Drainage Survey Report - Scarlett

1

20-005 Davidsons Mains

Proposed New Residential Development

Davidsons Mains, Edinburgh

Drainage Survey, Siteworks

20th March 2020 Revised 24th March 2020 REV A

2


PARTICULARS

Project

On the

Former

Water

Treatment

Works,

Fairmilehe

ad

Davidsons Mains Job Ref. S20-005

Planning Number TBC

Client Santon Group Development Ltd

Address Land at 43 Main Street, to the west of 45 & 45A Main Street, to the

rear of 45a MainStreet, and the rear of Tesco Metro at 36 Crammond

Road South.

Postcode EH4 6AA

Local Authority The City of Edinburgh Council

National Grid Reference 320626, 675555

Current Site Owner Santon Group Development Ltd

Area (ha) 0.448

Date of site visit 17/01/2020 13/03/2020 13/03/2020

Report type

Drainage Survey

Purpose of report Planning

Scope Site Appraisal

Report status FINAL Revision A 24/03/20

Date of Report 18/03/2020

Prepared by Charles Mintowt-Czyz

Signed

Date 20/03/2020 24/03/20 (A)

Approved by Russell Blackhall

Signed Date 20/03/2020 24/03/20 (A)

On behalf of ENV Consulting Engineers

Registered Office: 1 Rowan Court, Cavalry Park,

Peebles EH45 9BU

t: 01721 540 606 e: [email protected]

VAT Registration Number 262 6164 09

Company Number SC542738

mailto:[email protected]

3


CONTENTS

1 EXECUTIVE SUMMARY ............................................................................................... 5

2 INTRODUCTION ........................................................................................................... 6

2.1 Brief ........................................................................................................................ 6

2.2 Report Objectives ................................................................................................... 6

2.3 Previous Reports .................................................................................................... 6

2.4 Sources of Information ............................................................................................ 6

3 SITE CONTEXT ............................................................................................................ 7

3.1 Site Description ....................................................................................................... 7

4 DRAINAGE RECORDS ................................................................................................ 8

4.1 Scottish Water Records .......................................................................................... 8

4.2 City of Edinburgh Council Records ......................................................................... 8

5 Site Works.................................................................................................................... 9

5.1 Site Walkover .......................................................................................................... 9

5.2 Manhole Survey .................................................................................................... 10

6 CONCLUSIONS AND FURTHER WORK ................................................................... 15

6.1 Conclusions .......................................................................................................... 15

6.2 Further Work ......................................................................................................... 15

7 REFERENCES ............................................................................................................ 16

4


Appendices

Appendix A Site Location Plan

Site Boundary Plan

Appendix B Proposed Development Layout

Appendix C Historic Records

Scottish Water Records

CEC Records

Appendix D CCTV Report

Appendix E Study Limitations

5


1 EXECUTIVE SUMMARY

The ENV Consulting Engineers (ENV) has been commissioned by Santon Group

Developments Ltd to provide a Drainage Assessment on the site at the site at Davidsons

Mains, Edinburgh. The site-specific address is the land at 43 Main Street, to the west of 45

and 45A Main Street, to the rear of 45a MainStreet, and the rear of Tesco Metro at 36 Cramond

Road South. The site covers some 0.448ha.

The report is in relation to proposed residential development consisting of three blocks of flats

and a cottage with associated infrastructure and car parking.

This document acts as factual information on the findings of site survey works and aims to

collect and review available records. This document also aims to comment or otherwise on

the possible accuracy. It is the basis for background information to support the detailed design

and appraisal report which is presented under separate cover.

Records indicate that two sewers are located across the site, a 750mm concrete culvert for

stormwater and a 300mm cast iron foul water line. Both start roughly south-west of the site

near the roundabout connect Cramond Road and Main Street. The lines enter the site from

the west boundary, turn and exit out of the site’s northern boundary before crossing the old

railway line and into the Silverknowes residential area.

A CCTV survey was attempted to check historic records and coordinated services in line with

the topographical survey. This proved to be relatively unsuccessful given the unknown

features that could not be located at ground surface. However, the CCTV did confirm the

presence and condition of the noted foul and surface lines.

In trying to correlate the on-site information and existing records this has identified some

discrepancies that will require further work to confirm.

For the purposes of the PPP and initial appraisal the published information is recommended

for use until such times as the coordination can be completed.

The Executive Summary contains an overview of key findings and conclusions. However, no

reliance should be placed on the Executive Summary until the whole of the report has been

read. Other sections of the report may contain information which put into context the findings

noted within the Executive Summary.

6


2 INTRODUCTION

2.1 Brief

The ENV Consulting Engineers (ENV) have been commissioned by Santon Group

Developments Ltd to produce Drainage Assessment. Santon Group Developments Ltd

propose to develop the site as a residential development comprising of three blocks of

flats, a cottage flat design and associate infrastructure. The report is required to assist

with the drainage design and provide base information for the overall Drainage strategy

report, under separate cover.

