Issue and revision record

This document is issued for the party which commissioned it and for specific purposes connected with the above-captioned project only. It should not be relied upon by any other party or used for any other purpose.

We accept no responsibility for the consequences of this document being relied upon by any other party, or being used for any other purpose, or containing any error or omission which is due to an error or omission in data supplied to us by other parties.

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Revision

Date

Originator

Checker

Approver

Description

Standard

A

12 December  2014

Edward Leung / Brandon Wong

Terence Kong

Eric Ching

Issue to Client

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Contents

 

 

 

Chapter    Title                                                                                                                           Page

1.1______ Background_____________________________________________________________________ 1

1.2______ Project Organization______________________________________________________________ 2

1.3______ Environmental Status in the reporting period____________________________________________ 2

1.4______ Summary of EM&A Requirements____________________________________________________ 2

2.1______ Introduction_____________________________________________________________________ 5

2.2______ Air Quality______________________________________________________________________ 5

2.3______ Construction Noise_______________________________________________________________ 8

2.4______ Water Quality___________________________________________________________________ 10

2.5______ Ecology_______________________________________________________________________ 13

2.6______ Landscape and Visual____________________________________________________________ 14

3.1______ Impact Monitoring Schedule_______________________________________________________ 18

3.2______ Results of Impact Monitoring_______________________________________________________ 18

4.1______ Monitoring of Birds______________________________________________________________ 24

4.2______ Monitoring of Herpetofauna________________________________________________________ 24

4.3______ Monitoring of Dragonflies and Butterflies______________________________________________ 25

4.4______ Monitoring of Mammals___________________________________________________________ 25

4.5______ Monitoring of Water Quality________________________________________________________ 25

4.6______ Management Activities___________________________________________________________ 25

4.7______ Summary_____________________________________________________________________ 25

5.1______ Site Inspections_________________________________________________________________ 27

5.2______ Construction Phase Audit Summary_________________________________________________ 27

6.1______ Site Inspection__________________________________________________________________ 31

6.2______ Solid and Liquid Waste Management Status___________________________________________ 31

6.3______ Status of Environmental Licenses and Permits_________________________________________ 31

6.4______ Recommended Mitigation Measures_________________________________________________ 32

7.1______ Record on Non-compliance of Action and Limit Levels___________________________________ 34

7.2______ Record on Environmental Complaints received_________________________________________ 36

7.3______ Record on Notifications of Summons and Successful Prosecution__________________________ 36

7.4______ Review of Reasons for and Implications of Non-compliance, Complaints, Summons and Prosecutions 36

7.5______ Follow-up Actions Taken__________________________________________________________ 36

7.6______ Cumulative Statistics for Complaints, Notifications of Summons and Successful Prosecutions_____ 37

8.1______ Site Preparatory Works and Construction Works for the Coming Month_______________________ 38

8.2______ Key Issues for the Coming Months__________________________________________________ 38

8.3______ Monitoring Schedule for the Coming Month____________________________________________ 38

8.4______ Conclusions and Recommendations_________________________________________________ 40

 

 

Tables

Table 1.1:__ Summary of Impact EM&A Requirements 2

Table 1.2:__ Environmental Monitoring and Audit Schedule for November 2014_ 4

Table 2.1:__ Air Quality Monitoring Parameters, Frequency and Duration_ 5

Table 2.2:__ Air Monitoring Stations 5

Table 2.3:__ TSP Monitoring Equipment 6

Table 2.4:__ Noise Monitoring Parameters, Frequency and Duration_ 9

Table 2.5:__ Noise Monitoring Stations 9

Table 2.6:__ Noise Monitoring Equipment 9

Table 2.7:__ Water Quality Monitoring Parameters, Frequency and Duration_ 11

Table 2.8:__ Water Quality Monitoring Stations 11

Table 2.9:__ Water Quality Monitoring Equipment 11

Table 2.10:_ Analytical Methods applied to Water Quality Samples 11

Table 2.11:_ Detection Limits for Water Quality Determinants 12

Table 2.12:_ Summary of Construction Phase Ecological Monitoring for the Wo Shang Wai Wetland Restoration Area (WRA) 14

