Staff

Mr. Adams has more than 30 years of construction experience. He has worked extensively on projects involving construction and operation of landfill gas (LFG) and condensate/leachate control facilities throughout the United States.

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    • Mr. Adams has more than 30 years of construction experience. He has worked extensively on projects involving construction and operation of landfill gas (LFG) and condensate/leachate control facilities throughout the United States. Clients have included large public and private waste firms, gas developers, and municipalities.

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Samuel Adlington works as a staff engineer, construction quality assurance (CQA) monitor, and environmental sampler on a variety of projects.

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    • Samuel Adlington works as a staff engineer, construction quality assurance (CQA) monitor, and environmental sampler on a variety of projects. These projects include; industrial site assessments, stormwater monitoring, stormwater inventories, stormwater control systems, voluntary pollution clean-up (VCP sites), surveying, landfills (closed and active), industrial greenhouse gas (GHG) and Title V reporting, industrial emissions calculations and reporting, landfill gas collection system construction and management. These projects involves CQA of well installations (groundwater and gas collection), environmental permitting, environmental control systems, environmental data management, groundwater sampling, surface water sampling, air quality monitoring, and civil engineering. Mr. Adlington is the lead environmental sampler and field engineer for the SCS Engineers Bellevue, WA office’s portfolio of landfill, industrial, commercial, and stormwater projects.

Mr. Aliassar has 6 years of experience working in the landfill and landfill gas (LFG) industry. His most recent experience is the preparation of design reports for collection and treatment systems incorporating radius-of-influence calculations, condensate generation estimates, blower/line sizing, LFG treatment options (granular activated carbon [GAC], KMnO4, flare) and pretreatment processes (chiller, sulfur/siloxane removal). He has also addressed

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    • Mr. Aliassar has 6 years of experience working in the landfill and landfill gas (LFG) industry. His most recent experience is the preparation of design reports for collection and treatment systems incorporating radius-of-influence calculations, condensate generation estimates, blower/line sizing, LFG treatment options (granular activated carbon [GAC], KMnO4, flare) and pretreatment processes (chiller, sulfur/siloxane removal). He has also addressed gas migration issues (probe and surface emissions) through design and installation of vertical extraction wells, horizontal/trench collectors, and soil vapor extraction wells. He has used the US Environmental Protection Agency (US EPA) LandGEM and International Panel on Climate Change (IPCC) models for estimating generation of LFG and other constituents. He has also worked on the design and installation of subsurface mitigation systems for residential structures.
      His experience also includes a KY gas program that is used to model collection systems and analyze output reports to identify system deficiencies relating to LFG speeds, head losses, header/lateral pipe line sizes, and well density. Mr. Aliassar has been involved in the preparation of bid packages, specifications, and submittals, the review and response to Requests for Proposal (RFPs), and engineering cost estimates and quantity take-offs

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Ms. Tiffany Andrews joined SCS in 2009 and has been working in the environmental consulting and environmental education fields since 2001. Ms. Andrews’ experience as an environmental scientist and sampler covers a variety of projects sites, including industrial hazardous waste facilities, petroleum impacted sites, and landfills.

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    • Ms. Tiffany Andrews joined SCS in 2009 and has been working in the environmental consulting and environmental education fields since 2001. Ms. Andrews’ experience as an environmental scientist and sampler covers a variety of projects sites, including industrial hazardous waste facilities, petroleum impacted sites, and landfills. Her project experience includes soil and groundwater sampling using a variety of methods, including low-flow purge sampling, CQA for well installations and abandonments, remediation system installation and removal, remediation system operations and maintenance, site assessment, and tank cleaning and inspection. Ms. Andrews is the lead environmental sampler and field coordinator for the SCS Portland office’s portfolio of landfill and storm water environmental monitoring projects. She also performs Phase I environmental site assessments and analytical data management.

Mr. Armentrout is a Senior Project Professional and has been at SCS Engineers for approximately 5 years. He has been the Project Engineer for a variety of engineering projects involving Transfer Stations, Household Hazardous Wastes, Landfill design and LFG-to-energy.

