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W Water Supplies Department - i - Agreement No. CE 6/2011 (WS)

Agreement No. CE 6/2011 (WS)

Pressure Management and District Metering for the Fresh Water Distribution Systems of the Kowloon East, Sha Tin, Yuen Long, Sheung

Shui & Fanling and Islands Major Supply Zones – Investigation

Draft BRIEF(16 May 2011)

Table of Contents

Clause Page

1. Introduction ………………………………………………………………… 1

2. Description of the Project ………………………………..……………..….. 1

3. Objectives of the Assignment ………………………………………….…... 4

4. Description of the Assignment ………………………..………………….... 4

5. Deliverables ……………………………………………..…………………. 5

6. Services to be provided by the Consultants ………………………………... 9

7. Response to Queries …………………………………………………...…… 29

8. Programme of Implementation.…………………………..…………….…... 29

9. Progress Reports ……………………………………………..…………….. 32

10. Financial Management …………………………………….…..………….... 32

11. Standards and Specifications …………………………………..…………... 33

12. Variations and Other Commitments (Not Used)…….….…………..………. 33

13. Director’s Representative …………………………………………………... 33

14. Control of the Project and Assignment …………………………………….. 33

15. Information and Facilities Provided by the Employer ……….…………...... 34

16. Consultants’ Office and Staffing ………………………………………….... 34

17. Specialist and Sub-consultant Services …………………………………….. 35

18. Surveys ………………………………………………………………..……. 35

19. Insurance …………………………………………………………………… 36

Appendix I - Sketches

Appendix II - List of Large Housing Estates

Appendix III - List of Existing and Planned WDAs/DMAs/PMAs

Appendix IV - Responsibility for Survey Works

Enclosure 1

W Water Supplies Department Page 1 of 36 Agreement No. CE 6/2011 (WS)

Agreement No. CE 6/2011 (WS)

Pressure Management and District Metering for the Fresh WaterDistribution Systems of the Kowloon East, Sha Tin, Yuen Long,

Sheung Shui & Fanling and Islands Major Supply Zones –Investigation

Draft BRIEF

1. Introduction

1.1 This Brief is to be read in conjunction with the Memorandum of Agreement, the General Conditions of Employment of Engineering and Associated Consultants for an Investigation Assignment (1997 Edition) (hereinafter referred to as the General Conditions of Employment (GCE)), the Special Conditions of Employment (SCE) and the Schedule of Fees (SoF).

2. Description of the Project

2.1 Based on the recommendations of the previous consultancy studies, the Water Supplies Department (WSD) has progressively implemented pressure management (PM) and continuous monitoring (CM) schemes in various areas in Hong Kong to control and reduce leakage in the fresh water distribution systems since 1997. WSD has established twenty two small-scale PM and CM schemes. Recently, WSD has completed the studies on the large-scale PM and CM schemes for the North Point & Shau Kei Wan, Tai Po, Kowloon Central, Western, Central, Eastern, Sai Wan, Kowloon West, Tsuen Wan East,Tsuen Wan West, Tuen Mun, Sai Kung, Aberdeen and Red Hill Major Supply Zones (MSZs). As a long-term strategy to combat high water leakage problems in the territory, WSD intends to further extend the implementation of PM and CM schemes to cover the remaining MSZs in Hong Kong,including the Kowloon East, Sha Tin, Yuen Long, Sheung Shui & Fanling and Islands MSZs.

2.2 The Project is to design the PM and CM schemes for the Kowloon East, Sha Tin, Yuen Long, Sheung Shui & Fanling and Islands MSZs. The Project also includes the establishment of the CM schemes for continuously monitoring the water consumption of the large housing estates (LHEs) located within thefive MSZs. These MSZs comprise the supply zones (SZs) of the following fresh water service reservoirs (FWSRs), fresh water tanks (FWTs), fresh water balance tanks (FWBTs), fresh water break pressure tanks (FWBPTs) and direct supply from the water treatment works (WTWs):

Kowloon East MSZ:


(a) Anderson Road FWSR (SR 098);(b) Anderson Road No. 2 FWSR (SR 227);(c) Choi Wan Road FWSR (SR 247);(d) Diamond Hill No. 2 FWSR (SR 214);(e) Kwun Ping FWBPT (WT 073);(f) Kwun Tong High Level FWSR (SR 058);(g) Lam Tin High Level FWSR (SR 134);(h) Lam Tin Low Level FWSR (SR 074);(i) Lion Rock High Level FR Primary SR (SR 052);(j) Lion Rock High Level No. 2 FR Primary SR (SR 104);(k) Ma Pui & Che Teng FWT (WT 034);(l) Ngau Chi Wan FWSR (SR 139);(m) Ngau Chi Wan High Level FWSR (SR 181);(n) Ngau Tau Kok FWSR (SR 034);(o) Sha Tin Pass FWT (WT 074);(p) Yau Tong FWSR (SR 068);(q) Yau Tong FWT (WT 130); and(r) Yau Tong No. 2 FWSR (SR 228).

Sha Tin MSZ:(a) A Kung Kok FWSR (SR 144);(b) Fa Sam Hang FWT (WT 128);(c) Ha Wo Che FWSR (SR 132);(d) Ma On Shan FWSR (SR 177);(e) Ma On Shan No. 2 FWSR (SR 237);(f) Ma On Shan Tsuen FWT (WT 132);(g) Pai Tau FWT (WT 022);(h) Pai Tau Hang FWSR (SR 136);(i) Pak Tin North FWT (WT 060);(j) Sha Tin Heights FWT (WT 065);(k) Sha Tin North FWSR (SR 106);(l) Sha Tin South FWSR (SR 166);(m) Sha Tin West FWSR (SR 151);(n) Sha Tin WTW (TW 013);(o) Shui Chuen O FWSR (SR 234);(p) Siu Lek Yuen FWSR (SR 174);(q) To Shek FWSR (SR 114);(r) Wong Chuk Yeung FWBPT (WT 115);(s) Wong Chuk Yeung FWT (WT 114); and(t) Yau Oi Tsuen FWT (WT 038).

Yuen Long MSZ:(a) A Kung Tin FWBT (WT 050);(b) Fung Kong Tsuen FWT (WT 052);(c) Fung Kong Tsuen No. 2 FWT (WT 094);(d) Kap Lung FWT (WT 123);(e) Ki Lun Shan FWT (WT 033);(f) Ngau Tam Mei FW Primary SR (SR 225);


(g) Sheung Tsuen FWBT (WT 037);(h) Shung Shan San Tsuen FWT (WT 057);(i) Tan Kwai Tsuen North FWSR (SR 226);(j) Tan Kwai Tsuen South FWSR (SR 216);(k) Wang Chau FWSR (SR 125);(l) Wong Chuk Yuen FWT (WT 131); and(m) Yuen Long FWSR (SR 043).

Sheung Shui & Fanling MSZ:(a) Ha Hang FWSR (SR 113);(b) Kwu Tung FWSR (SR 202);(c) Pak Fu Shan FWT (WT 071);(d) Ping Che FWSR (SR 241);(e) Sai Lau Kong FWBPT (WT 117);(f) Sheung Shui WTW (TW 017);(g) So Lo Pun FWBPT (WT 118);(h) Table Hill FWSR (SR 140);(i) Tai Mei Tuk FWT (WT 061);(j) Tai Po East High Level FWSR (SR 172);(k) Tai Po East Low Level FWSR (SR 201);(l) Tong Hang FWSR (SR 105);(m) Tong Hang No. 2 FWSR (SR 128); and(n) Wu Kau Tang FWT (WT 116).

