Staff Search Results for "L"

Spencer LaBelle, CPESC, has diverse experience in civil and environmental consulting for municipal solid waste management, coal combustion residual (CCR) management for electric utilities, regulatory compliance, storm water and erosion control management systems, and site development.

    • Spencer LaBelle, CPESC, has diverse experience in civil and environmental consulting for municipal solid waste management, coal combustion residual (CCR) management for electric utilities, regulatory compliance, storm water and erosion control management systems, and site development.

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Mr. Lacasse has over a decade of remediation, sampling, and construction inspection and oversight experience. His experience includes construction oversight, flare system startups and inspections related to greenhouse gas (GHG) offset projects, estimation of GHG emissions and emissions inventories, landfill gas (LFG) collection system design, LFG-related regulatory compliance, LFG modeling, and LFG collection system trouble shooting and diagnostics.

    • Mr. Lacasse has over a decade of remediation, sampling, and construction inspection and oversight experience. His experience includes construction oversight, flare system startups and inspections related to greenhouse gas (GHG) offset projects, estimation of GHG emissions and emissions inventories, landfill gas (LFG) collection system design, LFG-related regulatory compliance, LFG modeling, and LFG collection system trouble shooting and diagnostics. Mr. Lacasse also has experience in the design of treatment systems and field oversight for system installation, start-up, and decommissioning. Mr. Lacasse has specialized experience in wastewater treatment plant and remediation system operation, maintenance, monitoring, troubleshooting and optimization. He has supervised the removal and installation of underground storage tanks (UST) for the Massachusetts Highway Department, in accordance with State and Federal UST regulations.

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Mr. Lakey, LHG, PE, is a Vice President and Project Director. He has been working in the solid waste engineering and environmental consulting field since 1985. Mr. Lakey provides technical expertise for a wide variety of solid waste projects and hydrogeologic studies in the Northwest. His project experience includes the design of bottom liners and cover systems for municipal solid waste landfills, facility permitting, hydrogeologic characterization of solid waste sites, RCRA hazardous waste sites, proposed waste, disposal facilities, agriculture sites, regional aquifer systems, and leaking underground storage tanks, feasibility studies, and site studies for property transfers.

    • Kevin Lakey, LHG, PE, is a Vice President and Project Director. He has been working in the solid waste engineering and environmental consulting field since 1985. Mr. Lakey provides technical expertise for a wide variety of solid waste projects and hydrogeologic studies in the Northwest. His project experience includes the design of bottom liners and cover systems for municipal solid waste landfills, facility permitting, hydrogeologic characterization of solid waste sites, RCRA hazardous waste sites, proposed waste, disposal facilities, agriculture sites, regional aquifer systems, and leaking underground storage tanks, feasibility studies, and site studies for property transfers.
      Mr. Lakey’s responsibilities include engineering design, preparing plans, specifications, and quality assurance documents, coordinating project work, serving as engineer of record, negotiating with agencies, analyzing, and interpreting hydrogeologic and geochemical data, evaluating remedial alternatives for site cleanups, preparing technical reports, and preparing permit documents. In addition, Mr. Lakey has provided expert testimony for several projects related to permitting issues, insurance cost recovery, and litigation. From 1985 through 2009, his previous employment included Dames & Moore, EMCON, and Kleinfelder.

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Mr. Lamb, PE is a Vice President and Project Director with over three decades of experience in solid and hazardous waste management, environmental engineering, civil engineering, hydrology and hydraulics, landfill engineering, remedial design, and regulatory compliance.

    • Mr. Lamb, PE is a Vice President and Project Director with over three decades of experience in solid and hazardous waste management, environmental engineering, civil engineering, hydrology and hydraulics, landfill engineering, remedial design, and regulatory compliance. He has managed over 400 landfill projects for design, permitting, and construction quality assurance (CQA) activities.

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Mr. Lambert serves as a Regional Health and Safety Specialist who coordinates and provides Health and Safety training for SCS Field Services employees in the Eastern Region, as well as SCS Engineers and SCS Energy employees nationwide. He has played a major role in developing SCS’s internal Health and Safety Training Program, including creating training materials/presentations, creating Standard Operating Procedures (SOP), conducting Job Task Safety Analysis (JTSA) for routine tasks performed by personnel and conducting Health and Safety field audits/inspection. Mr. Lambert has also managed and performed installation of landfill gas (LFG) collection systems (including extraction wells, collection piping and flares systems), coordinated and performed monitoring of, maintenance on and repairs to numerous landfill gas collection systems in the Eastern Region, as well as sampling and monitoring of groundwater and other liquids at landfill locations.

