Morning all, we use Lambeth and received tubes from them on time. We are all issued a key worker letter from HR in case we are stopped and queried. There for a definite presence of police cars on roads but no one stopped to check. A note if you have just one person changing all the tubes and it takes longer than three hours, consider splitting them between 2 offficers and you would not want to eat any lunch until you are back to either work or home and washed your hands. This was my observation after yesterday š
Take care
Anjana Papnai
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Environmental Control
Regulatory Services
Guildford Borough Council
Millmead House, Millmead, Guildford, Surrey, GU2 4BB
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-----Original Message-----
From: Air quality <[log in to unmask]> On Behalf Of AIRQUALITY automatic digest system
Sent: 02 April 2020 00:01
To: [log in to unmask]
Subject: AIRQUALITY Digest - 30 Mar 2020 to 1 Apr 2020 (#2020-6)
There are 2 messages totaling 2316 lines in this issue.
Topics of the day:
1. Diffusion tube collection in lockdown
2. FW: Diffusion tube collection in lockdown
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Date: Wed, 1 Apr 2020 11:24:53 +0000
From: Andrew Edwards <[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
Hi All,
Can anyone tell me which labs are currently still open for diffusion tube analysis?
Best regards,
Andy Edwards
Project Manager - Air Environment
Bristol City Council - Sustainable City and Climate Change Service Growth and Regeneration - Planning Services
01179 224331
07775220631
[log in to unmask]
CREATE Centre| Smeaton Road | Bristol | BS1 6XN |
From: Air quality [mailto:[log in to unmask]] On Behalf Of Anita Lewis
Sent: 30 March 2020 14:12
To: [log in to unmask]
Subject: Re: Diffusion tube collection in lockdown
Peter,
This is the guidance (below) that the local authorities have been sent.
Iām currently getting readings between 8 and 14 in Cambridge; this is fine for diffusion tubes in my experience (does anyone happen to know what the Limit of Detection is?)
Iād rather get this monthās swapped over and then leave the next set out for longer if need be.
All the best,
Anita
Diffusion Tube Exposure Dates
Where it is not safe to do so, or if resource needs to be deployed elsewhere, there will be no expectation that local authority officers will expose diffusion tubes in line with the 2020 Diffusion Tube Monitoring Calendar on 1 April 2020 and 29 April 2020. A decision on the June exposure date will be taken and communicated in early May.
From: Air quality <[log in to unmask]> On Behalf Of Peter Fleming
Sent: 30 March 2020 11:52
To: [log in to unmask]
Subject: Re: Diffusion tube collection in lockdown
I am told that Defra have issued guidance that the tubes do not need to be collected.
I still maintain, that with NO2 levels so low that extending the exposure period may be preferable.
Best regards
Peter Fleming
Air Quality Specialist
Campbell Associates
Mob and WhatsApp: 07958 205920
Office: 01371 871030
CAMPBELL ASSOCIATES COVID-19 POLICY<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.campbell-2Dassociates.co.uk_coronavirus-2Dcovid-2D19&d=DwMGaQ&c=1vnCWTgU_iH2bgveKnHUZ8hJXVq2EkkiN8FwZDwwznM&r=3fRTGLXd_xtm2mz47rhSkx2OPGgVQtNIAjDUkbzzrR8&m=nk22StgD0Elmf6EoYpjNoPCZ__9PJ_jYXWowuqSRn28&s=-lk6rF-JP9bLdsj2rhhSz30IsMXFwPZcvKDxn6wJlbA&e=>
From: Air quality <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Sarah Sutton
Sent: 30 March 2020 11:19
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
Hi all,
So our lab is also closed and are also not shipping new tubes at the moment. But Iād still like to collect the tubes and expose the next set as am really interested to see the changes during the travel restrictions.
Is anyone in the same situation still going to collect tubes this week, or are you leaving them for a little while? And if you put new tubes out are you exposing them for longer during the travel restrictions?
We have Police undertaking checks in and around our area so am thinking that I would take the DEFRA letter with me!
Cheers,
Sarah
Sarah Sutton
Environmental Protection Officer
Communities
T. 01202 261739
[log in to unmask]<mailto:[log in to unmask]>
From: Air quality [mailto:[log in to unmask]] On Behalf Of Anita Lewis
Sent: 30 March 2020 11:13
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
Hi Matt,
Our lab is open as well. We are thinking that if we can at least get this set changed over, then the next set could have a delayed or missed collection as the situation changes.
