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Presenter: Steven Trinkaus, PE

Seminar Date:

Seminar Location: Nanuet, NY

Hilton Garden Inn Nanuet
Nanuet, NY 10954
Phone: 845-623-0600

This seminar is closed or full.


Registration:                       8:00 - 8:30 am
Morning Session:               8:30 am - 12:30 pm
Lunch (On your own):        12:30 - 1:30 pm
Afternoon Session:            1:30 - 4:30 pm

Understanding and Implementing Principles of Low Impact Development (LID)

   Urban environment and water quality
   Conventional development and stormwater management
   Drawbacks of conventional approaches
   Origins of LID
   Principles and benefits of LID

Low-Impact Development Hydrology Considerations

   Water cycle and site hydrology
   Defining hydrologic principles for LID
   Identifying regional hydrologic considerations
   Evaluating hydrologic outcomes
   Hydrologic tools for LID

Low Impact Development Site Planning

   Incorporating LID into common land development projects
   LID site planning tools
   Environmental Site Design (ESD)

Low Impact Development Structural BMPs

   Choosing and designing best BMPs
   Site investigation
   Bioretention systems
   Dry swales  
   Permeable pavements (porous asphalt, porous concrete, interlocking paver systems)
   Infiltration basins, trenches, underground systems
   Rain barrels
   Green roofs

Low Impact Development Economics, Construction,
and Maintenance Considerations

   Construction specifications
   Maintenance requirements

Low Impact Development Resources

   Incorporation of LID into land use regulations
   LID model ordinances (state and local)

Credit Information:

Who Should Attend

  • Architects
  • Engineers
  • Contractors
  • Landscape Architects
  • Floodplain Managers

Professional Engineers
     6.5 Continuing Ed. Hours

Architects & Landscape Architects
     6.5 HSW Continuing Ed. Hours
     6.5 AIA LU|HSW
     6.5 LA/CES HSW PDHs

Floodplain Managers
     6.5 ASFPM CECs

     Non-Credit Continuing Ed.

Continuing Education Credit Information

This seminar is open to the public and offers up to 6.5 continuing education hours to professional engineers and 6.5 HSW continuing education hours to architects and landscape architects in most states, including New York.

HalfMoon Education is deemed a New York-approved continuing education provider for engineers, architects, and landscape architects via its registration with the American Institute of Architects Continuing Education System (Regulations of the Commissioner §68.14(i)(2), §69.6(i)(2), and 79-1.5(i)(2)).

This event is approved by the American Institute of Architects Continuing Education System for 6.5 LU|HSW (Sponsor No. J885) and the Landscape Architecture Continuing Education System for 6.5 HSW PDHs. Only full attendance can be reported to the AIA/CES and LA/CES. Courses approved by the AIA qualify for New Jersey architects. Visit www.halfmoonseminars. org for complete AIA/CES information under this course listing.

HalfMoon Education is an approved continuing education sponsor for engineers in Florida, Indiana (License No. CE21700059), Maryland, New Jersey (Approval No. 24GP00000700). North Carolina, and North Dakota.

The Association of State Floodplain Managers has approved this course for 6.5 CECs.

This event offers a continuing education opportunity to construction contractors, but it has not been approved by any state with a continuing education requirement for contractors.

Attendance will be monitored, and attendance certificates will be available after the seminar for most individuals who complete the entire event. Attendance certificates not available at the seminar will be mailed to participants within fifteen business days.


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 is the 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.

Tuition Costs:

Standard Tuition: $289.00
Online Tuition (pre-registration): $289.00
Group Prices
3 or more people each: $269.00

Each registration includes one copy of a manual prepared by the seminar speakers.

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 (cesupport@aia.org 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: Low Impact Development

Delivery Method: Live

Course Description: This 6.5 hour live lecture presentation examines the principles of stormwater low impact development, hydrology considerations for low-impact development, site planning, structural best management plans, low impact development economics, construction and maintenance.

Learning Objectives: 

Learning Objective 1:
Learners will be able to discuss environmental and water quality threats in urban areas, identify the drawbacks of conventional approaches to address stormwater, and explain the principles and benefits of low impact development (LID) strategies.

Learning Objective 2:
Learners will be able to explain the science of the water cycle and site hydrology, as a foundation to understanding and implementing the objectives of low impact development and treating stormwater runoff as intended by nature.

Learning Objective 3:
Learners will be able to identify and explain the objectives and applications of structural best management practices, including bioretention systems, dry swales, permeable pavement, infiltration basins, rain barrels, and green roofs.

Learning Objective 4:
Learners will be able to describe the process of low impact development site planning and discuss the economics, construction and maintenance considerations of low impact development projects.

LUs:  6.5                                                                                             LU Type: LU|HSWs.

Prerequisites: Familiarity with stormwater manager practices.

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date: 10/18/2022

Complaint Resolution Policy:

Complaints regarding this course can be emailed to doug@halfmoonseminars.org 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.