Notice of variation and consolidation
with introductory note
The Environmental Permitting (England & Wales) Regulations 2016
South West Water Limited
Wastewater treatment works at Millbrook
Mill Road
Millbrook
Torpoint
Cornwall
PL10 1EN
Variation number
NRA-SW-7829/V002
Permit number
NRA-SW-7829
Variation and consolidation
number
NRA-SW-7829/V002
1
Wastewater treatment works at Millbrook
Permit number NRA-SW-7829
Introductory note
This introductory note does not form a part of the notice.
Under the Environmental Permitting (England & Wales) Regulations 2016 (schedule 5, part 1, paragraph 19)
a variation may comprise a consolidated permit reflecting the variations and a notice specifying the variations
included in that consolidated permit.
Schedule 1 of the notice specifies the conditions that have been varied and schedule 2 comprises a
consolidated permit which reflects the variations being made. All the conditions of the permit have been
varied and are subject to the right of appeal.
This permit variation and consolidation is to reflect asset improvements that have been agreed between the
Environment Agency and South West Water Limited as part of the National Environment Programme. This
permit requires the operator to install event duration monitoring (EDM) on the settled storm overflow. This
should be completed by the agreed delivery date of 31st March 2019.
The status log of a permit sets out the permitting history, including any changes to the permit reference
number. It is not backdated before 6 April 2010.
Status log of the permit
Description
Date
Comments
Variation determined
07/07/2011
pH condition deleted.
NRA-SW-7829/V001
Environment Agency initiated
01/04/2015
Variation of permit initiated under PR14 review
variation NRA-SW-7829/V002
programme to incorporate improvements to be
delivered under AMP6
Variation determined
29/03/2019
Varied and consolidated permit issued in modern
NRA-SW-7829
condition format.
End of introductory note
Variation and consolidation
number
NRA-SW-7829/V002
2
Notice of variation and consolidation
The Environmental Permitting (England and Wales) Regulations 2016
The Environment Agency in exercise of its powers under regulation 20 of the Environmental Permitting
(England and Wales) Regulations 2016 varies and consolidates
Permit number
NRA-SW-7829
Issued to
South West Water Limited (“the operator”)
whose registered office is
Peninsula House
Rydon Lane
Exeter
Devon
EX2 7HR
company registration number 02366665
to operate water discharge activities at
Millbrook Wastewater Treatment Works
Mill Road
Millbrook
Torpoint
Cornwall
PL10 1EN
to the extent set out in the schedules.
The notice shall take effect from 31/03/2019
Name
Date
Ben Evans
29/03/2019
Authorised on behalf of the Environment Agency
Variation and consolidation
number
NRA-SW-7829/V002
3
Schedule 1
All conditions have been varied by the consolidated permit as a result of an Environment Agency initiated
variation.
Schedule 2 – consolidated permit
Consolidated permit issued as a separate document.
Variation and consolidation
number
NRA-SW-7829/V002
4
Permit
The Environmental Permitting (England and Wales) Regulations 2016
Permit number
NRA-SW-7829
This is the consolidated permit referred to in the variation and consolidation notice for variation NRA-SW-
7829/V002 authorising,
South West Water Limited (“the operator”)
whose registered office is
Peninsula House
Rydon Lane
Exeter
Devon
EX2 7HR
company registration number 02366665
to operate water discharge activities at
Millbrook Wastewater Treatment Works
Mill Road
Millbrook
Torpoint
Cornwall
PL10 1EN
to the extent authorised by and subject to the conditions of this permit.
Name
Date
Ben Evans
29/03/2019
Authorised on behalf of the Environment Agency
Permit number
NRA-SW-7829
5
Conditions
1
Management
1.1 General management
1.1.1 The operator shall manage and operate the activities:
(a) in accordance with a written management system that identifies and minimises risks of pollution
so far as is reasonably practicable, including those risks arising from operations, maintenance,
accidents, incidents, non-conformances and those drawn to the attention of the operator as a
result of complaints; and
(b) using sufficient competent persons and resources.
