Our Professionals

SCS Leadership

SCS professionals are active in, and leaders of industry and professional associations. We organize and participate in workshops and conferences, author and present technical papers, conduct research, and participate in national and state-level legislative and rule-making processes and regulatory policy. Our engineers, environmental consultants, and scientists work in close coordination on environmental solutions.

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Leadership
James Walsh
President/CEO
O. (513) 421-5353

Jim Walsh, PE, BCEE, President and CEO of SCS Engineers, has worked at the forefront of sustainable solid waste management, sanitary landfills, and landfill gas (LFG) for more than 40 years. He has authored numerous publications and technical support documents and has presented regularly at environmental conferences.

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    • Jim Walsh, PE, BCEE, President and CEO of SCS Engineers, has worked at the forefront of sustainable solid waste management, sanitary landfills, and landfill gas (LFG) for more than 40 years. He has authored numerous publications and technical support documents and has presented regularly at environmental conferences.
      Practice Areas
      Mr. Walsh has acquired an excellent reputation as a leader in the following practice areas:
      Landfill Engineering: Mr. Walsh served as Project Manager and primary author of the U.S. EPA landfill manual and as Project Manager and Chief Investigator on several U.S. EPA landfill R&D efforts relating to leachate, gas, and liner/cap performance. He has been engaged on over 100 landfill design and permitting projects, including sites with double composite liner systems. He has managed or directed several successful Brownfield and landfill expansion permits with individual design capacities in excess of 25 million tons of solid waste.
      Landfill Gas: Mr. Walsh has served as the Principal Investigator on multiple landfill gas R&D projects for U.S. EPA, U.S. DOE, and Gas Research Institute. He has been engaged as Chief Design Engineer, Principal Investigator, or Project Manager on over 300 landfill gas projects over the years. Landfill gas related subjects include: gas migration and control, energy recovery, odor management, and compliance with air and solid waste rules including CAA, NSPS, Title V, NSR, PSD, NESHAP, and Subtitle D. He is a past director of the SWANA LFG Management Division, the leading LFG professional organization. In 1997, he received the SWANA Landfill Gas Distinguished Service Award, the top award in landfill gas practice.
      Landfill Due Diligence and Risk Management as Principal Investigator or Chief Engineer on over a dozen landfill fire and landfill heating event projects. Mr. Walsh has provided guidance, investigated landfill fires in-situ, and developed management and mitigation programs to address due diligence and risk. He served on the Ohio EPA Committee formed to address landfill fires and other heating events in the state, and assisted in the development of the Ohio EPA Guidance Document on the subject.
      Upon his election to the Board of Directors of the Environmental Research and Education Foundation (EREF), Mr. Walsh said, “EREF’s contribution to the solid waste industry is of major importance as rules governing solid waste and the influence of new technology are rapidly changing our business. I look forward to contributing to the Board and their support of continuing the education of individuals whose aptitude and ability will generate the next generation of environmental solutions.”

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Tom Conrad
Founding Principal, Director Emeritus
O. (571) 353-2028

Tom Conrad, PE, is a founding principal and director emeritus of SCS Engineers. He has 50 years of experience in civil and environmental engineering, construction, and energy management. His environmental engineering experience has been in waste management, with the vast majority in solid waste.

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    • Mr. Conrad is a founding principal and director emeritus of SCS Engineers, with 50 years of experience in civil and environmental engineering, construction and energy management.
      Practice Areas
      More than 40 of Mr. Conrad’s years in the environmental engineering industry has been in waste management, and the vast majority of that has been in solid waste: landfills; landfill gas (LFG) control; LFG to Energy; leachate management; solid waste management, recycling, and sustainability plans; waste conversion technologies; yard waste composting; material recovery facilities; and transfer stations.
      Mr. Conrad’s energy management experience includes serving as the program manager on SCS’s GSA energy schedule contract and blanket purchase agreements (BPAs) for GSA and the National Park Service, performing energy and water audits, and conducting retro-commissioning.

