A COMMERCIAL SCALE WIND TURBINE PILOT DEMONSTRATION …

A COMMERCIAL SCALE WIND TURBINEPILOT DEMONSTRATION

AT HEI LING CHAU

March 2006

PROJECT PROFILE

A COMMERCIAL SCALE WIND TURBINE PILOT DEMONSTRATION AT

HEI LING CHAU

CONTENTS

1 INTRODUCTION 1

2 BASIC INFORMATION 2

2.1 PROJECT TITLE 2 2.2 NAME OF PROJECT PROPONENT 2 2.3 NAME AND TELEPHONE NUMBER OF CONTACT PERSON 2 2.4 DESIGNATED PROJECT TO BE COVERED BY THE PROJECT PROFILE 2 2.5 PURPOSE AND NATURE OF THE PROJECT 2 2.6 PROJECT DESCRIPTION 2 2.7 PLANNING AND IMPLEMENTATION PROGRAMME 8

3 MAJOR ELEMENTS OF THE SURROUNDING ENVIRONMENT 9

4 POSSIBLE IMPACT ON THE ENVIRONMENT 10

4.1 CONSTRUCTION PHASE 10 4.2 OPERATIONAL PHASE 12

5 DESCRIPTION OF MITIGATION MEASURES 14

5.1 CONSTRUCTION PHASE 14 5.2 OPERATIONAL PHASE 15

6 USE OF PREVIOUSLY APPROVED EIA REPORTS 16


HEI LING CHAU

ENVIRONMENTAL RESOURCES MANAGEMENT CAPCO

1

1 INTRODUCTION

Castle Peak Power Company Limited (CAPCO), a joint venture between CLP

Power Hong Kong Limited (CLP) and ExxonMobil Energy Limited (EMEL),

recognises the Government of the Hong Kong Special Administrative Region

(HKSARG)’s efforts in exploring alternative power sources, including

renewable energy, and in promoting public awareness of these alternative

power sources. To this end, CAPCO has launched a commercial scale wind

turbine pilot demonstration (the Project) to investigate the economic,

environmental and technical feasibility and practicality of wind energy

application in Hong Kong, in support of HKSARG’s renewable energy

initiative. The Project will take a grid-connected commercial scale wind

turbine through the full site selection and regulatory process so that the

community can gain more knowledge and experience about wind energy

application in Hong Kong.

This Project Profile presents an outline of the Project and key information on

the environmental aspects of the Project for the application of an

Environmental Impact Assessment (EIA) Study Brief under Section 5.1(a) of

the Environmental Impact Assessment Ordinance (Cap. 499) (EIAO).


HEI LING CHAU


2

2 BASIC INFORMATION

2.1 PROJECT TITLE

A Commercial Scale Wind Turbine Pilot Demonstration at Hei Ling Chau

2.2 NAME OF PROJECT PROPONENT

Castle Peak Power Company Limited (CAPCO)

2.3 NAME AND TELEPHONE NUMBER OF CONTACT PERSON

Name, Position and Title Telephone Number

Mr Richard Morse

Head of Environmental Strategy and Development, CLP

Power Hong Kong Limited

2678 8380

2.4 DESIGNATED PROJECT TO BE COVERED BY THE PROJECT PROFILE

The grid-connected commercial scale wind turbine power generation system

qualifies as a Designated Project under Category D (Energy Supply), Item D.1

(Public Utility Electricity Power Plant) of Schedule 2, Part I under the EIAO.

2.5 PURPOSE AND NATURE OF THE PROJECT

The Project is a pilot study and its main purposes are as follows:

• to evaluate the applicability of a grid-connected wind power generation

system in Hong Kong;

• to collect engineering and environmental information (including the

necessary statutory permitting requirements) required for the development

of wind power generation in Hong Kong;

• to educate and raise the community’s awareness of the issues, costs,

constraints, benefits, etc of wind energy generation in Hong Kong.

2.6 PROJECT DESCRIPTION

This section presents the key information relating to the selection of the

Project Site, the wind turbine proposed to be installed, and the activities

associated with the construction and operation of the Project. It should be


HEI LING CHAU


3

noted that the Project is under design and that the details are subject to

change.

2.6.1 Site Selection Process

A rigorous site selection process has been conducted to identify suitable areas

for the development of the Project. A potential area must have the following

essential characteristics to be considered in the selection process:

• the area must be on land;

• the area must have close access to CLP Power’s transmission network.

Considerations given in the selection process can be broadly divided into

three main categories, namely grid interface; environmental, physical and

social constraints; and wind resource.

The main consideration in terms of grid interface in the selection process is the

ability to connect the potential area with CLP Power’s existing supply grid

through a land cable. The environmental, physical and social constraints to

the development of the Project include:

• Country Parks and any gazetted extensions;

• Special Areas;

• Ramsar Sites;

• firing ranges;

• Wild Animal Protection Areas;

• Sites of Special Scientific Interest (SSSI);

• sea turtle nesting grounds;

• gazetted bathing beaches;

• seawater intake points;

• areas with residential and commercial premises;

• development height restrictions in the vicinity of the Hong Kong

Disneyland Resort;

• building height restrictions associated with the safe operation of the Hong

Kong Airport;

• areas with population density greater than 30,000 per km2;

• constructability.

In parallel with the site screening exercise, preliminary wind resource

modelling was conducted to identify areas with a reasonable wind resource

for the development of the Project.

A composite constraints map that shows areas with all the abovementioned

constraints (Figure 2.6a) was overlaid with a relative wind resource map of

Hong Kong (Figure 2.6b) to establish a long-list of potential areas. Areas with

reasonable wind resource potential and unconstrained by the abovementioned

factors were listed for further consideration.

#

# ###### #

##

#

##

#

###

###

####

#

#

#

##

##

#

#

#

######

#

#

Hong Kong SAR Boundary

New Territories

Hong Kong IslandLantau Island

Kowloon

EnvironmentalResourcesManagement

Constraints to the Siting of a Commercial Scale Wind Turbine within CLP Supply Area

Figure 2.6a

File: 0019313/all_absolutes_v3..mxdDate: 23/02/2006

Legend


Constraints

0 5 10 152.5Kilometers

.


Hong KongIsland

Kowloon

Lantau Island

New Territories


Relative Wind Resources within CLP Supply Area

Figure 2.6b

File: 0019313\Isovents_v3.mxdDate: 23/02/2006

0 5 102.5Kilometers

Legend

Low

Relative Wind Resources

High ²


HEI LING CHAU


4

A set of criteria covering planning, environmental and engineering

considerations was applied to assess the potential areas. Site visits were

conducted and observations from the visits and their implications on the

development of the Project were noted. Based on the ranking results and

consideration of the site observations, a short-list of potential areas was

prepared.

The potential areas were finally subject to a preliminary review to evaluate the

feasibility and acceptability of the potential areas for the development of the

Project in terms of engineering feasibility and wind energy potential. With

the initial confirmation on the engineering feasibility and wind energy

potential, an area on the island of Hei Ling Chau was selected as one of the

two potential Project Sites. A separate Project Profile is expected to be

submitted for the alternative site.