1.1.2 Records demonstrating compliance with condition 1.1.1 shall be maintained.
1.1.3 Any person having duties that are or may be affected by the matters set out in this permit shall have
convenient access to a copy of the permit.
2
Operations
2.1 Permitted activities
2.1.1 The only activities authorised by the permit are the activities specified in schedule 1 table S1.1.
2.2 The site
2.2.1 The discharge activities shall take place at the discharge point marked on the site plans at schedule
7 to this permit, and as listed in table S3.2; and, the operating techniques that are the subject of
conditions prefixed by 2.3 shall be applied at the locations shown, or otherwise described, in
schedule 7.
2.3 Operating techniques
2.3.1 For the activity A1 referenced in schedule 1, table S1.1 the operator shall comply with the relevant
requirements of the Urban Waste Water Treatment (England and Wales) Regulations 1994.
2.3.2 For the discharge(s) specified in table S3.3:
(a) The discharge shall only occur when and only for as long as the flow passed forward is equal to
or greater than the overflow setting indicated due to rainfall and/or snow melt.
(b) Off-line storm storage must be fully utilised before a discharge occurs. It shall only fill when the
flow passed forward is equal to or greater than the overflow setting indicated due to rainfall
and/or snow melt and shall be emptied and its contents returned to the continuation flow as
soon as reasonably practicable. The minimum off-line storm storage required is specified in
table S3.3.
(c) The discharge shall not be comminuted or macerated and shall have passed through screens
as specified and shall not contain a significant quantity of solid matter with a particle size
greater than any indicated. All screenings shall be removed from the discharge.
(d) Where a mechanically cleaned screen is installed, a telemetry alarm system shall be installed
and maintained, as far as reasonably practicable, so as to give the operator immediate
notification of a failure of the screen cleaning mechanism, unless otherwise agreed in writing by
Permit number
NRA-SW-7829
6
the Environment Agency. The operator shall take all appropriate measures to return the screen
cleaning mechanism to normal operation as soon as reasonably practicable after receipt of
notification of the failure.
3
Emissions and monitoring
3.1 Emissions to water
3.1.1 The limits given in schedule 3 table S3.1 shall not be exceeded.
3.1.2 The limits in schedule 3 table S3.1 to which this condition applies may be exceeded where: in any
series of samples of the discharge taken at regular but randomised intervals in any period of twelve
consecutive months as listed in column 1 of schedule 3A, no more than the relevant number of
samples, as listed in column 2 of schedule 3A, exceed the applicable limit for that relevant
parameter. For relevant parameters subject to schedule 3C the assessment is based on a fixed
calendar year from 1 January to 31 December inclusive.
3.1.3
(a) For the emission limits in schedule 3 table S3.1 to which this condition applies, no sample of the
discharge taken at a time when unusual weather conditions are adversely affecting the
operation of the waste water treatment works, shall be taken into account in deciding whether or
not the emission limit has been complied with.
(b) On any occasion where unusual weather conditions adversely affect the operation of the waste
water treatment works, the operator shall use its best endeavours to mitigate that adverse
effect.
(c) For any sample of the discharge taken to be considered for the purposes of (a) above, the
operator shall notify the Environment Agency in writing within 14 days of becoming aware that
an emission limit has been exceeded. That notification shall include a full description of the
unusual weather conditions and their impact on the operation of the works.
3.1.4
(a) For the emission limits in schedule 3, table S3.1 to which this condition applies, no sample of
the discharge taken at a time when abnormal operating conditions are adversely affecting the
operation of the waste water treatment works, shall be taken into account in deciding whether or
not the emission limit has been complied with.
(b) On any occasion where abnormal operating conditions adversely affect the operation of the
waste water treatment works, the Operator shall use its best endeavours to mitigate that
adverse effect.
(c) For any sample of the discharge taken to be considered for the purposes of (a) above, the
Operator shall notify the Environment Agency in writing within 14 days of becoming aware that
an emission limit has been exceeded. That notification shall include a full description of the
abnormal operating conditions and their impact on the operation of the works.
