Marta VanDussen, EIT, has extensive background in environmental engineering. She has experience in solid waste regulatory compliance and management, Clean Air Act permitting, environmental data analysis and management, assessment and remediation, projects cost management and finance.
Marta VanDussen, EIT, has extensive background in environmental engineering. She has experience in solid waste regulatory compliance and management, Clean Air Act permitting, environmental data analysis and management, assessment and remediation, projects cost management and finance. Ms. VanDussen has performed air quality services, including preparation of permit applications, evaluation of permitting requirements and exemptions, performance of compliance assessments, preparation of emission inventories, annual compliance certifications, and semiannual reports. Ms. VanDussen performed air dispersion modeling using AERMOD View software by applying applicable state modeling requirements. Her practice encompasses environmental compliance and reporting for small and Title V, both publicly and privately owned landfills.
Keith VanGennip is a Project Director with over 30 years of experience designing, permitting, and construction of solid waste facilities, water distribution systems, sewer collection systems, subdivisions, commercial and residential structures, FDOT, FDEP and SFWMD projects. He also has significant experience in construction cost estimating, proposal preparation, construction scheduling, bid document preparation, environmental feasibility studies, preparation of specifications and CQA plans, CQA report preparation, review conformance testing, leachate recirculation pilot test planning and implementation, remedial action plan preparation, quantity takeoff, construction material procurement, and volumetric analysis.
Keith VanGennip is a Project Director with over 30 years of experience designing, permitting, and construction of solid waste facilities, water distribution systems, sewer collection systems, subdivisions, commercial and residential structures, FDOT, FDEP and SFWMD projects. He also has significant experience in construction cost estimating, proposal preparation, construction scheduling, bid document preparation, environmental feasibility studies, preparation of specifications and CQA plans, CQA report preparation, review conformance testing, leachate recirculation pilot test planning and implementation, remedial action plan preparation, quantity takeoff, construction material procurement, and volumetric analysis.
Emily Vasquez has experience working on a wide variety of environmental compliance and remediation projects. Her experience includes construction oversight, subsurface soil characterization, soil, surface water and groundwater monitoring, groundwater remediation system operation and maintenance, well installation management, preparing reports, including tabular and graphical presentation of environmental data, as well as, preparing groundwater contour maps and borehole logs.
Emily Vasquez has experience working on a wide variety of environmental compliance and remediation projects. Her experience includes construction oversight, subsurface soil characterization, soil, surface water and groundwater monitoring, groundwater remediation system operation and maintenance, well installation management, preparing reports, including tabular and graphical presentation of environmental data, as well as, preparing groundwater contour maps and borehole logs.
Dan Venchiarutti, RG, is a Project Director in our Northwest region. He has nearly 30 years of experience in the design and management of environmental investigations, and the implementation of soil, soil vapor, sediment and groundwater sampling programs.
Dan Venchiarutti, RG, is a Project Director in our Northwest region. He has nearly 30 years of experience in the design and management of environmental investigations, and the implementation of soil, soil vapor, sediment and groundwater sampling programs. He also has extensive experience with the characterization of site hydrogeology, underground tank removal, storm water management, and hazardous waste minimization and spill plan preparation.
He has acted as the senior environmental scientist on three recent hazardous waste investigation projects under multiple concurrent task orders that included hazardous waste compliance and industrial discharge audits for facilities ranging from small businesses to large military bases.
Mr. Venchiarutti’s primary focus is on soil, sediment and surface water hazardous waste investigations, and groundwater monitoring projects. He is experienced with modeling and tracking contaminant plumes through a variety of media, and evaluating their impacts on human health and the environment.
Alexis Vento coordinates and performs site assessment activities, including groundwater sampling and monitoring, gas sampling, solid waste management, and soil sampling and monitoring. His experience includes gas management systems, landfill redevelopment, gas management system construction oversight, groundwater monitoring and remediation systems, and soil assessment.
Alexis Vento coordinates and performs site assessment activities, including groundwater sampling and monitoring, gas sampling, solid waste management, and soil sampling and monitoring. His experience includes gas management systems, landfill redevelopment, gas management system construction oversight, groundwater monitoring and remediation systems, and soil assessment. Projects include agricultural and landfill redevelopment, solid waste assessment, groundwater remediation operation and maintenance, well installation, and preparing reports including tabular and graphical representation of environmental data.
Dr. Claudio Vera Nunez has two decades of experience managing environmental site assessment and remediation projects from initial due diligence through site closure. He has managed projects for commercial, government and industrial clients in the US and Latin America. He has a Masters degree in Environmental Engineering and Sciences from the Colorado School of Mines in Golden.