A site development plan is included in Appendix B, Notably Architects drawing S4715-

PL-002.

2.2 Report Objectives

The objectives of this report are to:

• Review available information and determine their accuracy with comparison of

onsite findings.

• Produce an updated existing drainage drawing.

• Provide recommendations for further works if necessary.

2.3 Previous Reports

The following reports have been provided to ENV by the client.

• No previous reports provided

2.4 Sources of Information

The following sources of information were used during the preparation of this report. A

full reference list is included in section 7.

• City of Edinburgh Council Records

• Scottish Water Records

• CCTV Survey by Lanes Group

• Historic Mapping

A walkover was undertaken by ENV on 17/01/2020. The site walkover was carried out

to survey existing visible manholes and pipes. Two other visits were undertaken to open

manholes and dip invert levels, these are discussed later in the report.

7


3 SITE CONTEXT

3.1 Site Description

3.1.1 Site Location

The site comprises of land at 43 Main Street, to the west of 45 & 45A Main Street, to the

rear of 45a Main Street, and the rear of Tesco Metro at 36 Crammond Road South in

the Davidson Mains Area of Edinburgh. A site location plan is included in Appendix A.

3.1.2 Site Features

Historically the site has been used as a car repair garage, a public house and more

recently an existing section of the Tesco Metro’s car park.

The site is bound to the north by open space, which is a disused railway line linking

Cramond Road South to Silverknowes with existing residential dwelling further beyond

it. To the east exists a mix of uses including residential homes and a public house with

other facilities beyond. On the site’s southern boundary exists Main Street with a mix of

residential and commercial units. To the west, the site is bound by a derelict building

and associated car parking which was previously the Clydesdale Bank, with residential

homes and a public house beyond.

3.1.3 Services

Surface water and foul water drainage will be the focus. Other services have not been

considered as part of this report.

3.1.4 Proposed Development.

The proposals for the site comprise flatted residential properties, circa 36 nos. A site

plan is shown in Appendix B.

8


4 DRAINAGE RECORDS

4.1 Scottish Water Records

Scottish Water Records indicate two distinct lines running through the site. The Scottish

Water record can be seen in Appendix C.

4.1.1 750mm Culvert

Records indicate a 750mm surface water culvert starts behind the bank (currently a

Costa Coffee and outwith the site) and runs from south-west. It then enters through the

middle of the site, deviates north and exits through the site’s northern boundary. The

records indicate this follows the wall of the existing Tesco Metro’s car park.

4.1.2 300mm Foul Water Line

The second line – a 300mm diameter pipe running from the south-west cutting across

the site into the garden of an existing residential dwelling before turning north and cutting

through the site again. No manholes are recorded as being within the site boundary –

however, two are noted as being just outside the boundary.

4.2 City of Edinburgh Council Records

The City of Edinburgh Council municipal records reviewed, dated the late 1930s to the

late 1950s, feature the 300mm server line. The City of Edinburgh municipal records can

be found in Appendix C.

4.2.1 750mm Culvert

The 750mm culvert is not found on the municipal records review. However, record for

the past construction of the store note surface water discharging into a nearby

watercourse.


The 300mm foul line is seen entering the back-garden area of residential homes on ‘The

Green’. One manhole is recorded within the garden area. The line continues north

across the site area, across the old railway and joins onto a manhole just off

Silverknowes Terrace.

9


5 Site Works

To assess site conditions a CCTV survey was commissioned with the intention to tie in

with a walkover and intrusive survey. The aim was to link published data with CCTV and

actual positioning per the topographical survey.

5.1 Site Inspection

An ENV Engineer completed an initial site walkover on Friday 17th January 2020. After

a lengthy review, a CCTV survey was undertaken during late February to early March

2020 in conjunction with another intrusive survey.

Appendix C contains the condition report and the mark up drawing on the Scottish Water

records.

5.1.1 650mm/750mm Culvert

Two of a recorded five manholes were located with only one of these being located

within the site boundary. MH1A to MH3 were noted on the drainage overview drawing,

albeit MH1, MH3 and MH6 could not be physically located. These were suspected of

being developed over with soft landscaping. See Appendix C for the drainage overview

drawing.

It was recorded the pipe section changed along the line. MH1A to 2, the section was

650 concrete pipe and from MH2 downstream the section was a 750mm rectangular

concrete section.

Condition was noted as reasonable.

5.1.2 300mm Foul Water MH1A

Records show three manholes along the section of sewer. As the line enters and then

exits the site before entering and exiting again. None of the manholes are within the site

area. MH4 and MH5 could not be located but MH6 on Silverknowes Terrace was located.

In addition to this, an unrecorded manhole was found just outside the site’s southwestern

boundary. The pipe was 300mm in diameter and located on the recorded foul water lines

route.