3.1.5
(a) If the measured Dry Weather Flow exceeds the permitted Dry Weather Flow limit then the
operator shall, as soon as is practicable, investigate the reasons for the exceedance. The
operator shall report the reasons for the exceedance to the Environment Agency and the steps
that it proposes to take to restore compliance. An exceedance of the Dry Weather Flow limit
shall not be recorded as a failure if the operator takes appropriate steps to restore compliance;
(b) If the measured Dry Weather Flow exceeds the permitted Dry Weather Flow limit because of
unusual rainfall during the 12-month period, then it will not be recorded as a failure of the Dry
Weather Flow limit. For the purposes of this condition, unusual rainfall shall mean rainfall that
Permit number
NRA-SW-7829
7
causes significantly higher sewage flows during the three-month period that normally records
the lowest flows;
(c) The permitted Dry Weather Flow limit is set at the operator’s planned annual 80% exceeded
flow;
(d) For compliance with this permit, the measured Dry Weather Flow is that total daily volume that
is exceeded by 90% of the recorded measured total daily volume values in any period of 12
months; and
(e) For unusual rainfall to be considered, the operator shall notify the Environment Agency and
provide supporting evidence as part of the normal specified data returns.
3.2 Emissions of substances not controlled by emission limits
3.2.1 For the activity A1 referenced in schedule 1, table S1.1 the operator shall take appropriate measures
to minimise so far as reasonably practicable the polluting effects of the emissions of substances in
the discharge not controlled by emission limits (excluding odour).
3.3 Monitoring
3.3.1 The operator shall, unless otherwise agreed in writing by the Environment Agency, undertake the
monitoring specified in the following tables in schedule 3 to this permit:
(a) point source emissions specified in tables S3.1 and S3.4;
(b) inlet quality specified in tables S3.1 and S3.4
3.3.2 The operator shall maintain records of all monitoring required by this permit.
3.3.3 Monitoring equipment, techniques, personnel and organisations employed for the emissions
monitoring programme specified in condition 3.3.1 shall have either MCERTS certification or
MCERTS accreditation (as appropriate), where available, unless otherwise agreed in writing by the
Environment Agency.
3.3.4 Accessible monitoring points shall be provided and maintained to enable the emissions monitoring
programme and/or other monitoring to be carried out at the monitoring points specified in table S3.4
of schedule 3 and shown marked on the site plans in schedule 7.
3.3.5 The monitoring programme for the parameters subject to schedule 3B shall be:
(a) pre-scheduled to cover a calendar year and the programme recorded before the start of a
calendar year sample period; and
(b) spot samples collected at approximately equal intervals during the year, including samples from
different days of the week and different times. Approximately 10% of samples should be outside
the normal sampling window which is 9am-3pm, Monday to Friday.
3.3.6 After becoming aware, or following a notification that a sample has not been taken on the schedule
3B Monitoring Programme pre-scheduled date, or is lost, or a result for that sample cannot be
reported, the operator shall record the details and reschedule the sample.
3.3.7 The monitoring programme for the parameters subject to schedule 3C shall be:
(a) pre-scheduled before each calendar year;
(b) Unless otherwise agreed in writing by the Environment Agency, the operator shall submit the
monitoring programme for the following calendar year to the Environment Agency before the 1st
of December; and
(c) samples must be collected at approximately equal intervals during the year from different days
of the week and approximately 10% of samples should be taken at weekends.
Permit number
NRA-SW-7829
8
3.3.8 Unless otherwise agreed in writing by the Environment Agency, after becoming aware, or following
notification that a sample has not been taken on the schedule 3C Monitoring Programme pre-
scheduled date, or is lost, or a result for that sample cannot be reported, the operator shall notify the
Environment Agency of the missed event and the reschedule date as soon as reasonably
practicable.
3.3.9 For the activity A2 referenced in schedule 1, table S1.1 an event duration monitoring system shall be
installed and maintained, as far as reasonably practicable so as to give the operator data available of
discharge occurrence (start and stop) at the frequency defined in table S3.1.
