Civil
Engineering Department
The
Government of the
Special
Administrative Region
Agreement No. CE
15/99
Demolition of Buildings and
Structures
in the
Proposed
Comprehensive Development Area Site
Environmental
Impact Assessment (Final Report)
September
2001
Atkins China Ltd
Client
: Civil Engineering Department |
Contract
No. (if any) : - CE 15/99 |
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Project
Title : Environmental Impact
Assessment for Demolition of Kwai Chung Incinerator Plant and Kennedy Town
CDA |
Project No. : 2996 |
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Document No. : 2996-OR025-05 |
Controlled Copy No. : |
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Document Title : Final Environmental Impact
Assessment |
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Covering Letter / Transmittal Ref. No. : 2996/15.40/ |
Date of Issue : September
2001 |
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Revision, Review
and Approval/Authorisation Records |
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1st Issue |
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Revision |
Description |
Prepared by / date |
Reviewed by / date |
App. or Auth. By /
date |
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Distribution
(if insufficient space, please use separate paper)
Controlled
Copy No. |
Issued
to |
1-45 |
Civil
Engineering Department |
46-47 |
ACL
– ELAN |
|
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Note : App. and Auth. mean “Approved” and “Authorised” respectively.
Table of Contents
Executive
Summary
1.2 Purpose and Objectives of the Assignment
2. Study Area, Sensitive Receivers,
Constraints and General Approach to Demolition
2.4 General Approach to Demolition of Buildings and
Structures at KTCDA
2.5 Principles of Chimney Demolition at KTCDA
3.1 Site Location and Description
3.2 Asbestos Investigation Methodology
3.6 Programme for Asbestos Removal
3.7 Regulations, Codes of Practice and Local Requirements
4.1 Requirement for Land Contamination Assessment
4.5 Sampling Locations and Analysis of Results
4.8 Procedures for Management of Contaminated Rubble / Ash
Waste Material
4.9 Management of Contaminated Soil Material
4.10 Protection of Site Workers During Excavation and
Treatment of Soils
5.2 Government Legislation and Standards
5.5 Potential Sources of Impact
6.2 Government Legislation and Standards
7.2 Assessment Criteria and Methodology
7.4 Waste Disposal (Chemical Waste) (General) Regulation
7.6 Land (Miscellaneous Provisions) Ordinance
7.7 Public Cleansing and Prevention of Nuisance Regulation
7.9 Impacts of Wastes Generated from Demolition
7.11 Waste Management Planning
8. Environmental Monitoring and Audit
8.2 Environmental Monitoring and Audit
8.3 Event Contingency Plans (ECPs)
9. Conclusions and Recommendations
9.4 Land Contamination and Remediation
9.8 Environmental Monitoring and Audit.
List of Tables
Table 2.1 Structures to be demolished at KTCDA
Table 3.1 Main Locations for ACM Investigation at KTCDA
Table 3.2 Areas of ACM Identified by Functional Zone
Table 3.3 Estimate of Amount of ACM Weather Cladding
Table 4.1 Summary of Analytical Results – Soil Samples
Table 4.2 Summary of Analytical Results – Groundwater Samples
Table 4.3 Actions Required Post Demolition
Table 5.1 Noise Standards for Daytime Construction Work
Table 5.2 Representative Noise Sensitive Receivers
Table 5.3 Estimated Distances from Chimneys
Table 5.4 Base Suite of Demolition/Construction Plant
Table 5.5 Base Suite of Soil Remediation Construction Plant
Table 5.6 Predicted Unmitigated Noise Levels from Demolition
Table 5.8 Revised Suite of Demolition and Ground Remediation Plant
Table 5.9 Predicted Mitigated Noise Levels from Demolition of
Buildings other than Chimneys
Table 5.10 Predicted Mitigated Noise Levels from Demolition of
Chimneys Only
Table 5.11 Predicted Mitigated Noise Levels (Ground Remediation)
Table 6.1 Representative Air Sensitive Receivers
Table 6.2 Hong Kong Air Quality Objectives (mg/m3) (a)
Table 7.1 KTCDA Principal Demolition Products
Table 7.2 Summary of Waste Management Impacts
Table 8.1 Schedule of Impacts and Mitigation Measures
List of
Figures
Figure 1.1 Kennedy Town CDA Locality Plan
Figure 2.1 Kennedy Town CDA Sensitive Receivers
& Constraints
Figure 2.2 Kennedy Town CDA Outline Zoning Plan
Figure 2.3 Typical Perimeter Noise Barrier
Figure 2.4 External Working Platforms
KTCDA Chimneys
Figure 4.1 Kennedy Town CDA Borehole Locations
Figure 4.2 Contaminated Locations Requiring Clean
Up
List of
Appendices
Appendix A Preferred
Demolition Methodology (Extracted From WP1 Originally Presented November 1999)
Appendix B Criteria for Soil Contamination and Landfill Disposal of Contaminated Soil
Appendix C Water Quality Standards
Appendix D Hazards & Safety Requirements
Appendix E Environmental Outcome Profile
List of
Abbreviations
AAP |
Asbestos Abatement Plan |
ACE |
Advisory Council on Environment |
ACM |
Asbestos Containing Material |
AIR |
Asbestos Investigation Report |
AP |
Authorised Person |
APCO |
Air Pollution Control Ordinance |
AQO |
Air Quality Objective |
ASR |
Air Sensitive Receivers |
ASTM |
American Society for Testing Materials |
BTEX |
Benzene, Toluene, Ethylbenzene and Xylene |
BOO |
Building Ordinance Office |
CAP |
Contamination Assessment Plan |
CAR |
Contamination Assessment Report |
CED |
Civil Engineering Department |
