CONTRACT NO. SPW 25/2018
 

Environmental Team for

Relocation of Sha Tin Sewage Treatment Works to Caverns – Site Preparation

and Access Tunnel Construction  

 

Under Environmental Permit no. EP-533/2017

 
Monthly Environmental Monitoring & Audit Report
 
july 2019


CLIENTS:

PREPARED BY:

 

 

Drainage Services Department

 

 

 

Lam Environmental Services Limited

 

11/F Centre Point

181-185 Gloucester Road,

Wanchai, H.K.

 

Telephone: (852) 2882-3939

Facsimile: (852) 2882-3331

E-mail: info@lamenviro.com

Website: http://www.lamenviro.com

 

 

 

 

 

Certified by:



 

 

 

 

                                               

Derek LO

Environmental Team Leader

 

 

 

DATE:

 

 

13 August 2019

 

 


Table of contents

 

1      Introduction.. 5

1.1        Scope of the Report 5

1.2        Structure of the Report 5

2      Project Background.. 7

2.1        Background. 7

2.2        Scope of the Project and Site Description.. 7

2.3        Project Organization and Contact Personnel 8

2.4        Construction Activities. 8

3      Status of Regulatory Compliance.. 10

3.1        Status of Environmental Licensing and Permitting under the Project 10

3.2        Status of Submission under the EP- 533/2017. 10

4     Monitoring Requirements. 12

4.1        Air Monitoring. 12

4.2        Noise Monitoring. 14

5.     Monitoring Results. 18

5.1        Air Monitoring Results. 18

5.2        Noise Monitoring Results. 18

5.3        Waste Management 18

6.     Compliance Audit.. 20

6.1        Air Monitoring. 20

6.2        Noise Monitoring. 20

6.3        Review of the Reasons for and the Implications of Non-compliance. 20

6.4        Summary of action taken in the event of and follow-up on non-compliance  20

7.     Environmental Site Audit.. 21

8.    Complaints, Notification of Summons and Prosecution.. 22

9.     Conclusion.. 23


lIST OF TABLES

 

Table 2.1    Schedule 2 Designated Projects under this Project

Table 2.2     Contact Details of Key Personnel

Table 3.1     Summary of the current status on licences and/or permits on environmental protection pertinent to the Project

Table 3.2     Summary of submission status for Contract no. DC2018/05 under EP-533/2017

Table 4.1     Air Monitoring Station

Table 4.2     Air Quality Monitoring Equipment

Table 4.3     Action and Limit Level for Air Quality Monitoring

Table 4.4     Noise Monitoring Station

Table 4.5     Noise Monitoring Equipment

Table 4.6     Action and Limit Level for Noise Monitoring

Table 5.1     Details of Waste Disposal for Contract no. DC/2018/05

Table 8.1     Cumulative Statistics on Complaints

Table 8.2     Cumulative Statistics on Successful Prosecutions

Table 9.1     Construction Activities and Recommended Mitigation Measures in Coming Reporting Month

 

 

 

lIST OF FIGUREs

 

Figure 2.1     Project Layout

Figure 2.2     Project Organization Chart

Figure 4.1    Locations of Air Quality Monitoring Station

Figure 4.2    Locations of Noise Monitoring Station

 

 

 

lIST OF APPENDIces

 

Appendix 1.1    Transplantation Report

Appendix 3.1    Environmental Mitigation Implementation Schedule

Appendix 4.1    Action and Limit Level

Appendix 4.2    Copies of Calibration Certificates

Appendix 4.3    Wind data extracted from Sha Tin HKO Automatic Weather Station

Appendix 5.1    Monitoring Schedule for Reporting Month and Next Month

Appendix 5.2    Air Quality Monitoring Results and Graphical Presentations

Appendix 5.3    Noise Monitoring Results and Graphical Presentations

Appendix 5.4    Monthly Summary Waste Flow Table

Appendix 6.1    Event and Action Plans

Appendix 6.2    Summary for Notification of Exceedance

Appendix 8.1    Complaint Log

Appendix 9.1    Construction Programme of Individual Contracts


EXECUTIVE SUMMARY

        i.        This is the Environmental Monitoring and Audit (EM&A) Monthly Report – July 2019 of Relocation of Sha Tin Sewage Treatment Works to Caverns – Site Preparation and Access Tunnel Construction under Environmental Permit no. EP-533/2017 (Hereafter as “the Project”). This is the 5th EM&A report presenting the environmental monitoring findings and information recorded during the period of 1 July 2019 to 31 July 2019. The cut-off date of reporting is at the end of each reporting month.

