Staff

Carrie Ridley, PG,has over 20 years of regulatory experience in environmental and engineering geology. A former regulator, she oversaw the Kansas Class I, III and V underground injection control program (UIC), underground hydrocarbon storage program, and the water well program. She is also experience as a RCRA project manager and permit writer. Ms. Ridley is a Professional Geologist licensed in Kansas.

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    • Carrie Ridley, PG,has over 20 years of regulatory experience in environmental and engineering geology. A former regulator, she oversaw the Kansas Class I, III and V underground injection control program (UIC), underground hydrocarbon storage program, and the water well program. She is also experience as a RCRA project manager and permit writer. Ms. Ridley is a Professional Geologist licensed in Kansas.
      Early in her career Ms. Ridley worked on geotechnical drilling programs and transportation-related construction QA/QC. More recently she was Primary Investigator and Project Manager of a Department of Energy CCUS project and worked on projects related to Carbon Sequestration, Critical Minerals and Hydrogen Storage.

Ms. Ripplinger is SCS’s Director of Health & Safety and our National H&S Expert. She is a Board Certified Industrial Hygienist (CIH) and Safety Professional (CSP) with over three decades of experience providing occupational and environmental health and safety services, specializing in indoor air quality, asbestos, lead, mold, radon, and environmental site assessments. She is also a licensed asbestos building inspector, asbestos project monitor, project designer and management planner, and an EPA certified lead based paint inspector/risk assessor. Her experience includes providing industrial hygiene expertise for facility health and safety audits, process safety management audits, training, environmental evaluations involving mold, indoor air quality, asbestos, lead-based paint, lead worker exposure, OSHA worker exposure, ionizing and non-ionizing radiation surveys and exposure issues, and hazardous waste drum sampling for unknowns.

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    • Ms. Ripplinger is SCS’s Director of Health & Safety and our National H&S Expert. She is a Board Certified Industrial Hygienist (CIH) and Safety Professional (CSP) with three decades of experience providing occupational and environmental health and safety services, specializing in indoor air quality, asbestos, lead, mold, radon, and environmental site assessments. She is also a licensed asbestos building inspector, asbestos project monitor, project designer and management planner, and an EPA certified lead based paint inspector/risk assessor.
      Her experience includes providing industrial hygiene expertise for facility health and safety audits, process safety management audits, training, environmental evaluations involving mold, indoor air quality, asbestos, lead-based paint, lead worker exposure, OSHA worker exposure, ionizing and non-ionizing radiation surveys and exposure issues, and hazardous waste drum sampling for unknowns.
      Her industrial hygiene and environmental consulting experience includes designing and overseeing remediation projects involving mold, asbestos, hazardous waste (metals and solvents), hazardous materials, polychlorinated biphenyls (PCBs), mercury, and other Resource Conservation and Recovery Act (RCRA) heavy metals; conducting both area and personal industrial hygiene sampling for metals, solvents, vapors, diesel exhaust constituents, mold, asbestos, and lead; conducting environmental sampling of soil, air, and water; and providing expert witness testimony.
      Ms. Ripplinger has worked with regulators at local, state, and federal levels, and has performed hundreds of comprehensive industrial hygiene shop surveys, indoor air quality assessments, ionizing radiation, non-ionizing radiation, noise exposure studies, chemical exposure assessments, and workers’ compensation and environmental investigations. She has supported many government agencies, large commercial companies (mining, construction, gaming), and residential development companies across the state of Nevada, and other states.
      You can reach Sandy at 702-481-6978 or

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Jim Ritchie, PG, QSC, is a Vice President of SCS, with nearly four decades of environmental consulting and site investigation and restoration experience throughout the Western United States. He is registered Professional Geologist in California and Washington. He leads site investigation, remediation, and large-scale groundwater monitoring and reporting projects, and oversees the application of remedial approaches to a variety of site conditions, including supporting site closures. His experience includes performing Phase I Environmental Site Assessments (ESAs) and Phase II investigations; landfill and refinery investigations; comprehensive geologic and hydrogeologic studies, groundwater monitoring networks and programs; Conceptual Site Models (CSMs); risk assessment and vapor intrusion modeling; removal and disposal of non-hazardous and hazardous materials; evaluation, development, and implementation of on- and off-site remedial approaches for chemically affected soil vapor/indoor air, soil, and groundwater; water supply well and system siting and compliance; and Storm Water Pollution Prevention Plan (SWPPP) preparation and implementation. He leads SCS’s Environmental Services Group for Northern California.