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Michael McLaughlin
Senior Vice President
O. (571) 353-2002

Mike McLaughlin, PE, is SCS Engineers’ Senior Vice President of Environmental Services and our National Specialist on Brownfields & Landfill Redevelopment and Electric Utilities. He is a licensed engineer and attorney with over 30 years of professional experience providing advice on environmental matters. He is an expert on environmental compliance, remediation, and allocation of response costs.

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    • Mike McLaughlin, PE, is SCS Engineers’ Senior Vice President of Environmental Services and our National Specialist on Brownfields & Landfill Redevelopment and Electric Utilities. He is a licensed engineer and attorney with over 30 years of professional experience providing advice on environmental matters. He is an expert on environmental compliance, remediation, and allocation of response costs.
      Mr. McLaughlin advises developers, contractors, lenders and land development professionals on the technical and regulatory requirements for construction on Brownfields sites nationwide. His combined engineering and legal background provides an unusual perspective on land development where hazardous wastes or other environmental challenges are present. Redevelopment of closed landfills is an area of special interest; he worked on his first such project in 1976.
      In addition to his extensive Brownfields redevelopment experience in North America, Mr. McLaughlin has worked at some three dozen Superfund National Priorities List sites in 17 states, and on scores of regulatory compliance, voluntary cleanup, and remediation projects for commercial, industrial, municipal, and military clients. He is also well-versed in liquids management.
      He is a licensed professional engineer in Virginia and New Mexico, a member of the Virginia Bar, and active in the American Bar Association (Section of Environment, Energy and Resources and Waste Management Committee), the Virginia State Bar Environmental Law Section, and the Urban Land Institute.

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Robert Gardner
Senior Vice President
O. (757) 466-3361

Mr. Gardner is a Senior Vice President and leads SCS’s nationwide solid waste management practice, including landfill engineering, landfill gas management, solid waste studies, landfill environmental systems, liquids management, operation and maintenance, and construction. He works closely with SCS’s national and regional clients. Mr. Gardner is also our National Expert on Solid Waste Collection and Routing and on Solid Waste Finance and Rate Studies.

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    • Mr. Gardner is a Senior Vice President and leads SCS’s nationwide solid waste management practice, including landfill engineering, landfill gas management, solid waste studies, landfill environmental systems, liquids management, operation and maintenance, and construction. He works closely with SCS’s national and regional clients. Mr. Gardner is also our National Expert on Solid Waste Collection and Routing and on Solid Waste Finance and Rate Studies.
      Practice Areas
      Since joining SCS in 1980, Mr. Gardner has completed solid waste, hazardous waste, environmental assessment, facility design, compliance audit and other environmental study projects for municipal and private clients. Projects typically have involved feasibility studies, due diligence investigations, facility siting, site investigations, environmental studies, permitting, design and construction services.
      Facilities have included landfills, landfill gas control facilities, material recovery facilities, transfer stations, wastewater treatment plants, and support facilities (e.g., roadways, buildings, stormwater, utilities). Other projects have included waste composition studies, rate studies, compliance audits, site assessments, and preparation of various procurement documents.
      Mr. Gardner has participated in or directed numerous environmental site assessments, contamination assessments, remedial action plans and remedial construction projects throughout the United States. Project sites have included fuel storage facilities, vehicle maintenance facilities, truck stops, chemical processing plants, active and closed landfill sites, abandoned chemical disposal sites, and superfund sites. Chemical contamination encountered in both soil and groundwater media has included petroleum, heavy metals, dioxin, pesticides, heavy metals, PCBs, and solvents.

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Curtis Jang
Senior Vice President and Chief Financial Officer
O. (562) 426-9544

Curtis Jang is SCS Engineers’ Chief Financial Officer, a Senior Vice President, and a member of the Board of Directors. He is responsible for the strategic direction and execution of SCS’s day-to-day activities in finance, accounting, human resources, information technology and health and safety.

