What does Nitrogen Dioxide do to Children’s Lungs?

What does Nitrogen Dioxide do to Children’s Lungs?

For those tempted by the populist media in to believing that ULEZ is a restriction on their freedoms, they must surely live in ignorance of the scientific evidence that proves how tailpipe emissions including nitrogen dioxide are permanently damaging children’s lungs.

Nitrogen Dioxide an Acid in the Making

Nitrogen dioxide (NO2) can contribute to the acidification of children’s lungs. Here’s how:

  • Formation of Nitric Acid: When NO2 interacts with moisture in the lungs, it can react to form nitric acid.
  • Acidic Environment: Nitric acid is a strong acid. Its presence in the lungs can disrupt the delicate balance of the lung’s environment, making it more acidic.

Why is lung acidification harmful?

  • Damage to Lung Tissue: An acidic environment can damage the delicate tissues of the lungs, leading to inflammation and irritation.
  • Impaired Lung Function: Acidification can interfere with the normal functioning of lung cells, affecting their ability to exchange oxygen and carbon dioxide effectively.
  • Increased Susceptibility to Infections: An acidic environment can weaken the lung’s defenses against infections, making individuals more vulnerable to respiratory illnesses.

How does acidification of the lung affect children?

Nitrogen dioxide (NO2) is one of a number of pollutants that can lower air quality harmful air pollutant that can have several negative effects on children’s lungs:

  • Respiratory Infections: NO2 can irritate the lungs and make children more susceptible to respiratory infections like colds, flu, and pneumonia.
  • Asthma: Children with asthma are particularly sensitive to NO2. Exposure can trigger asthma attacks, worsen symptoms, and even lead to the development of asthma in some cases.
  • Impaired Lung Development: Studies suggest that long-term exposure to NO2 may impair lung development in children, potentially leading to reduced lung function and increased respiratory problems later in life.
  • Increased Hospitalizations: Children exposed to high levels of NO2 are more likely to be hospitalized for respiratory problems.

So why do people object to ULEZ?

There various instance of Low Emission Zone expansion that have become very contentious across the country , but given the above evidence why is this the case? Surely protecting the health of children, particular given that residual effects of impaired lung development can last a lifetime?

This is down to the politicisation of issue, any populist will use a wedge issue such as this to drive division and hopefully pick up more votes in the process.

So my main two take outs from NO2 / Children’s lung post is a psychological / political ones, what is the depth of the cognitive dissonance in:

  • Our leaders (ex PM Sunak, Truss etc) that they can speak out against ULEZ, on economic grounds fueling the divided and playing into the hands of populist media.
  • The blinkered reader of the populist press. That they look at just one part of of the problem (ULEZ charge / Inconvenience) and via their sense of entitlement decry ULEZ as an attack on their freedoms, following the narrative of populist politician and media. . . . whilst ignoring the  very real and long lasting impacts that their driving habits have on the their children’s and grandchildren’s lungs!

References

Meta-analysis of the effects of indoor nitrogen dioxide and gas cooking on asthma and wheeze in children

Medical Management Guidelines for Nitrogen Oxides

The respiratory health effects of nitrogen dioxide in children with asthma

Lux Contour Map & Light Spill Assessment – Chelsea, London

Lux Contour Map & Light Spill Assessment – Chelsea, London

Earlier this month we were commissioned to write a light spill assessment for a residential project in Chelsea, London the project involved modeling a site that was undergoing refurbishment & redevelopment, and observing the light spill given a specific set of internal and external light fittings.

Image showing a 3D model of a building and the lights spill which is emanating from the glazed facade the spill is shown as contours labeled with Lux values and false Color has been applied to the contour lines in shades of pink purple and blue to share the intensity of the lights spill

Lux Contour Modelling

We were able to model a three-story building with extensive glazing overlooking a rear courtyard the internal lighting intensity was set an acceptable Lux level and the glazing apertures were accurately placed so as to show spill into the rear Courtyard they’re also some windows from Neighboring properties overlooking Courtyard.

We also created simple building layouts for these neighbouring buildings and examined the lights bill into the bedrooms assumed of these Neighboring properties we’re able to show with the model that the lights belt into the bedrooms was below one Lux which is considered a criteria for sleep disturbance.