Table 2.13:_ Construction and Operation Phase Audit Checklist 15

Table 2.14:_ Proposed Construction Phase Mitigation Measures 16

Table 2.15:_ Proposed Operation Phase Mitigation Measures 16

Table 3.1:__ Summary of 1-hour TSP Monitoring Results 18

Table 3.2:__ Summary of 24-hour TSP Monitoring Results 19

Table 3.3:__ Summary of Construction Noise Monitoring Results 20

Table 3.4:__ Summary of Water Quality Monitoring Results 21

Table 4.1:__ Summary of Ecological Monitoring in WRA and Survey Area_ 26

Table 5.1:__ Construction and Operation Phase Audit Summary 27

Table 6.1:__ Summary of Site Inspections and Recommendations 31

Table 6.2:__ Status of Environmental Submissions, Licenses and Permits 32

Table 7.1:__ Summary of Exceedances in Water Quality 34

Table 7.2:__ Statistics for Complaints, Notifications of Summons and Successful Prosecutions 37

Table 8.1:__ Tentative Environmental Monitoring and Audit Schedule for December 2014_ 39

 

 

 

List of Figures

Figure 1.1             General Layout Plan of the Project Site

Figure 2.1             Locations of Air Quality Monitoring Stations

Figure 2.2             Locations of Noise Monitoring Stations

Figure 2.3             Locations of Water Quality Monitoring Stations

Figure 4.1             Survey Area and Transect Walked

 

List of Appendices

Appendix A           Project Organization Chart

Appendix B           Tentative Construction Programme

Appendix C           Action and Limit Levels for Construction Phase

Appendix D           Event and Action Plan for Air Quality, Noise and Water Quality

Appendix E           Calibration Certificates

Appendix F           Graphical Plots of the Monitoring Results

Appendix G           Weather Conditions during the Monitoring Period

Appendix H           Ecological Monitoring Conducted

Appendix I             Summary of Bird Surveys Conducted

Appendix J            Summary of Herpetofauna, Mammal and Insect Surveys Conducted

Appendix K           Summary of Monitoring of Water Quality and Soil Quality associated with Ecological Monitoring Conducted

Appendix L           Environmental Mitigation Measures - Implementation Status

Appendix M          Landscape and Visual Audit Photos

 

 

 

 

 


Executive Summary

 

 

 

Mott MacDonald Hong Kong Ltd. (“MMHK”) has been commissioned by Heng Shung Construction Co. Ltd. to undertake the Environmental Team (ET) services to carry out environmental monitoring and audit (EM&A) for both pre-construction and construction phases of the Proposed Comprehensive Development at Wo Shang Wai, Yuen Long.

This is the 55th EM&A report submitted under the Condition 4.5 of Environmental Permit No. EP-311/2008/D. This report summarises the findings on EM&A during the period from 1 to 30 November 2014.

Exceedance of Action and Limit Levels

There was no breach of Action or Limit levels for Air Quality (1-hr TSP and 24-hr TSP) and Noise level (as Leq) in the reporting month.

During November 2014, one exceedance of DO was observed at MP3.  No exceedance was observed at MP4, MP5 and MP6.  

The summary of measured water quality is presented in Section 3.2.3.

Investigations have been carried out to identify the causes of exceedance. From investigation, the Contractor has implemented water quality mitigation measures as recommended in the EIA report. With external factors affecting the adjacent environments, such as natural variations, pond fish culture activities and rainfall, the exceedances were considered not due to the project construction works.

Implementation of Mitigation Measures

Site audits were carried out on 4, 11,  18 and 26 November 2014 to confirm the implementation measures undertaken by the Contractor in the reporting month. The outcomes are presented in Section 6 and the status of implementation of mitigation measures in the site is shown in Appendix L.

Record of Complaints

There was no new record of complaints received in the reporting month.

Record of Notification of Summons and Successful Prosecution

There was no record of Notification of summons and successful prosecution in the reporting month.