 

       ii.        In the reporting month, the principal work activities conducted are as follow:

Contract no. DC/2018/05 - Relocation of Sha Tin Sewage Treatment Works to Caverns – Site Preparation and Access Tunnel Construction

·          Site Clearance

·          Construction of site office

·          Hoarding erection

·          Hand dig trial pit excavation

·          Root pruning and transplantation

·          Site entrance construction

·          Ground investigation

·          Excavation for temporary haul road construction

 

Air Quality Monitoring

      iii.        1-hour Total Suspended Particulates (TSP) monitoring would be conducted at five monitoring stations. The sampling frequency is 3 times in every 6 days.

     iv.        Air quality monitoring for the stations AM1 and AM2 were commenced on 12 April 2019 while

station AM5 was commenced on 18 April 2019. Air quality monitoring for the station AM4 was commenced on 3 May 2019 in the reporting period. AM3(A) is under liaison for approval.

      v.        No action or limit level exceedance was determined in the reporting period for the stations of AM1, AM2, AM4 and AM5.

 

Noise Monitoring

     vi.        Noise monitoring would be conducted at five noise monitoring stations once per week.

    vii.        Noise monitoring for stations CM4 and CM5 were commenced on 13 April 2019 and 18 April

2019 respectively. Noise monitoring for stations CM1 and CM3 were commenced on 2 May 2019 in the reporting period. CM2(A) is under liaison for approval.

   viii.        No action or limit level exceedance was determined in the reporting period for the stations of CM1, CM3, CM4 and CM5.

 

Site Inspections and Audit

     ix.        The Environmental Team (ET) conducted weekly site inspections for the Contract on 3, 10, 17 and 24 July 2019. IEC attended the joint site inspection on 24 July 2019. No non-compliance was found during the site inspection.

 

Complaints, Notifications of Summons and Successful Prosecutions

      x.        A public complaint regarding construction dust received by DSD on 29 July 2019 was subsequently referred to ET on 6 August 2019. The complaint under investigation by ET. Detail complaint log will be presented in coming monthly EM&A report.

 

Reporting Changes

     xi.        Based on method statement in the approved Protection and Transplantation Proposal, transplantation works of 1no. Aquilaria sinensis seedling (named as C0001), 8nos. Cibotium barometz (grouped as E0004) and 1no. Ania hongkongensis (named as H0002) were carried out by the Landscaped Specialist Contractor on 12 & 23 July 2019 respectively, the Transplantation Report is attached in the Appendix 1.1.

 

Future Key Issues

    xii.        In coming reporting months, the scheduled construction activities and the recommended mitigation measures are listed as follows:

 

Key Construction Works

Recommended Mitigation Measures

·         Site clearance, construction of site office, hoarding erection, construction of cycle track, ground investigation and excavation for temporary haul road

 

·         Root pruning and transplantation

 

 

·        Hand dig trial pit excavation

·        Hoarding and demolition of site office

·         Dust control during dust generating works;

·         Implementation of proper noise pollution control; and

·         Provision of protection to ensure no runoff out of site area or direct discharge into public drainage system.

·         Direct impact to plant species of conservation importance recorded in the vicinity of the construction sites shall be avoided

·         Excavation materials shall be well covered

·         Mitigation measures to dust and noise control should be provided to erection of hoarding and demolition of site office

 

1      Introduction

1.1          Scope of the Report

1.1.1.     Lam Environmental Services Limited (LES) has been appointed to work as the Environmental Team (ET) under Environmental Permit (EP) no. EP-533/2017 to implement the Environmental Monitoring and Audit (EM&A) programme as stipulated in the EM&A Manual of the approved Environmental Impact Assessment (EIA) Report for Relocation of Sha Tin Sewage Treatment Works to Caverns – Site Preparation and Access Tunnel Construction (Register No.: AEIAR-202/2016).

