A

Factual Report

of

Site Investigation undertaken for

Martin Beaumanoir

at

7 Green View The Green

Theydon Bois

on

16th January 2009

Chelmer Sile Investigations, ~ / Un~ 15, EM! H.1ntl(\gte&d trdlJSb\a Utal., ()d Ouch Road.' "\ ,,!

En' HOMhlfiold. Essol CIlJ 8A8 _.r -. Ttlopnol\f: 011<5 400930 fIX 011<5 ~33 / ..

Email: Inlo@sitelnYesU9aUons.co.ukWebslto: .......... it.lnvuUgaijon•.co.uk . '

--

Chelmer Site Investigations Unil 15 East Hannlngfield Industrial Estate

Old Church Road, East HannlngOeld, Essex CM3 8AS Telephone; 01245400930 Fax: 01245 400933

Email: Info@sltelnvestigatlons.co.uk Website: www.sltelnvestlgatlons.co.uk

ClieDI: Martin Beaumanoir Scale: N,T.S. Sheet No: I of I Date: 16.1.09

Location: 7 Green View, The Green Theydon Bois

Job No: 1480 Weather: Overcast Drawn by: JG IChecked by: ME

THE GREEN

~-----I------------------I--­

SLABBED FRONT

I f-Im-$-310----1

BHI

I NO.7 (TWO STOREY)

I SLABBED SlDEWAY

I DECKING

I I

I (SINGLE STOREy) EXTENSION

(

I

I

I

I 710

REAR LAWN

I I

BH2

I 2.510

~ __t _ ____I ­

I 1

I I

I I

I I

I I

I I

I I

I I

___ l_ Key:Notes:

On site tree identification/or @]g/lidance only. Nol a/llhenticated. 0 ~ 0 • • EJ RllaW.tt,.I

TrcrfSonJb HortbG!e Trial rl1 Cuny frn'Stump SoU Pipe r\f1D'601e

I

Chermer Site Investigations, ~ : t'./ Unit 1 S, Ese! Hannlngflald Induetrlal Ealale, Old Church ROEld'lr£f, '~~'.

East Hannlngneld, EO:3ax CM3 BAS >iV~~~,Tolophono: 012415 400930 Fax.: 01245400933 .,' . ~ /"'",

Email: Info@sltelnvestlgatlons.co.uk Wobslte: \IV\IVW'.sltolnvostlgatJons.co.uk ~ 'H ,;'~ Client: Martin Beamanoir Scale: NTS, Sheet No: I of I Date: 16,1.09

Site: 7 Green View, The Green, Theydon Bois Job No: 1480 Oorehole No: I Boring Method: C.FA

Weather: Overcast Drawn by: JG Approved by: MCE

Description or Strata

.. C. 8 os

(JJ

Test

Type Result

Root lnrormatlon

SLABS OVER SANDG.L.

0,10 ~---------------I--­TYPE I ROADSTONE

0.20 ~__--::--:,-,,-__--,­ -MADE GROUND: medium compact dark

0.10

0,10 -I---l

+-__ Hair and fibrous roots to 1,2m

brown/grey silty clay with gravel and brick

0,60 l-....::.fr.:::Jag;,:rm::,:e:.:.n::,:ts:;..------------l­

0040

---f

D

~-x­

0,50

Firm mid brown/orange grey veined silty CLAY wilh partings or orange and brown silt and fine sand claystone nodules and

1--_ D

1--­1.00 1._

fA.-­

V 68 72

No roots observed below 1,2m

1.00

crystals,

1.60 I---------------+---f::::­

1--_ D

...::~=l

1.50

--­

V 94 100

2.00

Stiff as above. 1.80 _-J D

--­_ _x_

2.50

3040 1­ -I

_-_ D

L...-J

-__-fL...=-_-==j-

V 122 132

3,00

cX.-_ D

1--­

3.50

Very stiff mid brown silty CLAY with 1--­

V 140+ 140+

4,00

partings of orange and brown silt and fine sand claystone nodules and crystals, ~-­

~-J

3,10 ~-_ D 4,50

~-_ D

1--­

lL-­~-­

140+ 140+

V 5,00

6,50 1­ -

~-J D

~-­

+__---i~=--x_'_=1­

140+ 140+

v 6.00

~-­

~-­

v 140+ 140+

7.00

Very stitT mid grey silly CLAY with partings or brown silt and fine sand and crystals,

