Choose the way you want to learn!

This program will be presented simultaneously live, in-person and live online!
There is also the Self Study options. (see below)

* If you choose to attend the live in-person seminar, please note that the seminar manual will be provided as PDF document, which will be emailed to you shortly before the seminar. If you wish to pay $20 to obtain a paper copy of the manual, please call HalfMoon customer service at 715-835-5900.


8:00 – 8:30 am MDT
Morning Session
8:30 – 11:45 am MDT
Lunch (on your own)
11:45 am – 12:45 pm MDT
Afternoon Session
12:45 – 4:00 pm MDT


Presented by:
Allison Blodig, REHS
Dr. Sara Heger
Sheryl Ervin, P.G.

Overview of Onsite Wastewater Treatment Technologies
Technology of conventional and advanced wastewater treatment systems
Source evaluation: residential and commercial

Regulations in Colorado
Summary of treatment level approvals
Inspection, maintenance, and servicing requirements
Commercial vs. residential

Site Evaluation and Soil Treatment Design
Site and soil evaluation
Factors for selecting and sizing systems
Design considerations
Overview of options

Collection and Pretreatment Design
Collection system design options
Primary treatment design
Advanced treatment design
Disinfection options

Management and Troubleshooting
Developing maintenance plans
Monitoring of systems
Troubleshooting performance


Professional Engineers
6.0 PDHs

6.0 HSW CE Hours
6.0 AIA LU|HSW    (AIA credits only available for attending live Webinar or Seminar)

International Code Council
.6 CEUs (Sitework)


Continuing Education Credit Information
This seminar is open to the public and offers 6.0 PDHs to
professional engineers and 6.0 HSW continuing education
hours to architects in all states.

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)). Courses approved by the AIA/CES
qualify for Florida architects. Other states do not preapprove
continuing education providers or courses.

The American Institute of Architects Continuing Education
System has approved this course for 6.0 LU|HSW (Sponsor
No. J885). Only full participation is reportable to the AIA/CES.

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

In-person 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.

Completion certificates will be awarded to participants
who complete this event, respond to prompts, and earn a
passing score (80%) on the quiz that follows the presentation
(multiple attempts allowed).


Allison Blodig

Allison Blodig has been in the onsite wastewater treatment industry since 1997 and has worked most of her career in the wastewater treatment manufacturing industry. Ms. Blodig had her own consulting company for three years, specializing in decentralized wastewater regulatory consulting, market research, and training across the US. Currently she is an engineered systems specialist with Infiltrator Water Technologies, a leading developer of decentralized wastewater treatment technology. Along with a degree in Biology from Benedictine College in Atchison, Kansas, she has been a registered environmental health specialist and member of the National Environmental Health Association since 1996. She is president-elect of the National Onsite Wastewater Recycling Association and is the former chair of the Technical Practices Committee and Conference Committee. Ms. Blodig received the Women in Manufacturing award in 2012 and was the 2017 recipient of the Raymond Peat Lifetime Achievement award for outstanding achievement in the Kansas onsite wastewater field.

Sheryl Ervin P.G.

Sheryl Ervin has worked in the onsite wastewater industry for 17 years in both the public and private sectors including managing the Kansas onsite wastewater and source water protection programs and as a project manager for federal and state funded water quality grants. Prior to entering the onsite industry, Ms. Ervin worked for eight years in the environmental and petroleum industries. She has served on the SORA/COI and Kansas Small Flow Association boards, the SepticSmart Week Steering Committee and the NOWRA State Affiliates Committee and currently serves on the NOWRA Education Committee. Ms. Ervin received her B.S. degree in Geology at Missouri State University and and M.S. degree in Geology from New Mexico State University, and she is a licensed Professional Geoscientist in the state of Texas.

Dr. Sara Heger

Dr. Sara Heger is an engineer, researcher and instructor in the Onsite Sewage Treatment Program in the Water Resources Center and is an adjunct assistant professor in the Bioproducts and Biosystems Engineering Department at the University of Minnesota. For over 20 years, she has been conducting research and providing education and technical assistance to homeowners, small communities, onsite professionals, and local units of government regarding onsite wastewater treatment. Dr. Heger has presented in over 30 states and provinces regarding the design, installation and management of septic systems and related research. She is president of the National Onsite Wastewater Recycling Association and is the Education chair of the Minnesota Onsite Wastewater Association. Dr. Heger serves on the NSF International Committee on Wastewater Treatment Systems. She is also the chair of the Minnesota State Advisory Committee on Decentralized Systems. Dr. Heger has a BS degree in Biosystems and Agricultural Engineering and an MS degree and a PhD degree in Water Resource Science.

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: Colorado Onsite Wastewater Treatment Systems: Innovations, Commercial and Cluster Systems

Delivery Method: Live Online

Course Description: This course is designed to inform Colorado architects on how onsite wastewater systems work, are regulated, system options, and site requirements. It examines system technologies, treatment system selection and design, Colorado regulations and permitting, site evaluation, management and troubleshooting.

Learning Objectives:

Learning Objective 1:
Learners will be able to explain current wastewater treatment technology and operation processes, and they will be able to discuss recent scientific and technical advances.

Learning Objective 2:
Learners will be able to reference Colorado and federal onsite wastewater system regulations, explain how system regulation coordinates with surface and groundwater regulations, and identify permit requirements and procedures.

Learning Objective 3:
Learners will be able to compare and contrast commercial and residential treatment technologies, and they will be able to identify the criteria for treatment system selection and design paths.

Learning Objective 4:
Learners will be able to describe the necessity and process for evaluating sites and setting treatment goals for selecting wastewater treatment system selection and design, and they will be able to discuss the need to understand soil properties as part of the design process.

LUs: 6.0                                                                                              LU Type: LU|HSWs.

Prerequisites: Familiarity with septic systems and site evaluations

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date: 08/03/2024

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.