4
Information
4.1 Records
4.1.1 All records required to be made by schedule 3, 4 and 5 to this permit shall:
(a) be legible;
(b) be made as soon as reasonably practicable;
(c) if amended, be amended in such a way that the original and any subsequent amendments
remain legible, or are capable of retrieval; and
(d) be retained, unless otherwise agreed in writing by the Environment Agency, for at least 6 years
from the date when the records were made.
4.1.2 The operator shall maintain convenient access, in either electronic or hard copy, to the records, plan
and management system required to be maintained by this permit.
4.2 Reporting
4.2.1 The operator shall send all reports and notifications required by the permit to the Environment
Agency using the contact details supplied in writing by the Environment Agency.
4.2.2 Within the time period after the end of the reporting period specified in schedule 4 table S4.1 the
operator shall, unless otherwise agreed in writing by the Environment Agency, submit reports of the
monitoring and assessment carried out in accordance with the conditions of this permit, as follows:
(a) in respect of the parameters and monitoring points specified in schedule 4 table S4.1;
(b) for the reporting periods specified in schedule 4 table S4.1 and using the forms specified in
schedule 4 table S4.2; and
(c) giving the information from such results and assessments as may be required by the forms
specified in those tables.
4.3 Notifications
4.3.1 The Environment Agency shall be notified as soon as reasonably practicable following detection,
within the site of the regulated facility of:
(a) any malfunction, breakdown or failure of equipment or techniques, accident, or emission of a
substance not controlled by an emission limit which has caused, is causing or may cause
significant pollution; and
(b) any breach of a limit specified in schedule 3 table S3.1 (including individual exceedances of
limits which are covered by condition 3.1.2).
Any other significant adverse environmental effects, which may have been caused by the activity,
shall also be notified to the Environment Agency as soon as reasonably practicable following
detection.
Permit number
NRA-SW-7829
9
4.3.2 The information provided under condition 4.3.1 shall be supported by sending the information listed
in schedule 5 to this permit within the time period specified in that schedule.
4.3.3 Where the Environment Agency has requested in writing that it shall be notified when the operator is
to undertake monitoring and/or spot sampling specified in schedule 3B/3C, the operator shall inform
the Environment Agency when the relevant monitoring and/or spot sampling is to take place. The
operator shall provide this information to the Environment Agency at least 14 days before the date
the monitoring is to be undertaken.
4.3.4 The Environment Agency shall be notified within 14 days of the occurrence of the following matters,
except where such disclosure is prohibited by Stock Exchange rules:
Where the operator is a registered company:
(a) any change in the operator’s trading name, registered name or registered office address; and
(b) any steps taken with a view to the operator going into administration, entering into a company
voluntary arrangement or being wound up.
Where the operator is a corporate body other than a registered company:
(a) any change in the operator’s name or address; and
(b) any steps taken with a view to the dissolution of the operator.
4.3.5 For the activity A1 referenced in schedule 1, table S1.1 where the operator proposes to make a
change in the nature of the activity by increasing the concentration of, or the addition of, or allowing
the introduction of, a substance to the activity to an extent that the operator considers could have a
significant adverse environmental effect on the receiving waters, and the change is not permitted by
emission limits specified within schedule 3 table S3.1 or the subject of an application for approval
under the EP Regulations or under the terms of this permit:
(a) the Environment Agency shall be notified in writing at least 14 days before the increase or
addition or allowing the introduction; and
(b) the notification shall contain a description of the proposed change.
4.3.6 For the activity A1 referenced in schedule 1, table S1.1 the operator shall inform the Environment
Agency in writing of any change, or proposed change, to the population equivalent such as would
make a material change to the application of the Regulations and shall, on request, inform the
Environment Agency in writing of the actual population equivalent.
4.4 Interpretation
4.4.1 In this permit the expressions listed in schedule 6 shall have the meaning given in that schedule.
4.4.2 In this permit references to reports and notifications mean written reports and notifications, except
where reference is made to notification being made “as soon as reasonably practicable”, in which
case it may be provided by telephone.