1.1.2.     In accordance with Clause 3.5 stated in EP-533/2017, 4 hard copies and 3 electronic copies of the Monthly EM&A Report shall be submitted to the Director within 2 weeks after the end of each reporting month throughout the entire construction period.

1.1.3.     In accordance with Section 13.4.1.1 of the Project EM&A Manual, the Monthly EM&A Report should be prepared and submitted to the Contractor, the IEC, the ER and EPD within 10 working days at the end of each reporting month, with the first report due the month after construction commences.

1.2          Structure of the Report

 

Section 1        Introduction – details the scope and structure of the report.

 

Section 2        Project Background – summarizes background and scope of the project, site description, project organization and contact details of key personnel during the reporting period.

 

Section 3        Status of Regulatory Compliance – summarizes the status of valid Environmental Permits / Licenses during the reporting period.

 

Section 4        Monitoring Requirements – summarizes all monitoring parameters, monitoring methodology and equipment, monitoring locations, monitoring frequency, criteria and respective event and action plan and monitoring programmes.

 

Section 5        Monitoring Results – summarizes the monitoring results obtained in the reporting period.

 

Section 6        Compliance Audit – summarizes the auditing of monitoring results, all exceedances environmental parameters.

 

Section 7        Environmental Site Audit – summarizes the findings of weekly site inspections undertaken within the reporting period, with a review of any relevant follow-up actions within the reporting period.

 

Section 8        Complaints, Notification of summons and Prosecution – summarizes the cumulative statistics on complaints, notification of summons and prosecution

 

Section 9        Conclusion

2      Project Background

2.1          Background

2.1.1.     The Relocation of Sha Tin Sewage Treatment Works (STSTW) to Caverns (the Project) is implemented so as to release the existing site, of a size about 28 hectares, for other uses.

2.1.2.     In May 2012, Drainage Services Department (DSD), the Project Proponent commenced a detailed feasibility study on “Relocation of Sha Tin Sewage Treatment Works to Caverns” (the Feasibility Study).  The findings of Feasibility Study affirmed that relocating the STSTW to caverns to be constructed at Nui Po Shan of A Kung Kok is technically feasible and financially viable.

2.1.3.     The Project is a Designated Project (DP) under the Environmental Impact Assessment Ordinance (EIAO).  An application for an Environmental Impact Assessment (EIA) Study Brief under section 5(1)(a) of the EIAO was submitted on 12 May 2014 with a Project Profile (No. PP-508/2014) for the Project.  An EIA Study Brief (No. ESB-273/2014) was issued in June 2014.  An EIA for the Project was then undertaken, as part of the Assignment, in accordance with this EIA Study Brief and the Technical Memorandum on Environmental Impact Assessment Process (EIAO-TM). The location of the Project is shown Figure 2.1.

 

2.2          Scope of the Project and Site Description

2.2.1.     The Project covers the following DP elements as specified in Schedule 2 of the EIAO (Cap.499), Table 2.1 summarises the DPs under this Project.

Table 2.1     Schedule 2 Designated Projects under this Project

Item

Designated Project

EIAO Reference

DP1

Sewage treatment works with an installed capacity of more than 15,000 m3 per day under Item F.1

Schedule 2, Part I,

DP2

Sewage treatment works under Item F.2

Ÿ   With an installed capacity of more than 5,000 m3 per day; and

Ÿ   A boundary of which is less than 200m from the nearest boundary of an existing or planned residential area, educational institution and health care institution.

Schedule 2 Part I

DP3

An activity for the reuse of treated sewage effluent from a treatment plant under Item F.4

Schedule 2 Part I

DP4

Underground rock caverns under Item Q.2

Schedule 2 Part I

DP5

An explosives depot in a standalone, purpose built building under Item K.10

Schedule 2 Part I;

DP6

Decommissioning of an explosives depot under Item 11

Schedule 2 Part II

 

2.3          Project Organization and Contact Personnel

2.3.1      Drainage Services Department is the overall project controllers for the Project. For the construction phase of the Project, Project Engineer, Contractor(s), Environmental Team and Independent Environmental Checker are appointed to manage and control environmental issues.