    • r. Lambert serves as a Regional Health and Safety Specialist who coordinates and provides Health and Safety training for SCS Field Services employees in the Eastern Region, as well as SCS Engineers and SCS Energy employees nationwide. He has played a major role in developing SCS’s internal Health and Safety Training Program, including creating training materials/presentations, creating Standard Operating Procedures (SOP), conducting Job Task Safety Analysis (JTSA) for routine tasks performed by personnel and conducting Health and Safety field audits/inspection. Mr. Lambert has also managed and performed installation of landfill gas (LFG) collection systems (including extraction wells, collection piping and flares systems), coordinated and performed monitoring of, maintenance on and repairs to numerous landfill gas collection systems in the Eastern Region, as well as sampling and monitoring of groundwater and other liquids at landfill locations.
      Scott has more than two decades of experience as a Preventive Medicine/Environmental Specialist with the U.S. Army, and nearly two decades of hands-on experience in the installation, operation, maintenance and monitoring of landfill gas collection systems. This expertise significantly enhances his ability to provide effective health and safety services for SCS employees and clients.

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Mr. Landeros is a Project Professional in our air quality monitoring division. He has more than two decades of experience in the operation and maintenance of air monitoring equipment and certification standards. He has degrees in engineering and architecture and is fluent in technical English and Spanish.

    • Mr. Landeros is a Project Professional in our air quality monitoring division. He has more than two decades of experience in the operation and maintenance of air monitoring equipment and certification standards. He has degrees in engineering and architecture and is fluent in technical English and Spanish.

Mr. Langdon has three decades of experience in the environmental consulting. His expertise includes project management, hydraulic testing, site characterization, groundwater modeling, environmental site assessment, and vapor intrusion assessment and mitigation with an emphasis on dry cleaner and industrial chlorinated solvent sites. His responsibilities have included management of site investigation and remediation programs, coordination of hydraulic testing programs, designing groundwater flow models, preparing Environmental Site Assessments, and performing a variety of investigative fieldwork including soil and soil gas sampling, drilling oversight, groundwater monitoring well installation, and groundwater sampling.

    • Mr. Langdon has three decades of experience in the environmental consulting. His expertise includes project management, hydraulic testing, site characterization, groundwater modeling, environmental site assessment, and vapor intrusion assessment and mitigation with an emphasis on dry cleaner and industrial chlorinated solvent sites. His responsibilities have included management of site investigation and remediation programs, coordination of hydraulic testing programs, designing groundwater flow models, preparing Environmental Site Assessments, and performing a variety of investigative fieldwork including soil and soil gas sampling, drilling oversight, groundwater monitoring well installation, and groundwater sampling.

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Mr. Lape is a Project Director for the Risk Management Group in our Tracer Environmental Division. His responsibilities include outlining project budgets, organizing project schedules, and quality control. He is experienced in the development and deployment of standardized Risk Management and Process Safety Management (PSM) Programs, including process safety program implementation and PSM support to manufacturing facilities that utilize ammonia as a refrigerant. Prior to joining SCS, he served as Director of EHS Programs and Compliance for Dean Foods were he directed a team of professionals who provided PSM/RMP support, as well as support for storm water, wastewater, and air permitting at the company’s facilities.

    • Mr. Lape is a Project Director for the Risk Management Group in our Tracer Environmental Division. His responsibilities include outlining project budgets, organizing project schedules, and quality control. He is experienced in the development and deployment of standardized Risk Management and Process Safety Management (PSM) Programs, including process safety program implementation and PSM support to manufacturing facilities that utilize ammonia as a refrigerant. Prior to joining SCS, he served as Director of EHS Programs and Compliance for Dean Foods were he directed a team of professionals who provided PSM/RMP support, as well as support for storm water, wastewater, and air permitting at the company’s facilities.
      Mr. Lape’s experience includes developing EPA Risk Management Program submittals for EPA review and approval, all aspects of preparing a PSM program, including participating in Process Hazard Analyses and preparing qualitative risk analyses. Mr. Lape is also experienced in developing Process Safety Information packets, drafting Piping and Instrumentation Diagrams, writing Standard Operating Procedures, and developing and conducting initial and refresher training for Ammonia Refrigeration Operators.
      Mr. Lape has also been involved in auditing PSM programs, performing over 20 audits since 2015, helping to ensure that facilities are keeping their employees and the public safe, while maintaining compliance with regulations. In addition to auditing the safety and compliance programs for ammonia refrigeration facilities, Mr. Lape is often requested to audit the mechanical integrity of those systems.

