About Us

Vapor Intrusion
Site Assessments
Investigation & Remediation
Permitting & Reporting
Environmental Management
Litigation Support
GSA Contract for Federal Agencies
Vapor Intrusion Newsletter
 
CLIENT FOCUS
 
Formed in 1991 by senior environmental consultants, EnviroGroup has always focused on one thing - client service. We have worked on some of the largest environmental sites in the country: numerous high-profile mine sites, century-old lead smelters in the middle of cities, oil refineries with acres of free product, and DNAPL sites with groundwater plumes over a mile long. But we are most proud of the projects that stayed small — because of our prompt response and sound advice.
 
ENVIROGROUP OFFICES
 
EnviroGroup offices are located in Denver and Longmont, Colorado, Saratoga Springs, New York, and Seattle, Washington. Our professionals in each office serve clients across North America.
 
Go to our Contact page for address, phone number, and email contact information.
 
OUR KEY PEOPLE
 
We are highly experienced environmental, civil, geotechnical and chemical engineers; geologists, hydrogeologists, and geochemists; biologists and industrial hygienists; and regulatory and GIS specialists, with over 15 years average experience. With consulting, mining, and petroleum industry backgrounds, we understand that solutions must be practical and make economic sense. Brief resume of key personnel are provided below.
 
David J. Folkes, P.E. — Principal
 
Mr. Folkes is a Registered Professional Engineer with over 25 years experience in environmental and geotechnical consulting in the U.S. and Canada. As a Principal and President of EnviroGroup Limited, he provides a variety of services to natural resource, industrial and governmental clients across the country. Mr. Folkes has performed environmental site assessments at a wide variety of industrial, commercial, and natural resource sites with organic, petroleum, and metals impacts. He has managed groundwater and soil investigation and remediation projects at numerous sites, including several mining, smelting, and metals refining sites; major petroleum refinery sites; and some of the largest groundwater solvent plumes in the country. He is skilled in the forensic evaluation of the sources and causes of metals contamination in soils; solvent contamination in groundwater; and investigation and mitigation of indoor air impacts due to groundwater contamination. Mr. Folkes has provided federal and state regulators with practical experience on vapor intrusion testing, mitigation, and community interaction issues. Areas of research include background or indoor sources of solvents in air, which can be mistaken for vapor intrusion, and groundwater to indoor air correlations. He has published and presented papers on numerous environmental topics, including groundwater and vapor intrusion remediation, and served as an expert witness in both state and federal court, including testimony in three class action lawsuits.
 
Bence V. Close, P.E. — Principal
 
Bence is a Registered Professional Engineer with over 23 years of environmental consulting experience in a wide variety of businesses, including energy and mineral resource development, petroleum and chemical processing, utilities, waste management, manufacturing, agriculture, water supply, land development, watershed management, and environmental compliance. He has demonstrated success in assisting with clients on projects under the regulatory settings of CERCLA, RCRA, NEPA, SMCRA, CWA, NRDA, and various State voluntary cleanup programs. He has managed and performed large-scale, complex cleanup actions for numerous clients and client groups, involving site characterization, feasibility studies, contaminant culpability, public involvement, remedial design, environmental permitting, construction contracting and management, litigation support, and expert witness testimony. He has developed and implemented effective strategies for sites involving metals, petroleum hydrocarbons, and chlorinated solvents. He has presented and published numerous papers on various environmental topics and has served as an expert witness in federal court and numerous state rulemakings.
 
Kenneth C. Scott, P.G. — Principal
 
Mr. Scott is a Registered Professional Geologist and hydrogeologist with over 25 years experience in the fields of hydrogeology, geology, and geophysics as related to environmental concerns, water resources, and natural resource development. He has evaluated solvent contamination at manufacturing sites throughout the United States, and conducted regulatory negotiations to reduce burdensome monitoring requirements and develop reasonable cleanup objectives. He previously conducted a Remedial Investigation, prepared RCRA closure plans for sites with solvent contamination in soil and groundwater, and modeled groundwater flow for a number of remedial design projects, including recovery well fields, slurry walls, drains, and caps. Mr. Scott has interfaced with regulatory personnel and developed numerous work plans, testing procedures, and quality control programs for both indoor air testing and groundwater investigation programs.
 
