Mary E. Sharrett, P.E., LEED AP, President

Mary has over 20 years of experience in a vast array of environmental, natural resources, threatened and endangered species, and permitting consulting services. She is experienced in all aspects of Nationwide, Isolated, and Individual Section 401/404 permits for large and small projects; coordinating with federal and state agencies for Threatened and Endangered Species and Cultural Resources. Mary also completes stream and wetland mitigation design as part of Section 401/404 permitting and prepares Categorical Exclusion, Environmental Assessment, and Section 4(f) and 6(f) documents related to National Environmental Policy Act (NEPA) documentation. She is familiar with all aspects of due diligence, including performing environmental site assessments (ESAs) and screenings, U.S. Army Corps of Engineers (USACE) HTRW reports, Phase II ESAs, groundwater and soil sampling, asbestos surveys, and underground storage tank services. Her experience also includes preparation of Storm Water Pollution Prevention Plans (SWPPP) and Spill Prevention and Control and Countermeasure (SPCC) plans.

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Jeffrey M. Baird, (JB), P.E., P.S., Senior Project Engineer

JB has over 20 years of experience with managing, designing, and building a variety of civil engineering projects. He has performed design work on many types of projects including bridge structures, culverts, roads, intersections and development sites. He has designed bridge structures including non-composite box beam, composite box beam, and steel beam with composite deck superstructures. His bridge designs have included both integral and non-integral abutments. He has also designed and overseen a broad array of bridge rehabilitation and bridge maintenance projects. His design experience also includes roadways, intersections, culverts, wingwalls on spread footings, and performing hydraulic analysis. JB also has extensive surveying experience having completed project surveys, boundary surveys, legal descriptions, plats of survey, and ODOT right-of-way plans. He has overseen the construction of dozens of projects, acting as Project Engineer, which has included Federal, OPWC, and Local Funded Projects. He has been the Project Engineer for bridge replacements, bridge rehabilitations, roadway and intersection projects, and culvert replacements. He has also been Project Manager of Federal, OPWC, and Local Funded Projects. As Project Manager he ensured all the details needed for a successful project were taken care of. This has included coordinating and ensuring that public involvement, utility relocation, environmental, permitting, and right-of-way acquisition tasks were performed. He has also been the LPA Person in Responsible Charge of well over a dozen federally funded projects.

Katherine M. Arnett (Kathy), Senior Project Manager

Kathy’s expertise is in Geology/Hydrogeochemistry and Groundwater Modeling/Risk Evaluation. Over the past 30 years Kathy has managed and led a variety of site management projects that range from large, complex Remedial Investigations, Risk Assessments, Remedial Construction projects to Wellfield Design and Protection projects for industrial and municipal clients. Kathy has been in multiple roles in recent years including global account manager, senior sales manager, senior hydrogeologist, and senior program manager. Her more recent roles have been focused on management of multi-site and large complex environmental service delivery for clients domestically and internationally. In major project and program management, Kathy engages clients and teams in short and long term site strategy development in alignment with business, stakeholder, and regulatory drivers to gain targeted outcomes. Kathy also serves on the City of Dayton Environmental Advisory Board.

Dr. Michael Hoggarth, Principal Ecologist, Professor, Department of Biology and Earth Science, Otterbein University

Dr. Michael Hoggarth, Professor in the Department of Biology and Earth Science at Otterbein University, is joining the STONE team as Principal Ecologist. He received his B.S. in Biology from Seattle Pacific University, his M.S. in Biology from the University of North Alabama, and his Ph.D. in Zoology from The Ohio State University, where he specialized in freshwater mussel ecology and systematics. He was an Environmental Scientist with the Ohio Department of Transportation, Bureau of Environmental Services from 1987-1992. He has published extensively on the life history, ecology, and systematics of mussels in the family Unionidae, including numerous peer-reviewed papers, and he is co-author of a book entitled, The Freshwater Mussels of Ohio (2009). Since leaving ODOT, he has performed thousands of aquatic assessments and mussel surveys in partnership with many ecological, environmental, and engineering firms across the Midwest. He has been a member of the Ohio Academy of Science since 1980, a Fellow of the Academy since 1999, and was President of the Academy from April, 2014 to April, 2016.

Henry R. Stonerook (Hank), P.E., BCEE, Senior Project Manager

Hank has extensive experience in the planning and design of environmental and civil engineering projects. His environmental engineering experience includes Phase I and II environmental site assessments, design of remediation systems, and development of environmental compliance programs for industry. His civil engineering background includes the design of systems for storm water management, industrial wastewater pretreatment, and stream restoration projects.

