Webinar instructions will be emailed before the date of the webinar.

Please log into the webinar 15 – 30 minutes before start time.

Wednesday, December 15, 2023 
9:00 – 11:00 am CST

Presented by: Kurt Dryden, Scott Gorneau and Robert Roseen


Defining bioretention/biofiltration, its purposes and benefits

  • Purposes of these systems: filtration, biological treatment and infiltration
  • Different types – non-proprietary and proprietary
  • Applications
  • Identifying potential sites and considerations given to topography, soils, drainage, utilities, etc. for these systems

Bioretention/Biofiltration system design

  • Sizing
  • Components and materials
  • Construction
  • Designing a system for a residential or small commercial site


Webinar Instructions

All attendees must log-on through their own email – attendees may not watch together if they wish to earn continuing education credit. HalfMoon Education Inc. must be able to prove attendance if either the attendee or HalfMoon Education Inc. is audited.

Certificates of completion can be downloaded in PDF form upon passing a short quiz. A link to the quiz will be sent to each qualifying attendee immediately after the webinar. The certificate can be downloaded from the Results page of the quiz upon scoring 80% or higher.

Webinars are presented via GoToWebinar, an easy-to-use application that can be run on most systems and tablets. Instructions and login information will be provided in an email sent close to the date of the webinar. It is highly recommended that you download, install and test the application before the webinar begins by clicking on the link in the email.

GoToWebinar App requirements:
Windows 7 – 10 or Mac OSX Mavericks (10.9) – macOS Catalina (10.15)

Web Browser:
The two most recent version of the following browsers:
Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge
Internet Explorer v11 (or later) with Flash enabled

Internet connection: Minimum of 1Mbps       Hardware: 2GB RAM or more

For more information, visit the Support section at


Professional Engineers:
2.0 PDHs

2.0 HSW CE Hours 

2.0 LU|HSW*

Landscape Architects:
2.0 HSW CE Hours 

2.0 HSW PDHs*

Floodplain Managers:

* Live course approval. Pre-approval for on-demand format may be available upon request.
** Live course approval. Not approved for on-demand format.
*** This course is not approved in New York; please refer to specific state rules to determine eligibility.


Continuing Education Credit Information

This webinar is open to the public and is designed to qualify for 2.0 PDHs for professional engineers, 2.0 HSW continuing education hours for licensed architects, and 2.0 HSW continuing education hours for landscape architects in all states that allow this learning method. Please refer to specific state rules to determine eligibility.

HalfMoon Education is an approved continuing education sponsor for engineers in Florida (Provider No. 0004647), Indiana (License No. CE21700059), Maryland, New Jersey (Approval No. 24GP00000700) and North Carolina (S-0130). HalfMoon Education is deemed an approved continuing education sponsor for New York engineers and architects via its registration with the American Institute of Architects Continuing Education System (Regulations of the Commissioner §68.14(i)(2) and §69.6(i)(2)). Other states do not preapprove continuing education providers or courses.

The American Institute of Architects Continuing Education System has approved this course for 2.0 HSW LUs (Sponsor No. J885). Only full participation is reportable to the AIA/CES.

The Landscape Architecture Continuing Education System has approved this course for 2.0 HSW PDHs. Only full participation is reportable to the LA CES.

This Association of State Floodplain Managers has approved this course for 2.0 CECs for floodplain managers. 

Attendance will be monitored, and attendance certificates will be available after the webinar for those who attend the entire course and score a minimum 80% on the quiz that follows the course (multiple attempts allowed). 

On-Demand Credit Information

The preceding credit information only applies to the live presentation. This course in an on-demand format may not be eligible for the same credits as the live presentation; please consult your licensing board(s) to ensure that a structured, asynchronous learning format is appropriate. The following pre-approvals may be available for the on-demand format upon request: 

2.0 HSW LUs (AIA) 
2.0 HSW PDHs (LA CES) 


Kurt Dryden

VP of Organics at Greenrise Technologies

Mr. Dryden attended Western Kentucky University where he earned his undergraduate degrees in both agriculture and accounting. With 10+ years spent in the golf course industry, soil structure has been a big focus of his career. Coming to Greenrise Technologies in 2016, he took that passion for soils and dove into the development of effective bioretention media. His goal is to make Greenrise Technologies the leader in stormwater compliance. In his free time, he enjoys hunting, fishing, and golfing. He resides in Springfield, TN with his wife Emily and their two children, Cooper and Caroline.