Reporting Changes

There was no reporting change in the reporting month.

Future Key Issues

The major site works scheduled to be commissioned in the coming three months include site formation, foundation work and pond drainage management in the Wetland Restoration Area (to lower the water level and remove unwanted species in the pond). Potential environmental impacts due to the construction activities, including air quality, noise, water quality, ecology and landscape and visual, will be monitored.

Environmental mitigation measures will be implemented on site as recommended and weekly site audits will be carried out to ensure that the environmental conditions are acceptable.

 

 


1             Introduction

 

 

 

1.1            Background

In March 2005, the Project Proponent, Profit Point Enterprises Limited, acquired the development site at Wo Shang Wai in Yuen Long. An Environmental Impact Assessment (EIA) was then carried out and approved under the EIA Ordinance (EIAO), and the Environmental Permit (EP-311/2008) for construction of the comprehensive development in Wo Shang Wai was first granted by EPD on 9 September 2008 and has been subsequently varied, with the current version (EP-311/2008/D) issued by EPD on 20 March 2013.

The Project involves the residential development and associated infrastructure and wetland restoration area and linear landscape area. The construction works under the Environmental Permit commenced on 12 May 2010. The site formation construction works of the Wetland Restoration Area (hereafter WRA) were completed on 15 November 2010, while the 30-month establishment period of the WRA was concluded in August 2012 – this indicated that planting works as scheduled in the approved Wetland Restoration and Creation Scheme (WRCS; Nov 2009) was complete, except along the western and southern boundary where the planting is affected by the existing site boundary and noise barrier, and for which a Variation to Environmental Permit (EP-311/2008/C) to defer planting at the location was approved. The current valid EP (EP-311/2008/D) includes specific mitigation measures to minimise certain identified noise impacts during the operation phase.

Mott MacDonald Hong Kong Ltd. (“MMHK”) has been commissioned by the Contractor, Heng Shung Construction Co. Ltd., to undertake the Environmental Team (ET) services to carry out environmental monitoring and audit (EM&A) for both pre-construction and construction phases of the Proposed Comprehensive Development at Wo Shang Wai, Yuen Long.

According to the EP Condition 4.5, the monthly EM&A Report shall be submitted to the Director within two weeks after the end of the reporting month. This report summarises the findings during the period from 1 to 30 November 2014.

1.2            Project Organization

The organisation chart and lines of communication with respect to the on-site environmental management structure together with the contact information of the key personnel are shown in Appendix A.

1.3           Environmental Status in the reporting period

During the reporting month, construction works of the Project undertaken include:

¡  Site formation

¡  Foundation work

¡  Pond drainage management in the Wetland Restoration Area (to lower the water level and remove unwanted species in the pond)

The Construction Works Programme of the Project is provided in Appendix B. The general layout plan of the Project site is shown in Figure 1.1.

1.4           Summary of EM&A Requirements

The EM&A programme requires environmental monitoring of air quality, noise, water quality, ecology and landscape and visual as specified in the approved EM&A Manual.

A summary of impact EM&A requirements is presented in Table 1.1 below:

Table 1.1:      Summary of Impact EM&A Requirements

Parameters

Descriptions

Locations

Frequencies

Air Quality

24-Hour TSP

ASR1, ASR2A, ASR3, ASR4

Once every 6 days

1-Hour TSP

ASR1, ASR2A, ASR3, ASR4

3 times every 6 days

Noise

Leq, 30min

NSR1, NSR3, NSR5, NSR7

Weekly

Water Quality

Dissolved Oxygen (DO), temperature, pH, suspended solids (SS) and Biological Oxygen Demand (BOD)

MP1 to MP6

3 days per week

Ecology

Birds

Within the Project Area and Assessment Area of 500m

Weekly

Dragonflies and Butterflies

Within the Project Area and Assessment Area of 500m

Once per month during Mar and Sep to November, and twice per month during Apr to Aug

Herpetofauna

Within the Project Area and Assessment Area of 500m

Once per month during Apr to Nov

Water quality of Wetland Restoration Area (WRA)

WRA

After filling of WRA with water, monthly for in situ water quality and every size months (end of wet season and end of dry season) for laboratory testing

Site Inspections

Within the Project Area and Assessment Area of 500m

Weekly

Landscape and Visual

Auditing of protection of existing trees, the transplanting of existing trees, the creation of new wetland, the planting of new trees and shrubs and other landscape and visual mitigation measures

 CM1 to CM10 and OM1 to OM7 within the Project Area

Site inspections once every two weeks during construction phase; once every two months during operational phase

The Environmental Quality Performance Limits for air quality, noise and water quality are shown in Appendix C.

