1.1.1 The existing Yuen Long Sewage Treatment Works (YLSTW) is a secondary sewage treatment works, located at Yuen Long Industrial Estate serves Yuen Long Town, Yuen Long Industrial Estate and Kam Tin areas with a design capacity of 70,000 m³ per day. Based on the latest planning data, the volume of sewage generation from the YLSTW catchment is estimated to increase to 150,000 m³ per day after 20 years. In addition, since YLSTW has been operating for over 30 years and most of its facilities are of out-dated design and reaching the end of their design life, the environmental facilities of the plant will also be upgraded and hence improving the adjacent environment through upgrading the YLSTW to Yuen Long Effluent Polishing Plant (YLEPP). The Location of Proposed Yuen Long Effluent Polishing Plant is given in Figure 1.
1.1.2
YLSTW will be reconstructed in
two stages to increase its capacity to 150,000 m³ per day. The proposed works,
as Stage 1 of the project, will firstly increase the treatment capacity to
100,000 m³ per day. In the course of Stage 1 construction, about half of the
existing facilities of YLSTW would be demolished, while the other half would be
kept in operation to maintain the sewage treatment service for Yuen Long area.
This 72-month works contract commenced on 9 November 2020. Demolition of
existing YLSTW for construction of new treatment facilities are in progress.
1.1.3
The Project is a designated
project under Schedule 2 of the Environmental Impact Assessment Ordinance
(EIAO) (Cap. 499) for which Environmental Impact Assessment (EIA) report and
Environmental Monitoring and Audit (EM&A) Manual was approved by EPD
(Register No.: AEIAR-220/2019) on 25 April 2019. The Environmental Permit (EP)
(EP No. EP-565/2019) was issued by EPD on 26 April 2019.
1.1.4
Fugro Technical Services
Limited was appointed as the Environmental Team (ET) by Drainage Services
Department (DSD) to undertake the Environmental Team services for the Project
and implement the EM&A works under the Contract No. DC/2019/10 Yuen Long
Effluent Polishing Plant -Main Works for Stage 1 (hereinafter referred as “the
Contract”) for the period from July 2020 to 6 July 2023.
1.1.5
Aurecon Hong Kong Limited
(Aurecon) has been appointed as the Environmental Team (ET) by Drainage
Services Department (DSD) to undertake the Environmental Team services for the
Project and implement the EM&A works under the Contract from July 2023. Air
quality, noise, water quality and ecological monitoring, site inspections and
auditing (as scheduled) under EM&A programme with effect from 7 July 2023
was conducted by Aurecon. Aurecon is
undertaking the preparation (including reporting of monitoring results),
certification by ET Leader and submission of this report to EPD.
1.1.6
All ET roles and
responsibilities under the EP for this Project were undertaken by Fugro up to 6
July 2023 and by Aurecon with effect from 7 July 2023. Air quality, noise, water quality and ecological monitoring, site
inspections and auditing (as scheduled) under EM&A programme
up to 6 July 2023 was conducted by Fugro, and the corresponding monitoring
results were shared with Aurecon for the purposes of reporting in this report.
1.1.7 This is the 13th Quarterly EM&A Summary Report to document the findings of site inspection activities and EM&A programme for this project from 1 April 2024 to 30 June 2024 (reporting period) and is submitted to fulfil Condition 3.5 of the EP and Section 12.4.5 of the EM&A Manual. According to Condition 4 of the EP, electronic reporting is provided on the internet website to facilitate public inspection of the report.
1.2.1
The Project Organization
structure is shown in Appendix B. The key personnel contact names and numbers are summarized
in Table 1.
1.3.1
The construction programme of this project is shown in Appendix A.
1.4.1 The main construction works carried out in the reporting period were summarized in Table 2:
1.4.2 The environmental mitigation measures corresponding to the main construction works implemented in the reporting period can be referred to Appendix G.