Islands MSZ:(a) Cheung Chau FWSR (SR 016);(b) Cheung Chau No. 2 FWSR (SR 116);(c) Cheung Chau No. 3 FWSR (SR 163);(d) Cheung Sha FWSR (SR 164);(e) Lai Chi Yuen FWT (WT 119);(f) Lamma Island FWSR (SR 127);(g) Mount Davis FW Primary SR (SR 063);(h) Ngong Ping FWSR (SR 238);(i) Ngong Ping FWT (WT 111);(j) Peng Chau FWSR (SR 055);(k) Peng Chau No. 2 FWSR (SR 156);(l) Sham Wat FWBPT (WT 075);(m) Sham Wat FWT (WT 076);(n) Shap Long FWBPT (WT 012);(o) Silver Mine Bay FWSR (SR 048);(p) Siu Ho Wan WTW (TW 025);(q) Sunny Bay FWSR (SR 218);(r) Tai Long Wan FWT (WT 110);(s) Tai O FWSR (SR 110);(t) Tai O FWT (WT 103);(u) Tai Tung Shan FWSR (SR 180);(v) Tai Tung Shan FWT (WT 062);(w) Tei Tong Tsai FWBPT (WT 112);


(x) Tung Chung FWSR (SR 200);(y) Upper Keung Shan FWBPT (WT 113); and(z) Wong Kung Tin FWT (WT 049).

2.3 The Kowloon East, Sha Tin, Yuen Long, Sheung Shui & Fanling and Islands MSZs are hereafter referred to as the Project Study Area. The general layouts of the Project Study Area are shown on Sketch Nos. SK 51048/1 to SK 51048/5 in Appendix I. The boundaries of the FWSR / FWT / FWBT / FWBPT / WTW SZs as shown on the sketches are indicative only and are subject to verification by the Consultants with the staff from relevant Regions of WSD in accordance with Clause 6.3(l) of this Brief.

2.4 The fresh water distribution systems in this Brief shall include all the distribution systems for temporary mains water for flushing such as those within the SZ of Wang Chau FWSR.

3. Objectives of the Assignment

3.1 The objectives of this Assignment are to develop network models and, by making use of the calibrated and validated network models with sufficient field test data and records available in WSD, to design the most appropriate PM and CM schemes for WSD’s fresh water distribution systems within the Project Study Area in order to reduce water leakage in long term.

4. Description of the Assignment

4.1 The Assignment shall cover, but not be limited to, the following major tasks:-

(a) to develop network models for WSD’s fresh water distribution systemswithin the Project Study Area;

(b) to design, supervise and carry out field works required for the calibration and validation of the constructed network models for the fresh water distribution systems within the Project Study Area;

(c) to design the most appropriate PM and CM schemes for the fresh water distribution systems within the Project Study Area by making use of the calibrated and validated network models; and

(d) to organise and give a 2-day presentation and/or demonstration, with presentation materials, to staff of WSD on the following:

i) the planning, construction, calibration and validation of the network models for operating and monitoring the performance of the fresh water distribution systems within the Project Study Area; and


ii) the design, establishment, use, operation and management of the PM and CM schemes formulated within the Project Study Area.

5. Deliverables

5.1 The Deliverables to be produced by the Consultants under this Assignment are as set out below:-

(a) Implementation Programme

The Consultants shall submit to the Director’s Representative (DR) for approval six (6) copies of the detailed and itemised programme of the Assignment (using SureTrak or other compatible software approved by the DR) in accordance with Clause 8 of this Brief.

(b) Progress Reports

The Consultants shall submit to the DR six (6) copies of the progress reports in accordance with Clause 9 of this Brief within the first five (5) working days of each month.

(c) Field Works Proposal for the Calibration and Validation of the Network Models

The Consultants shall submit to the DR for approval the draft Field Works Proposal in packages (number of packages to be determined by the Consultants) including detailed planning, design, calculations and programme for the field works. The Consultants shall submit six (6) copies of the draft Field Works Proposal for each package. The first package shall be submitted within three (3) months from the date ofcommencement of the Agreement, whereas the last package shall be submitted within seven (7) months from the date of commencement of the Agreement. The details of the field works are stipulated in Clause 6.3(u) of this Brief. The Consultants shall consult staff from relevant Regions and Customer Services (CS) Division of WSD on the Field Works Proposal. Upon receipt of the comments from the DR and relevant staff of WSD, the Consultants shall take into consideration these comments, revise the draft proposal and submit to the DR six (6) copies of the revised proposal and the responses to the comments received within two (2) weeks from the date of receipt of the comments.

(d) Field Data Reports

The Consultants shall submit to the DR two (2) copies of the field data report in accordance with Clause 6.3(u) of this Brief and records of the field data for each of the proposed monitoring points within the Project


Study Area within three (3) weeks from the date of completion of taking the measurements. The Consultants shall also submit to the DR two (2) copies of the summary report, when the accumulated percentage of the monitoring points in the submitted field data reports has reached or exceeded 20%, 40%, 60%, 80% and 100% respectively, within one (1)week upon submission of the field data reports.

(e) Preliminary Design of PM and CM Schemes

The Consultants shall submit to the DR for comments the preliminary design of PM and CM schemes for the fresh water distribution systems within the Project Study Area in nine (9) batches (Batch 0 to Batch 8). Batch 0 shall consist of the design methodologies, standards to be adopted in the design, all parameters and any other relevant informationnecessary for the preliminary design of the PM and CM Schemes. For Batch 1 to Batch 7, each batch shall consist of the preliminary design of PM and CM schemes for the fresh water distribution systems of ten (10) FWSR / FWT / FWBT / FWBPT / WTW SZs. Batch 8 shall consist of the preliminary design of PM and CM schemes for the fresh water distribution systems of the remaining FWSR / FWT / FWBT / FWBPT / WTW SZs. The Consultants shall submit batches in accordance with the programme in Clause 8 of this Brief. Each batch of submission shall contain seven (7) copies of the preliminary design of PM and CM schemes. The preliminary design shall include drawings, data necessary for the PM and CM schemes, and other information as may be required by the DR. The Consultants shall consult staff fromrelevant Regions and CS Division of WSD on the preliminary design of PM and CM schemes. Upon receipt of the comments from the DR and relevant staff of WSD, the Consultants shall take into consideration these comments, revise the preliminary design and submit to the DR seven (7) copies of the revised preliminary design and the responses to the comments received within one (1) month from the date of receipt of the comments.

(f) Technical Reports

The Consultants shall submit to the DR for approval the following reports in accordance with Clauses 6.4 and 6.5 of this Brief:

i) Technical Report No. 1

The Consultants shall submit to the DR six (6) copies of the draft Technical Report No. 1 on construction, calibration and validation of the network models within twenty (20) months from the date for commencement of the Agreement. The report shall be provided in separate volumes for different MSZs. Upon receipt of the comments from the DR, the Consultants shall take into consideration these comments, revise the report and submit to the DR six (6)


copies of the revised report and the responses to the comments received within one (1) month from the date of receipt of the comments.

ii) Technical Report No. 2

The Consultants shall submit to the DR six (6) copies of the draft Technical Report No. 2 on design of PM and CM schemes for the fresh water distribution systems within the Project Study Area by making use of the calibrated and validated network models within twenty six (26) months from the date for commencement of the Agreement. The report shall be provided in separate volumes for different MSZs. The Consultants shall again consult staff fromrelevant Regions and CS Division of WSD on the PM and CM schemes recommended in the report. Upon receipt of the comments from the DR and relevant staff of WSD, the Consultants shall take into consideration these comments, revisethe report and submit to the DR six (6) copies of the revised report and the responses to the comments received within one (1) monthfrom the date of receipt of the comments.

(g) Final Report

i) The Consultants shall submit to the DR for approval six (6) copies of the draft Final Report for the Assignment in accordance with Clause 6.6 of this Brief within twenty nine (29) months from the date of commencement of the Agreement. The report shall be provided in separate volumes for different MSZs.

ii) The report shall include all such plans, data and other documents as may be necessary or required by the DR for the examination and consideration of the study. Upon receipt of the comments from the DR, the Consultants shall take into consideration these comments, revise the report and submit to the DR six (6) copies of the revised draft Final Report and the responses to the comments received within one (1) month from the date of receipt of the comments.

iii) Within one (1) month from the date of agreement on the revised draft Final Report by the DR, the Consultants shall submit to the DR seven (7) bound copies and one (1) unbound copy of the Final Report.

(h) Paperless Final Report (in HTML format)

The Consultants shall submit to the DR two (2) copies of the paperless Final Report together with the Final Report in accordance with Clause 6.7 of this Brief. The Consultants shall prepare the paperless report on


interactive compact discs (CDs) approved by the DR and shall assist to upload the paperless report to the WSD’s Intranet System.

