Robert Hartzel Archives

Urban Stormwater Management, Planning, & Design
Urban Stormwater Management, Planning, & Design

Urban Stormwater Management, Planning, & Design

Bobby Kreiner2026-05-04T12:16:00-06:00March 27th, 2014|Tags: Adrienne Nemura, Brandon Steets, Chad Drummond, Chris Wessel, Eric Smalstig, Eric Strecker, Ganesh Krishnan, James Barbis, James Cowart, James Packman, James Peale, Jeremy Yeglin, John Knutson, Jonathan Allen, Kathleen Harrison, Kathleen McGowan, Ken Susilo, Kim Williams, Leah MacKinnon, Lisa Austin, Marc Leisenring, Marcus Quigley, Mark Ellard, Mark R Willobee, Nigel Pickering, Peter Mangarella, Philip Reidy, Robert Annear, Robert Hartzel, Robert Roseen, Scott Deitche, Scott Promer, Slider Pages and Posts, Stephanie Owen, Steve Layman, Tom Fendley, Turgay Dabak, Venkat Gummadi, Wade Burcham|

Geosyntec's engineers and scientists stand among the world's foremost experts in urban stormwater management. We are innovators who design best management practices to mitigate impacts to surface water quality, enhance water conservation strategies, and contribute to municipal water supplies. Our professionals develop and implement comprehensive water quality master plans and site-specific designs using green infrastructure concepts for long-term stormwater control. We also guide the development and design of construction, industrial, and municipal programs for National Pollutant Discharge Elimination System (NPDES) regulatory program compliance. We have evaluated the opportunities, constraints, effectiveness, and costs associated with a variety of low impact development and green-streets options and have provided conventional treatment control BMPs for maintaining water quality control. We provide end-to-end solutions for a wide variety of applications from proprietary cistern sizing and optimization modeling and water collection and pre-filtration strategies, to designs for filtration, treatment, and water distribution systems. Our water resources engineers specialize in surface-water and groundwater interactions, ecosystem restoration, multi-beneficial project development, hydromodification management, and erosion and sediment control. In addition, our practitioners have been instrumental in developing, publishing, and supporting numerous stormwater guidance and design manuals. Geosyntec professionals established and continue to contribute to the International Database on Urban Stormwater BMP Design and Performance. We frequently present state-of-the-practice training sessions and workshops on stormwater management, NPDES regulatory program requirements, erosion and sediment control technologies, and BMP performance and design.

Modeling and Management of Stream Hydromodification Impacts
Modeling and Management of Stream Hydromodification Impacts

Modeling and Management of Stream Hydromodification Impacts

Bobby Kreiner2026-03-15T10:45:46-06:00March 27th, 2014|Tags: Adrienne Nemura, Brandon Steets, Brian Valleskey, Chad Drummond, David Bonnett, Eric Strecker, Ganesh Krishnan, Kathleen Harrison, Keith Tolson, Ken Susilo, Kim Williams, Lisa Austin, Marc Leisenring, Marcus Quigley, Mark Ellard, Mark Hanna, Michael Lodato, Paul Dockweiler, Peter Mangarella, Philip Reidy, Poppy Staub, Robert Hartzel, Robert Roseen, Static Pages and Posts, Tom Fendley, Venkat Gummadi|

Geosyntec offers extensive experience in hydrologic and hydraulic modeling and the use of model output for the analysis of channel modifications and stream restoration projects. We frequently apply these models for long-term watershed and floodplain management. Our practitioners have decades of experience in the evaluation of hydromodification activities, such as channelization / channel modification projects and the construction of dams. We also examine the resulting stream bank and shoreline erosion impacts of hydromodification and how it might affect in-stream and streamside (or riparian) habitats for fish and wildlife. We develop and calibrate watershed hydrologic models and floodplain hydraulic models using new and existing data sources to examine both the volume reduction and control benefits of hydromodification projects. We also conduct stream restoration and open channel analyses to assist and design stream bank rehabilitation projects and to restore tidal flow in restricted salt marsh environments. Our geomorphic studies and sedimentation/scour analyses are used to understand issues of accelerated erosion or changes to sediment supply. We apply our expertise in open channel hydraulics to perform flooding analyses, including floodplain delineation, flow monitoring, and rating curve development. Geosyntec has developed excellent surface water modeling expertise including hydrodynamics, sediment transport, water quality, and fate and transport modeling. Geosyntec's expertise includes application of SWMM, HEC-HMS, HEC-1, HEC-2, HEC-RAS, RMA2/RMA4, EFDC, QUAL2k, River-FLO2D, CE-QUAL-W2, Computational Fluid Dynamics, and other models.