David W. Kurz, P.E. — Principal
 
Mr. Kurz is a Registered Professional Engineer with over 22 years experience in the execution and management of remedial engineering, hazardous waste, site investigation, and civil engineering projects. His areas of expertise include remedial design, project management, waste management, Remedial Investigations/Feasibility Studies, construction inspection, and landfill assessment. Mr. Kurz has managed the mitigation of vapor intrusion in over 340 buildings including commercial, single family residential, and multi-family residential structures. He is responsible for installation and operation of a groundwater containment and treatment system. He has conducted waste management reviews and evaluated facility compliance with regulatory programs, including air emissions and surface water discharges, at several industrial facilities. Mr. Kurz has managed the design and implementation of remedial actions to mitigate adverse conditions at several sites throughout the country, including planning, client/agency relations, and tracking of project quality, budgets, and schedules. He has developed regulatory interpretations for RCRA and CERCLA sites and successfully petitioned EPA with acceptable criteria for VOCs in soil allowing a client to terminate soil vapor extraction efforts. Designs have included reclamation plans and closure plans for landfills and tailings impoundments and groundwater extraction and treatment systems.
 
Margaret (Poppy) Staub — Principal
 
Ms. Staub has over 14 years of experience in environmental compliance, Superfund site management, pollution prevention practices and management systems development in the mining and extractive metallurgical industries. Ms. Staub served as the Environmental Engineer, Superfund Site Manager, and Globe Plant Manager for ASARCO, Inc. During her tenure with Asarco, she gained experience with a wide variety of topics including RCRA, CWA, and CAA compliance, environmental, safety and health management system development, process management, business development, and community relations. In 2000, she successfully implemented an environmental management system at a 114 year old manufacturing facility and obtained ISO 14000 certification. She has been involved with numerous corporate level projects designed to bridge agency/company relationships and has assisted in developing and integrating corporate level management system procedures into plant level work practices. Ms. Staub was also responsible for overseeing several multi-million dollar environmental remediation projects in Denver, Golden, and Leadville including an innovative, voluntary cleanup project in the Bonanza Mining District. Ms. Staub has prepared numerous professional papers regarding mine drainage treatment, voluntary cleanup projects, public relations and environmental, health and safety management systems. She has been a guest lecturer at the Rocky Mountain Mineral Law Foundation, the Environmental Protection Agency and has been asked to speak at several functions promoting the use of management systems as a method to improve environmental compliance.
 
Scott Myers, P.G. — Senior Project Manager
 
Mr. Myers is a Registered Professional Geologist with more than 23 years of experience in Environmental Health & Safety Compliance for industrial, natural resources, and commercial facilities, including three years managing EH&S compliance at the U.S. Antarctic bases. In addition to his years in the petrochemical, manufacturing, and surface mining industries, Mr. Myers has extensive experience as both a surface mine inspector and a RCRA/CERCLA inspector/permit writer for the State of Kentucky, and currently serves as a Commissioner for the State of Colorado (Solid and Hazardous Waste). He is proficient with environmental requirements in more than 20 states, as well as Europe, Canada, Mexico, Chile, Australia, New Zealand, and Antarctica. His expertise includes environmental compliance & permitting (RCRA, CERCLA, NEPA, SPCC, OPA, Clean Air Act, Clean Water Act), EH&S Management System design and implementation, due diligence and site assessment, and remedial design and project management.
 
Paul S. Arell, P.E., DEE
 
Mr. Arell is a Registered Professional Engineer and Diplomat of the American Academy of Environmental Engineers with over 30 years of experience ranging from water pollution control, to Superfund, to hazardous waste corrective action under RCRA. Most recently, Mr. Arell managed the RCRA Corrective Action Program at the EPA, Region VIII for six years. In that capacity, he implemented federal corrective action at a number of facilities in Colorado. Two of these high profile facilities had vapor intrusion aspects which required state-of-the-art indoor air testing and remediation. Mr. Arell has extensive experience in leading disparate groups toward collaborative agreements resulting in negotiated settlements, work plans, and administrative orders. Mr. Arell organized and led a state/Federal workgroup to coordinate cleanup of complex petroleum refineries. He accelerated progress on corrective action projects, reducing time and money spent in completing cleanup actions. Mr. Arell has performed site assessments and screened sites using the Hazard Ranking System for the National Priorities List. Mr. Arell has provided assistance to a state developing a voluntary cleanup program. He managed the NPDES compliance monitoring and enforcement program across six states, including site inspections and review of discharge monitoring reports to ensure permit compliance. Mr. Arell negotiated settlements for NPDES enforcement actions and established schedules for the construction of upgraded wastewater treatment facilities.
 