Dr. Claudio Vera Nunez has two decades of experience managing environmental site assessment and remediation projects from initial due diligence through site closure. He has managed projects for commercial, government and industrial clients in the US and Latin America. He has a Masters degree in Environmental Engineering and Sciences from the Colorado School of Mines in Golden.
Mateja Vidovic Klanac is a Senior Project Professional with experience in the environmental engineering field, currently focusing on solid waste management. Her experience in solid waste includes involvement in a diverse range of landfill design projects including lateral expansions, vertical expansions, permitting, stormwater management systems, geotechnical evaluations, modeling, and field experience in observing and documenting construction projects and verifying adherence to plans, specifications, and construction quality assurance plans. Mateja has Master’s Degrees in Environmental Engineering and Civil Engineering.
Mateja Vidovic Klanac is a Senior Project Professional with experience in the environmental engineering field, currently focusing on solid waste management. Her experience in solid waste includes involvement in a diverse range of landfill design projects including lateral expansions, vertical expansions, permitting, stormwater management systems, geotechnical evaluations, modeling, and field experience in observing and documenting construction projects and verifying adherence to plans, specifications, and construction quality assurance plans. Mateja has Master’s Degrees in Environmental Engineering and Civil Engineering.
Tyler Viers, EIT, is a Project Professional for our Energy Division.
Bob Viers, P.E. is a Senior Vice President and a Project Director for our SCS Energy division. He is the Lead Design Engineer for many types of energy projects and supervises the design or design/construction of almost all of SCS Energy’s landfill gas power generation projects and renewable natural gas projects.
Bob Viers, P.E. is a Senior Vice President and a Project Director for our SCS Energy division. He is the Lead Design Engineer for many types of energy projects and supervises the design or design/construction of almost all of SCS Energy’s landfill gas power generation projects and renewable natural gas projects.
His experience includes designing, manufacturing, and maintaining customized mechanical skids and mechanical packages for a wide range of industries. His responsibilities include review of proposals from bidders and subcontractor’s submittals for compliance with project specifications, codes and regulations, and company standards; equipment inspections during fabrication; management of personnel; preparing project budgets; equipment commissioning; and technical support and specifications. Fabricated packages use positive displacement blowers, sliding vane compressors, multi-stage centrifugal blowers, pumps, liquid ring vacuum pumps, and other rotating equipment used in the environmental, power, water and wastewater treatment, flash-freezing, and commercial sectors. Bob is a Professional Engineer licensed in dozens of states.
Art Violenta has over two decades of professional engineering design and construction experience. He specializes in planning, surveying, design, and structural detailing of landfills; the preparation of road improvement plans; and road construction.
Art Violenta has over two decades of professional engineering design and construction experience. He specializes in planning, surveying, design, and structural detailing of landfills; the preparation of road improvement plans; and road construction. He is skilled in the use of graphics and design programs such as AutoCAD 3D Civil, Photoshop, Canvas, Corel Draw, and various Microsoft software programs. His is experienced in landfill gas (LFG) system design and construction quality assurance (CQA) grading and design at closed and active landfills.
Vidhya Viswanathan, PE, is a Senior Vice President with expertise in solid waste engineering, storm water, and water and sewer infrastructure design projects. She is the Director of Engineering of our Southwest Region where she leads our solid waste engineering operations in California, Arizona, Nevada, Utah, and New Mexico. She is a licensed Professional Engineer in California, Arizona, and Oklahoma. She is a licensed Professional Engineer in California, Arizona, and Oklahoma.
Ms. Viswanathan is a Senior Vice President with expertise in solid waste engineering, storm water, and water and sewer infrastructure design projects. She is the Director of Engineering of our Southwest Region where she leads our solid waste engineering operations in California, Arizona, Nevada, Utah, and New Mexico. Her experience includes preparation of grading and drainage plans, design of erosion control best management practices, preparation of inspection reports and technical specifications, and providing construction support services on a variety of municipal projects, including landfills. She is a licensed Professional Engineer in California, Arizona, and Oklahoma.
Her work includes design and installation of LFG collection systems, landfill de-watering systems, LFG Blower-Flare Station (BFS) planning and site civil design, and construction oversight for LFG-related projects. She also has experience performing analysis of airspace consumption and remaining life assessments using AutoCAD Civil 3D, and in estimation of closure and post-closure care costs for various landfills. She has designed 5-year operational fill and gas collection and control system (GCCS) sequence plans, and prepared Joint Technical Document (JTD) updates for various landfills in California.
