Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd, Consulting Engineers | ABN 81 113 578 377 48 Chandos Street, St Leonards NSW 2065 | +612 9439 7288 | ttw.com.au

Civil Engineering

Report

137-143 Herring Road, Macquarie Park

Prepared for China Overseas Sydney Pty Ltd / 20th February, 2017

161371

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd 2 © Taylor Thomson Whitting

Contents

1.0 Introduction 3

1.1 The Site 3

1.2 Relevant Documents 4

2.0 Proposed Development 4

3.0 Stormwater Disposal Design including On-Site Detention 4

4.0 Stormwater Quality 6

4.1 Music Model 6

4.2 During Construction 7

5.0 Stormwater Point of Discharge 7

6.0 Flooding 8

7.0 Conclusions and Recommendations 8

Appendix A 10

Appendix B 11

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd 3 © Taylor Thomson Whitting

1.0 Introduction

Taylor Thomson Whitting Pty. Ltd. (TTW) was commissioned to provide civil engineering

advice and design to support the proposed development application for 137-143 Herring

Road, Macquarie Park. This report details the concept design for development application

(DA) stage only.

This report outlines the proposed stormwater disposal requirements, the predicted flood

levels at the site, finish surface levels and the impact these constraints will have on the

proposed development.

Figure 1: Site Location

1.1 The Site

The site is located at 137-143 Herring Road, Macquarie Park. The site is approximately 5,022m2 and is currently occupied by four three storey residences and an area of on-grade parking. It is within the Local Government Authority of City of Ryde Council and zoned as B4 Mixed Use.

The site generally falls at a grade of 1:17 (6%) from a reduced level (RL) of 73.02 at the south western corner to an RL of 65.20 at the north eastern corner.

Currently the site drains via a pit and pipe system to a kerb inlet pit located at the north eastern corner of the site. The site then drains through an existing easement to the east where it connects to in-ground stormwater infrastructure in Ivanhoe Place.

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd 4 © Taylor Thomson Whitting

1.2 Relevant Documents

The following documents have been reviewed in preparing this document:

City of Ryde Council’s Development Control Plan (DCP) 2014

City of Ryde Council’s Local Environment Plan (LEP) 2014

City of Ryde Council’s Water Sensitive Urban Design Guidelines dated June 2015

Macquarie Park Floodplain Risk Management Study dated February 2011

Blue Book – Managing Urban Stormwater: Soils and Construction (Landcom NSW)

2.0 Proposed Development

The proposal consists of one 22 storey building and one 23 storey building totalling 297 residential apartments and four levels of basement parking with communal open space and landscaped areas.

3.0 Stormwater Disposal Design including On-Site Detention

On-Site Detention (OSD) requirements have been calculated following City of Ryde Council’s DCP’s detailed method.

The DCP stipulates that the OSD must be designed to ensure that stormwater runoff post-development does not exceed the peak stormwater discharge occurring during the 5 year ARI pre-development storm.

The calculations were based on the total site area of 5022m2 – refer to Figure 2 for the pre-development and Figure 3 for the post-development impervious catchment plans.

Figure 2: Pre-Development Catchment Area

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd 5 © Taylor Thomson Whitting

Figure 3: Post-Development Catchment Area

Due to the fall of the site to the north eastern corner of the development and the location of the OSD tank, post-development landscaping areas along the north east and south east boundaries have been allowed to bypass. This bypass consists of a total area of 181m2 and has been compensated for by enlarging the OSD tank volume.

A summary of pre and post development catchment areas is shown in Table 1.

Table 1: Catchment Areas

Pre Development Post Development

Area (m2) Percent of

Total Area (m2)

Percent of Total to OSD

Impervious 2516 50.1% 3711 76.7%

Pervious 2506 49.9% 1130 23.3%

Bypass 0 181

To determine an appropriate OSD volume, DRAINS modelling was undertaken following the catchments described in Table 1. An OSD tank volume of 120m3 with an orifice size of 298mm was chosen to restrict these flows. A summary of the DRAINS results is shown in Table 2. Refer to Appendix C for detailed DRAINS results for the 5 year and 100 year ARI storm events.

Table 2: Pre and Post Development Flows Calculated from DRAINS

Pre Development

(L/s)

Post Development

without OSD (L/s)

Post Development with

OSD (L/s)

5 Year ARI Flows (m3/s) 172 184 106

100 Year ARI Flows (m3/s) 300 308 169

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd 6 © Taylor Thomson Whitting

4.0 Stormwater Quality

As the proposed development is a residential flat building with a total gross floor area greater than 1,500m2, City of Ryde Council requires water sensitive urban design (WSUD) measures to meet targets as described in Table 3.

Table 3: WSUD Stormwater Quality Performance Targets (Source: City of Ryde Council’s DCP 2014)

Pollutant % Post Development Average Annual Load Reduction

Gross Pollutants 90%

Total Suspended Solids 85%

Total Phosphorus 60%

Total Nitrogen 45%

4.1 Music Model

A water quality assessment of the site was undertaken using the Model for Urban Stormwater Improvement Conceptualisation (MUSIC) software program. The model was developed following the requirements outlined in Council’s Water Sensitive Urban Design Guidelines and Water Sensitive Urban Design MUSIC Modelling Guidelines.

Water quality devices incorporated within the design include a buffer zone, bioswales, Stormwater360 Enviropods and a Rocla CDS gross pollutant trap (GPT). A rainwater re-use tank of 80 kL is included within the basement carpark, with re-use rates based on landscaping irrigation for 1,850m2 following a rate of 0.4kL/m2/year.