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    • Mr. Armentrout is a Senior Project Professional and has been at SCS Engineers for approximately 5 years. He has been the Project Engineer for a variety of engineering projects involving Transfer Stations, Household Hazardous Wastes, Landfill design and LFG-to-energy. His particular expertise in civil design and land development has allowed him to successfully provide these services to a variety of design projects. Mr. Armentrout is also a SWANA accredited Technical Associate for the Managing Transfer Stations course.

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Mr. Arrington, a professional engineer and project manager has over 30 years of broad-based engineering experience in Texas. His experience includes over 20 years of solid waste planning, permitting, design and construction management.

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    • Mr. Arrington, a professional engineer and project manager has over 30 years of broad-based engineering experience in Texas. His experience includes over 20 years of solid waste planning, permitting, design and construction management. Mr. Arrington’s solid waste projects include citizen convenience centers, transfer stations, landfills, composting facilities and solid waste processing facilities. He also has significant experience in preparation of plans and specifications for citizen convenience centers and transfer stations, as well as landfill cell construction, drainage structures, roads utilities and waste processing and recycling facilities. Mr. Arrington has participated in the preparation of numerous solid waste plans in Texas and has supervised personnel involved in all areas of solid waste management from planning, site work and design to construction administration. Mr. Arrington also has extensive experience working with the TCEQ and USEPA on solid waste permitting projects.

Mr. Asante-Ansong is a Certified Environmental and Business Professional with several years of progressive experience in Project Management; ASTM Phase I & Phase II Environmental Site Assessments, Preliminary Assessment (PAR), Transaction Screens, Environmental Baseline Survey, groundwater, soil, lead and asbestos sampling/Surveys.

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    • Mr. Asante-Ansong is a Certified Environmental and Business Professional with several years of progressive experience in Project Management; ASTM Phase I & Phase II Environmental Site Assessments, Preliminary Assessment (PAR), Transaction Screens, Environmental Baseline Survey, groundwater, soil, lead and asbestos sampling/Surveys. His experience also includes NEPA due diligence and regulatory compliance; biological, cultural, and historical resource assessments, EAs & FONSIs, environmental compliance, planning and permitting, contaminated site investigation, characterization, emediation, and industrial hygiene. Mr. Asante-Ansong has work with environmental regulations (EPA, VDEQ, TCEQ, FERC, etc.).

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Mr. Ayster has two decades of environmental experience and provides SCS Field Services (SCS) with hands-on landfill gas (LFG) design, construction, operations, maintenance, and monitoring capabilities. He currently serves as the Western Region Operations and Maintenance (O&M) Manager for SCS, and is responsible for all SCS O&M projects in CA and AZ.

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    • Mr. Ayster has two decades of environmental experience and provides SCS Field Services (SCS) with hands-on landfill gas (LFG) design, construction, operations, maintenance, and monitoring capabilities. He currently serves as the Western Region Operations and Maintenance (O&M) Manager for SCS, and is responsible for all SCS O&M projects in CA and AZ.

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Mr. Baird is a professional engineer experienced in civil and environmental engineering. His project experience includes landfill design and permitting, environmental monitoring, landfill construction, and many other facets of environmental compliance. Mr. Baird also has experience with sanitary sewer design, leachate and storm water management, and numerous field activities.

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    • Mr. Baird is a professional engineer experienced in civil and environmental engineering. His project experience includes landfill design and permitting, environmental monitoring, landfill construction, and many other facets of environmental compliance. Mr. Baird also has experience with sanitary sewer design, leachate and storm water management, and numerous field activities.

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Mr. Barham is SCS Engineers’ General Counsel and Senior Vice President of Construction Services. He is a member of the Virginia and District of Columbia bars, and holds a degree in building construction. He has over 30 years of experience in construction and construction law.