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Ms. Lary is a senior geologist and project manager with over 25 years of experience in environmental site assessments, site investigations, site remediation and environmental monitoring. She has a broad base of knowledge in sampling various environmental media including soil, groundwater, surface water, sediments, soil gas, indoor and outdoor air, and various solid and liquid waste products. Her experience includes Phase I and Phase II environmental site assessments on properties used for agriculture, single and multi-family residences, dry cleaners, fuel stations, chemical production, large manufacturing, metal coating facilities, transportation, mining, landfills, and lumber mills for both private and municipal clients. She is a Professional Geologist licensed in Oregon and Washington.

    • Ms. Lary is a senior geologist and project manager with over 25 years of experience in environmental site assessments, site investigations, site remediation and environmental monitoring. Ms. Lary has a broad base of knowledge in sampling various environmental media including soil, groundwater, surface water, sediments, soil gas, indoor and outdoor air, and various solid and liquid waste products. Her experience includes Phase I and Phase II environmental site assessments on properties used for agriculture, single and multi-family residences, dry cleaners, fuel stations, chemical production, large manufacturing, metal coating facilities, transportation, mining, landfills, and lumber mills for both private and municipal clients. She is a Professional Geologist licensed in Oregon and Washington.
      Ms. Lary has experience creating scopes of work and associated cost estimates, obtaining permits for drilling, coordinating subcontractors and field crews, and communicating with regulators and clients. Her experience includes developing field sampling plans, project quality assurance plans, health and safety plans, project work plans, data review and management, regulatory review and preparation of technical reports. She has also managed site remediation projects and the decommissioning of remediation systems, underground storage tanks and monitoring wells. She has conducted large drilling programs, managed surface water sampling and conducted stream surveys. Chemical contamination encountered in both soil and groundwater has included petroleum, heavy metals, dioxins/furons, pesticides, herbicides, PCBs, and solvents.

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Dr. Shane Latimer, CSE, is an SCS Vice President. He is an environmental planner, ecologist, and toxicologist with three decades of experience in environmental assessment, planning, permitting, and implementation. His specialty is developing projects that challenge the interface between the built and natural environment, such as solid waste facilities, oil and gas infrastructure, mines, sewage treatment facilities, and similar developments. These projects often require careful assessments of alternatives, impacts, and opportunities to successfully navigate the applicable public regulatory processes (e.g., NEPA, local land use, etc.) and ensure environmental integrity. Dr. Latimer has a thorough understanding of engineering concepts and practices and is adept at working collaboratively with engineers and other professionals to ensure an optimum balance between environmental and engineering constraints.

    • Dr. Shane Latimer, CSE, is a Vice President with SCS Engineers. He is an environmental planner, ecologist, and toxicologist with three decades of experience in environmental assessment, planning, permitting, and implementation. His specialty is developing projects that challenge the interface between the built and natural environment, such as solid waste facilities, oil and gas infrastructure, mines, sewage treatment facilities, and similar developments. These projects often require careful assessments of alternatives, impacts, and opportunities to successfully navigate the applicable public regulatory processes (e.g., NEPA, local land use, etc.) and ensure environmental integrity. Dr. Latimer has a thorough understanding of engineering concepts and practices and is adept at working collaboratively with engineers and other professionals to ensure an optimum balance between environmental and engineering constraints.
      Dr. Latimer’s work during the last 25 years focuses on planning, permitting, and environmental compliance for solid waste facilities in Oregon and Washington. These include five regional landfill expansions, and work on 14 active landfills, 9 closed landfills, and 32 transfer stations. As such, Dr. Latimer is familiar with most elements of solid waste facility planning, development, operation, closure, and post-closure.
      Areas of expertise include site evaluation and constraints analysis; state and local land use permitting; floodplain assessment and permitting; stormwater planning and permitting; wetland and
      water quality assessment and permitting; wetland and riparian restoration; ecological risk assessment; compliance with the National Environmental Policy Act (NEPA), the Endangered Species
      Act, and other federal acts.
      Other areas of management and technical expertise include cultural resources assessment (historic and pre-historic), floodplain management (floodplain permitting and FEMA Conditional/Letters of Map Revision), Environmental Site Assessment, chemical fate and transport, water rights, wildlife and wildlife hazard management (e.g., airport conflicts, nuisance wildlife, etc.), and forest management.

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Mr. Latulippe is responsible for developing and supporting SCS’s nationwide energy management and renewable energy practice. This includes work related to SCS’s air quality, greenhouse gas (GHG), and sustainability initiatives for public and private commercial businesses, industrial facility owners, real estate clients, utilities, and renewable energy project developers. Prior to joining SCS, Doug managed energy portfolios including capital and operating budget development, power generation, demand-side project and program development, bill management and reporting, and utility incentive program management. He also performed energy audits and GHG reporting for Fortune 500 companies.