2.3.2      The proposed project organization and lines of communication with respect to environmental protection works are shown in Figure 2.2. Key personnel and contact particulars are summarized in Table 2.2:

Table 2.2 Contact Details of Key Personnel

Party

Role

Post

Name

Contact No.

Contact Fax

AECOM

Engineer’s Representative

Chief Resident Engineer

Mr .Leung Chi Man, Simon

6393 8645

3020 6780

China State Joint Venture

Contractor

Site Agent

Mr. KONG Ming, Elvis

9186 2081

2672 2501

Environmental Officer

Ms. CHIU Mei Yu, Gloria

9224 2413

Mott MacDonald Hong Kong Limited

Independent Environmental Checker (IEC)

Independent Environmental Checker (IEC)

Mr. Brandon Wong

2828 5875

2827 1823

Lam Environmental Services Limited

Environmental Team (ET)

Environmental Team Leader (ETL)

Mr. Derek Lo

2882 3939

2882 3331

 

2.4          Construction Activities

2.4.1      In the reporting month, the principal work activities conducted are as follow.

·          Site Clearance

·          Construction of site office

·          Hoarding erection

·          Hand dig trial pit excavation

·          Root pruning and transplantation

·          Site entrance construction

·          Ground investigation

·          Excavation for temporary haul road construction

 

2.4.2      In coming reporting months, the scheduled construction activities are listed as follows:

·          Site Clearance

·          Construction of site office

·          Hoarding erection

·          Hand dig trial pit excavation

·          Root pruning and transplantation

·          Site entrance construction

·          Ground investigation

·          Excavation for temporary haul road construction

·          Construction of cycle track

 

 

3      Status of Regulatory Compliance

3.1          Status of Environmental Licensing and Permitting under the Project

3.1.1.     A summary of the current status on licences and/or permits on environmental protection pertinent to the Project is shown in Table 3.1.

Table 3.1 Summary of the current status on licences and/or permits on environmental protection pertinent to the Project

Permits and/or Licences

Reference No.

Issued Date

Valid Period & Expiry Date

(dd-MM-yyyy to dd-MM-yyyy)

Status

Notification of Works Under APCO

442872

7/3/2019

N.A.

Valid

Discharge Licence

444024

 

 

Acknowledge receipt from EPD on 8 Apr 2019 (Application Ref.: 444024)

Billing account under Waste Disposal Ordinance

7033825

17/4/2019

N/A

Valid

Registration as a Chemical Waste Producer

5117-756-C4363-01

9/5/2019

N/A

Valid

Asbestos Abatement Licence

 

 

 

Nil

Construction Noise Permit

 

 

 

Nil

 

3.2          Status of Submission under the EP- 533/2017

3.2.1.     A summary of the current status on submission for Contract no. DC/2018/05 under EP-533/2017 is shown in Table 3.2.

Table 3.2 Summary of submission status for Contract no. DC2018/05 under EP-533/2017

 

EP Condition

Submission

Date of Submission

Condition 1.12

Notification of Commencement Date of Works

18 February 2019

Condition 2.12

Management Organization of Main Construction Companies

18 April 2019

Condition 2.14

Submission of Detailed Vegetation Survey Report and Protection and Transplantation Proposal

18 April 2019

Condition 2.15

Submission of Detailed Woodland Compensation Plan

TBC

Condition 2.18

Submission of Landscape & Visual Mitigation and Tree Preservation Plan(s)

18 April 2019

Condition 2.22

Submission of Measures to Mitigate Traffic Noise from Ma On Shan Road

18 April 2019

 

 

4         Monitoring Requirements

4.1          Air Monitoring

Air Quality Monitoring Stations

4.1.1.     Air monitoring stations AM1 and AM2 were setup and commencement of monitoring on 12 April 2019 while AM5 was setup and commencement of monitoring on 18 April 2019. Air quality monitoring for the station AM4 was commenced on 3 May 2019. AM3(A) is under liaison for approval, no monitoring for AM3(A) was conducted in the reporting period.

4.1.2.     Based on the Project baseline report, the air quality monitoring station AM3, Ma On Shan Tsung Tsin Secondary School was relocated to AM3(A), Kowloon City Baptist Church Hay Nien Primary School.