(i) Executive Summary

The Consultants shall submit to the DR for approval seven (7) copies of the draft Executive Summary (both English and Chinese versions) in accordance with Clause 6.8 of this Brief within twenty nine (29) months from the date of commencement of the Agreement. Upon receipt of the comments from the DR, the Consultants shall take into consideration these comments, revise the draft Executive Summary and submit to the DR ten (10) copies of the revised Executive Summarywithin two (2) weeks from the date of receipt of the comments. Within two (2) weeks from the date of agreement on the revised Executive Summary by the DR, the Consultants shall submit to the DR ten (10) copies of the final Executive Summary.

(j) Records of Meetings and Correspondence

The Consultants shall prepare and submit to the DR for retention one (1)copy of the minutes of the meetings attended by the Consultants or convened by the DR and the correspondence with others in connection with the services provided under Clause 6 of this Brief within five (5) working days after the meetings.

5.2 The Consultants shall submit soft copies in duplicate on CDs approved by the DR the endorsed, approved or final versions of the documents, reports, programs, databases, plans, drawings, records, etc., of all Deliverables listed in, but not limited to, Clause 5.1 of this Brief. The Consultants shall clearly label on the surface of the CDs a description of the documents stored and provide the source computer programs used on the CDs. The soft copy of each Deliverable shall comprise the files in the original formats and a combined file in portable document format (pdf). The original formats of the submissions shall include, but not be limited to, the following:-

(a) all network models (using InfoWater, H2OMAP or other compatible softwares approved by the DR) constructed under this Assignment;

(b) all drawings (in AutoCAD and SHAPE formats, or using other compatible softwares approved by the DR) produced under this Assignment;

(c) all photographs (in JPEG or other compatible format approved by the DR) taken under this Assignment;

(d) all reports and documents (using Microsoft Office or other compatible softwares approved by the DR) produced under this Assignment; and


(e) all Implementation Programmes (using SureTrak or other compatible softwares approved by the DR) produced under this Assignment.

5.3 The Consultants shall provide any other reports, papers, submissions, programmes, estimates, calculations, certificates, plans, drawings and any other documents in connection with the Assignment as required by the DR.

5.4 The Consultants shall keep one set of all correspondence in relation to the

Assignment. Upon request of the DR, the Consultants shall submit to the DR a copy of the correspondence, which should be properly filed, classified and indexed to enable easy reference, search and retrieval of information.

5.5 The Consultants shall draw the Employer’s attention to any Deliverables that are under license and any pre-existing copyright or patent on any Deliverables and any other restriction whatsoever affecting the Employer’s use of the same and, if required by the DR, to verify and establish the existence of any license, copyright, patent or restriction.

5.6 Drawings shall be prepared by Computer-Aided-Drafting (CAD) in AutoCAD DXF or DWG format conforming to the CAD Standard for Works Projects version 1.03.00 (or later versions as agreed between the Employer and the Consultants from time to time) as posted on the following link of theDevelopment Bureau’s web site:http://www.devb.gov.hk/en/construction_sector_matters/electronic_services/cad_standard/computer_aided_drafting/cad/index.html

6. Services to be provided by the Consultants

6.1 The duties of the Consultants shall be as defined in the GCE and SCE and as amplified, extended and set out in this Brief.

6.2 The services to be rendered by the Consultants comprise all necessary review, investigation, studies, design work, field works, construction of network models and associated calibration and validation, co-ordination, consultation, contract administration, site inspections, site supervision and provision of advices to achieve the objectives of the Assignment as set out in Clause 3 of this Brief.

6.3 To meet the objectives of the Assignment, the Consultants shall provide the following services:

(a) to draw the attention of the DR to any legal implications and consequences arising from or in relation to the Assignment;

(b) to make their own arrangements to obtain information necessary for the completion of the Assignment;


(c) to make suitable arrangements to gain access to any public and/or private estates for carrying out all the works under the Assignment including the provision of any necessary lighting, signing, guarding and security measures for the equipment used for the works under the Assignment;

(d) to consult, liaise and coordinate with the following authorities/departments and any others that have an interest in or an effect on or which are affected by the Assignment, pursuant to the requirements of Clause 19 of the GCE:

i) Agriculture, Fisheries and Conservation Department (AFCD);

ii) Antiquities and Monuments Office of Leisure and Cultural Services Department (AMO);

iii) Architectural Services Department (ArchSD);

iv) Buildings Department (BD);

v) Bus Companies;

vi) Civil Engineering and Development Department (CEDD), including Geotechnical Engineering Office (GEO);

vii) District Councils of Home Affairs Department (DC);

viii) District Lands Offices of Lands Department (DLO);

ix) District Offices of Home Affairs Department (DO);

x) District Survey Offices of Lands Department (DSO);

xi) Drainage Services Department (DSD);

xii) Environmental Protection Department (EPD);

xiii) Fire Services Department (FSD);

xiv) Food and Environmental Hygiene Department (FEHD);

xv) Government Property Agency (GPA);

xvi) Government Laboratory (GL);

xvii) Government Logistics Department (GLD);

xviii) Government Secretariat: Development Bureau (DevB);

xix) Government Secretariat: Environmental Bureau (EnB);

xx) Government Secretariat: Food and Health Bureau (FHB);

xxi) Government Secretariat: Home Affairs Bureau (HAB);

xxii) Government Secretariat: Transport and Housing Bureau(THB);


xxiii) Highways Department (HyD);

xxiv) Housing Department (HD);

xxv) Hong Kong Police Force (HKPF);

xxvi) Hong Kong Observatory (HKO);

xxvii) Lands Department (Lands D);

xxviii) Leisure and Cultural Services Department (LCSD);

xxix) Planning Department (Plan D);

xxx) Transport Department (TD);

xxxi) Water Supplies Department (WSD);

xxxii) CLP Power Hong Kong Ltd. (CLP);

xxxiii) Hongkong Electric Co. Ltd. (HEC);

xxxiv) Hong Kong and China Gas Co. Ltd. (HKCG);

xxxv) Hong Kong Cable Television Ltd. (HKCT);

xxxvi) Hong Kong Tramways Ltd (HKT);

xxxvii) Mass Transit Railway Corporation Ltd. (MTRC);

xxxviii) PCCW-HKT Ltd.;

xxxix) All other relevant utility companies and relevant government departments/offices; and

xl) Other consultants and contractors in connection with the Assignment.

(e) to identify, communicate with, liaise with and correspond directly to the bodies, departments, organizations and persons, etc. from whom useful information would be obtained in connection with and for the implementation of the Assignment, copy such correspondence and refer any problems in communication or liaison to the DR;

(f) to circulate and collect plans, papers and reports necessary for the

completion of the Assignment and submit the circulation list to the DRfor agreement;

(g) to comply with all reasonable instructions from the DR and with all relevant circulars, WSD’s departmental instructions (DIs) and technical memoranda as directed by the DR;

(h) to take cognizance of the current version of all relevant procedures,

manuals, circulars, handbooks, standards, guidelines and documents in use by the Employer including, but not limited to, the following in the provision of their services:


Item Title Issuing Authorityi) Project Administration Handbook for Civil

Engineering WorksCEDD

ii) Standard Drawings CEDDiii) Technical Circulars/Memoranda CEDDiv) Sewerage Manual DSDv) Standard Drawings DSDvi) Stormwater Drainage Manual DSDvii) Technical Circulars/Memoranda DSDviii) EACSB Circulars EACSBix) Handbook on Selection, Appointment and

Administration of Engineering and Associated Consultants and Amendments by Engineering and Associated Consultants Selection Board

EACSB

x) Code of Practice on Monitoring and Maintenance of Water-carrying Services Affecting Slopes

The thenETWB

xi) Construction Site Safety Handbook DevBxii) Construction Site Safety Manual DevBxiii) Public Works Department, Lands and Works

Branch, Works Bureau, Environmental, Transport and Works Bureau and Development Bureau Technical Circulars

DevB

xiv) Relevant Technical Circulars and Technical Guidance Notes

GEO

xv) General Specification for Civil Engineering Works

HKSARG

xvi) Standard Methods of Measurement for Civil Engineering Works

HKSARG

xvii) Stores and Procurement Regulations HKSARGxviii) Code of Practice for the Lighting, Signing and