Ms. Viswanathan is a strong client manager with excellent GCCS design, construction quality assurance (CQA), and construction skills. She has a thorough understanding of all aspects of fill operations, construction, and OM&M, and has been an integral part of several site operations teams since joining SCS in 2012
During her tenure as a municipal engineer, Ms. Viswanathan was involved in the permitting, design, and construction of a variety of municipal projects, including landfill expansion and liner installation. Since joining SCS, she has been involved in the preparation of feasibility studies, and the permitting, design, and construction of various landfill and landfill gas (LFG) projects.
David Walker is experienced in a variety of engineering and environmental projects involving landfill design, landfill gas collection and control system design, air permitting, regulatory compliance and reporting, construction quality assurance, brownfield redevelopment, and environmental sampling.
Jim Walsh, PE, BCEE, is the Chairman of the Board of SCS Engineers effective January 1, 2024. He served as our President and CEO for 22 years and is one of our National Experts on Elevated Temperature Landfills. He has worked at the forefront of sustainable solid waste management, sanitary landfills, and landfill gas (LFG) for more than 40 years. Mr. Walsh regularly serves as a Project Director and Reviewing Principal for SCS landfill and LFG projects. His project experience, coupled with his involvement in professional and industrial associations, has earned Mr. Walsh an international reputation in these specialty fields. He has authored numerous publications and technical support documents and presents regularly at environmental conferences.
Jim Walsh, PE, BCEE, is the Chairman of the Board of SCS Engineers effective January 1, 2024. He served as our President and CEO for 22 years and is one of our National Experts on Elevated Temperature Landfills. He has worked at the forefront of sustainable solid waste management, sanitary landfills, and landfill gas (LFG) for more than 40 years. Mr. Walsh regularly serves as a Project Director and Reviewing Principal for SCS landfill and LFG projects. His project experience, coupled with his involvement in professional and industrial associations, has earned Mr. Walsh an international reputation in these specialty fields. He has authored numerous publications and technical support documents and presents regularly at environmental conferences.
Practice Areas Have Included:
Leadership in Landfill Engineering. Over 40 years of professional experience on landfill projects. He served as Project Manager and primary author of the U.S. EPA landfill manual. He served 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 greenfield and landfill expansion permits with individual design capacities in excess of 25 million tons of solid waste.
Leadership in Landfill Gas. Over 40 years of professional experience on landfill gas (LFG) projects. Past Director of the leading LFG professional organization, the SWANA Landfill Gas Division. Received top award in landfill gas practice, the SWANA Landfill Gas Distinguished Service Award in 1997. He has served as Principal Investigator multiple landfill gas R&D projects for U.S. EPA, U.S. DOE, and Gas Research Institute. He has authored numerous publications and technical support documents in LFG. He has presented dozens of times on LFG at environmental conferences. 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 have included 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.
Leadership on Landfill Fire and Elevated Temperature Landfills. Principal investigator or chief engineer on over thirty dedicated landfill fire and elevated temperature landfill projects. He has provided guidance to landfill operators to avoid landfill fires. He has investigated landfill fires in-situ, and developed management and mitigation programs to address landfill fires and related events when they do occur. He has presented at environmental conferences on the subject of landfill fires. He served on the Ohio EPA Committee formed to address landfill fires and elevated temperature landfills in the state, and assisted in the development of the Ohio EPA Guidance Document on the subject.
Charles Warren, PE, is experienced in landfill engineering, solid waste facilities design, site development, and mine planning experience. He conducts solid waste permitting, stormwater management, facility design, mine closure, and design projects for municipal and private clients. Recent experience includes problem-solving for elevated temperature landfills.
Tyler Warren, EIT, is 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. Warren is a Federal Aviation Authority (FAA) certified commercial Unmanned Aerial Vehicle (UAV) pilot and provides aerial imaging and topographic mapping services for clients in the Midwest.
Tyler Warren, EIT, is 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. Warren is a Federal Aviation Authority (FAA) certified commercial Unmanned Aerial Vehicle (UAV) pilot and provides aerial imaging and topographic mapping services for clients in the Midwest.
Ms. Tyler Watkins is experienced in environmental remediation and compliance. She is responsible for Phase I and II Environmental Site Assessments (ESAs), multimedia sampling and reporting (soil, groundwater, surface water, sediment, soil vapor, air), as well as compliance monitoring, permitting, document preparation, and proposals. She works directly with our local clients and regulatory agencies, ensuring timeliness of reports and compliance.
