waterman numbered report template - brentcrosslondon · test result 1.8 0.1 n=9 n60=9 n=8 n60=8...

Project Details

Figure Ref

Date

Figure Title

File Location

Figure 2: Exploratory Hole Location Plan

\\s-lncs\wiel\projects\wic15997\100\graphics\spec\issued figures

WIC15997-100_GR_SPEC_2C

August 2016

WIC15997-100: Brent Cross

www.watermangroup.com

N

Reproduced from the Ordnance Survey maps with the permission of the Controller of Her Majesty’s Stationery Office,© Crown copyright, Waterman Infrastructure & Environment, Pickfords Wharf, Clink Street, London SE1 9DG. Licence number LAN1000628.

© WATERMAN INFRASTRUCTURE & ENVIRONMENT

BH81555m

BH81315m

BH81130m

BH81015m

ANTICIPATEDGROUNDWATER

FLOW DIRECTION

WS802

BH80830m

BH809 / Soakage Test 215m

BH80430m

BH80315m


CBR1

CBR2

CBR3

CBR4

CBR5

CBR6

CBR7

BH80155m

BH80515m

BH80615m

BH80715m

BH81215m


Approximate Location of Proposed Basement

Proposed Boreholes

Proposed Window Samples with Installationin Taplow Gravel Formation

Note:

1. Do not scale from this drawing.

Proposed BRE Soakage Test Locations

Proposed CBR Test - at 400mm belowfinished road levels

Archaeological Study Area

WS804

WS805

WS801

WS803

Historical Investigation Locationswith Installation to be Monitored

Site & Location:

Phase 1BN - Brent Cross Shopping Centre

Hendon, London NW4 3FPRotary borehole log Borehole No: BH801

Client: Hammerson & Standard Life Investment Coords (E/N): 522962.70 - 187844.30 Sheet 1 of 6

Engineer: Waterman Infrastructure & Environment Ltd Ground Level (m): 43.59 Report No: 10015/JRCB

Remarks:- a) Coordinates/ground level by GPS; checked against Plowman Craven Topographical Survey (Ref: 29053T-01-Z1-1, Jul 13)b) Open-hole drilling from GL-4.50m; rotary coring (GeoborS) from 4.50m-55.50m (102mm dia core) - water/polymer flushc) Monitoring pipe (19mm ID) installed to 52.0m: response zone with slotted pipe from 51.00m to 48.00m

Core rundepth (m)

4.50-

6.00

6.00-

7.50

7.50-

9.00

9.00-

10.50

TCRSCRRQD

9300

8000

3300

8700

IfMinAveMax

Samples and Tests

Type

E/PID

E/PID

SPT/S

CS

SPT/S

CS

SPT/S

SPT/S

CS

CS

Depth(m)

0.50

1.50

4.50

5.15 - 5.40

6.00

6.90 - 7.30

7.50

9.00

9.20 - 9.50

9.70 - 10.05

Test result

1.8

0.1

N=9N60=9

N=8N60=8

N=13N60=13

N=16N60=15

Strata

Depth(m)

0.45

0.90

1.20

4.50

7.70

9.60

10.00

Level(mOD)

43.14

42.69

42.39

39.09

35.89

33.99

33.59

LegendStrata Description

MADE GROUND: asphalt over concrete.

MADE GROUND: firm brown/ grey silty gravelly clay. Gravel is subangular to rounded fine to coarse flint and brick.

Firm to stiff orange brown locally mottled grey silty CLAY with rare sand pockets.CLAY (Driller's description from open-hole drilling)

Firm fissured brown mottled orange silty CLAY with rare grey gleying and occasional selenite crystals.

...heavily fissured at 5.50m

...claystone fragments at 5.60m

...pyrite nodule 6.45m

...orange silt/sand partings on fissure planes. Increasing silt content below 7.30m

Stiff fissured grey silty CLAY with rare burrows .

Stiff fissured grey silty CLAY with rare becoming occasional localised light grey and black patches and thin silt/sand partings. Rare pyrite nodules.

Continued on next sheet

Backfill /Installation

1

2

3

4

5

6

7

8

9

10

Hole Depth(m)

Diameter (mm)

55.50 146

Casing Depth (m)

Casing (mm)

55.50 146

Water StrikeWater (m) Remarks Depth

Sealed (m)No inflows observed

Progress

Date Time Depth(m)

Casing(m)

Water(m)

26/09/2016 16:00 13.50 13.50 3.427/09/2016 08:00 13.50 13.50 7.127/09/2016 16:00 21.00 21.00 2.328/09/2016 08:00 21.00 21.00 3.728/09/2016 16:00 36.00 36.00 3.329/09/2016 08:00 36.00 36.00 5.1

Prelim

inary

Site & Location:






Core rundepth (m)

10.50-

12.00

12.00-

13.50

13.50-

15.00

15.00-

16.50

16.50-

18.00

18.00-

19.50

TCRSCRRQD

8000

10000

2700

000

3300

000

IfMinAveMax

Samples and Tests

Type

SPT/S

CS

SPT/S

CS

SPT/S

D

D

SPT/S

SPT/S

SPT/S

SPT/S

D

Depth(m)

10.50

11.00 -11.40

12.00

12.50 -12.90

13.50

13.80

14.80

15.00

16.50

18.00

19.50

19.90

Test result

N=23N60=22

N=25N60=24

N=26N60=25

N=25N60=24

N=29N60=28

N=27N60=26

N=17N60=16

Strata

Depth(m)

16.50

19.50

20.00

Level(mOD)

27.09

24.09

23.59


Stiff grey fissured silty CLAY with rare becoming occasional localised light grey and black patches and thin silt/sand partings. Rare pyrite nodules

...reduction in silt/sand partings

Note: core loss between 13.50m and 21.00m was due large claystone pushed down by core bit. Drill string was withdrawn twice to attempt to clear but without success

Stiff fissured brown mottled grey silty CLAY with rare orange sand/silt localised patches. Occasional claystone fragments and rare selenite crystals .

Stiff fissured dark grey slightly silty CLAY with rare claystone and pyrite nodules.



11

12

13

14

15

16

17

18

19

20

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

29/09/2016 16:00 45.00 45.00 1.230/09/2016 08:00 45.00 45.00 4.430/09/2016 16:00 52.50 52.50 0.603/10/2016 08:00 52.50 9.50 9.503/10/2016 16:00 55.50 55.50 26.3

Prelim

inary

Site & Location:






Core rundepth (m)

19.50-

21.00

21.00-

22.50

22.50-

24.00

24.00-

25.50

25.50-

27.00

27.00-

28.50

28.50-

30.00

TCRSCRRQD

5300

6600

10000

8700

8700

10000

10000

IfMinAveMax

Samples and Tests

Type

D

SPT/S

CS

D

CS

D

D

CS

D

SPT/S

CS

CS

CS

CS

CS

SPT/S

Depth(m)

20.30

21.00

21.60 -21.82

22.20

22.80 -23.20

23.30

23.80

24.40 -24.80

25.20

25.50

26.36 -26.76

27.70 -28.10

28.10 -28.50

28.50 -28.90

29.10 -29.50

30.00

Test result

N=17N60=16

N=30N60=29

Strata

Depth(m)

22.10

22.50

23.50

23.80

28.60

30.00

Level(mOD)

21.49

21.09

20.09

19.79

14.99

13.59


Stiff fissured dark grey slightly silty CLAY with rare claystone and pyrite nodules.

Very stiff fissured dark grey slightly sandy silty CLAY with occasional localised light grey sand/silt patches. Rare pyrite fragments.Very stiff fissured dark grey silty CLAY.

Very stiff fissured greenish grey slightly sandy silty CLAY with occasional lignite.Very stiff fissured brownish grey slightly sandy silty CLAY. Occasional localised light grey sand/silt partings and patches with rare pyrite nodules.

...clay appears mottled grey/green at 25.50m

...lignite seam at 28.55mVery stiff fissured dark grey silty CLAY with rare grey silt/sand partings.