Refer to Figure 4 for the MUSIC modelling layout.

Figure 4: MUSIC Modelling Layout

The modelling results as shown in Table 4 indicate the development meets Council’s requirements. The rainwater tank meets 80.5% of the reuse demand in accordance with Council’s requirements.

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd 7 © Taylor Thomson Whitting

Table 4: Post Development MUSIC Modelling Results

Pollutant % Post Development Average Annual Load Reduction

Gross Pollutants 100%

Total Suspended Solids 93.3%

Total Phosphorus 67.3%

Total Nitrogen 45.1%

4.2 During Construction

During the construction phase of the project, an erosion and sediment control plan will be implemented to prevent sediment laden stormwater from entering the council drainage network. Stormwater controls on site will be detailed in an erosion and sediment control plan, generally in accordance with the “Blue Book” – Managing Urban Stormwater: Soils and Construction (Landcom NSW). The plan will vary based on construction staging and methodology, but will typically include:

Upstream clean water diversion;

Silt fences;

Sedimentation basins;

Dust control; and

Vehicle wash down areas.

The erosion and sediment control plan includes an inspection and maintenance schedule and prevents sediment laden stormwater entering the council drainage system and the downstream environment.

5.0 Stormwater Point of Discharge

Currently the site drains via a pit and pipe system to a kerb inlet pit located at the north eastern corner of the site. This follows the topography of the site. The proposed development intends to utilise the same point of discharge. A stormwater easement benefitting the site from the point of discharge to Ivanhoe Place exists. However, we understand that the stormwater easement is somehow ‘disjointed’ where a legal stormwater easement across/through Ivanhoe Place (roadway lot) would be benefitting the proposed site.

A survey of the existing easements and stormwater drainage is attached in Appendix B. The site currently drains via a 300mm diameter pipe which then upsizes to a 375mm diameter prior to reaching Ivanhoe Place. This stormwater arrangement in Appendix B has been confirmed on site via a dye test and site survey. According to City of Ryde’s Development Control Plan, the width of interallotment easements is as according to Table 5. Therefore the required width of the easement across/through Ivanhoe Place would be 2.5m to accommodate the existing 375mm diameter pipe.

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd 8 © Taylor Thomson Whitting

Table 5: Width of Easements (Source: City of Ryde Council's DCP 2014)

At the time of writing this report, the developer of the proposed site China Overseas Sydney Ltd Pty (COS) through their lawyers are in negotiation with the owner of Ivanhoe Place being NSW Land and Housing Corporation (LAHC) to grant the proposed site of legal stormwater easement within the roadway lot. At this stage we have been advised by COS that the NSW LAHC is considering the granting of the subject easement. Refer to Appendix B for correspondence between COS and their lawyers for the status of current negotiations with the NSW LAHC.

6.0 Flooding

Following City of Ryde Council’s LEP (2014) and the Macquarie Park Floodplain Risk Management Study (2011), the site does not lie in an area requiring flood planning. Council’s flood study indicates that the site is located near the crest of the catchment and is not affected by mainstream flooding. This was confirmed with Council via phone conversation on the 12th of July 2016 and via ALS Survey Data.

7.0 Conclusions and Recommendations

To mitigate the impact of the development on the downstream environment we recommend the following:

The OSD at the proposed site have a minimum volume of 120m3 with an orifice size of 298mm to limit the flow to 169L/s for storms up to and including the 100 year ARI storm event. This meets Council’s requirements that the 100 year ARI storm event be at a maximum of 172 L/s. The OSD arrangement is as shown in the Civil Engineering Drawings affixed in Appendix A.

Stormwater quality controls including two bioswales, two Stormwater360 Enviropods and a Rocla CDS GPT be installed according to the Civil Engineering Drawings affixed in Appendix A. The rainwater tank is required to have a minimum volume of 80kL and to irrigate 1,850m2 of landscaping.

In accordance with City of Ryde Council’s DCP, the downstream easement width be a minimum of 2.5m wide to allow for the existing 375mm pipe across Ivanhoe Place from the site. Refer to attached survey in Appendix B.

The developer to continue negotiations with the NSW LAHC to obtain the easement across Ivanhoe Place. Refer to Appendix B for the status of current negotiations regarding the easement. Should negotiations be unsuccessful, an alternate point of stormwater discharge should be investigated.

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd 9 © Taylor Thomson Whitting

Prepared by TAYLOR THOMSON WHITTING (NSW) PTY LTD

Nemesio Biason Associate

P:\2016\1613\161371\Reports\TTW\Civil\170217 137-143 Herring Road DA Report.docx

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd Appendix B © Taylor Thomson Whitting

Appendix A

Civil Engineering Drawings

NOTES AND LEGEND

NTS JH

P2C001

A1

SJB Architects

Level 2

490 Crown street Surry Hills NSW 2010

T +61 2 9380 9911

F +61 2 9380 9922

www.sjb.com.au

137-143 HERRING ROAD

MACQUARIE PARK

161371

Rev Description Eng DateDraft

AuthorisedScale :

A1Drawn

Drawing NoJob No Revision

Plot File Created: Feb 17, 2017 - 3:46pm

Architect Sheet SubjectProject

Rev Description Eng DateDraft Rev Description Eng DateDraft

This drawing is copyright and is the property of TAYLOR THOMSON

WHITTING (NSW) Pty Ltd and must not be used without authorisation.