Condition was noted as reasonable.

10


5.2 Manhole Examination

During the manhole survey, an ENV engineer attempted to open and measure the invert

level of each position. Some of the manholes either couldn’t be located or open due to

damage.

5.2.1 Manhole 1

Manhole 1 was not recorded on any of the records but was visually located during a

CCTV survey undertaken by others. Situated just outside the site boundary within the

car park area of Tesco Metro.

The manhole could not be located on the surface and is suspected of being below an

existing soft landscaped area. Attempts to unearth it were made but were unproductive.

11


5.2.2 Manhole 1A

Manhole 1A was indicated on the Scottish Water recorded as being the start of the

750mm diameter culvert location behind a bank (currently a Costa Coffee) just off

Cramond Road. The manhole was located as per the records.

The 750mm culvert was located below the manhole with an invert level of 2.45m from

ground level. The flow of water was also confirmed to be roughly south-west to north-

east.

12


5.2.3 Manhole 2

Manhole 2 is suggested within the centre of the development site area and possibly to be

the most northernly manhole of the group of three. This is currently part of the Tesco

Metro’s car park. CCTV survey works carried out by others indicated the invert level of

this being 2.80m below existing ground level. ENV was unable to open the manhole to

confirm independently. This was likely due to damage to the manhole from repeat vehicle

traffic.

Caution is noted in respect of these comments as this could be an interceptor feature

which could not be confirmed.

13


5.2.4 Manhole 3

Manhole 3 is recorded as being located north of the site in between the old railway track

and the fence line of the existing residential dwelling. An ENV engineer managed to

secure access through the residential home but could not locate the manhole due to

heavily overgrown and wooden area. Clearance works would be required to locate the

manhole.

5.2.5 Manhole 4

Manhole 4 is recorded as being located within the back-garden area of a residential home

of “The Green” just outside the site area. It is part of the 300mm diameter foul line. Access

to the back garden was secure by an ENV engineer but the manhole could not be located.

5.2.6 Manhole 4A

There was no record of manhole 4A, however, it was noticed during the initial site

walkover. Located at the back car-parking area of the old Clydesdale bank off Main Street,

it is located on top of the 300mm foul line’s route. The manhole was lifted and a 300mm

pipe located. The invert level was recorded as being 1.80m from existing ground level.

However, the orientation of the pipe was a south-west to north-east direction and may

indicate that this is an offshoot pipe connecting the bank to the foul line. Water within the

pipe indicated a south-east to north-west flow.

14


5.2.7 Manhole 5

Manhole 5 is recorded as being located adjacent to manhole 3 with the overgrown area

north of the site. The manhole could not be located.

5.2.8 Manhole 6

Manhole 6 was located at the east end of Silverknowes Terrace with a soft landscape

area that joins to Silverknowes Drive. The cover confirms that it was a foul water line but

could not be opened by the ENV Engineer.

15


6 CONCLUSIONS AND FURTHER WORK

6.1 Conclusions

Records indicate that two sewers are located across the site, a 750mm culvert for stormwater

and a 300mm foul water line. Both start roughly south-west of the site near the roundabout

connecting Cramond Road and Main Street. The lines enter the site from the west boundary,

turn and exit out of the site’s northern boundary before crossing the old railway line and into

the Silverknowes residential area.

Private drainage systems are also known to some degree to exist within the site. However,

these are mainly considered local to the carpark area.

6.1.1 650/750mm Culvert

Two manholes were located and inspected where possible. Two further manholes could not

be located but are believed to exist below soft landscaping and an overgrown area. It is

possible that manhole 1 used to exist but was developed over. This would explain its absence

from the Scottish Water records. The route of the line is believed to be in line with the Scottish

Water records, flowing from south-west to north east.


Only one of the recorded manholes could be located, MH6. This was confirmed to be in the

correct location. MH4 could not be located and an unrecorded MH4A was located behind the

old Clydesdale bank. This could be a newer manhole that was built after the Scottish Water

records were last updated or perhaps more likely, an offshoot from the bank to the foul water

line.

6.2 Further Work

The findings of the site work have not conclusively proved the location of the existing lines and

are to some degree in contradiction with available records. Further works will be needed to

accurately conclude this exercise. These will take the form of isotope and more extensive

CCTV surveys as well as surface tracking. This should be undertaken to confirm the routes of

both pipes.

Considering the development layout, the existing sewer lines are seen to clash with proposed

structures. These will need diversions designs.

All the manholes noted on the topographic survey should be opened and examined via CCTV.

