Friday 30 July 2010

On Banning Plastic Bags - Part 2

A couple of weeks ago, in 'On Banning Plastic Bags', I posted on here a letter I sent to UK Secretary of State for the environment, Caroline Spelman, asking for details on her waste and plastic bag policies, along with the somewhat disappointing reply I recieved from her department, DEFRA.

This is the letter that I sent back following DEFRA's response:

Dear Mr. Hands,

Thank you for taking the time to read my letter and for your reply. However, I do not feel that you read my letter fully, or that you have answered my questions.

1. I am aware of Ms Spelman's current review of waste policies and the aim of this to move England toward a zero waste society. The first question I asked in my letter was regarding more detail on how Ms Spelman and Defra plan to achieve the ideal of a zero waste society. What waste policies are under consideration in order to achieve this aim? And how are they going to be structured? For instance, are you investigating the policies of other countries (e.g. Germany) to see how they have achieved what they have?

2. You say that the government's aim is to end the "needless distribution" of the single-use carrier bag. Please could you define for me the term, "needless distribution"? Your use of this term implies that there are circumstances under which the distribution of single-use carrier bags is necessary, a statement with which I would have to strongly disagree.

3. You write, “We would like to see the single-use carrier bag, issued free at the point of sale, become a thing of the past.” Excellent. But how do you plan to achieve this? You provide some interesting statistics further on in your letter regarding the voluntary agreement of a number of supermarket chains to reduce their carrier usage. You explain that the supermarkets involved have agreed to a 50% reduction and that these supermarkets account for 85% of the grocery market. Taking these two numbers together, it accounts for only a 42.5% reduction in carrier bags within the grocery market.

Firstly, this is less than a 50% reduction of carriers bags within the grocery market alone – while, as you say, those who have made this agreement may represent a large portion of the UK’s carrier bag usage, and while a 42.5% reduction is a good start (everything has to start somewhere, after all), this is still an extremely long way from the making the single-use carrier bag “a thing of the past”. How do you plan to make up the 57.5% shortfall?

Secondly, it is important to note that this 50% target is a pledge and only a pledge. It is not written in stone that the signatories will meet this target, and if they don’t meet it, there won’t be any consequences because it is not a legal agreement – it is a ‘pledge’. Thirdly, this pledge does not take into consideration retail outside the grocery market – what about book shops, gift shops, music shops, chemists, etc etc?

4. You write, "The key to reducing the number of bags we use is reuse of bags of all varieties." I take this to mean that the manner in which you plan to end "needless distribution" of the single-use carrier bag is by making them multiple use? I take this to mean that the government’s main plan to reduce carrier bags is simply to encourage people to re-use them? Re-use is a good initiative, and I would agree that it would need to be an integral part of any policy, but re-use on its own does not a policy make. And how do you plan to encourage people to simply re-use all their carrier bags? A lot of people are likely to embrace this idea, but without a more solid injunction, you will never achieve a 100% reduction through this method alone.

5. You write, "The results of this earlier agreement were a 26% reduction in numbers of bags distributed by participating retailers, and a 40% reduction in the environmental impact of carrier bags." Please can you tell me how this figure of a “40% reduction in the environmental impact” was obtained?

6. The Defra website link included in your letter does not work. Using this link simply takes me to a page that informs me that the page I was looking for no longer exists (“error 404”). Please could you provide me with the correct link.

7. Lastly, the question which I felt to be the main gist of my letter was whether or not Defra has any plans (or has considered) introducing either a tax or an outright ban on plastic bags. I provided with my first letter an example of the success of a plastic bag tax, and a list of regions throughout the world where a ban is already in place (also attached here). In your reply, you have deftly avoided providing a direct answer to this question. I would be grateful if you could give me an answer please. And if you are not able to answer this or any of my other questions, I would appreciate you forwarding my letter to someone who can.

With thanks,
Isabel Popple



And here is the second reply I recieved:

Dear Ms Popple

Thank you for your reply of 1 July.

We intend to publish the detailed Terms of Reference for the Review shortly along with a Call for Evidence. As the Terms of Reference has not been finalised, I cannot answer as to which policies we will be looking at.

It is recognised that there will always be circumstances where it will be necessary to use a single use bag. For instance, if your own re-usable bags are full, then a single use bag may be appropriate. However, the Courtauld Commitment pledges that single use bags are kept to a minimum.

