Stephanie Taylor has nearly a decade of both regulatory and consulting experience, including air permitting and compliance, ambient air dispersion modeling analysis, New Source Performance Standard (NSPS) and National Emission Standards for Hazardous Air Pollutant (NESHAP) compliance, environmental auditing and reporting, greenhouse gas reporting, annual emission inventories, and groundwater monitoring reporting. She served as the Chair for the Air & Waste Management Association – Midwest Section until April 2021.
Stephanie Taylor has nearly a decade of both regulatory and consulting experience, including air permitting and compliance, ambient air dispersion modeling analysis, New Source Performance Standard (NSPS) and National Emission Standards for Hazardous Air Pollutant (NESHAP) compliance, environmental auditing and reporting, greenhouse gas reporting, annual emission inventories, and groundwater monitoring reporting. She served as the Chair for the Air & Waste Management Association – Midwest Section until April 2021.
Jennifer Taylor, PE, is experienced with many different types of projects, including landfills, wetlands, environmental site assessments, research, report writing, site design, rail yard development, underground stormwater drainage system design, ponds, erosion controls and other environmental solutions.
Jennifer Taylor, PE, has a diverse background and experience with many different types of projects including landfills, wetlands, environmental site assessments, research, report writing, site design, rail yard development, underground stormwater drainage system design, ponds, erosion controls and other environmental solutions.
Prior to joining SCS Engineers, Jennifer led a team of nine civil engineers and designers on a $4 billion project that included all aspects of site design. She built this team which produced creative quality designs under very demanding timelines. This team extended to the Mumbai, India, office, where Jennifer traveled to train and unify the groups and fostered clear communication.
Jennifer also served as the Stormwater Management Coordinator for several years for a municipality where she was hired following an audit and consent decree by the EPA. She led them to compliance with their NPDES permit and the city received no fines from the EPA. The Stormwater Program she established was used as an example for other Phase II Municipalities.
Kerim Temel, PE, is a Project Director and one of our National Experts in Liquids Management. He is experienced in municipal and industrial wastewater, leachate treatment, groundwater remediation, and Operations and Maintenance (O&M). He has significant experience treating complex wastewater such as those from landfill leachate (including removal of Perfluoroalkyl Substances [PFAS]), pharmaceuticals, and chemicals industries. His expertise includes alternative evaluations, planning and design, troubleshooting, characterization, treatability testing, confirmation testing, system evaluations, startup and training, and process design.
Kerim Temel, PE, is a Project Director and one of our National Experts in Liquids Management. He is experienced in municipal and industrial wastewater, leachate treatment, groundwater remediation, and Operations and Maintenance (O&M). He has significant experience treating complex wastewater such as those from landfill leachate (including removal of Perfluoroalkyl Substances [PFAS]), pharmaceuticals, and chemicals industries. His expertise includes alternative evaluations, planning and design, troubleshooting, characterization, treatability testing, confirmation testing, system evaluations, startup and training, and process design.
Additionally, he has managed numerous biological and physical/chemical wastewater treatability and process design projects for pharmaceuticals and landfills.
Contact Karim at (757) 466-3361 or
Madison Thompson is a Project Professional in our Madison, Wisconsin office, specializing in landfill gas (LFG). She provides support services including NSPS regulations, design, Tier 2 landfill gas sampling, Greenhouse Gas reporting, Title V air permitting, annual and semi-annual compliance reporting, and construction quality assurance.
Madison Thompson is a Project Professional in our Madison, Wisconsin office, specializing in landfill gas (LFG). She provides support services including NSPS regulations, design, Tier 2 landfill gas sampling, Greenhouse Gas reporting, Title V air permitting, annual and semi-annual compliance reporting, and construction quality assurance.
Ms. Thompson also served as the Assistant Project Manager for the Manatee County, Florida Debris Monitoring Services Contract. Her educational background focused on water treatment design processes.
