Our Team

At SEC, we believe our clients are our greatest asset and our employees are our foundation. We want you to go into each project with confidence that it will be handled with the greatest care. Our culture is fundamentally based on adding value to any project we’re involved in, wherever we can, through innovative methodology and practical solutions.

With several green industry leaders on staff ready to serve you across the U.S., SEC will be there every step of the way. We’re dedicated to the progress of our clients, our industry and our employees. We invite you to take some time to learn more about our team members, listed below.

John Harsch


Cell: (620) 340-5612

Email: jharsch@sustainableenviro.com

As president of Sustainable Environmental Consultants (SEC), John Harsch brings to the business more than 20 years of experience in environmental practices, natural resources and conservation.


John leads SEC’s strategic planning, operations and business development to position the company as a frontrunner in the environmental arena. Since its inception, John has been instrumental in SEC’s growth.

Before joining SEC, John worked in the water quality and waste management sectors, solidifying his knowledge of regulatory compliance, stormwater best management practices, and carbon footprint reduction. John has an extensive background working in environmental compliance management and with local, state and federal environmental regulations.

John holds a bachelor of science degree in parks and recreation from Emporia State University and is a member of the International Erosion Control Association and US Composting Council. He is also a member of SEC’s Board of Directors.

Daniel Berges

Agricultural Engineer

Cell: (785) 207-0201

Email: dberges@sustainableenviro.com

Daniel Berges joined Sustainable Environmental Consultants (SEC) in August 2009 as an agricultural engineer.


Having worked in the agriculture industry for most of his life and in the engineering arena since 2005, Daniel brings a comprehensive knowledge of environmental compliance relating to livestock facilities. He specializes in livestock facility design and waste management, and has a vast understanding of design standards, statutes, and regulations associated with each facility in his portfolio.

Prior to joining SEC, Daniel worked with new and expanding Confined Animal Feeding Operations (CAFOs), ensuring each project followed stormwater best management practices (BMPs) and met all local, state and federal regulations. With years of field experience and demonstrated success, Daniel provides all of his clients with the confidence that their facility meets the highest standards.

Daniel holds a bachelor of science degree in agricultural engineering from Kansas State University, and has been a member of the American Society of Agricultural and Biological Engineers since 2002.

Shannon Lux

Operations Manager

Cell: (785) 289-0061

Email: slux@sustainableenviro.com

Shannon Lux joined Sustainable Environmental Consultants (SEC) in August 2011 and holds the position of operations manager. Shannon has been integral in expanding SEC’s business across the country.


Before joining SEC, Shannon spent nearly 25 years working for a building supply company managing production, scheduling, quality control, contractor relations, purchasing, and distribution logistics.

Shannon primarily ensures quality control over SEC’s certified manufacturing of Filtrexx® products. He also conducts routine safety reviews, trains employees, manages distribution logistics, and oversees products and sales. Shannon’s operations management skills and attention to customer needs have helped position SEC as a premier manufacturer of SiltSoxx in Kansas, Iowa and Texas.

Susan Francis


Cell: (620) 271-8067

Email: sfrancis@sustainableenviro.com

Technician Susan Francis’ background in livestock production, crop nutrient uptake, surveying and government programs gives her a refined grasp on even the most complex aspects of the environmental service industry.


Joining Sustainable Environmental Consultants (SEC) in March 2010, Susan possesses a strong appreciation for the convergence of technology and the outdoors, having worked for 19 years at the United States Department of Agriculture (USDA) and Natural Resources Conservation Service (NRCS).

After graduating from Fort Hayes State University, Susan served in many roles, including soil conversation technician, county and civil engineering technician, and supervisor of agronomists and engineers. Her extensive experience in irrigation scheduling, nutrient management plans (NMPs) and the design of terraces, diversions and waterways helps Susan assist clients from beginning to end.