16


7 REFERENCES

1. Scottish Water Sewer Records

2. City of Edinburgh Council Municipal Records

3. CCTV Report Lanes March 2020

4. National Library of Scotland

17


Appendix A

Site Location Plan

Site Boundary Plan

General Plan

Site Plan

Loc 01

A4

/NRC -- -- s/4715

Site Location Plan

March 20

1:1250

DRIVE

SILVERKNOWES

SILVERKNOWES TERRACE

THE GREEN

MAIN STREET

CORBIEHILL PLACE

CORBIEHILL CRESCENT

MAIN

ST

RE

ET

TH

E

GR

EE

N

QUALITY STREET LANE

CR

AM

ON

D

RO

AD S

OUT

H

EAST BARNTON GARDENS

QU

ALIT

Y

ST

RE

ET

MAIN STREET

CLIENT

JOB

DRAWING

Drawn JOB NO REVDR NODATEChecked Approved

SCALE SHEET SIZE

STATUS

[email protected]

Fax 0131 346 1189

Tel 0131 346 1145

Edinburgh EHI2 6AH

64 Coltbridge Avenue

Waterside Studios

EDINBURGH:-

yeomanmcallister0 50 100

accepts no responsibility for any inaccuracy in printing of this drawing by any parties.

not be used for any purpose other than that for which it is intended.Yeoman McAllister

This drawing and its data are the copyright of Yeoman McAllister Architects and must

[email protected]

Tel 07825186637

SW19

Wimbledon

LONDON:-

PLANNING

The Santon Group

Proposed Residential Development, Davidson's Mains, Edinburgh

0 5 10 100m20 50

Scale 1:1250

N

18


Appendix B

Proposed Development Layout

BLOCK B

BLOCK A

BLOCK CExisting ac

cess route

to be ma

intained

with creat

ion of new

footpath

link

Existing P

ath Link

OPEN SPACE

COTTAGEFLATS

BINS

BINS

BINS

THE GREEN

THE GREEN

MAIN STREET

MAIN

ST

RE

ET

TH

E

GR

EE

N

CR

AM

ON

D

RO

AD S

OUT

H

EAST BARNTON GARDENS

QU

ALIT

Y

ST

RE

ET

MAIN STREET

MH

MH

WH

WH

WH

WH

WH

WH

WH

WH

WH

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

EL

EL

EL

EL

EL

EL

EL

EL

EL

EL

EL

EL

LP

RL

RLRL

RL

RL

RL

RL

EC

C

C

G

WT

GPS1

51.646

GPS2

52.193

R1

51.560

675420N

675440N 675440N

675460N 675460N

675480N 675480N

675500N 675500N

675520N 675520N

675540N 675540N

675560N 675560N

675580N 675580N

675600N 675600N

320560E

320560E

320580E

320580E

320600E

320600E

320620E

320620E

320640E

320640E

320660E

320660E

320680E

320700E

51.72

51.71

51.66

51.75

51.87

51.68

51.71

51.73

51.76

51.99

52.18

52.12

52.15

52.20

52.00

52.12

52.12

52.18

52.19

52.29

52.55

51.97

51.95

51.93

51.96

51.93

51.83

51.81

51.71

51.43

51.85

51.82

51.62

51.88

51.80

51.75

51.81

51.94

51.87

51.85

51.93

51.85

51.78

53.39

53.43

53.41

53.40

51.28

51.89

51.46

53.59

52.75

52.54

52.37

51.82

51.21

53.12

53.20

53.0252.96

53.06

53.23

53.18 53.22

53.30

53.2653.20

53.1253.01

53.03 53.19

53.17

53.16

53.0953.09

53.26

53.18

53.2453.21

52.83

52.60

52.60

52.37

52.12

57.33

57.38

56.51

59.36

58.73

60.60

61.3162.65

58.96

52.6052.54

52.54

52.37

55.63

57.40

53.77

54.65

56.15

55.82

59.09

59.91

57.82

52.95

52.95

51.43

59.25

53.37

52.86

52.61

52.36

57.00

52.55

52.32

52.03

51.81

51.42

51.17

51.57

51.52

51.52

FOOTPATH

(ASPHALT)STONE WALLSTONE WALL

STEPS

TIM

BE

R D

EC

KIN

G

ST

EP

BRIC

K W

ALL

BRIC

K W

ALL

DEN

SE

FOLI

AGE

WIR

E M

ESH F

ENCE

WIR

E M

ES

H F

EN

CE

WIR

E M

ES

H F

EN

CE

HO

USE

HO

US

E

HOUSE

HO

US

E

PU

BLIC H

OU

SE

FLATS

BUILDIN

G

GARDEN

PRIVATE

GARDEN

(NO ACCESS)

AS

PH

ALT

AS

PH

ALT

ST

ON

E W

ALL

GR

ASS

CO

NCRETE W

ALL

FOOTPATH

(ASP

HALT)

BRICK W

ALL

BRIC

K W

ALL

WIR

E M

ES

H F

EN

CE

WIRE M

ESH FENCE

WIRE M

ESH FENCE

WIRE MESH FE

NCE

TES

CO S

TO

RE

CAR PARK

(ASPHALT)