    • Mr. Latulippe is responsible for developing and supporting SCS’s nationwide energy management and renewable energy practice. This includes work related to SCS’s air quality, greenhouse gas (GHG), and sustainability initiatives for public and private commercial businesses, industrial facility owners, real estate clients, utilities, and renewable energy project developers. Prior to joining SCS, Doug managed energy portfolios including capital and operating budget development, power generation, demand-side project and program development, bill management and reporting, and utility incentive program management. He also performed energy audits and GHG reporting for Fortune 500 companies.
      As part of his power generation experience, he patented a solid-fuel gasification system designed for environmental mitigation and pollution control. Doug was also recognized by the EPA for his extensive work with the ENERGY STAR program.

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Mr. Law is a Vice President of SCS Engineers and our National Geotechnical Expert. He has over three decades of engineering and management experience in geotechnical engineering, solid waste management, landfill engineering, construction quality assurance (CQA) services, and subsurface soil investigation/exploration programs (including embankment and MSE Wall evaluation). He is a licensed Professional Engineer in North Carolina, South Carolina, Virginia, Maryland, and Idaho. He belongs to several industry organizations, including ASCE, SWANA, USGBC, PENC, and is currently a Board Member of the International Solid Waste Association (ISWA).

    • Mr. Law is a Vice President of SCS Engineers and our National Geotechnical Expert. He has over three decades of engineering and management experience in geotechnical engineering, solid waste management, landfill engineering, construction quality assurance (CQA) services, and subsurface soil investigation/exploration programs (including embankment and MSE Wall evaluation). He is a licensed Professional Engineer in North Carolina, South Carolina, Virginia, Maryland, and Idaho. He belongs to several industry organizations, including ASCE, SWANA, USGBC, PENC, and is currently a Board Member of the International Solid Waste Association (ISWA).
      Mr. Law is experienced in closure design, LFG blower and flare foundation design, geotechnical and geosynthetic/soil material testing and analysis, resident/construction engineering and construction quality assurance services, project scheduling and construction cost estimate, foundation bearing/settlement analysis and design, liquefaction analysis, static and seismic slope stability analyses using STABL program, seismic permanent displacement analysis, geosynthetic reinforced slope, embankment and pavement design, writing of geotechnical soil reports, and construction completion certification reports.
      Mr. Law’s solid waste management experience also includes landfill gas collection and utilization as alternate energy, LFG equipment procurement for overseas, material recovery facilities, solid waste transfer station facilities, aerobic bioreactor landfill remediation, bioreactor slope stability analysis, leachate recirculation evaluations in obtaining RD&D permit, and many other major permit amendments for alternate bottom liner (including final cover system) and leachate collection systems through performance equivalency demonstrations using HELP and MULTIMED modeling throughout US.
      In 2012, he served as a panel judge at the US EPA’s Peer Review Panel Meeting for Grants: People, Prosperity, and the Planet – P3 – Phase II Competition in Washington D.C. for projects related to solid waste management, recycling and reused of materials, and the alternate renewable green energy sources. For the last 3 years since 2013, he served as a judge for the AAEES 2013 Excellence in Environmental Engineering & Science Awards E3 Competition, for entries in Research, Planning, Design, and Operations/Management categories. Other paper/publication review experience includes publishing papers at national and international conferences, as well as serving as a paper reviewer for the Editorial Board of the International Solid Waste Association (ISWA) on regular basis.
      Contact James at 919-662-3015 or

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Mr. Leadford has more than 9 years of experience in the air quality field. His specialties include air dispersion modeling, emission inventory production, GIS mapping, and air monitoring. Since joining SCS Engineers in February 2019, he has created emission inventories, submitted reports, and run air dispersion modeling on numerous landfills in the Pacific Northwest. Mr. Leadford is a Professional Engineer licensed in Oregon, and received his Bachelor’s of Science degree in Chemical Engineering from the University of Colorado. He is also a licensed FAA Remote Pilot.

    • Mr. Leadford has more than 9 years of experience in the air quality field. His specialties include air dispersion modeling, emission inventory production, GIS mapping, and air monitoring. Since joining SCS Engineers in February 2019, he has created emission inventories, submitted reports, and run air dispersion modeling on numerous landfills in the Pacific Northwest. Mr. Leadford is a Professional Engineer licensed in Oregon, and received his Bachelor’s of Science degree in Chemical Engineering from the University of Colorado. He is also a licensed FAA Remote Pilot.
      Mr. Leadford has submitted semi-annual and annual reports for a dozen landfills in the Pacific Northwest to comply with NSPS Subpart WWW as well as state regulations, and has calculated and submitted greenhouse gas reports to comply with 40 CFR Part 98 and state requirements.

