North Office, Aske Stables, Aske, t 01748 889268 e info@envireauwater.co.uk

Richmond, North Yorkshire, DL10 5HG w www.envireauwater.co.uk

Envireau Ltd. Registered in England & Wales No. 6647619

Registered office: Cedars Farm Barn, Market Street, Draycott, Derbyshire, DE72 3NB

Technical Note

To: Environment Agency From: Envireau Water

Ref: P:\TE KMA Monitoring 2018 (2335)\40 - Reporting\Temp Suspen\Round 43 - 22_08_18\Tech note r2.docm

Pages: 4 + 2 Figures + 2 Appendices

Re: KMA Wellsite. Surface and groundwater monitoring monthly report for samples collected on 22/08/18

Date: 04/09/2018

1 INTRODUCTION

This technical note has been prepared by Envireau Water on behalf of Third Energy UK Gas Limited (Third

Energy) and presents surface water and groundwater data collected at Kirby Misperton A Wellsite, North

Yorkshire (“the KMA wellsite”) during August 2018.

The requirements for surface water and groundwater monitoring are set out in the mining waste and

groundwater activity permit (Ref. EPR/DB3002HE; “the permit”) which was issued by the Environment

Agency for the hydraulic fracturing operation in April 2016 [Ref. 1].

Table S3.5 of the permit requires monitoring to be undertaken in accordance with the permit, unless

otherwise agreed with the Environment Agency. The permitted monitoring locations are shown on Figure 1.

After a period of “operational activity”, there has been a temporary suspension of activities since March

2018. It was agreed with the Environment Agency to carry out monthly monitoring at a reduced number of

monitoring locations and for a reduced suite of parameters which included key environmental indicators and

took account of the chemicals stored at the wellsite [Ref. 2 - 4]. All chemical products required for the

proposed hydraulic fracturing activity were removed from the site at the start of July 2018. It was therefore

agreed with the Environment Agency that water monitoring at the wellsite could be curtailed as there is no

permit requirement to continue monitoring during this period of suspended activity. It is acknowledged that

the full suite of water quality monitoring required by the permit will need to resume 3 months prior to

operations at the wellsite.

In order to ensure that the requirements of Section 4A of the Petroleum Act 1998 (inserted by section 50 of

the Infrastructure Act 2015) continue to be fulfilled, monthly monitoring for dissolved methane will continue

at the KMA wellsite (monitoring locations BHA -BHE).

2 SAMPLING AND ANALYSIS

Water samples for dissolved methane were collected from the five on-site monitoring boreholes (BHA-E).

Details of the monitoring locations can be found in Appendix A. The water monitoring carried out since

Envireau Water

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October 2017 is summarised in Table 1 below. Weather conditions during sampling can be found in Appendix

B.

Table 1 Sampling Rounds during the Operational Period and the Period of Suspended Operations.

Monitoring

Date

Monitoring Locations

BHA BHB BHC BHD BHE S1 S2 S3 S4 G1 G2 G3 G4 G5 G6

18/10/17 X X X X X D - - D - - - - - -

25/10/17 X X X X X X - - X - - - - - -

31/10/17 X X X X X X - - X - - - - - -

06-07/11/17 X X X X X X X X X X X X X X X

15/11/17 X X X X X X - - X - - - - - -

22/11/17 X X X X X X - - X - - - - - -

29/11/17 X X X X X X - - X - - - - - -

05-06/12/17 X X X X X X X X X X X X X X X

14/12/17 X X X X X X - - X - - - - - -

04-05/01/18 X X X X X X X X X X X X X X X

13-14/02/18 X X X X X X X X X X X X X X X

14/03/18 X X X X X X - - X - - - - - -

10/04/18 X X X X X X - - X - - X X - -

15/05/18 X X X X X D - - X - - - - - -

18/06/18 X X X X X D - - D - - - - - -

25/07/18 X X X X X - - - - - - - - - -

22/08/18 X X X X X - - - - - - - - - -

Notes: (X) location sampled, (D) insufficient water to sample, (-) sample not included in sampling round.

Water samples were collected according to the established sampling protocol [Ref. 5]. Samples were sent to

Exova Jones laboratory and results returned to Envireau Water for processing and reporting. Field analysis

was carried out using handheld devices.

3 RESULTS

Analytical results from the last sampling round are presented electronically in Table 2 along with results from

the preceding operational and baseline period. Laboratory test certificates are available on request.

Figure 2 presents methane data, which shows dissolved methane was detected at 10 µg/L in BHA, <1 µg/L in

BHB and BHC and 53 µg/L in BHD. A much higher methane concentration of 39 mg/L was detected in BHE.

Such concentrations are consistent with previous sampling rounds.

A duplicate sample taken from BHA returned a dissolved methane concentration of 10 µg/L, identical to that

found in the primary sample. The blank sample returned a concentration of 3 µg/L consistent with historical

sampling rounds where detects of 3 µg/L (i.e. just above the limit of detection (LOD) of 1 µg/L) have been

registered.