The 50% reduction in plastic bags only applies to signatories of the Courtauld Commitment. As this is a voluntary agreement it is up to each company to decide on their own strategy for the aims to be achieved. Whilst this is a voluntary agreement, the Government has reserved the right to take steps if the terms of the agreement are not met, though this will be subject to the Review.

The Courtauld Commitment covers 85% of the market. The Association of Convenience Stores (mainly small shops) has agreed to a ‘second tier’ agreement for smaller retailers and others who were not party to the main voluntary agreement. This ‘second tier’ did not bind signatories to specific targets but included a pledge to reduce the number of bags they give out via appropriate measures. This approach could be pursued, though any decision will be subject to the Review.

The first voluntary agreement on carrier bags (2006-2008) aimed to reduce the environmental impact of all carrier bags by 25%. The Waste Resources Action Programme (WRAP) collected and analysed data from the retailers' procurement statistics and monitored sector progress. Data submitted by retailers was reviewed by WRAP to check for any major anomalies and ongoing trends.

The target of ‘25% reduction in the environmental impact of carrier bags’ was measured by looking at a reduction in the number of carrier bags issued and the amount of virgin plastic used, which provided a simple way to measure environmental impact. The participants achieved a 26% reduction in the total number of carrier bags used and a 40% reduction in the amount of virgin polymer used. The total weight of bags was also recorded and reported separately.

Lastly, you asked whether or not there are any plans to introduce either a tax or an outright ban on plastic bags, this will also be subject to the Review.

Yours sincerely,
David Hands
Customer Contact Unit
Defra

Sunday 18 July 2010

Degradable Bin Bags?

The biodegradability of biodegradable-classed plastics is a subject that I have a multitude of questions about. ‘100% degradable’ plastic products shout – but so often it turns out that this is not exactly true. For starters, they will often only degrade under very specific conditions and, secondly, ‘100%’ seems to be a description that is open to interpretation.

100%?
Take this photo (courtesy of Corbis), which shows how a biodegradable plastic fork disintegrates over a period of months. Cool huh? Ironically, though, the caption for the image on Corbis’ website reads ‘….. completely degrades’. Errr… Sorry to burst the photographer’s bubble, but there’s still quite a bit of visible material left in the final picture there, so I’m thinking it hasn’t ‘completely degraded’ at all. Maybe it’s no longer recognisable as a fork, but its basic materials are still pretty much in existence.

A biodegradable minefield
As far as I can tell, there are lots of different approaches that manufacturers of purportedly degradable plastics can take – some of them, I believe, are genuine; some not so. It’s certainly a minefield, and one that I’m still trying to find a safe path through, so I won’t go into a lot of detail here today. But, there are bio plastics that are completely composed of natural materials (rather than oil-based, though oil is, technically, a natural material). And then there are plastics that are made up of a web of traditional plastic molecules which are held together by degradable materials – the strands holding them together degrade, leaving lots of teeny tiny pieces of non-degradable plastic still floating around in the environment. The difficulty for us as consumers is figuring out which are really degradable, and which are pseudo-degradable.

And so to bin bags
Which brings me to the initial point of this particular post: degradable bin bags.

To be honest, degradable bin bags are a bit of a misnomer. This is because in order for fully biological bioplastics to degrade properly, they really need some good composting conditions: carbon, nitrogen, oxygen, heat and water. Without these, nothing will degrade – think of the permafrost men, frozen forever in virtually their original state. And in your average landfill, where most of our household bin bags wind up, these conditions are severely lacking. So even if you’re good and green and buy those special degradable bin bags, chances are they’ll never have the opportunity to degrade.

Unfortunately, Bron and I have yet to reduce our waste to a zero point – we’re not too bad, all told, but we still have our weekly deposit on the lawn for the bin men to collect, mostly thanks to the cat who, even in the summer weather, still steadfastly uses her litter tray. So when it came to deciding whether to use degradable bin bags or not, I really wasn’t sure whether there much point to it or not. Bron thought “no”, but I figured at least it’s slightly better than a completely non-degradable one. Off to Archie Browns I went, one of my local health stores, where they sell bags produced by Symphony Environmental.

The D2W additive
‘Fact,’ the packaging on these bin bags states. ‘This plastic really is 100% degradable. Fantastic!’