D3,50 1--­

1--­

V 140+ 140+

8.00

~-­1--_ D

1--­

~-­

v 140+ 140+

9.00

10,00 I------------,--,--:-------j----f~=--.Borehole ends at 10,Om

..::-::::::t D v 140+ 140+

10,00

J Jar Sample V Pilcon Vane (kPa)

iYl Mackintosh Probe Standard Penetration Test Blow Count

Key: T,DTD, Too Dense to Drive D Small Disturbed Samrle B Bulk Disturbed Sample U Undisturbed Sample(U I00) W Water Salllillc N

Remarks: Borehole dry and open on completion,

Chelrner Site Investigations, Unit 15, East l'I~;,("'\n(naf'Ftld Indllstrlal Estl3ll&. Old Church Road,

EElst Harlnlngnold. Essex CM3 8AB

Te(ophone: 01245400930 Fax: 01245400933

Email; lnfo@slte nvest gut ons.co.uk Websrte: \iV"1NVV.sltefnvest:lgatton~.co.uk

Client: Manin Beamanoir Scale: N.T.S. Sheet No: I of I Date: 16.1.09

Site: 7 Green View, The Green, Theydon Bois Job No: 1480 Borehole No: 2 Boring Method: C.FA

Weather: Overcast Drawn by: JG Approved by: MCE

TestDescription of Strata Root Information

Type Result

Turf over TOPSOIL G.L. 0.10

O. 10 f--:-:--::-=-=-::-:'~c::--::-:-----~--t--­Hair and fibrous roots to 1.2mMADE GROUND: medium compact dark 11

brown/grey silty clay with gravel brick and 0.60

0.70 I---.:c:..:.hi:...;n.:;.a:..:.fr:..:.a.<L.:gm:..:.'en:..:.t.:;.s. -!­__-f:lC£>"""~

,.....-x_ D 0.50

-- ­-- ­.Jl-_ D V 68 1.00

Finn mid brown/orange grey veined silty -- ­ 66 CLAY with panings of orange and brown 1.60 _-J. No roots observed below 1.2m

silt and fine sand claystone nodules and _-_ D 1.50

crystals. f---­

~-­

f---­ D V 74 2.00

~J 74

2.30 f-------------------!----jl-=--.::-:::::=j f---x_ D

f---­

f---J

f---­ D Stiff as above. 1.40 ~-_

f---­

f---­ D

~-­

].70 1------------------+---1=---'=1 f---­ D f---­

~-­

Very stiff mid brown/orange silty CLAY 1--­

with panings of orange and brown silt and 1.80 f--- J. D fine sand claystone nodules and crystals. f---­

1--­

fL-­ D f---­

5.50 I-----------------f----FI-=--~·J:::::=j f---­

Very stirT mid to dark brown silty CLAY f---x_ D

with partings of orange and brown silt and 1.20 f---­

fine sand claystone nodules and crystals. I--J.

6.70 I-----------------+---fl-..;.e----j ­fL-­ D f---­

1--­

Very stiff mid grey silty CLAY with fL-­ D panings of brown silty and fine sand 3.30 ,.....-_

and crystals. f---­

f---­ D

~-­

1--­

DI0.00 I-- -=-----,----,----------:-~:_::_::----_+---F=--=..x=j Borehole ends at 10.Om

Rcml1rks: Borehole clry and open on completion. Key:

V 116 120

V 140+ 140+

V 140+ 140+

V 140+ 140+

V

V

V

V

140+ 140+

140+ 140+

140+ 140+

140+ 140+

T.D.T.D. Too Dense to Drive D Smull Disturbed Sample

2.50

3.00

3.50

4.00

4.50

5.00

6.00

7.00

8.00

9.00

10.00

J Jar Sample B Bulk Disturbed Sample V Pilcon Vane (kPa) U Undisturbed Sample(UlOO) tvl Mackintosh Probe W Water Sample N Standard Penetration Test Blow Counl

Chelmer Geotechnical Laboratories Unit 15 East Hanningfield Industrial Estate Old Church Road East Hanningfield Essex CM3 8AB Tel: 01245 401393 Fax: 01245 400933 Email: info@soillabs.co.uk

Laboratory Testing Results Job No: CGLOI106 Received: 16.01.09 Client: Martin Beaumanoir CSI Ref: 1480 Tested: 20.01.09 Site: 7 Green View The Green Theydon Bois Complete: 22.01.09

Sam pic Ke

Type Moisture <Antent

Soil Fraction

Liquid J.jrnit

Plastic J.jmit

Plasticity Index

Liquidity Index

Modified Plasticity

Soil Class

Filter Paper Contaa

Soil Sample

In situ Shear Vane

Organic Content

pH Value

Sulphate COnl<:nl (gil ) Class

[14)