Traffic was quieter in the past two weeks or so, but NO2 pollution only dropped significantly after Tuesday last week, compared with the previous year ā a lot depends on the weather!
Anita
From: Air quality <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Axton, Matthew
Sent: 27 March 2020 16:03
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
Hi Peter,
I understand that the lab I use are still open for business and ready for tubes to be collected. I agree that the results will be lower, but I canāt imagine they will be below detection level. Traffic is reduced, but is still going in my area and was relatively normal at the beginning of this period.
Thanks
Matt
________________________________
Matthew Axton
Environment Officer
Environmental Health
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From: Air quality <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Peter Fleming
Sent: 27 March 2020 15:26
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
[THIS IS AN EXTERNAL EMAIL]
Hi Anita!
I am told that, even if you collect the tubes, the labs are all closed. My opinion, for what it is worth, is still that with such low NO2 levels that extending the exposure period will be needed to get the sensitivity. If not you may be recording ābelow detectable levelsā .
I have just been looking at an AQY co-location study where we use a regression plot to compare against a reference analyser. Levels are so low that, all we have is a group of points right down at one end so getting a good estimate of gradient is not that easy! Shouldnāt complain though. Little chances of any exceedances right now. London might even comply with EC lomits!
Best regards
Peter Fleming
Air Quality Specialist
Campbell Associates
Mob and WhatsApp: 07958 205920
Office: 01371 871030
CAMPBELL ASSOCIATES COVID-19 POLICY<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.campbell-2Dassociates.co.uk_coronavirus-2Dcovid-2D19&d=DwMGaQ&c=1vnCWTgU_iH2bgveKnHUZ8hJXVq2EkkiN8FwZDwwznM&r=3fRTGLXd_xtm2mz47rhSkx2OPGgVQtNIAjDUkbzzrR8&m=nk22StgD0Elmf6EoYpjNoPCZ__9PJ_jYXWowuqSRn28&s=-lk6rF-JP9bLdsj2rhhSz30IsMXFwPZcvKDxn6wJlbA&e=>
From: Air quality <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Anita Lewis
Sent: 27 March 2020 13:08
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
Has anyone heard anything yet?
Thanks
Anita
From: Air quality <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Matthew Axton
Sent: 25 March 2020 06:57
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Diffusion tube collection in lockdown
Morning Everyone,
Just wondering what everyone's thoughts are on doing diffusion tubes during this period of lockdown? The Defra calendar is scheduled for next week.
I'm hoping that I can do still do them, as it is part of a LA's statutory duties and I should be able complete with adequate social distancing. Does anybody have any different views or are you planning on a different approach? I know tubes will still be accredited between 2 and 6 weeks exposure, so they could be left out for another couple of weeks if necessary and data would still be good to use?
Many thanks
Matt Axton
West Suffolk
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Date: Wed, 1 Apr 2020 12:31:32 +0000
From: David Ratcliffe <[log in to unmask]>
Subject: FW: Diffusion tube collection in lockdown
Good afternoon All,
Further to Andyās email. I can confirm that SOCOTEC are open for the analysis of diffusion tubes.
We currently do so for a number of the JISC mail members too.
Should anyone have any further queries, please donāt hesitate to contact me.
Best regards
David
07814 616 193
From: Air quality [mailto:[log in to unmask]] On Behalf Of Andrew Edwards
Sent: 01 April 2020 12:25
To: [log in to unmask]
Subject: Re: Diffusion tube collection in lockdown
Hi All,
Can anyone tell me which labs are currently still open for diffusion tube analysis?
Best regards,
Andy Edwards
Project Manager - Air Environment
Bristol City Council - Sustainable City and Climate Change Service Growth and Regeneration - Planning Services
01179 224331
07775220631
[log in to unmask]
CREATE Centre| Smeaton Road | Bristol | BS1 6XN |
From: Air quality [mailto:[log in to unmask]] On Behalf Of Anita Lewis
Sent: 30 March 2020 14:12
To: [log in to unmask]
Subject: Re: Diffusion tube collection in lockdown
Peter,
This is the guidance (below) that the local authorities have been sent.
Iām currently getting readings between 8 and 14 in Cambridge; this is fine for diffusion tubes in my experience (does anyone happen to know what the Limit of Detection is?)
Iād rather get this monthās swapped over and then leave the next set out for longer if need be.
All the best,
Anita
Diffusion Tube Exposure Dates
Where it is not safe to do so, or if resource needs to be deployed elsewhere, there will be no expectation that local authority officers will expose diffusion tubes in line with the 2020 Diffusion Tube Monitoring Calendar on 1 April 2020 and 29 April 2020. A decision on the June exposure date will be taken and communicated in early May.