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    • Curtis Jang is SCS Engineers’ Chief Financial Officer (CFO) and a Senior Vice President. He currently sits on the SCS Engineers Board of Directors. He is responsible for the strategic direction and execution of SCS’s day-to-day activities in finance, accounting, human resources, information technology and health and safety.
      Practice Areas
      Mr. Jang’s key responsibilities include overseeing the financial development of the firm and its subsidiaries, analytical review of financial results including key metrics, overseeing financial audits, overseeing preparation of corporate tax returns, examining methods for reducing the company’s tax burden, managing cash flow improvement strategies, developing and executing the firm’s mergers and acquisition strategic initiative, active role in the development and approval of the firm’s IT strategic initiatives, annual budgeting, overseeing the annual benefits package renewals, monitoring and developing solutions to human resources and employment issues.
      His career as a finance and accounting executive spans 20 years and encompasses finance, strategic planning, risk management/surety, information technology, and human resources.

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Jay Hatho
Senior Vice President / Chief Information Officer-Chief Technology Officer
O. (562) 426-9544

Jay Hatho is a Senior Vice President of SCS Engineers, our Technology Officer/Chief Information Officer, and our National Expert on Technology Services. He is responsible for developing new technologies that collect, monitor and control systems in the field.

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    • Jay Hatho is a Senior Vice President of SCS Engineers, our Technology Officer/Chief Information Officer, and our National Expert on Technology Services. He is responsible for developing new technologies that collect, monitor and control systems in the field. He has employed new hardware and software not previously utilized in the environmental engineering field. These new technologies help to reduce the costs of running and operating engineering projects, and are now sold as a product to clients. This helped launch a product development organization at SCS known as SCS eTools.
      Jay has leveraged hardware, software, and wireless technology to streamline the operations, maintenance, and monitoring of data that is collected at landfills. Landfills and landfill gas in particular, along with other industries must comply with government regulations. Collecting, storing and analyzing compliance data is expensive because traditionally it was time consuming and sometimes dangerous to collect. SCS Technology developed a secure and user-friendly web-based application to identify, collect, track, and report in real-time the data required to meet compliance regulations. The components work wirelessly and are built to last even under extreme weather conditions.
      Mr. Hatho also oversees the modernization and standardization of SCS’s IT organization to support the company’s growth. He is responsible for deploying modern technologies to help improve communication throughout the company and for leading the development of software products both internally and for clients.
      Prior to joining SCS, Mr. Hatho developed technology platforms and infrastructure for a major online brokerage firm, and served as the director of engineering for a major computer manufacturer. He started large organizations overseas and locally that improved business and helped increase revenues for several companies, and managed multi-million dollar engineering budgets while maintaining strict fiscal controls and disciplines.

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Thomas Barham
Senior Vice President/Director Field Services Division
O. (571) 353-2037

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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Steve Hamilton
Senior Vice President/Office Director
O. (707) 695-8543

Steve Hamilton is a Senior Vice President of SCS and our National Expert on Landfill Gas and Biogas to Energy. He is the Director of SCS Energy, which is the SCS Engineers profit center that designs, builds, and operates biogas — primarily landfill gas (LFG) and digester-gas-to-energy projects.

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    • Steve Hamilton is a Senior Vice President of SCS and our National Expert on Landfill Gas and Biogas to Energy. He is the Director of SCS Energy, which is the SCS Engineers profit center that designs, builds, and operates biogas — primarily landfill gas (LFG) and digester-gas-to-energy projects. SCS Energy has performed dozens of design and design/build biogas-to-energy projects and currently operates/maintains biogas-to-energy projects nationwide. The biogas end-uses include electric power generation (reciprocating internal combustion engines, turbines, microturbines, and fuel cells), direct-use of biogas in lieu of natural gas at industrial, utility, and institutional facilities, production of high-BTU biogas for injection into natural gas pipelines, and production of biogas-derived compressed natural gas (CNG) for use as vehicle fuel.
      Mr. Hamilton has over 30 years of environmental project experience, ranging from hands-on participation in field and design work to direction of solid waste management projects. This work has involved over 700 projects on more than 350 sites throughout the United States and abroad. His project responsibilities have included solid waste planning; solid waste privatization; landfill siting, design and operations, and closure permits and plans; landfill contamination assessments and remedial actions; landfill leachate monitoring and treatment system design; landfill groundwater and LFG monitoring programs; landfill Clean Air Act (CAA) permitting and compliance; LFG Clean Development Mechanism (CDM) projects, digester gas and LFGE recovery feasibility due-diligence, studies, and investigations; testing, designing, installing and operating digester gas and LFGE facilities, and LFG migration and emission control systems.
      Mr. Hamilton is a Past Director of SWANA’s Landfill Gas and Biogas Division, and he Chaired SWANA’s Landfill Gas Training Program for over 10 years. He has extensive experience in providing solid waste training and education at numerous venues in the United States and abroad.