2.6.2 The Project Site

Hei Ling Chau is an outlying island to the east of Lantau Island with an

approximate total area of 1.9km2 (190 ha). The entire island is currently

under the management of the Correctional Services Department (CSD). The

facilities on the island include the Hei Ling Chau Correctional Institution, Hei

Ling Chau Addiction Treatment Centre, Hei Ling Chau Addiction Treatment

Centre (Annex) and Lai Sun Correctional Institution (Figure 2.6c). There are

also other supporting facilities including administration buildings, staff

quarters, two helipads and a guard dog kennel. The island is only accessed

by marine transport and access is restricted. Visitors normally land at the

passenger ferry jetty in the north-western tip of the island. There is also a

berthing facility associated with the refuse transfer facility within the north-

western corner. A number of breakwaters have been constructed to the

southwest of the island to form a typhoon shelter. The island is served by a

single-lane paved vehicular road connecting the various CSD facilities.

The proposed Project Site is located on relatively level ground at an

approximate elevation of +70mPD in the southern part of Hei Ling Chau.

Considering the potential size of the wind turbine (Table 2.1), the total

elevation of the wind turbine could potentially be up to about +160mPD.

The building height limit associated with the safe operation of the Hong Kong

Airport at the Project Site is approximately +162 to 173 mPD. The

dimensions of the Project Site, including the construction lay down areas for

the various components of the wind turbine system, are approximately 50m x

85m (Figure 2.6d). According to information provided by CSD and site

observations, the Project Site is currently used for the temporary storage of

materials and equipment for construction activities on the island.

The two helipads on the island are regularly used by the Government Flying

Service (GFS) to support the operation of the penal facilities. The nearest

helipad is located over 150m from the planned location for the wind turbine.


Figure 2.6c

FILE: 0019313aa5DATE: 10/03/2006

CLP/CAPCO Commerical Scale Wind Turbine Pilot DemonstrationHei Ling Chau Project Site and its Surrounding Environment

Refuse Transfer Station and ExistingJetty / Loading Facility

Hei Ling Chau Addiction Treatment Centre

Lai Sun Correctional Institution

Hei Ling Chau Correctional Institution

Hei Ling Chau Addiction TreatmentCentre (Annex)

Existing Access Road

Project Site

Existing Jetty Access for Passenger Ferry

CSD Accommodation, Staff Facilities andVisitor Areas

Reservoir

Typhoon Shelter

Helipad

Helipad

Jetty

Guard Dog Kennel

TS

TS

60

80

HL

þÿ�ÿ�ý�Pipelines

Pip

elin

e

Road

Road

91.0

87.7

94.9

70.0

66.9

71.770.6

67.9

L

L

L

E

L

L

L

E

72

HEI LING CHAU

76.1

70.9

73.3

70.1

78.981.3

68.0

71.3

G

HEI LING CHAU

TS

TSþÿ�ÿ�ý�ß�

HEI LING CHAU

G

þÿ�ÿ�ý�

Road

78.981.3

68.0

69.8

70.2

60

G

FP

0+

350

0+

400

0+445

Legend:

E

B

B

A

G

C

D

F

Turbine Lay Down Area B 4mx20m

Set Up Transformer 2.4mx2.6m

Jib Assembly Area 4mx40m

70mPD (Approx.)

Access

Track

Materials Lay Down Area

H

Works area

Tower Foundation

Concrete Hardstand Area

Land boundary /

extent of platform to

be used as fill site for

excavated material

Compacted Fill / Lay Down Area

Bla

de

R=

30m

Note : Blade radius 30m approx..

Land boundary to reflect sail

envelope of blades.

þÿ�1�0�0�

Flight Line C HelipadL

L

Long r

oute

access

Short routeaccess

Access gate

N

þÿ�1�

A

B

C

D

E

F

G

H

USTN FILE: 0019313_12_HLC.dgnDATE: 03/03/2006

Note

All dimensions indicated are preliminary

and are subject to detailed design

Substation 5mx6m

Temporary Cabins 5mx10m

Turbine Lay Down Area A 10mx35m

Turbine Foundations 9mx9m

CLP/CAPCO Commercial Scale Wind Turbine Pilot Demonstration

Preliminary Site Arrangement for Hei Ling Chau Project Site

FIGURE 2.6d

Location of

Grave Site

50m (approx.)85m

(approx.)G


HEI LING CHAU


5

2.6.3 The Wind Turbine

Wind turbine technology is evolving rapidly and it is not possible at this stage

to be specific as to the exact type of wind turbine that will be installed. It is

currently envisaged that a wind turbine with a rated capacity of roughly

800 kW to 1.3 MW will be installed. The proposed wind turbine will be a

three-bladed horizontal axis machine. In a typical wind turbine, the main

electrical and mechanical parts, including the gearbox, the generator and the

yaw mechanism, are housed in the nacelle, which sits on top of a tower. The

tower will be a tubular structure and commonly constructed of steel, but can

also be of other materials such as concrete. The tower will stand upon a

concrete base with approximate dimensions of 9 m x 9 m.

The rotor blades capture the wind and transfer its power to the rotor hub,

which is connected to the electrical generator via the gearbox. The electrical

power generated is transmitted via a step-up transformer to a substation, from

where the power is fed into the nearest existing 11 kV power grid through

overhead or underground transmission cables. A summary of the general

wind turbine specification is presented in Table 2.1.

Table 2.1 A Summary of the General Wind Turbine Specification

Parameter General Specification

Type 3-bladed horizontal axis machine

Rated Capacity 800kW – 1.3 MW, 50 Hz, 690 V

Grid Connection 11 kV

Power Regulation Stall or pitch control

Design Lifetime 20 years

Size of Rotor Blade Up to 30 m length, 5 t weight (assembled 3-

bladed rotor weighs up to 21.5 t)

Size of Nacelle Up to 10 m (l) x 3.75 m (h) x 3.0 m (w), 58.5 t

weight

Size of Tower Up to 60 m height

Overall Size of Wind Turbine Up to 90 m tip height

2.6.4 Construction of the Project

The major construction activities for the Project will include upgrading of

existing roads and/or creation of temporary access for the delivery of

construction materials and equipment, formation of the platform for the

erection of the tower, construction of the tower foundation, erection of the

tower, installation of the nacelle and rotor and installation of the control and

transmission systems.