Tyler Watkins is experienced in environmental remediation and compliance. She is responsible for Phase I and II Environmental Site Assessments (ESAs), multimedia sampling and reporting (soil, groundwater, surface water, sediment, soil vapor, air), as well as compliance monitoring, permitting, document preparation, and proposals. She works directly with our local clients and regulatory agencies, ensuring timeliness of reports and compliance.
Ms. Watkins’ previous experience includes field investigations and report production involving groundwater monitoring, Perfluorooctanoic acid (PFAS) sample collection, excavation events related to South Coast Air Quality Management District (SCAQMD) Rule 1466 monitoring, preparation of sampling plans for Phase II investigations, stormwater inspections and reporting, and related field activities. She has developed a conceptual site model to request closure for a service station site, and has overseen contractors in a variety of field activities, including Organochlorine pesticides (OCP) testing in school sites, aerially deposited lead surveys, and soil vapor monitoring. She has conducted site investigations related to federal and state hazardous waste; produced reports for review by oversight agencies such as the Regional Water Quality Control Board (RWQCB), CalTrans, and California Department of Toxic Substances Control (DTSC); prepared Phase I ESA reports; and logged and sampled soil using boring techniques that included sonic drilling, hand auger, and direct push equipment. She has also overseen Phase II projects, and coordinated the installation and abandonment of wells, including obtaining permits, contact with subcontractors, and field oversight. She also has expertise in soil vapor well installation and monitoring.
Liam Watson is a Vice President and our Director of Information Technology.
Lance Weaver has over two decades of experience in groundwater and stormwater sampling, and maintenance and repair of related equipment. In addition to his experience with asbestos and lead-based paint sampling, as well as sampling from soil and soil vapor extraction wells, he is experienced in the maintenance and repair of soil vapor extraction (SVE) systems, and monitoring groundwater and stormwater systems. Mr. Weaver is also experienced in Global Information System (GIS) mapping, source collection, database management, and digital and manual drafting.
Lance Weaver has over two decades of experience in groundwater and stormwater sampling, and maintenance and repair of related equipment. In addition to his experience with asbestos and lead-based paint sampling, as well as sampling from soil and soil vapor extraction wells, he is experienced in the maintenance and repair of soil vapor extraction (SVE) systems, and monitoring groundwater and stormwater systems. Mr. Weaver is also experienced in Global Information System (GIS) mapping, source collection, database management, and digital and manual drafting.
He is trained to operate and calibrate air and water monitoring equipment, including RAE PIDs, Foxboro FIDs, GEM landfill gas (LFG) detectors, RKI Eagle gas detectors, and Horiba and water quality meters (QED) and pumps.
Software experience includes AutoCAD, ARC/INFO, ARC/VIEW GIS, Windows 10 Professional, and UNIX.
Travis Weber’s main area of concentration is risk analysis. He is responsible for the documentation of Process Safety Management Programs (PSM), Risk Management Programs (RMP), and California Accidental Release Prevention (CalARP) Programs for facilities using regulated substances. This work includes preparing all necessary documentation for compliance with the PSM/RMP/CalARP regulation, and modeling the potential off-site consequences of potential releases, compliance audits, and other environmental study projects for municipal and private clients.
Travis Weber’s main area of concentration is risk analysis. He is responsible for the documentation of Process Safety Management Programs (PSM), Risk Management Programs (RMP), and California Accidental Release Prevention (CalARP) Programs for facilities using regulated substances. This work includes preparing all necessary documentation for compliance with the PSM/RMP/CalARP regulation, and modeling the potential off-site consequences of potential releases, compliance audits, and other environmental study projects for municipal and private clients.
Prior to joining SCS Engineers, Mr. Weber acquired experience in the oil and gas industry while working for an oil company in Pennsylvania. He implemented his knowledge of ESRI Geographic Information Systems to develop maps for project planning, legal correspondence, and engineering operations. He was also involved in the facilitation of permits, as well as correspondence with state and federal environmental protection agencies.
Anastasia Welch, PE, is the Business Unit Director for SCS Engineer’s Central Region, effective January 1, 2024. She is a Vice President and Project Director with nearly 25 years of experience in solid waste management and civil engineering. Her expertise centers on solid waste management, including landfill design and permitting, construction oversight, operational metrics, compliance, and long-term planning. She is a Professional Engineer licensed in Kansas, Missouri, Iowa, and North Dakota.