In the previous (July) sampling round duplicate analysis of the blank samples returned methane detects of 3

µg/L and 8 µg/L respectively. Whilst the detects were within the same order of magnitude and within

Envireau Water

Ref: P:\TE KMA Monitoring 2018 (2335)\40 - Reporting\Temp Suspen\Round 43 - 22_08_18\Tech note r2.docm Page 3 of 4

concentrations previously observed a reanalysis was completed due to the inconsistency in the duplicate

samples. A reanalysis of the samples was completed which returned detects below the LOD, however, it

should be noted that the samples had exceeded their stability time. As the August sampling round returned

a typical detect of 3 µg/L it is believed that the difference in the July duplicate samples was the result of a

laboratory error or very low level methane contamination of the distilled water used for the blanks.

4 CONCLUSION

Dissolved methane analysis of the samples collected on 22nd August 2018 shows that there has been no

change in comparison to baseline conditions.

The next monthly sampling round is scheduled for September 2018.

Envireau Water

04/09/2018

Hello

Envireau Water

Ref: P:\TE KMA Monitoring 2018 (2335)\40 - Reporting\Temp Suspen\Round 43 - 22_08_18\Tech note r2.docm Page 4 of 4

REFERENCES

Ref.1 Kirby Misperton A Wellsite, Permit number EPR/DB3002HE. Environment Agency, 11/04/16. Ref.2 EPR Compliance Assessment Report 402444/0297597. Environment Agency, 07/12/17. Ref.3 EPR Compliance Assessment Report 402444/0303341. Environment Agency, 06/03/17. Ref.4 EPR Compliance Assessment Report 402444/0303890. Environment Agency, 16/03/18. Ref.5 Groundwater and Surface Water Sampling Protocol. Prepared by Envireau Water for Third Energy UK

Gas Ltd, October 2016.

Envireau Water

Ref: P:\TE KMA Monitoring 2018 (2335)\40 - Reporting\Temp Suspen\Round 43 - 22_08_18\Tech note r2.docm Figures

FIGURES

Monitoring Points

ThirdEnergyUKGasP:\Third Energy KMA (2335)\40 - Reporting\Temp Suspen\Round 43 -22_08_18\Figs\Fig 1 - Monitoring Locations .cdrDate: 24/08/2018

Figure 1

Borehole A

Superficial Deposits

Corallian Group:

MonitoringPoints:

KMAWellsite

Borehole B

Borehole C

Borehole E

Kimmeridge Clay:Borehole D

:

Concrete Pad

N

S

W E

Scale 1 : 1,000 (at A3)

KEYKMA Wellsite boundary

Surface Waters: Sugar Hill Downstream Costa Beck Ackland Beck

MonitoringPoints:

Sugar Hill Upstream

Superficial DepositsWest FarmThe VillaCoultas FarmHabton WhinThe Ellers

Elm Tree FarmKimmeridge Clay:

1 km Radius

2 km Radius

500 m Radius

S3

7978777675

80

79

81

78

77

SE

Rep

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of

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Cro

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00

05

00

02

.

Scale 1 : 30,000 (at A3)

N

S

W E

0.5 1km0 0.5 1km0

25 50m0

Dissolved MethaneFigure 2

Ref:P:\TE KMA Monitoring 2018 (2335)\40- Reporting\Temp Suspen\Round 43- 22_08_18\Figs\ Fig 2-Methane.cdr Date:24/08/2018

ThirdEnergyUKGas

0.1

1

10

100

1000

10000

100000

24/04/17 24/06/17 24/08/17 24/10/17 24/12/17 23/02/18 25/04/18 25/06/18 25/08/18 25/10/18

Met

han

e (µ

g/l

)Methane (µg/l)

S1 S4 BHA BHB BHC BHD BHE Detection limit

Reproduction of base map with the permission of The Controller of Her Majesty’s Stationary Office © Crown copyright. Licence No. AL 100050002.

Scale 1 : at A4

[C05/083-CSL] British Geological Survey. © NERC. All rights reserved.

Contains Environment Agency information © Environment Agency and database right 2018.

Contains public sector information licensed under the Open Government Licence v3.0.

Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.

N

S

W E

KEY

Envireau Water

Ref: P:\TE KMA Monitoring 2018 (2335)\40 - Reporting\Temp Suspen\Round 43 - 22_08_18\Tech note r2.docm Tables

TABLE 2

WATER SAMPLE ANALYSIS RESULTS

Envireau Water

Ref: P:\TE KMA Monitoring 2018 (2335)\40 - Reporting\Temp Suspen\Round 43 - 22_08_18\Tech note r2.docm Appendices

APPENDIX A

MONITORING LOCATIONS

Table A1 Surface Water Monitoring Locations

Name Monitoring Point National Grid Reference

Ground

Elevation

(mAOD)

Description

Sugar Hill Drain

Downstream S1 SE 76995 78777 23

Stream, part of a large field drainage system.