Guarding of Road WorksHyD

xix) Guidelines on Traffic Impact Assessment and Day-time Ban Requirements for Road Works on Traffic Sensitive Routes

HyD

xx) Standard Drawings HyDxxi) Technical Circulars/Memoranda HyDxxii) Hong Kong Planning Standards and Guidelines Plan Dxxiii) Professional Persons Environmental

Consultative Committee (Pro PECC) Practice Notes

Plan D

xxiv) Planning, Environmental and Lands Bureau(Branch), Planning and Lands Bureau andHousing, Planning and Lands Bureau Technical Circulars

The thenHPLB

xxv) Transport Planning and Design Manual TD


Item Title Issuing Authorityxxvi) Civil Engineering Design Manual WSDxxvii) Departmental Instructions WSDxxviii) Project Administration Manual for Engineering

WorksWSD

xxix) Manual of Mainlaying Practice WSDxxx) Safety Manual WSDxxxi) Standard Drawings for Civil Engineering

WorksWSD

(i) to comply with the requirements of all relevant ordinances andregulations including, but not limited to, the following in their provision of the services:

i) Air Pollution Control Ordinance;

ii) Animals and Plants (Protection of Endangered Species) Ordinance;

iii) Antiquities and Monuments Ordinance;

iv) Buildings Ordinance;

v) Copyright Ordinance;

vi) Country Park Ordinance;

vii) Dangerous Goods Ordinance;

viii) Electricity Ordinance;

ix) Environmental Impact Assessment Ordinance;

x) Factories and Industrial Undertakings Ordinance;

xi) Gas Safety Ordinance;

xii) Lands (Resumption) Ordinance;

xiii) Lands (Miscellaneous Provisions) Ordinance;

xiv) Noise Control Ordinance;

xv) Occupational Safety and Health Ordinance;

xvi) Roads (Works, Use and Compensation) Ordinance;

xvii) Road Traffic Ordinance;

xviii) Town Planning Ordinance;

xix) Waste Disposal Ordinance;

xx) Waterworks Ordinance;

xxi) Water Pollution Control Ordinance; and

xxii) Any other Ordinance having a bearing on the works of the


Assignment.

(j) to take cognizance of reports, working papers and other documents produced under, but not be limited to, the following studies by WSD and other government departments in their provision of the services:

i) Agreement No. CE 21/93 “A Study on Effective Leakage Reduction and Control for the Supply and Distribution System Operated by the Water Supplies Department”;

ii) Agreement No. CE 91/2001 (WS) “Study on Pressure Management and Remote Monitoring & Supervisory Control of the Fresh Water Distribution Systems of the North Point and Shau Kei Wan Service Reservoir Supply Zones – Investigation”;

iii) Service Order No. D886805 “Pressure Management Study for

Fung Wong and Kennedy Town Fresh Water Service Reservoir Supply Zones”;

iv) Service Order No. E788365 “Study on Pressure Management of the Fresh Water Distribution Systems of the Tsuen Wan East Major Supply Zone”;

v) Service Order No. E788385 “Study on Pressure Management of the Fresh Water Distribution Systems of the Western Major Supply Zone”;

vi) Service Order No. E976121 “Study on Pressure Management of the Fresh Water Distribution Systems of the Kowloon Central Major Supply Zone”;

vii) Agreement No. CE 60/2006 (WS) “Pressure Management of the Fresh Water Distribution Systems of the Central, Eastern, Sai Wan and Kowloon West Major Supply Zones – Investigation”;

viii) Agreement No. WSD 1/2008 “Implementation of Pressure Management and District Metering for the Fresh Water Distribution Systems of Kowloon Central Major Supply Zone –Design and Construction”;

ix) Agreement No. CE 23/2008 (WS) “Pressure Management of the

Fresh Water Distribution Systems of the Tsuen Wan West, Tuen Mun, Sai Kung, Aberdeen and Red Hill Major Supply Zones –Investigation;

x) Agreement No. CE 1/2010 (WS) “Implementation of Pressure Management and District Metering for the Fresh Water


Distribution Systems of the Western, Central, Eastern, Sai Wan, Kowloon West and Tsuen Wan East Major Supply Zones –Design and Construction”;

xi) Agreement No. CE 61/2007 (CE) “North East New Territories

New Development Areas Planning and Engineering Study –Investigation”;

xii) Planning Report No. 10/95 “Tan Kwai Tsuen South Fresh Water

Service Reservoir Stage II and Additional Trunk Transfer Facilities between Yuen Long and Tuen Mun”;

xiii) Planning Report No. 10/2000 “Water Supply to Housing

Developments in Areas 34 and 52, Sha Tin”;

xiv) Planning Report No. 3/2010 “Addendum to Planning Report No. 9/2000 Water Supply to North Tuen Mun”; and

xv) Planning Report No. 2/2011 “Water Supply to Kai Tak Development”.

(k) to take cognizance of, but not be limited to, the following WSD’s

documents and international publications in their provision of the services:

i) “Guidelines for Hydraulic Modelling (2007)” issued by Development (2) Division of WSD;

ii) “Network Analysis – A Code of Practice” issued by Water Research Centre;

iii) “The Manager’s Non-Revenue Water Handbook – A Guide to Understanding Water Losses” issued by United States Agency for International Development and Ranhill Utilities Berhad;

iv) “Losses in Water Distribution Networks – A Practitioner’s Guide to Assessment, Monitoring and Control” issued by International Water Association;

v) “Departmental Instruction No. 1309 – Design Criteria” issued by WSD;

vi) “Brief Notes on the Common Design Criteria for Waterworks Installations in Hong Kong” issued by WSD;

vii) “Review of Planning Standards – Part 2 : Flow Velocity in Water Mains” issued by Development (2) Division of WSD; and


viii) “List of Essential Installations” issued by Customer Services Branch of WSD.

(l) to identify all the cut-line valves of the FWSR / FWT / FWBT / FWBPT/ WTW SZs within the Project Study Area and verify the accuracy of the boundaries of these SZs as shown on Sketch Nos. SK 51048/1 to SK 51048/5 with relevant Regional staff of WSD on site, taking account of all possible changes to the cut-line valves, SZ boundaries, foreseeable shifting of the FWSR / FWT / FWBT / FWBPT / WTW SZs in future due to operation requirements or planned developments, and cross-connections between the SZs etc., including, but not limited to,the following SZs:

i) Lion Rock High Level and Lion Rock High Level No. 2 FW Primary SRs SZ, Diamond Hill No. 2 FWSR SZ and Ngau Chi Wan FWSR SZ in Kowloon East MSZ:

The boundaries of these SZs are subject to changes due to the operational requirements for the implementation of the Kai Tak Development Project and the implementation of the Agreement No. WSD 1/2008. The Consultants shall liaise with relevant staff of WSD to obtain the latest information on the boundaries of these SZs and the corresponding changes in the SZ boundaries of the adjacent SZs including Tsz Wan Shan FWSR SZ, Ngau Chi Wan High Level FWSR SZ and Choi Wan Road FWSR SZ. References should be made to the Planning Report No. 2/2011 –Water Supply to Kai Tak Development, and the reports under the Agreement No. WSD 1/2008 – Implementation of Pressure Management and District Metering for the Fresh Water Distribution Systems of Kowloon Central Major Supply Zone –Design and Construction; and

ii) Tan Kwai Tsuen South FWSR SZ in Yuen Long MSZ:

This FWSR will be commissioned in mid-2011. The Consultants shall liaise with relevant staff of WSD to obtain the latest SZ boundary of this FWSR and the corresponding changes in the SZ boundaries of the adjacent SZs including Tan Kwai Tsuen North FWSR SZ, Yuen Long FWSR SZ and Ngau Tam Mei FW Primary SR SZ, and Tuen Mun North FWSR SZ under the Agreement No. CE 23/2008 (WS). References should be made to the Planning Report No. 10/95 – Tan Kwai Tsuen South Fresh Water Service Reservoir Stage II and Additional Trunk Transfer Facilities between Yuen Long and Tuen Mun, Planning Report No. 3/2010 –Addendum to Planning Report No. 9/2000 Water Supply to North Tuen Mun, and the reports under the Agreement No. CE 23/2008 (WS) – Pressure Management of the Fresh Water Distribution


Systems of the Tsuen Wan West, Tuen Mun, Sai Kung, Aberdeen and Red Hill Major Supply Zones – Investigation.