How? I wondered. ‘Our d2w® additive put into the plastic at the extrusion stage will make the finished product "oxo-biodegradable" so that it will degrade and disappear in a short timescale, leaving no fragments, no methane and no harmful residues,’ explains their website, www.degradable.co.uk

‘The degradation process is initiated at the time the polyethylene or polypropylene is extruded by the inclusion of a small amount of a special additive.’ So they still contain traditional polymers then? They’re not made from corn starch, or a similar alternative.

But wait, this is a good thing, they say, because it means the bags do ‘not need a biologically active environment to start degrading - this will happen even if the plastic is left in the open air! … For this reason in particular, d2w™ 'totally degradable' plastic is superior to 'bio-degradable' which requires the plastic to be in a biologically active environment (for example, by being buried in the ground) before the degradation process is initiated.’ Which gets us over the compostable-plastic-doesn’t-compost-in-the-landfill issue I suppose.

I’m really not sure what to think at this point. Is this stuff good or bad? Apparently the additive used speeds up the natural degradation of plastic that would otherwise take tens or hundreds of years, so that the bags quite quickly break down into flake-sized pieces. At this point, because the polymer chains have been reduced in length, oxygen is able to bond with the carbon in the chain, forming CO2. Is this just theory or does it actually happen in the environment? The next bit I don’t quite understand – the formation of CO2 further reduces the flakes in size which makes them ‘water wettable’. Water wettable? What does that mean? Despite my science degree, my biology and chemistry knowledge, I have never heard this term before. Apparently being water wettable means that micro-organisms can access the chemicals in the polymer chains.

Am I any the wiser? I still don’t know. It all sounds quite reasonable, yet I can’t help having my suspicions. Or am I just being negative? After everything I’ve read about how difficult it is for polymers to break down, this just sounds a bit too easy. I believe that the bags will break down into flakes, but I wonder how persistent those flakes ultimately are in the environment? Even if the bags don’t need composting conditions to get to this stage, thanks to the D2W additive, if the flakes then need micro-organisms to further degrade them, that does imply a composting situation – which, I mentioned earlier, won’t be found in a typical landfill situation.

The debate continues
Perhaps these bags aren’t the ultimate solution, but are they better than the standard bin bag? Is this ‘100% degrading’? What about the microscopic bits of plastic that wind up in the environment waiting for some happy micro-organism to munch on? When exposed to wider ecosystems, these are arguably more damaging to wildlife than more solid forms of the material are, as Professor Richard Thompson can attest. I am yet to be convinced by the eco-credentials of this particular brand of degradable plastic.

Thursday 1 July 2010

On Banning Plastic Bags

On 19th June, I sent the following letter to Caroline Spelman, the UK's new Secretary of State for the Environment:

Dear Caroline,

This week you called for the UK to become a zero waste society, an issue which I whole heartedly support.

I am currently researching and writing a book about plastic. Loosely titled ‘A Life Less Plastic’, it will chart the story of plastic, from its manufacture, to the myriad plastic products we find in our homes, to its disposal, and all of the environmental concerns surrounding it. I was therefore particularly interested in your comments about encouraging manufacturers to reduce their packaging materials, which are often comprised of single use plastics, and was hoping that you would be able to tell me more about this proposal and how you will achieve it.

As Environment Secretary, please could you also tell me what plans, if any, you have regarding plastic bags. Although plastic now features strongly in every aspect of the average westerner’s daily lifestyle, from the packaging on the food we eat, to the technology we use, and even the activities we undertake in our leisure time, the plastic bag is probably the most widely recognised form of plastic pollution. Many countries have already taken steps to ban single use plastic bags, with often astounding results, or to introduce taxes on them. The Republic of Ireland, for instance, introduced a tax on plastic bags in 2002, which resulted in a 90% reduction in plastic bag usage as well acquiring significant extra revenue for the government. Are you considering a similar tax, or an outright ban, for the UK? For your interest, I attach a list of worldwide bans and taxes on plastic bags currently in place.

I understand that you are a person who is very much in demand and with a heavy workload, but I would very much like to enter a conversation with you on these subjects. As you are aware, zero waste and plastic waste are subjects very much in the public sphere at the moment, and they are obviously on the new government’s agenda as well, and it is in the public’s interest – and in the interest of the environment and our swiftly depleting resources – to tackle these issues openly and quickly.

I look forward to hearing from you and learning more about your own and the government’s plans and thoughts on this important issue.

Yours truly,
Isabel Popple



And here is the reply I have just recieved:

Dear Ms Popple

Thank you for your email of 19 June to the Secretary of State. I have been asked to reply.

