This section presents the EM&A recommendations for auditing the water quality mitigation measures during the construction and operational phases of the Designated and Potentially Designated elements of the Project.
7.1.1 Construction Phase
As stated in the EIA(DE) report, no water quality monitoring is required for the construction phase. However, as part of the regular audit procedures (see Section 14), it is recommended that ET Leader confirms that the Contractor has implemented the mitigation measures, as described in Section 5.7.1 of the EIA(DE) Report.
In addition to implementing the specified mitigation measures, the Contractor will also be required to obtain a WPCO discharge licence should any wastewater discharges be released from the site. This may require the Contractor to undertake monitoring of the quality/quantity of the discharges to show compliance with the conditions of the licence; however, at this stage, this does not form part of the EM&A programme.
7.1.2 Operation Phase
No monitoring of water quality would be required during the operational phase of the Project.
Routine monitoring of the quality of the treated sewage effluent from the Yuen Long STW is currently being carried out by the Drainage Services Department (DSD) in order to satisfy the conditions of the WPCO discharge licence. Such monitoring would continue following the upgrade/expansion of the STW. It should be noted that prior to the operation of the Stage 1 works, a new discharge licence will be required. Such monitoring would not form part of the EM&A programme for the Stage 1 works