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    • Mr. Barham is SCS Engineers’ General Counsel and Senior Vice President of Construction Services. He is a member of the Virginia and District of Columbia bars, and holds a degree in building construction. He has over 30 years of experience in construction and construction law.
      Mr. Barham provides SCS Field Services with expertise in construction management, including procurement, scheduling, budgeting, and estimating, as well as other contract formation and administration activities.
      Mr. Barham has directed several full service (design/build) projects and has been involved in numerous projects such as Landfill Gas (LFG) collection systems (blower/flare stations, extraction wells, horizontal collection trenches, header lines, and condensate collecting/containment systems); groundwater pump and treat systems (stripping towers, recharge galleries, groundwater wells, deep recharge wells, collection/distribution piping, and pump stations); bio-treatment facilities (containment areas, moisture/nutrient application, and soil mixing); underground storage tanks (excavation, testing, triple rinse, and restoration); soil vapor extraction systems (cat/ox treatment facilities, vapor extraction wells, collection header lines, and air make-up wells).
      Prior to joining SCS Field Services, Mr. Barham served as a construction manager for a major general contractor on large hospital and institutional building construction projects.

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Ms. Barnhart brings to SCS over 20 years of experience in the hydrogeological field. Her expertise is in soil and groundwater assessment, groundwater modeling, and site remediation including air sparging, soil vapor extraction, excavation and pumping, chemical injection treatment, dual phase extraction, passive absorption and aggressive fluid vapor recovery.

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    • Ms. Barnhart brings to SCS over 20 years of experience in the hydrogeological field. Her expertise is in soil and groundwater assessment, groundwater modeling, and site remediation including air sparging, soil vapor extraction, excavation and pumping, chemical injection treatment, dual phase extraction, passive absorption and aggressive fluid vapor recovery. Her technical responsibilities have included Phase I Environmental Site Assessments (ESAs); hydrogeological assessments of soil, groundwater and surface water; groundwater monitoring and review; fate and transport groundwater modeling; underground storage tank (UST) closures; remediation planning, implementation, and monitoring; site closeout; and landfill statistics applications.

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Mr. Barroso-Giachetti joined SCS Engineers in July 2016 as a Senior Project Manager. He is experienced in environmental assessment and remediation, due diligence, regulatory compliance, solid waste, EH&S, landfill redevelopment, and other practice areas, including solid waste permitting, UST assessment and closure, MRF management, recycling, and landfill gas system design and management.

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    • Mr. Barroso-Giachetti joined SCS Engineers in July 2016 as a Senior Project Manager. He has over 16 years of experience as an environmental engineer and consultant in Florida, California, and Central America serving as a Contract Manager, Client Manager, and Project Manager. Mr. Barroso-Giachetti is knowledgeable in various practice areas of environmental consulting, including real estate transaction and mergers and acquisitions (M&A) due diligence (Phase I and II Environmental Site Assessments, Facility Compliance Reviews), soil, air, and groundwater assessment and remediation, and solid waste facility/landfill redevelopment, including methane gas mitigation, permitting, and/or landfill closure. Mr. Barroso-Giachetti has managed and provided technical leadership on a variety of site assessment and remediation projects involving sites impacted with petroleum hydrocarbons and/or chlorinated solvents. Mr. Barroso-Giachetti has lead various assessment, remediation, and closure efforts related to arsenic-impacted residential and commercial/industrial sites throughout South Florida.

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Ms. Barrow has 5 years of experience as an environmental professional specializing in the environmental assessment of properties. Her experience includes Phase I Environmental Site Assessments (ESAs) and subsurface investigations assessing constituents of concerns in property transactions for investors, developers, redevelopment agencies, and cities.

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    • Ms. Barrow has 5 years of experience as an environmental professional specializing in the environmental assessment of properties. Her experience includes Phase I Environmental Site Assessments (ESAs) and subsurface investigations assessing constituents of concerns in property transactions for investors, developers, redevelopment agencies, and cities. She performs Health Risk Assessments (HRAs) and groundwater monitoring and reporting (low-flow and traditional purging), and has participated in groundwater remediation projects using in situ chemical oxidation and high-vacuum, dual-phase extraction. After a thorough analysis of data, she prepares technical documents that accurately describe environmental conditions and conform to regulatory agency guidelines. She has written HRAs, groundwater monitoring reports, and Corrective Action Plans (CAPs) for many regulatory-driven projects.