Lighting design has advanced considerably in the last decade, and the variety of beam shapes available are mind boggling, with an asymmetric beam shape you can place fittings close to a boundary, and limit light spill into neighbouring property.

Some manufactures publish very detailed data for their light fitting which enable us to model them accurately. If you are looking for light fittings of a specific type then please ask us, as we have seen 100’s of types over the years, although for ecological lighting design we do have our favourites.

If you need a slight spill assessment or a lux contour plan (or both!) then please contact us for no-obligation chat, and fixed price quotation.

 

Incorrect Flood Zone 3b on Flood Mapping

Incorrect Flood Zone 3b on Flood Mapping

This is about as niche as it gets . . . . but here we go!

We have recently seen a couple of examples where Cornwall Council’s flood mapping (which is different to flood map for planning) gives some very strange results for Flood Zone 3b.

How Flood Zones Normally Appear

Perhaps the most familiar flood mapping for those “in the trade” is the flood map for planning. Typically we see the darker blue (more often flooding)  Flood Zone 3, fringed with lighter blue (less often flooding) Flood Zone 2.

screen shot from flood map for planning

Screen shot from flood map for planning.

In flood mapping it is always the cases that a “more often” flood outline (shaded area) never go outside of the “less often” flood outline. Look:

Flood Zones from Some Older Mapping

In the above slide the dark blue areas do not extend beyond the light blue areas. They can extend up to the edge, but not beyond.

Flood Zone 3b on Cornwall Council Flood Mapping

So when we first saw the mapping from Cornwall Councils’ own mapping service below we knew something was wrong with it. Apart from the strange colour scheme, you can see Flood Zone 3b Extends well beyond Flood Zones 2 and Flood Zone 3a.

So there is something wrong with the modelling of Flood Zone 3b at this site.

Incorrect Flood Zone 3b – Cornwall Mapping

The image below shows the beginning of our investigations in to the error. We made a detailed study of elevations in the vicinity for starters and then wrote a report to explain why the site in this instance should not be included in Flood Zone 3b.

Detailed Contour Zones on Google Satellite Images

And we are happy to say that the argument we politely put forward worked well, and the permissions was granted.

If you have issues with a site that appears to be included in FLood Zone 3b, when maybe you think it shouldn’t be then please do contact us and we will be glad to help. We can deal with this issue as part of a flood risk assessment or as a bolt on.

We have seen strange behaviour like this in Cornwall Council’s flood mapping, and also in Bristol City Council’s Flood Mapping.

 

Why Plastic Pollution is the Most Important Environmental Issue

Why Plastic Pollution is the Most Important Environmental Issue

The world Health Organisation considers air pollution to be the most pressing environmental issue at present, they are wrong about this. The most pressing environmental issue today is plastic pollution and in this blog post I will outline why this is the case. We are only just beginning to see the environmental impact and health impact from plastic pollution.

Air Pollution – Reversible Degradation

Air pollution (air quality) to the greater extent is created by combustion of fuels in typically urban environments. Gases such as nitrous oxide and tiny particles such as PM2.5 and PM10 can cause detrimental effects to those who inhale them on a regular basis however we have seen time and time again around the world that this type of Air Pollution can be rapidly reversed.

For example the clean air act implemented in 1970s California led to a rapid increase in air quality and similarly.

Between 2016 and 2023, London’s annual average NO2 concentrations dropped by 49%, which is almost double the rate of the rest of England.

Efforts in the UK to improve air quality have been fairly successful especially now given the uptake of electric and hybrid vehicles and the establishment of clean air zones in cities around the country we’re successful these have led to an almost immediate approvement improvement in air quality which just gave the show that although air quality is a serious problem it can be dealt with quickly with some very simple policy changes.

With air quality if you remove the inputs the problem is largely cured.

Plastic Pollution – Irreversible Degradation

Plastic pollution is not like air pollution if you take away the input the problem is still there the plastic just doesn’t disappear, it doesn’t dissipate, it doesn’t go away. In fact we’ve already got a bit of a time bomb on our hands with the amount of plastic that is in the environment and waiting to break down as we speak.

