and design, including air compliance, landfill gas collection systems, and flare permitting and design.

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    • Bill Haley is a Project Director based in Colorado. He is experienced in landfill engineering and design, including air compliance, landfill gas collection systems, and flare permitting and design.

Ms. Hall is an environmental engineer with a decade of experience managing environmental due diligence projects, agricultural land development, and environmental permitting and compliance for national and regional retail clients. She has experience in conducting site assessments, including subsurface investigations, remedial design and implementation, operations and maintenance, and regulatory reporting. She has in-depth knowledge of data analysis, operating procedures, and environmental compliance.

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    • Ms. Hall is an environmental engineer with a decade of experience managing environmental due diligence projects, agricultural land development, and environmental permitting and compliance for national and regional retail clients. She has experience in conducting site assessments, including subsurface investigations, remedial design and implementation, operations and maintenance, and regulatory reporting. She has in-depth knowledge of data analysis, operating procedures, and environmental compliance.

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Jared Hamela, PG, is a Senior Project Professional in our Charlotte, NC, operations. He has ten years of experience conducting environmental and geotechnical subsurface investigations on projects for industrial, commercial, institutional, and government clients. His solid waste experience includes construction and certification as well as environmental compliance program management. His groundwater monitoring experience includes monitoring and contamination assessments at solid waste landfills, fossil fuel combustion facilities for power sector clients, State-Lead UST and chlorinated solvent sites, National Priority List (Superfund) sites, and due diligence environmental site assessments. His geotechnical experience includes subsurface investigations for a variety of applications He is a licensed Professional Geologist in North Carolina.

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    • Jared Hamela, PG, is a Senior Project Professional in our Charlotte, NC, operations. He has ten years of experience conducting environmental and geotechnical subsurface investigations on projects for industrial, commercial, institutional, and government clients. He is a licensed Professional Geologist in North Carolina.
      His solid waste experience includes construction and certification as well as environmental compliance program management.
      His groundwater monitoring experience includes monitoring and contamination assessments at solid waste landfills, fossil fuel combustion facilities for power sector clients, State-Lead UST and chlorinated solvent sites, National Priority List (Superfund) sites, and due diligence environmental site assessments. His geotechnical experience includes subsurface investigations for a variety of applications.
      Mr. Hamela is experienced in geologic environmental assessments, including, general field coordination, performing associated field work, assisting project management, technical report writing, interacting with clients, preparation of reports, and performing various investigative and research tasks on projects.

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Nathan Hamm
Nathan Hamm
Senior Vice President for Strategic Initiatives
Overland Park, KS
National Expert: Liquids Management
O. (913) 749-0705

Nathan Hamm, PE, is our Senior Vice President for Strategic Initiatives. He has over two decades of environmental engineering consulting experience and formerly led our Landfill Leachate and Industrial Wastewater Treatment initiative. Throughout his career he has worked on projects for a variety of industries including solid waste management, alternative energy, power generation, meat processing, and agricultural production. His core technical expertise is industrial wastewater and landfill leachate treatment, solid waste landfill design and construction, and civil site development. Mr. Hamm is a licensed professional engineer in Iowa, Kansas, Missouri, Montana, North Dakota, Oklahoma, and Texas.

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    • Mr. Hamm is our Senior Vice President for Strategic Initiatives. He has over two decades of environmental engineering consulting experience and formerly led our Landfill Leachate and Industrial Wastewater Treatment initiative. His core technical expertise is industrial wastewater and landfill leachate treatment, solid waste landfill design and construction, and civil site development. He is responsible for managing complex projects, maintaining client relationships, and providing technical guidance.
      Throughout his career he has worked on projects for a variety of industries including solid waste management, alternative energy, power generation, meat processing, and agricultural production. He has served in a variety of technical and management roles including project engineer, project manager, client manager, team leader, and office manager. He is adept at listening to client’s needs, understanding the underlying business and personal drivers, and developing solutions to their most challenging environmental problems.
      Contact Nathan at 913-749-0705 or

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Mr. Hammers has over five years of experience as an engineer in the environmental field. His areas of expertise include regulatory compliance, sustainable practices, and chemical management. He has an in-depth knowledge of Wisconsin, Minnesota, and federal regulatory programs, including the Clean Air Act, Clean Water Act, Oil Spills Prevention and Preparedness Regulations, and the Emergency Planning and Community Right-to-know Act (EPCRA).

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    • Mr. Hammers has over five years of experience as an engineer in the environmental field. His areas of expertise include regulatory compliance, sustainable practices, and chemical management. He has an in-depth knowledge of Wisconsin, Minnesota, and federal regulatory programs, including the Clean Air Act, Clean Water Act, Oil Spills Prevention and Preparedness Regulations, and the Emergency Planning and Community Right-to-know Act (EPCRA).

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Ms. Han is a Project Professional with over 5 years of experience on solid waste projects and field work at landfills. She has participated in the preparation of engineering designs, drawings, specifications, technical reports, and provided construction oversight. Her academic background encompasses a wide range of topics, including geotechnical engineering, water quality control, water chemistry and analysis, environmental geochemistry, air quality, regulatory compliance, hydrogeology and fluid mechanics, wastewater treatment design, and energy efficiency. Jessie has a Masters degree in Civil and Environmental Engineering from USC.