Two access routes have been identified for the delivery of construction

materials and equipment to the Project Site (Figure 2.6e). The first route, the

Long Route, makes use of the existing heavy load berthing facilities and road

system. The route will take the northern part of the existing loop route and

follow the existing alignment to the Project Site. Enabling works including

utility diversions, removal of structures blocking the transport route, signs

Visit Room

P

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

Visit Room

Block M

Block N

þÿ�ÿ�ý� Pier

LT

HW

M

CW

FP

14.9

L

EE

L

L

L

L

L

L

L

L

P

þÿ�ÿ

þÿ�ÿ

þÿ�ÿþÿ�ÿ

þÿ�ÿ

þÿ�ÿ

Hei Ling Chau

Officers Mess

Block T

20

20

40

60

Basketball

Court

PlaygroundBarbecue Area

Playground

WT

HWM

Flat Rock

HWM

HWMFlat Rock

Flat Rock

Flat Rock

Flat Rock

PO

HWM

HEI LING CHAU ROAD

þÿ�ÿ�ý�

þÿ�ÿ�ý�

FP

CW

CW

FP

CW

FP

Road

FP

Road

17.3

3.6

25.643.3

21.9

45.6

46.8

39.5

10.8

49.1

6.4

L

LL

L

L

L

L

LL

L

LL

L

L

L

L

LL

HL

L L

LL

L

L

L

20

40

40

20

HEI LING CHAU

G

HWM

Flat Rock

HWM

HWM

Flat Rock

Flat Rock

FP

FP

FP

FP

FP

43.5

40.6

P

PH

PH

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

Mess

Blo

ck Q

Blo

ck P

Blo

ck H

Holiday Bungalow A&B

Blo

ck I

Blo

ck G

Bungalow A

Block F

Bungalow

E

Bu

ng

alow

D

6

20

40

40

20

Pie

r

Refuse Transfer Station

HEI LING CHAU

Playground

ES

S

Septi

c Tank

Pipeline

WT

CUL

INC

WIP May 2005

SHR

LT

SHRSHR

SHR

Seaw

all

HW

M

Rocky

Area

Rubble

Rubble

Flat Rock

HW

M

Flat Rock

H W M

PO

HW

M

HWM

HW

M

Seaw

all

þÿ�ÿ�ý�

Road

Road

FP

Road

Road

FP

Road

Ram

p

4.9

3.9

22.323.3

53.0

38.7

43.7

42.643.6

44.0

3.7

4.1

3.9

4.6

LL

L

L

L

L

L

L

L

L LL

L

L

L LL

L

L

L

L

L

L

L

L

LL

H

L

L

L

L

LH

L

L

L

H

L

L

L

L

H

L

L

L

L

L

L

L

þÿ�ÿ�ý�

P

TS

TS

TS

TS

TS

TS

P

Podium

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ�ý

�œ�⁄�

ì�

þÿ�ÿ�ý�ß

�‡�F�˘�

þÿ�ÿ�ý�y�À�s�

þÿ�ÿ�ý

�ı�

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ�ý�°�¢�„� þÿ�ÿ�ý�›

þÿ�ÿ�ý�›

þÿ�ÿ�ý�–�¢�„�

Block S

Blo

ck R

Den

tal

Cli

nic

Hei

Lin

g Chau

Addic

tion T

reat

men

t C

entr

e


Geo

rge

Hal

l

Block A

Block E

Blo

ck D

Blo

ck B

Block C

Tower 1 Bungalow C

Bungalow B

Tower 2

4-10

11

-1

2

15-21

22

23

24-27

2815

31-34

29

30

60

80

60 80

20

100

100

40

60

80

10

0

80

60

806

0

60

40

40

28

4020

20

20

20

40

þÿ�ÿ�ý�q�„�

þÿ�ÿ�ý�ß�

þÿ�ÿ�ý�

þÿ�ÿ�ý�‹�þÿ�ÿ�ý�

þÿ�ÿ�ý�x�

þÿ�ÿ�ý�

þÿ�ÿ�ý�ß�‡�F�˘�

Telephone

Exchange

ES

S

HEI LING CHAU

HL

Church

ESS

ET

Football Field

Stand

Basketball C

ourt

Workshop

HEI LING CHAU TYPHOON SHELTER

ESS

ESS

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�˘�

þÿ�ÿ�ý

�˘�

CUL

AR

CH

PipelineWT

Pipel

ine

Pipeline

CULCUL

CUL

Septic

Tank

Septic T

ank

WT

WT

WT

WT

W

M

þÿ�ÿ�ý�

þÿ�ÿ�ý�þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�þÿ�ÿ�ý�þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�·�

Flat Rock

HW

M

Flat RockFlat

Rock

Flat Rock

HWM

Flat Rock FlatRock

Flat Rock

Flat Rock

Flat Rock

Flat Rock

Dolphin HW

M

PO

PO

PO

PO

HE

I LIN

G C

HA

U R

OA

D

þÿ�ÿ�ý�ß�‡�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý

�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

Tra

ckF

P

FP

Ro a

d

FP

Road

Road

FP

Road

Road

FP

Track

Ro

ad

Road

Road

Road

FP

11.2

8.8

44.4

40.2

115.5

40.9

81.8

104.2

82.7

62.4

79.1

44.2

27.5

51.1

26.8

51.6

47.4

26.8

45.5

55.6

48.3

38.0

41.1

37.8

23.8

3.2

7.9

3.221.3

18.0

14.0

4.3

13.912.5

3.6

9.4

8.8

7.5

16.8

43.0

13.6

17.4

17.2

L

L

L

L

E

L

L

L

H

L

ELL

LLL

L L

L

LL L

L

LL

L

LL

L

LL

L L

L

H

L

L L

L L

L

LL L

L L

E

L

L

L

L

L

L

L

L

L

L

L

L

H

PH

TS

TS

TS

TS TS

TS

TS

PH

M

A

L

B

K

C

J

D

I

E

H

F

G

N

O

In

terv

iew

Blo

ck

Adm

inin

istr

atio

nB

lock

Staff Rest B

lock

Dining Hall A

Dining Hall B

þÿ�ÿ�ý�|�•

�

þÿ�ÿ�ý�æ�ƒ�

þÿ�ÿ�ý�¾�´�

ß�›�

þÿ�ÿ�ý�„


20

40

40

60

80

100

60

80

100

120

140

100

120

160

14

0

180

160

140 80

60

120

100

100


þÿ�ÿ�ý�—�ƒ�

þÿ�ÿ�ý

�

þÿ�ÿ�ý�x�þÿ�ÿ�ý�‹�

þÿ�ÿ�ý�j�⁄�h�


þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�ˆ�ƒ�ô�

þÿ�ÿ�ý

�


þÿ�ÿ�ý�~�

þÿ�ÿ�ý�E�


þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

HEI LING CHAU

Badminton Court

Workshop

Basketball CourtFootball Field

ES

S

Main Gate

Lodge &Visit Room

Kitchen

Store

Show

er

Sewage TreatmentPlant

Show

er

HEI LING CHAU

CORRECTIONAL INSTITUTION

Washing Area

Clinic

Clinic

School

School

ESS

Nursery

þÿ�ÿ�ý�

þÿ�ÿ�ý�

Pip

eline

Pipelin

e

WT

CUL

CUL

CUL

WT

WT

þÿ�ÿ�ý�Reservoir

PO

HEI LING CHAU ROAD

HE

I L

IN

G C

HA

U R

OA

D


þÿ�ÿ�ý

�ß�‡�

FP

FP

FP

FP

CWC

W

FP

FP

FP

FP

FP

32.7

75.6

54.8

81.9

60.5

58.1

73.0

68.8

112.7

106.1

112.8

141.5

131.2

91.0

131.5

181.1

84.5

183.3

110.8 100.4

109.3

E

E

E

E

E

E

L

E

H

L

L

L

E

H

L

E

L

E

L

E

L

L

L

H

H

H

H

L

þÿ�ÿ�ý�†�¢�„�

Tower 3

80

60

40

20



þÿ�ÿ�ý�

þÿ�ÿ�ý�



HW

M

HWM

Flat Rock

Flat Rock

Dolphin

Dolphin

þÿ�ÿ�ý�

FP

Road

58.1

58.3

12.2

4.8

2.9

5.53.9

2.8

L

L

L

LL

EE

E

L

L

L

L

L

L

L

L

L

L

Sto

re

Launary R

oom

Office

TS

Din

nin

g

Room

Hospital

Workshop

Workshop

P

PH

TS

TS

Hei Ling Chau Dog Kennel

Telephone

Exchange

Isolated Cell

�Guard House

Adm

inis

trat

ion

Blo

ck

Tower 4

120

120

10

0

100

80

80

60

40

20

60

80

40

60

80

20

4

HEI LING CHAU

HEI LING CHAUADDICTION TREATMENT CENTRE

(ANNEX)