M A I N S T R E E T

LIN

E O

F O

VE

RH

EA

D WIR

ES

LIN

E O

F O

VE

RH

EA

D W

IRES

LINE OF OVERHEAD WIRES

OV

ER

GR

OW

N

PRIVATE

GARDENS

PRIVATE

GARDENS

CO

NCRETE K

ERB

GR

ASS

A21:500

/GW -- -- s/4715

PL-00

Site Layout Plan

Jan '20

CLIENT

JOB

DRAWING

Drawn JOB NO REVDR NODATEChecked Approved

SCALE SHEET SIZE

STATUS

[email protected]

Fax 0131 346 1189

Tel 0131 346 1145

Edinburgh EHI2 6AH

64 Coltbridge Avenue

Waterside Studios

EDINBURGH:-

yeomanmcallister0 50 100

accepts no responsibility for any inaccuracy in printing of this drawing by any parties.

not be used for any purpose other than that for which it is intended.Yeoman McAllister

This drawing and its data are the copyright of Yeoman McAllister Architects and must

[email protected]

Tel 07825186637

SW19

Wimbledon

LONDON:-

PLANNING

Proposed Residential Development, Davidson's Mains, Edinburgh

The Santon Group

Location of any New Trees

KEY:

TOTAL SITE AREA 4475sqm

Indicative Location of Existing Trees

Site Boundary

0 1 5 10 20m

Scale 1:500

30m 40m 50m

N

REVISIONS

DATE DRAWN DESCRIPTION CHECK APP ' DREV

19


Appendix C

Drainage Records

20


C1 Historic Records

Note watercourse

Circa 1949

Circa 1954 Conjectured Culvert

21


C2 Scottish Water Records

22


C3 CEC Municipal Records

300 Dia Sewer line

23


Appendix D

CCTV Report

User

Textbox

MH 2

User

Textbox

MH 1

User

Arrow

Wincan

Line

Wincan

Line

User

Arrow

User

Callout

This section could be Jetted to make Culvert run better

User

Textbox

MH 3

User

Oval

User

Textbox

MH 1A

User

Callout

MH 1 Buried & Located and Marked with yellow paint

User

Callout

Unable to locate MH 3 in bushed area

User

Arrow

User

Arrow

User

Textbox

MH 4

User

Textbox

MH 5

User

Textbox

MH 6

User

Arrow

User

Arrow

User

Arrow

User

Callout

Section has mass roots and fine roots in place See survey

User

Callout

Section Cast iron pipe encrustation throughout and fouling holding up water level in places See survey

Lanes Group plc8 Youngs Road, East Mains Ind Est, Broxburn

Tel. 01506 [email protected]

Project

Project Name: SAC - Tesco Metro, Cramond, Edinburgh

Project Date: 05/03/2020

Ver: 1.2019.6.1



Table of Contents

Project Information ...........................................................................................................................................................................................P-1

Section Summary ...........................................................................................................................................................................................P-2

Section: 1; MH 2 > MH 3 (MH 2X) ...........................................................................................................................................................................................1

Section: 2; MH 1 > MH 2 (MH 1 X) ...........................................................................................................................................................................................2

Section: 3; MH 1A > MH 1 (MH 1AX) ...........................................................................................................................................................................................3

Section: 4; MH 5 > MH 6 (MH 5X) ...........................................................................................................................................................................................4

Section: 5; MH 4 > MH 5 (MH 4X) ...........................................................................................................................................................................................6

Project Name Project Number Project DateSAC - Tesco Metro, Cramond, Edinburgh 05/03/2020

T-1



Client

Company: The Site Assessment Company

Site

Company: The Site Assessment Company

Street: Tesco Metro, 36 Cramond Road

Town or City: Edinburgh

Post Code: EH4 6AA

Contractor

Company: Lanes Group PLC

Contact: Nico Girasoli

Department: Operations Manager

Street: 8 Youngs Road, East Mains Ind Est

Town or City: Broxburn

County: West Lothian

Post Code: EH52 5LY

Phone: 01506 862286

Email: [email protected]