Bll Deplh

I Sample No (m) (%) [))

> 0.425mm (%) [2) (% )[3) (%) [4} (%) [5) [5)

Inde>;

(%) [6 [7) Time (h) [8)

Suction

(kPa)

Strength (kPa) [9J (% )[)O) [) ))

5°3

[12) 5°4

[13)

1/006164 1.0 D 35 <5 81 27 54 0.15 54 CV 70

1/006165 2.0 D 32 <5 77 26 51 0.11 51 CV 97

1/006166 3.0 D 33 <5 80 30 50 0.06 50 CV 137

1/006167 4.0 D 33 <5 81 29 52 0.06 52 CV > 140

Tesl Methods I Notes Il} as 13D: PM12~ 1990, T~ No 3.1

PJ E$tima1cd if <5'Y~ od><owisc mca=o:l

IJ} as 1377: P.,,2: 1990. T= No'"

1<) as 1377: Pm 2: L990, T= No 5.> 15) as 1377 : Pm 2: 1990. T= No 5A /6) BRE Digest 240 : 1993

[7) BS5930: 1'lSl : F--. 3L • Pla5ndryOlanfOT""'~

of fine iOi.ls 18) 1l>-ho.... 1DClhod 59a odop<cd li1>m BRE IP 4J93

(9) \'AJ.u:cs ofshcar~"1il W'ere de:tc:rmiDcd in sinl by Oc::bna S.ilC lo~ns U$in~

• Pik:oo J:raod YanC Of Goonoc vaoc: (G¥). 110) BS 1377: Pm3: 1990, T", No'

[II} as 1377 :""'2; 1990, TCSlNo9 1/1) as 1377: Port 3: 1990, T", No5.6 113) SO•• 1.2> so, 114) BRE 5po:W I>Ca' Doe (C=cr= iD ~ Gro..-.!) 2005

No&c thAr irlbc SO~ 0'J0Qtc:nI. &.Ils im£llbc DS-4 Of DS-S claD. it W'Ould beprudcnll.O coasida: the sampk~ &.I1in& i:rm the OS-Cm or Os..Sm cau rcspcctivdy l.lI\k:$:s ~cr ~luble~~ is UDd~ to pr'OVC ~

.!ill o Distutt'lCd~plc:

B Bulk ""'Pk U UIOO (unWmsl>cd _pic) W W~Sl.mpk

ENP £sscQlidty Noo-Pl&stK by ~OD

UIS lIndctsidc Fou..rm.rion

Chelmer Geotechnical Laboratories Unit 15 East Hanningfield Industrial Estate Old Church Road East Hannillgfield Essex CM3 8AB Tel: 01245401393 Fax: 01245400933 Email: info@soillabs.co.uk

Laboratory Testing Results Job No: CGLOJ 106 Received: 16.01.09 Client: Martin Beaumanoir CSJ Ref: 1480 Tested: 20.01.09 Site: 7 Green View The Green Theydon Bois Complete: 22.01.09

Sample Ref.

Type

Moisture

Content

Soil

Fraction

Uquid

Umit

Plastic

!..imjt

Plasticity

Index Uquidity

Index

Modified

Plasticity

Soil

Class

Filter Paper

Contact

Soil

Sample

In situ

Shear Vane

Organic

Content

pH

Value

Sulphate Content

(g / I l Class

[U)

BH Depth

I Sample No (m)

(%) [J} > O.425mrn

(%) [2) (% l [3) (%) [4 (%) [5) [5) Index

('!ol [6 [7) Time (b l [8)

Suction

(kPa) Strength (kPal [9) (% l[JO) [ll)

S03 [J2)

5°4

[J3)

2/006168 1.0 D 40 11 86 28 58 0.20 52 CV 67

2/006169 2.0 D 31 <5 72 27 45 0.10 45 CV 74

2/006170 3.0 D 32 <5 75 28 47 0.09 47 CV 118

2/006171 4.0 D 31 <5 76 27 49 0.09 49 CV > 140

est Methods NOles /9J V.lues of sbc>r sm:ngth .'ere dclaUlincd ;" silU by C1>clrna Site lnv~ ..-inj; Key[I} as 1377, P",2, 1990. T<Sl No 3..2 .. Pikon t'wK5 V&QC or Gamor YtII1C (G¥). o Dbzurbcd sample[2J EsciJnal.«j if<S%, o~m<=UCd [10} as 1)77, P>n 3,1990, T<Sl No' B BWksamplc[JJ BS 1377, Pan 2, 1990. T<Sl No 4.4 [II] as 1377,Pan2, 1990.T<SlNo9