Jetty

HL


þÿ�ÿ�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

Graves

Pip

elin

es

Pip

elin

e

Pip

elin

e

Pip

elin

e

WT

Pip

elin

es

Pipelines

Pip

elin

e

G

G

W

W

HWM

HW

M

Rocky

Area

HWM

HW

M

HEI LIN

G C

HA

U R

OA

D

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

Road

Road

Road

FP

FB

FP

Road

FP

Road

TrackRoad

Ramp

CW

Road

Road

Road

FP

Road

136.2

75.4

77.067.8

74.1

123.5

124.1

138.6

102.4

109.3

128.471.9

84.0

92.1

93.9

7.6

5.3

88.2

89.6

94.1

2.7

4.288.0

6.0

5.9

54.0

84.7

3.77.6

83.8

93.2

70.4

3.0

79.2

2.9

91.0

17.5

87.7

31.1

38.0

94.9

47.6

53.6

50.7

59.7

70.0

68.4

66.9

71.770.667.9

L

E L

L L

L

L L

LE

L

L

LL

E

L

EL

L

L

L

L

LE

L

L

E

LL

L

L

L

E

L

L

L

E

L

L

L

L

E

L

L

L

L

L

LL

L

L

LL

E

L

L

L

L

L

L

L

L

E

L

L E

L

E

L

L

L

LL

L

E

HL

L

L L

LLL

L

L

L

L

L

L L

L

LL

L

L L

L

E

L

LL

E

L

L

L L

L

EL

E

L

PH

60

40

20

þÿ�ÿ�ý�P�

SUNSHINE ISLAND

(CHAU KUNG TO)

þÿ�ÿ�ý�


þÿ�ÿ�ý�

Rocky

Area

HW

M

RockyAreaRocky

Area

Flat Rock

62.960.4

56.1

57.8

53.1

51.0

69.5

5.9

6.1

PH

20

40

60

80

þÿ�ÿ�ý�ß�HEI LING CHAU

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

HW

M

Rocky Area

HW

M

Rocky Area

Flat Rock

HW

M

Flat Rock

HW

M

FP

5.3

4.7

5.3

5.3

15.7

4.8

2.3

34.2

47.3

72.6

72.6

12.9

3.9

3.6

75.8

96.3

70.5 2.5

86.1

31.2

3.0

23.6

2.4

11.1

8.8

6.0

4.1

5.3 3.4

E

20

40

72

60

40

20

HEI LING CHAU

þÿ�ÿ�ý�

HW

M

HW

M

Flat Rock

þÿ�ÿ�ý

�T

rack

3.0

45.4

7.32.4

6.1

7.6

3.9

63.7

64.5

76.1

70.9

73.3

63.1

70.1

116

100

80

60

40

20

4

78.981.3

68.0

71.3

92.4

110.9

122.2

97.5

3.3

4.1

G

HEI LING CHAU

Flat Rock

HW

M

Rock

Flat

RockFlat

Rock

Flat

TS

TS

Tower 5

þÿ�ÿ�ý�·�¢�„�

116

100

80

60

40

20

4



þÿ�ÿ�ý�¾�


HEI LING CHAU


Bre

akw

ater

Bre

akwate

r

G

LT

LT

LT


þÿ�ÿ�ý�


þÿ�ÿ�ý�

þÿ�ÿ�ý�


þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý

�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�


Dolphin

Flat Rock

Dolphin

Rubble

HWM

Rubble

HWM

Dolphin

Rubble

Rubble

Rubble HWM

Rubble

HW

M

Flat Rock

Rubble

Rubble

Flat Rock

HW

M

Rubble

Rubble

Rubble

FlatRock

HW

M

þÿ�ÿ�ý�R

oad

FP

FP

FP

FP

FP

FP

78.981.3

47.6

68.0

31.3

69.8

70.2

92.4

110.9

9.4

122.2

4.3

9.8

97.54.9

3.3

4.0

4.1

9.2

9.1

4.1

8.8

L

L

L

60

40

20

60

40

20


HEI LING CHAU

G

G

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

Flat Rock

Flat

Rock

Flat Rock

Flat Rock

Flat Rock

HW

M

FP

FP

FP

FP

42.6

40.8

35.3

58.2

56.8

45.0

73.8

42.3

56.4

50.7

22.4

821000 E

821500 E

822000 E

822500 E

823000 E

820500 E

813000 N

812500 N

812000 N

811500 N

Existing passenger ferry jetty

Long Route

New temporary

unloading

platform / jetty

Existing heavy load jetty

and berthing facility

USTN FILE: 0019313_9_HLC.dgn

DATE: 03/03/2006

Legend:

Notes:

1. One way traffic system generally in

operation.

2. Night time construction and transportation

not feasible due to CSD security

procedures.

One-way direction of local traffic

on existing road

Two-way direction of local traffic

on existing road

Short Route

Project Site

Long Route

Long Route

Short Route

CLP/CAPCO Commercial Scale Wind Turbine Pilot Demonstration Construction Access Routes for Hei Ling Chau Project Site

FIGURE 2.6e


HEI LING CHAU


6

and street furniture, and minor road widening and slope works are expected

to be required to facilitate vehicle passage. The Long Route will also be used

for the delivery of general construction materials and plant and of the critical

wind turbine components if they can be broken down into reasonably sized

parts and re-assembled at the Project Site.

Another route, the Short Route, has also been identified as a contingency

measure in the event that the enabling works required for the Long Route

prove to be excessive. This route will involve the upgrading or extension of

the existing jetty in the south-western part of the island. The temporary jetty

will be a steel platform on steel pre-bored H-piles for receiving the heavy

wind turbine components from a derrick lighter. A temporary steel bridge

structure supported on temporary steel piers will be constructed on the slope

above the temporary jetty. The installation of the temporary steel bridge will

require the construction of foundations in the form of spread footing or mini-

piles on the slope above the temporary jetty. A mobile crane will lift the

heavy and bulky components from the temporary steel platform of the jetty to

a waiting trailer on the haul road. The components will then be delivered on

the trailer to the Project Site via the existing road.

Key considerations in the choice of the delivery route will be the material and

method for the construction of the wind turbine tower and the possibility of

breaking down the nacelle into smaller components. If a standard steel

tubular tower is used, the tower will be supplied in three factory-fabricated

tubular sections of lengths up to 23m. It is anticipated that the tower sections

will be delivered on a trailer lorry. An alternative to the steel tubular tower

will be a concrete tower constructed from precast concrete ring segments.

The ring segments will be cast off-site and stitched together at the Project Site

to form a tubular tower. The segments will have diameters from 3.5m to 5m

and a height of about 2.4m.