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    • Jim Ritchie, PG, QSC, is a Vice President of SCS, with nearly four decades of environmental consulting and site investigation and restoration experience throughout the Western United States. He is registered Professional Geologist in California and Washington. He leads site investigation, remediation, and large-scale groundwater monitoring and reporting projects, and oversees the application of remedial approaches to a variety of site conditions, including supporting site closures. His experience includes performing Phase I Environmental Site Assessments (ESAs) and Phase II investigations; landfill and refinery investigations; comprehensive geologic and hydrogeologic studies, groundwater monitoring networks and programs; Conceptual Site Models (CSMs); risk assessment and vapor intrusion modeling; removal and disposal of non-hazardous and hazardous materials; evaluation, development, and implementation of on- and off-site remedial approaches for chemically affected soil vapor/indoor air, soil, and groundwater; water supply well and system siting and compliance; and Storm Water Pollution Prevention Plan (SWPPP) preparation and implementation.
      Mr. Ritchie has led numerous Brownfields site assessment and redevelopment projects, including Environmental Protection Agency (EPA) Brownfields Grant work, under Voluntary Cleanup Agreements (VCAs) with the Department of Toxic Substances Control (DTSC) and the Regional Water Quality Control Board (RWQCB), as well as under California Land Reuse and Revitalization Act (CLRRA). The Brownfields redevelopment projects have resulted successful revitalization of numerous chemically-impaired properties into commercial, mixed-use and residential developments.
      His technical experience covers a wide spectrum of environmental programs and projects, including property transaction and development, subsurface investigation, restoration and preservation, mediation and litigation, emergency response management, regulatory agency negotiation, and site closure. He has assisted clients in assessing the reliability and vulnerability (sustainability) of their water supplies and associated watersheds, and in developing recommendations for projects to protect the watershed habitat. He also has extensive experience with fixed price costing, contractual indemnifications, and environmental insurance products resulting in guaranteed price risk transfer solutions for impaired property cleanup and redevelopment.
      Mr. Richie leads the SCS Environmental Services Group for Northern California. He has established and grown offices for environmental consulting firms, and has performed business development, project acquisition, project funding, client management, staff hiring and mentoring, and technical, managerial, and profit and loss (P&L) duties in support of clients in the public and private sectors.

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Ms. Robb is a Vice President and Project Director with the Solid Waste Services Division in SCS’s Reston, VA and Taunton, MA, office. She also serves as SCS’s Groundwater Technical Advisor for the Mid-Atlantic region. Since joining SCS in 2001, her work has focused on providing support to over 50 landfills in the area of groundwater permitting, monitoring, and remediation services and other environmental service projects. She has represented clients in front of regulators and has provided litigation support to attorneys on behalf of her clients.

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Ms. Robertson has nearly 20 years experience as an environmental consultant. She conducts a wide range of projects, including environmental due diligence (Phase I, II and III ESAs), Indoor Air Quality and radon assessments, lead based paint and asbestos inspections, solid waste management programs, Brownfield/Voluntary Cleanup Program (BVCP) work under the Missouri Department of Natural Resources (MDNR), Illinois EPA Tiered Approach to Corrective Action (TACO), and Missouri Risk-Based Corrective Action (MRBCA) risk-assessments, and historic preservation projects under the Missouri Department of Economic Development.

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    • Ms. Robertson has nearly 20 years experience as an environmental consultant. She conducts a wide range of projects, including environmental due diligence (Phase I, II and III ESAs), Indoor Air Quality and radon assessments, lead based paint and asbestos inspections, solid waste management programs, Brownfield/Voluntary Cleanup Program (BVCP) work under the Missouri Department of Natural Resources (MDNR), Illinois EPA Tiered Approach to Corrective Action (TACO), and Missouri Risk-Based Corrective Action (MRBCA) risk-assessments, and historic preservation projects under the Missouri Department of Economic Development.
      She conducts remedial action/investigation/feasibility projects, due diligence and site investigations, environmental studies, and brownfields redevelopment. She provides oversight of vapor studies, solid waste management programs, landfill gas and leachate monitoring, mold, asbestos and lead based paint surveys.