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Galen Petoyan
Senior Vice President / Director OM&M Division
O. (562) 426-9544

Galen Petoyan directs SCS’s nationwide Operations, Monitoring, and Maintenance, (OM&M) practice. He has technical and management experience in environmental engineering, including design, construction, and operation of regulatory compliance systems and energy recovery facilities.

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    • Galen Petoyan directs SCS’s nationwide Operations, Monitoring, and Maintenance (OM&M) practice. He has technical and management experience in environmental engineering, including design, construction, and operation of regulatory compliance systems and energy recovery facilities.
      Practice Areas
      Mr. Petoyan’s experience has primarily involved landfill gas (LFG) control and recovery; landfill fire containment, control, and emergency response; surface emission monitoring and control; odor detection and management; liquids management, including leachate collection, treatment, and disposal; volatile organic compound (VOC) vapor extraction and disposal; groundwater pump and treat; landfill post-closure monitoring, maintenance, and reporting; data management, validation, and reporting; remote telemetry; compliance auditing; and health and safety program deployment and implementation.
      Mr. Petoyan is also responsible for implementing the firm’s technical review, quality assurance, health and safety, and compliance audit programs. Other remediation experience includes underground storage tank (UST) removal, dig-and-haul, and bioremediation cleanup of contaminated soil.

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Patrick Sullivan
Senior Vice President/Office Director
O. (916) 361-1297

Mr. Sullivan, BCES, CPP, REPA, is a Senior Vice President of SCS Engineers and our National Expert on the Landfill Clean Air Act and the New Source Performance Standard (NSPS). Mr. Sullivan has over 25 years of environmental engineering experience, specializing in solid waste-related issues.

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    • Pat Sullivan, BCES, CPP, REPA, is a Senior Vice President of SCS Engineers and our National Expert on the Landfill Clean Air Act and the New Source Performance Standard (NSPS).
      Mr. Sullivan has over 25 years of experience in the area of environmental engineering, specializing in solid waste management and other environmental issues. He is the Managing Director of SCS Engineers (SCS) consulting and engineering operations within the Southwestern United States, the largest of all of SCS’s engineering business units. He also serves as the Practice Leader for SCS’s Solid Waste Practice in the same region. Mr. Sullivan is the National Expert for SCS’s companywide Air Quality program. He also oversees SCS’s company-wide GHG and Risk Assessment programs and is one of the national experts on risk assessment and toxic exposure issues for solid waste facilities.Mr. Sullivan is a company Senior Vice President and Member of the Company’s Management Advisory Committee.
      Practice Areas
      Mr. Sullivan is also Principal-in-Charge for projects related to solid waste facility investigation and risk assessment, redevelopment, LFG engineering, air quality permitting and compliance, GHG emissions, and groundwater investigations at solid waste and other industrial facilities, as well as related engineering services. He has published and/or presented over 100 technical papers in industry journals, publications, conferences, seminar, and workshops.

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Eddy Smith
Senior Vice President/Office Director
O. (305) 342-8691

Eduardo Smith, Senior Vice President of SCS Engineers, has over 20 years of environmental and civil engineering design and consulting experience in the areas of planning, permitting, design and construction involving contamination assessment and remediation, solid waste and storm water management, and water/natural resources. He is the Office Director of the Florida and Georgia regional offices.