The Event and Action Plan for air quality, noise and water quality are shown in Appendix D.

The monitoring schedule for the reporting month is shown in Table 1.2 below

Table 1.2:      Environmental Monitoring and Audit Schedule for November 2014

2             Impact Monitoring Methodology

 

 

 

 

2.1            Introduction

For air quality, construction noise and water quality, ecology, landscape and visual monitoring methodology, including the monitoring locations, monitoring equipment used, monitoring parameters, and frequency and duration, etc, are detailed in this Chapter.

2.2            Air Quality

2.2.1        Monitoring Parameters, Frequency and Duration

In accordance with the EM&A Manual, 1-hour and 24-hour TSP levels monitoring are to be conducted during the construction phase. Table 2.1 summarizes the monitoring parameters, frequency and duration of air quality monitoring.

Table 2.1:      Air Quality Monitoring Parameters, Frequency and Duration

Monitoring Stations

Parameter

Frequency and Duration

ASR1, ASR2A, ASR3 & ASR4

24-hour TSP

At least once in every six-days

1-hour TSP

3 times every six-days

2.2.2        Monitoring Locations

The four air quality monitoring stations were established in the EM&A manual and were slightly adjusted during the baseline monitoring phase. Locations of the agreed air quality monitoring stations are listed in Table 2.2 and as shown in Figure 2.1.

Table 2.2:      Air Monitoring Stations

Monitoring Stations

Locations

ASR1

Works Site Boundary

ASR2A

At the rooftop of refuse collection point, which is located at the southwest of the project area

ASR3

At the commercial centre at Palm Springs, which is located at the south of the project area

ASR4

Works Site Boundary

2.2.3        Monitoring Equipment

Continuous 24-hour TSP air quality monitoring is conducted using High Volume Sampler (HVS) (Model: GMWS-2310 Accu-vol). The HVS meets all the requirements of the EM&A Manual. Portable direct reading dust meters were used to carry out the 1-hour TSP monitoring. Table 2.3 summarizes the equipment used in the impact air quality monitoring.

Table 2.3:      TSP Monitoring Equipment

Equipment

Model

24-hr TSP monitoring

High Volume Sampler

GMWS 2310 Accu-vol

Calibrator

GMW 25

1-hr TSP monitoring

Portable direct reading dust meter

AM510 SidePak Personal Aerosol Monitor

Dust Trak 8520

2.2.4        Monitoring Methodology

2.2.4.1      24-hour TSP Monitoring

Installation

The HVS was installed in the vicinity of the air sensitive receiver.  The following criteria were considered in the installation of the HVS.

Preparation of Filter Papers

·         Glass fibre filters, were labelled and sufficient filters that were clean and without pinholes were selected.

·         All filters were equilibrated in the conditioning environment for 24 hours before weighing. The conditioning environment temperature was around 25 °C and not variable by more than ±3 °C with relative humidity (RH) < 50 % and was not variable by more than ±5 %.  A convenient working RH was 40 %.

Field Monitoring

·         The power supply was checked to ensure the HVS works properly.

·         The filter holder and the area surrounding the filter were cleaned.

·         The filter holder was removed by loosening the four bolts and a new filter, with stamped number upward, on a supporting screen was aligned carefully.

·         The filter was properly aligned on the screen so that the gasket formed an airtight seal on the outer edges of the filter.

·         The swing bolts were fastened to hold the filter holder down to the frame.  The pressure applied should be sufficient to avoid air leakage at the edges.