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Mr. Rockhold has over 30 years of hydrogeology and environmental services experience. He provides project management, which includes supervising a diverse team of environmental professionals made up of geologists, hydrogeologists, engineers, chemists and biologists. Duties include marketing, client contact, work scope development, proposal preparation, cost estimation, regulatory negotiations, work assignments, technical support and review as well as project management and review.

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    • Mr. Rockhold has over 30 years of hydrogeology and environmental services experience. He provides project management, which includes supervising a diverse team of environmental professionals made up of geologists, hydrogeologists, engineers, chemists and biologists. Duties include marketing, client contact, work scope development, proposal preparation, cost estimation, regulatory negotiations, work assignments, technical support and review as well as project management and review.
      Mr. Rockhold’s technical responsibilities are primarily with geologic and hydrogeologic investigations, groundwater monitoring, remedial investigations, remedial design, solid waste services,. Duties include data acquisition and analysis; hydrogeologic modeling; soil and groundwater monitoring and site characterization; remedial design; and, landfill design and permitting,. Representative projects include utility waste impoundments and landfill; Subtitle D landfill design and permitting, environmental site assessments and audits, hydrogeologic and geotechnical site investigations, remedial design and implementation, discharge permitting and complex hydrogeological evaluations.

      Mr. Rockhold’s technical responsibilities are primarily with solid waste services, geologic and hydrogeologic investigations, remedial investigations, and remedial design. Duties include data acquisition and analysis; landfill design and permitting, hydrogeologic modeling; soil and groundwater characterization; and remedial design. Representative projects include Subtitle D landfill design and permitting, environmental site assessments and audits, hydrogeologic and geotechnical site investigations, remedial design and implementation, discharge permitting and complex hydrogeological evaluations.

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Ms. Rodriguez is a licensed Florida Professional Engineer with experience in environmental consulting including managing numerous small to large scale projects at all stages from initial site assessment through clean or conditional closure. She regularly prepares site assessment work plans and reports, remedial action plans for various cleanup technologies (soil excavation with and without dewatering, bioremediation, and air sparge/soil vapor extraction), bid specifications, construction completion reports, engineering control maintenance plans, and groundwater monitoring reports. She also oversees soil management implementation activities at former golf course, agricultural, and landfill sites for redevelopment into residential or commercial properties.

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    • Ms. Rodriguez is a licensed Florida Professional Engineer with experience in environmental consulting including managing numerous small to large scale projects at all stages from initial site assessment through clean or conditional closure. She regularly prepares site assessment work plans and reports, remedial action plans for various cleanup technologies (soil excavation with and without dewatering, bioremediation, and air sparge/soil vapor extraction), bid specifications, construction completion reports, engineering control maintenance plans, and groundwater monitoring reports. She also oversees soil management implementation activities at former golf course, agricultural, and landfill sites for redevelopment into residential or commercial properties.
      he has experience in environmental compliance work, including managing groundwater monitoring projects for multiple landfills and preparing monthly operating reports for deep injection wells at two landfills. She also has experience assessing and remediating sites with metals, pesticides, chlorinated solvents, and petroleum constituents in soil and/or groundwater. Ms. Rodriguez serves as one of two Quality Management Coordinators for the Southeast Region (Florida, Georgia, and Alabama).

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Ms. Rodriguez-Garcia has been an environmental scientist since 2012. She has experience with sustainable management of soil, contamination with heavy metals in soils and organic fertilizers, physical, chemical and biological characterization of soils, sample collection and documentation. She also has experience in the area of environmental site assessments.

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    • Ms. Rodriguez-Garcia has been an environmental scientist since 2012. She has experience with sustainable management of soil, contamination with heavy metals in soils and organic fertilizers, physical, chemical and biological characterization of soils, sample collection and documentation. She also has experience in the area of environmental site assessments.
      She has worked in projects for government agencies such as Florida Department of Transportation, Miami-Dade County Regulatory and Economic Resources, public utilities and private sector.

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Ms. Romanazzi is a Project Director experienced in solid waste management engineering and design.

