Water Quality Mitigation Measures Plan

for

Mai Po Nature Reserve Infrastructure Upgrade Project

(Environmental Permit No. EP-598/2022)

June 2023

(Version 5.0)

Certified By Environmental Team Leader:

(Joan Choi)

Company: Ka Shing Management Consultancy Ltd

.

Table of Content

Page

No.

1. PROJECT BACKGROUND ......................................................................................................... 1

2. REQUIREMNTS OF WATER QUALITY MITIGATION MEASURES PLAN .................................... 2

List of Appendices

Appendix A – The location of the Project

Appendix B – Locations of Gei Wai and TH2-3

Appendix C – The scheduled plan of water draining and re-filling of Gei Wai 7, 8a and 19b

and 20e

Appendix D – The recommended mitigation measures

Appendix E – Indicative Construction Programme

1 | Page

1. PROJECT BACKGROUND

1.1 The Mai Po Nature Reserve has served Hong Kong as one of the most valuable ecological assets

in the city, and is managed by the World Wide Fund for Nature Hong Kong (“WWF”). WWF

proposes to update of an existing concrete footpath of about 1.5m wide to a raised wooden

boardwalk of about 1.65m wide, construction of a new three-storey tower hide (TH2) and the

associated access wooden boardwalk of about 156m long and 1.65m wide; and construction of a

new three-storey tower hide (TH3) and the associated access wooden boardwalk of about 85m

long and 1.65m wide. The location of the Project as shown in the Appendix A of this report.

1.2 The project site is located in Mai Po Nature Reserve (MPNR) where has been managed by

World Wide Fund for Nature Hong Kong (“WWF”) since 1984. More than 20,000 people per

year visiting the MPNR and growing in visitor numbers is anticipated. Most of the existing

facilities have been in use for more than 20 years, in order to cater for an increasing number of

visitors and providing the good condition of facilities in the future, the upgrade of infrastructure

is proposed. The WWF had completed an Environmental Impact Assessment (EIA) and is the

Permit Holder.

1.3 The Project under Mai Po Nature Reserve Infrastructure Upgrade Project (Register No. AEIAR-

233/2022) is approved by the EIA report and later granted an Environmental Permit (EP) No.:

EP-598/2022. The approved EIA report described both the construction phase and operational

phase.

1.4 Pursuant to Condition 2.14 of the EP No.: EP-598/2022, The Permit Holder shall, no later than

one month before the commencement of construction of the Project, deposit with the Director 4

hard copies and 1 electronic copy of a Water Quality Mitigation Measures Plan (WQMMP) of

the Project.

2 | Page

2. REQUIREMNTS OF WATER QUALITY MITIGATION

MEASURES PLAN

2.1 The Water Quality Mitigation Measures Plan (WQMMP) shall include a schedule of draining, re-

profiling and re-filling of Gei Wai 7, 8a, 19 and 20e by taking into account the construction

programme of TH2 and TH3 indicated in Appendix E to ensure these Gei Wais adjacent to the

construction sites of TH2 and TH3 shall be drained before the commencement and refilled after

the completion of the foundation works. Appendix B shows locations of Gei Wai and TH2-3.

2.2 The Scheduled plan of draining and re-filling of Gei Wai 7, 8a, 19b and 20e as shown in Appendix

C state the latest construction programme of Tower Hide 2, Tower Hide 3 and enhancement work

of Footpath which will be done from 16 April to 15 October 2023. All works will conform with

the latest Mai Po Habitat Management work 2023.

2.3 The Appendix D demonstrates an implementation schedule in table form to clearly list out the

mitigation measures to be implemented, the implementation party, location, timing and

environmental performance required for implementation of the mitigation measures.

2.4 All mitigation measures recommended and requirements specified in the approved EIA and

EM&A Manual and the implementation schedule shall be fully implemented as shown in the

Appendix D of this report.