4.1.3.     Air quality monitoring station AM6 will commence at a later stage upon the commencement of the decommissioning and demolition of the existing Shatin Sewage Treatment Works. The proposal was verified by IEC and approved by EPD on 9 May 2019.

4.1.4.     The air monitoring stations for the Project are listed and shown in Table 4.1 and Figure 4.1.

Table 4.1 Air Monitoring Station

Monitoring Station ID

Monitoring Location

Level

(in terms of

no. of floor)

AM1

Ah Kung Kok Fishermen Village

G/F

AM2

Block H, Kam Tai Court

Roof

AM3(A)

Kowloon City Baptist Church Hay Nien Primary School

G/F (tentative)

AM4

Wellborn Kindergarten

G/F

AM5

The Neighbourhood Advice-Action Council Harmony Manor

Roof

 

Air Monitoring Parameters, Frequency and Duration

4.1.5.     One-hour TSP levels should be measured to indicate the impacts of construction dust on air quality.

4.1.6.     The sampling frequency of at least three times in every six-days should be undertaken when the highest dust impact occurs.

4.1.7.     Portable direct reading dust meter was proposed to use for 1-hour TSP level instead of HVS to

undertaking the air quality monitoring for the project at the stations of AM1, AM2, AM3(A), AM4

and AM5. The proposal was verified by IEC and submitted to EPD, the proposal has approved

by EPD on 28 May 2019.

Sampling Procedure and Monitoring Equipment

4.1.8.     Monitoring Procedures

(a)           Check the calibration period of portable direct reading dust meter prior to monitoring (The direct reading dust meter was calibrated at 2-years interval and checked with High Volume Sampler (HVS) yearly.)

(b)           Record the site condition near / around the monitoring stations.

(c)           Install the portable direct reading dust meter to the monitoring location.

(d)           Slide the power switch to turn the power on.

(e)           Check of portable direct reading dust meter to ensure the equipment operation in normal condition.

(f)            Select the period of measurement to 60mins.

(g)           Check and set the correct time.

(h)           Select the appropriate unit display for the equipment.

(i)            Slide the power switch to turn the power off when the monitoring period ended (3 times 1 hour TSP monitoring per day).

(j)            Uninstall the portable direct reading dust meter

(k)           Collected the sampled data for analysis.

(l)            Remark: Procedures (c) to (h) may be different subject to the brands and models of portable direct reading dust meter

4.1.9.     Maintenance and Calibration

(a)           The direct reading dust meter was calibrated at 2-years interval and checked with High Volume Sampler (HVS) yearly to determine the accuracy and validity of the results measured.

(b)           Checking of direct reading dust meter will be carried out in order to determine the conversion factor between the direct reading dust meter and the standard equipment, HVS. The comparison check is to be considered valid based on correlation coefficient checked by HOKLAS laboratory.

4.1.10.   The 1-hour TSP air quality monitoring was performed by using portable direct reading dust meters at each designated monitoring station. The brand and model of the equipment are given in Table 4.2.

Table 4.2 Air Quality Monitoring Equipment

Equipment

Brand and model

Portable direct reading dust meter

Met One BT- 645

Met One AEROCET 831

 

4.1.11.   The calibration certificates of the air quality monitoring equipment are attached in Appendix 4.2. The calibration dates in the calibration certificates for portable direct reading dust meter models Met One BT-645 and Met One Aerocet 831 are presented in “month/day/year” format.

Wind Data

4.1.12.   The representative wind data from Sha Tin HKO Automatic Weather Station was obtained covering the 1-hr TSP monitoring periods. The wind data were extracted and shown in Appendix 4.3.

EVENT and action plan

4.1.13.   The Action and Limit levels for construction air quality are defined in Table 4.3 and Appendix 4.1. Should non-compliance of the air quality criteria occur, action in accordance with the Event and Action Plan in Appendix 6.1 shall be carried out.