Anastasia Welch, PE, is the Business Unit Director for SCS Engineer’s Central Region, effective January 1, 2024. She is a Vice President and Project Director with nearly 25 years of experience in solid waste management and civil engineering. Her expertise centers on solid waste management, including landfill design and permitting, construction oversight, operational metrics, compliance, and long-term planning. She is a Professional Engineer licensed in Kansas, Missouri, Iowa, and North Dakota.
Her solid waste management experience includes groundwater monitoring, landfill design and permitting, construction oversight, air compliance issues, bioreactor studies, and alternative cover design. Although based in our Central Region, Ms. Welch leverages the experience of SCS personnel from across the company to meet our clients’ expectations and needs.
Denise Wessels, PE, is a Vice President of SCS Engineers, and a Project Director with our Landfill Engineering Group in the Reading, PA office. She has over two decades of experience in the waste management industry and environmental consulting, including landfill design, project management, regulatory compliance, permitting, environmental monitoring and studies, auditing, and budgeting.
Denise Wessels, PE, is a Vice President of SCS Engineers, and a Project Director with the Landfill Engineering Group in the Reading, PA office. She has over two decades of experience in the waste management industry and environmental consulting, including landfill design, project management, regulatory compliance, permitting, environmental monitoring and studies, auditing, and budgeting.
Stacie Whitmer is an Environmental Scientist and Project Manager with SCS Engineers. She has over seventeen years of experience in environmental consulting. Project experience includes site assessments, extent of contamination studies, landfill flare and gas monitoring systems, groundwater sampling and statistical analysis of groundwater data, regulatory compliance, and NPDES services.
Stacie Whitmer is an Environmental Scientist and Project Manager with SCS Engineers. She has over seventeen years of experience in environmental consulting. Project experience includes site assessments, extent of contamination studies, landfill flare and gas monitoring systems, groundwater sampling and statistical analysis of groundwater data, regulatory compliance, and NPDES services.
Ms. Whitmer has worked with several solid waste disposal facilities in Arkansas to help bring the Landfills into compliance with applicable Federal and State solid waste regulations. In particular, she has prepared several groundwater sampling and analysis plans, statistical and contingency plans, and explosive gas monitoring plans for several landfill sites.
Ms. Whitmer also has extensive experience in managing groundwater sampling, statistics utilizing Sanitas for GroundwaterTM and DumpstatTM statistical programs, reporting, and compliance associated with solid and hazardous waste landfills. In addition, she has performed many geologic, hydrogeologic, and compliance projects associated with solid and hazardous waste landfills.
Daniel Wiens is a project engineer with experience in the civil and environmental engineering fields. His project experience includes landfill design and permitting, environmental monitoring, landfill construction, agriculture biogas capture design and many other facets of environmental compliance.
Andrew Wilcox is experienced in the operation, monitoring and sampling of groundwater corrective action systems. His expertise includes groundwater sampling and environmental control system operation to meet Bay Area and Central Valley APCD, Title V, RWCQB, and state regulations and requirements.
Andrew Wilcox is experienced in the operation, monitoring and sampling of groundwater corrective action systems. His expertise includes groundwater sampling and environmental control system operation to meet Bay Area and Central Valley APCD, Title V, RWCQB, and state regulations and requirements.
Mr. Wilcox’s experience includes implementation of sampling plans and maintenance required to keep the systems operational and in compliance with various prescribed operating parameters and goals; performance, supervision, and/or assistance in required maintenance and repairs; and interaction with and/or management of subcontractors, laboratories, and vendors needed to assist with maintenance and sampling of the systems. He is also responsible for preparing daily field logs, recording field observations, preparing samples for shipment, and recommending actions to be taken.
Lisa Wilkinson, PE, is a Vice President and Project Manager at SCS with nearly three decades of experience in landfill engineering design, landfill gas (LFG), permitting, civil and environmental engineering, financial feasibility evaluations, storm water design, and construction quality assurance at landfills and solid waste facilities. Ms. Wilkinson also has experience working on foundation and structural design teams for various facilities, and she is proficient in the computerized analysis of engineering designs. She is a licensed Professional Engineer in New York, Pennsylvania, and Vermont.
Lisa Wilkinson, PE, is a Vice President and Project Manager at SCS with nearly three decades of experience in landfill engineering design, landfill gas (LFG), permitting, civil and environmental engineering, financial feasibility evaluations, storm water design, and construction quality assurance at landfills and solid waste facilities.
Ms. Wilkinson also has experience working on foundation and structural design teams for various facilities, and she is proficient in the computerized analysis of engineering designs.
She is a licensed Professional Engineer in New York, Pennsylvania, and Vermont, and has a Master’s Degree in Environmental Engineering.