Located on low permeability Glacial Till, Lacustrine

deposits and the Kimmeridge Clay (Ancholme

Group). Drains towards Ackland Beck and Costa

Beck. Monitoring point located to the south of the

KMA Wellsite.

Costa Beck S2 SE 78730 79637 22 Medium sized river flowing in a south-easterly

direction.

Ackland Beck S3 SE 75701 77456 22 Small sized river flowing in a south-easterly

direction.

Sugar Hill Drain

Upstream S4 SE 77106 79054 29

Stream, part of a large field drainage system.

Located on low permeability Glacial Till, Lacustrine

deposits and the Kimmeridge Clay (Ancholme

Group). Drains towards Ackland Beck and Costa

Beck. Monitoring point located to the north of the

KMA Wellsite.

Table A2 Onsite Groundwater Monitoring Locations

Name Monitoring

Point

National Grid

Reference

Ground

Elevation

(mAOD)

Construction Details

Target Formation1 Borehole Depth

(mbgl) Screened Interval (mbgl)

Borehole A BHA SE 77153 79025 32

Superficial Deposits/

Kimmeridge Clay

(weathered)

11.5 8.0 to 11.0

Borehole B BHB SE 77099 78989 32

Superficial Deposits/

Kimmeridge Clay

(weathered)

11.5 8.0 to 11.0

Borehole C BHC SE 77162 78964 32

Superficial Deposits/

Kimmeridge Clay

(weathered)

11.5 8.0 to 11.0

Borehole D BHD SE 77132 78963 29 Kimmeridge Clay (un-

weathered) 38.0 25.0 to 37.0

Borehole E BHE SE 77110 78969 29 Corallian Group 222.0 Open hole from 192.6 to

222.0

Notes: 1. Based on Envireau Water’s interpretation of available borehole construction, geological and other data.

mbgl: metres below ground level mAOD: metres above Ordnance Datum

Envireau Water

Ref: P:\TE KMA Monitoring 2018 (2335)\40 - Reporting\Temp Suspen\Round 43 - 22_08_18\Tech note r2.docm Appendices

APPENDIX B

WEATHER OBSERVATIONS

Table B Weather Observations

Round Date Weather observations

Round 23 24/04/2017 Overcast but dry with sunny spells

25/04/2017 Overcast with sunny spells and short intense rainfall periods

Round 24 17/05/2017 Consistent light rain all day

18/05/2017 Sunny and dry

Round 25 14/06/2017 Sunny and dry, ~22°C

15/06/2017 Cloudy and dry, ~16°C

Round 26 06/09/2017 Sunny and dry in the morning with light rain in the afternoon

Round 27 18/10/2017 Sunny in the morning and cloudy in the afternoon, dry all day

Round 28 25/10/2017 Sunny in the morning and cloudy in the afternoon, dry all day

Round 29 31/10/2017 Rainfall in the morning with cold breeze, still cool but lighter rainfall in the afternoon

Round 30 06/11/2017 Dry and cold, ~8°C

07/11/2017 Overcast and cold in the morning, rain between 1300 - 1700 hours

Round 31 15/11/2017 Dry and sunny, ~8°C

Round 32 22/11/2017 Windy and raining all day, ~8°C

Round 33 29/11/2017 Heavy rainfall and hail, overcast all day, ~3°C

Round 34 05/12/2017 Dry, cool breeze, ~6°C

06/12/2017 Dry, cool breeze, ~6°C

Round 35 14/12/2017 Cold, -1 to 3. Dry in the morning with rainfall in the afternoon

Round 36 04/01/2018 Rainfall all day, ~8°C

05/01/2018 Dry all day, cold ~3°C

Round 37 13/02/2018 Rainfall all day, ~5°C

14/02/2018 Dry in the morning and light rain in the afternoon (ca. 14:00hrs) - cold ~3°C with wind gusts

Round 38 14/03/2018 Dry all day with sunny intervals, temperature ranged from 8 – 13°C with wind gusts

Round 39 10/04/2018 Rain in the morning with strong winds, cold and dry in the afternoon with temperatures

Round 40 15/05/2018 Sunny and dry all day, 16-22oC

Round 41 18/06/2018 Sunny intervals with cloud, temperature highs of 22oC

Round 42 25/07/2018 Dry, with sunny intervals. Temperature ranges 18 to 24°C

Round 43 22/08/2018 Dry, mostly cloudy with sunny intervals. Temperature ranges 20 to 25°C

0

10

20

30

40

50

60

70

80

90

10020

21

22

23

24

25

26

27

28

29

30

Date

Water Level in KMA Monitoring Boreholes vs Daily Rainfall

Manual BHA Manual BHB Manual BHC Manual BHD Manual BHE KMA Rainfall