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Carlo Lebron, PE is a Senior Vice President and the Business Unit Director of the Southeast Region. He has over two decades of experience in a wide variety of environmental projects with particular emphasis on solid waste management. He is a licensed Professional Engineer in Florida, Georgia, Alabama, North Carolina and Puerto Rico. Mr. Lebron is also Vice President of SCS Engineers Puerto Rico PC.

    • Carlo Lebron, PE is a Senior Vice President and the Business Unit Director of the Southeast Region. He has over two decades of experience in a wide variety of environmental projects with particular emphasis on solid waste management. He is a licensed Professional Engineer in Florida, Georgia, Alabama, North Carolina and Puerto Rico. Mr. Lebron is also Vice President of SCS Engineers Puerto Rico PC.
      Mr. Lebron has been practicing solid waste engineering since 1999 and has worked on projects in more than half the country. He has experience in landfill gas collection systems and landfill gas to energy projects all across the U.S. He has experience on more than 100 landfill gas projects, including evaluation, design, permitting, construction, operation. He has led a solid waste group that has experience in construction management and oversight of landfill and landfill gas collection systems, soil vapor extraction systems, and other solid waste construction projects. Mr. Lebron has extensive experience with Title V permitting and other regulatory requirements associated with landfill gas collection systems such as NSPS and NESHAP.

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Mr. Legaspi is a Senior Vice President and Assistant Business Unit Director of our O&M Division. He has 25 years of experience in planning, directing, and implementing landfill gas (LFG) and groundwater operation, maintenance, and monitoring (OM&M) and construction projects, particularly related to LFG and groundwater extraction and treatment systems.

    • Mr. Legaspi is a Senior Vice President and Assistant Business Unit Director of our O&M Division. He has 25 years of experience in planning, directing, and implementing landfill gas (LFG) and groundwater operation, maintenance, and monitoring (OM&M) and construction projects, particularly related to LFG and groundwater extraction and treatment systems.

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Dr. Lemaster is a Senior Project Manager in our SCS Tracer Division. She is responsible for the documentation of Process Safety Management Programs (PSM) / Risk Management Programs (RMP) / California Accidental Release Prevention Programs (CalARP) projects for regulated facilities using hazardous materials. She has a Bachelor’s Degree in Chemical Engineering, and recently earned her Masters and PhD in NanoEngineering from the University of California, San Diego.

    • Dr. Lemaster is a Senior Project Manager in our SCS Tracer Division. Her main area of concentration is risk analysis. The main focus of her work is the preparation and completion of multiple projects and general risk analysis work for many clients. She has a Bachelor’s Degree in Chemical Engineering, and recently earned her Masters and PhD in NanoEngineering from the University of California, San Diego.
      Dr. Lemaster is responsible for the documentation of Process Safety Management Programs (PSM) / Risk Management Programs (RMP) / California Accidental Release Prevention Programs (CalARP) projects for regulated facilities using hazardous materials. This work includes preparing the program documentation for compliance with the PSM/RMP/CalARP regulations, leading Process Hazard Analyses (PHA) studies, completing Hazard Assessments, providing CalARP implementation training, developing Piping and Instrumentation Diagrams, conducting Seismic Assessments, and producing project-related technical reports.

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Daniel M. Leo is experienced in renewable energy industries, including fuel ethanol, gasification, pyrolysis, syngas cleaning, fischer-tropsch synthesis, and renewable natural gas (RNG) production. He currently is a member of the SCS Energy process engineering team responsible for the design, construction and operation/maintenance of biogas to Renewable Natural Gas and energy facilities.

    • Daniel M. Leo is experienced in renewable energy industries, including fuel ethanol, gasification, pyrolysis, syngas cleaning, fischer-tropsch synthesis, and renewable natural gas (RNG) production. His background is in chemical process engineering and intellectual property management and he currently is a member of the SCS Energy process engineering team, a division within SCS Engineers, which is responsible for the design, construction and operation/maintenance of biogas to Renewable Natural Gas & energy facilities. He provides a wide array of engineering and patent services ranging from innovation to commercialization.
      Mr. Leo has invented, commercialized, and authored a portfolio of sixty-three patents and patent applications all over the world directed at renewable energy gasification to liquid fuel technology.