Scott Gorneau, P.E.

Vice President, Convergent Water Technologies

As vice president of Convergent Water Technologies, Mr. Gorneau is responsible for offering innovative green infrastructure/low impact stormwater solutions that enable new applications and raise the bar on performance, cost effectiveness, and verification. Mr. Gorneau previously served as national manager of ACF Environmental/Ferguson Waterworks and as regional vice president for FABCO Industries where he was responsible for engineering design, specification, and installation of manufactured stormwater management systems. He earned a B.S. degree in Biological Systems Engineering and an MS degree in Agricultural and Biological Systems Engineering from the University of Nebraska-Lincoln which provided the necessary knowledge for him to launch his career into the technical sales and specified engineered products industry. He spent the subsequent time since graduation gaining experience and expanding his knowledge of the industry on a wide variety of civil and environmental engineering design projects for private and public sector clients. Mr. Gorneau is a registered professional engineer in Maine and New Hampshire, and he is a Maine certified stormwater inspector. He has been a member of the American Society of Civil Engineers (ASCE), serving as section president in 2014.

Dr. Robert M. Roseen, P.E.

Principal and Owner, Waterstone Engineering, PLLC

Dr. Roseen is a recognized industry leader in green infrastructure and urban watershed renewal, and he is the recipient of an Environmental Merit Award by the US Environmental Protection Agency Region 1. He consults nationally and locally on stormwater management and planning and currently leads one of the first-in-the-nation integrated planning efforts in coastal New Hampshire. He directed the University of New Hampshire Stormwater Center for 10 years and is well versed in the practice, policy and planning of stormwater management. Dr. Roseen has 20 years of experience in the investigation, design, testing and implementation of innovative approaches to stormwater management. His broad area of expertise includes water resources engineering, stormwater management, low-impact development (LID) design, porous pavements, nutrient and TMDL studies, stream restoration and erosion and sediment control. Dr. Roseen has led the technical analysis of numerous studies examining land use and climate change impacts on municipal flooding. He has participated in many significant and award winning green infrastructure projects.

AIA Info

AIA Provider Statement:

HalfMoon Education Inc. is a registered provider of AIA-approved continuing education under Provider Number J885. All registered AIA/CES Providers must comply with the AIA Standards for Continuing Education Programs. Any questions or concerns about this provider of learning program may be sent to AIA/CES ( or (800) AIA 3837, Option 3).

This learning program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.

AIA continuing education credit has been reviewed and approved by AIA/CES. Learners must complete the entire learning program to receive continuing education credit. AIA continuing education Learning Units earned upon completion of this course will be reported to AIA/CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.

Course Title: Bioretention System Design

Delivery Method: Live Online

Course Description: This course examines the design of bioretention systems that are used as a stormwater management tool to retain water, naturally clean it, and help with flood control.

Learning Objectives:

Learning Objective 1:
Learners will be able to explain the importance of understanding soil properties in the design of bioretention systems.

Learning Objective 2:
Learners will be able to explain the importance of understanding groundwater conditions in the design of bioretention systems.

Learning Objective 3:
Learners will be able to determine what soil tests are required for designing bioretention systems.

Learning Objective 4:
Learners will be able to describe how to design bioretention systems for various soil types, slope conditions, and for storms greater than the water event.

LUs: 2.0                                                                                              LU Type: LU|HSWs.

Prerequisites: Knowledge of site development and earthwork techniques

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date: 01/20/2024

Complaint Resolution Policy:

Complaints regarding this course can be emailed to or by calling (715) 835-5900. A HalfMoon Education representative will respond within 72 hours to resolve the complaint, which will include, but not limited to, access to another CE activity at no or reduced cost or a full or partial refund. Each instance will be resolved on a case-by-case situation.