Structural Engineer

137-143 HERRING ROAD, MACQUARIE PARK

GENERAL NOTES

REFERENCE DRAWINGS

Consultant RevDwg Title Dwg No Date

PIT SCHEDULE

Type Description Cover (Clear Opening) Number

Note:

C010

SITEWORKS NOTES

STORMWATER DRAINAGE NOTES SURVEY AND SERVICES INFORMATION

SURVEY

UNDERGROUND SERVICES - WARNING

BOUNDARY AND EASEMENT NOTE

SAFETY IN DESIGN

EXISTING SERVICES

EXISTING STRUCTURES

EXISTING TREES

GROUNDWATER

EXCAVATIONS

GROUND CONDITIONS

HAZARDOUS MATERIALS

CONFINED SPACES

MANUAL HANDLING

WATER POLLUTION

SITE ACCESS/EGRESS

VEHICLE MOVEMENT

SURVEY LEGEND SITEWORKS LEGEND

DRAWING SCHEDULE

No. Drawing Title

C001 NOTES AND LEGEND SHEET

C002 SEDIMENT & EROSION CONTROL PLAN AND DETAIL

C003 STORMWATER PLAN (GROUND LEVEL)

C004 STORMWATER PLAN (BASEMENT LEVEL 4)

C010 DETAILS SHEET

Sequence Of Works

WATER QUALITY TESTING

REQUIREMENTS

EROSION AND SEDIMENT CONTROL

NOTES

EXISTING SEVICES LEGEND

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SEDIMENT & EROSION

CONTROL PLAN AND DETAIL

1:100, 1:20 JH

P2C002

A1

SJB Architects

Level 2

490 Crown street Surry Hills NSW 2010

T +61 2 9380 9911

F +61 2 9380 9922

www.sjb.com.au

137-143 HERRING ROAD

MACQUARIE PARK

161371

Rev Description Eng DateDraft

AuthorisedScale :

A1Drawn

Drawing NoJob No Revision

Plot File Created: Feb 17, 2017 - 11:57am

Architect Sheet SubjectProject

Rev Description Eng DateDraft Rev Description Eng DateDraft

This drawing is copyright and is the property of TAYLOR THOMSON

WHITTING (NSW) Pty Ltd and must not be used without authorisation.

THIS DRAWING TO BE READ IN CONJUNCTION WITH ALL

RELEVANT NOTES ON DRAWING C001.

Structural Engineer

TEMPORARY CONSTRUCTION VEHICLE EXIT

TYPICAL SECTION THROUGH CATCH DRAIN

SANDBAG KERB INLET SEDIMENT TRAPSEDIMENTATION TRAP

CONTROL PUMP OUT NOTES

EROSION AND SEDIMENT

SILTATION FENCE DETAIL

GEOTEXTILE FILTER PIT SURROUND

EROSION AND SEDIMENT

CONTROL LEGEND

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STORMWATER PLAN

(GROUND LEVEL)

1:200 JH

P2C003

A1

SJB Architects

Level 2

490 Crown street Surry Hills NSW 2010

T +61 2 9380 9911

F +61 2 9380 9922

www.sjb.com.au

137-143 HERRING ROAD

MACQUARIE PARK

161371

Rev Description Eng DateDraft

AuthorisedScale :

A1Drawn

Drawing NoJob No Revision

Plot File Created: Feb 20, 2017 - 11:00am

Architect Sheet SubjectProject

Rev Description Eng DateDraft Rev Description Eng DateDraft

This drawing is copyright and is the property of TAYLOR THOMSON

WHITTING (NSW) Pty Ltd and must not be used without authorisation.

THIS DRAWING TO BE READ IN CONJUNCTION WITH ALL

RELEVANT NOTES ON DRAWING C001.

Structural Engineer

DETAILS SHEET

AS SHOWN JH

P2C010

A1

SJB Architects

Level 2

490 Crown street Surry Hills NSW 2010

T +61 2 9380 9911

F +61 2 9380 9922

www.sjb.com.au

137-143 HERRING ROAD

MACQUARIE PARK

161371

Rev Description Eng DateDraft

AuthorisedScale :

A1Drawn

Drawing NoJob No Revision

Plot File Created: Feb 17, 2017 - 3:49pm

Architect Sheet SubjectProject

Rev Description Eng DateDraft Rev Description Eng DateDraft

This drawing is copyright and is the property of TAYLOR THOMSON

WHITTING (NSW) Pty Ltd and must not be used without authorisation.

THIS DRAWING TO BE READ IN CONJUNCTION WITH ALL

RELEVANT NOTES ON DRAWING C001.

Structural Engineer

SECTION THROUGH DETENTION TANK

ORIFICE PLATE DETAIL

TRASH SCREEN DETAIL

DETAIL D

DETAIL E

DETAIL F

PIT ACCESS STEP DETAIL

FLUSHING POINT (FP)

INTERMEDIATE RISER (IR)

DOWNPIPE CONNECTION TO uPVC STORMWATER

PIT TYPE xx

PIT CORNER DETAILS

SUBSOIL IN PAVED AREAS

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd Appendix B © Taylor Thomson Whitting

Appendix B

Easement and Stormwater Pipe Information

HERRING ROAD

EP

PIN

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1:2001

PLAN OF DETAIL AND LEVELS OVER SP 60143 ATNo.137-143 HERRING ROAD, MACQUARIE PARK

THIS IS THE PLAN REFERRED TOIN MY LETTER DATED:

Registered Surveyor NSWDateRevision Description Reference24/06/16A EXTRA DETAIL & LEVELS ADDED 43453

