September Technical Seminar for Members

The ACLCA NSW 2022 technical seminar series continues this month with our next presentation on Wednesday 28th September.

As with all of our technical seminars, this is being run as a FREE in-person event and also an online webinar via MS TEAMS.  


Challenges with Dredging Acid Sulfate Soils - Phillippa Biswell, Sutherland Shire Council


5.30pm drinks and nibbles*, 6.00pm presentations begin


WSP - L26, 680 George Street, Sydney. 

Registrations close:

COB Monday 26/9.


Challenges with Dredging Acid Sulfate Soils

Councils with rivers or waterways are faced with the ongoing battle of maintaining navigational channels and functioning stormwater systems, restoring creeks and waterways. Ongoing sedimentation through natural sediment movement, rapid movement during storms, stormwater flows, erosion or development continuously clog up our waterways. Much of this maintenance is achieved through one off or regular dredging. Dredging and disposing of sands, silts and sediments is problematic enough. Add to that mix, acid sulfate soils and contaminants and the reuse or disposal options decrease significantly and management of the dredged material becomes more involved and expensive. This presentation will discuss the challenges involved with dredging acid sulfate soils and contaminated acid sulfate soils and review case studies on the handling and disposal of dredged materials on various projects.


Phillippa works in the Environmental Science Unit at Sutherland Shire Council on various environmental projects often dealing with stormwater, erosion and sedimentation issues, contamination, acid sulphate soils, and creek restoration as well as the associated aspects such as flora, fauna and water quality that tie into these issues. In the 18 Years she has been working for Sutherland Shire Council, she has been involved in dredging of the Georges River, the Port Hacking River, approaches to wharfs, canals, creeks, stormwater drain outlets and sedimentation ponds to improve navigation, habitat and flooding. She has explored many opportunities to reduce costs and impacts on the environment and increase waste reuse in order to be able to deliver a better outcome for the community.


As usual this is a FREE event for members only, however members must register in order to attend in person so that adequate arrangements can be made for catering and seating.  Please be mindful that catering is organised according to the number of bookings for each event, so if you register to attend and are then no longer available, please give 2 business days’ notice of your cancellation.  We understand that this won’t always be possible.


Members attending the event in person

Members must register to attend ACLCA NSW events in person.  Registration is only necessary if you are attending in person, not online.  


The webinar link will be emailed to ACLCA NSW members on our email distribution list.  If you do not receive emails directly from ACLCA NSW, please email us to be added to the list.


COVID-safe Protocols

Members are reminded that they cannot attend ACLCA NSW events if they have any cold or flu symptoms, have had a positive PCR or RA test in the last 7 days, are awaiting the results of a PCR test or are required to isolate due to being a contact of a positive COVID-19 case. 


CPD Points

As with all ACLCA NSW technical seminars/webinars, you can accrue CPD points for attendance at this event.  However if you are joining the webinar hosted by MS TEAMS via the app or browser or login as a guest, your name will not appear on the attendance list so you will need to type your name and company into the chat option before the event finishes in order for us to note this for CPD purposes.  Members are reminded to keep a copy of the registration receipt for their personal CPD records.


*attendees please advise of any dietary requirements



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