 

Table 4.3 Action and Limit Level for Air Quality Monitoring

 

Monitoring Locations

1-hour TSP Level in μg/m3

Action Level

Limit Level

AM1

294

500

AM2

325

500

AM3(A)

360

500

AM4

297

500

AM5

349

500

 

4.2          Noise Monitoring

Noise Monitoring Stations

4.2.1.     Noise monitoring stations CM4 and CM5 were setup and commencement of monitoring on 13 April 2019 and 18 April 2019 respectively. Noise monitoring for stations CM1 and CM3 were commenced on 2 May 2019 in the reporting period. CM2(A) is under liaison for approval, no monitoring for CM2(A) was conducted in the reporting period.

4.2.2.     Based on the Project baseline report, the noise monitoring station CM2, Ma On Shan Tsung Tsin Secondary School was relocated to CM2(A), Kowloon City Baptist Church Hay Nien Primary School.

4.2.3.     The noise monitoring stations for the Project are listed and shown in Table 4.4 and Figure 4.2.

Table 4.4 Noise Monitoring Station

Monitoring Station ID

         Monitoring Location

Measurement Type

Level

(in terms of no. of floor)

CM1

Wellborn Kindergarten

Free field

G/F

CM2(A)

Kowloon City Baptist Church Hay Nien Primary School

Free field (tentative)

G/F (tentative)

CM3

S.K.H. Ma On Shan Holy Spirit Primary School

Façade

Roof

CM4

Ah Kung Kok Fishermen Village

Free field

G/F

CM5

The Neighbourhood Advice-Action Council Harmony Manor

Façade

Roof

 

Noise Monitoring Parameters, Frequency and Duration

4.2.4.     Noise monitoring shall be carried out at all the designated monitoring stations. The monitoring frequency shall depend on the scale of the construction activities. The following is an initial guide on the regular monitoring frequency for each station on a weekly basis when noise generating activities are underway:

·          One set of measurements between 0700-1900 hours on normal weekdays;

·          One set of measurements between 1900-2300 hours;

·          One set of measurements between 2300-0700 hours of next day; and

·          One set of measurements between 0700-2300 hours on holidays (three consecutive Leq/5min readings).

4.2.5.     If construction works are extended to include works during the hours of 1900-0700, additional weekly impact monitoring shall be carried out during evening and night-time works for the latter 3 sets of measurements specified in Section 4.1.2 above, one set of measurements shall at least include 3 consecutive Leq (5min) results.

4.2.6.     Supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.

4.2.7.     If a school exists near the construction activity, noise monitoring shall be carried out at the monitoring stations for the schools during the examination periods. The ET leader shall liaise with the school’s personnel and the examination authority to ascertain the exact dates and times of all examination periods during the course of the contract.

Monitoring Equipment

4.2.8.     Noise monitoring was performed using sound level meter at the designated monitoring locations. The sound level meters shall comply with the International Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1) specifications. Acoustic calibrator shall be deployed to check the sound level meters at a known sound pressure level. Brand and model of the equipment is given in Table 4.5.

 

Table 4.5 Noise Monitoring Equipment

Equipment

Brand and Model

Integrated Sound Level Meter

NTi XL2

B&K2236

HONGLIM HLES-01

Acoustic Calibrator

Larson Davis CAL200

 

4.2.9.     The calibration certificates of the noise monitoring equipment are attached in Appendix 4.2.

 

Sampling Procedure and Monitoring Equipment

4.2.10.   Monitoring Procedure

(a)           The monitoring station shall normally be at a point 1m from the exterior of the sensitive receiver’s building façade and be at a position 1.2m above the ground.

(b)           Façade measurements were made at the monitoring locations. For free-field     measurement, a correction factor of +3 dB (A) would be applied.

(c)           The battery condition was checked to ensure the correct functioning of the meter.

(d)           Parameters such as frequency weighting, the time weighting and the measurement time were set as follows:

(e)           Frequency weighting: A, Time weighting: Fast, Measurement time set: continuous 5 mins

(f)            Prior and after to the noise measurement, the meter was checked using the acoustic calibrator for 94dB (A) at 1000 Hz. If the difference in the calibration level before and after measurement was more than ±1 dB (A), the measurement would be considered invalid and repeat of noise measurement would be required after re-calibration or repair of the equipment.

(g)           Noise measurements shall not be made in fog, rain, wind with a steady speed exceeding 5m/s or wind with gusts exceeding 10m/s. The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in m/s.