·         The shelter lid was closed and was secured with the aluminium strip.

·         The HVS was warmed-up for about 5 minutes to establish run-temperature conditions.

·         A new flow rate record sheet was set into the flow recorder.

·         The flow rate of the HVS was checked and adjusted at around 1.1 m3/min. The range specified in the EM&A Manual was between 0.6-1.7 m3/min.

·         The programmable timer was set for a sampling period of 24 hrs + 1 hr, and the starting time, weather condition and the filter number were recorded.

·         The initial elapsed time was recorded.

·         At the end of sampling, the sampled filter was removed carefully and folded in half length so that only surfaces with collected particulate matter were in contact.

·         It was then placed in a clean plastic envelope and sealed.

·         All monitoring information was recorded on a standard data sheet.

·         Filters were sent to a HOKLAS accredited laboratory for analysis.

Maintenance and Calibration

·         The HVS and its accessories are maintained in good working condition, such as replacing motor brushes routinely and checking electrical wiring to ensure a continuous power supply.

·         HVSs were calibrated at two-month intervals.

·         Calibration records for HVSs are shown in Appendix E.

2.2.4.2      1-hour TSP Monitoring

Field Monitoring

The measuring procedures of the 1-hour dust meter are in accordance with the Manufacturer’s Instruction Manual as follows:

·         Set POWER to “ON”, push BATTERY button, make sure that the meter’s indicator is in the range with a red line and allow the instrument to stand for about 3 minutes (Then, the air sampling inlet has been capped).

·         Push the knob at MEASURE position.

·         Push “O-ADJ” button. (Then meter’s indication is 0).

·         Push the knob at SENSI ADJ position and set the meter’s indication to S value described on the Test Report using the trimmer for SENSI ADJ.

·         Pull out the knob and return it to MEASURE position.

·         Push “START” button.

Maintenance and Calibration

·         The 1-hour dust meter would be checked at 3-month intervals and calibrated at 1-year intervals throughout all stages of the air quality monitoring.

·         Calibration records for direct dust meters are shown in Appendix E.

2.3            Construction Noise

2.3.1        Monitoring Parameters, Frequency and Duration

Following the requirements in the EM&A Manual for noise, noise monitoring has to be carried out during the construction phase. Continuous noise monitoring for the A-weighted levels Leq, L10 and L90 is undertaken once per every week.

Table 2.4 summarizes the monitoring parameters, frequency and duration of air quality monitoring.

Table 2.4:      Noise Monitoring Parameters, Frequency and Duration

Monitoring Stations

Parameter

Frequency and Duration

NSR1, NSR3, NSR5, NSR7

Leq, L90 & L10

Once every week

2.3.2        Monitoring Locations

The four noise quality monitoring stations were established in the EM&A manual and were slightly adjusted during the baseline monitoring phase. Locations of the agreed noise quality monitoring stations are listed in Table 2.5 and as shown in Figure 2.2.

Table 2.5:      Noise Monitoring Stations

Monitoring Stations

Locations

Type of measurement

NSR1

Noise monitoring equipment was set up near the boundary wall at Palm Springs.

Free-field

NSR3

The monitoring station was located next to the guard house at Palm Springs.

Facade

NSR5

The monitoring station was located within the work site boundary.

Free-field

NSR7

The monitoring station was located near the boundary wall of the house of Mai Po San Tsuen.

Free-field

2.3.3        Monitoring Equipment

Integrating Sound Level Meter will be used for noise monitoring. It is a Type 1 sound level meter capable of giving a continuous readout of the noise level readings including equivalent continuous sound pressure level (Leq) and percentile sound pressure level (Lx). They comply with International Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1). Table 2.6 summarizes the noise monitoring equipment model being used.