Permit number
NRA-SW-7829
10
Schedule 1 – Operations
Table S1.1 Activities
Activity reference
Description of activity
Limits of specified activity
A1
Discharge of secondary treated
N/A
sewage effluent via Outlet 1
A2
Discharge of settled storm sewage
N/A
via Outlet 1
Schedule 2 – Waste types, raw materials and fuels
Schedule 2 not in use.
Permit number
NRA-SW-7829
11
Schedule 3 – Emissions and monitoring
Table S3.1 Point Source emissions to water (other than sewer) – emission limits and monitoring requirements
Effluent(s) and
Parameter
Limit
Reference Period
Limit of effective range
Monitoring
Compliance
discharge point(s)
(including
frequency
Statistic
unit)
A1 Secondary
Dry weather flow
2047 m3/day
Total daily volume
N/A
Continuous
Condition 3.1.5
treated sewage
applies
effluent via Outlet 1
15-minute
No limit set.
15 minute
N/A
Continuous
N/A
instantaneous or
Record as l/s
averaged flow
ATU-BOD as O2
40 mg/l
Instantaneous (spot N/A
As specified in
Look up table
sample)
schedule 3B
(Conditions 3.1.2
and 3.1.3 apply)
ATU-BOD as O2
80 mg/l
Instantaneous (spot N/A
As specified in
Maximum
sample)
schedule 3B
(Condition 3.1.3
applies)
Ammoniacal
20 mg/l
Instantaneous (spot 1 May to 31 December inclusive
As specified in
Look up table
nitrogen
sample)
schedule 3B
(Conditions 3.1.2
(expressed as N)
and 3.1.3 apply)
Ammoniacal
48 mg/l
Instantaneous (spot 1 May to 31 December inclusive
As specified in
Maximum
nitrogen
sample)
schedule 3B
(Condition 3.1.3
(expressed as N)
applies)
Suspended solids
60 mg/l
Instantaneous (spot N/A
As specified in
Look up table
(measured after
sample)
schedule 3B
(Conditions 3.1.2
drying at 105oC)
and 3.1.3 apply)
Visible oil or
No significant
Instantaneous
N/A
N/A
No significant
grease
trace present
(visual examination)
trace
so far as is
(Condition 3.1.3
reasonably
applies)
practicable
Permit number
NRA-SW-7829
12
Table S3.1 Point Source emissions to water (other than sewer) – emission limits and monitoring requirements
Effluent(s) and
Parameter
Limit
Reference Period
Limit of effective range
Monitoring
Compliance
discharge point(s)
(including
frequency
Statistic
unit)
ATU-BOD as O2
Minimum of 70
24 hour composite
To be compliant a sample has to
As specified in
Look up table
(UWWTR)
% removal
meet the 70% removal standard or
schedule 3C
(Conditions 3.1.2
compared to
the 25 mg/l limit not both
and 3.1.4 apply)
influent
ATU-BOD as O2
25 mg/l
(UWWTR)
ATU-BOD as O2
50 mg/l
24 hour composite
This limit does not apply if a sample
As specified in
Maximum
(UWWTR)
has met the 70% removal standard
schedule 3C
(Condition 3.1.4
applies)
COD as O2
Minimum of 75
24 hour composite
To be compliant a sample has to
As specified in
Look up table
(UWWTR)
% removal
meet the 75% removal standard or
schedule 3C
(Conditions 3.1.2
compared to
the 125 mg/l limit not both
and 3.1.4 apply)
influent
COD as O2
125 mg/l
(UWWTR)
COD as O2
250 mg/l
24 hour composite
This limit does not apply if a sample
As specified in
Maximum
(UWWTR)
has met the 75% removal standard
schedule 3C
(Condition 3.1.4
applies)
A2 Settled storm
Settled storm
N/A
N/A
Condition 3.3.3 does not apply
15 minute
N/A
sewage via Outlet 1
sewage discharge
event duration
monitoring
(discharge / no
discharge)
Settled storm
N/A
N/A
Condition 3.3.3 does not apply
Whenever a
N/A
sewage discharge
discharge occurs
start and end
times
Permit number