Jeffrey P. Kurtz, Ph.D. — Senior Scientist
 
Dr. Kurtz has over 20 years experience as a consulting Geologist/Geochemist. He was an Assistant Professor of Geology at the University of Colorado, where he was responsible for graduate and undergraduate student instruction in the areas of: mineralogy, aqueous geochemistry, ore deposits and field geology. Dr. Kurtz also performed independent research in the fields of clay mineralogy and ore deposit geochemistry. Dr. Kurtz has designed regional exploration programs, geophysical surveys, mapping programs, stream sediment sampling, soil sampling and drilling programs for a number of mining companies including Battle Mountain Gold Company, Summitville Consolidated Mining, Challenger Gold Company and Central Alaska Gold Company. Statistical and spatial analysis of geochemical and geologic data was a major component of this work. Dr. Kurtz has prepared numerous papers and given presentations on a variety of topics, including mine site investigations, hydrothermal alteration related "background" acidity and geochemistry, and background sources of indoor air chemicals at vapor intrusion sites.
 
David W. Vaden, P.G.
 
Mr. Vaden is a registered professional geologist with over 15 years experience in the performance and management of environmental projects for industrial, natural resources and commercial clients across the US. He provides environmental site assessment, due diligence, site investigation, site remediation, vapor intrusion evaluation, and other services from EnviroGroup’s Seattle office. He has evaluated solvent, petroleum hydrocarbon and metals impacts to soil and groundwater at sites across the US. Areas of expertise include geochemistry, hydrogeochemistry, metals migration in groundwater and the vadose zone, the design and administration of relational database management systems, and computer programming.
 
Theodore E. Kuehster, P.E. — Senior Project Engineer
 
Mr. Kuehster is a registered civil engineer with 25 years experience in environmental remediation and storm drainage analysis and design, including open channels and culverts, detention ponds, and grading design. Mr. Kuehster has conducted remedial projects involving groundwater interception, water treatment, soil remediation, and storm water control. He has prepared designs for voluntary cleanup plans at several sites, for a storm water control system at an organic chemicals plant in Texas to separate storm runoff from plant wash water, and for modifications to an existing wastewater treatment plant to increase hydraulic throughput and accommodate increased feedwater concentrations. Mr. Kuehster has completed major drainage projects in the past including preparation of flood control master plans and drainage designs for Colorado E-470.
 
Eric Lovenduski — Project Manager
 
Mr. Lovenduski is a geologist with eight years experience in environmental consulting. He is skilled at planning and completing complex environmental investigations and evaluating corrective actions at Brownfield, RCRA, UST, and voluntary cleanup sites. Mr. Lovenduski has successfully completed projects at active and inactive industrial sites, former manufactured gas plants (MGP), and U.S. Department of Defense (DOD) facilities. He regularly coordinates all aspect of field activities including permitting, subcontractors, and interaction with business and community representatives. Mr. Lovenduski assists clients with Vapor Intrusion investigations and mitigation; Phase II Remedial Investigations; Brownfield, UST and voluntary cleanup sites; Phase I Environmental Site Assessments meeting EPA All Appropriate Inquiry (AAI) requirements; and New York State Department of Environmental Conservation (NYSDEC) Brownfield, Inactive Site, Remediation, and Spills Cleanup Programs.
 
Charoen Sanpawanitchakit, Ph.D. — Environmental Chemist
 
Dr. Charoen Sanpawanitchakit is an environmental chemist with over 8 years experience in subsurface contaminant investigation and remediation studies. While earning his Ph.D. at the Colorado School of Mines, Charoen investigated the fate and transport of uranium in groundwater at a Uranium Mill Tailings Remedial Action (UMTRA) site. He is skilled in aqueous chemistry, analytical chemistry, wastewater treatment, field site investigation, and mathematical modeling. As a consultant, his investigation experience includes work at petroleum chemical facilities, coal-burning power generating plants, and numerous manufacturing plants, including the automotive, computer, and food products industries. Dr. Sanpawanitchakit has conducted remediation at sites with chlorinated solvents and petroleum hydrocarbons using excavation, dual-phase extraction, and pump-and-treat methods. Dr. Sanpawanitchakit has also conducted evaluation, assessment, and optimization for treatment of wastewater and groundwater, including treatment of 1,4-dioxane contaminated groundwater.
 
 
Project Locations
EnviroGroup provides full environmental consulting services across North America, including site assessments, audits, permitting, and multi-media investigations and remediation. Centrally located in Denver, Colorado, our core team of experts can be at any location across the country within a few hours. Our network of subcontractors provides field labor and familiarity with local conditions and regulatory requirements across the country. Through our strategic alliance partners, we can provide services in fluent Spanish, with experience throughout South America.
 
EnviroGroup Offices
  • Denver, CO
  • Longmont, CO
  • Saratoga Springs, NY
  • Seattle, WA
7009 S. Potomac Street, Suite 300 | Centennial, Colorado 80112 | 303-790-1340
©2005 EnviroGroup, All rights reserved.