Arthurs
Seat Tip
I went to the packed information meeting about
the proposed tip on Arthurs Seat on the weekend. I wasn’t sure what to expect.
Surely the Mornington Council which proudly advertises that it’s "COMMITTED
TO A SUSTAINABLE PENINSULA" wouldn’t be interested in any proposal to turn
the disused quarry site, which is embraced by the Arthurs Seat State Park,
into a non recycle, non reuse dump and
run landfill for other councils? How wrong I was.
The speakers were professional and clearly very knowledgeable. They'd put in hours of time into their presentations, working out how to best explain the proposal. And it's far, far worse than I'd expected.
The speakers were professional and clearly very knowledgeable. They'd put in hours of time into their presentations, working out how to best explain the proposal. And it's far, far worse than I'd expected.
Night view from Arthurs Seat over Dromana and Safety Beach |
Mornington Peninsula is now described as Melbourne's playground because of the wonderful scenery, glorious beaches,
great natural spas, golf courses with stunning views, excellent wines, good
surf, fishing, state and national parks, boating and food, all relatively close
to the capital city.
The Arthurs Seat State Park, which flanks the proposed tip site, is valuable not
only for its koalas, wallabies, goannas and bandicoots but supports a wide
range birdlife which help maintain the areas health and
biodiversity. More than 25 species of plants are either rare or uncommon
on the Peninsula, and four are listed as threatened.
The State Park gives a glimpse into what
the region was like before white settlers came and found the land was good for market
gardens, farming, vineyards, spas and a multitude of fabulous tourist ventures.
Arthurs Seat is the backdrop for the bayside
towns of Rosebud, Dromana and McCrae. Near the proposed tip location are two
primary schools, organic farms and Diggers Seeds - a much loved and highly regarded source of heirloom and organic seeds and plants. This partially sets
the scene for the sense of betrayal locals feel that the Mornington Shire
Council would even consider this location as a viable option for a tip.
But it’s even more offensive than that.
Ten years ago, the entire Mornington Peninsula including the Westernport region
was nominated for, and proudly wears the mantle of being a proclaimed UNESCO
biosphere reserve.
This means that the area is considered to
be a living laboratory where people co-operate to develop better ways to manage
the earth’s resources to meet human needs,while conserving natural processes
and biodiversity. Conservation and sustainable development underpin the entire
concept, however participation is entirely voluntary. There has been wide
community support for the biosphere reserve and responsible stewardship is
encouraged across the entire area.
Zero Waste
Interestingly Peninsula Waste Management
(PWM) highlights responsible recycling in the header of their web site, yet at
the meeting, it was noted that there will be no facility for recycling at
all at the proposed tip, and all waste, including green waste will be dumped in together.
Unlike the current tip at Rye where recycling is encouraged, locals will be unable to take trailer loads of green waste to be mulched, or goods to be sorted for resale.
The Shire website states “MPS has a
significant opportunity to play a leading role in promoting sound waste
management practices, high levels of recycling services and innovative waste education
and leadership within the waste sector.” Elsewhere the term “best practice” is
used.
Maybe I've got the wrong end of the green wedge, but this proposal hardly reflects the name chosen for
the Mornington Peninsula Regional Waste Management Group - Peninsula Zero
Waste! Dumping unsorted waste, including asbestos, into a hole in the ground
which is set below the water table, lined with plastic and with pipes and pumps
to continually remove the water and liquid that will collect doesn't appear to be best practice, responsible stewardship, environmentally wise or
sustainable.
However, let’s continue.
How the liner works
The liner for this kind of tip can be
problematic too. It sounds neat for a small domestic fish pond, but the
requirement here is massive. Basically the liner, or membrane, is placed at the
base of the hole and up the very steep
sides to separate the waste from the surrounding ground and to prevent the toxic sludge entering the waterways (the mind boggles at how they do this). Pipes are laid out to pump out the wet stuff. (more here)
The wet substance is called leachate and it’s pumped to storage tanks where it’ll be
transported off site daily in 15 (?) tankers. It’s not nice stuff.
The waste is dumped on top of the
membrane. It gets heavy ... they estimate 70 – 100 trucks per day will lumber in and out dumping loads of unsorted waste - surely I got that figure wrong, that's an enormous number. The waste gets rained on adding even more weight; assorted chemicals,
solvents, paints etc wash around and out of those containers that were thrown “away”. They mix together and create new and interesting potions which get pumped out.
Unlike the pond or swimming pool at home which can be emptied with some difficulty, then repaired, this membrane cannot be repaired. If it becomes worn, if there are abrasions, holes or leaks of any kind, it's impossible to remove what's been dumped on top and patch the liner.
The pipes which have been meticulously laid to collect the water and wet debris are likewise unable to be repaired, unclogged or cleaned. Would you use the word "never" when discussing the possibility of a leakage into creeks and waterways?
What gets tipped and who does the tipping
I heard at the meeting that it’s estimated
that 70% of the landfill to be dumped will come from outside the Shire of
Mornington. It’ll include, but not be limited to “solid inert waste, usually
generated by industry, such as packaging and building materials”. It sounds
inocuous enough stated like that, and of course we can be confident that no
unscrupulous, or lazy people would sneak in the odd toxic by-product from their chemical factory over in Dandenong can’t we? Of course it'll all be sorted before it gets dumped!
Then of course we have the standard nasties included in household waste. Unfortunately, not everyone composts their organic refuse which will mix in with discarded pongy “disposable nappies”, and bottles containing household cleaning chemicals such as bleach and ammonia.