Table 2.6:      Noise Monitoring Equipment

Monitoring Stations

Equipment Model

Integrating Sound Level Meter

Calibrator

NSR1

Rion NL-52

Rion NC-73

NSR3

NSR5

NSR7

2.3.4        Monitoring Methodology

Field Monitoring

- frequency weighting: A

- time weighting: Fast

- time measurement: 30 minutes intervals (between 07:00 and 19:00)

Maintenance and Calibration

2.4            Water Quality

2.4.1        Monitoring Parameters, Frequency and Duration

In accordance with the requirements in the EM&A Manual for water quality, water quality parameters including Dissolved Oxygen (DO), temperature, pH, turbidity, suspended solids (SS) and Biochemical Oxygen Demand (BOD) have to be monitored at designated monitoring stations during construction of the Project. DO, temperature and pH were measured in-situ whereas SS and BOD were analysed in a laboratory. The measurements should be taken at all designated monitoring stations, three days per week. The interval between any two sets of monitoring was not less than 36 hours. Table 2.7 summarizes the monitoring parameters, frequency and duration of water quality monitoring.

Table 2.7:      Water Quality Monitoring Parameters, Frequency and Duration

Monitoring Stations

Parameter

Frequency and Duration

MP1, MP2, MP3, MP4, MP5 & MP6

DO, temperature, pH, SS, turbidity, BOD

Three days every week

2.4.2        Monitoring Locations

The six water quality monitoring stations were established in the EM&A manual. Locations of the agreed water quality monitoring stations are listed in Table 2.8 and as shown in Figure 2.3..

Table 2.8:      Water Quality Monitoring Stations

Monitoring Stations

Easting

Northing

MP1

838 730.50

822 862.25

MP2

838 933.26

823 247.41

MP3

839 107.17

823 596.84

MP4

839 286.14

823 638.55

MP5

839 134.35

823 722.99

MP6

839 063.02

823 842.25

2.4.3        Monitoring Equipment

The Water Quality Monitoring Equipment and Analytical Methods applied to Water Quality Samples are given in Table 2.9 and Table 2.10 respectively. Details of which are discussed below.

Table 2.9:      Water Quality Monitoring Equipment

Equipment

Model

Equipment/Serial Number

Conductivity, Dissolved oxygen, pH, Salinity and Temperature Measuring Meter

YSI Professional Plus

09K100735

Turbidity Meter

Hach 2100Q IS/Hach 2100Q

09120C000514

Global Positioning System (GPS)

Garmin eTrex Vista

ENO 007

Table 2.10:    Analytical Methods applied to Water Quality Samples

Determinant, unit

Standard Method

Total Suspended Solids, mg/L

In house method based on APHA 2540D; ALS Method Code: EA-025

Biochemical Oxygen Demand (BOD), mg/L

In house method based on APHA 5210B; ALS Method Code: EP-030

All in-situ monitoring instruments were checked, calibrated and certified by a laboratory accredited under HOKLAS or any other international accreditation scheme before use.

Dissolved Oxygen (DO), temperature and pH measuring equipment

A portable, weatherproof multiparameter instrument (YSI Professional Plus) was used in the monitoring. It can be capable for measuring dissolved oxygen (DO), pH, and temperature simultaneously with the following limits:

·         a dissolved oxygen level in the range of 0-50 mg/L and 0-500 % saturation;

·         a temperature of -5 to 45 degree Celsius; and

·         pH value of 0-14 with 0.1 as the base unit.

Turbidity Measurement Instrument

Portable and weatherproof turbidity meter (HACH model 2100Q) was used during impact monitoring. It has a photoelectric sensor capable of measuring turbidity between 0-1000 NTU. Response of the sensor was checked with certified standard turbidity solutions before the start of measurement.

Global Positioning System

A hand-held GPS navigator (Garmin eTrex Vista) was used to identify the designated monitoring stations prior to water sampling.

Suspended Solids and BOD Measurements (Sample Containers and Storage)

Water samples for SS analysis were stored in high density polythene bottles with no preservative added, packed in ice (cooled to 4oC without being frozen), delivered to the laboratory, and analysed as soon as possible after collection. Analysis was carried out in a HOKLAS accredited laboratory.

2.4.4        Detection Limit

The limits of detection for the in-situ and laboratory measurements are shown in Table 2.11.