Drawing title

Client CHINA OVERSEAS SYDNEY PTY LTD42057DTreference numberproject number

30431

SHEET

site Area5022m

datumAHD

date of survey22/06/15

scale@A1

LGARYDE OF 2 SHEETS

20/07/16B EXTRA ADJOINING DETAIL & LEVELS ADDED 4345311/08/16C EXTRA ADJOINING LEVEL & DETAIL ADDED 4363023/09/16D EXTRA STORMWATER DETAIL ADDED 43630

Registered Surveyors NSWLOCKLEY

www.ltsl.com.au

Suite 1, Level 1810 Pacific HighwayGordon NSW 2072Locked Bag 5Gordon NSW 2072P 1300 587 000F 02 9499 7760

2

DateRevision Description Reference10/02/17E STORMWATER DETAIL & LEVELS ADDED, SHEET 2 4425116/02/17F STORMWATER DETAILS REVISED 44251

I

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P

L

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1:2002

PLAN OF DETAIL AND LEVELS OVER SP 60143 ATNo.137-143 HERRING ROAD, MACQUARIE PARK

THIS IS THE PLAN REFERRED TOIN MY LETTER DATED:

Registered Surveyor NSWDateRevision Description Reference24/06/16A EXTRA DETAIL & LEVELS ADDED 43453

Drawing title

Client CHINA OVERSEAS SYDNEY PTY LTD42057DTreference numberproject number

30431

SHEET

site Area5022m

datumAHD

date of survey22/06/15

scale@A1

LGARYDE OF 2 SHEETS

20/07/16B EXTRA ADJOINING DETAIL & LEVELS ADDED 4345311/08/16C EXTRA ADJOINING LEVEL & DETAIL ADDED 4363023/09/16D EXTRA STORMWATER DETAIL ADDED 43630

Registered Surveyors NSWLOCKLEY

www.ltsl.com.au

Suite 1, Level 1810 Pacific HighwayGordon NSW 2072Locked Bag 5Gordon NSW 2072P 1300 587 000F 02 9499 7760

2

DateRevision Description Reference10/02/17E STORMWATER DETAIL & LEVELS ADDED, SHEET 2 4425116/02/17F STORMWATER DETAILS REVISED 44251

From:

Sent:

To:

Cc:

Subject:

Dear Yirui We confirm that:

•

•

•

•

If you have any questions then please call. Regards

Brendan Maier

Partner

If this email was not addressed to you then you may not make any use of it. It may contain material that is

confidential or covered by client leg

email or telephone, reverse charges, and then delete the message and any attachment. Any views expressed in this

message are those of the individual sender, except where th

the views of this law practice.

When using email to communicate with us, please be aware that all information contained in your email is stored in

our server and later backed up with our other busi

strictly limited and controlled.

Subject:

Dear Yirui

We confirm that:

We act for China Overseas Sydney Pty Limited in relation to its property near Ivanhoe Place.

New South Wales Land and Housing Corporation (prepared to consider granting an etraversing Ivanhoe Place along the existing line of pipes.

Indications from our conversations with the Corporation's legal representative are that LAHC expects to provide delegated approvthe easement being delivered to the Corporation in registrable form. China Overseas Sydney Pty Limited has engaged surveyors and is in the process of preparing these plans and instruments.

We consen

If you have any questions then please call.

Regards

Brendan Maier

If this email was not addressed to you then you may not make any use of it. It may contain material that is

confidential or covered by client leg

email or telephone, reverse charges, and then delete the message and any attachment. Any views expressed in this

message are those of the individual sender, except where th

the views of this law practice.

When using email to communicate with us, please be aware that all information contained in your email is stored in

our server and later backed up with our other busi

strictly limited and controlled.

Brendan Maier <Brendan.Maier@cbp.com.au>

Thursday, 16 February 2017 6:38 PM

Yirui Huang

Baron Zhang

China Overseas Sydney Pty Limited

drainage

We act for China Overseas Sydney Pty Limited in relation to its property near Ivanhoe

New South Wales Land and Housing Corporation (prepared to consider granting an etraversing Ivanhoe Place along the existing line of pipes.

Indications from our conversations with the Corporation's legal representative are that LAHC expects to provide delegated approvthe easement being delivered to the Corporation in registrable form. China Overseas Sydney Pty Limited has engaged surveyors and is in the process of preparing these plans and instruments.

We consent to a copy of this email being forwarded to Council for information purposes.

If you have any questions then please call.

Colin Biggers & ABN 28 166 080 682 Level 42, 2 Park Street Sydney NSW 2000 AustraliaD +61 2 8281 4682 | M +61 400 033 905 | F +61 2 8281 4567 brendan.maier@cbp.com.auwww.cbp.com.au

If this email was not addressed to you then you may not make any use of it. It may contain material that is

confidential or covered by client legal privilege. If you have received this message in error, please advise us by reply

email or telephone, reverse charges, and then delete the message and any attachment. Any views expressed in this

message are those of the individual sender, except where th

the views of this law practice.

When using email to communicate with us, please be aware that all information contained in your email is stored in

our server and later backed up with our other busi

strictly limited and controlled.

Brendan Maier <Brendan.Maier@cbp.com.au>

Thursday, 16 February 2017 6:38 PM

Yirui Huang 黄一芮

Baron Zhang 张艳凯China Overseas Sydney Pty Limited

drainage

We act for China Overseas Sydney Pty Limited in relation to its property near Ivanhoe

New South Wales Land and Housing Corporation (prepared to consider granting an easement over its land in favour of your land in an area traversing Ivanhoe Place along the existing line of pipes.