U U!OO(~umplc)[<J as 1377 ,P", 2 , 1990. T<Sl No 53 [IlJ BS U77, Pan 3, 1990. T<Sl NoS.6 W WIla:»mplc [S] as 1377 ,Pan 2 , 1990. T<Sl No 5.4 [iJJ SO, - 1.2 x so, SNP E=W!y Noo-PIastic: by "spcction[6] ORE 0 ...... 2<0, I99J [I<] ORE SpocW O'g<Sl Ooc (C=a= in ~c Gmund) 2005 UIS Und~ Foundation [7] 8559)0, 19HI ,FigureJl.PWticiIya..nford>e~fiwion NOle dw iflb.:. SO" COnJ,c::%l falls imo the D$-4 or D~ cW:s., il would be pn.IdcnIlo consider the Rmplc <IS f.aJ1iog

of fine .iOiJs iDLo tht: DS-4ru or DS-Sm clas:<i rc:spec:rivcJy L.mkss waJ.a solub\.e r:nagnc:s:ium ~ is undcnah:n lo prove othc::rwise [N] ID-hou>c method 5'1. ~ from ORE IP ~I9J

Chelmer Geotechnical Laboratories Unit 15 East Hanningfield Industrial Estate Old Church Road East Hanningfield Essex CM3 8AB Tel: 01245 401393 Fax: 01245400933 Email: info@Soillabs.co.uk

Moisture Content and Shear Strength Profiles Job No: CGLOII06

Client: Manin Beaumanoir CSI Ref: 1480 Received: 16.01.09 Site: 7 Green View The Green Theydon Bois Note: Unless specifically noted the profiles have not been Tested: 20.01.09

related to a site datum. Complete: 22.01.09

Moisture Content Profile(s) Shear Strength Profile (s) Soil Moisture Content C%)

In Situ Shear Strength (kPa) 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 o 20 40 60 80 100 120 14D 1600.0 I I I I I I I I

0.0 t'l------~----'-------"---~---'------'---____.,

0.5 0.5

:BH1 6M2 ~H2 BH11.0 . .... , : .1.0

'.......•..............1.5 ............. __ .1.5

. . . ~.-., - .....-.. -' --. ._. -- _.. _....2.0 2.0· .. -- - ..

.... - .;.. -- ; .2.5 ,- .: .. . ---­~2.5g S .......... .: ;. .; .. - . -= 3.0 ..c 3.0

0­ 0.0) 0)

~ - _. • .. " .... _. i - ... - ~-,' .o 3.5 r···· .. . . .. .. .. .. - - -. . .. _.. .. . . .. . _.. . - .~0 3.5

4.0 i .. · .. · .. ·· .. ·;.. · ""'----i" ...•. :... - - . -~. -. - .: .........• - - . f' .4.0

, .4.5·' ........ .................... - _ .4.5

... _ _ - -~ -- - _.. -"'. - .~ ~ 5.01 · .. · .. ; -- ..5.0

.•..••••..... j. ; . \ .5.55.5

6.0 .LI _ 6.0 I I

~~

1. If the Soil fraction> 0.425mm exceeds 5% the Equivalent tv10iswre Content of Unless otherwise st:lted, values of Shear Strength were detennined in situ

the remainder (calculated in acrordance with as 1377: Part 2: 1990. c1.3.1.4 note 1 ) is also by Chelmer Site Investigations using a Pilcon Hand Vane the calibration of which is limited to

ploned and the altemati"e profile additionaUy shown as an appropriately coloured broken line. a maximum reading of 140 k.Pa.

2. Ifplorred, 0.4 LL and PL+2 ( after Driscoll, 1983 ) should only be applied to London Clay

( and similarly overronsolidated clays) at shallow depths.