The cost arising from the differences between the verified boundaries of the SZs and the boundaries as shown on Sketch Nos. SK 51048/1 to SK 51048/5 and arising from the future shifting of SZs and changes in the boundaries of SZs shall be deemed to be included in the Lump Sum stipulated in Clause 2 of the Schedule of Fees;

(m) to verify on site the water mains details including quantities, sizes, alignments, etc., taking account of possible changes to the water mains details. There may be additional or missing water mains identified in the FWSR / FWT / FWBT / FWBPT /WTW SZs. The Consultants shall provide all the verified information, which is deviated from the Mains Record Plans (MRPs) of WSD, to the DR and assist in updatingthe MRPs. The cost arising from any differences between the verified water mains details and those as shown on the MRPs shall be deemed to be included in the Lump Sum stipulated in Clause 2 of the Schedule of Fees;

(n) to collect and review all existing relevant drawings, plans, information from the Supervisory Control and Data Acquisition (SCADA) System of WSD, water supply and consumer data, etc. in building up the network models for the fresh water distribution systems within the Project Study Area. The Consultants shall carry out detailed screening and verification of the data collected (including, but not limited to, billed consumption and geo-reference data) and take necessary action to rectify the anomalies found in the data. The Consultants shall also consult the Planning Section of Development (2) Division of WSD to assess the future water demand on and effects of any planned WSD’s works by the proposed PM and CM schemes within the Project Study Area;

(o) to take cognizance of the list of LHEs given in Appendix II in thedesign of the CM schemes. The list of LHEs is provided for reference only. The cost arising from any change in the list of LHEs shall be deemed to be included in the Lump Sum stipulated in Clause 2 of the Schedule of Fees. The Consultants shall consult staff from CS Division of WSD and if necessary, the management companies of the LHEs to collect and verify on site details of the existing inside servicesand the inlet water mains for providing water supply to the LHEs,determine the numbers of DMAs and numbers of DMA chambers for the housing estates and the feasibility and cost-effectiveness of implementing pressure management, taking account of the pressure and availability of space on site;

(p) to consult staff from relevant Regions and CS Division of WSD and toconduct site surveys, inspections and investigations to gather


information on customers and buildings requiring exceptionally high water supply pressure and on areas with problems of low or unstablewater supply pressure;

(q) to consult staff from relevant Regions and CS Division of WSD and to conduct site surveys, inspections and investigations to buildings with direct water supply and gather information of the water pressure required by the buildings;

(r) to consult staff from relevant Regions, Leakage Management (LM) Section and Leakage Detection Unit (LDU) of WSD, to collect information (including, but not limited to, flow and pressure data, boundaries, etc.) of all the existing and planned Waste Detection Areas (WDAs), District Metering Areas (DMAs) and Pressure Management Areas (PMAs) within the Project Study Area, to conduct site surveys, inspections and investigations on the existing installations, equipmentand chambers, and to assess the suitability of these installations,equipment and chambers for use in the field works and the design of PM and CM schemes. A list of the existing and planned WDAs, DMAs and PMAs within the Project Study Area is given in Appendix III for reference. The cost arising from any changes in the list shall be deemed to be included in the Lump Sum stipulated in Clause 2 of the Schedule of Fees;

(s) to conduct site visits and take measurements to obtain any missing water supply and consumer data and to verify any ambiguous or incorrect data necessary for building up the network models for the fresh water distribution systems within the Project Study Area. The Consultants shall provide all the missing and corrected data to the DR and assist in updating the relevant WSD’s records;

(t) to develop network models using InfoWater, H2OMAP or other compatible softwares approved by the DR for establishing new DMAs and PMAs for the fresh water distribution systems within the Project Study Area. The Consultants shall clearly demonstrate the methodologies for the determination of the average flows, peak hour factors, minimum hour factors and diurnal patterns to be adopted in the network models and carry out analysis including, but not limited to, steady state analysis and extended period simulation covering a period of 24 hours to cover various flow scenarios including, but not limited to, (i) peak flow, (ii) average flow plus fire flows and (iii) minimum flow;

(u) to plan, design, carry out and supervise the field works for calibration and validation of the network models for WSD’s fresh water distribution systems within the Project Study Area, including, but not limited to, the following:

i) to design and propose the numbers and locations of the pressure


monitoring points within the Project Study Area for taking sufficient measurements and records of the field data to enable the calibration and validation of the network models. For those SZs having only a few or no existing fire hydrants for pressure monitoring, the Consultants shall propose the numbers, locationsand details of temporary pressure tapping points. The Consultants shall also liaise with Regional staff of WSD, supervise and issue works orders to the term contractors for the construction of the proposed temporary pressure tapping points. The minimum numbers of the pressure monitoring points (including the temporary pressure tapping points) for each MSZ are specified in the table below:

MSZ

Minimum no. of pressuremonitoring points (including

temporary pressure tapping points) for each MSZ

Kowloon East 231Sha Tin 309Yuen Long 698Sheung Shui & Fanling 567Islands 290

Total 2095

If the field works are conducted with the numbers of pressure monitoring points less than the specified minimum numbers of pressure monitoring points for each MSZ, payment for the field works will be deducted on a pro-rata basis from item 3(v) of the Schedule of Fees. No additional payment will be made if the numbers of pressure monitoring points in the field works exceed the specified minimum numbers for the MSZs;

ii) to design and propose the numbers and locations of the flow monitoring points within the Project Study Area, particularly at those FWSRs / FWTs / FWBTs / FWBPTs / WTWs with no outlet flowmeters and at flow measurement chambers (for insertion type flowmeters), for taking sufficient measurements and records of the field data to enable the calibration and validation of the network models;

iii) to design, propose and identify the types, specifications and quantities of the field equipment (which shall itself be calibrated and tested at frequent intervals and shall include, but not be limited to, data loggers, insertion type flowmeters and ultrasonic flowmeters) required for monitoring the flows and pressures at the proposed monitoring points of the fresh water distribution systems;


iv) to carry out site inspections prior to installation of the field equipment to confirm the suitability of the proposed monitoring points and types of field equipment to be used;

v) to identify all the existing facilities, installations and rights that may be affected by the field works, and to advise the DR of any necessary measures to minimise the effects;

vi) to liaise with the concerned government departments and parties and to obtain permission for carrying out the field works at the proposed monitoring points, and to incorporate any specific requirements in the field works;

vii) to provide and install the field equipment and take measurements and records of the field data at the proposed monitoring points of the fresh water distribution systems within each of the FWSR / FWT / FWBT / FWBPT / WTW SZ within the Project Study Area covering a minimum monitoring period of seven (7) continuous days in order to calibrate and validate the network models, using, but not limited to, extended period simulation;

viii) to uninstall and remove the field equipment and reinstate the original conditions upon completion of taking measurements and records of the field data;

ix) to monitor, check and analyse the field data recorded by the field equipment on a daily basis throughout the monitoring period in order to ensure that the data is suitable for use in calibration and validation of the network models;

x) to extend the monitoring period and carry out further field works at their own costs in order to rectify any discrepancies, errors or anomalies found in the field data or to comply with the requirements for the calibration and validation of the network models. Extended monitoring or repeated monitoring at the same monitoring point shall not be considered as an extra monitoring point in the calculation of the minimum numbers of monitoring points;

xi) to prepare and submit to the DR for approval a field works proposal before the carrying out of the field works including detailed planning, design, calculations and programme of the field works required for the calibration and validation of the network models;

xii) to make arrangements for gaining access to any private lots, public housing estates, waterworks installations, etc;


xiii) to carry out all necessary surveys, leveling and sounding, including, but not limited to, surveys of the ground levels at the proposed monitoring points;

xiv) to carry out all necessary site investigations, sounding and visual inspection (SVI), flow and pressure measurements to verifywhether the cut-line valves for the FWSR / FWT / FWBT / FWBPT / WTW SZs are fully closed and without letting-by, and to liaise with relevant Regional staff of WSD to ensure that the cut-line valves are maintained in the fully closed status during the monitoring period;

xv) to prepare and submit to the DR field data reports on the details of the field data obtained at each monitoring point within three (3) weeks after completion of taking the measurements and records of the field data at the monitoring point. The field data reports shall contain a table showing the information including, but not limited to, ground level, daily maximum pressures / flows, daily average pressures / flows and daily minimum pressures / flows of each monitoring point, and the top water level and invert level of the FWSR / FWT / FWBT / FWBPT / WTW of the SZ being involved;

xvi) to prepare and submit to the DR a summary report listing all the monitoring points with completed field data reports when the accumulated percentage of the monitoring points in the submittedfield data reports has reached or exceeded 20%, 40%, 60%, 80% and 100% respectively;

xvii) to carry out detailed screening and verification of the field dataand take necessary actions to rectify the anomalies found in the data for the calibration and validation of the network models; and

xviii) to identify hydraulic anomalies such as local large headlosses by field investigations and remove such anomalies before proceeding further with the design.