21

22

23

24

25

26

27

28

29

30

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Site & Location:






Core rundepth (m)

30.00-

31.50

31.50-

33.00

33.00-

34.50

34.50-

36.00

36.00-

37.50

37.50-

39.00

39.00-

40.50

TCRSCRRQD

9000

8700

10000

8700

10000

10000

8700

IfMinAveMax

Samples and Tests

Type

D

CS

CS

D

CS

CS

SPT/SCS

CS

D

D

D

DCSSPT/S

CS

CS

Depth(m)

31.20

31.50 -31.76

32.10 -32.56

33.10

33.70 -34.05

34.05 -34.40

34.5034.50 -34.70

35.30 -35.60

36.40

36.80

37.20

38.7038.80 -39.0039.00

39.60 -39.9039.90 -40.30

Test result

N=31N60=30

N=39N60=38

N=40N60=39

Strata

Depth(m)

31.50

32.60

34.70

35.40

38.00

39.45

40.00

Level(mOD)

12.09

10.99

8.89

8.19

5.59

4.14

3.59


Very stiff fissured dark grey slightly sandy silty CLAY with occasional localised light grey silt/sand partings.

...rare pyrite nodules and fossil fragments at 31.20m

Very stiff fissured dark grey fissured silty CLAY with occasional light grey silt/sand partings. Pyrite nodules and shell fragments throughout.

Very stiff fissured dark grey slightly sandy silty CLAY with occasional light grey silt/sand patches with rare pyrite nodules.

Very stiff fissured friable very dark grey silty CLAY with rare becoming occasional sand pockets.

Very stiff fissured friable bluish grey mottled yellow and red fissured CLAY.

...becoming less fissured below 36.00m

Very stiff fissured friable bluish grey mottled yellow and red silty CLAY. Locally sandy with partings of fine sand.

Very stiff fissured friable yellow mottled bluish grey, red and purple slightly sandy silty CLAY. Locally sandy.



31

32

33

34

35

36

37

38

39

40

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Site & Location:






Core rundepth (m)

40.50-

42.00

42.00-

43.50

43.50-

45.00

45.00-

46.50

46.50-

48.00

48.00-

49.50

TCRSCRRQD

10000

10000

8300

9300

000

3300

IfMinAveMax

Samples and Tests

Type

D

DCS

CS

D

CS

D

DSPT/C

CS

CS

CS

CS

D

SPT/C

SPT/C

SPT/C

Depth(m)

40.40

40.7040.70 -41.10

41.25 -41.65

41.80

42.10 -42.40

42.75

43.4043.50

43.80 -44.10

44.50 -44.80

45.00 -45.30

45.50 -45.80

46.20

46.50

48.00

49.50

Test result

N=50N60=48

N>50*

N>50*

N>50*

Strata

Depth(m)

46.30

48.00

49.50

50.00

Level(mOD)

-2.71

-4.41

-5.91

-6.41


Very stiff fissured friable yellow mottled bluish grey, red and purple slightly sandy silty CLAY. Locally sandy.

...below 41.20m, predominantly red in colour with no fissuring

...sand content lower from 41.60m to 43.50m

...below 42.70m, predominantly grey in colour

...below 45.80m, sand content decreases

Zone of core loss with no recovery; probably due to a high content of rounded flint gravel.

Recovered as dark grey GRAVEL. Gravel is rounded fine to coarse flint.

....assumed zone of core loss: 48.50m to 49.50m




41

42

43

44

45

46

47

48

49

50

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Site & Location:






Core rundepth (m)

49.50-

51.00

51.00-

52.50

52.50-

54.00

54.00-

55.50

TCRSCRRQD

000

000

1007339

805647

IfMinAveMax

40160250

Samples and Tests

Type

SPT/C

DSPT/C

CS

CS

CS

SPT/CCS

CS

D

SPT/C

Depth(m)

51.00

52.5052.50

52.85 -53.15

53.40 -53.6053.60 -53.80

54.0054.15 -54.30

54.50 -54.7054.70

55.50

Test result

N>50*

N>50*

N=44N60=43

N>50*

Strata

Depth(m)

52.50

52.80

55.50

Level(mOD)

-8.91

-9.21

-11.91



Stiff dark grey mottled dark green silty very sandy CLAY. Occasional to many pockets of silt and sand. Rare shell fragments.Weak low to medium density off white CHALK. Fractures are closely to medium spaced horizontal to subhorizontal clean. Rare weathered surface. Rare flints.

...highly fractured zone at 53.90m with a flint nodule

End of borehole at 55.50 m


51

52

53

54

55

56

57

58

59

60

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Progress & Observations

BH commenced: 14/09/2016

BH/casing diameter: 150mm

Inspection pit to 1.20m

Chiselling on obstruction between 3.20m and 3.40m (1 hr)

BH cased to 4.50m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

42.54

41.54

39.94

39.34

35.94

32.74

Legend Strata Descriptions

MADE GROUND: asphalt.MADE GROUND: dark brown silty very gravelly sand. Gravel is angular to subrounded flint brick and concrete.

MADE GROUND: dark grey to dark brown slightly gravelly silty sandy clay. Gravel is subangular to subrounded flint concrete and clinker.

MADE GROUND: dark brown and green/grey slightly gravelly silty sandy clay. Gravel is fine to coarse subangular to subrounded flint, concrete and possible sandstone; occasionally cobble-sizedFirm becoming stiff dark brown mottled brown/orange silty CLAY with occasional blue grey gleying. Occasionally laminated with rare sand partings.

Firm to stiff becoming stiff fissured dark brown/grey silty CLAY. Locally laminated with occasional silt partings and selenite.


Backfill / Installation

1

2

3

4

5

6

7

8

9

10

B 0.20

E 0.50PID 0.50 0.2B 0.70

C/B 1.20SPT/C 1.20 N=16

N₆₀=19E 1.50PID 1.50 0.7D 1.80

C/B 2.00SPT/C 2.00 N=11

N₆₀=13

E 2.50PID 2.50 1.2D 2.80

C/B 3.00SPT/C 3.00 N>50*

E 3.50PID 3.50 0.6D 3.70

S/D 4.00SPT/S 4.00 N=14

N₆₀=17

D 4.80

U 5.00

D 5.50

D 5.70

S/D 6.00SPT/S 6.00 N=17

N₆₀=20

D 6.80

U 7.00

D 7.50

D 7.80

S/D 8.00SPT/S 8.00 N=22

N₆₀=26

D 8.80

D 9.00U 9.00

D 9.80

S/D 10.00

0.20

1.20

2.80

3.40

6.80

10.00

Site &Location:


Hendon, London NW4 3FPBorehole No: BH802

Client: Hammerson & Standard Life Investment Coordinates: 523016E, 187813N Sheet 1 of 2

Engineer: Waterman Infrastructure & Environment Ltd Ground Level: +42.74mOD Report No: 10015/JRCB

Key: U = Undisturbed B = Bulk D = Small disturbed W = Water ES = glass jar & plastic tub E = glass jar SPT/S = split spoon SPT/C = solid cone PP = Pocket Penetrometer [kg/cm²]HV = Hand Vane [kPa] PID = Photo Ionisation Detector [ppm - Isobutylene Equivalent, PhoCheck Tiger, 10.6eV lamp] * = full SPT penetration not achieved - see summary sheet

Borehole type:

Cable PercussionRemarks: a) Coordinates/ground level by GPS; checked against Plowman Craven Topographical Survey (Ref: 29053T-01-Z1-1, Jul 13) Borehole No:

BH802

Prelim

inary


End of Shift: 14/09/2016BH depth: 10.00mCasing depth: 4.50mWater depth pm: DryStart of shift: 15/09/2016Water depth am: 9.60m

BH complete: 15/09/2016BH depth: 15.00mWater depth: Dry

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

27.74


Stiff fissured dark brown/grey silty CLAY. Locally laminated with occasional silt partings and selenite.