The passage of long multi-axle articulated vehicles carrying the prefabricated

steel tower sections will require diversion of existing utilities and removal of

some street furniture along the existing road of the Long Route. Widening of

the existing road at critical locations may also be required. For the Short

Route, it is also likely that minor widening or slope trimming may be required

at certain locations for the passage of long vehicles delivering the tower

sections. If the concrete tower option is adopted and the nacelle can be

broken down to smaller components, the Long Route may be able to

accommodate the transportation of the materials and hence the Short Route

may not be required; but this cannot be confirmed until the wind turbine

procurement process is completed.

Table 2.2 presents the key features of the two access routes.


HEI LING CHAU


7

Table 2.2 Key Features of Access Routes

Long Route Short Route

• Widening of existing road at critical locations

for wind turbine component delivery

• Utilities diversion along the existing road

• Some street furniture to be removed and

replaced

• Temporary jetty upgrading or extension

may require works in the foreshore

• Foundations for piers of the temporary

steel bridge on the slope above the

temporary steel jetty

• Minor widening of existing road

connecting the Project Site and the

temporary steel bridge.

The Project Site will occupy an approximate area of around 50m x 85m,

including the lay down areas for construction materials and wind turbine

components. It is currently anticipated that only minor site clearance and

formation will be required. A preliminary engineering review indicates that

the materials underneath the Project Site comprise poor quality fill overlying

rock. A reinforced concrete foundation with pre-bored H-piles will be

required for supporting the wind turbine.

The main construction activities at the Project Site are:

• site clearance and formation;

• pre-bored H-piling and construction of reinforced concrete foundation (9m

x 9m x 2m) for the wind turbine;

• erection of wind turbine tower by assembling pre-fabricated steel tower

sections or stitching of precast concrete ring segments;

• installation of nacelle and rotor blades;

• installation of step up transformer and substation;

• installation of transmission cables between the substation and the 11 kV

supply grid;

• testing and commissioning of the wind turbine system.

2.6.5 Operation of the Project

The operation of the wind turbine, including start-up and shut-down, will be

automatic. The wind turbine will be unmanned and attendance of

operational personnel will only be required during emergencies or routine

maintenance.


HEI LING CHAU


8

2.7 PLANNING AND IMPLEMENTATION PROGRAMME

The Project will be planned and implemented by CAPCO together with

consultants and contractors. There are no known interactions with other

projects. The front-end engineering design for the Project has commenced.

The key stages of the Project, according to the currently envisaged Project

Programme, are presented in Table 2.3.

Table 2.3 Proposed Project Programme

Key Stage of the Project Indicative Date

Commencement of front-end engineering design Q4, 2005

Land application 2006 to 2007

Gazettal under the Foreshore and Seabed (Reclamations) Ordinance

(FSRO) if the Short Route is used and the extension of the jetty at the

typhoon shelter is required

2006 to 2007

Commencement of construction Early 2007

Operation of the wind turbine Late 2007


HEI LING CHAU


9

3 MAJOR ELEMENTS OF THE SURROUNDING ENVIRONMENT

The Project Site is located in the southern part of Hei Ling Chau (Figure 2.6c).

The area was previously cleared for the storage of materials for other

construction activities and is currently not covered by any Outline Zoning

Plan (OZP).

The northern boundary of the Project Site is close to an engineered slope. An

existing vehicular road is located at the north-western corner of the Project

Site. The Project Site will encroach upon most of the temporary structures

currently used by works contractors for storage. Natural hill slopes are

found to the east and south of the Project Site. The vehicular road to the

north-west will be the access point to the Project Site. A grave is found to the

west of the Project Site.

A helipad is located on top of the cut slope, at a distance of approximately

110m from the northern boundary of the Project Site (the wind turbine will be

located over 150m from the limit of the operation sector of the helipad). The

helipad is in active use. According to information provided by the Civil

Aviation Department (CAD) and GFS, the helipad is used solely by the GFS.

In addition to the areas in the vicinity of the Project Site where the wind

turbine will be installed, the environment along the construction access routes

will need to be considered.

In terms of the ecological environment, the island is dominated by shrubland

and plantation with patches of developed area in between. No declared

monuments, graded buildings, or known archaeological sites have been

identified on the island.

Most of the buildings on the island, including the Hei Ling Chau Correctional

Institution, Hei Ling Chau Addiction Treatment Centre, Hei Ling Chau

Addiction Treatment Centre (Annex), Lai Sun Correctional Institution, the

staff quarters and the administration buildings, will be potential Air Sensitive

Receivers (ASRs) and Noise Sensitive Receivers (NSRs). The locations of

these potential ASRs and NSRs are shown in Figure 3.1a.

Hei Ling Chau is within the Southern Water Control Zone (WCZ) and a

typhoon shelter is found to the south-west of the Project Site.