P-1

Project InformationProject Name Project Number Project Date

SAC - Tesco Metro, Cramond, Edinburgh 05/03/2020



Number of sections 5

Total length of sewer network 263.36 m

Total length of inspections 263.36 m

Total length of abandoned inspections 0.00 m

Total abandoned inspections 0

Number of section inspection photos 29

Number of section inspection videos 5

Number of section inspection scans 0

Number of section inclination measurements 0

PLR: MH 2X Upstream Node: MH 2

Inspection Direction: Downstream Downstream Node: MH 3

Inspected Length: 55.27 m Dia/Height: 750 mm

Total Length: 55.27 m Asset Material: Concrete pipe

No. m+ Code Observation

1 0.00 MH Start node type, manhole, reference number: MH 2

2 0.00 WL Water level, 10% of the vertical dimension

3 7.20 CN Connection other than junction at 4 o'clock, diameter: 150mm

4 10.60 DER Settled deposits, coarse, 10% cross-sectional area loss, start

5 19.87 DER Settled deposits, coarse, 10% cross-sectional area loss, finish

6 19.87 LL Line deviates left

7 19.87 SS Surface damage, spalling at 3 o'clock

8 23.59 DES Settled deposits, fine, 10% cross-sectional area loss, start

9 38.09 ID Infiltration, dripping at 12 o'clock


11 55.27 DES Settled deposits, fine, 10% cross-sectional area loss, finish

12 55.27 MHF Finish node type, manhole, reference number: MH 3

PLR: MH 1 X Upstream Node: MH 1

Inspection Direction: Upstream Downstream Node: MH 2







Section SummaryProject Name Project Number Project Date


P-2



PLR: MH 1AX Upstream Node: MH 1A








4 8.65 RM Roots, mass, 10% cross-sectional area loss

5 11.82 RFJ Roots, fine at joint






11 69.67 MHF Finish node type, manhole, reference number: MH 1A




Total Length: 49.19 m Asset Material: Vitrified clay




3 4.17 CCJ Crack, circumferential at joint from 9 o'clock to 3 o'clock



6 10.56 CCJ Crack, circumferential at joint from 7 o'clock to 4 o'clock


8 26.75 LL Line deviates left



11 32.14 RM Roots, mass, 10% cross-sectional area loss

12 33.36 RMJ Roots, mass at joint, 10% cross-sectional area loss


14 43.53 FL Fracture, longitudinal at 12 o'clock








Total Length: 55.18 m Asset Material: Cast iron



P-3






3 4.79 DEF Attached deposits, fouling at 6 o'clock, 5% cross-sectional area loss


5 16.13 DEF Attached deposits, fouling from 6 o'clock to 7 o'clock, 10% cross-sectional area loss

6 18.86 DEF Attached deposits, fouling at 6 o'clock, 10% cross-sectional area loss, start



9 36.45 DEF Attached deposits, fouling at 6 o'clock, 10% cross-sectional area loss, finish

10 38.30 DEE Attached deposits, encrustation from 12 o'clock to 12 o'clock, 5% cross-sectional area loss, start

11 55.18 DEE Attached deposits, encrustation from 12 o'clock to 12 o'clock, 5% cross-sectional area loss, finish




P-4



Section Inspection - 05/03/2020 - MH 2XSection Date TimeInspection Client`s Job Ref Weather Pre Cleaned PLR

1 1 05/03/20 12:24 Not Specified Dry No MH 2X

Operator Vehicle Camera Preset Length Legal Status Alternative IDDerek Santini PL17 TKN Crp300 1.20 m Watercourse Not Specified

Town or Village: Edinburgh Inspection Direction: Downstream Upstream Node: MH 2

Road: Tesco Metro Cramond Inspected Length: 55.27 m Upstream Pipe Depth: 3.000 m

Asset Location: Car park Total Length: 55.27 m Downstream Node: MH 3

Surface Type: Asphalt Footway Joint Length: 0.00 m Downstream Pipe Depth:

Asset Use: Culverted watercourse Asset Shape: Rectangular

Asset Type: Gravity drain/sewer Dia/Height: 750 mm

Year Constructed: Asset Material: Concrete pipe

Flow Control: No flow control Asset Lining Type: No Lining

Inspection Purpose: Condition survey Asset Lining Material: No Lining

Comments:

Recommendations: None

Scale: 1:481 Position [m] Code Observation MPEG Photo Grade

0.00 MH Start node type, manhole, reference number: MH 2 00:00:08

0.00 WL Water level, 10% of the vertical dimension 00:00:08

7.20 CN Connection other than junction at 4 o'clock, diameter:150mm

00:00:37

10.60 S01 DER Settled deposits, coarse, 10% cross-sectional area loss,start

00:00:50 MH2X_045b020e-7a23-

19.87 F01 DER Settled deposits, coarse, 10% cross-sectional area loss,finish

00:01:38 3

19.87 LL Line deviates left: Medium 00:01:39

19.87 SS Surface damage, spalling at 3 o'clock 00:01:46 MH2X_02b051c1-a184-

2

23.59 S02 DES Settled deposits, fine, 10% cross-sectional area loss, start 00:02:11 MH2X_a323ee6b-154a-

38.09 ID Infiltration, dripping at 12 o'clock 00:03:10 MH2X_16eda3a8-98cc-


55.27 F02 DES Settled deposits, fine, 10% cross-sectional area loss, finish 00:04:24 3

55.27 MHF Finish node type, manhole, reference number: MH 3 00:04:25

Structural Defects

Construction Features

Service & Operational Observations

Miscellaneous Features

STR No. Def STR Peak STR Mean STR Total STR Grade SER No. Def SER Peak SER Mean SER Total SER Grade