Indications from our conversations with the Corporation's legal representative are that LAHC expects to provide delegated approvthe easement being delivered to the Corporation in registrable form. China Overseas Sydney Pty Limited has engaged surveyors and is in the process of preparing these

t to a copy of this email being forwarded to Council for information purposes.

If you have any questions then please call.

Colin Biggers & Paisley Pty Ltd ABN 28 166 080 682 Level 42, 2 Park Street Sydney NSW 2000 AustraliaD +61 2 8281 4682 | M +61 400 033 905 | F +61 2 8281 4567 brendan.maier@cbp.com.auwww.cbp.com.au

If this email was not addressed to you then you may not make any use of it. It may contain material that is

al privilege. If you have received this message in error, please advise us by reply

email or telephone, reverse charges, and then delete the message and any attachment. Any views expressed in this

message are those of the individual sender, except where th

When using email to communicate with us, please be aware that all information contained in your email is stored in

our server and later backed up with our other business records. Access to archived information by our personnel is

Brendan Maier <Brendan.Maier@cbp.com.au>

Thursday, 16 February 2017 6:38 PM

黄一芮

张艳凯; Christine

China Overseas Sydney Pty Limited

We act for China Overseas Sydney Pty Limited in relation to its property near Ivanhoe

New South Wales Land and Housing Corporation (asement over its land in favour of your land in an area

traversing Ivanhoe Place along the existing line of pipes.

Indications from our conversations with the Corporation's legal representative are that LAHC expects to provide delegated approval within 6 weeks of plans and instruments for the easement being delivered to the Corporation in registrable form. China Overseas Sydney Pty Limited has engaged surveyors and is in the process of preparing these

t to a copy of this email being forwarded to Council for information purposes.

If you have any questions then please call.

Paisley Pty Ltd

Level 42, 2 Park Street Sydney NSW 2000 AustraliaD +61 2 8281 4682 | M +61 400 033 905 | F +61 2 8281 4567 brendan.maier@cbp.com.au

If this email was not addressed to you then you may not make any use of it. It may contain material that is

al privilege. If you have received this message in error, please advise us by reply

email or telephone, reverse charges, and then delete the message and any attachment. Any views expressed in this

message are those of the individual sender, except where the sender expressly, and with authority, states them to be

When using email to communicate with us, please be aware that all information contained in your email is stored in

ness records. Access to archived information by our personnel is

Brendan Maier <Brendan.Maier@cbp.com.au>

Thursday, 16 February 2017 6:38 PM

; Christine 陈碧施China Overseas Sydney Pty Limited - Ivanhoe Place, stormwater

We act for China Overseas Sydney Pty Limited in relation to its property near Ivanhoe

New South Wales Land and Housing Corporation (LAHC) has advised us that it is asement over its land in favour of your land in an area

traversing Ivanhoe Place along the existing line of pipes.

Indications from our conversations with the Corporation's legal representative are that al within 6 weeks of plans and instruments for

the easement being delivered to the Corporation in registrable form. China Overseas Sydney Pty Limited has engaged surveyors and is in the process of preparing these

t to a copy of this email being forwarded to Council for information purposes.

Level 42, 2 Park Street Sydney NSW 2000 AustraliaD +61 2 8281 4682 | M +61 400 033 905 | F +61 2 8281 4567

If this email was not addressed to you then you may not make any use of it. It may contain material that is

al privilege. If you have received this message in error, please advise us by reply

email or telephone, reverse charges, and then delete the message and any attachment. Any views expressed in this

e sender expressly, and with authority, states them to be

When using email to communicate with us, please be aware that all information contained in your email is stored in

ness records. Access to archived information by our personnel is

Brendan Maier <Brendan.Maier@cbp.com.au>

陈碧施; '1608358'; Bethany Du

Ivanhoe Place, stormwater

We act for China Overseas Sydney Pty Limited in relation to its property near Ivanhoe

) has advised us that it is asement over its land in favour of your land in an area

Indications from our conversations with the Corporation's legal representative are that al within 6 weeks of plans and instruments for

the easement being delivered to the Corporation in registrable form. China Overseas Sydney Pty Limited has engaged surveyors and is in the process of preparing these

t to a copy of this email being forwarded to Council for information purposes.

Level 42, 2 Park Street Sydney NSW 2000 Australia D +61 2 8281 4682 | M +61 400 033 905 | F +61 2 8281 4567

If this email was not addressed to you then you may not make any use of it. It may contain material that is

al privilege. If you have received this message in error, please advise us by reply

email or telephone, reverse charges, and then delete the message and any attachment. Any views expressed in this

e sender expressly, and with authority, states them to be

When using email to communicate with us, please be aware that all information contained in your email is stored in

ness records. Access to archived information by our personnel is

; '1608358'; Bethany Du

Ivanhoe Place, stormwater

We act for China Overseas Sydney Pty Limited in relation to its property near Ivanhoe

) has advised us that it is asement over its land in favour of your land in an area

Indications from our conversations with the Corporation's legal representative are that al within 6 weeks of plans and instruments for

the easement being delivered to the Corporation in registrable form. China Overseas Sydney Pty Limited has engaged surveyors and is in the process of preparing these

t to a copy of this email being forwarded to Council for information purposes.