NRA-SW-7829
13
Table S3.1 Point Source emissions to water (other than sewer) – emission limits and monitoring requirements
Effluent(s) and
Parameter
Limit
Reference Period
Limit of effective range
Monitoring
Compliance
discharge point(s)
(including
frequency
Statistic
unit)
Settled storm
N/A
N/A
Condition 3.3.3 does not apply
15 minute
N/A
sewage discharge
event duration
monitoring status
(operational / not
operational)
Permit number
NRA-SW-7829
14
Table S3.2 Discharge points
Effluent Name
Discharge Point
Discharge point NGR
Receiving
water/Environment
A1 Secondary treated
Outlet 1
SX 4355 5229
Millbrook Lake
sewage effluent
A2 Settled storm sewage Outlet 1
SX 4355 5229
Millbrook Lake
Table S3.3 Storm sewage discharge settings
Effluent(s)
Description
Overflow
Maximum
Screen
Minimum
Minimum
and
of discharge setting l/s
size of solid
aperture
screen
storage
discharge
matter
size
capacity
capacity m3
point(s)
flow l/s
A2 Settled
Settled storm 32
No greater
6 mm
All flows shall 440 (offline)
storm
sewage
than 6 mm in
be screened
sewage via
more than 2
Outlet 1
dimensions
Table S3.4 Monitoring points
Effluent(s) and
Monitoring type
Monitoring point NGR
Monitoring point
discharge point(s)
reference
A1 Secondary treated
UWWTR influent
SX 4314 5258
M1
sewage effluent via
sampling
Outlet 1
A1 Secondary treated
UWWTR effluent
SX 4313 5252
M4
sewage effluent via
sampling
Outlet 1
A1 Secondary treated
Effluent sampling
SX 4313 5252
M4
sewage effluent via
Outlet 1
A1 Secondary treated
MCERTS flow
SX 4314 5257
M5
sewage effluent via
monitoring
Outlet 1
A2 Settled storm sewage Effluent sampling
SX 4313 5252
M3
via Outlet 1
A2 Settled storm sewage Event duration
SX 4316 5257
M2
via Outlet 1
monitoring
Permit number
NRA-SW-7829
15
Schedule 3A - Look up table
Look up table
Number of samples taken in any period of 12
Maximum number of samples permitted to
months
exceed limit for given parameter
4–7
1
8–16
2
17–28
3
29–40
4
41–53
5
54–67
6
68–81
7
82–95
8
96–110
9
111–125
10
126–140
11
141–155
12
156–171
13
172–187
14
188–203
15
204–219
16
220–235
17
236–251
18
252–268
19
269–284
20
285–300
21
301–317
22
318–334
23
335–350
24
351–365
25
Permit number
NRA-SW-7829
16
Schedule 3B - OSM tier 3 sampling frequency
Parameter
‘Normal
Reduced
On numeric limit
Out of hours
frequency’ of
Sampling
failure return to
samples
samples per year
frequency after 12 normal frequency
consecutive
as soon as
months of
reasonably
numeric permit
practicable,
compliance,
samples per 12
samples per year
months1
or pro rata over
the remainder of a
year
Sanitary
24
12
24
For 24 samples 2
out of hours
samples per annum
Non sanitary
12
12
12
For 12 samples 1
out of hours sample
per annum
1For UV efficacy monitoring use sanitary frequency and increase following failure of UV requirements only.
Schedule 3C – Urban Waste Water Treatment
Regulations sampling frequency
Population equivalent
Samples per year
Reduced sampling
Following an UWWTR
frequency after a year
exceedance or failure
without an UWWTR
return to the higher
exceedance or failure,
frequency in the year
samples per year
that follows, samples
per year
2,000 to 9,999
12
4
12
10,000 to 49,999
12
N/A
N/A
50,000 or over
24
N/A
N/A
Permit number
NRA-SW-7829
17
Schedule 4 – Reporting
Parameters, for which reports shall be made, in accordance with conditions of this permit, are listed below.