James Thompson is a Project Manager and one of our National Experts in Oil & Gas. He is experienced with hydrogen production and fueling facilities, oil and gas production plans, Spill Prevention and Countermeasure Plans (SPCC), Underground Injection Control (UIC), midstream pipeline projects, miscellaneous commercial projects, cannabis cultivation and processing facilities, as well as surface and groundwater compliance. He is a permitting specialist and provides land use planning, air and water quality analysis, environmental review, geologic consulting, mapping, and technical writing for a broad variety of proposed or operating industrial and commercial facilities.
James Thompson is a Project Manager and one of our National Experts in Oil & Gas. He is experienced with hydrogen production and fueling facilities, oil and gas production plans, Spill Prevention and Countermeasure Plans (SPCC), Underground Injection Control (UIC), midstream pipeline projects, miscellaneous commercial projects, cannabis cultivation and processing facilities, as well as surface and groundwater compliance. He is a permitting specialist and provides land use planning, air and water quality analysis, environmental review, geologic consulting, mapping, and technical writing for a broad variety of proposed or operating industrial and commercial facilities.
Mr. Thompson previously worked as a production geologist for an energy company and was responsible for maintaining and enhancing oil production in an oilfield in California. His responsibilities included developing 3D subsurface models, structure contour maps, isopach maps, cross sections, and geophysical models for reservoir characterization. He also evaluated geophysical logs during drilling operations and determined well completions. Additional experience includes creating net reservoir thickness maps, property maps, and production maps.
As a well site geologist in Kansas, Mr. Thompson was responsible for examining rock cuttings during drilling of production wells, including creating mud-logs and characterizing reservoirs. He also mapped potential drill sites for production wells.
Contact James at (661) 606-6001 or
Ray Tierney, PG, CEEP, is a Vice President of SCS Engineers. He is a Professional Geologist with over 30 years of experience in environmental and sustainability engineering and has helped a wide range of organizations control and reduce their legacy environmental impacts and liabilities, lower their costs, obtain grants and permits to expand, and implement cost-saving practices.
Ray Tierney, PG, CEEP, is a Vice President of SCS Engineers. He has 30 years of experience in environmental and sustainability engineering and has helped a wide range of organizations control and reduce their legacy environmental impacts and liabilities, lower their costs, obtain grants and permits to expand, and implement cost-saving practices. He has given talks around the country on sustainability. He holds a Master’s Degree in Water Resources Management from the University of Wisconsin and a Bachelor’s Degree in Geology and Geophysics from Boston College. He is a Wisconsin Professional Geologist, a Certified Energy Efficiency Professional, and a Certified Ground Water Professional.
Contact Ray at 608-216-7332 or
Jarrod Timmons is experienced in landfill engineering, environmental engineering, civil engineering, and regulatory compliance. He is proficient in landfill design using AutoCAD Civil 3D, stormwater modeling, preparing stormwater calculations, and geosynthetics. His experience includes landfill gas system design, landfill cell and closure design, construction quality assurance (CQA), quality control, and environmental compliance.
Jarrod Timmons is experienced in landfill engineering, environmental engineering, civil engineering, and regulatory compliance. He is proficient in landfill design using AutoCAD Civil 3D, stormwater modeling, preparing stormwater calculations, and geosynthetics. His experience includes landfill gas system design, landfill cell and closure design, construction quality assurance (CQA), quality control, and environmental compliance.
Adrienne Tober is a Senior Project Professional in SCS’s Tracer division. She has a Bachelor’s degree in Chemical Engineering.
Stephen Townsend provides Title V and other compliance reporting services for landfills throughout Florida. He has a Master’s Degree in Environmental Engineering.
Renee Trenshaw, PE, is experienced in the environmental and civil engineering fields. Her project experience includes landfill design and permitting, landfill and landfill gas well construction, storm water and environmental plans, and air compliance.
Patrick Triscari is an expert on renewable natural gas (RNG) with more than a decade of experience. He is experienced in all phases of project development, engineering, construction, and commissioning at waste to energy facilities in Michigan, Indiana, Rhode Island and Utah, and works to produce renewable energy from waste materials. He is currently developing a RNG facility to be located at the Ridge Landfill in Chatham-Kent, Ontario, Canada.