If this email was not addressed to you then you may not make any use of it. It may contain material that is

al privilege. If you have received this message in error, please advise us by reply

email or telephone, reverse charges, and then delete the message and any attachment. Any views expressed in this

e sender expressly, and with authority, states them to be

When using email to communicate with us, please be aware that all information contained in your email is stored in

ness records. Access to archived information by our personnel is

; '1608358'; Bethany Du

Ivanhoe Place, stormwater

We act for China Overseas Sydney Pty Limited in relation to its property near Ivanhoe

) has advised us that it is asement over its land in favour of your land in an area

Indications from our conversations with the Corporation's legal representative are that al within 6 weeks of plans and instruments for

the easement being delivered to the Corporation in registrable form. China Overseas Sydney Pty Limited has engaged surveyors and is in the process of preparing these

t to a copy of this email being forwarded to Council for information purposes.

al privilege. If you have received this message in error, please advise us by reply

email or telephone, reverse charges, and then delete the message and any attachment. Any views expressed in this

e sender expressly, and with authority, states them to be

When using email to communicate with us, please be aware that all information contained in your email is stored in

ness records. Access to archived information by our personnel is

China Overseas Sydney Pty Ltd February, 2017 Civil Engineering Report 161371

Taylor Thomson Whitting (NSW/VIC/ACT) Pty Ltd Appendix B © Taylor Thomson Whitting

Appendix C

DRAINS Modelling Results

DRAINS results prepared from Version 2017.04

5 YEAR ARI RESULTS

PIT / NODE DETAILS Version 8

Name Max HGL Max Pond Max SurfaceMax Pond Min Overflow Constraint

HGL Flow ArrivingVolume Freeboard (cu.m/s)

(cu.m/s) (cu.m) (m)

Pipe Bend 64.25 0.006 1.05 0.006 Inlet Capacity

Concrete Incasement61.8 0 2.13 None

Pit3885 61.29 0.006 1.27 0.003 Inlet Capacity

Outlet KIP Ivan Pl 60.9 0.003

SUB-CATCHMENT DETAILS

Name Max Paved Grassed Paved Grassed Supp. Due to Storm

Flow Q Max Q Max Q Tc Tc Tc

(cu.m/s) (cu.m/s) (cu.m/s) (min) (min) (min)

Pre Development0.172 0.098 0.076 5 5 5 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

Post Dev 0.175 0.112 0.066 5 5 5 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

Bypass Landscape0.006 0.001 0.004 5 5 5 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

Post Develop 0.178 0.145 0.034 5 5 5 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

Outflow Volumes for Total Catchment (0.91 impervious + 0.59 pervious = 1.51 total ha)

Storm Total RainfallTotal RunoffImpervious RunoffPervious Runoff

cu.m cu.m (Runoff %)cu.m (Runoff %)cu.m (Runoff %)

AR&R 5 year, 5 minutes storm, average 151 mm/h, Zone 1189.79 117.60 (62.0%)105.86 (92.1%)11.73 (15.7%)

AR&R 5 year, 10 minutes storm, average 117 mm/h, Zone 1294.12 201.90 (68.6%)169.08 (94.9%)32.82 (28.3%)

AR&R 5 year, 20 minutes storm, average 85.9 mm/h, Zone 1431.88 311.29 (72.1%)252.55 (96.5%)58.75 (34.5%)

AR&R 5 year, 30 minutes storm, average 70.3 mm/h, Zone 1530.17 380.86 (71.8%)312.11 (97.2%)68.75 (32.9%)

AR&R 5 year, 1 hour storm, average 48.5 mm/h, Zone 1731.53 536.88 (73.4%)434.12 (97.9%)102.76 (35.6%)

AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1983.39 734.14 (74.7%)586.73 (98.5%)147.41 (38.0%)

AR&R 5 year, 3 hours storm, average 25.6 mm/h, Zone 11158.41 874.93 (75.5%)692.78 (98.7%)182.15 (39.9%)

AR&R 5 year, 6 hours storm, average 17.0 mm/h, Zone 11538.54 1177.78 (76.6%)923.11 (99.0%)254.67 (42.0%)

PIPE DETAILS

Name Max Q Max V Max U/S Max D/S Due to Storm

(cu.m/s) (m/s) HGL (m) HGL (m)

P1600 0.107 2.79 65.337 64.993 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

Pipe6703 0.107 4.03 64.07 62.362 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

Pipe6720 0.111 3 61.655 61.288 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

Pipe8647 0.109 2.54 61.164 60.901 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

CHANNEL DETAILS

Name Max Q Max V Due to Storm

(cu.m/s) (m/s)

OVERFLOW ROUTE DETAILS

Name Max Q U/S Max Q D/S Safe Q Max D Max DxV Max Width Max V Due to Storm

OF4470 0.172 0.172 0 0.064 0.06 4 0.89 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

OF4392 0.006 0.006 0 0.019 0.01 1.92 0.31 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

OF1975 0 0 0 0 0 0 0

OF12263 0.006 0.006 0 0.016 0.01 1.63 0.44 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

OF12265 0.003 0.003 0 0.01 0.01 1.04 0.54 AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

DETENTION BASIN DETAILS

Name Max WL MaxVol Max Q Max Q Max Q

Total Low Level High Level

Basin1399 65.66 67.5 0.107 0.107 0

CONTINUITY CHECK for AR&R 5 year, 2 hours storm, average 32.6 mm/h, Zone 1

Node Inflow Outflow Storage ChangeDifference

(cu.m) (cu.m) (cu.m) %

N2 223.68 223.68 0 0

N97 238.13 238.13 0 0

N3585 5.99 5.99 0 0

Pre Outlet 223.68 223.68 0 0

Basin1399 266.35 251.12 15.23 0

Pipe Bend 257.11 257.04 0 0

Concrete Incasement251.05 251.18 0 0

Pit3885 257.17 256.92 0 0.1

Outlet KIP Ivan Pl256.92 256.92 0 0

Run Log for 170217 CLEAN Herring Road Drains with new imp area.drn run at 16:18:54 on 17/2/2017

No water upwelling from any pit. Freeboard was adequate at all pits.