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Mr. Bass is a Project Manager with 15 years of experience in the operation, maintenance, and monitoring of landfill gas (LFG), leachate, and groundwater treatment systems. His experience includes operating and maintaining LFG environmental control systems to meet Bay Area and Central Valley APCD, Title V, and state regulations and requirements.

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    • Mr. Bass is a Project Manager with 15 years of experience in the operation, maintenance, and monitoring of landfill gas (LFG), leachate, and groundwater treatment systems. His experience includes operating and maintaining LFG environmental control systems to meet Bay Area and Central Valley APCD, Title V, and state regulations and requirements. He has also been involved in the implementation of necessary routine and non-routine repairs and maintenance required to keep systems operational and in compliance with various prescribed operating parameters and goals. He has performed, supervised, and/or assisted in required maintenance and repairs, and has interacted and/or managed subcontractors and vendors needed to assist with maintenance of the systems. He is also responsible for preparing monthly reports, invoicing, recording field observations, and recommending repairs or other system modifications.

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Mr. Bauer has nearly 3 decades of experience conducting environmental site assessments, subsurface investigations, groundwater monitoring programs, soil and groundwater remediation, and geotechnical investigations at industrial hazardous waste and solid waste facilities.

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    • Mr. Bauer has nearly 3 decades of experience conducting environmental site assessments, subsurface investigations, groundwater monitoring programs, soil and groundwater remediation, and geotechnical investigations at industrial hazardous waste and solid waste facilities. His responsibilities include supervision, planning, and conducting of numerous Phase I and Phase II environmental site assessments (ESAs) and underground storage tank (UST) removals. Mr. Bauer has planned and directed the characterization and remediation of several large projects involving soil and groundwater contamination. He also directed several hydrogeologic characterizations, including collection of soil and groundwater samples and interpretation of aquifer tests. He has prepared several Remedial Investigation/Feasibility Study (RI/FS) reports, and prepared, designed, and implemented treatability studies, Remedial Action Plans (RAPs), and groundwater monitoring programs. He has been directly responsible for the preparation of several Aquifer Protection Permits (APPs) for wastewater treatment plants and solid waste disposal facilities. Mr. Bauer’s duties included senior technical review of documents, as well as negotiation and coordination with the Arizona Department of Environmental Quality (ADEQ) to obtain favorable permit conditions.

Mr. Bearden has over 20 years of experience as an environmental professional responsible for regulatory, environmental, and safety programs in the solid and hazardous waste industries, holding positions as regional manager and site manager. He serves as a primary liaison to regulatory agencies, assesses applicable regulations, obtains complex permits, and manages Environmental, Health, and Safety (EHS) compliance requirements.

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    • Mr. Bearden has over 20 years of experience as an environmental professional responsible for regulatory, environmental, and safety programs in the solid and hazardous waste industries, holding positions as regional manager and site manager. He serves as a primary liaison to regulatory agencies, assesses applicable regulations, obtains complex permits, and manages Environmental, Health, and Safety (EHS) compliance requirements. He develops and tracks project costs, develops and provides environmental compliance training for contractors and site personnel, manages personnel, and develops compliance schedules and final reports. He has been responsible for developing, revising, and implementing environmental management systems, contingency/incident command, Stormwater Pollution Prevention (SWPP) and Spill Prevention and Counter measures Control (SPCC), hazardous waste, facility business plans, plant security, Superfund Amendments and Re-authorization Act (SARA), chemical hygiene, OSHA programs, procedures for corrective action, and tracking and reporting on environmental and safety performance metrics. He is experienced in design, construction, and O&M of waste/chemical storage, treatment, and disposal control systems. He is a highly motivated, hands-on, and results-oriented environmental engineering services professional, and has exceptional planning, leadership, organizational, and communication abilities and an extensive background in highly regulated industries. Mr. Bearden has a working Spanish vocabulary and approved Drug Enforcement Agency (DEA) and Department of Justice (DOJ) background character

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Mr. Beben is a professional environmental engineer and project manger with nine years of experience with waste management in Jacksonville. He has worked at dozens of privately and publicly owned landfills throughout the country including Florida, South Carolina, North Carolina, Georgia, Alabama, and Alaska.