End of hole at 15.00m


11

12

13

14

15

16

17

18

19

20

SPT/S 10.00 N=20N₆₀=24

D 11.40

U 12.00

D 12.50

D 13.20

S/D 14.00SPT/S 14.00 N=24

N₆₀=29

D 15.00 15.00

Site &Location:






Borehole type:


BH802

Prelim

inary





Water inflow at 2.80m:- rose to 2.40m (20 mins)- sealed at 3.80m

BH cased to 4.30m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

42.19

41.69

41.39

40.89

40.29

38.74

36.54

32.39


MADE GROUND: asphalt.MADE GROUND: brown slightly silty sandy to very sandy gravel. Gravel is subangular to subrounded, fine to coarse flint, brick and concrete. Occasional pockets of ash.

MADE GROUND: firm to stiff brown/orange mottled grey clay with occasional pockets of silt and sand. Rare decaying roots.MADE GROUND: soft to firm dark grey mottled dark green/grey slightly gravelly silty clay. Gravel is subrounded, fine to coarse flint and brick. Occasional sand pockets and partings. Organic odour.Firm to stiff brown/orange mottled grey gravelly CLAY. Gravel is subangular to rounded, fine to coarse flint. Occasional pockets of silt and sand.

Dense brown slightly clayey to clayey silty sandy GRAVEL. Gravel is subrounded, fine to coarse flint. Occasional pockets of brown sandy very gravelly clay

Firm becoming stiff brown mottled brown/orange silty CLAY with localised blue grey gleying and occasional pockets/partings of silt. Rare to occasional decaying roots.

….becoming dark brown with occasional selenite at 5.50m

Stiff fissured dark grey silty CLAY with occasional pockets and parting of silt and sand.

….rare claystone fragment at 9.90m



1

2

3

4

5

6

7

8

9

10

B 0.20

E 0.50PID 0.50 0.1B 0.70

B 1.00E 1.00

PID 1.00 0.1S/D 1.20

SPT/S 1.20 N=10N₆₀=11B 1.50

E 1.50PID 1.50 0.0

C/B 2.20SPT/C 2.20 N>50*

E 2.50PID 2.50 0.0

C/B 3.20SPT/C 3.20 N=34

N₆₀=37

D 3.80

B 4.00S/D 4.00

SPT/S 4.00 N=14N₆₀=15

U 5.00

D 5.50

B 6.00S/D 6.00

SPT/S 6.00 N=17N₆₀=18D 6.05

D 6.75

U 7.00

D 7.50

D 7.75

S/D 8.00SPT/S 8.00 N=21

N₆₀=23

D 8.75

U 9.00

D 9.50

D 9.75

S/D 10.00

0.20

0.70

1.00

1.50

2.10

3.65

5.85

10.00

Site &Location:






Borehole type:


BH803

Prelim

inary



Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

27.39


Stiff fissured dark grey silty CLAY with occasional pockets and parting of silt and sand.

….rare shell fragments

….occasional to many pockets of silt

….occasional partings of sandEnd of hole at 15.00m


11

12

13

14

15

16

17

18

19

20

SPT/S 10.00 N=23N₆₀=25

D 11.25

U 12.00

D 12.50

D 13.25

S/D 14.00SPT/S 14.00 N=26

N₆₀=28

D 15.00 15.00

Site &Location:






Borehole type:


BH803

Prelim

inary





Water seepage at 4.50m:- no rise in 20 minutes- sealed at 5.20m

BH cased to 6.00m

End of Shift: 14/09/2016BH depth: 6.50mCasing depth: 5.50mWater depth pm: DryStart of shift: 15/09/2016Water depth am: Dry

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

41.91

41.41

37.41

37.01

32.36

32.11


MADE GROUND: asphalt.MADE GROUND: grey sandy gravel. Gravel is subangular fine to coarse flint brick concrete wood glass and possible ACM.

MADE GROUND: brown/orange clayey sandy gravel. Gravel is subangular to subrounded fine to coarse flint and brick. Occasional pockets of gravelly to very gravelly clay.

….very loose at 4.20m

MADE GROUND: soft dark grey slightly gravelly to gravelly clay. Gravel is subangular fine to coarse flint brick and fragments of wood. Much organic material.Stiff fissured brown mottled grey CLAY with occasional pockets of silt, sand and selenite. Occasional decayed roots in upper levels

Stiff fissured dark grey silty CLAY with occasional pockets



1

2

3

4

5

6

7

8

9

10

B 0.30

E 0.50PID 0.50 0.2B 0.70

E 1.00PID 1.00 0.2C/B 1.20

SPT/C 1.20 N=22N₆₀=24E 1.50

PID 1.50 0.2

C/B 2.20SPT/C 2.20 N=25

N₆₀=27E 2.50PID 2.50 0.2

C/B 3.20SPT/C 3.20 N=10

N₆₀=11E 3.50PID 3.50 0.2

C/B 4.20SPT/C 4.20 N=2

N₆₀=2E 4.50PID 4.50 0.2

PID 5.00 0.2

D 5.30

U 5.50

B 6.00E 6.00

S/D 6.00SPT/S 6.00 N=17

N₆₀=18

D 6.75

U 7.00

D 7.50

D 7.75

S/D 8.00SPT/S 8.00 N=21

N₆₀=23

D 8.75

U 9.00

D 9.50

S/D 10.00

0.20

0.70

4.70

5.10

9.75

10.00

Site &Location:






Borehole type:

Cable PercussionRemarks: a) Coordinates/ground level by GPS; checked against Plowman Craven Topographical Survey (Ref: 29053T-01-Z1-1, Jul 13)

b) Monitoring pipe (50mm ID) installed to 5.00m: response zone with slotted (geo-wrapped) pipe from 5.00m to 1.00mBorehole No:

BH804

Prelim

inary


Chiselling on claystone from 11.40m to 11.80m; 0.5 hoursWater seepage at 11.50m'- no rise in 20 minutes'- not sealed

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

28.11

22.11


and partings of silt and sand.Stiff fissured dark grey silty CLAY with occasional pockets and partings of silt and sand.

Very stiff fissured dark grey silty CLAY with occasional partings of silty fine sand.



11

12

13

14

15

16

17

18

19

20

SPT/S 10.00 N=23N₆₀=25

B 10.50

D 11.25B 11.40

U 12.00

D 12.50

D 13.25

S/D 14.00SPT/S 14.00 N=28

N₆₀=30

D 15.25

U 16.00

D 16.50

D 17.25

S/D 18.00SPT/S 18.00 N=30

N₆₀=32

D 19.25

U 20.00

14.00

20.00

Site &Location:






Borehole type:



BH804

Prelim

inary

Progress & ObservationsSamples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

17.66

12.11


Very stiff fissured dark grey silty CLAY with occasional pockets/partings of silty fine sand.

Very stiff dark grey slightly sandy to sandy silty CLAY with many partings of silty sand.



21

22

23

24

25

26

27

28

29

30

D 20.50

D 21.25

S/D 22.00SPT/S 22.00 N=34

N₆₀=37

D 23.25

U 24.00

D 24.45

D 25.25

S/D 26.00SPT/S 26.00 N=36

N₆₀=39

D 27.25

U 28.00

D 28.50

D 29.00

S/D 29.55SPT/S 29.55 N=37

N₆₀=40

24.45

30.00

Site &Location:






Borehole type:



BH804

Prelim

inary



Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

8.36

7.11


Very stiff dark grey slightly sandy to sandy silty CLAY with many partings of silty sand.

Very stiff fissured light grey mottled red/brown and yellow/brown silty CLAY with rare pockets of silt and sand.



31

32

33

34

35

36

37

38

39

40

D 31.00

U 32.00

D 32.50

D 33.25

U 34.00

B 34.50

33.75

35.00

Site &Location:






Borehole type:



BH804

Prelim

inary






End of Shift: 13/09/2016BH depth: 6.80mCasing depth: 6.00mWater depth pm: 5.60mStart of shift: 14/09/2016Water depth am: 5.60m

BH cased to 8.00m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

41.13

39.03

38.13

35.83

34.53

33.73

31.83

31.33


MADE GROUND: asphalt.MADE GROUND: dark brown slightly silty very gravelly sand. Gravel is angular to rounded fine to coarse flint, brick, clinker and concrete.