From: Air quality <[log in to unmask]> On Behalf Of Peter Fleming
Sent: 30 March 2020 11:52
To: [log in to unmask]
Subject: Re: Diffusion tube collection in lockdown
I am told that Defra have issued guidance that the tubes do not need to be collected.
I still maintain, that with NO2 levels so low that extending the exposure period may be preferable.
Best regards
Peter Fleming
Air Quality Specialist
Campbell Associates
Mob and WhatsApp: 07958 205920
Office: 01371 871030
CAMPBELL ASSOCIATES COVID-19 POLICY<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.campbell-2Dassociates.co.uk_coronavirus-2Dcovid-2D19&d=DwMGaQ&c=1vnCWTgU_iH2bgveKnHUZ8hJXVq2EkkiN8FwZDwwznM&r=3fRTGLXd_xtm2mz47rhSkx2OPGgVQtNIAjDUkbzzrR8&m=nk22StgD0Elmf6EoYpjNoPCZ__9PJ_jYXWowuqSRn28&s=-lk6rF-JP9bLdsj2rhhSz30IsMXFwPZcvKDxn6wJlbA&e=>
From: Air quality <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Sarah Sutton
Sent: 30 March 2020 11:19
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
Hi all,
So our lab is also closed and are also not shipping new tubes at the moment. But Iād still like to collect the tubes and expose the next set as am really interested to see the changes during the travel restrictions.
Is anyone in the same situation still going to collect tubes this week, or are you leaving them for a little while? And if you put new tubes out are you exposing them for longer during the travel restrictions?
We have Police undertaking checks in and around our area so am thinking that I would take the DEFRA letter with me!
Cheers,
Sarah
Sarah Sutton
Environmental Protection Officer
Communities
T. 01202 261739
[log in to unmask]<mailto:[log in to unmask]>
From: Air quality [mailto:[log in to unmask]] On Behalf Of Anita Lewis
Sent: 30 March 2020 11:13
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
Hi Matt,
Our lab is open as well. We are thinking that if we can at least get this set changed over, then the next set could have a delayed or missed collection as the situation changes.
Traffic was quieter in the past two weeks or so, but NO2 pollution only dropped significantly after Tuesday last week, compared with the previous year ā a lot depends on the weather!
Anita
From: Air quality <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Axton, Matthew
Sent: 27 March 2020 16:03
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
Hi Peter,
I understand that the lab I use are still open for business and ready for tubes to be collected. I agree that the results will be lower, but I canāt imagine they will be below detection level. Traffic is reduced, but is still going in my area and was relatively normal at the beginning of this period.
Thanks
Matt
________________________________
Matthew Axton
Environment Officer
Environmental Health
Direct dial: 01284 757041
Email: [log in to unmask]<mailto:[log in to unmask]>
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#TeamWestSuffolk
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From: Air quality <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Peter Fleming
Sent: 27 March 2020 15:26
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
[THIS IS AN EXTERNAL EMAIL]
Hi Anita!
I am told that, even if you collect the tubes, the labs are all closed. My opinion, for what it is worth, is still that with such low NO2 levels that extending the exposure period will be needed to get the sensitivity. If not you may be recording ābelow detectable levelsā .
I have just been looking at an AQY co-location study where we use a regression plot to compare against a reference analyser. Levels are so low that, all we have is a group of points right down at one end so getting a good estimate of gradient is not that easy! Shouldnāt complain though. Little chances of any exceedances right now. London might even comply with EC lomits!
Best regards
Peter Fleming
Air Quality Specialist
Campbell Associates
Mob and WhatsApp: 07958 205920
Office: 01371 871030
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From: Air quality <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Anita Lewis
Sent: 27 March 2020 13:08
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Diffusion tube collection in lockdown
Has anyone heard anything yet?
Thanks
Anita
From: Air quality <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Matthew Axton
Sent: 25 March 2020 06:57
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Diffusion tube collection in lockdown
Morning Everyone,
Just wondering what everyone's thoughts are on doing diffusion tubes during this period of lockdown? The Defra calendar is scheduled for next week.
I'm hoping that I can do still do them, as it is part of a LA's statutory duties and I should be able complete with adequate social distancing. Does anybody have any different views or are you planning on a different approach? I know tubes will still be accredited between 2 and 6 weeks exposure, so they could be left out for another couple of weeks if necessary and data would still be good to use?
Many thanks
Matt Axton
West Suffolk
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