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Michelle Leonard
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Michelle Leonard
Senior Vice President/Project Director/National Expert on Solid Waste Planning and Recycling
Pasadena, CA
National Expert: Solid Waste Planning and Recycling
O. (626) 792-9593

Ms. Leonard is a Senior Vice President of SCS Engineers and our National Expert on Solid Waste Planning & Recycling. She has over 35 years of experience in environmental consulting and project management, with emphasis in Sustainable Materials Management, including solid waste management planning and facilities. She helps public and private sector clients prepare solid waste management plans; designs and implements waste reduction, recycling, and reuse programs; and evaluates existing programs to identify opportunities to reduce, reuse, and recycle solid waste. She prepares plans and permits for transfer stations, material recovery facilities (MRFs), and drop-off and buy-back centers.

    • Ms. Leonard is a Senior Vice President of SCS Engineers and our National Expert in Solid Waste Planning & Recycling. She has over 35 years of experience in environmental consulting and project management, with emphasis in Sustainable Materials Management, including solid waste management planning and facilities. She helps public and private sector clients prepare solid waste management plans; designs and implements waste reduction, recycling, and reuse programs; and evaluates existing programs to identify opportunities to reduce, reuse, and recycle solid waste. She prepares plans and permits for transfer stations, material recovery facilities (MRFs), and drop-off and buy-back centers. She completes environmental impact assessments, facility permit applications, odor and dust control plans, and other support documents. Ms. Leonard has a strong working knowledge of solid waste management regulations and practices, and has prepared numerous successful projects to city, county, and state regulators.
      Ms. Leonard is a member of the Solid Waste Association of North America (SWANA), including International Board Past President; Past Director of SWANA’s Recycling and Special Waste Technical Division; and is on the Board of Directors of SWANA’s Southern California Founding Chapter (2009 to present). She is also a Past Director of the Southern California Waste Management Forum and Past President of the Women’s Environmental Council. She was appointed by the Secretary of Commerce as a Member of the Environmental Technologies Trade Advisory Committee.
      Contact Michelle at 626-792-9593 or

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Mr. LeTendre SCS Field Services’ manager for the New England area and oversees both the Taunton, MA, and Johnston, RI, field offices. He supervises, manages and conducts landfill surface emissions monitoring and reporting, flare source test monitoring and reporting, the operations, maintenance and reporting of LFG collection and control systems (GCCSs), building specific extraction systems, passive LFG barrier/vent systems, groundwater pump and treat systems, leachate collection and recovery systems (LCRSs), and automatic methane gas detection systems.

    • Mr. LeTendre SCS Field Services’ manager for the New England area and oversees both the Taunton, MA, and Johnston, RI, field offices. He supervises, manages and conducts landfill surface emissions monitoring and reporting, flare source test monitoring and reporting, the operations, maintenance and reporting of LFG collection and control systems (GCCSs), building specific extraction systems, passive LFG barrier/vent systems, groundwater pump and treat systems, leachate collection and recovery systems (LCRSs), and automatic methane gas detection systems.
      He manages several projects/landfills in the New England Area and has managed, supervised, or conducted over 25 migration control and recovery system projects, as well as groundwater pump and treat O&M projects, leachate collection and recovery projects for over 20 years.
      Mr. LeTendre is also an experienced troubleshooter concerning problems with LFG collection, flaring, and detection systems; leachate collection and recovery systems; Examples of his projects are provided below.

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Mr. Lewallen has experience managing both construction and OM&M projects, including wellfield assessment & tuning, procurement, estimating, scheduling, budgeting, monitoring data analysis and sub-contractor management, as well as other administrative activities. He has been responsible for estimating and managing a wide range of landfill gas control system upgrades and expansion projects for both private and municipal entities. His specific experiences include work related to LFG collection systems monitoring and construction, extraction well construction, flare installations/upgrades, polyethylene (PE) pipe fusion, polyvinyl chloride (PVC) pipe installation, horizontal collection trenches, and condensate collecting/containment systems.

    • Prior to joining SCS Field Services, Mr. Lewallen worked in the residential and commercial construction industry for 13 years overseeing the construction of custom homes, residential communities, and commercial buildings in and around the Dallas/Fort Worth, Texas area. During his tenure as Project Manager, Mr. Lewallen managed large residential projects with responsibilities including project budgeting, scheduling, sub-contractor negotiations/management, vendor procurement, client communications, and design management.
      In 2008, Mr. Lewallen joined the SCS team and merged his construction experience with his formal educational training and is now holding the position of Project Manager over landfill construction projects.
      Mr. Lewallen currently provides SCS Field Services with expertise in construction management including procurement, estimating, scheduling, budgeting, and sub-contractor management, as well as other administrative activities.
      Mr. Lewallen has been responsible for estimating and managing the construction on a wide range of landfill gas control system upgrades and expansion projects for both private and municipal entities. His specific experiences include work related to LFG collection systems, extraction well construction, flare installations/upgrades, polyethylene (PE) pipe fusion, polyvinyl chloride (PVC) pipe installation, horizontal collection trenches, and condensate collecting/containment systems.