MADE GROUND: soft to firm light brown mottled brown and black slightly sandy silty gravelly clay. Gravel is angular to subrounded fine to coarse brick flint and concrete. Much organic material

Firm green/brown mottled dark brown silty CLAY with occasional rootlets. Locally peaty

Firm green/brown mottled yellow/brown slightly sandy very silty CLAY with occasional sand partings, rootlets and rare black staining.

Soft to firm green /brown mottled yellow/brown silty sandy very gravelly CLAY. Gravel is angular to subrounded fine to medium flint and chert.

Firm to stiff fissured brown mottled brown/orange silty CLAY. Locally slightly laminated with occasional partings of silt.

Stiff fissured dark brown silty CLAY. Occasional silt partings and pockets of selenite.



1

2

3

4

5

6

7

8

9

10

B 0.20

E 0.50PID 0.50 0.1B 0.60

E 1.00PID 1.00 0.1C/B 1.20

SPT/C 1.20 N=36N₆₀=43

C/B 2.00E 2.00

SPT/C 2.00 N=10N₆₀=12

PID 2.00 0.2

C/B 3.00E 3.00

SPT/C 3.00 N=8N₆₀=10

PID 3.00 0.4

D 3.70E 3.70

PID 3.70 0.2S/D 4.00

SPT/S 4.00 N=5N₆₀=6

D 4.70

U 5.00

D 5.50

D 5.70

S/D 6.00SPT/S 6.00 N=6

N₆₀=7

D 6.80

B 7.00U/NR 7.00

D 7.60

S/D 8.00SPT/S 8.00 N=16

N₆₀=19

D 8.50

U 9.00

D 9.50

D 9.80

S/D 10.00

0.20

2.30

3.20

5.50

6.80

7.60

9.50

10.00

Site &Location:






Borehole type:


BH805

Prelim

inary



Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

26.33


Stiff fissured dark brown silty CLAY. Occasional silt partings and pockets of selenite.



11

12

13

14

15

16

17

18

19

20

SPT/S 10.00 N=19N₆₀=23

D 11.50

U 12.00

D 12.50

D 13.50

S/D 14.00SPT/S 14.00 N=27

N₆₀=32

D 15.00 15.00

Site &Location:






Borehole type:


BH805

Prelim

inary





Chiselling on obstruction from 2.00m to 2.20m (1 hr)


End of Shift: 21/09/2016BH depth: 8.60mCasing depth: 8.00mWater depth pm: 3.00mStart of shift: 22/09/2016Water depth am: Dry

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

41.04

38.59

37.24

34.54

32.79

31.24


MADE GROUND: grass over topsoil.MADE GROUND: dark brown clayey silty gravelly to very gravelly sand. Gravel is subangular to subrounded fine to coarse flint brick concrete and clinker.

...becoming light brown below about 1.20m

...cobbles of concrete

MADE GROUND: soft dark grey mottled dark green/grey and yellow brown silty clay. Occasional rootlets and organic flecks. Strong organic odour.

MADE GROUND: dark brown mottled green/grey clayey silty very sandy gravel. Gravel is subangular to rounded flint and sandstone. Occasional cobbles of brick and concrete.

...becoming silty very sandy very gravelly clay between 4.70m and 5.70m

Firm becoming stiff fissured brown mottled orange brown and blue grey silty CLAY. Locally sandy with occasional sand partings.

Stiff fissured brown mottled grey silty CLAY. Occasional silt and sand partings. Occasional selenite pockets.



1

2

3

4

5

6

7

8

9

10

B 0.20

B 0.50E 0.50

PID 0.50 0.1

B 1.00

S/D 1.20SPT/S 1.20 N=6

N₆₀=7E 1.50PID 1.50 0.1

B 2.00

S/D 2.20SPT/S 2.20 N=6

N₆₀=7

B 2.70

B 3.00E 3.00

PID 3.00 0.2

U/NR 3.50

B 4.00S/D 4.10

SPT/S 4.10 N=4N₆₀=5

B 4.70

S/D 5.00SPT/S 5.00 N=5

N₆₀=6

D 5.70

S/D 6.00SPT/S 6.00 N=6

N₆₀=7

D 6.70

U 7.00

D 7.45D 7.60

S/D 8.00SPT/S 8.00 N=22

N₆₀=26

D 8.60

U 9.00

D 9.45

D 9.70

S/D 10.00

0.20

2.65

4.00

6.70

8.45

10.00

Site &Location:






Borehole type:


BH806

Prelim

inary


BH cased to 10.00m


Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

25.79


Very stiff fissured brown grey silty CLAY. Rare silt/sand partings and selenite pockets.



11

12

13

14

15

16

17

18

19

20

SPT/S 10.00 N=26N₆₀=31

D 10.60

D 11.60

U 12.00

D 12.60

D 13.60

U 14.00

D 14.60

S/D 15.00SPT/S 15.00 N=36

N₆₀=43

15.45

Site &Location:






Borehole type:


BH806

Prelim

inary





BH cased to 4.00m

End of Shift: 20/09/2016BH depth: 7.70mCasing depth: 4.00mWater depth pm: DryStart of shift: 21/09/2016Water depth am: Dry

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

42.50

42.20

41.20

40.80

39.50

38.40

35.40

32.60


MADE GROUND: asphalt.MADE GROUND: red brown slightly silty gravel. Gravel is subangular to subrounded fine to coarse brick and concrete.MADE GROUND: soft to firm dark brown slightly gravelly silty sandy clay. Gravel is subangular fine to coarse flint brick quartzite and clinker.

MADE GROUND: soft green/grey mottled black slightly silty slightly gravelly very silty clay. Gravel is subangular to subrounded fine to medium flint and brick. Rare pockets of sand. Organic odour and organic material. Firm locally soft orange/brown locally mottled grey silty CLAY with rare pockets of sand. Rare decaying roots.

...becoming gravelly at 3.00mFirm to stiff orange brown locally mottled grey silty CLAY with occasional pockets of silt and rare sand. Rare black flecks possible manganese staining.

Stiff fissured dark brown mottled blue/grey silty CLAY with occasional silt partings and pockets. Rare sand pockets. Occasional selenite. Rare decaying roots.

...becoming slightly sandy at about 5.70m

...pyrite nodule at 6.70m

Stiff to very stiff fissured dark grey silty CLAY with occasional pockets and partings of silt. Rare pockets of sand.

...rare shell fragments at about 8.40m



1

2

3

4

5

6

7

8

9

10

D 0.50E 0.50

PID 0.50 0.6

B 1.00D 1.00E 1.00

PID 1.00 0.8S/D 1.20

SPT/S 1.20 N=5N₆₀=6E 1.50

PID 1.50 0.4D 1.70D 1.80HV 1.80 42U 2.00D 2.45E 2.50

PID 2.50 0.1D 2.60B 3.00

S/D 3.10SPT/C 3.10 N=10

N₆₀=12D 3.60

U 4.00

D 4.45

D 4.70

S/D 5.00SPT/S 5.00 N=18

N₆₀=22

D 5.70

U 6.00

D 6.45

D 6.70

S/D 7.20SPT/S 7.20 N=27

N₆₀=32

D 7.70

U 8.00

D 8.45D 8.60

S/D 9.00SPT/S 9.00 N=26

N₆₀=31

D 9.60

0.10

0.40

1.40

1.80

3.10

4.20

7.20

10.00

Site &Location:






Borehole type:



BH807

Prelim

inary


Chiselling on claystone from 11.00m to 12.00m (1 hr)


Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

27.15


Very stiff fissured dark grey silty CLAY with occasional pockets and partings of silt. Rare pockets of sand.

...claystone fragment at 11.00m



11

12

13

14

15

16

17

18

19

20

U 10.10

D 10.55D 10.70

D 11.00

S/D 12.20SPT/S 12.20 N=30

N₆₀=36

D 12.70

D 13.20

U 14.10

D 14.55D 14.60

S/D 15.00SPT/S 15.00 N=34

N₆₀=41

15.45

Site &Location:






Borehole type:



BH807

Prelim

inary





Chiselling on obstruction between 3.00m and 3.30m (0.5 hr)

BH cased to 4.00m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

41.71

40.51

38.81

35.31

32.61

32.11



MADE GROUND: orange brown silty gravelly sand. Gravel is subangular to subrounded flint and rare brick and clinker. Rare ash pockets.