(v) to calibrate the network models and validate the calibrated network models using the screened and verified data obtained from the field works and those from the SCADA System of WSD, and the flow and pressure data obtained from the existing DMAs and PMAs;

(w) to prepare and submit to the DR the report on the calibration and validation of the network models, which shall include, but not be limited to, the method used, results, findings and conclusions of the field works;

(x) to design the PM and CM schemes including, but not limited to, the


following:

i) to advise the criteria, procedures, standards, design methodology, all parameters and any other relevant information to be adopted in the design;

ii) to review the present zoning of all the SZs within the Project Study Area using the calibrated and validated network models for the fresh water distribution systems within the Project Study Area and to advise, if necessary, modifications to optimise the operational efficiency;

iii) to design the most appropriate PM and CM schemes fulfilling the following requirements:

1) take account of all the existing and planned WDAs, DMAsand PMAs. The Consultants shall make use of the flow and pressure data arising from the existing DMAs and PMAs to derive the diurnal patterns and other information necessary to be adopted in the network models;

2) review the feasibility and propose the methods of converting any existing and planned WDAs into DMAs;

3) review all the existing and planned DMAs and PMAs and prepare any alternative proposals which are considered to be more favorable than the existing and planned ones;

4) minimise the number and size of district boundary valves(DBVs), flowmeters (FMs) and pressure reducing valves (PRVs) as far as possible. The Consultants shall locate the DBVs in such a way so as to minimise the extent of dead end mains and maintain the dual supply arrangement of the fire service mains to buildings;

5) miminise the number of compartments to be formed within the fresh water distribution networks;

6) check the conditions of the existing WDA, DMA and PMA chambers and associated installations and equipment on site and review the feasibility of making use of these chambers, installations and equipment in the PM and CM schemes, including design and identification of any modification works required on the chambers;

7) minimise disturbance of existing flow patterns within the fresh water distribution networks;


8) take account of the operational requirements especiallywhen dealing with emergency situations as stipulated in Clause 6.5(i) of this Brief;

9) take account of the fire fighting requirements; and

10) take account of the programmed Replacement and Rehabilitation (R&R) of Water Mains or other WSD New Works projects within the Project Study Area.

iv) to demonstrate the suitability and cost-effectiveness of the PM and CM schemes using the calibrated and validated network models for the fresh water distribution systems within the Project Study Area;

v) to recommend the optimal locations, sizes and types of monitoring and control equipment and data logging devices for the FMs, PRVs and critical pressure points (CPPs), with provision and review on the specifications for each type of equipment to be used, in the PM and CM schemes;

vi) to provide data for individual DMAs and PMAs, including, but not limited to, boundaries of the DMAs/PMAs, locations of the proposed DBVs, DMA and PMA chambers and CPP pits, total number of services connections (e.g. domestic and commercialconnections), total number of active consumer accounts/service points, separate lengths of distribution water mains maintained by WSD, private mains and water mains maintained by othergovernment departments, presence and suitability of salt water supply system and major type of land use (i.e. residential or industrial use) for fire fighting analysis, large consumers identified, total water consumption, background losses, leakages before and after the implementation of the PM schemes, quantity in water saving, and flow and pressure data at essential locations. The Consultants shall advise and review from time to time the methodology adopted, which is reasonably applicable to the hilly and densely populated conditions in Hong Kong, for the calculation of the background loss, leakage and quantity in water saving;

vii) to design the CM schemes for the LHEs within the Project Study Area and assess the feasibility and cost-effectiveness of implementing pressure management;

viii) to recommend details of the field investigations, tests and operation procedures required for establishing the DMAs and PMAs;


ix) to submit the preliminary design of PM and CM schemes in batches and submit the revised preliminary design of PM and CM schemes after consultation with the DR and staff from relevant Regions and CS Division of WSD in accordance with Clauses 5.1(e) of this Brief; and

x) to submit the design of PM and CM schemes in Technical Report No. 2 using the calibrated and validated network models, and submit the revised design of PM and CM schemes after consultation with the DR and staff from relevant Regions and CS Division of WSD in accordance with Clauses 5.1(f)(ii) of this Brief.

(y) to prioritise the construction sequence of the proposed DMA and PMA chambers and CPP pits and implementation sequence of establishing the proposed PM and CM schemes in accordance with the criteria which are to be determined by the Consultants and agreed by the DR, and to establish programmes for the construction works and subsequent monitoring works by WSD on leakage, flow and pressure of all the proposed DMAs and PMAs in the fresh water distribution systemswithin the Project Study Area;

(z) to collect relevant operational and updated financial data from WSD for detailed analysis to demonstrate the suitability and cost-effectiveness of the recommended PM and CM schemes;

(aa) to provide methodologies for the review of the performance of the recommended PM and CM schemes;

(ab) to prepare an Operational Manual for the operation and management ofthe PM and CM schemes within the Project Study Area;

(ac) to establish detailed procedures for updating the network models to take account of the flow and pressure data arising from the establishment of DMAs and PMAs within a SZ;

(ad) to identify any interface between the construction works of the recommended PM and CM schemes and the programmed R&R of Water Mains or other WSD New Works projects within the Project Study Area;

(ae) to organise and give a 2-day presentation and/or demonstration, with presentation materials, to staff of WSD on the following:

i) the planning, construction, calibration and validation of the network models for operating and monitoring the performance of the fresh water distribution systems within the Project Study Area; and


ii) the design, establishment, use, operation and management of the PM and CM schemes formulated within the Project Study Area.

The presentation and/or demonstration aims at transfer of knowledge and technology to staff of WSD. The presentation and/or demonstration shall cover construction of network models, demand analysis and allocation, calibration and validation of the developed network models, and performance of the distribution systems before and after implementation of the recommended PM and CM schemes. The Consultants shall submit the presentation and/or demonstration materials and handouts to the DR for agreement at least two (2) weeks before the presentation and/or demonstration.

(af) to prepare and submit the Deliverables in accordance with the timing and the quantities as stipulated in Clause 5 of this Brief;

(ag) to prepare and submit the Implementation Programme in accordance with Clause 8 of this Brief;

(ah) to prepare and submit the progress reports and expenditure forecasts in accordance with Clause 9 of this Brief;

(ai) to advise the DR in writing immediately upon the identification of any potential slippage in progress or potentially significant cost deviation and propose necessary measures to restore the progress and to control the expenditure;

(aj) to attend the progress meetings at monthly intervals or at such other intervals as required by the DR;

(ak) to attend working group meetings, liaison meetings and other meetings as required for the completion of the Assignment or as instructed by the DR;

(al) to provide any information related to the Assignment as may from time

to time be required by the DR; and

(am) to provide Chinese translation of the Executive Summary referred to in Clause 5.1(i) of this Brief. The translation shall be carried out by competent translators or translation firms. The translation should be of reasonable quality in rhetoric and phraseology to convey precisely the original meaning of the English version.