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    • Eduardo Smith, Senior Vice President of SCS Engineers, has over 20 years of environmental and civil engineering design and consulting experience in the areas of planning, permitting, design and construction involving contamination assessment and remediation, solid waste and storm water management, and water/natural resources. His long standing working relationships with many of the environmental regulators in South Florida has proven to be greatly beneficial to the clients he serves.
      Mr. Smith’s management and technical experience is demonstrated by his successful execution on some of the largest, highest-profile, and environmentally sensitive projects in South Florida including the Old South Dade Landfill Closure Enhancement design/build project, and the Virginia Key, Homestead, Munisport (Biscayne Landing), and Peerless Landfill re-development projects in which he led the engineering and permitting.

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Doug Doerr
Senior Vice President/Office Director
O. (913) 749-0702

Doug Doerr, PE, is a Senior Vice President of SCS Engineers. He is experienced in a wide variety of environmental projects with particular emphasis on solid waste management. Throughout his career, Mr. Doerr has been instrumental in developing client strategies to address various regulatory and other complex environmental issues.

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    • Doug Doerr, PE, is a Senior Vice President of SCS Engineers. He is experienced in a wide variety of environmental projects with particular emphasis on solid waste management. Throughout his career, Mr. Doerr has been instrumental in developing client strategies to address various regulatory and other complex environmental issues. He has a bachelor’s degree in Civil Engineering and a master’s degree in Business Administration, and is a licensed professional engineer in Colorado, Illinois, Kansas, Missouri and Nebraska.
      Practice Areas
      Mr. Doerr’s project experience includes landfill and surface impoundment permitting and design, environmental monitoring; transfer station and material recovery facility permitting and design; and all facets of environmental compliance. In addition to solid waste, Mr. Doerr has directed environmental consulting projects, including air permitting and compliance, traditional civil engineering, alternative energy planning and implementation, and environmental investigation and remediation.

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Paul Mandeville
Senior Vice President/Office Director
O. (571) 353-2015

Paul Mandeville, PE, is a Senior Vice President of SCS Engineers and the director of our Reston, Virginia, office. Mr. Mandeville is responsible for directing the firm’s projects in the Mid-Atlantic region.

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    • Paul Mandeville, PE, is a Senior Vice President of SCS Engineers and the office director of our Reston, Virginia office. Mr. Mandeville is responsible for directing the firm’s projects in the Mid-Atlantic region.
      Practice Areas
      Since joining SCS in 1987, he has completed solid waste, storage tank, and other environmental service type projects. His more than 30 years of diversified experience in civil and geotechnical engineering includes design and management of large, complex projects for the private sector, local governments, and the federal government.
      Mr. Mandeville is a Registered Professional Engineer in Virginia, Maryland, the District of Columbia and South Carolina. He is also a Class II Waste Management Facility Operator in Virginia and a Certified Value Engineer. Additionally, he is a member of the Solid Waste Association of North America, the National Society of Professional Engineers and the Virginia Society of Professional Engineers.

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Gregory Helland
Vice President/Office Director
O. (425) 289-5446

Mr. Helland is a Vice President and serves as the Northwest Office Director. His technical experience includes management and project experience related to site assessment, RI/FS, environmental monitoring and data management, hazardous waste characterization, regulatory compliance, remediation and management, Brownfields, permitting, NEPA/SEPA, and human health and ecological risk assessment.

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    • Mr. Helland originally joined SCS in 1986. He is a vice president and serves as the Northwest Director of Operations. His technical experience includes management and project experience related to site assessment, RI/FS, environmental monitoring and data management, hazardous waste characterization, regulatory compliance, remediation and management, Brownfields, permitting, NEPA/SEPA, and human health and ecological risk assessment. Mr. Helland has also served as project director for stormwater compliance, UST management and closure, spill prevention planning, and hazardous waste management/minimization projects.
      As Northwest office director, Mr. Helland is ultimately responsible for ensuring that all contracts and scopes of work are properly executed, and that clients are provided with the highest quality data and deliverables. He ensures that regular internal project reviews are completed, that clients are kept apprised of progress and any changes, and that the clients’ expectations are satisfied.

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Mark Huber
Vice President/Office Director
O. (608) 216-7376

Mr. Huber is a Vice President and one of our National Experts in Electric Utilities. He has nearly 25 years of consulting experience in civil and environmental engineering, and specializes in urban redevelopment projects with a technical expertise in brownfield redevelopment, civil site design, and stormwater management.