...occasional pockets of gravelly clay at 1.00m

MADE GROUND: dark grey mottled black gravelly very silty sand. Gravel is subangular to subrounded fine to coarse flint brick and concrete. Occasional ash pockets. Rare wood fragments. Odour present.

Firm becoming stiff orange brown locally mottled grey silty CLAY with occasional pockets of silt and sand. Occasional decaying roots. Occasional selenite.

Stiff fissured dark brown mottled orange/brown silty CLAY with occasional pockets of silt and selenite.

Stiff fissured dark grey silty CLAY with rare pockets of silt. Rare shell fragments.



1

2

3

4

5

6

7

8

9

10

B 0.40E 0.50

PID 0.50 0.6

B 0.90E 1.00

PID 1.00 0.3B 1.20

SPT/C 1.20 N=59N₆₀=71E 1.50

PID 1.50 0.5D 1.80

B 2.00E 2.00

SPT/C 2.00 N>50*PID 2.00 1.6

D 2.70

B 3.00E 3.00

SPT/C 3.00 N>50*PID 3.00 4.2HV 3.30 46D 3.60

E 4.00S/D 4.00

SPT/S 4.00 N=9N₆₀=11

PID 4.00 0.2

D 4.80

U 5.00

D 5.50

D 5.70

S/D 6.00SPT/S 6.00 N=14

N₆₀=17

D 6.80

U 7.00

D 7.50

D 7.80

S/D 8.00SPT/S 8.00 N=19

N₆₀=23

D 8.70

U 9.00

D 9.50

D 9.70

S/D 10.00

0.40

1.60

3.30

6.80

9.50

10.00

Site &Location:






Borehole type:



BH808

Prelim

inary




Localised slight seepages observed between 15.50m and 35.00m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

29.61

22.11


Stiff fissured dark grey silty CLAY with rare pockets of silt.

...claystone at 10.20m to 10.30m

Very stiff fissured dark grey silty CLAY with occasional pockets of silt and sand.


...claystone fragment at 17.50m



11

12

13

14

15

16

17

18

19

20

SPT/S 10.00 N=49N₆₀=59

D 10.80

U 12.00

D 12.50

D 12.80

S/D 14.00SPT/S 14.00 N=32

N₆₀=38

D 15.50

U 16.00

D 16.50

D 17.50

S/D 18.00SPT/S 18.00 N=32

N₆₀=38

D 19.50

U 20.00

12.50

20.00

Site &Location:






Borehole type:



BH808

Prelim

inary

Progress & ObservationsSamples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

17.61

12.11


Very stiff fissured dark grey silty CLAY with occasional pockets of silt and sand.

...pyrite nodule at 21.50m and 23.50m

Very stiff fissured dark grey slightly sandy silty CLAY with occasional to many pockets of sand.





21

22

23

24

25

26

27

28

29

30

D 20.50

D 21.50

S/D 22.00SPT/S 22.00 N=36

N₆₀=43

D 23.50

U 24.00

D 24.50

D 25.50

S/D 26.00SPT/S 26.00 N=41

N₆₀=49

D 27.50

U 28.00

D 28.50

D 29.50

S/D 30.00

24.50

30.00

Site &Location:






Borehole type:



BH808

Prelim

inary


Water inflow at 35.00m:- rose to 31.00m (30 mins)- not sealedBH complete: 20/09/2016BH depth: 35.00mWater depth: 31.00m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

8.51

7.11


Very stiff dark grey slightly sandy silty CLAY with occasional pockets and partings of sand.

Very stiff fissured grey mottled red/orange/yellow silty CLAY.



31

32

33

34

35

36

37

38

39

40

SPT/S 30.00 N=48N₆₀=58

D 31.50

U 32.00

D 32.50

D 33.60

S/D 34.00SPT/S 34.00 N=46

N₆₀=55

D 35.00

33.60

35.00

Site &Location:






Borehole type:



BH808

Prelim

inary





Falling head test carried out at 1.25m

Water seepage at 2.00m:- no rise in 20 minutes- sealed at 3.00m

BH cased to 4.00m

End of Shift: 22/09/2016BH depth: 8.60mCasing depth: 4.00mWater depth pm: 0.10mStart of shift: 23/09/2016Water depth am: Dry

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

41.64

40.94

39.44

38.54

37.54

32.14


MADE GROUND: asphalt.

MADE GROUND: dark brown mottled black clayey silty gravelly sand. Gravel is subangular to subrounded fine to coarse brick concrete glass clinker flint.

MADE GROUND: soft dark brown mottled black silty sandy gravelly clay. Gravel is subangular to rounded fine to medium flint sandstone brick and concrete.

MADE GROUND: firm locally soft green/grey mottled brown slightly gravelly silty clay. Gravel is subangular to rounded fine to coarse flint brick and concrete.

Soft to firm dark brown and black slightly gravelly silty sandy CLAY. Gravel is subangular to subrounded fine to medium flint. Organic staining and organic odour present.

Stiff fissured brown mottled orange brown silty CLAY with rare to occasional silt and sand partings. Occasional selenite pockets.



1

2

3

4

5

6

7

8

9

10

B 0.50E 0.50

B 1.00

S/D 1.20SPT/S 1.20 N=7

N₆₀=8E 1.50

D 1.70

S/D 2.00SPT/S 2.00 N=5

N₆₀=6

E 2.50

D 2.70

S/D 3.00SPT/S 3.00 N=4

N₆₀=5

E 3.50D 3.60

U/NR 4.00

D 4.60

S/D 5.00SPT/S 5.00 N=18

N₆₀=22

D 5.70

U 6.00

D 6.45

D 6.70

S/D 7.10SPT/S 7.10 N=16

N₆₀=19

D 7.60

U 8.00

D 8.45D 8.60

S/D 9.00SPT/S 9.00 N=24

N₆₀=29

D 9.60

U 10.00

0.50

1.20

2.70

3.60

4.60

10.00

Site &Location:






Borehole type:



BH809

Prelim

inary



Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

30.14

26.69


Stiff fissured brown mottled orange brown silty CLAY with rare to occasional silt and sand partings.

Very stiff fissured dark grey silty CLAY with rare to occasional pockets of silt and sand.

...possible pyrite at 12.60m




11

12

13

14

15

16

17

18

19

20

D 10.45D 10.60

S/D 12.00SPT/S 12.00 N=30

N₆₀=36

D 12.60

D 13.60

U 14.00

D 14.45D 14.60

S/D 15.00SPT/S 15.00 N=37

N₆₀=44

12.00

15.45

Site &Location:






Borehole type:



BH809

Prelim

inary





BH cased to 2.50m

Chiselling from 8.50m to 8.60m (0.25 hours)Water inflow at 8.50m:- rose to 8.40m (20 mins)- sealed at 8.60m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

41.07

40.87

40.37

38.67

37.97

35.77

34.97

31.47


MADE GROUND: concrete.

MADE GROUND: compact grey gravel.MADE GROUND: firm orange brown slightly gravel sandy clay. Gravel is subangular to subrounded fine to coarse flint. Rare ash pockets.

Stiff orange brown slightly sandy silty gravelly CLAY. Gravel is subrounded to rounded fine to coarse flint.

Firm brown locally grey slightly sandy slightly gravelly silty CLAY. Gravel is subangular to rounded fine to medium flint. Rare pockets of silt and sand.

Firm to stiff brown mottled grey silty CLAY with occasional partings and pockets of sand.

...occasional pockets of selenite at 4.50m

Stiff fissured brown mottled yellow/brown silty CLAY with occasional pockets of siltstone and selenite crystals

Stiff fissured dark grey silty CLAY with occasional partings of sand. Locally slightly sandy.