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    • Ms. Romanazzi is a Project Director experienced in solid waste management engineering and design.

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Rani Romero, CEM, CIEC, is an Industrial Hygienist with over two decades of experience involving environmental health and safety in environmental due diligence, soil/groundwater investigations, and industrial hygiene, including asbestos, lead-based paint, biological (mold/bacteria) contamination, chemicals/metals, noise, and indoor environmental and air quality management. Ms. Romero is also a Certified Environmental Manager (CEM) and a Certified Indoor Environmental Consultant (CIEC), as well as a licensed asbestos abatement consultant and a USEPA accredited lead based paint inspector and risk assessor.

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    • Rani Romero, CEM, CIEC, is an Industrial Hygienist with over two decades of experience involving environmental health and safety in environmental due diligence, soil/groundwater investigations, and industrial hygiene, including asbestos, lead-based paint, biological (mold/bacteria) contamination, chemicals/metals, noise, and indoor environmental and air quality management. Ms. Romero is also a Certified Environmental Manager (CEM) and a Certified Indoor Environmental Consultant (CIEC), as well as a licensed asbestos abatement consultant and a USEPA accredited lead based paint inspector and risk assessor.
      She has significant experience investigating and managing environmental impacts to commercial, industrial, municipal, casino/resort, and residential properties. As an Industrial Hygienist, Ms. Romero manages a variety of projects for property owners, property managers, and financial institutions, from initial assessments to remediation and closure; and she works in conjunction with regulatory agencies and subcontractors. She also supports the legal community in biological contamination and construction defect matters.

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Mr. Romo provides SCS with over 25 years of experience in landfill gas (LFG) system operations monitoring, maintenance, migration control and recovery projects, and NSPS compliance. Field responsibilities have included routine testing, monitoring, and maintenance; repair of LFG collection headers, pneumatic pumps, extraction wells, and blower/flare facilities. Additionally, Mr. Romo has performed non-routine troubleshooting and repairs as well as emergency response services. He is experienced in all phases of landfill construction and drilling, installation of LFG systems, including flares.

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    • Mr. Romo provides SCS with over 25 years of experience in landfill gas (LFG) system operations monitoring, maintenance, migration control and recovery projects, and NSPS compliance. Field responsibilities have included routine testing, monitoring, and maintenance; repair of LFG collection headers, pneumatic pumps, extraction wells, and blower/flare facilities. Additionally, Mr. Romo has performed non-routine troubleshooting and repairs as well as emergency response services. He is experienced in all phases of landfill construction and drilling, installation of LFG systems, including flares.
      Mr. Romo has supervised projects in Los Angeles County, Orange County, Kern County, and San Diego County, and other areas of Nevada, Arizona, and Texas.
      Mr. Romo is routinely involved with work scope implementation, scheduling of field technicians, data review, interpretation, and assessment and coordination with the Engineers. Responsibilities have included, report preparation and review, Health & Safety Plan preparation and implementation, and providing support in regulatory compliance.

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Mr. Ross is an Environmental Project Professional with expertise in Quality Control, Environmental Site Assessments (ESAs), stormwater compliance, environmental sampling, and industrial hygiene. He is also the SCS technical lead for soil surveys and assessment projects, conducting soil fertility testing, vegetation monitoring, and providing vegetation and fertilizer recommendations. Mr. Ross is a certified asbestos and lead-based paint inspector in multiple Midwest states, and has 15 years of environmental experience in both the private and public sectors.

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    • Mr. Ross is an Environmental Project Professional with expertise in Quality Control, Environmental Site Assessments (ESAs), stormwater compliance, environmental sampling, and industrial hygiene. He is also the SCS technical lead for soil surveys and assessment projects, conducting soil fertility testing, vegetation monitoring, and providing vegetation and fertilizer recommendations. Mr. Ross is a certified asbestos and lead-based paint inspector in multiple Midwest states, and has 15 years of environmental experience in both the private and public sectors.