Table S4.1 Reporting of monitoring data
Parameter
Monitoring point
Reporting period Period begins
reference
Dry Weather Flow (daily flows total)
M5
Annually
1 January
Report to be
submitted within 2
months of the end
of the calendar
year
15-minute flow
M5
Reports to be
Upon request by
provided to the
the Environment
Environment
Agency
Agency upon
request
Report to be
submitted within
28 days unless
otherwise
specified in writing
by the
Environment
Agency
UWWTR - ATU-BOD as O2, COD
M1 & M4
Monthly
1st of month
as O2,
Report to be
submitted within
28 days
Operator Self Monitoring - ATU-
M4
Quarterly
1st of month
BOD as O2, ammoniacal nitrogen
Report to be
(expressed as N), suspended solids
submitted within
(measured after drying at 105oC)
28 days
Operator Self Monitoring summary
M4
Annually
1 January
report
Report to be
submitted within 2
months of the end
of the calendar
year
Settled storm sewage discharge
M2
Reports to be
Upon request by
start and end times
provided to the
the Environment
Environment
Agency
Agency upon
request
Report to be
submitted within
28 days unless
otherwise
specified in writing
by the
Environment
Agency
Permit number
NRA-SW-7829
18
Table S4.1 Reporting of monitoring data
Parameter
Monitoring point
Reporting period Period begins
reference
Settled storm sewage discharge
M2
Annually
1 January
start and end times
Report to be
submitted within 2
months
Settled storm sewage discharge
M2
Annually
1 January
event duration monitoring status
Report to be
(operational / not operational)
submitted within 2
months
Table S4.2 Reporting forms
Parameter
Reporting format
Dry Weather Flow (daily flows total)
WISKI electronic format specified by the Environment Agency
15-minute flow
WISKI electronic format specified by the Environment Agency
UWWTR – ATU-BOD as O2, COD as O2
Electronic format specified by the Environment Agency
OSM - ATU-BOD as O2, ammoniacal
Quarterly - Electronic format specified by the Environment
nitrogen (expressed as N), suspended
Agency
solids (measured after drying at 105oC)
Operator Self Monitoring summary report
Annually - Summary report of compliance with the monitoring
programme specified in Table S3.1 and schedule 3B in a
format specified by the Environment Agency
Settled storm sewage discharge start and
Form as agreed in writing by the Environment Agency
end times
Settled storm sewage discharge start and
Annual summary report or other form as agreed in writing by
end times
the Environment Agency
Number of and total duration of counted spills for all spills
.
Settled storm sewage discharge event
Annual summary report or other form as agreed in writing by
duration monitoring status (operational /
the Environment Agency
not operational)
Percentage of time in the reporting period that the event
duration monitoring equipment was operational
.
Permit number
NRA-SW-7829
19
Schedule 5 – Notification
These pages outline the information that the operator must provide.
Units of measurement used in information supplied under Part A and B requirements shall be appropriate to
the circumstances of the emission. Where appropriate, a comparison should be made of actual emissions
and authorised emission limits.
If any information is considered commercially confidential, it should be separated from non-confidential
information, supplied on a separate sheet and accompanied by an application for commercial confidentiality
under the provisions of the EP Regulations.
Part A
Permit Number
Name of operator
Location of Facility
Time and date of the detection
(a) Notification requirements for any malfunction, breakdown or failure of equipment or techniques,
accident, or emission of a substance not controlled by an emission limit which has caused, is
causing or may cause significant pollution
To be notified within 24 hours of detection unless otherwise agreed in writing by the Environment
Agency
Date and time of the event
Reference or description of the
location of the event
Description of where any release
into the environment took place
Substances(s) potentially
released/type or nature of sewage
released
Best estimate of the quantity or
rate of release of substances
and/or duration of discharge
Best estimate of the
environmental impact of the
discharge
Measures taken, or intended to be
taken, to stop any emission
Description of the failure or
accident.
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(b) Notification requirements for the breach of a limit specified in schedule 3 table S3.1 (including
individual exceedances of limits which are covered by condition 3.1.2)
The information specified below is to be notified to the Environment Agency as soon as reasonably
practicable following detection.