Wetland Delineation and Permitting
Wetland Delineation and Permitting

Wetland Delineation and Permitting

Bobby Kreiner2026-03-15T10:45:46-06:00March 27th, 2014|Tags: Adrienne Nemura, Brandon Steets, Chad Drummond, David Bonnett, Eric Strecker, Ganesh Krishnan, Kathleen Harrison, Keith Tolson, Ken Susilo, Kim Williams, Lance Fontenot, Lisa Austin, Marcus Quigley, Mark Ellard, Mark Hanna, Michael Lodato, Peter Mangarella, Philip Reidy, Poppy Staub, Robert Hartzel, Robert Roseen, Scott Struck, Static Pages and Posts, Tom Fendley, Wade Burcham|

Geosyntec practitioners are leaders in the development and application of science-based methods and tools for wetland identification and delineation. By determining the existence, location boundaries, and physical size of a wetland area, we help clients establish whether water bodies within a project area meet criteria for regulation under specific local, state, and federal jurisdictions. In addition, we make recommendations as to the size or width of any buffers that may be needed to protect water quality or habitats. Our field investigations and surveys establish clearly marked wetland boundaries, comprehensive delineation maps with data collection points, and site-specific information such as soil survey results or species composition and dominance data. We also can assess whether created or replicated wetlands function effectively and then aid clients in the application of this information to future design plans. This can include an evaluation of pre-construction design criteria and monitoring protocols. Once a wetland delineation is complete, Geosyntec guides clients through the permitting application process as outlined in Section 401 or Section 404 of the Clean Water Act as well as the various state and regional laws governing water bodies throughout the United States.

Environmental Impact Studies
Environmental Impact Studies

Environmental Impact Studies

Bobby Kreiner2026-03-15T10:45:52-06:00March 27th, 2014|Tags: Adrienne Nemura, Andrea Rocha, Andreas Lofgren, Brandon Steets, Chad Drummond, David Bonnett, Eric Strecker, Ganesh Krishnan, Kathleen Harrison, Keith Tolson, Ken Susilo, Kim Williams, Lance Fontenot, Lisa Austin, Marc Leisenring, Marcus Quigley, Mark Ellard, Mark Hanna, Michael Lodato, Peter Mangarella, Philip Reidy, Poppy Staub, Robert Hartzel, Robert Roseen, Static Pages and Posts, Tom Fendley|

For more than 40 years, strict adherence to guidelines under the National Environmental Policy Act requires all federal agencies to consider the environmental impacts of a broad scope of proposed actions and decisions as well as to consider any reasonable alternatives to those actions. Geosyntec's engineers and scientists offer clients decades of experience in the development of comprehensive environmental impact statements (EIS) for actions requiring federal authorization or that are otherwise subject to federal control. We also prepare EIS as required by regulations at the state and regional level around the country. Our practitioners across multiple disciplines lead the development of EIS for clients within the U.S. Department of Defense, U.S. Customs and Border Protection, the Federal Bureau of Prisons, the U.S. Air Force, and the U.S. Army Corps of Engineers, to name just a few. Impact statements are submitted for public comment periods throughout the development process. In addition, we guide clients through the review and comment by officials with the U.S. Environmental Protection Agency before a final EIS and record of decision can be infused into a program or action. As we develop an EIS, we ensure our detailed analysis provides a discussion of any significant environmental impacts affecting a project as well as the purpose of and need for proposed actions. We then review reasonable alternatives, including a No Action alternative, which would allow agency officials to avoid or minimize adverse impacts or enhance the quality of the human environment. These full disclosure documents detail the process through which a federal project was developed and demonstrates compliance with other applicable environmental laws and executive orders.

Constructed Wetland Treatment Systems
Constructed Wetland Treatment Systems

Constructed Wetland Treatment Systems

Bobby Kreiner2026-04-21T07:19:22-06:00March 27th, 2014|Tags: Adrienne Nemura, Brandon Steets, Chad Drummond, David Bonnett, Eric Strecker, Ganesh Krishnan, jeffrey king, Kathleen Harrison, Keith Tolson, Ken Susilo, Kim Williams, Lisa Austin, Marcus Quigley, Mark Ellard, Mark Hanna, Michael Lodato, Peter Mangarella, Philip Reidy, Poppy Staub, Robert Hartzel, Robert Roseen, Scott Struck, Static Pages and Posts, Tom Fendley|