1

2

3

4

5

6

7

8

9

10

E 1.00PID 1.00 0.0B 1.20

SPT/C 1.20 N=22N₆₀=26E 1.50

PID 1.50 0.2

D 1.90B 2.00

SPT/C 2.00 N=28N₆₀=34

E 2.50PID 2.50 0.3D 2.80

B 3.00SPT/C 3.00 N=14

N₆₀=17

D 3.60

U 4.00

D 4.50

D 4.70

S/D 5.00SPT/S 5.00 N=15

N₆₀=18

D 5.70

U 6.00

D 6.50

D 6.80

S/D 7.00SPT/S 7.00 N=19

N₆₀=23

D 7.70

U 8.00

D 8.40

D 8.60

S/D 9.00SPT/S 9.00 N=23

N₆₀=28

D 9.70

U 10.00

0.40

0.60

1.10

2.80

3.50

5.70

6.50

10.00

Site &Location:






Borehole type:


BH810

Prelim

inary


BH complete: 28/09/2016BH depth: 15.00mWater depth: 14.80m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

26.97

26.47


Stiff becoming very stiff fissured dark grey silty CLAY with occasional partings of sand.

Very stiff fissured dark grey slightly sandy silty CLAY with occasional to many partings of sand and silt.



11

12

13

14

15

16

17

18

19

20

D 10.50

D 11.50

S/D 12.00SPT/S 12.00 N=29

N₆₀=35

D 13.50

U 14.00

D 14.50

D 15.00

14.50

15.00

Site &Location:






Borehole type:


BH810

Prelim

inary





BH cased to 3.00m


Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

41.1741.07

40.37

35.77

31.57



MADE GROUND: stiff brown mottled orange brown slightly sandy gravelly clay. Gravel is subangular to rounded fine to coarse flint and brick.MADE GROUND: firm brown mottled grey slightly gravelly silty clay. Gravel is subrounded fine to coarse flint. Rare to occasional pockets of silt and sand. (Possible natural)Firm to stiff brown mottled orange brown/grey silty CLAY. Rare partings of silt. Rare siltstone fragments. Rare to occasional decaying roots in upper levels.

...occasional pockets of selenite below 2.80m

...becoming slightly sandy with occasional pockets of silt and sand at 4.50m

Stiff fissured dark grey silty CLAY with occasional pockets/partings of sand. Rare pockets of selenite. Locally slightly sandy....becoming slightly sandy at 5.80m

...pyrite nodules at 6.80m

...claystone at 8.80m



1

2

3

4

5

6

7

8

9

10

B 0.40B 0.50D 0.50E 0.50

PID 0.50 1.4D 1.00E 1.00

PID 1.00 0.5S/D 1.20

SPT/S 1.20 N=10N₆₀=12

D 1.80

U 2.00

D 2.50

D 2.80

S/D 3.00SPT/S 3.00 N=12

N₆₀=14

D 3.70

U 4.00

D 4.50

D 4.80

S/D 5.00SPT/S 5.00 N=16

N₆₀=19

D 5.80

U 6.00

D 6.50

D 6.80

S/D 7.00SPT/S 7.00 N=19

N₆₀=23

D 7.90U 8.00

D 8.50

D 8.80

S/D 9.00SPT/S 9.00 N=24

N₆₀=29

D 9.70

U 10.00

0.400.50

1.20

5.80

10.00

Site &Location:






Borehole type:


b) Monitoring pipe (19mm ID) installed to 36.00m: response zone with slotted pipe from 33.00m to 36.00mBorehole No:

BH811

Prelim

inary



Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

29.57

21.57


Stiff fissured dark grey silty CLAY with occasional pockets and partings of silt/sand. Locally slightly sandy

...becoming slightly sandy at 10.50m

Very stiff fissured dark grey silty CLAY with occasional partings of silt/sand. Locally slightly sandy



11

12

13

14

15

16

17

18

19

20

D 10.30

D 11.60

S/D 12.00SPT/S 12.00 N=28

N₆₀=34

D 13.00

U 14.00

D 14.50

D 15.70

S/D 16.00SPT/S 16.00 N=34

N₆₀=41

D 17.40

U 18.00

D 18.50

D 19.40

S/D 20.00

12.00

20.00

Site &Location:






Borehole type:



BH811

Prelim

inary



Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

18.07

11.57


Very stiff fissured dark grey silty CLAY with occasional pockets and partings of silt and sand.

...claystone at 22.50m

Very stiff fissured dark grey slightly sandy silty CLAY with occasional to many pockets and partings of sand.

...becoming sandy at 26.50m

...occasional pyrite nodules 29.50m



21

22

23

24

25

26

27

28

29

30

SPT/S 20.00 N=33N₆₀=40

D 21.00

U 22.00

D 22.50

D 23.50

S/D 24.00SPT/S 24.00 N=40

N₆₀=48

D 25.30

U 26.00

D 26.50

D 27.50

S/D 28.00SPT/S 28.00 N=42

N₆₀=50

D 29.50

U 30.00

23.50

30.00

Site &Location:






Borehole type:



BH811

Prelim

inary


Water inflow at 34.20m:- rose to 33.60m (20 mins)- not sealed

BH complete: 27/09/2016BH depth: 36.00mWater depth: 35.70m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

7.37

5.57


Very stiff fissured dark grey silty CLAY. Locally sandy with occasional to many pockets and partings of sand.

Very stiff fissured light grey mottled red/orange/yellow silty CLAY.



31

32

33

34

35

36

37

38

39

40

D 30.50

D 31.70

S/D 32.00SPT/S 32.00 N=45

N₆₀=54

D 33.50

U 34.00

D 34.50

D 34.70

S/D 35.00SPT/S 35.00 N=48

N₆₀=58

D 36.00

34.20

36.00

Site &Location:






Borehole type:



BH811

Prelim

inary





Chiselling from 2.10m to 2.30m (0.5 hours)

BH cased to 3.00m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

41.69

40.69

40.39

39.79

38.99

37.29

34.99

31.79


MADE GROUND: asphalt.MADE GROUND: brown mottled orange brown slightly silty sandy gravel. Gravel is subangular fine to coarse flint brick and concrete.

MADE GROUND: firm dark green/grey slightly gravelly to gravelly silty clay. Gravel is subangular to rounded fine to coarse flint brick and metal. Rare to occasional pockets of ash. Occasional decaying roots. Organic odour.MADE GROUND: firm to stiff light brown mottled orange brown/grey slightly gravelly silty clay. Gravel is angular to subrounded fine to coarse brick and flint. Occasional pockets of silt and sand. Rare ash pockets. Rare black flecks possible manganese staining.MADE GROUND: light brown mottled grey slightly gravelly silty CLAY. Gravel is subangular fine to medium flint and brick. Firm to stiff brown mottled orange brown/grey silty CLAY with rare pockets of sand. Occasional pockets of selenite.

Stiff fissured brown mottled orange brown slightly sandy silty CLAY with occasional pockets and partings of silt and sand. Rare pockets of selenite.

Stiff fissured dark grey silty CLAY. Locally slightly sandy with occasional pockets of sand and rare shell fragments.



1

2

3

4

5

6

7

8

9

10

E 0.50PID 0.50 0.6

E 1.00PID 1.00 0.3HV 1.20 38

HV 1.50 60PID 1.50 1.2

B 2.10

D 2.80

S/D 3.00SPT/S 3.00 N=11

N₆₀=13

D 3.70

D 4.50

D 4.80

S/D 5.00SPT/S 5.00 N=14

N₆₀=17

D 5.70

U 6.00

D 6.50

D 6.80

S/D 7.00SPT/S 7.00 N=19

N₆₀=23

D 7.80

U 8.00

D 8.50

D 8.80

S/D 9.00SPT/S 9.00 N=26

N₆₀=31

D 9.80

U 10.00

0.10

1.10

1.40

2.00

2.80

4.50

6.80

10.00

Site &Location:






Borehole type:



BH812

Prelim

inary




Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

26.79


Stiff becoming very stiff fissured dark grey silty CLAY with occasional pockets of sand. Rare shells fragments.