4.2.11.   Maintenance and Calibration

(a)           The microphone head of the sound level meter was cleaned with soft cloth at regular intervals.

(b)           The sound level meter and calibrator were calibrated at yearly intervals.

 

EVENT and action plan

4.2.12.   Noise Standards for Daytime Construction Activities are specified under EIAO-TM. The Action and Limit levels for construction noise are defined in Table 4.6 and Appendix 4.1. Should non-compliance of the criteria occurs, action in accordance with the Event and Action Plan in Appendix 6.1 shall be carried out.

 

Table 4.6 Action and Limit Level for Noise Monitoring

Monitoring Station

Action Level

Limit Level (dB(A))

0700-1900 hrs on normal weekdays

0700-2300 hrs on holidays (including Sundays); and 1900-2300 hrs on all days 2

2300-0700 hrs of all days 2

CM1

When one documented complaint is received

65 / 70 1

60 / 65 / 70 3

45 / 50 / 55 3

CM2(A)

65 / 70 1

CM3

65 / 70 1

CM4

75

CM5

75

Remark 1: Limit level of CM1, CM2(A) and CM3 reduce to 65 dB (A) during examination periods if any.

Remark 2: Construction noise during restricted hours is under the control of Noise Control Ordinance Limit Level to be selected based on Area Sensitivity Rating.

Remark 3: Limit Level for restricted hour monitoring shall act as reference level only. Investigation would be conducted on CNP compliance if exceedance recorded during restricted hour noise monitoring period.

 

 

 

 

 

5.      Monitoring Results

5.0.1   The environmental monitoring will be implemented based on the division of works areas of each designed projects. Overall layout showing work areas and monitoring stations is shown in Figure 2.1 and Figure 4.14.2 respectively.

5.0.2   The environment monitoring schedules for reporting month and coming month are presented in Appendix 5.1.

5.1          Air Monitoring Results

5.1.1      1-hour TSP monitoring was conducted at AM1, AM2, AM4 and AM5 in the reporting month. No 1-hour TSP monitoring was scheduled at AM3(A) due to approval of monitoring station is still under liaison.

5.1.2      No action or limit level exceedance was determined in the reporting period at stations of AM1, AM2, AM4 and AM5

5.1.3      Air quality monitoring results measured in this reporting period for AM1, AM2, AM4 and AM5 are reviewed and summarized.  Details of air monitoring results and graphical presentation can be referred in Appendix 5.2.

5.2          Noise Monitoring Results

5.2.1   Noise monitoring was conducted at CM1, CM3, CM4 and CM5 in the reporting month. No noise monitoring was scheduled at CM2(A) due to approval of monitoring station is still under liaison.

5.2.2   No action or limit level exceedance was determined in the reporting period at stations of CM1, CM3, CM4 and CM5.

5.2.3   Noise monitoring results measured in this reporting period for CM1, CM3, CM4 and CM5 are reviewed and summarized. Details of noise monitoring results and graphical presentation can be referred in  Appendix 5.3.

5.3          Waste Management

5.3.1      The quantities of waste for disposal in the Reporting Period are summarized in Table 5.1 and Table 5.2. The Monthly Summary Waste Flow Table is shown in Appendix 5.4. Whenever possible, materials were reused on-site as far as practicable.

Table 5.1 Details of Waste Disposal for Contract no. DC/2018/05

Waste Type

Quantity this month

Cumulative Quantity-to-Date

Disposal / Dumping Grounds

Inert C&D materials disposed, m3

0

0

 

Inert C&D materials recycled, m3

0.055

0.055

Fill Bank at Tuen Mun Area 38

Non-inert C&D materials disposed, tonne

89.55

135.93

NENT

Non-inert C&D materials recycled, kg

0

0

 

Chemical waste disposed, L

0

0

 

Asbestos waste disposed, Kg

0

0

 

 

6.         Compliance Audit

6.0.1.     The Event Action Plan for construction noise, air quality are presented in Appendix 6.1.

6.0.2.     The summary of exceedance is presented in Appendix 6.2.

6.1          Air Monitoring

6.1.1     No action or limit level exceedance was determined in the reporting period at stations of AM1, AM2, AM4 and AM5. No 1hr TSP monitoring was scheduled at stations of AM3(A) due to approval of monitoring station is still under liaison.