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Mr. Lewis is a Vice President of SCS and has been with SCS Field Services since 1987. Mr. Lewis’s long career at SCS started as a field technician maturing to a Vice President and Regional Manager. He leads construction, operation, and repair of environmental pollution control facilities and remediation projects.

    • Mr. Lewis is a Vice President of SCS and has been with SCS Field Services since 1987. Mr. Lewis’s long career at SCS started as a field technician maturing to a Vice President and Regional Manager. He leads construction, operation, and repair of environmental pollution control facilities and remediation projects. Most of this SCS experience has involved the construction of new and expanded landfill gas (LFG) collection, flaring and utilization systems.
      Many projects involve major overhauls and repairs. LFG projects under Mr. Lewis’ direction have included landfill gas to energy facilities, compressor stations, off-site landfill gas pipelines for direct use, gas extraction well installations, collection header lines, polyethylene (PE) pipe fusion, polyvinyl chloride (PVC) pipe installation, installation of condensate/leachate containment and collection facilities, installation of blower/flare station mechanical equipment (including concrete pads, blowers, flares, compressors, condensate tanks, pumps, flame arrestors, electrical panels, etc.), repair of landfill cover systems, erosion and sediment controls, and landfill revegetation.
      Mr. Lewis’ construction experience also includes numerous remediation projects. These projects include underground storage tank (UST) excavation and removal, chemical and petroleum contaminated soil excavation, transportation, and disposal, construction of soil vapor extraction systems (VES), including installation of air monitoring facilities at a state Superfund site, and construction of a combination VES/biotreatment system.

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Mr. Liggins is the Chief Financial Officer (CFO) of SCS Engineers. He is responsible for managing financial risks, as well as financial planning and analytics. He is a certified public accountant with over ten years of experience in related financial positions with service driven companies. Mr. Liggins has a Master’s degree in Taxation from Golden Gate University and a BA in Business Management and Accounting from Western Michigan University, Haworth College of Business.

    • Mr. Liggins is SCS Engineers’ Chief Financial Officer. He previously served as our Controller. He is a certified public accountant with over ten years of experience in related financial positions with service driven companies. Mr. Liggins has a Master’s degree in Taxation from Golden Gate University and a BA in Business Management and Accounting from Western Michigan University, Haworth College of Business. As the accounting officer at SCS, he is responsible for ensuring effective and efficient recording of accounting transactions, as well as monitoring adherence to established operating procedures and internal controls.

Mr. Linehan is a Vice President and a Project Director responsible for overseeing solid waste and environmental services projects from the SCS Oklahoma City and Wichita offices. He has a broad range of expertise, including solid and hazardous waste regulations, landfill design, and regulatory compliance. Mr. Linehan has participated in or directed numerous projects including: landfill projects, compliance audits, storm water modeling and design, remedial action plans, remedial systems designs, site investigations, health and safety assessments, waterway crossing assessments, and construction projects. Project sites have included solid waste facilities, active and closed landfill sites, oil well fields, fuel storage facilities, vehicle maintenance facilities, truck stops, industrial sites, and agricultural sites. He holds professional engineering licenses in Kansas, Missouri, Nebraska, and Oklahoma.

    • Mr. Linehan is a Vice President and a Project Director responsible for overseeing solid waste and environmental services projects from the SCS Oklahoma City and Wichita offices. He has a broad range of expertise, including solid and hazardous waste regulations, landfill design, and regulatory compliance. Mr. Linehan has participated in or directed numerous projects including: landfill projects, compliance audits, storm water modeling and design, remedial action plans, remedial systems designs, site investigations, health and safety assessments, waterway crossing assessments, and construction projects. Project sites have included solid waste facilities, active and closed landfill sites, oil well fields, fuel storage facilities, vehicle maintenance facilities, truck stops, industrial sites, and agricultural sites. He holds professional engineering licenses in Kansas, Missouri, Nebraska, and Oklahoma.

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Stephanie Liptak, EIT, specializes in landfill gas design, master planning, permitting, construction management, and construction quality assurance. She has a broad range of experience with the regulatory requirements of the Florida Department of Environmental Protection and assists private and municipal landfills by providing regulatory compliance support including: Title V air permitting, annual and semi-annual compliance reporting, review of monthly LFG data and greenhouse gas reporting.

    • Stephanie Liptak, EIT, specializes in landfill gas design, master planning, permitting, construction management, and construction quality assurance. She has a broad range of experience with the regulatory requirements of the Florida Department of Environmental Protection and assists private and municipal landfills by providing regulatory compliance support including: Title V air permitting, annual and semi-annual compliance reporting, review of monthly LFG data and greenhouse gas reporting.