Known toxins in discarded containers of common garden fertilisers and insecticides will be added to this complex slurry. (Please, for the health of our soil, insects and
bees, go organic!) Some materials will decompose relatively quickly,
others including the convenient disposable nappies can take up to 500 years,
and polystyrene can reportedly take over a million years to decompose.
We can do so much better. From the Shire
website: “The Shire contrator managing the Rye Waste Disposal Centre, and the
Shire’s other waste transfer stations, is required to meet stringent waste
diversion targets. Waste is sorted and markets have been developed to avoid
taking much of this waste to landfill. In the last year 58% of hard waste was
diverted from landfill. This is significantly ahead of the diversion rates
being achieved anywhere in Victoria.” The proposed site won't have this service.
Waste transfer stations work and locals have embraced them, sorting trailer loads of household rubbish into various on-site areas for reuse. I understand that a waste processing plant is likely to be developed in Hallam which is within a reasonable distance. Yet, this proposal is to allow garbage from that area to be dumped here trusting that it'll be pre-filtered and sorted. No doubt it's cheaper to dump than sort and process. But it's not responsible.
Unpleasant odours?
The smells, gasses and dusts from this
delectable mix will of course be well contained even on hot, humid or windy
mid summer days. How do I know? We’ve been assured by PWM the smells won’t travel! They'll stay within the boundary of the site and not set our noses twitching with displeasure. These well behaved smells will know how to act and have no doubt read and understood this requirement.
And
in 20 or 30 years when the quarry is filled to the brim with some decidedly
unpleasant refuse, (remember, a significant proportion having been sourced from
outside the Shire) it’ll all be covered with a metre or so of soil and be nearly transformed back
to the original appearance! Yaay. No noxious fumes, no gasses, no leaching, no
awkward, unfixable dribbles from aged liner or pipes. No problems!
As for the local wildlife, the creatures
which live nearby in the state park. I’m sure they’ll be fine with a bit less
habitat, it’s not as if they owned it anyway. It’s possible the koalas won’t even notice
the removal of some manna gums, their preferred food source.
As for the known
fire hazards in a tip of this nature, and especially as it's embraced on two sides by an iconic
State Park, with a school nearby – it doesn’t bear thinking about.
Leachate – the not so nice byproduct
One of the issues which was discussed in
some detail is the possible leaching of the byproducts of the tipped waste into
the surrounding land and water table, and eventually into Sheepwash Creek and
Port Phillip Bay.
Comfortingly, according to PWM, “The
principal components of leachate are nitrogen species such as ammonia and
salts, like table salt. … The Toxicity of landfill leachate is comparable to
that of water draining from a septic tank.” That's reassuring.
However, according to Wikipedia, leachate
is a liquid that contains harmful substances which are likely to become putrid.
I mentioned some of the nasties that get dumped domestically; then there's waste from chicken processing plants, farms and various manufacturing
businesses. This leachate is clearly
not going to be equivalent to regular table salts!
More from Wikipedia: “All membranes are porous to some limited extent so that over time
low volumes of leachate will cross the membrane.” I’m partially reassured that
“they should never have a measurable adverse impact on the quality of the
receiving groundwater.” But unsettled by “A more significant risk may be the
failure or abandonment of the leachate collection system. Such systems are
prone to internal failure as landfills suffer large internal movements as waste
decomposes unevely and thus buckles and distorts pipes.”
Distressingly, the more I read about leachate, the more it sounds like something you wouldn’t want entering Port Phillip Bay or in trucks trundling past a local primary school umpteen times per day.
The PWM literature states that “there will never be a leachate discharge to any creek.”
“Never”. Wow, that's supremely confident. I'd be much more reassured by a statement along the lines of "in the unlikely event of a leak, we have x, y and z process in place to respond immediately and without hesitation." At least then I'd know they'd thought about how to respond. Never alerts me to the fact that a response hasn't even been considered.
A trait I've noticed with some sectors involved with dangerous substances or toxic byproducts, (such as with fracking, oil pipelines and nuclear waste,) is the ability of those involved to downplay concerns and over-estimate their competence, the state of their equipment and ability to respond to any incident promptly and effectively. Unfortunately the path of overconfidence is well worn and the years or decades of suffering by those living nearby is minimised and forgotten as the next "unexpected" disaster unfolds.
At this stage I begin to wonder if there could be
any adverse effect from an earth tremor associated with Selwyn Fault. This wasn't mentioned at the meeting, so perhaps not.
The Peninsula expects increased severe weather events including extremely heavy rains
associated with climate change. The risk of increased flooding is anticipated. Will the pumps designed for current “highest recorded flows” be up to the
challenge of future inundations?
Under what circumstances could the pumps fail? Never?
If there is any overflow or leak, the leachate will find its way into Sheepwash Creek and from there into Port Phillip Bay to be absorbed by the shellfish being
farmed locally. As for the businesses close by which have worked hard to gain
their organic certification – I guess they’ll be considered an inconvenient
offsite irritant when they complain that airborne dust (which didn't quite manage to get tucked in at night) carrying tiny fibres
and toxins from the waste are affecting their livelihoods.
There's a petition at: http://www.communityrun.org/petitions/save-arthurs-seat
Further information including how to write a submission to the EPA, and place an objection to council and local MP is at http://savearthursseat.com/
If you haven't seen the Story of stuff it's well worth watching.
....
Further information:
http://www.dse.vic.gov.au/parks-and-reserves/about-parks-and-reserves/biosphere-reserves
Biosphere http://www.biosphere.org.au/documents/nomination/zones.pdf
http://www.biosphere.org.au/aboutus.html
http://greenliving.lovetoknow.com/Environmental_Problems:_Landfills
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posted by Sue Travers
posted by Sue Travers