6.2          Noise Monitoring

6.2.1      No action or limit level exceedance was determined in the reporting period at stations of CM1, CM3, CM4 and CM5, No noise monitoring was scheduled at stations of CM2(A) due to approval of monitoring station is still under liaison.

6.3          Review of the Reasons for and the Implications of Non-compliance

6.3.1      No environmental non-compliance was recorded in the reporting month.

6.4          Summary of action taken in the event of and follow-up on non-compliance

6.4.1      There was no particular action taken since no non-compliance was recorded in the reporting period.

7.         Environmental Site Audit

7.0.1.     Within this reporting month, weekly environmental site audits were conducted on 3, 10, 17 and 24 July 2019. IEC attended the joint site inspection on 24 July 2019.

Table 7.1     Summary of Environmental Inspections for Contract no. SPW 25/2018

Item

Date

Reminders/Observations

Action taken by Contractor

Outcome

20190710_01Env

10-7-2019

Muddy water observed discharge into public U-channel, contractor is requested to provide mitigation measures to prevent site runoff discharge to public

sand bags have been laid to intercept the works area to prevent surface runoff

Completed by contractor on 11 July 2019

20190724_01Env

24-7-2019

NRMN label of excavator (BH009) at Portion 6 was found fade in colour, contractor is reminded to replace with new one

NRMN label renewed

Completed by contractor on 29 July 2019

 

7.0.2.     Within this reporting month, bi-weekly landscape site audits were conducted on 3 and 17 July 2019.

Table 7.2     Summary of Landscape Inspections for Contract no. SPW 25/2018

Item

Date

Reminders/Observations

Action taken by Contractor

Outcome

Nil

 

 

 

 

 

7.0.3.     Within this reporting month, monthly ecology site audits were conducted on 23 July 2019.

Table 7.3     Summary of Ecology Inspections for Contract no. SPW 25/2018

Item

Date

Reminders/Observations

Action taken by Contractor

Outcome

20190723_01Eco

23-7-2019

Contractor is reminded to avoid damage on any plant species of conservation importance

On-going

On-going

 

 

8.        Complaints, Notification of Summons and Prosecution

8.0.1.     A public complaint regarding construction dust received by DSD on 29 July 2019 was subsequently referred to ET on 6 August 2019. The complaint under investigation by ET. Detail complaint log will be presented in coming monthly EM&A report.

8.0.2.     The details of cumulative complaint log and updated summary of complaints are presented in Appendix 8.1.

8.0.3.     Cumulative statistic on complaints and successful prosecutions are summarized in Table 8.1 and Table 8.2 respectively.

Table 8.1 Cumulative Statistics on Complaints

Reporting Period

No. of Complaints

July 2019

1

Total

1

 

Table 8.2 Cumulative Statistics on Successful Prosecutions

Environmental Parameters

Cumulative No. Brought Forward

No. of Successful Prosecutions this month (Offence Date)

Cumulative No. Project-to-Date

Air

-

0

0

Noise

-

0

0

Waste

-

0

0

Total

-

0

0

 

9.         Conclusion

9.0.1.     The EM&A programme was carried out in accordance with the EM&A Manual requirements, minor alterations to the programme proposed were made in response to changing circumstances.

9.0.2.     The scheduled construction activities and the recommended mitigation measures for the coming month are listed in Table 9.1. The construction programmes of the Project are provided in Appendix 9.1.

Table 9.1 Construction Activities and Recommended Mitigation Measures in Coming Reporting Month

Key Construction Works

Recommended Mitigation Measures

·         Site clearance, construction of site office, hoarding erection, construction of cycle track, ground investigation and excavation for temporary haul road

 

·         Root pruning and transplantation

 

 

·        Hand dig trial pit excavation

·        Hoarding and demolition of site office

·         Dust control during dust generating works;

·         Implementation of proper noise pollution control; and

·         Provision of protection to ensure no runoff out of site area or direct discharge into public drainage system.

·         Direct impact to plant species of conservation importance recorded in the vicinity of the construction sites shall be avoided

·         Excavation materials shall be well covered

·         Mitigation measures to dust and noise control should be provided to erection of hoarding and demolition of site office