Although large chunks of plastic on a beach or floating around the ocean can look unsightly they are not really the problem. The problem starts when these large chunks get broken down and smaller and smaller pieces and end up being ingested by various creatures whether they be on land or on Sea.

There are also countless quadrillions of plastic particles which are discharged which are already small such as lint from washing, or particles from car tires all of these being washed into Rivers down into the sea and entering the food chain.

52,050 to 233,000 plastic particles/g depending on vegetable samples.

You only need to look at the measurable percentages of plastic found in many fish for example to realise that plastic even now is a problem. We are eating it all the time, as well as breathing it in (nod back to air quality) and if by some miracle tomorrow there was some agreement, some global agreement ,to see all production of plastic stop. Then we would still have quadrillions of tons of plastic in the environment waiting to break down into tiny particles and to leak into our food chain. The food we feed to our kids.

In Tunisia, 92.5% of sardines have microplastics in their digestive tracts.

So this is why plastic pollution needs to be knocked right up the list first place because the longer we take to put forward a decent response (near 100% ban on single use plastic) then we are just building an ever more dystopian future for ourselves. What will that look like:

  • where wild food from the sea and from the land cannot be eaten
  • we’ll have to grow all food in Sheds because the soil is so contaminated

This might sound a bit far-fetched but it’s already happening plastic is in our food and at some point it will get to a concentration where the health effects become very much measurable with more and more acute effects on our health.

People Against Plastic Pollution 

Somerset Phosphorus Budget Calculator Access

I have recently found that I can no longer access the Somerset Phosphorus Budget Calculator via the link on the Somerset Council Website.

I have tried to get direct access via links stored in my browser cache, and have come across lot of different versions, which are listed below:

Current Version

Version 5.1 below is most up to date at time of writing, the link text identifies it as V5.1, although introduction sheet states 2.1.

Somerset Phosphorus Budget Calculator – V5.1

Older Versions

Below older versions have now been superseded, but may be useful to someone, wishing to track history of changes.

Somerset Phosphorus Budget Calculator- V3.1

Below we have also included version 3.0. As offline (downloads as zip).

Somerset Phosphorus Budget Calculator – V3.0

We use the most up tp date Phosphorus Budget Calculator when we are writing Nutrient Neutrality Reports or Phosphate Assessments for Planning

South Oxfordshire Policy DES10: Carbon Reduction

South Oxfordshire Policy DES10: Carbon Reduction

Hi we have just been writing an energy statement for a site in South Oxfordshire.  This is a quick blog post to run through the requirements of South Oxford District councils carbon reduction requirements for new buildings. If you read through the guidance document DES10 there are a lot of different percentages mentioned in there which can be a bit confusing for example:

  • the 31% which comes from national requirements compared to building regulations 2013 and then;
  • 27% for non-residential buildings also;
  • 9% for reductions to 2021 building regulations and then;
  • 13% carbon reduction carbon emissions compared with 2021 building regulations for non-residential developments! :-/

So this is all gets a bit confusing and so it’s best to use the below matrix to decide what you need to do and this clearly states that as of tend to December 2020 you need to prove a 40% reduction which is actually reasonably easy to do.

This is an image showing a matricy with various boxes and arrows between them which show the selection process between the various types of development and the carbon reduction requirement as stipulated in DES10

South Oxfordshire Policy DES10: New Dwellings

Policy DES10: Carbon Reduction this is applicable to:

“All new build residential dwelling houses”

Who must prove a:

“40% reduction in carbon emissions (compared with a code 2013 Building Regulations compliant base case, which is equivalent to a 9% reduction in carbon emissions compared with a Code 2021 Building Regulations compliant base case) from renewable energy and other low carbon technologies and/or energy efficiency measures.”

South Oxfordshire Policy DES10: U-Values

You will have to meet a minimum u value as described in the building regulations and that will get you a reasonably energy efficient house.

However, in order to make the 40% carbon reduction you can either reduce the energy demand which can be done with air tightness or extra insulation or reducing cold Bridges.

