Professional and Technical Staff
Our experienced staff of scientists, planners and environmental professionals are the technical experts who help municipalities, advocates, policymakers and citizens get clean water projects in the ground. To contact a CWP staff person, call 410-461-8323 and use the directory to find their line/extension.
Hye Yeong Kwon
Executive Director/ CEO
As the Executive Director, Hye Yeong’s responsibilities include organizational management, fund-raising, and program development. Hye Yeong joined CWP in 1996 and combines her education and training to help lead CWP toward a multi-disciplinary strategy to protect and restore watersheds throughout the country. Her project experience has included a wide range of subjects, including illicit discharge detection and elimination, environmentally sensitive site design, watershed planning, green jobs, and consensus building. Hye Yeong has a B.S. in Biology, an M.S. in Management, and an MBA.
Karen Cappiella
Director of Research
Karen is a former GIS guru whose areas of expertise include applied watershed research, watershed planning, producing guidance documents and articles on watershed and stormwater management, and proposal writing. In addition to managing the Research Program, she coordinates proposal submissions for CWP. Karen has been with CWP since 2000, and has a B.A. in Geography from Millersville University and an M.A. in Geography from East Carolina University. She lives in New Market, Maryland with her husband and daughters.
Greg Hoffmann, PE
Director of Stormwater Services
Greg has been with the Center for Watershed Protection since 2008. Through his work at CWP, Greg has had the opportunity to design numerous stormwater retrofits and develop stormwater regulations and guidance manuals for several states and communities. Greg has a master of engineering and a bachelor of science in environmental engineering from Michigan Technological University. He would be happy to discuss all things stormwater with you, but as a native Wisconsinite, would be just as happy discussing his beloved Packers.
Amanda Pollack, PE
Director of Training
Amanda joined the Center for Watershed Protection as a Water Resources Engineer in 2022. Prior to joining CWP, she was in consulting engineering for 16 years and municipal engineering at the City of Salisbury, Maryland for 10 years. Amanda has experience in project management, grant writing and administration, water/wastewater/stormwater design, and construction administration. She managed Salisbury’s MS4 program and implemented the Stormwater Utility. Amanda holds a Bachelor of Science degree in Civil Engineering from Lehigh University. Amanda spends her time outside of work enjoying nature, doing puzzles, attending sporting events and traveling.
Karen Titus
Director of Membership & Training
Karen is originally from NJ, but has been residing in Maryland for the last 18 years. She has several years experience in membership sales, marketing and event planning, Karen is also a holistic nutritionist and avid yogi. In her free time Karen loves to hike, bike and spend time with her family and friends.
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Beth Uhler
Pennsylvania Director
Beth joined CWP in 2022 as Pennsylvania Director. Over the past 20 years, her expertise in stormwater management, watershed planning, and NPDES MS4 permit compliance has been a valuable resource for local governments and other stewards of Pennsylvania’s waters. She brings sound scientific and regulatory advice to a collaborative and technology driven approach in providing project and program guidance. She regularly provides water resources trainings and presentations and serves as a subject matter expert for stormwater management programs. She has a Bachelor of Science in Geo-environmental Studies from Shippensburg University. Beth enjoys hiking, skiing, and canoeing and kayaking Pennsylvania’s streams and rivers.0
Marlyn Argueta
Operations Manager
A born and raised Marylander, Marlyn joined CWP in 2017. He graduated from the University of Maryland Baltimore County with a bachelor’s degree in history and an associate’s degree in business administration. After hours, you can find him at a DC United soccer game or coaching the South River High School soccer team. In 2023, Marlyn’s passion for soccer and coaching reached new heights, culminating in a State Championship for South River High School. His dedication and expertise also earned him the title of the 2023 Washington Post Soccer Coach of the Year.X
Paige Buzard
Landscape Designer
Paige joined CWP in 2023 as a Landscape Designer pending her Landscape Architecture license. Her areas of expertise are design, construction documentation, permitting, and ordinance and plan review. Before joining CWP, Paige authored a County Farmland Preservation Plan in New Jersey and worked in the private design field for seven years. Her projects include those in New York, New Jersey, Pennsylvania, Virginia, Maryland, and North Carolina ranging from residential, commercial and institutional design to mine reclamation planning and stormwater management pollution protection plans, however she is most passionate about farm and equestrian design and nutrient/pasture management plans. Paige is eager to contribute her knowledge, experience and creativity to support CWP’s mission to protect and restore water resources. Paige graduated from SUNY ESF in 2017 with a Bachelor’s of Landscape Architecture and a minor in Sustainable Construction.
Deb Caraco, PE
Senior Watershed Engineer
Deb has been a CWP employee since 1996, and currently works for CWP remotely from Ithaca, New York in the beautiful Finger Lakes Region. Her areas of focus include IDDE, pollutant modeling, stormwater design, and data analysis. She has a Master of Engineering in Biological and Environmental Engineering from Cornell University, and is completing a Master of Applied Statistics from Penn State in Fall of 2017. Deb enjoys hiking, cross country skiing, reading and music, but is a nerd at heart and her true loves are board games, puzzles and spreadsheets.
Jordan Fox
Watershed and Stormwater Research Specialist
Jordan joined CWP full-time in 2017 after graduating from Washington College in Chestertown, MD with a B.S. in Environmental Science, a B.S. in Biology, and a minor in chemistry. Her areas of expertise include GIS, field methods for watershed assessment and monitoring, and research on diverse watershed- and stormwater-related topics. Her favorite projects involve spatial analysis, data-driven deliverable creation, technical writing, and both desktop and field research. Jordan lives in Columbia, MD, and she enjoys reading, birdwatching, and hiking with her dog Jupiter in her free time.
