HalfMoon Education Inc. Knowledge Gets You There

Back to Search

Presenter: Lorilee Mather, P.E. and 3 more

Seminar Date:

Seminar Location: South Portland, ME

Doubletree by Hilton
363 Maine Mall Road
South Portland, ME 04106
Phone: 207-775-6161

This seminar is closed or full.


Registration:                        8:00 - 8:30 am

Morning Session:                8:30 - 11:45 am

Lunch (On your own):         11:45 am - 12:45 pm

Afternoon Session:             12:45 - 5:00 pm

Slope Mechanics and Movement 
A. Vytiniotis

   Types of slope movement and instability
      • Rock fall and rockslides
      • Slump
      • Mudslides
   Analyzing the stability of slopes
   Slope stability concepts
      • Reviewing geologic conditions
      • Examining soils and topography
      • Evaluating surface and groundwater conditions
   Evaluating types of slopes
      • Natural slopes
      • Engineered slopes
   Methods of slope stability analysis

Slope Stabilization Methods 
M. Penney, B. Nereson, L. Mather

   Global methods for soil slopes
   Surficial/veneer methods for soil slopes
   Global methods for rock slopes/faces
   Surficial/veneer methods for rock slopes/faces
   Existing vs. new slopes
   Combined soil and rock slopes

Preserving Streambanks, Shorelines,  
Drainage Channels, and Embankments
M. Penney, B. Nereson, L. Mather

   Slope destabilizing forces
   Preserving streambanks and streambeds
   Shoreline slopes (lake and ocean)
   Drainage channel slopes
   Dam/levee embankment slopes

Credit Information:

Who Should Attend

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

Professional Engineers
     7.0 PDHs

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

Floodplain Managers
     7.0 ASFPM CECs

     Voluntary Continuing Ed.

*Not mandatory in Maine

Continuing Education Credit Information

This seminar is open to the public and offers 7.0 PDHs to professional engineers in most states and 7.0 HSW continuing education hours to architects and landscape architects in most states. Educators and courses are not subject to preapproval for Maine engineers. Continuing education is not mandatory for Maine architects and landscape architects.

This course is approved by the American Institute of Architects Continuing Education System for 7.0 LU|HSW (Sponsor No. J885) and by the Landscape Architecture Continuing Education System for 7.0 HSW PDHs. Only full attendance can be reported to the AIA/CES and LA/CES. Visit www.halfmoonseminars.org for complete AIA information under this course listing.

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

The Association of State Floodplain Managers has approved this event for 7.0 CECs.

This seminar also offers a non-credit continuing education opportunity to contractors, but it has not been approved by any state contractor licensing entity.

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.


Lorilee Mather, P.E.

Senior Project Engineer/Project Manager, GeoInsight, Inc.

Ms. Mather is a professional engineer with licenses in several states (NH, ME, MA) and project manager with more than 25+ years of experience in a broad range of civil and environmental activities. She is a masters-level civil and water resources professional with diverse experience on both private and public projects including land development design; surface water modeling for hydroelectric projects, dam safety and inspections, dam breach and emergency action plans; stream crossing and stabilization design; and environmental permitting. Ms. Mather specializes in the interaction of precipitation, infiltration, and runoff, and their potential impacts on natural and built conditions, and she has completed design and permitting activities for a wide variety of projects to manage stormwater and stream/river flows and provide solutions for long-term stability.

Brian T. Nereson, P.E.

Senior Project Engineer/Project Manager, GeoInsight, Inc.

Mr. Nereson has a B.S. degree in Civil Engineering from the University of New Hampshire (2007) and is a professional engineer in New Hampshire, Massachusetts, Maine, Connecticut, Vermont, and Rhode Island. He possesses a wide range of geotechnical engineering expertise encompassing site characterization, reinforced soil structures, geosynthetics, embankments over soft soils, deep and shallow foundation design, groundwater control, retaining wall design, pavement design and rehabilitation, and construction oversight. Mr. Nereson also performs environmental remediation design and stormwater management, as well as contributing to staff development and corporate strategic planning.

Michael C. Penney, P.E.

Senior Engineer/Principal, GeoInsight, Inc.

Mr. Penney graduated from the University of New Hampshire in 1984 with a degree in Civil Engineering and has spent his last 33 years in private consulting working on geotechnical, environmental remediation, civil site design, and landfill projects. He specializes in the interaction of new and existing structures with soil, groundwater, and bedrock. His work assignments and responsibilities have enabled him to be directly involved in many thousands of investigation, evaluation and design projects throughout New England, and he has served as an expert witness on over 20 litigation cases. Mr. Penney is a professional engineer in New Hampshire, Massachusetts, Vermont, Connecticut, and Maine, and he is a licensed site professional in Massachusetts. He has been with GeoInsight since 1993 and is their director of engineering. In addition to direct senior management of projects and senior peer review, Mr. Penney’s responsibilities include steering GeoInsight’s business activities with a small group of majority shareholders, and working on business development and client management.

Antonios Vytiniotis, Ph.D., P.E.

Managing Engineer, Exponent

Dr. Vytiniotis is a managing engineer in Exponent’s Civil practice, a member of the Geo-Institute’s Deep Foundation and Computation Geotechnics committees and a regional director for the Society of Construction Law – North America. He has background in structural and geotechnical engineering, geotechnical earthquake engineering, and numerical analysis. Dr. Vytiniotis has worked on numerous projects in more than 20 states and multiple countries, assisting project owners, law firms, insurance companies and developers. His analyses consist of assessing soil improvement, soil-structure interaction, dam safety, causation of MSE wall failures, effects of adjacent construction (such as vibrations or pile driving), soil heave or settlements, pipeline installation, water intrusion, and backfill quality. He is experienced in evaluating slope stability, performing mechanical and flow-through-porous media finite element analyses and soil-structure interaction using various software. Additionally, Dr. Vytiniotis has performed research on the seismic response of pile-supported wharves, seismic slope stability, the effectiveness of prefabricated vertical drains (earthquake drains) and soil densification in reducing liquefaction risk, the effect of gravel drains in amplifying seismic accelerations, and numerical simulations of centrifuge experiments. In the past, Dr. Vytiniotis gained international experience in Greece and Switzerland, and was appointed lecturer at MIT.

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: Slope Stabilization and Landslide Prevention

Course Description: This seven-hour live lecture presentation examines slope mechanics and movement, slope stabilization strategies, and preserving stream banks, shorelines, drainage channels, and embankments.

Learning Objectives: 

Learning Objective 1:
Learners will be able to recognize and distinguish the types of slopes and the types of slope movement and instability.

Learning Objective 2:
Learners will be able to describe how geologic conditions, soils, topography, surface water, and groundwater impact the stability of slopes and how these factors can impact the decision of whether or not the slope is safe to develop.

Learning Objective 3:
Learners will be able to determine appropriate slope stabilization methods for different types of slopes in order to prevent slope failure, erosion and risk to structures.

Learning Objective 4:
Learners will be able to discuss methods to preserve stream banks, shorelines, drainage channels and embankments on development sites, thereby retaining the aesthetic and environmental value of rivers and lakes and preventing chances of flooding.

LUs: 7.0                                                                                              LU Type: LU|HSWs.

Prerequisites: Familiarity with site development.

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date: 08/02/2022

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.