It is encouraging to hear of your interest in this issue. You may have seen that the Secretary of State, Caroline Spelman, has recently announced a full review of waste policies in England. The overarching purpose of the Review will be to ensure that the correct waste policies are in place to enable us to move towards a ‘zero waste society’.

In line with the European Union’s revised Waste Framework Directive, the Government's aim is to end the needless distribution of carrier and, over the longer term, we would like to see the single-use carrier bag, issued free at the point of sale, become a thing of the past. The key to reducing the number of bags we use is reuse of bags of all varieties. All bags have an environmental impact - reusing them as many times as possible and disposing of them in an appropriate way minimises this impact. This could include a final use as a bin liner – displacing the need for a new bag/liner to be used instead.

The Waste and Resources Action Programme (WRAP) monitor the number of bags given out by the main supermarkets, and will present their next full set of data this summer.

On 18 December 2008, Britain's leading supermarkets, represented by the British Retail Consortium (BRC), signed up to an agreement pledging a 50 per cent cut in the number of carrier bags given out by the end of May 2009, based on a 2006 baseline, and to aspire to a longer term reduction of 70 per cent. The agreement covered seven of Britain's major supermarket chains in England, Wales and Northern Ireland and targeted both paper and plastic single-use carrier bags provided by the supermarkets involved. The supermarkets committed to the agreement account for more than 85 per cent of the UK grocery market and, therefore, a significant proportion of the UK's carrier bag usage. Bags will still be available, but retailers will be introducing various measures to reduce the number they give out, and encourage consumers to reuse the bags they have - whatever sort of bags they are.

The voluntary agreement builds on an earlier agreement with 21 leading retailers to reduce the environmental impact of carrier bags by 25 per cent between May 2006 and December 2008. The results of this earlier agreement were a 26 per cent reduction in numbers of bags distributed by participating retailers, and a 40 per cent reduction in the environmental impact of carrier bags.

More information on WRAP’s work on reducing waste and increasing resource efficiency in businesses and public organisations can be found on its website at www.wrap.org.uk.

For more information on Defra’s programme on reducing waste arising from carrier bags, please visit our website at www.defra.gov.uk/environment/localenv/litter/bags/index.htm.

I hope this is helpful.

Yours sincerely,
David Hands
Customer Contact Unit
Defra


First reactions
My first response to the David Hands' reply is: did he actually read my letter?

"You may have seen that the Secretary of State, Caroline Spelman, has recently announced a full review of waste policies in England," he writes. Err, well, had he read my letter properly, he may have seen that an acknowledgement of this forms the opening sentence of my letter, "This week [Caroline Spelman] called for the UK to become a zero waste society." Ok, so maybe my comment doesn't directly refer to an overview of waste management policy, but I do think it demonstrates that I'm aware of the review and the Secretary of State's movements on it.

Second reactions
"The Government's aim is to end the needless distribution of carrier and, over the longer term, we would like to see the single-use carrier bag, issued free at the point of sale, become a thing of the past." Ok, that's a start. But how does he define "needless distribution", and how does the government actually plan to end this needless distribution?

"The key to reducing the number of bags we use is reuse of bags of all varieties." I take this to mean that the manner in which the government plans to end "needless distribution" of the single-use carrier bag is by making them, errr, multiple use? So, no bans, no taxes, just encouraging people to re-use them? Doesn't sound like a very solid plan really does it? And how are they going to encourage people to re-use them?

"On 18 December 2008, Britain's leading supermarkets, represented by the British Retail Consortium (BRC), signed up to an agreement pledging a 50 per cent cut in the number of carrier bags given out by the end of May 2009, based on a 2006 baseline, and to aspire to a longer term reduction of 70 per cent..." Some nice figures here, that might be enough to satisfy a lot of people with similar queries. But it rather feels like he is simply quoting figures he's been told to brag about, rather than having properly read my letter and considered the issues I tried to raise within it.

Are you kidding me?
"The results of this earlier agreement were a 26 per cent reduction in numbers of bags distributed by participating retailers, and a 40 per cent reduction in the environmental impact of carrier bags." A 40% reduction in the environmental impact of carrier bags? How on earth can he quantify or prove this figure? Where does this figure come from and how was it obtained?

And finally...
The Defra website link doesn't work. At least, not today anyway. Which means I am unable to look at "more information on Defra’s programme on reducing waste arising from carrier bags."