Water Quality Impact. I. The Consultants shall make reference to the criteria and guidelines for evaluating and assessing water quality impact as stated in Annexes 6 and 14 of the TM.
Water Quality Impact. In accordance with the recommendations of the EIA, mitigation measures have been proposed during the construction phase of the Project. Details of the mitigation measures are presented in Appendix E - Implementation Schedule. In accordance with the recommendations of the EIA, water quality EM&A is required during dredging and sandfilling activities. In addition, baseline water quality monitoring will be required prior to the commencement of construction activities. The following Section provides details of the water quality monitoring to be undertaken by the ET to verify the distance of sediment plume dispersion and to identify whether the potential exists for any indirect impacts to occur to ecological sensitive receivers. The water quality monitoring programme will be carried out to ensure that any deteriorating water quality is readily detected and timely action taken to rectify the situation. The status and locations of water quality sensitive receivers and the marine works location may change after issuing this Manual. If required, the ET in consultation with the Contractor(s) will propose updated monitoring locations and seek approval from the ER, the IEC and EPD.
Water Quality Impact. Major impact to Water Sensitive Receivers will be site runoff, which can be minimised with proper implementation of mitigation measures. The protected environmental sensitive areas include water gathering ground from eastern end of the Project, local streams near Kadoorie Experimental Farm, Xxxx Xxx Monastery, Xxxx Xxxx Xxxx, Xxxxxx Xxxxx and Xxx Tin Bypass; nullah near Wang Toi Xxxx Xxxx Mo Xxx, Xxxx Kong Barracks and the channelized Kam Tin River. Ecological Impact Disturbance from construction activities to nearby habitats and site runoff during construction phase can be minimised for the sensitive areas, such as nearby waterbodies, natural habitats and wildlife, with proper implementation of mitigation measures. Highways Department –Works Division CE 76/2017 (HY) Upgrading of Remaining Sections of Kam Tin Road and Xxx Xxx Road Land Contamination Site re-appraisal is required for the identified potentially contaminated sites as well as other areas within the Project Boundary to address any change in land use that may give rise to potential land contamination issues as soon as the sites become accessible. A supplementary CAP should be submitted and endorsed by EPD before site investigation and a CAR should be prepared for EPD's agreement upon completion of the site investigation. If contamination was identified, RAP shall be also prepared and submitted to EPD for agreement prior to the commencement of the remediation works. Upon completion of the remediation, a Remediation Report (RR) shall be submitted to EPD for agreement.
Water Quality Impact. The Contractor shall comply with the Water Pollution Control Ordinance (WPCO) and its subsidiary regulations. In addition, the Contractor shall comply with the “Conditions for Working within Water Gathering Grounds” issued by WSD for the proposed landslip preventive works at the Designated Project (refer to Appendix E). The Contractor should ensure that all runoff arising from the work sites are properly treated, e.g. by the use of sedimentation tank or silt trap, and that the discharge standards as stipulated in WPCO are met. Any trade effluent or foul or contaminated or cooling or hot water should not be discharged into any public sewer, stormwater drain, channel, stream course or the sea. If toilet facilities are erected, foul water effluent should be directed to a foul sewer or to a sewage treatment and disposal facility. The Contractor should be responsible for the design, construction, operation and maintenance of all the mitigation measures and practices specified in the Professional Persons Environmental Consultative Committee Practice Note (ProPECC PN) 1/94 “Construction Site Drainage” issued by the Director of Environmental Protection.
Water Quality Impact. The Consultants shall follow the criteria and guidelines for evaluating and assessing water pollution as stated in Annexes 6 and 14 of the TM respectively. The Consultants shall include in the water quality impact assessment of the following tasks: collection and review of background information on the existing and planned water systems and their respective catchments and sensitive receivers which might be affected by the Project; characterisation of water quality on the surrounding water systems and respective catchments and sensitive receivers which might be potentially affected by the Project both during construction and operation stages; identification and analysis of the existing and planned future activities and beneficial uses related to the water systems and identification of the water sensitive receivers by referring to those developments and uses indicated on the relevant Outline Zoning Plans, Outline Development Plans and Layout Plans, and consult the Planning Department on any other developments being considered in the planning process; identification of any alteration of sewage bypass, water courses, drainage systems, leachate collection systems, and change of catchment types or areas; review of the specific construction methods and operation of the Project; identification, analysis and quantification of all existing and likely future water pollution sources, including point discharges and non-point sources to surface water runoff. Establishment and provision of an emission inventory on the quantities and characteristics of all these pollution sources; establishment of the water quality objectives, criteria and standards for all sensitive receivers; assessment and evaluation of any potential water quality impacts on the identified water systems and sensitive receivers; and identification and recommendation of mitigation measures to minimise the adverse water quality impact.
Water Quality Impact. 11.4.1 Water quality impacts from the land-based decontamination works, associated with leachate and contaminated runoff, can be controlled to acceptable levels by implementing the recommended mitigation measures. All the effluents and runoff generated from the works areas shall be treated and their quality be monitored before discharged. No unacceptable water quality impacts would be expected from the land-based decommissioning activities.
Water Quality Impact. Regular review and maintenance of silt curtain systems, drainage systems and desilting facilities in order to make sure they are functioning effectively. Construction of seawall should be completed as early as possible. Regular inspect and review the loading process from barges to avoid splashing of material. Silt, debris and leaves accumulated at public drains, wheel washing bays and perimeter u-channels and desilting facilities should be cleaned up regularly. Silty effluent should be treated/ desilted before discharged. Untreated effluent should be prevented from entering public drain channel. Proper drainage channels/bunds should be provided at the site boundaries to collect/intercept the surface run-off from works areas. Exposed slopes and stockpiles should be covered up properly during rainstorm.
Water Quality Impact. 4.4.1.1 Water quality monitoring and audit is considered necessary to ensure that the recommended mitigation measures are implemented properly throughout the construction phase and during maintenance dredging in operation phase. Weekly site audit is recommended to be conducted during construction phase in order to ensure the proposed mitigation measures are implemented in an appropriate manner and are effective. Marine water quality monitoring is recommended during both capital and maintenance dredging works of the Project. Monitoring parameters will include dissolved oxygen (DO), turbidity and suspended solids (SS). Baseline monitoring for marine water quality will be carried out 3 days per week for 4 weeks prior to the commencement of marine works of the Project. Impact monitoring will be undertaken 3 days per week during the capital and maintenance dredging works of the Project.
Water Quality Impact. 4.3.1 Wastewater generated from the decommissioning and demolition works will be limited to general cleaning works, water used in dust suppression and workers. The Specialist Contractor should take precautionary measures to minimise the quantity of wastewater generated.