1 20.0 0.4 20.0 2.0 2 2.0 1.5 84.0 3.0

1

MH 2

Depth: 3.00 m

MH 3

Depth: m



Section Inspection - 05/03/2020 - MH 1 XSection Date TimeInspection Client`s Job Ref Weather Pre Cleaned PLR

2 2 05/03/20 12:53 Not Specified Dry No MH 1 X


Town or Village: Edinburgh Inspection Direction: Upstream Upstream Node: MH 1

Road: Tesco Metro Cramond Inspected Length: 34.05 m Upstream Pipe Depth:


Surface Type: Asphalt Footway Joint Length: 0.00 m Downstream Pipe Depth: 2.910 m

Asset Use: Culverted watercourse Asset Shape: Circular

Asset Type: Gravity drain/sewer Dia/Height: 650 mm Width: 650 mm




Comments: None





34.05 MHF Finish node type, manhole, reference number: MH 1 00:01:53 MH 1X_410bcd12-3d63-4

Structural Defects





0 0.0 0.0 0.0 1.0 0 0.0 0.0 0.0 1.0

2

MH 2

Depth: 2.91 m

MH 1

Depth: m



Section Inspection - 05/03/2020 - MH 1AXSection Date TimeInspection Client`s Job Ref Weather Pre Cleaned PLR

3 3 05/03/20 13:04 Not Specified Dry No MH 1AX


Town or Village: Edinburgh Inspection Direction: Upstream Upstream Node: MH 1A

Road: Tesco Metro Cramond Inspected Length: 69.67 m Upstream Pipe Depth:


Surface Type: Grass Joint Length: 0.00 m Downstream Pipe Depth:

Asset Use: Culverted watercourse Asset Shape: Circular





Comments: MH 1 is Buried






00:00:13

8.65 RM Roots, mass, 10% cross-sectional area loss 00:00:43 MH1AX_a131a9c7-21b6

3

11.82 RFJ Roots, fine at joint 00:00:58 MH1AX_a7e561df-cc78-

2

19.02 RFJ Roots, fine at joint 00:01:27 MH1AX_95c0246a-78d4

2

25.60 RFJ Roots, fine at joint 00:01:53 MH1AX_db2f0fa4-2a9e-

2

26.55 RFJ Roots, fine at joint 00:02:01 MH1AX_28fd4f13-8f8c-

2


00:02:33


00:04:37

69.67 MHF Finish node type, manhole, reference number: MH 1A 00:04:41 MH1AX_0f77cdcc-1a50-

Structural Defects





0 0.0 0.0 0.0 1.0 5 4.0 0.1 8.0 3.0

3

MH 1

Depth: m

MH 1A

Depth: m





Operator Vehicle Camera Preset Length Legal Status Alternative IDDerek Santini PL17 TKN Crp300 0.60 m Public Sewer Not Specified


Road: Silverknowes Terrace Inspected Length: 49.19 m Upstream Pipe Depth:

Asset Location: Road Total Length: 49.19 m Downstream Node: MH 6

Surface Type: Asphalt Footway Joint Length: 0.00 m Downstream Pipe Depth: 2.770 m