Constructed wetlands have shown great promise treating a variety of constituents in wastewater and groundwater impacted by ammonia, BOD, COD, iron, phosphorous, volatiles, and other contaminants. Geosyntec has significant experience in conducting a wide variety of wetlands-related projects. For example, Geosyntec has partnered in the design and implementation of innovative vertical-flow constructed wetlands systems and adapted this technology for the effective treatment of wastewater. The features of this technology include a small footprint, a modular design, and the system's operational stability throughout the year. Geosyntec has also designed constructed wetlands for treatment of stormwater runoff and in other applications of implementing best management practices (BMPs) for many years. We have further used innovative approaches involving constructed wetlands for treatment of metals and petroleum-related compounds, and we are involved in several treatability and pilot-scale studies to evaluate the use of constructed wetlands to treat a variety of contaminants in groundwater. Goals of these projects have included treatment, as well as to create and restore habitat for aquatic and terrestrial vegetation and wildlife, stabilize shorelines and prevent erosion and sedimentation, and improve water quality by attenuation of nutrient, pollutant, and sediment loads. Project goals have also included providing educational and recreational opportunities.

Overview of Water and Natural Resources
Overview of Water and Natural Resources

Overview of Water and Natural Resources

Bobby Kreiner2026-09-23T13:32:29-06:00November 30th, 2001|Tags: Adrienne Miller, Adrienne Nemura, Alan Fowler, Amy Brooks, Amy Dzialowski, Andrea Braga, Barb Neary, Bill Murchison, Brandon Steets, Brian Valleskey, Chad Drummond, Chris Dickinson, Chris Robinson, Chris Wessel, Christie Hale, Damon DeYoung, Dan LaPorte, Daniel Haller, Daniel Lee, Dave Cook, David Bonnett, David Parkinson, Dogus Meric, Elizabeth van Warmerdam, Eric Smalstig, Eric Strecker, Ernest Ladkani, Eryn Torres, Ganesh Krishnan, George Hollerbach, Henry Haselton, James Graham, Jason Kerstiens, Jason Paul, jeffrey king, Jeffrey Schneider, Jeffrey Standish, Jeffrey Tyburski, Jeremy Yeglin, Jill Van Hulle, Joe Goldstein, John Barrett, John Knutson, John Merrill, Jonathan Allen, Jonathan Turk, Joseph Kula, Julia Roberts, Julie Chambon, Kathleen Harrison, Katie Fox, Ken Susilo, Kenneth jk Smith, Kevin Warner, Kim Williams, Kristin Reardon, Kristin Salzsauler, Kyle LaClair, Lee Mullon, Lisa Austin, Lonnie Mercer, Lori Carter, Mark Ellard, Mark Hanna, Mark R Willobee, Matthew Bardol, Matthew Wissler, Meggen Janes, Michael Hansen, Michael Nelson, Michael Scrafford, Najwa Pitois, Neven Kresic, Nicholas Muenks, Nigel Pickering, Patrick Galvin, Patrick VanDeWiele, Peter Bannister, Peter Mangarella, Phil Harvey, Philip Benson, Philip Reidy, Poppy Staub, Rica Enriquez, Rick Cramer, Robert Hartzel, Robert Potts, Robert Roseen, Scott Deitche, Scott Rowlands, Scott Sheridan, Scott Struck, Scott Walker, Stephanie Owen, Steve Layman, Steven McManus, Tamara Hebeler, Tara Rolfe, Terry Sullivan, Thomas Bristol, Todd Kafka, Todd Manson, Todd Snyder, Tom Fendley, Troy Hunt, Turgay Dabak, Victoria Cheplak, Wade Burcham, William Steier|

Geosyntec's water and natural resources practice is a collaborative group of nationally recognized scientists and engineers dedicated to balancing built and natural environments. Their practice specialties represent many disciplines, including geomorphology, ecology, biology, statistics, construction management, computer science, and engineering. Our practitioners are at the forefront of policy analyses, regulatory compliance, and technology applications that promote sustainable water resources management and ecosystem restoration.

Reimagine the Possible | Thierno Kane

Mule Creek Dam Reservoir Inundation Mapping

Urban Stormwater Management, Planning, & Design

Urban Stormwater Management, Planning, & Design

Modeling and Management of Stream Hydromodification Impacts

Modeling and Management of Stream Hydromodification Impacts

Wetland Delineation and Permitting

Wetland Delineation and Permitting

Environmental Impact Studies

Environmental Impact Studies

Constructed Wetland Treatment Systems

Constructed Wetland Treatment Systems

Overview of Water and Natural Resources

Overview of Water and Natural Resources

PRACTICES

MARKETS

ABOUT