Chelmer Geotechnical Laboratories Unit IS East Hanningfield Industrial Estate Old Church Road East Hanningfield Essex CM3 8AB Tel: 01245 401393 Fax: 01245 400933 Email: info@Soillabs.co.uk

Job No: CGLOIl06 Received: 16.01.09 Client: Martin Beaumanoir CSI Ref: 1480 Tested: 20.01.09 Site: 7 Green View The Green Theydon Bois Complete: 22.01.09

80

70)

60)

-::- SO

" u " t 5

>< ~ 40 c

;:;. :~ t; <>

a.. 30

20

Key

U Upper Plasticity Range

L 1 H V E Low Intennediate High Very High Extremely High Plasticity

@/V /'

e X

V ,/

CH X

X X

X

~ x

G X

/ AA-Line

/ /'

CL )

~

/ 8/')

///

/'/' 8-------

6) 8 .. .. o

BH 1 X

10I BH2 x

o 10 20 30 40 so 60 70 80 90 100 110 l20

Liquid Limit (per ceot)

Plasticity Chart for the classification of fine soils and the finer part of coarse soils. SILT eM-SOIL), M, plots below A-Line } CLAY, C, plots above A-Line M and C may be combined as FINE SOIL, F.

In Compliance with BS 5930: 1981

CheJmer Site Inva.llgatlons, Unit 15, fa'l Hlntllngf'iekj Ir.dUltrl. f'l.IIl_, a.d ChlUd't Roed.

EUI H~f\t'll:r>Qh40Id. ill". au 8AS

r.l.phon_: 0114' 4-00910 "e: OU., 4OW3J

EmaIl: Inl~.11qln..... IJ.iil.lIon•.(;o.uIlW.boIlle;WVtIW.IU.ln.....UgeUo.... (;Q.uk

REPORT NOTES

Equipment Used

Hand tools, Mechanical Concrete Breaker and Spade, Hand Augers, IOOmmll50mm diameter Mechanical Flight Auger Rig, GE0205 Flight Auger Rig, Window Sampling Rig, and Large or Limited Access Shell & Auger Rig upon request and/or access permitting.

On Site Tests

By Pilcon Shear-Vane Tester (Kn/m2) in clay soils, and/or Mackintosh Probe in

granular soils or made ground and/or upon request Continuous Dynamic Probe Testing and Standard Penetration Testing.

Note:

Details reported in trial-pits and boreholes relate to positions investigated only as instructed by the client or engineer on the date shown.

We are therefore unable to accept any responsibility for changes in soil conditions not investigated i.e. variations due to climate, season, vegetation and varying ground water levels.

Full terms and conditions are available upon request.

7 Green View, The Green, Theydon Bois, Essex

Surface Water

Calculation of surface water drained area based on the reqUirements of BUilding Regulations Approved Document Hand BS EN 752.

The eXisting property currently drains via gutters and rainwater pipes to an eXisting below ground system, and benefits from both a front and rear garden.

The proposed extensions are below ground in the form of a basement, and above ground to the side I rear.

The basement structure will be formed by a contiguous piled wall, and does not have any adverse effects on the area preViously drained due to the nature of the sub-soil (made ground over clay) other than perched water. The footprint of this has therefore been excluded from the area of consideration.

The perched water table is located approximately 500mm below the surface will be retained by the installation of land drains to prevent a flowpath, and protect the below ground structure, by maintaining the current scenario.

The additional roof area of the extension is mainly formed over the existing hard paved area (or decking over hard paVing) and has been evaluated at 75mm/h proposed instead of 50mm/h existing.

Existing impermeable area

= 50.75m2 roof area @75mm/h + 78.65m2 hard paved area @ 50mm/h

= 1.06 lis + 1.10 lis

= 2.16 lis

Proposed impermeable area

= 92.40m2 roof area @75mm/h + 34.30m2 hard paved area @ 50mmjh

= 1.94 I/s + 0.48 lis

= 2.42 lis

The increase is therefore negligible at 0.26 lis.

..\ \

Dimension taken from internal face of existing fence post

~--­-~

-~./-~ ~_.­

---­---,,""

KEY

D Extent of Forest Land

Agreed boundary line

Ora ..." I DabR....

\ifCITY

l.ON'DON

P.G.Bennea, MA (Cantab) FRICS City Surveyor

CITY SURVEYOR'S DEPARTMENT Corpararc Propt:rtr' Group

C2n;:)gr:'I'hlc Pl3m &. Resc7CO Sec.aGO

~,

7 Green View, Theydon Bois,

Essex, CM16 7JD

TItt. ,

Agreed boundary between above property and Epping

Forest.

Prlrrt ocol. , A4@ 1: I 1Dr-..." by , JEe

110'" ,

Dr-o.*'g No I

l-C-30536 -01

Ilo-lslon

........~~ ...-.......-..~~...,.,.. Scale 1:500 ~om-t:lo.-o.".ta!IL t-...... Wlter,a-.."..... .. ~~.,................~~~t.GIl:Ilm:k3:2mT.