Patrick Triscari is an expert on renewable natural gas (RNG) with more than a decade of experience. He is experienced in all phases of project development, engineering, construction, and commissioning at waste to energy facilities in Michigan, Indiana, Rhode Island and Utah, and works to produce renewable energy from waste materials. He is currently developing a RNG facility to be located at the Ridge Landfill in Chatham-Kent, Ontario, Canada.
Sergio Valenzuela is an Air Quality Monitoring Technician for SCS’s Tracer division. With expertise in various types of air quality instrumentation, he performs operation and maintenance of SCS’s expansive list of air monitoring projects . He is also knowledgeable about local, state and federal regulations governing the collection of air monitoring data and quality control requirements. Mr. Valenzuela performs the maintenance, adjustments and/or operations of ambient particle monitors.
Sergio Valenzuela is an Air Quality Monitoring Technician for SCS’s Tracer division. With expertise in various types of air quality instrumentation, he performs operation and maintenance of SCS’s expansive list of air monitoring projects . He is also knowledgeable about local, state and federal regulations governing the collection of air monitoring data and quality control requirements. Mr. Valenzuela performs the maintenance, adjustments and/or operations of ambient particle monitors.
Mr. Valenzuela currently manages the field requirements for the Imperial Irrigation District’s (IID) Salton Sea Air Monitoring Project, which consist of a network of ambient air and meteorological stations, and he is a key respondent to the various IID Field-Scale Pilot studies.
Gary Vancil is a Project Director and one of our National Experts on Mining. He is a geologist with decades of experience in deep well injection and carbon sequestration, and mining surface and subsurface investigations, including coal mining operations. His geological experience includes mine planning, mine management, hazard identification, mapping, drilling, permitting, refuse disposal, quality control and electrical/mechanical troubleshooting. His core competencies include due diligence, AutoCAD/Carlson, reserve analysis, drilling/logging, environmental compliance, permitting, underground mapping, mine planning, and impoundments. He has a Master of Science degree in Geology.
Gary Vancil is a Project Director and one of our National Experts on Mining. He is a geologist with decades of experience in deep well injection and carbon sequestration, and mining surface and subsurface investigations, including coal mining operations. His geological experience includes mine planning, mine management, hazard identification, mapping, drilling, permitting, refuse disposal, quality control and electrical/mechanical troubleshooting. His core competencies include due diligence , AutoCAD/Carlson, reserve analysis, drilling/logging, environmental compliance, permitting, underground mapping, mine planning, and impoundments. He has a Master of Science degree in Geology.
Contact Gary at (618) 841-2824 or
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.
Contact Bob at 562-426-9544 or
Nicholas (Niko) Villanueva, PE, provides engineering and drafting support for environmental and waste management solutions, including municipal solid waste landfills, coal combustion residual landfills, and composting facilities for compliance with local, state, and federal regulatory agencies. He performs engineering modeling and analyses for various landfill systems such as leachate and gas collection and control systems, leachate generation analyses, foundation analysis, pipe strength calculations, bearing capacity calculations, and storm water management. He is a Professional Engineer licensed in Illinois.
Nicholas (Niko) Villanueva, PE, provides engineering and drafting support for environmental and waste management solutions, including municipal solid waste landfills, coal combustion residual landfills, and composting facilities for compliance with local, state, and federal regulatory agencies. He is a Professional Engineer licensed in Illinois.
He performs engineering modeling and analyses for various landfill systems such as leachate and gas collection and control systems, leachate generation analyses, foundation analysis, pipe strength calculations, bearing capacity calculations, and storm water management. He also develops cost estimates and material quantities for construction and engineering projects.
Additionally, Mr. Villanueva performs field technician duties including CQA officer tasks and responsibilities, and field monitoring for landfill bottom liner systems, final cover systems, landfill gas management systems, leachate management systems, and groundwater sampling.
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.