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Dr. Lister has 40 years of professional experience in geology and hydrogeology. His experience includes groundwater investigations at active and inactive industrial facilities; active, inactive, and planned solid waste disposal sites; and state and federal Superfund sites.

    • Dr. Lister has 40 years of professional experience in geology and hydrogeology. His experience includes groundwater investigations at active and inactive industrial facilities; active, inactive, and planned solid waste disposal sites; and state and federal Superfund sites.

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Joey Litchfield has over 35 years of experience in a variety of solid waste projects for both private and municipal facilities in Florida. He performs landfill operations management and surveying of landfills, geosynthetic panel layout, gas collection systems, transfer stations, storm water protection and drainage systems.

    • His responsibilities include landfill operations manager, landfill site surveyor, construction surveying including designing landfill gas collection systems, flare and blower station installation, site cell development and drainage system surface water management control projects, high rise projects, airport runway and taxiway systems. His CQA responsibilities include providing support for CQA reports for soil and geosynthetic liners and serving as on-site lead technician for geosynthetic liner systems.

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Mr. Llanas is experienced in all aspects of landfill gas system construction, including collection pipe fusion and installation, LFG extraction well installation, leachate recovery system installation, flare installation and maintenance, and omissions maintenance and monitoring services. Mr. Llanas also has a wide breadth of experience in performing the full range of Landfill Gas Collection System CQA and construction oversight duties.

Mr. Lock is a Vice President of SCS and O&M Regional Manager. He has over three decades of experience in landfill gas (LFG) collection system operation and maintenance (O&M), environmental regulatory compliance, site assessment, and post-closure care. He manages technical staff working on projects throughout the Northeastern United States.

    • Mr. Lock is a Vice President of SCS and O&M Regional Manager. He has over three decades of experience in landfill gas (LFG) collection system operation and maintenance (O&M), environmental regulatory compliance, site assessment, and post-closure care. He manages technical staff working on projects throughout the Northeastern United States.
      His background includes developing and/or evaluating monitoring equipment; actively participating in planning and management of research and development and construction projects; managing ongoing environmental sampling and monitoring programs; reviewing gas system construction designs; managing LFG collection system O&M; developing and delivering technical training sessions; evaluating, coordinating, and tracking expenses; and hiring and evaluating engineering technicians.
      Formerly with the Los Angeles County Sanitation Districts (LACSD), Mr. Lock managed a staff of 20 engineering technicians at several landfills in the County. He was responsible for O&M of the gas collection systems at two landfills, including flaring stations, condensate and leachate collection systems, and odor control systems. Both sites supplied fuel to gas-to-energy or compressed gas facilities. Other responsibilities included groundwater quality and runoff monitoring at six landfills, a transfer station, and a refuse-to-energy plant; regulatory compliance monitoring of surface gas emissions and ambient air at two landfills; and ash sampling at a refuse-to-energy plant.

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Ms. Luu is a Project Professional for the Tracer Environmental division, based out of California’s Central Coast. She has over 5 years of experience in ambient air monitoring, ranging from black carbon in the LA basin, formaldehyde at the highest peak in Germany, to odors in different applications around the nation.

    • Ms. Luu is a Project Professional for the Tracer Environmental division, based out of California’s Central Coast. She has over 5 years of experience in ambient air monitoring, ranging from black carbon in the LA basin, formaldehyde at the highest peak in Germany, to odors in different applications around the nation. She conducts routine operation and inspection of air monitoring stations as well as the calibration and operation of pollutant analyzers, meteorological sensors, chart recorders, data acquisition systems, computers and their associated software and peripherals. She also compiles monthly air monitoring reports and submits validated, processed data for air monitoring stations to the California Air Resource Board and the Santa Barbara County APCD. Ms. Luu has conducted a variety of odor assessment projects across the nation, ranging from alternative agriculture farms to landfills.

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Trevar Lytle, EIT, is experienced in Civil and Environmental Engineering. His project experience includes landfill design and permitting, landfill construction quality assurance, Gas Collection and Control System design and permitting, Gas Collection and Control Construction Quality Assurance, Phase I and Phase II Environmental Site Assessments, Leachate and Stormwater Management, and numerous other field activities.

    • Trevar Lytle, EIT, is experienced in Civil and Environmental Engineering. His project experience includes landfill design and permitting, landfill construction quality assurance, Gas Collection and Control System design and permitting, Gas Collection and Control Construction Quality Assurance, Phase I and Phase II Environmental Site Assessments, Leachate and Stormwater Management, and numerous other field activities.

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