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    • David Beben is a professional environmental engineer and project manger with nine years of experience with waste management in Jacksonville. He has worked at dozens of privately and publicly owned landfills throughout the country including Florida, South Carolina, North Carolina, Georgia, Alabama, and Alaska. David has experience in landfill expansion and closure construction management, collection and secondary use systems for landfill leachate, solid waste permitting, drainage design and permitting, water quality monitoring, greenhouse gas management reporting, SWPPP’s/NPDES, SPCC Plans, financial assurance responsibility compliance with Section 62-701.630, FAC and GASB18.

Ms. Beck is a Project Manager at SCS Tracer Environmental where she is responsible for a variety of land use planning and regulatory compliance projects.

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    • Ms. Beck is a Project Manager at SCS Tracer Environmental where she is responsible for a variety of land use planning and regulatory compliance projects. Ms. Beck has over 5 years of experience in land use planning and regulatory compliance

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Ms. Bethke is a Senior Project Professional providing support for projects performed out of the SCS’s Medford, New Jersey office. She provides SCS with over 15 years of experience in a variety of environmental disciplines and has performed various environmental assessments and investigations throughout the country.

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    • Ms. Bethke is a Senior Project Professional providing support for projects performed out of the SCS’s Medford, New Jersey office. She provides SCS with over 15 years of experience in a variety of environmental disciplines and has performed various environmental assessments and investigations throughout the country. Her experience includes regulatory compliance and permitting, field investigation and sampling activities, environmental due diligence, and environmental impact analyses.

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Ms. Bills (Onstad-Bills) has over 20 years of materials management experience, including working for a hauler, a county government, and a non-profit; she also has over 10 years with materials management consulting firms. She has provided commercial sector materials flow assessments, green events project management, construction and demolition (C&D) research, and recycling and waste management technical support to government agencies and businesses.

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    • Ms. Bills has over 20 years of materials management experience, including working for a hauler, a county government, and a non-profit; she also has over 10 years with materials management consulting firms. She has provided commercial sector materials flow assessments, green events project management, construction and demolition (C&D) research, and recycling and waste management technical support to government agencies and businesses throughout Northern California. A skilled communicator, Ms. Bills specializes in managing technical and outreach projects, conducting research and analysis, and evaluating customer service for municipalities, businesses, and haulers throughout the Bay Area. An expert in the regulatory environment affecting management decision-making and a strong believer in transparency, she takes pride in her ability to engage stakeholders in meaningful, action-oriented ways to drive higher levels of customer service.
      Recent projects include completion of a residential survey for the City of Santa Clara Cleanup Campaign; researching and writing the AB 1826 Organics Management Plan and advising on commercial technical assistance for Los Angeles County; researching grants, loans, and funding for an alternative energy client, a climate inventory submission, public space recycling, and the commercial recycling permit process; auditing customer service and scale house operations for RethinkWaste; preparing an organics study for multi-family dwellings in San Francisco; mandatory organics research for the cities of Alameda, Fremont, and Union City; mandatory recycling technical assistance for StopWaste; anti-scavenging research for RethinkWaste; and project management for 15,000 visual characterization audits in the cities of San Jose, Fremont, and Richmond for Republic Services.

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Dr. Bishop is an environmental engineer with a wealth of knowledge and experience related to environmental issues such as methane gas at landfills, hazardous waste in the subsurface, and leaking underground storage tanks.

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    • Dr. Bishop is an environmental engineer with a wealth of knowledge and experience related to environmental issues such as methane gas at landfills, hazardous waste in the subsurface, and leaking underground storage tanks. His experience includes managing a 35 person, California-certified central laboratory, capable of performing a full range of fuel, environmental, and material analyses. As an environmental engineer, Dr. Bishop combines his knowledge of chemistry, engineering, and the regulatory arena to efficiently process and obtain permits for wastewater and storm water discharges, identify environmental health risks, prepare risk management prevention plans, and complete environmental site assessments.

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