CP |
Car Park |
CPLD |
Committee on Planning & Land Development |
CSTG |
|
CSL |
Registered Asbestos Consultant |
DCDB |
Draft Code of Practice for Demolition of Buildings
|
DSD |
Drainage Services Department |
EIA |
Environmental Impact Assessment |
EIAO |
Environmental Impact Assessment Ordinance |
EM&A |
Environmental Monitoring & Audit |
EMSD |
Electrical & Mechanical Services Department |
EPD |
Environmental Protection Department |
FEHD |
Food and Environmental Hygiene Department |
G I/C |
Government, Institutional/Community |
GDBL |
Gin Drinker’s Bay Landfill |
HEC |
Hong Kong Electric |
HOKLAS |
|
IAR |
Initial Assessment Report |
KTA |
|
KTCDA |
|
KTIP |
|
MTIA |
Marine Traffic Impact Assessment |
NCO |
Noise Control Ordinance |
NSR |
Noise Sensititve Receiver |
NWFB |
|
PCDD / PCDF |
Dioxins and Furans |
PCWA |
Public Cargo Working Area |
PFBP |
Public Fill Barging Point |
PAC / PAH |
Poly Aromatic Hydrocarbons |
PME |
Powered Mechanical Equipment |
PPFS |
Preliminary Project Feasibility Study |
PQA |
Preliminary Quantitative Assessment |
RAC |
Registered Asbestos Contractor |
RAP |
Remediation Action Plan |
R7 |
Route 7 |
RCP |
Refuse Collection Point |
RSE |
Resident Site Engineer |
SB |
Study Brief |
SR |
Sensitive Receiver |
TMEIA |
Technical Memorandum on the EIA Ordinance |
TM |
Technical Memorandum |
TPH |
Total Petroleum Hydrocarbons |
URA |
Urban Renewal Authority |
WDO |
Waste Disposal Ordinance |
WP1 |
Working Paper 1 |
a) the
overall acceptability of any adverse environmental consequences that are likely
to arise as a result of the proposed Project;
b) the
conditions and requirements for the detailed design and/or demolition of the
proposed project to mitigate against adverse environmental consequences and
potential safety and health hazards wherever practicable;
c) the
acceptability of residual impacts after the proposed mitigation measures are
implemented.
a)
to describe the proposed
project and associated works together with the requirements for carrying out
the proposed project;
b)
to identify and describe the
elements of the community and environment likely to be affected by the proposed
project and/or likely to cause adverse impacts to the proposed project,
including both the natural and man-made environment;
c)
to identify and qualify
emission sources and determine the significance of impacts on sensitive
receivers and potential affected uses;
d)
to propose the provision of infrastructure
or mitigation measures so as to minimise pollution, environmental disturbance
and nuisance during demolition;
e)
to identify, predict and
evaluate the residual (i.e. after practicable mitigation) environmental impacts
and the cumulative effects expected to arise during the demolition of the
facilities in relation to the sensitive receivers and potential affected uses;
f)
to identify, assesses and
specify methods, measures and standards, to be included in the detailed design
and demolition of the project which are necessary to mitigate these
environmental impacts and reducing them to acceptable levels;
g)
to investigate the extent of
side-effects of proposed mitigation measures that may lead to other forms of
impacts;
h)
to identify constraints
associated with the mitigation measures recommended in the EIA study; and
i)
to design and specify the
environmental monitoring and audit requirements, if required, to ensure the
implementation and the effectiveness of the environmental protection and
pollution control measures adopted.
· Section 2 Study Area, Sensitive Receivers, Constraints and General Approach to Demolition.
· Section 3 Asbestos Control.
· Section 4 Land Contamination.
· Section 5 Noise.
· Section 6 Air Quality.
· Section 7 Waste Management.
· Section 8 Environmental Monitoring and Audit.
·
Section 9 Conclusions and Recommendations.
·
·
·
· Car / lorry park (CP);
·
FEHD Refuse
Collection Point (RCP); and USD
·
Table
2.1 Structures to be demolished at
KTCDA
Building |
Brief Description |
KTIP Chimneys |
Two reinforced concrete chimneys, 60m high, 3.5m in diameter. |
|
Reinforced concrete structure of approximately 3,025m² on plan Refuse Pier |
|
5-storey reinforced concrete structures of approximately 9,500m² on plan, including, Reception Pier |
|
Boiler House
and One reinforced concrete chimney, 25m high, 3m in diameter. |
|
Offices and
Vehicle Inspection Bays. Overall size is approximately 600m² on plan. Diesel storage
tank and lubrication oil store |
|
Single Storey Transformer House (adjacent to lairage) |
|
Open landscaped area with street lighting and sitting areas |
Sai See Street Refuse Collection Point |
Prefabricated steel and concrete structure, single storey. * |
*See Section 2.2
Residential, Government, Institutional and Community
· Kennedy Town Police Married Quarters currently overlooks the Site. The premises are scheduled to be vacated but parts of the buildings will potentially be occupied up to March 2002.
· The Mount Davis Cottage Area has been vacated.
·
The Housing
Society development at .mid
·
There are
occupied residential buildings at
Other Sensitivities near KTCDA
NWFB
RCP
Road Traffic
Marine Traffic
Other Issues
·
Top down methods by jack
hammer, percussive or hydraulic breakers;
·
Wrecking Ball;
·
Implosion;
·
Saw Cutting and Drilling;
·
Non
explosive demolition agents (NEDA);
·
Thermal lance; and
· Water jet.
Reception Piers
Preferred Methodology
Marine Barges