Continuing Education Forum - Onsite Sewerage
We host free monthly online meetings to provide continuing education for Practitioners and Professionals in the BC sewerage industry.
Typically, we have a guest speaker to deliver a presentation on a specific topic followed with a Q&A opportunity regarding the presenter's topic and an open discussion about any issue that participants wish to raise.
Sessions are live, interactive and online. We use screen-sharing software (Zoom) to provide the visual presentation (PowerPoint etc.) with audio options by phone or by voice-over-internet.
This is an excellent continuing education opportunity for professionals and practitioners. You will be able to claim continuing education credits for EGBC or continuing professional development hours for ASTTBC.
What do we chat about? Here is an overview of recent forums:
Paul Blackett, P.Tech, ROWP, CESA provided an excellent presentation regarding his project for a large flow system under the Municipal Wastewater Regulation.
- A comparison of the Municipal Wastewater Regulation versus the Sewerage System Regulation.
- The enforcement framework under the MWR.
- Technical challenges fore this specific project.
Jim facilitated a presentation and group discussion regarding tanks..
- Design considerations and configurations; poly vs concrete, favorable configurations of septic tanks, shallow and long versus short and deep, single chamber vs two chamber tanks.
- Using pump vaults within septic tanks.
- Anti-floatation options and considerations.
- Advantages and disadvantages of various treatment products.
- Cold climate considerations.
Brent Dennis, P.Eng. provided an excellent presentation on a wide range of topics related to 'doing business better' in the onsite sewerage industry. Followed with a robust group discussion.
We explored the SPM Standards for assuring leak free tanks and piping and the SPM guidelines for water-tight testing. Then, Jackson Twa, ROWP provided an excellent presentation, showed us his equipment and procedures for vacuum testing - a quick and effective means of leak testing.
Jackson had a recent example of discovering and repairing a significant leak. An excellent discussion ensued - with participants sharing their experience with leaking tanks and piping, groundwater infiltration problems, and procedures for leak testing and repair.
Jim provided a presentation outlining the design challenges for two large systems with restaurant waste.
One of those systems involved the jurisdictional flow divide issue ... with multiple SSR systems on a single parcel, each under 22,700 L DDF - avoiding the Municipal Wastewater Regulation. Ian Ralston also gave a brief outline of his custom design for the winery wastewater at one of those sites.
Jim and the EQUIP team shared photos and documents outlining several challenging projects - with a focus on 'what went wrong?' and 'how to avoid similar trouble in future?'
As a follow up to the March 25 forum, we had a more detailed discussion regarding selection of treatment processes and hardware.
Other topics included source control and mitigation, flow equalization, the regulatory context for non-sewerage flows (winery waste is an interesting and recurring theme!).
We also focused on 'what does the SPM say?' about selection and specification of treatment.
We had a very productive group discussion regarding the regulatory framework, exploring the significant differences in the approaches to treatment of the Sewerage System Regulation versus the Municipal Wastewater Regulation, and the wide diversity in treatment requirements by Regional Districts and other local regulators within OCP's, local bylaws, covenants, etc.
We also explored the treatment technologies in common use, advantages and disadvantages of various treatment processes and considerations for selection of appropriate treatment hardware with regard to anticipated sewage characteristics.
The panel (Michael, Ian, Brent, Jim, Bruce) provided a presentation exploring the regulatory framework for First Nations sewerage and the unique considerations for design, installation and maintenance.
A robust group discussion followed, with participants contributing insights regarding high occupancy, high strength wastewater, maintenance considerations and development of maintenance competency within First Nations communities.
Jim Andersen, AScT, ROWP provided a presentation exploring design and installation challenges for systems with significant risk of freezing. Topics included insulation, piping configurations to minimize freezing, draining the pipe networks, heat tape, tank heaters, sleeved road crossings and other strategies to address cold climates.
Jeff Oland, P.Eng. prepared and delivered valuable contributions to the presentation. Bruce McColm, ROWP, added his insights to the presentation based on his considerable cold weather experience.
Very productive discussion followed with our usual panel (Michael, Ian, Brent etc.) and great participation from the large group (30+) of participants.
Brent Dennis, P.Eng, provided a presentation exploring the perceived pitfalls of the Regulation (SSR).
Briefly stated - Brent 'normalized' the negative aspects of the regulatory framework (all industries have similar issues) while highlighting the positive aspects (better outcomes for protection of health & environment and excellent opportunities for Practitioners and Professionals who do good work).
Ian and Michael provided insights regarding the distinction between soil percolation rate and soil permeability, the advantages and disadvantages of perc tests and permeameter tests. and procedures for in-situ testing.
Jim Andersen, AScT, ROWP provided a presentation outlining the PGA. Michael Payne, P.Eng, P.Geo and Ian Ralston P.L.Eng anchored the panel discussion and outlined the PGA guidance published by EGBC.
A great discussion ensued with participants.
We had an entertaining 'mock' debate to demonstrate a typical interaction with a client who resists pressure dispersal options. Jim took the 'don't want a pump' position and Oscar Long, ROWP supported the 'sometimes you need a pump' position.
Then the panel of EQUIP contributors discussed the underlying principles of uniform and non-uniform distribution to soil dispersal systems, benefits of small dose volumes, timed dosing etc.
Forum participants joined the discussion with anecdotes and insights regarding pros and cons of pressure dispersal.
We proposed a few questions for discussion, such as "which is best - grinder or solids handling pumps?", "in a small pump basin or a larger tank with reserve?" and "can we use sewage transfer basins to depart from septic tank setbacks?"
Don MacRae from Pump Tech Inc. was the primary presenter. The ensuing discussion by participants and the EQUIP team of contributors resulted in an excellent exploration of sewage transfer options.
Upcoming forums will address new topics. We invite your suggestions for continuing education topics. And we are looking for volunteers to provide presentations!!!!! Got an interesting project? Wanna share your specific expertise?
Use the form (below) to register for the next forum. You will receive an email with a digital link to join the online session using ZOOM video conferencing.
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