Flows were safe in all overflow routes.

DRAINS results prepared from Version 2017.04

100 YEAR ARI RESULTS

PIT / NODE DETAILS Version 8

Name Max HGL Max Pond Max SurfaceMax Pond Min Overflow Constraint

HGL Flow ArrivingVolume Freeboard (cu.m/s)

(cu.m/s) (cu.m) (m)

Pipe Bend 64.29 0.01 1.01 0.01 Inlet Capacity

Concrete Incasement62.59 0 1.34 None

Pit3885 61.34 0.01 1.22 0.005 Inlet Capacity

Outlet KIP Ivan Pl61.06 0.005

SUB-CATCHMENT DETAILS

Name Max Paved Grassed Paved Grassed Supp. Due to Storm

Flow Q Max Q Max Q Tc Tc Tc

(cu.m/s) (cu.m/s) (cu.m/s) (min) (min) (min)

Pre Development 0.3 0.159 0.141 5 5 5 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

Post Dev 0.303 0.181 0.122 5 5 5 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

Bypass Landscape0.01 0.002 0.008 5 5 5 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

Post Develop 0.298 0.234 0.064 5 5 5 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

Outflow Volumes for Total Catchment (0.91 impervious + 0.59 pervious = 1.51 total ha)

Storm Total RainfallTotal RunoffImpervious RunoffPervious Runoff

cu.m cu.m (Runoff %)cu.m (Runoff %)cu.m (Runoff %)

AR&R 100 year, 5 minutes storm, average 246 mm/h, Zone 1309.2 235.66 (76.2%)178.22 (95.1%)57.45 (47.1%)

AR&R 100 year, 10 minutes storm, average 192 mm/h, Zone 1482.66 388.72 (80.5%)283.32 (96.9%)105.40 (55.4%)

AR&R 100 year, 20 minutes storm, average 143 mm/h, Zone 1718.96 593.52 (82.6%)426.50 (97.9%)167.02 (59.0%)

AR&R 100 year, 30 minutes storm, average 118 mm/h, Zone 1889.9 737.25 (82.8%)530.08 (98.3%)207.17 (59.1%)

AR&R 100 year, 1 hour storm, average 82.5 mm/h, Zone 11244.35 1042.97 (83.8%)744.85 (98.8%)298.11 (60.8%)

AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 11707.41 1453.66 (85.1%)1025.44 (99.1%)428.22 (63.6%)

AR&R 100 year, 3 hours storm, average 45.2 mm/h, Zone 12045.29 1755.95 (85.9%)1230.17 (99.3%)525.79 (65.2%)

AR&R 100 year, 6 hours storm, average 30.8 mm/h, Zone 12787.41 2401.56 (86.2%)1679.85 (99.5%)721.71 (65.7%)

PIPE DETAILS

Name Max Q Max V Max U/S Max D/S Due to Storm

(cu.m/s) (m/s) HGL (m) HGL (m)

P1600 0.161 3.11 65.373 65.027 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

Pipe6703 0.17 6.26 64.073 62.59 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

Pipe6720 0.165 2.37 62.213 61.347 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

Pipe8647 0.164 3.84 61.164 61.06 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

CHANNEL DETAILS

Name Max Q Max V Due to Storm

(cu.m/s) (m/s)

OVERFLOW ROUTE DETAILS

Name Max Q U/S Max Q D/S Safe Q Max D Max DxV Max Width Max V Due to Storm

OF4470 0.3 0.3 0 0.083 0.09 4 1.1 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

OF4392 0.01 0.01 0 0.024 0.01 4 0.29 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

OF1975 0 0 0 0 0 0 0

OF12263 0.01 0.01 0 0.021 0.01 4 0.42 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

OF12265 0.005 0.005 0 0.013 0.01 1.33 0.59 AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

DETENTION BASIN DETAILS

Name Max WL MaxVol Max Q Max Q Max Q

Total Low Level High Level

Basin1399 66.11 120.7 0.161 0.161 0

CONTINUITY CHECK for AR&R 100 year, 2 hours storm, average 56.6 mm/h, Zone 1

Node Inflow Outflow Storage ChangeDifference

(cu.m) (cu.m) (cu.m) %

N2 462.85 462.85 0 0

N97 478.37 478.37 0 0

N3585 14.57 14.57 0 0

Pre Outlet 462.85 462.85 0 0

Basin1399 497.87 482.5 15.37 0

Pipe Bend 497.07 496.49 0 0.1

Concrete Incasement481.92 481.86 0 0

Pit3885 496.42 496.36 0 0

Outlet KIP Ivan Pl496.36 496.36 0 0

Run Log for 170217 CLEAN Herring Road Drains with new imp area.drn run at 16:18:14 on 17/2/2017

No water upwelling from any pit. Freeboard was adequate at all pits.

Flows were safe in all overflow routes.