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Teagan Loew, CESSWI, Project Ecologist

Teagan has a broad range of knowledge in life sciences, with a focus on ecology and water resources. He is experienced in wetland/stream delineations and assessments, threatened and endangered species surveys, 401/404/nationwide permitting, mitigation plans and monitoring, GPS data collection, and GIS spatial analysis. Teagan is a Certified Erosion, Sediment, & Stormwater Inspector (CESSWI) and has completed certification courses in USACE 38 hour wetland delineation, ODNR Group 1 and Group 3 Mussel Surveys, Ohio Rapid Assessment Method for Wetlands (ORAM), Headwater Habitat Evaluation Index (HHEI), Headwater Macroinvertebrate Field Evaluation Index (HMFEI), and Vegetation Index of Biotic Integrity (VIBI). Teagan’s previous experience includes working for both the Ohio DNR and Ohio EPA, dealing with 401 water quality certification permitting and wetland and stream restoration. Other areas of experience include NEPA section writing, Total Maximum Daily Load (TMDL) measurement and monitoring, stormwater sampling, NPDES compliance, groundwater monitoring, soil/sediment sampling, and remediation action plans.

John A. Lytle, P.E., QEP, Senior Engineer

John has more than 38 years of experience as a project manager/engineer in the environmental field. His expertise at Stone Environmental focuses on air projects, which include Title V permits, state Permits to Install or construct, Permits to Operate, air emission inventories, dispersion modeling, Risk Management Plans, and odor studies. His other experience includes wastewater treatment, infiltration/inflow studies, SPCC Plans, and environmental compliance assistance. He has performed these projects at a wide variety of facilities including those in the chemical, steel, automobile, and glass industries.

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Sharon Justice Herman, P.E., Environmental Engineer

Sharon has more than 20 years of experience working in the field of environmental engineering. She has significant experience in storm water compliance and industrial air pollution control, permitting and stack testing. Her work at Stone Environmental has included compliance audits, wastewater and NPDES permitting, and preparation of environmental emergency plans for both industrial and government clients.

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Janet Mead, P.E., Senior Engineer

Janet is an experienced engineer in wastewater treatment design, industrial pretreatment program management, water treatment design, spill prevention, system inspection, and regulatory compliance. She has managed and developed standards for industrial pretreatment programs at several municipalities to ensure the protection of facilities and compliance with Ohio EPA regulations and is adept at NPDES and Permit-to-Install (PTI) submittals. She has consulted with cities, industrial leaders, and residents to advise on regulatory compliance and spill prevention, and to review complaints and drive problem resolution.

Ken Kowalewski – Senior Designer

Kenneth Kowalewski, STONE’s Senior Designer, brings 26 years of practice in the field of civil engineering and technology, having worked in the areas of heavy highway & bridges, heavy & light rail, urban highways, facilities, and utilities installation in roles such as Civil Engineering Technician, Bridge & Roadway Engineering Technician, and CADD Manager. He is knowledgeable in the preparation and interpretation of construction plans and calculations and is proficient in the use of Microstation, AutoCAD, and related design software. He enhances STONE’s capabilities by his skills and experience in the following categories: Geometric design; Quantity calculations; Contract cost estimates; Steel detailing; Rehabilitations; Project type, size, & location determinations; Construction observation; Bridge inspection, including utilizing climbing and under-bridge units; Survey technician; AutoCAD and Microstation; Estimating; and Training.

Eleanor Kern, E.I., – Staff Engineer

Eleanor has over 3 years of experience in the environmental engineering field. She is experienced in soil, surface water, and groundwater sampling and assessment, State and Federal environmental regulations, geospatial analysis, air permitting, risk and process hazard evaluation and assessments, and Phase I Environmental Site Assessments. In the past, she has worked on a variety of environmental sampling and design projects in the nonprofit, government, and research sectors. Her work at Stone Environmental has focused on environmental compliance for clients and analyzing the spatial relationships of watersheds and other sites through GIS.

Jonathan A. Zanders, Project Field Manager

Jon has over 20 years of experience in the environmental field. He is experienced in Phase I and II Environmental Site Assessments, UST Closure and corrective actions, sampling and analysis of soil, groundwater, building materials, sediments, surface water and wastewater. Jon also has extensive experience in project management, site supervision, health and safety, and report preparation, and data interpretation and management. He has been a guest speaker and presenter for the National Groundwater Association annual Field Sampling Technologies and Methodologies seminar.

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