Lisa Fraley-McNeal
Sr. Watershed & Stormwater Research Specialist
Lisa has been working on urban watershed and stormwater management since 2006. Her areas of expertise include GIS and field methods for watershed assessment, watershed planning, stream restoration, Chesapeake Bay TMDL crediting, and applied research on topics related to watersheds and stormwater. She has a B.S. degree in Geography and Environmental Systems, with a writing minor and cartography certificate from the University of Maryland, Baltimore County. Lisa also has a M.S. degree from the University of Maryland, Baltimore County in Marine and Estuarine Environmental Science.
Acadia Kyle
Intern
Acadia Kyle is CWP’s Chesapeake Conservation and Climate Corps member for the 2023-24 term. Acadia is passionate about the ecological impact of restoration and has an Associates in Sustainable Horticulture. In their free time they enjoy exploring the outdoors and cooking.
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Allison Lee
Water Resources Engineer
Allison joined the Center for Watershed Protection in 2022. Prior to joining CWP, she worked at an environmental engineering consulting firm where she had experience in the design, inspection, and maintenance of stormwater BMP’s. Allison received her B.S. degree in Civil Engineering from Virginia Tech (Go Hokies!). She is a Virginia Beach native currently residing in Northern Virginia. Outside of work, Allison enjoys traveling, hiking, drawing, and attending concerts and events in DC.
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Julie Schneider
Watershed & Stormwater Planner
Julie has been working on urban watershed and stormwater management since 2003. Since joining CWP in 2005, she opened a Philadelphia, Pennsylvania office. In this role, she works with communities in Pennsylvania to help meet local TMDL and stormwater permit needs. Her areas of expertise include GIS and field methods for watershed assessment, watershed planning, and review of local codes and ordinances. She received her B.S. degree in Environmental Science from the SUNY University at Buffalo and a M.S. degree from SUNY College of Environmental Science and Forestry. Julie lives in Glenside, PA with her husband and two sons.
Bill Stack, PE
Senior Advisor
With over 40 years of experience in the field, Bill is the senior resident expert on staff. Before coming to CWP, Bill worked in Baltimore City and also served as a past CWP Board Member. Bill has a B.S. in Biology from St. Mary’s College of MD and a M.S. in Biology from Towson University and is a professional engineer licensed in Maryland. Bill lives in Carroll County, MD with his wife.
Chris Swann
Watershed Analyst-Planner/IT
email: cps (@) cwp.org
Chris has been a watershed planner at CWP since 1997. His work time is split between two responsibilities; researching and writing technical guidance on watershed management issues, and trying to keep CWP’s technology in check and functioning properly. Since joining CWP, Chris has contributed in the writing of numerous CWP publications, including the Urban Subwatershed Restoration Manual series and the Better Site Design Manual. Chris has a B.S. in Natural Resources Management from the University of Maryland, as well as a B.S. in Biology from James Madison University.
Emily Trethewey, PE
Water Resources Engineer
Emily joined the Center for Watershed Protection in 2020. Prior to joining CWP, she worked as a consultant in the private sector, providing a broad range of guidance and engineering services to local governments. Her experiences include reviews of local ordinances and stormwater management systems for site development, construction inspections and a broad range of civil and environmental engineering in coastal environments. Emily received her B.S. degree in Civil Engineering from Rutgers University.
Sami Towsif Khan
Sami Towsif Khan joined the Center for Watershed Protection in June 2024. He brings over 5 years of research experience in hydrological and hydraulic modeling, green infrastructure, and sediment transport analysis. Sami completed his Ph.D. in Biological Systems Engineering from Virginia Tech, where his research focused on the impacts of climate change and stormwater management practices on the channel stability of urban headwater streams. Born and raised in Bangladesh, Sami completed his MSc in Environmental Engineering from Germany and his BSc in Civil Engineering from his home country. Outside of work, he enjoys cooking, traveling, exploring new eateries, and attending EDM festivals.
Alexandria Wilkins
Watershed Planner
Alexandria joined the Center for Watershed Protection, Inc in 2021 as a Watershed Planner. A recent graduate with a Master of Environmental Science and Management (MESM) degree – specializing in water resource management – and a background in environmental stewardship and education, Alexandria is eager to contribute her knowledge and experience to support CWP’s mission to protect and restore water resources. She brings skills in project management, geographic information systems (GIS), data analysis to the team. In addition, she is interested in stakeholder engagement and the collaborative management of natural resources. Currently based in Silver Spring, Maryland, Alexandria enjoys spending her time outside of work cooking, baking, listening to audiobooks, and visiting Maryland’s farm breweries.
Carol Wong, PE
Senior Water Resources Engineer
Carol is a Maryland native and joined the center in 2014. She graduated with a B.S. in Mechanical Engineering from the University of Maryland and a M.S. in Environmental Engineering from Stanford University. Prior to joining CWP, Carol worked for the private sector as a consultant, managing environmental research and development projects. Carol has experience in program management, bioretention research, BMP design and permitting, construction inspection, and water quality monitoring.
Ellen Zagrobelny, PE
Water Resources Engineer
Ellen joined the Center for Watershed Protection as a Water Resources Engineer in 2017, coming from civil engineering consulting. Ellen has designed stormwater management facilities for a variety of localities, from the oil & gas industry in PA and WV to urban areas the Chesapeake Bay Watershed. Ellen holds a B.S. in Civil Engineering from the University of Virginia. Her other areas of interest include native grassland restoration, raising pastured livestock, gardening, and reading great books.
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