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Josh Roth
Josh Roth
Vice President/Project Director/National Expert on Clean Air Act-NSPS and Odor Management
Reston, VA
National Expert: Clean Air Act-NSPS
O. (571) 353-2024

Joshua Roth, PE, is a Vice President and Project Director with the Landfill Gas (LFG) Group in the SCS Reston, VA office. He is one of SCS’s National Experts on the Clean Air Act-NSPS. Josh has served on a number of LFG engineering projects involving LFG remediation system design, emissions inventories and air permitting, migration and odor control, ambient air sampling and reporting, LFG and CER due diligence projects, GHG emission mitigation and reporting, field sampling and assessments, and general emissions control projects.

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    • Joshua Roth, PE, is a Vice President and Project Director with the Landfill Gas (LFG) Group in the SCS Reston, VA office. He is one of SCS’s National Experts on the Clean Air Act-NSPS. Josh has served on a number of LFG engineering projects involving LFG remediation system design, emissions inventories and air permitting, migration and odor control, ambient air sampling and reporting, LFG and CER due diligence projects, GHG emission mitigation and reporting, field sampling and assessments, and general emissions control projects.
      Contact Josh at 571-353-2024 or

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Mr. Ruhle is a Project Manager for our OM&M Division in the San Francisco Bay Area.

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    • Mr. Ruhle is a Project Manager for our OM&M Division in the San Francisco Bay Area.

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Ms. Ruiz is experienced in landfill engineering, environmental engineering, civil engineering, and regulatory compliance projects. She conducts landfill gas system design, construction quality assurance (CQA) and quality control, and environmental compliance projects.

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    • Ms. Ruiz is experienced in landfill engineering, environmental engineering, civil engineering, and regulatory compliance projects. She conducts landfill gas system design, construction quality assurance (CQA) and quality control, and environmental compliance projects.

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Ms. Russo is a Business Manager for SCS Engineers’ Remote Monitoring and Control (RMC) group and the lead manager for SCS RMC’s drone services. During her years at SCS, she has transitioned from the SCS Field Services operations, monitoring, and maintenance (OM&M) administrative team to the SCS RMC team in 2013. She has managed the administration and installation of most of the 125 RMC west coast projects SCS has completed, to date. She is also a FAA licensed drone pilot and leads the development of SCS’s drone services, finding the latest applications that would benefit the clients in their efforts to optimize remote data collection and management.

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    • Ms. Russo is a Business Manager for SCS Engineers’ Remote Monitoring and Control (RMC) group and the lead manager for SCS RMC’s drone services. During her years at SCS, she has transitioned from the SCS Field Services operations, monitoring, and maintenance (OM&M) administrative team to the SCS RMC team in 2013. She has managed the administration and installation of most of the 125 RMC west coast projects SCS has completed, to date. She is also a FAA licensed drone pilot and leads the development of SCS’s drone services, finding the latest applications that would benefit the clients in their efforts to optimize remote data collection and management.
      She has managed and performed numerous aerial inspections nationwide and internationally for the purpose of thermal surveillance, methane leak detection, topographic mapping, stockpile calculations, aerial 2D images and 3D mapping. She is responsible for researching, interpreting, organizing, coordinating, and executing RMC Drone projects across the nation, and routinely schedules project staff; assigns work; tracks progress, budgets, materials, and prepares reports for clients and SCS management.

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Chad Russo, EIT, is experienced in environmental compliance, engineering consulting, project and construction management. Experience includes creating Remedial Action Plans for Florida DEP cleanup targets, design and closure evaluation reports for CCR landfills, geotechnical investigations for permitting landfill expansions, and construction quality assurance.

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    • Chad Russo, EIT, is experienced in environmental compliance, engineering consulting, project and construction management. Experience includes creating Remedial Action Plans for Florida DEP cleanup targets, design and closure evaluation reports for CCR landfills, geotechnical investigations for permitting landfill expansions, and construction quality assurance.

Fabian Saldivar, CAC, LI-RA, performs asbestos and lead-based paint inspections and oversight, Phase I Environmental Site Assessments (ESAs), hazardous material surveys, and other environmental projects. He performs indoor air quality (IAQ), water monitoring, and laboratory analyses, and has worked on projects related to soil compaction, soil sampling, concrete slump, percolation testing, and asphalt testing for land development.