Zack Rust

Biological Systems Engineer

Cell: (785) 282-0672

Email: zrust@sustainableenviro.com

With a bachelor’s of science degree in biological and agricultural engineering with an emphasis in machinery systems from Kansas State University, Biological Systems Engineer Zack Rust first joined Sustainable Environmental Consultants (SEC) as an intern in May 2013 and became a permanent team member after graduating from college in May 2014.


Zack brings a fresh approach to the industry and specializes site layout and design utilizing AutoCAD Civil 3D, overnight water balance testing and nutrient management plans, ensuring clients’ compliance with local, state and federal environmental regulations. He has completed training courses at Midwest CAD, most recently in January 2015. With this training, he is proficient in utilizing AutoCAD Civil 3D, focusing on surface creation and manipulation for surface grading and runoff control. Zack also uses data from the surveying method, LIDAR (Light Detection and Ranging) to build topography and shape file data to depict soil maps, streams and boundary lines. Through the use of this technology, Zack creates custom tailored plans unique to each client, whether he’s designing a new facility, facility expansion or an as-built assessment on a completed operation. The custom plans ensure client specific needs are met while still adhering to requirements set forth by state and federal regulatory agencies.

Having grown up working on his family’s small farm, Zack is able to blend appreciation for livestock and agricultural practices and his passion for engineering with SEC’s clients.

Zack has been a member of the American Society of Agricultural and Biological Engineers since 2013.

Samantha Bretz

Environmental Technician

Cell: (620) 355-1686

Email: sbretz@sustainableenviro.com

Agriculture is a way of life for Samantha Bretz. She grew up on a family farm near Lakin, Kansas, growing wheat and milo. Continuing with tradition, Samantha lives on her own farm now, running a small cow/calf operation with her husband. Samantha feels that there is something very rewarding about caring for the land and animals, watching them grow and harvesting the fruits of your labor.


Upon graduating high school, Samantha pursued a bachelors degree in agricultural business from Fort Hays State University. Throughout college, she worked at a greenhouse and dabbled with landscaping projects. When she graduated, she went on to work at a farmers co-op in their agronomy department where she drew field maps and wrote chemical and fertilizer formulas. Samantha joined the SEC team in 2017 as an environmental technician, focusing on Nutrient Management Plans, operational reporting, annual reports and quality control related to reporting.

Curtis Janssen

Professional Engineer

Since his childhood on a central Kansas farm, Curtis Janssen has always loved agriculture and the great outdoors. In 1982, he graduated from Kansas State University with a Bachelor of Science in agricultural engineering, and in 1989 he became a licensed Professional Engineer while building a career around the outdoors with the Natural Resources Conservation Service (NRCS). For more than 33 years, Curtis worked at NRCS in the state of Kansas, culminating with his role as the State Conservation Engineer, where he applied his engineering knowledge on the conservation of the state’s natural resources.


Curtis is passionate about our natural resources and enjoys conducting research, planning, designing and providing consultation in relation to them. With each project he has worked on, Curtis notes he has always enjoyed the positive impact his environmental work has on individuals and society as a whole. Building relationships and taking on new challenges is always exciting and stays true to Curtis’ nature to go beyond “getting the job done.” He brings his love of the outdoors and strong commitment to hard work to SEC, where he joined the team in August 2017 as a Professional Engineer.

Austin McClane

Manufacturing Associate

Austin McClane joined Sustainable Environmental Consultants (SEC) in May 2016 as a part time manufacturing associate. As a member of the manufacturing division, Austin assists in the production of Filtrexx® erosion control products and is responsible for equipment maintenance, inventory management and contractor training.


A graduate of Royal Valley High School in Kansas in 2013, he spent his first two years after high school at Midland University in Nebraska. From Midland, he transferred to Hutchinson Community College and graduated in 2017 with an associate of applied science in fire science. Upon receiving his degree, he pursued a position with the City of Topeka, Kansas, as a fireman, where he is able to work while also working for SEC.