DETAILS SHEET

AS SHOWN JH

P2C010

A1

SJB Architects

Level 2

490 Crown street Surry Hills NSW 2010

T +61 2 9380 9911

F +61 2 9380 9922

www.sjb.com.au

137-143 HERRING ROAD

MACQUARIE PARK

161371

Rev Description Eng DateDraft

AuthorisedScale :

A1Drawn

Drawing NoJob No Revision

Plot File Created: Feb 17, 2017 - 3:49pm

Architect Sheet SubjectProject

Rev Description Eng DateDraft Rev Description Eng DateDraft

This drawing is copyright and is the property of TAYLOR THOMSON

WHITTING (NSW) Pty Ltd and must not be used without authorisation.

THIS DRAWING TO BE READ IN CONJUNCTION WITH ALL

RELEVANT NOTES ON DRAWING C001.

Structural Engineer

SECTION THROUGH DETENTION TANK

ORIFICE PLATE DETAIL

TRASH SCREEN DETAIL

DETAIL D

DETAIL E

DETAIL F

PIT ACCESS STEP DETAIL

FLUSHING POINT (FP)

INTERMEDIATE RISER (IR)

DOWNPIPE CONNECTION TO uPVC STORMWATER

PIT TYPE xx

PIT CORNER DETAILS

SUBSOIL IN PAVED AREAS

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STORMWATER PLAN

(GROUND LEVEL)

1:200 JH

P2C003

A1

SJB Architects

Level 2

490 Crown street Surry Hills NSW 2010

T +61 2 9380 9911

F +61 2 9380 9922

www.sjb.com.au

137-143 HERRING ROAD

MACQUARIE PARK

161371

Rev Description Eng DateDraft

AuthorisedScale :

A1Drawn

Drawing NoJob No Revision

Plot File Created: Feb 20, 2017 - 11:00am

Architect Sheet SubjectProject

Rev Description Eng DateDraft Rev Description Eng DateDraft

This drawing is copyright and is the property of TAYLOR THOMSON

WHITTING (NSW) Pty Ltd and must not be used without authorisation.

THIS DRAWING TO BE READ IN CONJUNCTION WITH ALL

RELEVANT NOTES ON DRAWING C001.

Structural Engineer

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SEDIMENT & EROSION

CONTROL PLAN AND DETAIL

1:100, 1:20 JH

P2C002

A1

SJB Architects

Level 2

490 Crown street Surry Hills NSW 2010

T +61 2 9380 9911

F +61 2 9380 9922

www.sjb.com.au

137-143 HERRING ROAD

MACQUARIE PARK

161371

Rev Description Eng DateDraft

AuthorisedScale :

A1Drawn

Drawing NoJob No Revision

Plot File Created: Feb 17, 2017 - 11:57am

Architect Sheet SubjectProject

Rev Description Eng DateDraft Rev Description Eng DateDraft

This drawing is copyright and is the property of TAYLOR THOMSON

WHITTING (NSW) Pty Ltd and must not be used without authorisation.

THIS DRAWING TO BE READ IN CONJUNCTION WITH ALL

RELEVANT NOTES ON DRAWING C001.

Structural Engineer

TEMPORARY CONSTRUCTION VEHICLE EXIT

TYPICAL SECTION THROUGH CATCH DRAIN

SANDBAG KERB INLET SEDIMENT TRAPSEDIMENTATION TRAP

CONTROL PUMP OUT NOTES

EROSION AND SEDIMENT

SILTATION FENCE DETAIL

GEOTEXTILE FILTER PIT SURROUND

EROSION AND SEDIMENT

CONTROL LEGEND

NOTES AND LEGEND

NTS JH

P2C001

A1

SJB Architects

Level 2

490 Crown street Surry Hills NSW 2010

T +61 2 9380 9911

F +61 2 9380 9922

www.sjb.com.au

137-143 HERRING ROAD

MACQUARIE PARK

161371

Rev Description Eng DateDraft

AuthorisedScale :

A1Drawn

Drawing NoJob No Revision

Plot File Created: Feb 17, 2017 - 3:46pm

Architect Sheet SubjectProject

Rev Description Eng DateDraft Rev Description Eng DateDraft

This drawing is copyright and is the property of TAYLOR THOMSON

WHITTING (NSW) Pty Ltd and must not be used without authorisation.

Structural Engineer

137-143 HERRING ROAD, MACQUARIE PARK

GENERAL NOTES

REFERENCE DRAWINGS

Consultant RevDwg Title Dwg No Date

PIT SCHEDULE

Type Description Cover (Clear Opening) Number

Note:

C010

SITEWORKS NOTES

STORMWATER DRAINAGE NOTES SURVEY AND SERVICES INFORMATION

SURVEY

UNDERGROUND SERVICES - WARNING

BOUNDARY AND EASEMENT NOTE

SAFETY IN DESIGN

EXISTING SERVICES

EXISTING STRUCTURES

EXISTING TREES

GROUNDWATER

EXCAVATIONS

GROUND CONDITIONS

HAZARDOUS MATERIALS

CONFINED SPACES

MANUAL HANDLING

WATER POLLUTION

SITE ACCESS/EGRESS

VEHICLE MOVEMENT

SURVEY LEGEND SITEWORKS LEGEND

DRAWING SCHEDULE

No. Drawing Title

C001 NOTES AND LEGEND SHEET

C002 SEDIMENT & EROSION CONTROL PLAN AND DETAIL

C003 STORMWATER PLAN (GROUND LEVEL)

C004 STORMWATER PLAN (BASEMENT LEVEL 4)

C010 DETAILS SHEET

Sequence Of Works

WATER QUALITY TESTING

REQUIREMENTS

EROSION AND SEDIMENT CONTROL

NOTES

EXISTING SEVICES LEGEND