Visit Room

P

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

Visit Room

Block M

Block N

þÿ�ÿ�ý� Pier

LT

HW

M

CW

FP

14.9

L

EE

L

L

L

L

L

L

L

L

P

þÿ�ÿ

þÿ�ÿ

þÿ�ÿþÿ�ÿ

þÿ�ÿ

þÿ�ÿ

Hei Ling Chau

Officers Mess

Block T

20

20

40

60

Basketball

Court

PlaygroundBarbecue Area

Playground

WT

HWM

Flat Rock

HWM

HWMFlat Rock

Flat Rock

Flat Rock

Flat Rock

PO

HWM

HEI LING CHAU ROAD

þÿ�ÿ�ý�

þÿ�ÿ�ý�

FP

CW

CW

FP

CW

FP

Road

FP

Road

17.3

3.6

25.643.3

21.9

45.6

46.8

39.5

10.8

49.1

6.4

L

LL

L

L

L

L

LL

L

LL

L

L

L

L

LL

HL

L L

LL

L

L

L

20

40

40

20

HEI LING CHAU

G

HWM

Flat Rock

HWM

HWM

Flat Rock

Flat Rock

FP

FP

FP

FP

FP

43.5

40.6

P

PH

PH

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

Mess

Blo

ck Q

Blo

ck P

Blo

ck H

Holiday Bungalow A&B

Blo

ck I

Blo

ck G

Bungalow A

Block F

Bungalow

E

Bu

ng

alow

D

6

20

40

40

20

Pie

r

Refuse Transfer Station

HEI LING CHAU

Playground

ES

S

Septi

c Tank

Pipeline

WT

CUL

INC

WIP May 2005

SHR

LT

SHRSHR

SHR

Seaw

all

HW

M

Rocky

Area

Rubble

Rubble

Flat Rock

HW

M

Flat Rock

H W M

PO

HW

M

HWM

HW

M

Seaw

all

þÿ�ÿ�ý�

Road

Road

FP

Road

Road

FP

Road

Ram

p

4.9

3.9

22.323.3

53.0

38.7

43.7

42.643.6

44.0

3.7

4.1

3.9

4.6

LL

L

L

L

L

L

L

L

L LL

L

L

L LL

L

L

L

L

L

L

L

L

LL

H

L

L

L

L

LH

L

L

L

H

L

L

L

L

H

L

L

L

L

L

L

L

þÿ�ÿ�ý�

P

TS

TS

TS

TS

TS

TS

P

Podium

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ�ý

�œ�⁄�

ì�

þÿ�ÿ�ý�ß

�‡�F�˘�

þÿ�ÿ�ý�y�À�s�

þÿ�ÿ�ý

�ı�

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ

þÿ�ÿ�ý�°�¢�„� þÿ�ÿ�ý�›

þÿ�ÿ�ý�›

þÿ�ÿ�ý�–�¢�„�

Block S

Blo

ck R

Den

tal

Cli

nic

Hei

Lin

g Chau

Addic

tion T

reat

men

t C

entr

e


Geo

rge

Hal

l

Block A

Block E

Blo

ck D

Blo

ck B

Block C

Tower 1 Bungalow C

Bungalow B

Tower 2

4-10

11

-1

2

15-21

22

23

24-27

2815

31-34

29

30

60

80

60 80

20

100

100

40

60

80

10

0

80

60

806

0

60

40

40

28

4020

20

20

20

40

þÿ�ÿ�ý�q�„�


þÿ�ÿ�ý�

þÿ�ÿ�ý�‹�þÿ�ÿ�ý�

þÿ�ÿ�ý�x�

þÿ�ÿ�ý�


Telephone

Exchange

ES

S

HEI LING CHAU

HL

Church

ESS

ET

Football Field

Stand

Basketball C

ourt

Workshop


ESS

ESS

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�˘�

þÿ�ÿ�ý

�˘�

CUL

AR

CH

PipelineWT

Pipel

ine

Pipeline

CULCUL

CUL

Septic

Tank

Septic T

ank

WT

WT

WT

WT

W

M

þÿ�ÿ�ý�


þÿ�ÿ�ý�

þÿ�ÿ�ý�þÿ�ÿ�ý�þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�


Flat Rock

HW

M

Flat RockFlat

Rock

Flat Rock

HWM

Flat Rock FlatRock

Flat Rock

Flat Rock

Flat Rock

Flat Rock

Dolphin HW

M

PO

PO

PO

PO

HE

I LIN

G C

HA

U R

OA

D


þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý

�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

Tra

ckF

P

FP

Ro a

d

FP

Road

Road

FP

Road

Road

FP

Track

Ro

ad

Road

Road

Road

FP

11.2

8.8

44.4

40.2

115.5

40.9

81.8

104.2

82.7

62.4

79.1

44.2

27.5

51.1

26.8

51.6

47.4

26.8

45.5

55.6

48.3

38.0

41.1

37.8

23.8

3.2

7.9

3.221.3

18.0

14.0

4.3

13.912.5

3.6

9.4

8.8

7.5

16.8

43.0

13.6

17.4

17.2

L

L

L

L

E

L

L

L

H

L

ELL

LLL

L L

L

LL L

L

LL

L

LL

L

LL

L L

L

H

L

L L

L L

L

LL L

L L

E

L

L

L

L

L

L

L

L

L

L

L

L

H

PH

TS

TS

TS

TS TS

TS

TS

PH

M

A

L

B

K

C

J

D

I

E

H

F

G

N

O

In

terv

iew

Blo

ck

Adm

inin

istr

atio

nB

lock

Staff Rest B

lock

Dining Hall A

Dining Hall B

þÿ�ÿ�ý�|�•

�

þÿ�ÿ�ý�æ�ƒ�

þÿ�ÿ�ý�¾�´�

ß�›�



20

40

40

60

80

100

60

80

100

120

140

100

120

160

14

0

180

160

140 80

60

120

100

100


þÿ�ÿ�ý�—�ƒ�

þÿ�ÿ�ý

�

þÿ�ÿ�ý�x�þÿ�ÿ�ý�‹�

þÿ�ÿ�ý�j�⁄�h�


þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�ˆ�ƒ�ô�

þÿ�ÿ�ý

�


þÿ�ÿ�ý�~�



þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

HEI LING CHAU

Badminton Court

Workshop

Basketball CourtFootball Field

ES

S

Main Gate

Lodge &Visit Room

Kitchen

Store

Show

er

Sewage TreatmentPlant

Show

er

HEI LING CHAU

CORRECTIONAL INSTITUTION

Washing Area

Clinic

Clinic

School

School

ESS

Nursery

þÿ�ÿ�ý�

þÿ�ÿ�ý�

Pip

eline

Pipelin

e

WT

CUL

CUL

CUL

WT

WT

þÿ�ÿ�ý�Reservoir

PO

HEI LING CHAU ROAD

HE

I L

IN

G C

HA

U R

OA

D


þÿ�ÿ�ý

�ß�‡�

FP

FP

FP

FP

CWC

W

FP

FP

FP

FP

FP

32.7

75.6

54.8

81.9

60.5

58.1

73.0

68.8

112.7

106.1

112.8

141.5

131.2

91.0

131.5

181.1

84.5

183.3

110.8 100.4

109.3

E

E

E

E

E

E

L

E

H

L

L

L

E

H

L

E

L

E

L

E

L

L

L

H

H

H

H

L

þÿ�ÿ�ý�†�¢�„�

Tower 3

80

60

40

20



þÿ�ÿ�ý�

þÿ�ÿ�ý�



HW

M

HWM

Flat Rock

Flat Rock

Dolphin

Dolphin

þÿ�ÿ�ý�

FP

Road

58.1

58.3

12.2

4.8

2.9

5.53.9

2.8

L

L

L

LL

EE

E

L

L

L

L

L

L

L

L

L

L

Sto

re

Launary R

oom

Office

TS

Din

nin

g

Room

Hospital

Workshop

Workshop

P

PH

TS

TS

Hei Ling Chau Dog Kennel

Telephone

Exchange

Isolated Cell

�Guard House

Adm

inis

trat

ion

Blo

ck

Tower 4

120

120

10

0

100

80

80

60

40

20

60

80

40

60

80

20

4

HEI LING CHAU

HEI LING CHAUADDICTION TREATMENT CENTRE

(ANNEX)

Jetty

HL


þÿ�ÿ�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

Graves

Pip

elin

es

Pip

elin

e

Pip

elin

e

Pip

elin

e

WT

Pip

elin

es

Pipelines

Pip

elin

e

G

G

W

W

HWM

HW

M

Rocky

Area

HWM

HW

M

HEI LIN

G C

HA

U R

OA

D

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

Road

Road

Road

FP

FB

FP

Road

FP

Road

TrackRoad

Ramp

CW

Road

Road

Road

FP

Road

136.2

75.4

77.067.8

74.1

123.5

124.1

138.6

102.4

109.3

128.471.9

84.0

92.1

93.9

7.6

5.3

88.2

89.6

94.1

2.7

4.288.0

6.0

5.9

54.0

84.7

3.77.6

83.8

93.2

70.4

3.0

79.2

2.9

91.0

17.5

87.7

31.1

38.0

94.9

47.6

53.6

50.7

59.7

70.0

68.4

66.9

71.770.667.9

L

E L

L L

L

L L

LE

L

L

LL

E

L

EL

L

L

L

L

LE

L

L

E

LL

L

L

L

E

L

L

L

E

L

L

L

L

E

L

L

L

L

L

LL

L

L

LL

E

L

L

L

L

L

L

L

L

E

L

L E

L

E

L

L

L

LL

L

E

HL

L

L L

LLL

L

L

L

L

L

L L

L

LL

L

L L

L

E

L

LL

E

L

L

L L

L

EL

E

L

PH

60

40

20

þÿ�ÿ�ý�P�

SUNSHINE ISLAND

(CHAU KUNG TO)