Asset Use: Foul waste Asset Shape: Circular


Year Constructed: Asset Material: Vitrified clay



Comments: None





4.17 CCJ Crack, circumferential at joint from 9 o'clock to 3 o'clock 00:00:29 MH5X_7b59723c-ed19-

2

5.18 RFJ Roots, fine at joint 00:00:40 MH5X_292a39c7-9f6e-4

2

6.04 RFJ Roots, fine at joint 00:00:46 MH5X_715fae4b-e43f-45

2

10.56 CCJ Crack, circumferential at joint from 7 o'clock to 4 o'clock 00:01:11 MH5X_d659f2b8-9eae-4

2

18.71 RFJ Roots, fine at joint 00:01:47 MH5X_8da27c39-442c-

2

26.75 LL Line deviates left 00:02:24

27.74 RFJ Roots, fine at joint 00:02:29 MH5X_dd7ea622-57a2-

2

30.46 RFJ Roots, fine at joint 00:02:43 MH5X_713244c8-fb20-4

2

32.14 RM Roots, mass, 10% cross-sectional area loss 00:02:53 MH5X_b0a80ebe-4a9b-

3

33.36 RMJ Roots, mass at joint, 10% cross-sectional area loss 00:03:02 MH5X_f1da3da4-ef7f-46

3

35.05 RMJ Roots, mass at joint, 5% cross-sectional area loss 00:03:11 MH5X_a738cd17-d780-

3

43.53 FL Fracture, longitudinal at 12 o'clock 00:03:49 MH5X_9a13b825-4ad5-

3

46.18 RMJ Roots, mass at joint, 15% cross-sectional area loss 00:04:09 MH5X_da89f892-02d0-4

3

4

MH 6

Depth: 2.77 m







47.50 RFJ Roots, fine at joint 00:04:18 MH5X_970c7c02-46c5-

2

48.31 RFJ Roots, fine at joint 00:04:24 MH5X_1a4564f3-59a5-4

2

49.19 MHF Finish node type, manhole, reference number: MH 5 00:04:31

Structural Defects





3 40.0 1.2 60.0 3.0 11 4.0 0.4 21.0 3.0

5

MH 5

Depth: m







Road: Silverknowes Terrace Inspected Length: 55.18 m Upstream Pipe Depth:

Asset Location: Road Total Length: 55.18 m Downstream Node: MH 5

Surface Type: Woodland Joint Length: 0.00 m Downstream Pipe Depth:

Asset Use: Foul waste Asset Shape: Circular


Year Constructed: Asset Material: Cast iron



Comments: None





4.79 DEF Attached deposits, fouling at 6 o'clock, 5% cross-sectionalarea loss

00:00:27 MH4X_5d04251e-988b-

2


16.13 DEF Attached deposits, fouling from 6 o'clock to 7 o'clock, 10%cross-sectional area loss

00:01:15 MH4X_04e1734b-1b6e-

3

18.86 S01 DEF Attached deposits, fouling at 6 o'clock, 10% cross-sectionalarea loss, start

00:01:28 MH4X_97ac3ac9-bc64-



36.45 F01 DEF Attached deposits, fouling at 6 o'clock, 10% cross-sectionalarea loss, finish

00:02:40 3

38.30 S02 DEE Attached deposits, encrustation from 12 o'clock to 12o'clock, 5% cross-sectional area loss, start

00:02:51

55.18 F02 DEE Attached deposits, encrustation from 12 o'clock to 12o'clock, 5% cross-sectional area loss, finish

00:04:02 2

55.18 MHF Finish node type, manhole, reference number: MH 4 00:04:04 MH4X_32e5beba-6c33-

Structural Defects





0 0.0 0.0 0.0 1.0 4 2.0 1.0 56.0 3.0

6

MH 5

Depth: m

MH 4

Depth: m

24


Appendix E

Study Limitations

25


STUDY LIMITATIONS

1. The study conducted, and this report has been prepared for the sole use and reliance of the

client and their advisors. The report shall not be relied upon or transferred to any other parties without written authorisation from ENV Consulting Engineers. If any unauthorised third party comes into possession of this report, they rely upon it at their own risk and the authors owe them no duty of care and skill.

2. The opinions and advice set out in this report relates specifically to the dated site and proposed

development as detailed herein at that time. They should not be transferred to other sites or to alternative schemes without prior consultation with ENV Consulting Engineers.

3. The findings and opinions conveyed herein are based on information obtained from external

sources as detailed in the report and which ENV Consulting Engineers believes are reliable. Nevertheless, ENV Consulting Engineers cannot guarantee the reliability of such information.

4. This report has been prepared in the light of legislation and best practices, current and

applicable at the time of writing.

5. ENV Consulting Engineers do not provide legal advice and the advice of lawyers may also be

required.

6. Given the nature of the process there may be unforeseen conditions that were not evident or

disclosed and as such cannot be presented and discussed in this report. This must be considered when reading the conclusions and recommendations noted in this report.

7. This report has been prepared for the exclusive use of the client and their representatives.

Any use of this report by third party, or any reliance on or decisions made based on it, are the responsibility of such third parties unless written confirmation at the request of the client has been provided by The ENV Consulting Engineers.

8. If new information becomes available in respect of the site, and/or legislation changes after

submission of this report and/or one year had elapsed since submission, the report should be referred back to The ENV Consulting Engineers for comment or amendment of the report where necessary.

9. In our opinion the normal insurances are in place for a project of this nature. This is based on

our company’s standing and project risk assessment. Unless considered at appointment stage a retrospective agreement will need to be put in place in respect of the actual limits in relation to the project involvement.

10. The period applicable for this liability under the agreement (ENV Ltd- Client) in any action or

proceedings for breach of the appointment for a period of 6 years from the completion of our services.

26


11. We understand that collateral warranties are not required as part of this project and as

such this report is for the sole use of the client and their representatives. The copyright for

all calculations, designs, drawings, and reports etc, defined as “The works” are held by

ENV Consulting Engineers Ltd with "All Rights Reserved". Permission is granted to the

Client named in this document to reproduce “The works” under the strict assumption this is

for the sole use of the intended named project. No element of the “The Works” can be

reproduced for any other purpose or project, without the written permission of Env payment

received of additional fees to the copyright holder named above.

Documents

Drainage Survey Report - Scarlett