...becoming slightly sandy at 10.50m

...becoming slightly sandy from 13.20m to 14.50m



11

12

13

14

15

16

17

18

19

20

D 10.50

D 11.50

S/D 12.00SPT/S 12.00 N=28

N₆₀=34

D 13.20

U 14.00

D 14.50

D 15.00 15.00

Site &Location:






Borehole type:



BH812

Prelim

inary






BH cased to 6.00m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

44.44

41.84

41.44

40.44

37.04

34.74



MADE GROUND: brown mottled orange brown silty gravelly sand. Gravel is subangular to rounded fine to coarse flint brick clinker and concrete.

MADE GROUND: concrete.

Firm brown mottled orange brown/grey slightly gravelly silty sandy CLAY. Gravel is subangular to subrounded fine to medium flint and sandstone. Rare to occasional silt and sand partings.

Firm becoming stiff fissured brown mottled orange brown/grey silty CLAY with rare partings of silt and sand.

...occasional selenite below 5.80m

Stiff fissured dark brown/grey silty CLAY with rare to occasional silt and sand partings. Rare to occasional pockets of selenite.



1

2

3

4

5

6

7

8

9

10

E 0.30PID 0.30 0.2B 0.50

B 1.20D 1.20E 1.20

SPT/C 1.20 N=23N₆₀=28

PID 1.20 0.1D 1.90B 2.00

SPT/C 2.00 N=11N₆₀=13E 2.20

PID 2.20 0.2

D 2.70

B 3.00SPT/C 3.00 N>50*

D 3.40E 3.50

PID 3.50 0.2

B 4.00SPT/C 4.00 N=11

N₆₀=13

D 4.80

S/D 5.00SPT/S 5.00 N=17

N₆₀=20

U 6.00

D 6.50

D 6.80

S/D 7.00SPT/S 7.00 N=18

N₆₀=22

D 7.70

U 8.00

D 8.50

D 8.80

S/D 9.00SPT/S 9.00 N=20

N₆₀=24

D 9.80

U 10.00

0.30

2.90

3.30

4.30

7.70

10.00

Site &Location:






Borehole type:


BH813

Prelim

inary



Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

29.74


Stiff becoming very stiff fissured dark grey silty CLAY with rare partings and pockets of silt. Rare pockets of selenite.



11

12

13

14

15

16

17

18

19

20

D 10.50

D 11.40

S/D 12.00SPT/S 12.00 N=29

N₆₀=35

D 13.50

U 14.00

D 14.50

D 15.00 15.00

Site &Location:






Borehole type:


BH813

Prelim

inary





Chiselling from 4.60m to 5.50m (1 hour)Water inflow at 4.60m:- rose to 3.20m (20 mins)- sealed at 5.50m

BH cased to 6.50m

Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

47.05

43.55

42.35

40.15

37.15


MADE GROUND: asphalt.MADE GROUND: firm to stiff orange brown silty gravelly very sandy clay. Gravel is subangular to rounded fine to coarse flint brick and concrete. Occasional rootlets.

...occasional clinker at 2.00m

Orange brown clayey very sandy GRAVEL. Gravel is subangular to subrounded flint.

Firm brown mottled orange brown slightly gravelly silty very sandy CLAY. Gravel is subangular to rounded fine to coarse flint. Locally very gravelly.

Stiff fissured dark brown mottled grey silty CLAY with occasional partings of sand.

...occasional root traces at 7.50m

...claystone at 7.70m to 7.80m



1

2

3

4

5

6

7

8

9

10

E 0.50PID 0.50 0.1

B 1.20SPT/C 1.20 N=13

N₆₀=16E 1.50PID 1.50 0.2

D 1.90B 2.00

SPT/C 2.00 N=12N₆₀=14

E 2.50PID 2.50 0.0D 2.70

B 3.00SPT/C 3.00 N=11

N₆₀=13

E 3.50PID 3.50 0.1D 3.70

B 4.00SPT/C 4.00 N=13

N₆₀=16

D 4.70

B 5.00SPT/C 5.00 N=59

N₆₀=71

D 5.70

B 6.00SPT/C 6.00 N=24

N₆₀=29

D 7.00U 7.00

D 7.50

D 7.70

S/D 8.00SPT/S 8.00 N=19

N₆₀=23

D 8.80

U 9.00

D 9.30

D 9.80

S/D 10.00

0.10

3.60

4.80

7.00

10.00

Site &Location:






Borehole type:



BH814

Prelim

inary



Samples & Tests

Type Depth(m)

FieldTest

Results

Strata

Depth(m)

Level(m)

32.15


Stiff becoming very stiff fissured dark brown/grey silty CLAY with rare pockets of selenite. Occasional partings of silty fine sand.

...occasional polished fissure surfaces below about 11.00m



11

12

13

14

15

16

17

18

19

20

SPT/S 10.00 N=25N₆₀=30

D 11.00

U 12.00

D 12.50

D 13.00

S/D 14.00SPT/S 14.00 N=29

N₆₀=35

D 15.00 15.00

Site &Location:






Borehole type:



BH814

Prelim

inary

Site & Location:





Remarks:- a) Coordinates/ground level by GPS; checked against Plowman Craven Topographical Survey (Ref: 29053T-01-Z1-1, Jul 13)b) Open-hole drilling from GL to 4.00m; rotary coring (GeoborS) from 4.00m to 61.00m (102mm dia core) - water/polymer flushc) Monitoring pipe (50mm ID) installed to 5.00m: response zone with slotted pipe from 4.00m to 1.00m

Core rundepth (m)

4.00-

5.50

5.50-

7.00

7.00-

8.50

8.50-

10.00

TCRSCRRQD

IfMinAveMax

Samples and Tests

Type

E/PID

E/PID

E/PID

E/PID

D

CS

CS

D

CS

DCS

SPT/S

CS

DCS

DSPT/S

D

CS

D

Depth(m)

0.50

1.50

2.00

3.00

4.45

5.00 - 5.20

5.25 - 5.50

5.70

6.00 - 6.30

6.506.65 - 7.00

7.00

7.20 - 7.50

7.657.80 - 8.20

8.408.50

9.50

9.70 - 10.00

10.00

Test result

0.9

0.8

0.1

1.4

N=11N60=11

N=26N60=25

N>50*

Strata

Depth(m)

0.10

0.80

1.90

4.00

5.50

6.70

10.00

Level(mOD)

47.84

47.14

46.04

43.94

42.44

41.24

37.94


MADE GROUND: asphalt.MADE GROUND: dark grey silty very clayey very gravelly sand. Gravel is subangular to rounded fine to coarse brick concrete and flint. Occasional cobbles of brick and concrete.

Brown/grey clayey sandy GRAVEL - possible made ground (Driller's description from open-hole drilling)

Brown CLAY (Driller's description from open-hole drilling)

Stiff locally firm fissured orange brown mottled grey silty CLAY with rare to occasional pockets/partings of sand. Rare to occasional pockets of selenite.




Stiff fissured dark brown locally stained orange silty CLAY with occasional pockets of sand and selenite. Rare pyrite nodules.

Stiff locally firm fissured dark grey silty CLAY with rare partings of silt.

...rare pockets of sand below about 7.60m

...claystone fragments at 9.60m to 9.70m



1

2

3

4

5

6

7

8

9

10

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Site & Location:






Core rundepth (m)

10.00-

11.50

11.50-

13.00

13.00-

14.50

14.50-

16.00

16.00-

17.50

17.50-

19.00

19.00-

20.50

TCRSCRRQD

IfMinAveMax

Samples and Tests

Type

SPT/SCS

CS

CS

CS

CS

D

DCS

SPT/S

CS

CS

CS

CS

D

CS

D

CS

D

SPT/S

CS

Depth(m)

10.0010.20 -10.50

11.00 -11.30

11.70 -12.00

12.45 -12.75

13.30 -13.60

13.70

13.9014.00 -14.30

14.50

14.90 -15.20

15.50 -15.90

16.30 -16.60

16.80 -17.10

17.40

17.70 -17.95

18.10

18.35 -18.60

18.80

19.00

19.50 -19.90

Test result

N=32N60=31

N=24N60=23

Strata

Depth(m)

13.80

15.50

20.00

Level(mOD)

34.14

32.44

27.94


Stiff fissured dark grey silty CLAY with rare partings of silt.