þÿ�ÿ�ý�


þÿ�ÿ�ý�

Rocky

Area

HW

M

RockyAreaRocky

Area

Flat Rock

62.960.4

56.1

57.8

53.1

51.0

69.5

5.9

6.1

PH

20

40

60

80

þÿ�ÿ�ý�ß�HEI LING CHAU

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

HW

M

Rocky Area

HW

M

Rocky Area

Flat Rock

HW

M

Flat Rock

HW

M

FP

5.3

4.7

5.3

5.3

15.7

4.8

2.3

34.2

47.3

72.6

72.6

12.9

3.9

3.6

75.8

96.3

70.5 2.5

86.1

31.2

3.0

23.6

2.4

11.1

8.8

6.0

4.1

5.3 3.4

E

20

40

72

60

40

20

HEI LING CHAU

þÿ�ÿ�ý�

HW

M

HW

M

Flat Rock

þÿ�ÿ�ý

�T

rack

3.0

45.4

7.32.4

6.1

7.6

3.9

63.7

64.5

76.1

70.9

73.3

63.1

70.1

116

100

80

60

40

20

4

78.981.3

68.0

71.3

92.4

110.9

122.2

97.5

3.3

4.1

G

HEI LING CHAU

Flat Rock

HW

M

Rock

Flat

RockFlat

Rock

Flat

TS

TS

Tower 5

þÿ�ÿ�ý�·�¢�„�

116

100

80

60

40

20

4





HEI LING CHAU


Bre

akw

ater

Bre

akwate

r

G

LT

LT

LT


þÿ�ÿ�ý�


þÿ�ÿ�ý�

þÿ�ÿ�ý�


þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý

�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�


Dolphin

Flat Rock

Dolphin

Rubble

HWM

Rubble

HWM

Dolphin

Rubble

Rubble

Rubble HWM

Rubble

HW

M

Flat Rock

Rubble

Rubble

Flat Rock

HW

M

Rubble

Rubble

Rubble

FlatRock

HW

M

þÿ�ÿ�ý�R

oad

FP

FP

FP

FP

FP

FP

78.981.3

47.6

68.0

31.3

69.8

70.2

92.4

110.9

9.4

122.2

4.3

9.8

97.54.9

3.3

4.0

4.1

9.2

9.1

4.1

8.8

L

L

L

60

40

20

60

40

20


HEI LING CHAU

G

G

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

þÿ�ÿ�ý�

Flat Rock

Flat

Rock

Flat Rock

Flat Rock

Flat Rock

HW

M

FP

FP

FP

FP

42.6

40.8

35.3

58.2

56.8

45.0

73.8

42.3

56.4

50.7

22.4

821000 E

821500 E

822000 E

822500 E

823000 E

820500 E

813000 N

812500 N

812000 N

811500 N

Legend:

Notes:

1. One way traffic system generally in

operation.

2. Night time construction and transportation

not feasible due to CSD security

procedures.

One-way direction of local traffic

on existing road

Two-way direction of local traffic

on existing road

Project Site

Long Route

Short Route

USTN FILE: 0019313_15_HLC.dgn

DATE: 10/03/2006

Administration

Block

Hei Ling Chau

Correctional

Institution

Hei Ling Chau

Addiction Treatment

Centre (Annex)

Lai Sun

Correctional

Institution

Staff Quarters

FIGURE 3.1a

CLP/CAPCO Commercial Scale Wind Turbine Pilot Demonstration

Potential Air and Noise Sensitive Receivers for Hei Ling Chau Project Site


HEI LING CHAU


10

4 POSSIBLE IMPACT ON THE ENVIRONMENT

The construction and operation of the Project may give rise to potential

environmental impacts. These potential impacts are identified in Table 4.1

and are addressed in the sections that follow.

Table 4.1 Potential Environmental Impacts Arising from the Project

Potential Impact Construction Operation

• Gaseous Emission �� –

• Dust �� –

• Odour – –

• Noise ��

• Night-Time Operations – ��

• Traffic (Land & Marine) �� –

• Liquid Effluents, Discharge or Contaminated Runoff �� –

• Generation of Waste or By-products �� –

• Manufacturing, Storage, Use, Handling, Transport, or

Disposal of Dangerous Goods

– –

• Hazard to Life – –

• Landfill Gas Hazard – –

• Disposal of Spoil Material �� –

• Disruption of Water Movement or Bottom Sediment ��(only if the

Short Route is

used) –

• Unsightly Visual Appearance ��

• Cultural & Heritage – –

• Terrestrial Ecology ��

• Marine Ecology – –

• Cumulative Impacts – –

Legend:

‘��’ = Possible ‘–‘ = Not Expected

4.1 CONSTRUCTION PHASE

4.1.1 Air Quality

Given the limited number of construction vehicles and plant required for the

construction of a wind turbine, the potential impact from gaseous emissions

from these vehicles and plant will be negligible. Dust nuisance is the only

potential air quality impact during the construction of the Project.

Foundation construction, piling and stabilisation works will be the main

potential sources of construction dust. With the small Project Site area and a

relatively short construction period, adverse impacts associated with

construction dust are not expected.


HEI LING CHAU


11

4.1.2 Noise Impact

The amount of construction equipment to be used during construction is small

given the relatively small scale of the Project and the nature of construction.

A small number of Powered Mechanical Equipment (PME) such as generator,

excavator, concrete lorry mixer, heavy duty tracked crane and mobile crane

will be used during construction. If the Short Route is required for the

delivery of bulky wind turbine components, the potential noise impact to the

Hei Ling Chau Addiction Treatment Centre (Annex) during the construction

of the temporary jetty extension and the temporary steel bridge will need

careful consideration. Other than this, no adverse construction noise impact

is envisaged.

4.1.3 Traffic Generation

With the relatively small scale and short duration of construction activities,

the amount of marine and road traffic generated will be small. As the road

system on the entire island is under the control of CSD, any potential traffic

issues can also be resolved through close liaison and frequent communication

with CSD. It is expected that the construction workforce required for the

works will be small. The construction workers should be able to travel to the

island using the existing scheduled passenger ferry service. No adverse

impacts on traffic are anticipated.

4.1.4 Waste Management

The construction activities associated with the Project may generate the

following broad categories of waste:

• construction and demolition (C&D) materials, mainly inert materials

arising from foundation and piling works;

• small quantities of chemical waste, such as batteries and lubricating oils

from the maintenance of construction vehicles and equipment;

• small quantities of general refuse, including food waste from the on-site

work force and the packaging from the construction materials.

It is expected that inert materials generated from the construction works will

be properly segregated and will be reused for backfilling on-site. The

amount of C&D waste requiring off-site disposal and the associated potential

impacts will be negligible.

The construction activities would involve a limited number of construction

vehicles and equipment. The quantities of chemical waste to be generated

from regular maintenance of these vehicles and equipment should be minimal

and no impact is expected in this respect. With proper housekeeping

measures and refuse collection in place, minimal or no impact is expected to

result from refuse generated during the construction phase of the Project.


HEI LING CHAU


12

4.1.5 Water Quality

The majority of the construction activities associated with the Project will

involve only pre-fabricated steel or precast concrete components, and

therefore the potential for adverse water quality impacts arising from the

works on-site will be low. Adverse water quality impacts from site runoff

are not expected if proper site management practices are fully implemented.