Table 2.11:    Detection Limits for Water Quality Determinants

Determinant

Limit of Detection

Dissolved Oxygen

0.1 mg/L

Temperature

0.1 degree Celsius

pH

0.01 unit

Turbidity

0.1 NTU

Suspended Solids

1 mg/L

BOD

2 mg/L

2.4.5        Monitoring Methodology

In situ measurement

All pH meters, DO/temperature meters had been checked and calibrated prior to use. Standard buffer solution of at least two pH levels (either pH 4 and pH 7, or pH 7 and pH 10) had been used for calibration of the instrument before and after use.

DO meters had been calibrated by a laboratory accredited under HOKLAS or any other international accreditation scheme, and subsequently re-calibrated at three-monthly intervals throughout all stages of the water quality monitoring. Responses of sensors and electrodes had been checked with certified standard solutions before each use. Wet bulb calibrations for all DO meters had been carried out before measurement at each monitoring location. For the on-site calibration of field equipment, BS 127:1993, "Guide to field and on-site test methods for the analysis of waters" had been observed.

Measurements shall be at three water depths, namely, 1m below water surface, mid-depth and 1m above stream bed/pond bed, except where the water depth less that 6m, the mid-depth station maybe omitted. Should the water depth be less than 3m, only the mid-depth station will be monitored.

Replicates in-situ measurements and samples collected from each independent monitoring event are required for all parameters to ensure a robust statistically interpretable dataset.

Water Samples Preparation and Analysis

For collection of water sampling within the water courses, a 500ml clean plastic beaker was used. After collection, the water samples were stored in high-density polythene bottles. The sample container was rinsed with a portion of the water sample. The water sample was then transferred to the container, labelled with a unique sample ID and sealed with a screw cap. The water samples were stored in a cool box maintained at 4oC. The water samples were then delivered to a local HOKLAS-accredited laboratory (ALS) on the same day for analysis.

The testing methods of testing parameters as recommended by EIA or required by EPD, with the QA/QC results are in accordance with the requirement of HOKLAS or international accredited scheme.

The calibration certificates for equipment used for in-situ monitoring of water quality are attached in Appendix E.

2.5            Ecology

2.5.1        Monitoring Parameters, Frequency and Duration

Target species and certain other fauna will be monitored within the Project Area and Assessment Area during the wetland and residential construction phase. This will be important to ensure that any unexpected events or impacts either on- or off-site are quickly identified so that remedial action can be taken.  The groups to be monitored and frequency of monitoring are shown in Table 2.12. 

Table 2.12:    Summary of Construction Phase Ecological Monitoring for the Wo Shang Wai Wetland Restoration Area (WRA)

Species / Parameter

Construction Phase Ecological Monitoring

Birds

Weekly (including Assessment Area).

Dragonflies and Butterflies

Once per month during March and September to November, and twice per month during April to August.

Herpetofauna

Once per month during April to November.

Water Quality

After filling of WRA with water, monthly for in situ water quality and every six months (end of the wet season and end of the dry season) for laboratory testing.

Site Inspections

Weekly.

2.5.2        Monitoring Locations and Methodology

Ecological monitoring locations during construction phase are shown in Figure 4.1 and the methodology for ecological monitoring is detailed in Section 4. 

2.6            Landscape and Visual

2.6.1        Monitoring Parameters, Frequency and Duration

All measures undertaken by both the Contractor and the specialist Landscape Sub-Contractor during the construction phase and first year of the operational phase shall be audited by a Registered Landscape Architect, as a member of the ET, on a regular basis to ensure compliance with the intended aims of the measures.  Site inspections should be undertaken at least once every two weeks throughout the construction period and once every two months during the operational phase.

The broad scope of audit is detailed below but should also be undertaken with reference to the more specific checklist provided in Table 2.13 below. Operational phase auditing will be restricted to the last 12 months of the establishment works of the landscaping proposals and thus only the items below concerning this period are relevant to the operational phase.

·                     The extent of the agreed works area should be regularly checked during the construction phase. Any trespass by the Contractor outside the limit of the works, including any damage to existing trees and woodland shall be noted;

·