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    • Mr. Huber is a Vice President and one of our National Experts in Electric Utilities. He has nearly 25 years of consulting experience in civil and environmental engineering. He specializes in urban redevelopment projects with a technical expertise in brownfield redevelopment, civil site design, liquids management, and stormwater management. With a dual background in civil and environmental engineering, Mark is able to take urban redevelopment projects from initial site assessment through construction. Mark is adept at explaining complex issues in easy to understand language. His experience working on a variety of complex urban projects allows him to quickly identify key issues and develop smart, simple solutions that save clients time and money. Mark is an excellent communicator, which helps him bridge the gap between client goals and regulatory requirements. Mark is always excited about helping clients in creative ways with responsive customer service.

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Thomas Rappolt
Vice President/Office Director
O. (760) 744-9611

Tom Rappolt, QEP, is an Office Director and Vice President of SCS Tracer Environmental and SCS Engineers. He is also a Senior Air Quality Meteorologist, Project Director, and SCS’s National Expert on Odor and Tracer Gas Studies.

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    • Tom Rappolt, QED, is a an Office Director and Vice President of SCS Tracer Environmental and SCS Engineers, a Senior Air Quality Meteorologist, Project Director, and SCS’s National Expert on Odor and Tracer Gas Studies. He has over 40 years of program management and technical experience in air quality compliance and pollutant dispersion and air measurement programs. He is considered an expert in atmospheric dispersion and transport of airborne pollutants, particularly in the area of complex terrain, including overwater/coastal meteorological regimes, as well as inter and intra building processes.
      Mr. Rappolt he has designed and implemented over 40 atmospheric monitoring networks and comprehensive field measurement programs involving toxic chemicals and molds, volatile and semi-volatile organic compounds, metals, odorous compounds, criteria pollutants, and other targeted compounds of interest including chemical and biological warfare agents. Many of these measurement studies required support monitoring of local meteorological parameters, including upper atmospheric data using an array of direct probe and remote sensing devices. Mr. Rappolt has served as an expert witness in the area of meteorology, atmospheric dispersion, and odor impacts on numerous legal cases, hearing boards, and programs which have regulatory significance.
      Due to the ongoing threat of terrorism with the possible use of biological, chemical, and nuclear agents, Mr. Rappolt has led the effort within SCS to apply his monitoring and dispersion expertise toward conducting programs related to homeland defense. These programs have included infiltrations studies on selected buildings using tracer science as well as studying dispersion in extreme urban environments to validate crisis management models.
      Mr. Rappolt has applied his technical knowledge of pollutant movement and formation in the atmosphere to help assess and mitigate industrial odor issues. He has developed a method to assess a specific facility’s odor footprint and how that footprint affects compliance to nuisance regulations. This method, which incorporates onsite monitoring, modeling and surveys, has been very effective in isolating cost effective mitigations to resolve odor issues. This approach has been successfully utilized at manufacturing facilities, wastewater treatment plants, landfills and composting operations.
      Mr. Rappolt has been active in participating with state and local regulators regarding the formulation of greenhouse gas (GHG) regulations. As a stakeholder representative for industry, Mr. Rappolt is a member of several early action committees for the California Air Resources Board (CARB) regarding the implementation of AB32. In this capacity, Mr. Rappolt has provided testimony before the Air Resources Board regarding the severity of impacts these regulations could have on California businesses. Mr. Rappolt also serves on the Industrial Environmental Association’s Air Quality Committee which is active in assessing compliance strategies for industries subject to AB32 based regulations.

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Kevin Yard
Vice President/Office Director
O. (817) 571-2288

Mr. Yard’s 30 plus years of engineering experience has encompassed a broad range of projects including feasibility studies, permitting projects, conceptual designs, construction plans and specifications, construction-related services, and operations consulting. He is also the Office Director of all SCS locations in Texas.

