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Dear Ms Mott

I have passed your e-mail to the local customer team who will deal with
your request.

The Freedom of Information Act and Environmental Information Regulations
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Customer and Engagement

Environment Agency

Solent and South Downs Area

Guildbourne House

Chatsworth Road

Worthing

West Sussex

BN11 1LD

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From: Emily Mott [mailto:[FOI #635287 email]]
Sent: 16 January 2020 13:16
To: Enquiries, Unit <[Environment Agency request email]>
Subject: 200117/SRi01 - Freedom of Information request - Query regarding
methane and other VOCs released from Singleton Oil , West Sussex,

Dear Environment Agency,

I am writing in reference to

Singleton Oil Field

Singleton, West Sussex, a development owned and operated by IGas Energy.

• Please confirm or refute whether this well has a permitted release point
for methane and or other VOCs • Please state whether all the methane and
other VOCs from this well is released to the atmosphere or whether any
methane is collected in any way.

• Please indicate the volume of methane released to the atmosphere by this
well in 2018 and 2019 in either tonnes or m3. Please indicate the volume
and type of other VOCs released here • Please confirm whether the
Environment Agency or the operator measures the volume of release of
methane from this well?

• If the volumes are not measured, how are they estimated?

• Please state whether the Environment Agency is using optical imaging
cameras as this site to detect releases of methane.

• If so, what are the results from the cameras?

• Please state what techniques have been used to attempt to abate methane
releases at this well.

• Please indicate how this site complies with the Environmental Permitting
Regulations which require operators to minimise emissions

Yours faithfully,

Emily Mott

Emily Mott

-------------------------------------------------------------------

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[8][FOI #635287 email]

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dangos adrannau a ddyfynnir

Dear Emily,        

Thank you for your email of 16 January.  Please see the below response
from our technical team: 

•       Please confirm or refute whether this well has a permitted release
point for methane and or other VOCs • Please state whether all the methane
and other VOCs from this well is released to the atmosphere or whether any
methane is collected in any way.

o   Under the current environmental permit there are a total of 8
emissions points to air. Emission point A3 relates to a vent stack from
the oil storage activity and permits the venting of Methane and VOCs to
atmosphere. However, the main disposal route for the rest of the produced
gas generated at the site is through the power generator and flares rather
than venting to atmosphere.

•       Please indicate the volume of methane released to the atmosphere
by this well in 2018 and 2019 in either tonnes or m3. Please indicate the
volume and type of other VOCs released here • Please confirm whether the
Environment Agency or the operator measures the volume of release of
methane from this well?

o   The quantity of gases (CH4 and VOCs) released through this emission
point was calculated as 20.5 tonnes in 2018 and 11.16 tonnes in the first
6 month of 2019. Monitoring returns for the second 6 months in 2019 are
not due yet. These values are calculated based on crude oil processed and
gas/oil ratio.

•       If the volumes are not measured, how are they estimated?

o   These values are calculated based on crude oil processed and gas/oil
ratio.

•       Please state whether the Environment Agency is using optical
imaging cameras as this site to detect releases of methane.

o   The Environment Agency has not used an optical imaging camera at this
site to detect releases of methane.

•       If so, what are the results from the cameras?

o   See answer to above question.

•       Please state what techniques have been used to attempt to abate
methane releases at this well.

o   The produced gas at this well site is combusted, either through the
generator at the site or the flare. There is no abatement on the emissions
from the storage tank through the vent A3.

•       Please indicate how this site complies with the Environmental
Permitting Regulations which require operators to minimise emissions.

o   We have enclosed the decision documents for the permit issued on
29/06/2007 and the subsequent variations issued on 18/02/2008 and
02/04/2009 These documents detail how the requirements to control, and
(where this cannot be achieved) minimise, emissions to the environment
are to be met through the permit.  Please note that a variation to this
permit is currently in determination to bring the site up to the standards
stated in our Onshore Oil and Gas Guidance.

This information is supplied subject to the notice which can be viewed via
the following link:
[1]http://www.nationalarchives.gov.uk/doc/o...

Please get in touch if you have any further queries or contact us within
two months if you would like us to review the information we have sent.

Kind regards

Customers & Engagement Team

Environmental Planning and Engagement | Solent and South Downs Area | 
Environment Agency | Guildbourne House, Chatsworth Road, Worthing, West
Sussex, BN11 1LD

[2][email address]

National Customer Contact Centre 03708 506506

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From: Emily Mott [[9]mailto:[FOI #635287 email]]
Sent: 16 January 2020 13:16
To: Enquiries, Unit <[10][Environment Agency request email]>
Subject: 200117/SRi01 - Freedom of Information request - Query regarding
methane and other VOCs released from Singleton Oil , West Sussex,

Dear Environment Agency,

I am writing in reference to

Singleton Oil Field

Singleton, West Sussex, a development owned and operated by IGas Energy.

• Please confirm or refute whether this well has a permitted release point
for methane and or other VOCs • Please state whether all the methane and
other VOCs from this well is released to the atmosphere or whether any
methane is collected in any way.

• Please indicate the volume of methane released to the atmosphere by this
well in 2018 and 2019 in either tonnes or m3. Please indicate the volume
and type of other VOCs released here • Please confirm whether the
Environment Agency or the operator measures the volume of release of
methane from this well?

• If the volumes are not measured, how are they estimated?

• Please state whether the Environment Agency is using optical imaging
cameras as this site to detect releases of methane.

• If so, what are the results from the cameras?

• Please state what techniques have been used to attempt to abate methane
releases at this well.

• Please indicate how this site complies with the Environmental Permitting
Regulations which require operators to minimise emissions

Yours faithfully,

Emily Mott

Emily Mott

-------------------------------------------------------------------

Please use this email address for all replies to this request:

[11][FOI #635287 email]

Is [12][Environment Agency request email] the wrong address for Freedom
of Information requests to Environment Agency? If so, please contact us
using this form:

[13]https://www.whatdotheyknow.com/change_re...

Disclaimer: This message and any reply that you make will be published on
the internet. Our privacy and copyright policies:

[14]https://www.whatdotheyknow.com/help/offi...

For more detailed guidance on safely disclosing information, read the
latest advice from the ICO:

[15]https://www.whatdotheyknow.com/help/ico-...

Please note that in some cases publication of requests and responses will
be delayed.

If you find this service useful as an FOI officer, please ask your web
manager to link to us from your organisation's FOI page.

dangos adrannau a ddyfynnir