Monitoring point reference/ source
Self monitoring regime (where
e.g. OSM/UWWTR
relevant)
Type of failure
e.g. LUT failure/LUT exceedance/upper tier/other
Date of sample/event
Parameter
Result and units
Limit and units
Part B – to be submitted as soon as reasonably practicable
unless otherwise agreed in writing by the Environment Agency
Any more accurate information on the matters for
notification under Part A.
Measures taken, or intended to be taken, to
prevent a recurrence of the
incident/breach/exceedance
Measures taken, or intended to be taken, to rectify,
limit or prevent any pollution of the environment
which has been or may be caused by the emission
Name*
Post
Signature
Date
* authorised to sign on behalf of the operator
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Schedule 6 – Interpretation
“abnormal operating conditions” include but are not limited to, the circumstances described in Regulation
40(1) of, or paragraph 6(5) of Schedule 21 to, the Environmental Permitting Regulations 2016 (illegal
discharge to sewer), unusual weather, or during a defined period where the permit authorising the permitted
activity has been varied for reasons such as capital works construction.
“accident” means an accident that may result in pol ution.
"annually" means once every year.
“application” means the application for this permit, together with any additional information supplied by the
operator as part of the application and any response to a notice served under Schedule 5 to the EP
Regulations.
For the activity A1 referenced in schedule 1, table S1.1 “appropriate measures” for the purposes of the
emission of substances not controlled by emission limits condition (condition 3.2.1) do not require the
operator to undertake treatment to a level beyond that specified in schedule 1 table S1.1, or to carry out
routine monitoring for substances not controlled by emission limits.
“ATU-BOD as O2” means the biochemical oxygen demand (measured after 5 days at 20oC with nitrification
suppressed by the addition of allylthiourea).
“COD as O2” means the chemical oxygen demand (measured using the standard dichromate procedure).
“emissions of substances not control ed by emission limits” means emissions of substances to air, water or
land from the permitted activities, which are not controlled by an emission limit.
“EP Regulations” means The Environmental Permitting (England and Wales) Regulations SI 2016 No.1154
and words and expressions used in this permit which are also used in the Regulations have the same
meanings as in those Regulations.
“MCERTS” means the Environment Agency’s Monitoring Certification Scheme.
“minimum screen capacity flow” means the minimum flow passed through the screens to the outfall when the
screen bypass operates.
“monitoring frequency” as used in Table S3.1 in the context of Event Duration Monitoring is the temporal
interval at which a change of state between no discharge and discharge is to be detected.
“overflow” for the purposes of schedule 7, means any weir or orifice or other means via which flow in excess
of its overflow setting is diverted from the continuation sewer when it is caused by rainfall and or snowmelt.
“overflow setting” means the minimum flow passed forward to the continuation flow when the overflow
operates.
"quarter" means a calendar year quarter commencing on 1 January, 1 April, 1 July or 1 October.
“significant pol ution” means a category 1 or category 2 incident indicated by the Common Incident
Classification Scheme (CICS).
“spil ” one or more overflow events within a period of 12 hours or less wil be considered to be one spill, one
or more overflow events extending over a period of greater than 12 hours up to 36 hours will be considered
to be 2 spills. Each subsequent 24 hour duration counts as 1 additional spill and the whole of the 24 hour
block is included.
“unusual weather conditions” includes, but is not limited to:
• low ambient temperatures, or the freezing of mechanical equipment in the works;
• significant snow deposits;
• tidal or fluvial flooding;
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• weather conditions causing unforeseen loss of power supply to the sewage treatment that could not
be ameliorated by the reasonable provision and operation of standby generation facilities.
“Urban Waste Water Treatment (England and Wales) Regulations 1994 (UWWTR)” means Urban Waste
Water Treatment (England and Wales) Regulations 1994 SI 2841and the words and expressions used in this
permit which are also used in the Regulations have the same meanings as in those Regulations.
“year” means calendar year ending 31 December.
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Schedule 7 – Site plans
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END OF PERMIT
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