Environmental
Impact Assessment (EIA) Report
for
Decommissioning
of West Portion of the Middle Ash Lagoon at Tsang Tsui, Tuen Mun
Prepared
By:
Allied Environmental Consultants Ltd.
Table 2.1 Construction Programme
Table 2.2 Construction Site Plant Equipment Schedule
Table 3.1 Hong Kong Air Quality Objectives (AQOs)
Table 3.2 Air Pollutant Concentration measured at CLP’s Lung Kwu Tan Air Quality Monitoring Station
Table 3.3 Air Pollutant Concentration measured at AA’s Lung Kwu Chau/Sha Chau Air Quality
Monitoring Station
Table 3.4 Identified Air Sensitive Receivers
Table 3.5 Construction Programme of the Project and other Approved EIA
Table 3.6 Construction Works and Plant Equipment Schedule
Table 4.1 Trace Elements Concentration in PFA from Castle Peak and
Other Sources
Table 4.2 Toxicity Factor for COPCs
Table 4.3 Calculated Cancer Risk (Unmitigated)
Table 4.4 Calculated Long term Non-carcinogenic Hazard (Unmitigated)
Table 4.5 Exposure
Limits/Reference Levels for COPCs Acute Exposure
Table 4.6 Cumulative
Non-carcinogenic Health Impact Arising from Acute COPC Exposure (Unmitigated)
Table 4.7 Calculated Long-term Non-carcinogenic Hazard (mitigated)
Table 4.8 Cumulative Acute Non-carcinogenic Health Hazard (mitigated)
Table 4.9 Radium Equivalent Activities of PFA, FBA and Coal from the
Castle Peak Power Station
Table 4.10 Radium Equivalent Activities of PFA, FBA and Coal from Power
Plant in other Countries
Table 4.11 Summary of Estimates of Annual Effective Dose Equivalents
Table 5.1 Daytime Construction Noise Standards
Table 5.2 Representative Noise Sensitive Receivers (NSRs)
Table 5.3 Predicted Maximum Construction Noise Levels at the NSRs
Table 6.1 Summary of Water Quality Objectives for Deep Day WCZ
Table 6.2 Summary of Water Quality Monitoring Results for Tsang Kok
Stream in 2012
Table 6.3 Summary of Marine Water Quality in Outer Deep Bay in 2012
Table 7.1 Government Waste Disposal Facilities for Construction Waste
Table 9.1 Avifauna species of conservation concern previously recorded
within the current Study Area
Table 9.2 Summary of breeding activities and abundance of Little Grebe
recorded in the ash lagoons during previous studies
Table 9.3 Summary of observations of Little Grebe in the Middle Ash Lagoon
(STF EM&A)
Table 9.4a Ecological Survey Programme (2012)
Table 9.5 Habitats Recorded within the Study Area
Table 9.6 Summary of observations of Little Grebe in the Middle and
West Ash Lagoons during additional surveys (2013)
Table 9.7 Abundance, number of species, Shannon diversity index (H’)
and evenness (J) of epifauna in the rocky shore (mean of two-day survey)
Table 9.8 Evaluation of Ash Lagoon
Table 9.9 Evaluation of Grassland/Shrubland
Table 9.10 Evaluation of Orchard
Table 9.11 Evaluation of Plantation
Table 9.12 Evaluation of Woodland
Table 9.13 Evaluation of Watercourse
Table 9.14 Evaluation of Urbanised/Disturbed
Table 9.15 Evaluation of Seawall and Coastal Waters
Table 9.16 Evaluation of floral species of conservation concern within
the Study Area
Table 9.17 Evaluation of faunal species of conservation concern within
the Study Area
Table 9.18 Estimated Habitat Loss
Table 9.19 Construction Phase Impacts
Table 9.20 Overall Impacts to Habitats
Table 9.21 Overall Impacts to Flora and Fauna Species of Conservation
Concern during Construction Phases (species recorded by others only indicated
by “*”)
Table 10.1 Qualitative Risk Assessment Matrix
Table 10.2 Summary of General Categorization of Risk
Table 10.3 Generic Protection Measures for Planning Stage Categorization
Table 10.4 Definition of Control Terms
Table 10.5 Qualitative Risk Assessment Matrix
Table 10.6 Actions in the Event of Landfill Gas Detected in Confined
Areas
Figure 1.1 Site
Location of the Project
Figure 3.1 Locations
of the Air Sensitive Receivers
Figure 3.2 Hung
Shing Temple Site Visit Photos
Figure 4.1 Radionuclide
Content in the Samples
Figure 5.1 Noise
Assessment Areas
Figure 5.2 Locations
of the Noise Sensitive Receivers
Figure 6.1 Locations
of Water Sensitive Receivers
Figure 8.1 Aerial
Photo of Site (1982)
Figure 8.2 Aerial
Photo of Site (1992)
Figure 8.3 Aerial
Photo of Site (2002)
Figure 8.4 Aerial
Photo of Site (2012)
Figure 9.1 Location
of Aquatic Ecology Sensitive Receivers
Figure 9.2 Aerial
images of Ash Lagoons taken at various years and seasons
Figure 9.3a Fauna
Sampling Locations (2012)
Figure 9.3b Fauna
Sampling Locations (2013)
Figure 9.4a Habitat
Map and Locations of Species of conservation concern (except Little Grebe)
Figure 9.4b Habitat
Map and Locations of Little Grebe nests (May to July 2013)
Figure 9.6 Photos
of Species of Conservation Interest
Figure 10.1 Consultation
Zone of the Proposed WENT Landfill Extensions
Appendix
2.1 Retaining
Structure to Existing Slope along Water Channel
Appendix
2.2 Construction of Surface Drainage Outfall System
Appendix
4.1 CLP
Monitoring Results
Appendix 4.2 Detailed
Calculation of Emission Rate
Appendix
4.2a Detailed
Calculation of Radon Emission and Gamma Rate
Appendix 5.1 Noise
Source Emission Inventory
Appendix 9.1 Plant
Species Recorded Within the Study Area
Appendix 9.2 Bird
species and their abundance recorded within the Study Area
Appendix 9.3 Amphibian
and reptile recorded in the Study Area
Appendix 9.4 Mammal
recorded in the Study Area
Appendix 9.5 Dragonfly
and their abundance recorded within the Study Area
Appendix 9.6 Butterfly
and their abundance recorded within the Study Area
Appendix 9.7 Aquatic
fauna survey observations
Appendix 9.8 Intertidal
fauna survey observations
Appendix 12.1 Implementation
Schedule of Proposed Mitigation Measures