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    • Fabian Saldivar, CAC, LI-RA, performs asbestos and lead-based paint inspections and oversight, Phase I Environmental Site Assessments (ESAs), hazardous material surveys, and other environmental projects. He performs indoor air quality (IAQ), water monitoring, and laboratory analyses, and has worked on projects related to soil compaction, soil sampling, concrete slump, percolation testing, and asphalt testing for land development.
      Project experience includes working as an environmental scientist to complete asbestos, lead, bacteria, and moisture assessments for single-family residences and commercial properties.
      He is fluent in English, Spanish, and French.

      Previous experience includes working as an environmental scientist who has led asbestos, lead, bacteria, and moisture assessments for single-family residence and commercial properties. He has worked on industrial hygiene projects, which include indoor air quality (IAQ) and water monitoring and abatement. He is familiar with the use of the Perkin Elmer’s Atomic Absorption Spectrometer when creating reports. In the field of geotechnical engineering, his experience includes managing soil compaction, collecting soil samples, handling concrete slump, administering percolation tests, and analyzing asphalt for land development.

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Mr. Salmons is a Project Manager for our Operations, Monitoring & Maintenance (OM&M) Division.

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    • Mr. Salmons is a Project Manager for our Operations, Monitoring & Maintenance (OM&M) Division.

Mr. Santos is a Project Manager with over 6 years of industry experience. His landfill gas (LFG) experience includes flare operations, flare maintenance, LFG collection and control system (GCCS) operation and maintenance, non-routine repair, and emergency call-out response. He has participated in many phases of project operations, including well field monitoring, environmental compliance, data analytics, LFG-to-energy (LFGE) coordination, blower station replacement/construction, flare source testing, well installations, LFG system upgrades, and liquids management.

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    • Mr. Santos is a Project Manager with over 6 years of industry experience. His landfill gas (LFG) experience includes flare operations, flare maintenance, LFG collection and control system (GCCS) operation and maintenance, non-routine repair, and emergency call-out response. He has participated in many phases of project operations, including well field monitoring, environmental compliance, data analytics, LFG-to-energy (LFGE) coordination, blower station replacement/construction, flare source testing, well installations, LFG system upgrades, and liquids management.
      Mr. Santos manages operations, maintenance, and monitoring (OM&M) of LFG and LFGE systems at multiple active and post-closure landfills in the San Diego area and other regions in Southern California. These services include on-site inspections, operation and maintenance of blower equipment; monitoring and adjustment of gas wells to maintain optimum extraction and compliance; and monitoring of perimeter probes to check for gas migration in accordance with state and federal laws and regulations. He routinely analyzes and evaluates data to confirm quality assurance standards, evaluates recovery process plant and collection system readings, and performs troubleshooting of plant and system processes and equipment.

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Mr. Saraf is a Senior Project Manager with over 5 years of experience in the design, permitting, and construction of landfills, waste processing facilities, leachate collection and management systems, landfill gas and collection systems, Title V NSPS reporting, and GHG reporting. He is a Professional Engineer licensed in Texas and Florida.

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    • Mr. Saraf is a Senior Project Manager with over 5 years of experience in the design, permitting, and construction of landfills, waste processing facilities, leachate collection and management systems, landfill gas and collection systems, Title V NSPS reporting, and GHG reporting. He is a Professional Engineer licensed in Texas and Florida.
      Additional experience includes preparing construction drawings for bottom liner systems of multiple MSW landfill cells, landfill closure projects, development of a 3,000-acre area green site, solid waste master plans, financial assurance estimates, operations and maintenance of active LFG and flaring system, landfill airspace calculations, preparing stormwater pollution prevention plans and national pollutant discharge elimination system permit application.

Bernadette Sarmiento, PE, is a licensed Professional Engineer with over 20 years of experience in the environmental and solid waste industry. She has an in-depth knowledge of landfill design and permitting, and environmental regulations, including solid waste, air, stormwater, and wastewater. Experience includes landfill engineering, construction, operation, permitting and compliance. She has extensive experience in construction/installation of clay and synthetic liner and final cover systems, gas collection systems, leachate management systems, surface water management systems, composting pads, groundwater monitoring wells and gas monitoring probes. She has authored, reviewed and/or submitted permit applications to renew or modify landfill operating permits, stormwater/NPDES permits, air/CAAPP permits, and wastewater discharge permits. She also has experience in landfill closure and certification for the 30-year post closure care.