If there’s any requirement to create more carbon savings then you probably be your best to do this with renewables the heating system also has an effect on the overall dwelling emission rate and so they’re all these things together which can be used to get down to the 40% saving that’s required by policy de S10 from South Oxfordshire.

Environmental Research Ideas & Topics

Environmental Research Ideas & Topics

I our day to day report writing and in conversations with clients, we hear of topics for which we then subsequently find gaps in available data. We have listed these Environmental Research Ideas & Topics below. So if you are conducting research at any level, and in any part of the world you might pick one, and advance our understanding.

We will update this post with new topics as we think of them.

5 – Over Application of Nutrients (Added October 2024)

We have heard in some instances that industrial farms (in this case in the UK) are over applying nutrients to Farmland. The example we heard about was a poultry farm where the volumes of poultry manure being produced were very large and these were then being spread to surrounding Farmland without following the guidance on nutrient balancing as provided in our RB209 for example and this is lead to in effect sterility in the land owning to an over concentration of macaroni nutrients this is entirely unsubstantiated claim coming from a phone call but it might be that there is some truth in there somewhere.

4 – Suitability of Compost Regulation in the UK (Added October 2024)

Regulations relating to composting i the UK and very confused. This comes from the waste / non- waste split. Which some producers manage to avoid, and others not so. This can lead to huge commercial enterprising circumnavigating requirements for an environmental permit, and then small farm sized operations requiring very complicated environmental permits.

3 – Export vs Recycling vs Incineration Rates for Plastic (Added October 2024)

Every week we hear of wildly differing claims with regards to “recycling” rates. The recent lawsuit between California and ExxonMobil, aims to provide that recycling has been pushed by producers as a “cure-all” for plastic waste. When in fact no more than 9% is recycled.

And that basis there is plenty of research to be done in your area to see what happens to plastic wastes. Do they get recycled or not. Where do they go. In the Uk we saw how our segregated (not recycled) waste gets exported to countries where it is not recycled.

2 –  Microplastics from Sewage Sludge (Added October 2024)

When sewage is treated at a sewage treatment works, or a smaller treatment system, a sludge is created. How much microplastic is in this sludge? And what happens to it? WHich types of treatment create the most, and is ther a way of reducing it?

1 – Microplastics from Car Tyres (Added October 2024)

Over the lifetime of a tire, whilst is wears down, it loses about 30% of its weight. These tiny abraded particles end up where? What is there volume? Where can we do to stop this? Are there additional materials that we could use that are better than materials at present?

What are the Different Types of Light Pollution?

What are the Different Types of Light Pollution?

There are a number of different types of light pollution, each one is slightly different and in term sof the negative effect it has on the environment.:

1 – Light Spill

Light spill is quite a generic term, and is usually used in the context of artificial light that “spills” from a light source in to an area where it is not wanted.

This might include say a new flood light on the side of the building shining in to someone bedroom window.

Light spill can come from external lights, or it can been spilt out of windows.

Flood Light Mounted on a Brick Wall

2 – Glare

This is more to do with the intensity of the light source. Modern LED lights can give off a lot of glare, because the emitters are very small and very bright.

So for example, the glare from lights in a petrol filling station, if not designed correctly may emit a glare that is troublesome to nearby road users.

Glare can also be caused by reflected sunlight off a reflective build facade.

Glare from a street lamp

3 – Sky Glow (Dark Skies)

Light can spill upwards into the sky causing a phenomenon known as sky glow. This creates a glow in the sky, reducing the contrast between stars and the sky. In “dark sky areas” often there is a requirement for specific lighting design.

Flood Lights Facing Up Lots of Sky GLow Created

4 – Ecological

Light can influence the behaviour of insects. Other creatures feed on insects, and so there is an indirect impact. For example in areas where bats eat insects, lighting design should spill no more than 0.2 lux on to trees or the ground.

Insects are Attracted to Light, Modifying Behaviour of Predators

Services we Offer

We can provide:

  • Light Spill Assessment for Bats
  • Lighting Assessments for Adequate Lighting
  • Dark Skies Assessment
  • Sunlight & Daylight Assessments

 

What are Blowing Sands?

