Webinar instructions will be emailed before the date of the webinar.
Please log into the webinar 15 – 30 minutes before start time.

Tuesday, September 26, 2023
8:30 am – 5:00 pm EDT

Presented by: Steven Trinkaus, PE

Understanding Stormwater Permit Requirements and Procedures

  • Background and development of national and state regulations and permit requirements:
    • Federal Clean Water Act and Maryland stormwater regulations
  • Activities exempt from construction general stormwater permit requirements
  • Complying with NPDES and Maryland Department of the Environment requirements
    • Notice of intent requirements
    • What the permit covers and does not cover
    • Application process
    • General requirements and standard conditions
    • Implementing, monitoring and assessing stormwater pollution prevention plans (SWPPPs)

Developing Stormwater Pollution Prevention Plans (SWPPP)

  • Justification for ESD
  • General performance standards
  • Environmental Site Design (ESD)
    • Preservation of natural features and conservation design
    • Reducing impervious cover
    • Stream daylighting
    • Conservation of natural areas
    • Riparian buffer and filter strips
  • Erosion control plans
  • Plan review process, obtaining plan certification

Choosing Appropriate Storm Water Best Management Practices (BMPs)

  • Stormwater management planning
  • Sizing criteria
  • Green management techniques
    • Vegetated swales
    • Stormwater planters
    • Disconnected impervious areas
    • Rain barrels/cisterns
  • Bioretention (aka rain gardens)
  • Porous pavements
  • Green roofs
  • Proprietary practices

Developing Plans for Inspection, Monitoring, Maintenance and Recordkeeping

  • Understanding the science and terminology of stormwater management and monitoring
    • Importance of soils
    • Types of soil tests, the how and why
    • Non-point source pollutants
    • Rainfall and hydrology
    • Runoff curve numbers and time of concentration or TR-55
  • Implementing monitoring plans
  • Reviewing stormwater BMP case studies

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:
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Web Browser:
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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
7.0 PDHs

7.0 HSW CE Hours

Floodplain Managers

Landscape Architects
7.0 HSW CE Hours
7.0 HSW PDHs

International Code Council
.7 CEUs (Sitework)

Certified Planners

Continuing Education Credit Information

This seminar and concurrent webcast are open to the public and are designed to qualify for 7.0 PDHs for professional engineers, 7.0 HSW continuing education hours for licensed architects, and 7.0 HSW continuing education hours for landscape architects licensed in Maryland. Professionals seeking continuing education credits in other states may be able to claim the hours earned at this event; please refer to specific state rules to determine eligibility.

HalfMoon Education is an approved continuing education sponsor for engineers in Maryland.

The American Institute of Architects Continuing Education System has approved HalfMoon Education as a sponsor of continuing education (Sponsor No. J885). This course has been approved for 7.0 HSW learning units. Only full participation is reportable to the AIA CES.

This course has been approved by the Association of State Floodplain Managers for 7.0 CECs for floodplain managers.

The Landscape Architecture Continuing Education System has approved this course for 7.0 HSW PDHs. Only full participation is reportable to the LA CES.

The International Code Council has approved this event for .7 CEUs in the specialty area of Sitework (Preferred Provider No. 1232).

HalfMoon Education is an approved CM Provider with the American Planning Association. This course is registered for CM | 7 for Certified Planners. 

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 Credits

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 preapprovals may be available for the on-demand format upon request:

7.0 HSW LUs (AIA)


Steven Trinkaus, PE

Principal at Trinkaus Engineering, LLC, in Southbury, CT

Mr. Trinkaus is an internationally recognized expert in the field of low impact development, having presented at many ASCE/EWRI international conferences and many other regional conferences and workshops on LID and water quality issues. He has been an invited presenter and consultant in Taiwan, China, and South Korea. He has also presented on Sustainable Stormwater at the University of St. Andrews in Scotland. Mr. Trinkaus has written LID design manuals for the Towns of Tolland, Plainville, Harwinton, East Granby, and Morris, Connecticut. He has designed many types of LID treatment systems for a variety of residential and commercial applications. Mr. Trinkaus is chair of the EWRI LID Guidance Document Task Committee and primary author of the Committee’s national guidance document on adopting LID standards. Mr. Trinkaus is a licensed professional engineer in Connecticut and Maryland. He received a Bachelor of Science degree in Forest Management in 1980 from the University of New Hampshire. He has more than 38 years of experience in the land development field, more than 19 years of experience designing low impact development treatment systems, and six years of experience writing LID regulations and design manuals.

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: Maryland Stormwater Management 2023

Delivery Method: Live Online

Course Description: This seven-hour course will assist design professionals with planning, implementing, and monitoring stormwater management in Maryland in compliance with federal and state regulations. The course begins with an analysis of applicable permit and NPDES requirements, then turns to the development of stormwater pollution prevention plans (SWPPP). The course focuses on stormwater BMPs, particularly green infrastructure such as vegetated swales, porous pavement, and green roofs. The course concludes with an evaluation of plans for inspection, monitoring, maintenance, and recordkeeping.

Learning Objectives:

Learning Objective 1:
Learners will be able to reference and comply with Federal Clean Water Act, the National Pollution Discharge Elimination System requirements, and the Maryland Department of Environment regulations.

Learning Objective 2:
Learners will be able to describe the principles and purposes of Environmental Site Design (ESD), such as the preservation of natural features, reducing impervious cover, stream daylighting, and conservation.

Learning Objective 3:
Learners will be able to choose stormwater best management practices, including green infrastructure and low impact development techniques such as porous pavement, green roofs, bioretention, rain barrels, vegetated swales, and more.

Learning Objective 4:
Learners will be able to develop and implement plans for site inspection, monitoring, maintenance, and recordkeeping.

LUs: 7.0                                                                                              LU Type: LU|HSWs.

Prerequisites: Experience with site development

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date: 07/26/2026

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

Seminar Price: $319.00

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