6.4 The Technical Report No. 1 on network model construction, calibration and validation for the fresh water distribution systems within the Project Study Area shall include, but not be limited to, the following:

(a) the softwares used in constructing the network models;


(b) the methodologies considered suitable for network model construction and the methodologies recommended for use in this Assignment;

(c) the network model construction;

(d) the data needed for running, calibrating and validating the network models upon screening, verification and rectification of any anomalies found in the data;

(e) the details of the field works including, but not limited to, the results, findings and conclusions of the field works;

(f) the details of the calibration of the network models and validation of the calibrated network models, which shall include, but not be limited to, the accuracy standards and methodologies adopted, the methods used, results and findings;

(g) the constraints of the calibrated and validated network models;

(h) the user manuals on how to use, maintain and update the calibrated and validated network models, including, but not limited to, the detailed procedures for updating the network models to take account of the flow and pressure data arising from the establishment of DMAs and PMAs within a SZ; and

(i) other aspects as required by the DR.

6.5 The Technical Report No. 2 on the design of PM and CM schemes for the fresh water distribution systems within the Project Study Area shall include, but not be limited to, the following:

(a) the recommendations on the most appropriate and cost-effective PM andCM schemes based on the findings in the Technical Report No. 1;

(b) the review of the monitoring and control equipment and facilities, with provision and review on the specifications for each type of equipment to be used, the recommendations of the best locations for installation of FMs, PRVs and CPPs, and the suitable locations for construction of the DMA and PMA chambers and CPP pits for the PM and CM schemes. The recommended locations of the DMA and PMA chambers and CPP pits should be feasible to be constructed on site, taking into consideration of various factors including, but not limited to, presence of existing utilities and impact to the traffic;

(c) a summary for the numbers of the existing and proposed DMAs, PMAs, DMA chambers, PMA chambers and CPP pits for each SZ;


(d) a summary for all the proposed works to be carried out and all the equipment to be installed which are necessary for implementation of the proposed PMAs/DMAs including, but not limited to, the identification numbers/names of the existing and proposed DMAs/PMAs and the associated FMs, PRVs and/or CPPs, types, sizes, coordinates and locations (i.e. street name with street number) of each installation for each DMA/PMA, the sizes of the distribution water mains connecting to the installation and suitability of the use of the existing WDA, DMA and PMA chambers and associated installations and equipment for each DMA/PMA within each SZ;

(e) the cost-effectiveness analysis for the recommended PM and CM schemes;

(f) the recommendations on the implementation details including, but not limited to, strategy, costs, priority of construction of the chambers and implementation of the PM and CM schemes, and programmes for the construction and subsequent monitoring works of the recommended PM and CM schemes;

(g) the methodologies for the review of the performance of the recommended PM and CM schemes;

(h) the recommendations on additional staff resources and recurrent costs required in the future operation and management of the PM and CM schemes;

(i) the Operational Manual for the operation and management of the recommended PM and CM schemes including contingency plans for every PM and CM scheme for maintaining water supply, particularly to those essential consumers as listed in the document mentioned in Clause 6.3(k)viii) of this Brief, in all possible cases of water main bursts and/or fire fighting within or outside the areas of the recommended PM and CM schemes, while maintaining the normal functioning of the PM and CM schemes concurrently as far as practicable. In addition to the independent DMAs/PMAs, the contingency plans shall describe in details the operational procedures/guidelines for the efficient operation of the DBVs between adjacent DMAs/PMAs, and cut-line valves between adjacent SZs during emergency situations, such as the event of having a fire and a water main burst at the same time, or when the need arises so as to minimise the timing and extent of supply interruption due to water mains bursts and/or other emergencies;

(j) the detailed DMA and PMA schematic diagram for each SZ, indicatingthe capacity, top water level and invert level of the concerned FWSR / FWT / FWBT / FWBPT / WTW, DMAs with sizes and identification numbers/names of the FMs, PMAs with sizes and identification numbers/names of the FMs and PRVs, distribution water mains with


pipe sizes and flow directions, DBVs and cut-line valves with valve sizes and associated valve numbers, and the operations of the DMAs and PMAs under normal circumstances and contingency situations; and

(k) other aspects as required by the DR. 6.6 The Final Report shall include, but not be limited to, the following:

(a) the background of the Assignment;

(b) the works carried out by the Consultants and the findings under the Assignment;

(c) the summary of the recommendations on the most appropriate PM and CM schemes developed for the Project Study Area;

(d) the cost estimates of the recommended PM and CM schemes;

(e) the detailed DMA and PMA schematic diagrams and the design drawings of the recommended PM and CM schemes, together with a drawing list showing the drawing numbers and drawing titles of all the design drawings;

(f) the detailed summaries of the interface between the construction works of the recommended PM and CM schemes and the programmed R&R of Water Mains or other WSD New Works projects within the Project Study Area. To facilitate early completion and commissioning of the recommended PM and CM schemes, the Consultants shall also propose in the summaries details on the amount of works which are feasible to be handed over to the R&R of Water Mains or other WSD New Works projects for site construction;

(g) the conclusions and the way forward of the Assignment; and

(h) other aspects as required by the DR.

6.7 The paperless Final Report (in HTML format) shall include, but not be limited to, the following:

(a) the program installed for easy uploading or installation of the paperless Final Report onto the WSD’s Intranet System;

(b) a hyperlinked series of documents that will guide the users to accessdocuments via an internet browser; and

(c) other aspects as required by the DR.


6.8 The Executive Summary shall be in both English and Chinese and include, but not be limited to, the following:-

(a) the background of the Assignment;

(b) the general description of the Assignment carried out by the Consultants;

(c) the major findings in the Assignment;

(d) the conclusions and the way forward; and

(e) other aspects as required by the DR. 6.9 After completion of this Investigation stage consultancy, the Consultants shall

be requested to answer any queries raised during the subsequent Design & Construction (DC) stage consultancy. The Consultants shall be paid on a time charge basis in addition to the lump sum fee for completion of the Investigation stage services provided that the DC stage consultancy is awarded to another consultant.

7. Response to Queries

7.1 The Consultants shall respond to queries raised under Clause 20 of the GCE up to a date three (3) months after the final submission of the Deliverables required under the Agreement. Such date shall be confirmed in writing to the Consultants by the DR.

8. Programme of Implementation

8.1 The due date for commencement of the Agreement is __________. The Assignment period is thirty-one (31) months, which may be extended subject to the agreement between the Consultants and the DR.

8.2 Pursuant to Clause 26(B) of the GCE, the Consultants shall submit the draft

Implementation Programme and the revised draft Implementation Programmeand the DR shall agree, or instruct, within the following periods:-

Submission of the draft Implementation Programme

: Within 2 weeks of the date for commencement of the Agreement

Agreement of the draft Implementation Programme

: Within 2 weeks from receipt of the draft programme or instruction for submission of the revised draft programme


Submission of the revised draft Implementation Programme

: Within 2 weeks from the instruction of the DR

8.3 The draft Implementation Programme and the revised draft Implementation Programme (hereafter referred to as Implementation Programmes) shall detail the activities and major tasks to be carried out, the target dates for the submissions of reports, the completion dates for major tasks and any decision dates that may be required for the uninterrupted progress of the Assignment. The Consultants shall discuss with the DR during the above periods to agree the activities, the major tasks and the timing of submissions of reports, other documents and plans for each of the main elements of the Assignment, for inclusion in the Implementation Programmes. The critical path(s) should be included and highlighted clearly in the Implementation Programmes. The Implementation Programmes shall include, but not be limited to, the following major tasks:-

(a) the commencement and completion of the construction of the network models;

(b) the submission of the draft and revised Field Works Proposal;

(c) the commencement and completion of the field works and surveys;

(d) the submission of the field data reports;

(e) the commencement and completion of the calibration and validation of the constructed network models;

(f) the commencement and completion of the design and establishment of

the PM and CM schemes;

(g) the submission of the Batch 1 to Batch 8 preliminary designs of the PM and CM schemes;

(h) the submission of the draft and revised Technical Report No. 1;

(i) the submission of the draft and revised Technical Report No. 2;

(j) the submission of the draft and revised Final Report;

(k) the submission of the draft, revised and final Executive Summary;

(l) the submission of the Paperless Report on the Project in HTML format; and

(m) other tasks necessary for the satisfactory completion of the Assignment.