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    • Mr. Yard’s 30 plus years of engineering experience has encompassed a broad range of projects including feasibility studies, permitting projects, conceptual designs, construction plans and specifications, construction-related services, and operations consulting. He has served as engineer-of-record in the design and permitting various waste management facilities, including new landfills, landfill expansions, transfer stations, composting facilities, landfill gas (LFG) recovery/control plants, landfill closures, and material recovery facilities. In addition, he has conducted landfill operations courses and has made significant contributions to numerous operating facilities. In particular, through completing numerous feasibility studies and related financial analyses, he has assisted clients in assessing financial returns on various solid waste projects across a broad range of investment values and geographic locations.
      Having worked in numerous states, he has developed considerable expertise in implementing the solid waste, air quality, and stormwater rules under the jurisdiction of various state agencies. Mr. Yard is a registered professional engineer in six states. Mr. Yard has authored numerous technical papers and has presented expert testimony before legislative committees, district court and at numerous permit hearings. In addition, he formerly served as the Director of the Landfill Management Technical Division of the Solid Waste Association of North America (SWANA).

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Michelle Leonard
Vice President/Project Director
O. (626) 792-9593

Michelle Leonard is a Vice President of SCS Engineers and our National Expert in Solid Waste Planning & Recycling and Sustainability. She has over 30 years of experience in environmental consulting and project management, with emphasis in Sustainable Materials Management, including solid waste management planning and facilities.

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    • Michelle Leonard is a Vice President of SCS Engineers and our National Expert in Solid Waste Planning & Recycling and Sustainability. She has over 30 years of experience in sustainable materials management, including environmental consulting and project management with an emphasis on solid waste management planning and facilities. She has assisted public and private sector clients in the preparation of solid waste management plans; designed and implemented waste reduction, recycling, and reuse programs; and evaluated existing programs to identify opportunities to reduce, reuse, and recycle solid waste. Ms. Leonard has prepared plans and permits for transfer stations, material recovery facilities, and drop-off and buy-back centers. As part of these projects, she has completed 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 presented 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 Immediate 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.

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Robert Isenberg
Senior Vice President/Project Director
O. (571) 353-2013

Bob Isenberg, PE, PG, is a Senior Vice President of SCS Engineers and our National Expert on Geotechnical, and Landfill Design and Construction Quality Assurance.

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    • Bob Isenberg, PE, PG, is a Senior Vice President of SCS Engineers and our National Expert on Geotechnical, and on Landfill Design and Construction Quality Assurance.
      Mr. Isenberg has nearly 40 years of consulting experience in geotechnical and civil engineering projects involving design, analysis, testing, permitting, construction, remediation and repair of solid waste facilities, retaining structures including dams, mine tailing basins, earthen embankments and reservoirs, buildings including power plants, commercial and residential housing and studies of soil and groundwater contamination.
      He possesses extensive experience with design of bottom liner and leachate collection systems, final covers, subsurface investigation, redevelopment and remediation of older municipal and private waste landfills, and studies of soil and groundwater contamination.

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Floyd Cotter
Vice President/Project Director
O. (913) 749-0726

Mr. Cotter is a Vice President and Project Director for SCS Engineers. He specializes in solid waste management projects. His project work involves all areas of solid waste management including planning, permitting, transportation, landfill design, construction, and monitoring. Mr. Cotter is also experienced in general civil engineering, construction oversight, environmental site assessments, closure and post-closure plans, and permit and contract document preparation.

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    • Mr. Cotter specializes in solid waste management projects. His project work involves all areas of solid waste management including planning, permitting, transportation, landfill design, construction, and monitoring. Mr. Cotter is also experienced in general civil engineering, construction oversight, environmental site assessments, closure and post-closure plans, and permit and contract document preparation. In addition, Mr. Cotter has experience with environmental due diligence consulting as it relates to landfill acquisitions and other real estate purchases.

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Heather Waldenmayer
Vice President/Controller
O. (562) 426-9544

Ms. Waldenmayer is a Vice President of SCS and our Controller.

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    • Ms. Waldenmayer is a Vice President of SCS and our Controller.

SCS Address

Corporate Headquarters

3900 Kilroy Airport Way Ste 100
Long Beach, CA 90806-6816
1 (562) 426-9544 | West Coast

Telephone

1 (800) 767-4727 | East Coast
1 (562) 427-0805 | FAX
[email protected]

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