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    • Ms. Han is a Project Professional with over 5 years of experience on solid waste projects and field work at landfills. She has participated in the preparation of engineering designs, drawings, specifications, technical reports, and provided construction oversight. Her academic background encompasses a wide range of topics, including geotechnical engineering, water quality control, water chemistry and analysis, environmental geochemistry, air quality, regulatory compliance, hydrogeology and fluid mechanics, wastewater treatment design, and energy efficiency. Jessie has a Masters degree in Civil and Environmental Engineering from USC.

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Mr. Hansen is a Vice President of SCS Engineers and a Regional Manager for our OM&M division. He is experienced in the fields of computer technology and landfill gas management. He has managed landfill gas (LFG) projects throughout the southeast United States, including operations and maintenance of landfill gas collection and control systems (GCCS) for regulatory compliance (i.e., federal New Source Performance Standards (NSPS)), odor and LFG migration control, LFG energy, and greenhouse gas credits.

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    • Mr. Hansen is a Vice President of SCS Engineers and a Regional Manager for our OM&M division. He is experienced in the fields of computer technology and landfill gas management. He has managed landfill gas (LFG) projects throughout the southeast United States, including operations and maintenance of landfill gas collection and control systems (GCCS) for regulatory compliance (i.e., federal New Source Performance Standards (NSPS)), odor and LFG migration control, LFG energy, and greenhouse gas credits.
      Mr. Hansen’s services on these projects include system analysis, data review and reporting, planning and project management, LFG extraction wellfield balancing and adjustment, compressor facility operation and maintenance, blower/flare station adjustment and maintenance, troubleshooting, and repairs.

Patrick Harms, PG, is responsible for project management and coordination of routine and non-routine monitoring and investigations, primarily at open and closed solid waste management sites. He specializes in groundwater investigations, including coordinating groundwater monitoring activities, analyzing environmental data, preparing regulatory compliance reports, and communications with regional and local regulatory agencies. He prepares and implements work plans for subsurface investigations, including borings and well installations, trenching, and remedial excavations. He is skilled in environmental sampling, including groundwater, surface water, leachate, soil, and soil vapor. Mr. Harms holds an MS degree in Geology, with thesis research in isotope hydrology. He is a licensed Professional Geologist in California.

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    • Patrick Harms, PG, is responsible for project management and coordination of routine and non-routine monitoring and investigations, primarily at open and closed solid waste management sites. He specializes in groundwater investigations, including coordinating groundwater monitoring activities, analyzing environmental data, preparing regulatory compliance reports, and communications with regional and local regulatory agencies. He prepares and implements work plans for subsurface investigations, including borings and well installations, trenching, and remedial excavations. He is skilled in environmental sampling, including groundwater, surface water, leachate, soil, and soil vapor. Mr. Harms holds an MS degree in Geology, with thesis research in isotope hydrology. He is a licensed Professional Geologist in California.
      Mr. Harms is experienced in groundwater monitoring and sampling events at Leaking Underground Storage Tank (LUST) sites in Northern California. He has developed work plans and cost estimates for dual-phase extraction pilot studies and subsurface investigations; participated in remedial excavations and free product removal at contaminated facilities; interfaced with regulatory agencies and site owners; and completed soil vapor monitoring well installations at various industrial locations. His experience includes purging and sampling of monitoring wells, coordination with laboratories, ordering of field supplies and equipment rental, soil logging and soil sample collection, and related field activities.

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Mr. Harquail is experienced in the operations, maintenance, and monitoring of environmental control systems. He serves as the Northwest Operations Manager for SCS Field Services, the landfill construction, OM&M division of SCS Engineers. Mr. Harquail and his staff are providing OM&M services at 15 active and closed landfills in the Pacific Northwest. Their responsibilities range from routine monitoring and maintenance of landfill gas and groundwater systems, to the operation of flare and leachate evaporation systems.

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    • Mr. Harquail is experienced in the operations, maintenance, and monitoring of environmental control systems. He serves as the Northwest Operations Manager for SCS Field Services, the landfill construction, OM&M division of SCS Engineers. Mr. Harquail and his staff are providing OM&M services at 15 active and closed landfills in the Pacific Northwest. Their responsibilities range from routine monitoring and maintenance of landfill gas and groundwater systems, to the operation of flare and leachate evaporation systems.
      Mr. Harquail’s experience includes managing and executing environmental compliance, OM&M and remediation field activities. He has also provided oversight and management activities related to contaminated soil and groundwater, the installation and monitoring of groundwater and landfill gas wells, and the skilled management of environmental testing in a shoreline environment. Finally, he is also proficient in the execution and QA oversight of soil management plans at large construction projects, employee and client training in sampling and collection methods, and evaluation and maintenance of monitoring equipment, blowers, flares and ancillary equipment. From 1992 through 2008, his previous employment included EMCON, McKenna Environmental, Quality Technical Services, and Ecology and Environment.