8.4 The key dates of the major tasks referred to in Clause 8.3 of this Brief shall


include, but not be limited to:

Deliverable / Milestone

Key Date (from the date for commencement of the Agreement)

Submission of the first package of draft Field Works Proposal

3 months

Submission of the last package of draft Field Works Proposal

7 months

Submission of Batch 0 preliminary design of PM and CM schemes

4 months


6 months


7 months


8 months


9 months


10 months

Submission of Batch 6 preliminary design of PM andCM schemes

11 months


12 months


13 months


Deliverable / Milestone

Key Date (from the date for commencement of the Agreement)

Submission of draft Technical Report No. 1 20 months

Submission of draft Technical Report No. 2 26 months

Submission of draft Final Report 29 months

Submission of draft Executive Summary 29 months

8.5 The Implementation Programmes shall include a statement detailing the method of approach and the proposed allotment of resources for the timely and satisfactory completion of the major tasks and reports. The Consultants shall endeavour to ensure that the statement is followed throughout the Assignment.

8.6 In case an agreement cannot be arrived at between the DR and the Consultants regarding the completion date for any task, such completion date shall be reasonably fixed by the DR.

8.7 All works shall be completed within the duration of this Agreement unless

otherwise agreed by the DR. The Consultants shall use their bestendeavours to achieve completion within the Assignment period, taking account of the need in co-ordinating with other works contingent on this project and vice versa.

9. Progress Reports

9.1 The Consultants shall submit to the DR progress reports within the first five (5) working days of each month on all aspects of the Assignment covered in the Implementation Programmes referred to in Clause 8 of this Brief. The reports shall include a list of those items of the Assignment that are behind the Implementation Programmes together with proposals to expedite the progress,so as to complete the Assignment on time. The reports shall also include a financial statement of current and forecast expenditure in accordance with Clause 10 of this Brief. The content and form of such reports shall be subject to the satisfaction of the DR.

10. Financial Management

10.1 At monthly intervals or at such other intervals as the DR may require, the


Consultants shall submit reports on the current and forecast expenditure on the Assignment and the fees due to the Consultants, in a form to be agreed by the DR.

10.2 The Consultants shall prepare and update the cost estimates and expenditure

forecasts for the purpose of or in connection with the Assignment in accordance with the Project Administration Handbook for Civil Engineering Works.

11. Standards and Specifications

11.1 The Consultants shall adopt such technical and design standards and specifications as are in current use by WSD or, if non-existent, the British Standard Codes of Practice and Specifications. The Consultants shall submit recommendations on appropriate alternatives to the DR for agreement in the following cases:-

(a) if suitable standards or specifications do not exist;

(b) if current standards or specifications appear to require modification; and

(c) if, by the adoption of current standards or specifications, the Consultants would incur additional expenses not within reasonable contemplation.

12. Variations and Other Commitments

Not used.

13. Director’s Representative

13.1 The DR as defined in the GCE shall be the Assistant Director/Development of WSD or such other person as may be authorised by the Director of Water Supplies in writing and notified the Consultants. The DR may delegate any of the powers and functions vested in him to other officers. If the Consultants are dissatisfied with a decision or instruction of any such officer, the matter shall be referred to the DR for a ruling.

13.2 During the course of the Agreement, the Consultants shall report directly to the DR.

14. Control of the Project and Assignment

14.1 Pursuant to Clause 13 of the GCE, the Consultants shall attend meetings of


relevant committees, public consultation bodies and District Councils as necessary. The number of such meetings is estimated to be twenty-five (25) over which the Employer shall pay the extra cost on a time charge basis.

14.2 The Consultants when necessary shall communicate with and correspond directly to other Government departments/parties, utility undertakers and various divisions of WSD to obtain information in connection with the Project, copying such correspondence to the DR.

15. Information and Facilities Provided by the Employer

15.1 All available information relevant to the Assignment will be provided to the Consultants. All information relevant to the Assignment, where available, can be inspected at the office of the Development Branch of WSD by prior arrangement with the DR. The Consultants shall advise the DR those documents which they currently hold and those of which a copy may be needed. One (1) copy of each of the documents indicated as needed will be supplied free of charge by the DR on request from the Consultants, except those currently available from the Sales Section of the Information Services Department. In the case of plans and drawings, a soft copy of each plan or drawing shall be provided free of charge if requested by the Consultants.

16. Consultants' Office and Staffing

16.1 The Consultants shall maintain for the duration of this Agreement an office in Hong Kong under the control of the Project Director of the Consultants who shall be responsible for the Project. He shall have adequate authority and sufficient professional, technical and administrative support staff in all relevant disciplines and shall provide all specialist/sub-consultant services if necessary to ensure progress to the satisfaction of the DR and to ensure completion of the Assignment according to the Implementation Programmesreferred to in Clause 8 of this Brief.

16.2 The Consultants shall provide the staff and manpower input to the DR in accordance with the Technical Proposal submitted by the Consultants at the tender stage for this Assignment. The DR shall have the right to check the time-log record of the Consultants’ staff and specialists/sub-consultants deployed for this Assignment. The proposed core personnel shall include a Project Engineer who shall be a professionally qualified engineer with a minimum of 5 years waterworks and network modelling experience and shall be the contact person with WSD on all technical matters relating to the Assignment. The name and curriculum vitae of the Project Engineer shall be submitted to WSD for agreement.

16.3 At the commencement of the Assignment, the Consultants shall submit to the DR for approval a list of all professional and technical staff to be engaged in


the Assignment, with quantities of each type of staff equal to or more than those proposed in the Technical Proposal for the duration of this Agreement.If the DR considers that the performance of the Consultants is not satisfactory due to inadequate staffing and manpower input allocated to the Assignment, the Consultants shall, upon the request of the DR, forthwith submit to the DR the time-log record of the staff deployed for the Assignment for the DR to check against the Technical Proposal.

16.4 The Consultants’ failure to adhere to their staffing proposal, in particular the employment of core personnel of the Consultants and their sub-consultants, thus causing an adverse impact on the performance of the Assignment, shall be duly reflected in the Employer’s performance report on the Consultants.

16.5 If the Consultants are unable to provide or maintain any of the core personnel specified in the Technical Proposal for reasons beyond their control, theConsultants shall as soon as possible report this to the DR and propose, for the DR’s approval, a revised personnel arrangement which is equivalent to or better than the existing personnel arrangement, in term of qualifications, experience and competence.

17. Specialist and Sub-consultant Services

17.1 The Consultants shall provide all specialist and sub-consultant services required for the satisfactory completion of the Assignment. No additional fees or expenses for the provision of such services rendered locally or overseas shall be payable by the Employer except as otherwise provided for in the SoF.

17.2 Without derogating from the generality of clause 38(i) of the GCE, the Consultants shall, upon the award of this Agreement and save as otherwise agreed by the DR, appoint the sub-consultants as proposed in their Technical Proposal for the Assignment. The DR shall have the right to check thesub-consultancy agreements. If the DR considers that the performance of the Consultants is not satisfactory due to inadequate staffing and manpower input allocated to the Assignment, the Consultants shall, upon the request of the DR, forthwith submit to the DR a certified copy of any or all of the sub-consultancy agreements.

18. Surveys

18.1 One (1) velograph, or computer soft copy, and two (2) prints of topographical mapping at 1:20,000. 1:5,000 and 1:1,000 scales prepared by the Survey and Mapping Office of the Lands Department, where available, for the Project Study Area, can be obtained free of charge on application to the DR. The Consultants shall be responsible for any necessary updating and verification of the information shown on these maps.


18.2 All field survey works required for the proper execution of the Assignment shall be the duty of the Consultants unless otherwise provided for in the Agreement. A copy of field notes, field data and resultant plans arising from these surveys shall be handed over to the DR upon completion of the Assignment. The accuracy as well as the presentation of these surveys should be of a standard agreed by the DR.

18.3 Appendix IV specifies the division of responsibility for surveying among the

Consultants, WSD, the Lands Administration Office, and the Survey and Mapping Office as well as the relevant sub-offices at district level of the Lands Department.

19. Insurance

19.1 The amount of insurance cover to be maintained in accordance with Sub-clause (A) of Clause 47 of the GCE shall be twice the Lump Sum value of the fee, subject to a maximum of HK$75 million and a minimum of HK$5million.

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