5 Waste Management Implications

5.1 Introduction

5.1.1 Waste management will be the Contractor’s responsibility to ensure that all wastes produced during the dredging operation are handled, stored and disposed of in accordance with good waste management practices and EPD’s regulations and requirements. The Contractor will be required to ensure that loss of dredged material does not take place during transportation of the material in barges to the designated marine disposal ground.

5.1.2 Other waste materials generated during the dredging operation, such as construction and demolition (C&D) material and chemical wastes, are recommended to be audited at regular intervals (at least quarterly) to ensure that proper storage, transportation and disposal practices are being implemented. This audit will ensure that solid and liquid wastes are not disposed of into the surrounding marine waters. The Contractor will also be responsible for the implementation of mitigation measures to minimise waste or redress problems arising from the waste materials.

5.2 Waste Control and Mitigation Measures

5.2.1 Table 5.1 provides a summary of the various waste types likely to be generated during the dredging operation, together with the recommended handling and disposal methods. The implementation schedule of the recommended waste control and mitigation measures is presented in Appendix C.

^{Table 5.1 Summary of Waste Handling Procedures and Disposal Routes}

Waste Type	Generated from Works Item	Total Quantity Generated	Quantity to be disposed off-site / re-used	Handling	Disposal
Capital Dredging
C&D Material	Removal of existing seawall by dredging	322,300 m^3 rock fill / rock armour / general fill	322,300 m^3of C&D material to be disposed off-site C&D material should be reused as far as practicable	Dust and water quality mitigation measures (Appendix C)	Inert C&D material to be disposed off-site to the designated public fill reception facility C&D material should be reused as far as practicable
Dredged Sediment	Dredging of seabed in the proposed manoeuvring basin (Category H and Category M sediment)	430,000 m^3 Stage 1: 210,000 m^3 & Stage 2: 220,000m^3	430,000 m^3 (Stage 1: 210,000m^3 & Stage 2: 220,000m^3)	Dust, odour, noise , water quality mitigation measures (Appendix C)	Type 1 – Open Sea Disposal (Dedicated Sites) or Type 2 - Confined Marine Disposal at disposal site(s) to be allocated by MFC
	Dredging of seabed in the proposed manoeuvring basin (Category L sediment)	950,000 m^3 Stage 1: 490,000m^3 (including 20,000m^3 from removal of the Kai Tak Runway submarine outfall) & Stage 2: 460,000m^3	950,000 m^3 (Stage 1: 490,000m^3 & Stage 2: 460,000m^3)		Type 1 - Open Sea Disposal - gazetted marine disposal ground allocated by MFC
	Removal of existing seawall by dredging	None	None	-	-
Chemical Wastes	Cleansing fluids, solvent, lubrication oil and fuel from construction plant and equipment	Few cubic metres per month (preliminary estimate)	Few cubic metres per month (preliminary estimate)	Recycle by licensed companies Stored on-site within suitably designed containers (Appendix C)	Chemical Waste Treatment Facility or other licensed facility
General Refuse	Waste paper, discarded containers, etc. generated from workforce	Approx. 13 kg per day (preliminary estimate based on workforce of 20)	Approx. 13 kg per day	Provide on-site refuse collection points (Appendix C)	Refuse station for compaction and containerisation and then to landfill
Maintenance Dredging
Dredged Sediment	Sediment quality to be determined by sediment sampling and testing under the requirements of the ETWB TCW No. 34/2002	Approx. 350,000 m^3 every 5 to 10 years	Approx. 350,000 m^3 every 5 to 10 years	Dust, odour, noise , water quality mitigation measures (Appendix C)	MFC would formally allocate marine disposal space in accordance with ETWB TCW No. 34/2002.
Chemical Wastes	Cleansing fluids, solvent, lubrication oil and fuel from construction plant and equipment	Few cubic metres per month (preliminary estimate)	Few cubic metres per month (preliminary estimate)	Recycle by licensed companies Stored on-site within suitably designed containers (Appendix C)	Chemical Waste Treatment Facility or other licensed facility
General Refuse	Waste paper, discarded containers, etc. generated from workforce	Approx. 13 kg per day (preliminary estimate based on workforce of 20)	Approx. 13 kg per day	Provide on-site refuse collection points (Appendix C)	Refuse station for compaction and containerisation and then to landfill