Where I First Heard the Term “Blowing Sands”

This page is written by Will. I am am Geologist (amongst other things) and I also worked on Land Based Drilling Rigs for about a year in my 20’s. Some of the rigs I worked on were shell and auger rigs, and it was working with this sort of equipment that I first heard the term “blowing sands”.

What do Blowing Sands Look Like

Blowing sands do not look overly different to any other sand although if you were to pick up some in your hand there would they would be wet.  In order to blow sands need to be in a mixture with water or other fluid (should also bear in mind that is entirely possible for Sands to blow as a result of gases although this is much more rare) but in short they look similar to the wet sand which you might scoop up along the shoreline at a beach.

How do Blowing Sands Behave

In order to understand why blowing sands are named as such we must first have a little bit of an understanding of how a shell auger drilling rig works.

When drilling through sand it is typical to drill or bore an initial hole. After a while the sides of the hole will start to collapse, and it is then that you hammer in some casing. This casing is a steel tube which is a slightly larger diameter than the cutting tool that you might be using.

As you drill (or bore) the hole deeper and deeper and hammer further casing down further and further you will eventually reach the water table and this is where you are most likely to encounter blowing sands.

Sands mixed with water when exposed to vibrations will very often behave as a liquid, the sand water mixture combined with the vibration of the cutting tool will become liquid and it will “blow” back up inside the casing. One minute you’re at 10 meters depth and the next minute you’ll hole is only 6 meters deep, because the sand and water mix is flowed up (blown) inside the casing and then set solid again so this is why drillers call blowing sands as such: because they blow back up inside the casing when given a certain set of conditions.

The liquefaction process is caused by water or air being forced in between the grains of the sand (from vibrations or pumped water) and reducing the friction between them, to the point where it can flow.

Search Terms

When the vibration is added and the solid becomes a liquid this in geological terms is a process known as liquefaction it can happen on a very large scale during an earthquake when buildings or other heavy loads, that our built on sandy soils. The wet soils and the shaking of the ground can cause the sands to liquefact and the buildings literally starts sinking to the ground so it’s quite an interesting topic . It can also cause less dense items in float, as shown in the below video.

In the context of geo hazards you will also see the term running sands. “Some rocks can contain loosely packed, sandy layers that can become fluidised by water flowing through them. Such sands can ‘run’, removing support from overlying buildings and causing potential damage.”.

So if you were advancing a borehole through either of the above “soils”, it would quite likely “blow”. Drillers find this very annoying as it can undo a couple of hours work, and many drillers get paid for the depth of the hole they are drilling, you might find that they add on additional words at the beginning of the phrase such as “f***ing blowing sands” etc etc.

Extended Producer Responsibility – Packaging Reporting

Extended Producer Responsibility – Packaging Reporting

EPR – Enormous Paperwork Route 🙂

As of around now (April 2024) Companies in the UK above a certain size (turnover) and handling more than 25 tons of packaging will need to start reporting this to the Government.

If you are over the thresholds for turnover / size then after that it becomes quite difficult to decide what does and doesn’t apply to your organisation!

Some of Easier Checks

“You must collect data about the packaging you’ve supplied within the UK market or imported into the UK for 2023 and from 2024 onward.”

So you have to count packaging you import or supplied to UK market. But what does that mean.

piles of plastic drums and film

This picture shows a large pile of 25 litre plastic drums piled up in the heap.

Example of Extended Producer Responsibility

A fruit distributor imports reusable wooden crates full of apples to the UK, and then packs them in to small plastic crates, lined with disposable plastic film. So of the crates are new, and other reused. The reusable crates are sent back to france, and some of the plastic crates are returned to the distributor for refilling.

What do you keep a record of?

  • You do not record the wooden crate as they are sent back to france so they do not “end up” in the UK.
  • You do not record the used crates, because they are reusable.
  • You do record the new crates as they are new packaging introduced into UK market.
  • You do record the plastic film as this was created and ends it life in UK.

Download Spreadsheet for EPR Records 

Confused?

Yes so are we. But hopefully less confused than you are? 😉 So please contact us for help, and we will assist if we can.

All the best.