Marine works in the foreshore maybe required for upgrading or extension of

the existing jetty within the typhoon shelter if the Short Route is adopted.

Potential water quality impacts may include a short-term increase in

suspended solids in the water column and a minor alteration of the

hydrodynamic regime by the temporary works. However, with the small

size of the jetty extension (approximately 12m x 20m) and the short duration

over which the temporary jetty extension is required, adverse impacts to water

quality are not anticipated if proper mitigation measures are implemented.

4.1.6 Visual Impact

Construction activities, including site formation and construction activities for

wind turbine foundation, piles and pile caps, lifting of turbine components by

crane and temporary hoarding may pose limited and transient visual impacts

on the surrounding Visual Sensitive Receivers (VSRs). No adverse impacts

are envisaged owing to their transient nature.

4.1.7 Ecology

The Project Site has been optimised to avoid sensitive wildlife habitats,

including that for the rare and endemic Bogadek’s Burrowing Lizard

previously recorded on the island. The proposed Project Site is an area of

wasteland and is dominated by weeds and climbers. The wasteland within

the Project Site was used as a storage area and occupied by surplus

construction materials. Site clearance will be required before construction for

the Project. The enabling works on the access routes may also require the

removal of vegetation. An initial review indicates that most of the plant

species found in the vicinity of the Project Site are common in Hong Kong.

No significant ecological impacts are envisaged during the construction phase

of the Project.

4.2 OPERATIONAL PHASE

4.2.1 Noise Impact

The main sources of noise from the operating wind turbine will include

aerodynamic noise around the rotor blades and the rotation of mechanical

parts. Modern wind turbines have incorporated low-noise designs as

standard features. Sound insulation materials are used in the nacelle to

totally enclose the generator, shaft and gearbox so as to minimise medium and


HEI LING CHAU


13

high frequency noise. Airfoil blades are purposely designed to reduce

aerodynamic noise generated during wind turbine operation. Operational

noise impacts at the closest NSR, Hei Ling Chau Addiction Treatment Centre

(Annex) at a distance of approximately 400m, are expected to be negligible as

a result of the built-in standard low-noise features of the wind turbine and the

large horizontal separation distance with topographical screening.

4.2.2 Visual Impact

Potential visual impacts during the operational phase are associated with the

wind turbine structure and the rotating blades. The wind turbine will have a

rotor tip height of up to 90m and a swept area of about 2,800 m2. The wind

turbine will be unavoidably visible from the surrounding areas, such as the

south-eastern part of Lantau and Cheung Chau and over the sea. Whether

the visual impact is beneficial or adverse would however very much depend

on the viewers’ acceptance of the use of this kind of renewable energy

generation. The level of acceptance by viewers on the island is expected to be

high as environmental awareness amongst CSD staff is generally high and the

department is supportive of the use of renewable energy.

As a result of the proximity of the Project Site to an actively operated helipad,

it is envisaged that certain conspicuous markings and hazard warning lighting

will be required for aviation safety reasons. Consultation with CAD and GFS

will be necessary to ensure that aviation safety requirements are met while the

potential visual impacts produced by such markings and lighting are

minimised.

Some visual disturbances may also arise as a result of the periodic reflection

and sunlight interruption produced by the rotating blades. Careful

considerations on the surface finish of rotor blades should minimise such

disturbances. A suitable overall colour scheme for the wind turbine may also

be considered to further reduce the visual intrusion of the Project.

4.2.3 Ecology

Bird collision is the main concern for any wind turbine development in terms

of ecological impacts during operation. The Project Site is not situated within

any important bird habitat or on the flight path of migratory birds. These

factors, combined with the fact that a single wind turbine will be installed,

would present relatively low risks of bird collision.

The noise produced by the operating wind turbine will be a low, constant

sound of a predictable level. As the Project Site is not within any important

bird habitat, the significance of potential noise impacts on birds is expected to

be low.


HEI LING CHAU


14

5 DESCRIPTION OF MITIGATION MEASURES

5.1 CONSTRUCTION PHASE

5.1.1 Air Quality

With the limited dust impacts associated with the construction of the Project

implementation of standard construction site management practices for dust

control, including erection of site hoardings and watering of any exposed soil

surfaces, will be sufficient to further minimise any residual dust impacts.

5.1.2 Noise

Implementation of standard construction site management measures for noise

control, such as the use of well-maintained construction plant and planning of

the construction plant team, will be sufficient to ensure compliance with the

construction noise limits.

5.1.3 Water Quality

Site run-off and drainage impacts will be minimised with reference to the

control measures stipulated in the EPD's Professional Persons Environmental

Consultative Committee Practice Note for Professional Persons on Construction Site

Drainage (ProPECC PN 1/94). The implementation of good housekeeping and

best management practices for stormwater will ensure that Water Pollution

Control Ordinance (WPCO) standards are met.

In the event that the Short Route is adopted and works at the foreshore are

required, measures to reduce the release of suspended solids into the typhoon

shelter will be implemented as required during the construction of the

temporary jetty extension to minimise the potential water quality impacts.

5.1.4 Waste Management

Only limited quantities of construction waste are expected to arise from the

construction of the Project, of which only a small portion would require

disposal at landfills. To further minimise waste arisings and to keep

environmental impacts within acceptable levels, good site management

practices will be adopted to minimise waste generated and waste on-site will

be properly segregated to increase the feasibility of recycling certain

components of the waste streams, such as steel.

In the event that chemical waste is generated during the construction of the

Project, it will be properly stored in accordance with the EPD’s Code of Practice

on the Packaging, Labelling and Storage of Chemical Waste before collection for

disposal by a licensed Chemical Waste Collector. General refuse generated


HEI LING CHAU


15

on-site will be stored in enclosed bins and transported to the refuse transfer

facility on the island for off-site disposal.

5.2 OPERATIONAL PHASE

5.2.1 Noise

With the use of a wind turbine with a built-in low-noise design and the large

separation with topographical screening between the Project Site and the

nearest NSR, operational noise impacts are expected to be negligible. No

additional mitigation measure is considered necessary.

5.2.2 Visual Impact

With careful consideration given to the surface finish of rotor blades to

minimise the periodic reflection and sunlight interruption and the use of a

colour scheme to reduce visual intrusion, no further visual mitigation measure

is considered necessary during the operational phase.

5.2.3 Ecology

The risks of bird collision with the wind turbine have been minimised through the careful selection of the Project Site location and the avoidance of important bird habitats. No additional mitigation measure is considered necessary.


HEI LING CHAU


16

6 USE OF PREVIOUSLY APPROVED EIA REPORTS

In the preparation of this Project Profile, reference has been made to the EIA

Report submitted by The Hongkong Electric Co Ltd and approved on 27

October 2004, for a similar project entitled Renewable Energy by a Wind Turbine

System on Lamma Island (EIAO Register No: AEIAR- 080/2004). The nature

and purpose, scale and operations of the wind turbine system assessed in the

aforementioned approved EIA Report are similar to those of the wind turbine

pilot demonstration presented in this Project Profile.

Documents

A COMMERCIAL SCALE WIND TURBINE PILOT DEMONSTRATION …