...pyrite nodules below 10.90m


Stiff to very stiff fissured dark grey slightly sandy silty CLAY with occasional grey/black silt/sand pockets.

Stiff to very stiff fissured dark grey silty CLAY with rare black silt/sand pockets.


...occasional pyrite nodules at 18.95m

...rare to occasional partings of silt/sand below 19.40m



11

12

13

14

15

16

17

18

19

20

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Site & Location:






Core rundepth (m)

20.50-

22.00

22.00-

23.50

23.50-

25.00

25.00-

26.50

26.50-

28.00

28.00-

29.50

TCRSCRRQD

IfMinAveMax

Samples and Tests

Type

CS

CS

CS

CS

DCS

SPT/S

CS

CS

D

CS

CS

CS

CS

SPT/S

CS

CS

CS

Depth(m)

20.20 -20.50

20.60 -20.85

21.75 -22.00

22.20 -22.40

23.0023.10 -23.30

23.50

24.15 -24.35

24.55 -24.85

25.00

25.20 -25.45

25.95 -26.30

26.95 -27.30

27.80 -28.0028.0028.20 -28.50

29.10 -29.35

29.70 -29.90

Test result

N=35N60=34

N=41N60=40

Strata

Depth(m)

22.75

28.30

30.00

Level(mOD)

25.19

19.64

17.94


Stiff fissured dark grey silty CLAY with rare pockets of silt/sand.

Very stiff fissured dark grey silty CLAY with rare pockets of silt/sand. Locally sandy.




Very stiff fissured dark grey slightly sandy silty CLAY with occasional to many partings of silt and sand.

...pyrite nodules at 28.45m



21

22

23

24

25

26

27

28

29

30

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Site & Location:






Core rundepth (m)

29.50-

31.00

31.00-

32.50

32.50-

34.00

34.00-

35.50

35.50-

37.00

37.00-

38.50

38.50-

40.00

TCRSCRRQD

IfMinAveMax

Samples and Tests

Type

CS

CS

CS

SPT/S

CS

CS

CS

CS

CS

CS

SPT/C

D

CS

CS

D

CS

Depth(m)

30.50 -30.80

31.05 -31.30

32.25 -32.5032.50

33.00 -33.30

33.80 -34.00

34.20 -34.40

34.90 -35.10

35.85 -36.25

36.75 -37.0037.00

37.60

38.10 -38.40

38.60 -38.85

39.25

39.65 -39.90

Test result

N=43N60=42

N=44N60=43

Strata

Depth(m)

30.30

34.00

35.80

38.60

40.00

Level(mOD)

17.64

13.94

12.14

9.34

7.94


Very stiff fissured green/grey silty sandy CLAY with occasional pockets/ partings of sand.Very stiff fissured dark grey slightly sandy silty CLAY with occasional to many pockets of silt and sand. Locally sandy wit occasional lignitic pockets.

...green/grey silty sandy clay between 31.50m and 31.65m

Very stiff fissured dark grey silty CLAY with rare partings of silt and sand.

...rare to occasional pyrite at 35.00m

Very stiff fissured dark grey slightly sandy silty CLAY with rare to occasional pockets and partings of sand.


...occasional to many pockets/partings of sand below 37.40m

...becoming very silty sandy below 38.40m

Very stiff friable light grey and grey mottled red silty CLAY with rare pockets of sand.



31

32

33

34

35

36

37

38

39

40

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Site & Location:






Core rundepth (m)

40.00-

41.50

41.50-

43.00

43.00-

44.50

44.50-

46.00

46.00-

47.50

47.50-

49.00

49.00-

50.50

TCRSCRRQD

IfMinAveMax

Samples and Tests

Type

CS

CS

SPT/C

CS

CS

CS

D

CS

CS

CS

DSPT/C

CS

CS

D

CS

D

D

Depth(m)

40.15 -40.35

41.00 -41.30

41.50

42.10 -42.35

42.75 -43.00

43.30 -43.60

43.80

44.00 -44.30

44.70 -44.90

45.30 -45.60

46.0046.00

46.60 -46.90

47.20 -47.50

48.00

48.70 -49.00

49.60

49.80

Test result

N=45N60=44

N>50*

Strata

Depth(m)

43.00

44.50

46.60

47.30

50.00

Level(mOD)

4.94

3.44

1.34

0.64

-2.06


Very stiff fissured light grey mottled red and yellow silty CLAY.

...becoming friable below 41.50m

Very stiff fissured light grey mottled red/orange/yellow and pale purple slightly sandy silty CLAY. Rare pockets of weak sandstone.

...becoming sandy below 43.80m

Very stiff brown mottled grey/red/yellow fissured silty CLAY.

Very stiff light grey mottled yellow/purple slightly sandy silty CLAY.

...sand lens between 47.00m and 47.15m

Very stiff fissured brown mottled grey/purple/yellow fissured silty CLAY.

...rare silt/sand pockets at 49.80m to 49.90m



41

42

43

44

45

46

47

48

49

50

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Site & Location:






Core rundepth (m)

50.50-

52.00

52.00-

53.50

53.50-

55.00

55.00-

56.50

56.50-

58.00

58.00-

59.50

TCRSCRRQD

766161

908686

IfMinAveMax

250300800

Samples and Tests

Type

SPT/C

D

D

D

D

D

CS

CS

D

SPT/C

CS

D

CS

D

CS

CS

CS

CS

SPT/C

Depth(m)

50.50

51.90

52.70

52.90

53.10

53.40

53.60 -53.90

54.10 -54.40

54.80

55.00

55.20 -55.50

55.70

55.90 -56.20

56.40

57.00 -57.30

57.60 -57.90

58.00 -58.30

59.15 -59.40

59.50

Test result

N>50*

N>50*

N>50*

Strata

Depth(m)

51.60

52.00

53.50

54.80

56.30

56.90

Level(mOD)

-3.66

-4.06

-5.56

-6.86

-8.36

-8.96


Grey slightly clayey to clayey GRAVEL with a matrix of grey/green silty clay. Gravel is rounded medium to coarse flint.

Very stiff purple brown mottled grey/yellow slightly gravelly silty CLAY. Gravel is rounded medium to coarse flint.

Dark grey slightly gravelly fine to medium SAND. Gravel is rounded medium flint.

...becoming clayey below 53.20m

Dark grey fine to medium SAND.

Very stiff dark grey mottled light grey silty very sandy CLAY, locally friable.

Dark grey slightly sandy clayey GRAVEL. Gravel is subangular to subrounded fine to coarse flint. Clay matrix with occasional silt and sand.

...assumed zone of core loss

Weak low to medium density off white CHALK. Fractures are closed to widely spaced horizontal to subhorizontal clean. Rare to occasional flints.

...highly fractured zone between 57.90m to 58.00m

...highly fractured zone between 58.55m to 58.60m



51

52

53

54

55

56

57

58

59

60

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Site & Location:






Core rundepth (m)

59.50-

61.00

TCRSCRRQD

703333

IfMinAveMax

NI170200

Samples and Tests

Type

CS

Depth(m)

60.75 -61.00

Test result

Strata

Depth(m)

61.00

Level(mOD)

-13.06


...non-intact/ heavily fractured zone between 60.20m to 60.50m

...non-intact/ heavily fractured zone between 60.70m to 60.80m (associated flint)

End of borehole at 61.00 m


61

62

63

64

65

66

67

68

69

70

Hole Depth(m)

Diameter (mm)

Casing Depth (m)

Casing (mm)


Sealed (m)

Progress

Date Time Depth(m)

Casing(m)

Water(m)

Prelim

inary

Brent Cross Cricklewood Regeneration Area

Appendices Phase 1B North Site-specific Scheme of Archaeological Investigation

waterman numbered report template - brentcrosslondon · test result 1.8 0.1 n=9 n60=9 n=8 n60=8...

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