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    • Bernadette Sarmiento, PE, is a licensed Professional Engineer with over 20 years of experience in the environmental and solid waste industry. She has an in-depth knowledge of landfill design and permitting, and environmental regulations, including solid waste, air, stormwater, and wastewater. Experience includes landfill engineering, construction, operation, permitting and compliance. She has extensive experience in construction/installation of clay and synthetic liner and final cover systems, gas collection systems, leachate management systems, surface water management systems, composting pads, groundwater monitoring wells and gas monitoring probes. She has authored, reviewed and/or submitted permit applications to renew or modify landfill operating permits, stormwater/NPDES permits, air/CAAPP permits, and wastewater discharge permits. She also has experience in landfill closure and certification for the 30-year post closure care.
      Ms. Sarmiento has also provided technical support to compost facilities, transfer stations and hauling operations. She has developed site-specific plans like Spill Prevention, Control and Countermeasure (SPCC) Plan and Stormwater Pollution Prevention Plan (SWPPP) and associated inspection logs as required by permits and regulations, and established/managed compliance tracking databases for new landfills, landfill expansions, compost facilities, transfer stations and hauling operations.

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Mr. Sarwari is a Project Professional in our Sacramento, California, office. He has engineering experience on large-scale professional projects in the United States and Afghanistan. He specializes in general engineering design; civil engineering; solid waste facility design and engineering analysis; site grading, erosion control, and stormwater design; landfill gas (LFG) system design; construction quality assurance (CQA); and preparation of construction plans, specifications, and construction documents.

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    • Mr. Sarwari is a Project Professional in our Sacramento, California, office. He has engineering experience on large-scale professional projects in the United States and Afghanistan. He specializes in general engineering design; civil engineering; solid waste facility design and engineering analysis; site grading, erosion control, and stormwater design; landfill gas (LFG) system design; construction quality assurance (CQA); and preparation of construction plans, specifications, and construction documents.
      He has designed and provided oversight for the construction of building structures and facilities, such as roads, bridges, channels, and water and sewage systems, for the U.S. Army Corps of Engineers (USACE) and the Air Force Civil Engineer Center (AFCEC) in Afghanistan.

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Mr. Saylor has been active in the field of environmental and construction engineering since 1978. His experience includes public sector, private sector, and consulting, resulting in a broad understanding of all facets of engineering issues.

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    • Mr. Saylor has been active in the field of environmental and construction engineering since 1978. His experience includes public sector, private sector, and consulting, resulting in a broad understanding of all facets of engineering issues. Since 1984 Mr. Saylor has been involved in the landfill engineering field.

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Paul Schafer
Paul Schafer
Vice President/Project Director/National Expert on Ambient Air Monitoring and on Odor Management
Sacramento, CA
National Expert: Ambient Air Monitoring and O... +
O. (619) 823-5333

Mr. Schafer is a Vice President, Project Director and our National Expert on Ambient Air Monitoring and on Odor Management. During his technical career at SCS and SCS Tracer Environmental, Mr. Schafer has served in key roles on several nationally significant monitoring efforts. He has in-depth experience interfacing with regulatory agencies regarding the performance of monitoring systems, source emission tests, and continuous process monitors which are operated for our clientele.

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    • Mr. Paul Schafer is a Vice President, Project Director, and our National Expert on Ambient Air Monitoring and on Odor Management. During his technical career at SCS and SCS Tracer Environmental, Mr. Schafer has served in key roles on several nationally significant monitoring efforts. He has in-depth experience interfacing with regulatory agencies regarding the performance of monitoring systems, source emission tests, and continuous process monitors which are operated for our clientele. He has had direct working experience with the San Luis Obispo County APCD, San Joaquin Valley APCD, Imperial County APCD, South Coast AQMD, Santa Barbara APCD, San Diego County APCD, California Air Resources Board, EPA Region IX, and the General Services Administration regarding monitoring programs and air quality impact assessments. He is also experienced in liquids management.
      Mr. Schafer offers decisive management skills, which contribute to the success of monitoring programs under his purview. Cost control management and defensible technical performance are primary goals integral to all of the long-term monitoring programs that he manages. Mr. Schafer has developed close business relationships with manufacturers and vendors in the ambient air quality monitoring field.
      Contact Paul at 619-823-5333 or

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