Table 15.6

IMPLEMENTATION SCHEDULE (See Notes at End of Table for Codes)

EIA Ref.	Environment Protection Measures	Location/Timing	Implementation Agent	Implementation Stages*				Relevant Legislation and Guidelines
				Des	C	O
Section 3	Hydrology
	Prior to be start of construction, a suite of piezometers should be installed at locations specified in the EIA. Baseline measurements of groundwater shall be made in the year preceeding tunnel construction. Wet/Dry season, Spring/Neap tides.	Specified locations/C	DDE/KCRC	3	3		BOO Std groundwater Issues
	Construction
	Monitoring of ground water levels and surface settlement at defined locations and frequencies as specified in the EIA report.	Specified locations/C	CC		3		BOO Std groundwater Issues
	The contractor shall make appropriate remediation for recovery of settlement of bunds along the mid-Long Valley watercourse, in consultation with farmers using the irrigation flows.	Specified locations/C	CC		3
	Negotiation with WSD and AFCD to establish management protocols for any necessary operation of sluices and inflatable dams within the main Channels and the Long Valley watercourses to facilitate a timely response to unacceptable changes in LV groundwater levels.	Long Valley/C	KCRC/CC		3
	Incorporation of compensatory cross-over drainage shall be installed in the lean-mix plug to promote drainage subsurface flow in floor of River Sutlej channel.	River Sutlej/Des & C	DDE/CC	3	3
	Operation
	Measurements shall be continued in Long Valley piezometers after tunnel construction is complete, at a frequency specified in the EIA report. The pre-existing hydrological envelope of wet/dry season, spring and neap tide shall be re-confirmed.	Long Valley/O	KCRC/DDE		3	3
Section 4	Ecology Construction mitigation measures Wetland habitats should be designed to achieve the specified compensation objectives for habitats and species. The design of the wetlands should conform with the description in the EIA report. An overall area of 27.1 ha fishponds will be enhanced for wildlife as compensation for ecological impacts due to Spur Line. A further 9.9 ha will be used to create marsh and reedbed. A further 1 ha will be planted with bamboo to reduce visual impacts from the station building. An area of fishponds west of the Lok Ma Chau station, as specified in the EIA report, will be established before construction starts through water level management and fish stocking. During construction additional ponds within the ecological compensation area will be used as a water resource and for fish stocking. Reprofiling of pond levels will create shallow feeding habitats as required for target species. Modification of ponds and reprofiling of bunds should be carried out in accordance with the EIA requirements.	Specified locations Specified locations/Des & C Lok Ma Chau/ Des, C & O	DDE/CC DDE/CC/ KCRC DDE/CC/ KCRC	3 3 3	3 3 3	3	--
	Design must ensure that suitable hydrological conditions for target wetland habitats are provided in the long-term and that appropriate plant species and establishment methods are used to enhance / create target vegetation communities.	Lok Ma Chau/Des, C & O	DDE/CC/ KCRC	3	3		--
Section 4	The Habitat Creation and Management Plan (HCMP) should be prepared before the operation of the fishponds begins. Regular review of the HCMP is required during operation of the wetland enhancement area. Areas of reed bed and marshland habitat will be created alongside the LMC station buildings for both ecological and water cleanup proposes. They will be shallow sloping basins to produced zoned wetland habitat. Construction works will be minimal and consist of reprofiling adjacent fishpond bunds. The reedbed should be established before construction of the sewage treatment plant is complete.	Lok Ma Chau/Des, C & O Lok Ma Chau/ Des, C and O Lok Ma Chau/ Construction stage	KCRC DDE/CC/ KCRC	3 3	3 3 3	3 3
	The design of Lok Ma Chau Station should minimise areas of reflective materials (including glass) on outer surfaces of the station and footbridge.	LMC station & footbridge Des&C	DDE/CC	3	3
	Contractor access should be limited to the area required for working along the whole alignment and particularly at Lok Ma Chau and San Tin where work is required in fishponds. Impacted ponds that will not be used for mitigation or structures shall be reinstated after construction is completed.
	The designated noise reduction system shall be appropriately incorporated throughout the alignment	Whole alignment/Des & C	DDE/CC	3	3	3
Section 4	Operation mitigation measures Maintenance of the ecological compensation areas should be carried out according to the Habitat Creation and Management Plans for the Lok Ma Chau Station mitigation area.	Lok Ma Chau/O	KCRC			3	--
	Monitoring The detailed design of the wetland mitigation area should be checked and the establishment of the wetland area monitored by qualified ecologists and landscaping professionals.	Lok Ma Chau compensation area/Des, C & O	KCRC	3	3	3	--
Section 5	Fisheries Reinstatement of temporarily impacted fishponds below the viaduct, after construction is completed.	Lok Ma Chau	CC	3	3		--
Section 6	Air Quality Dust Mitigation Measures The following dust control measures as part of good construction site practice should be incorporated in the Contract Specification and implemented to minimize dust nuisance arising from the works to within acceptable levels:
	(i) The Contractor shall undertake at all times to prevent dust nuisance as a result of his activities. Effective dust suppression measures, as necessary, should be installed to minimize air quality impacts, at the boundary of the site and at any sensitive receivers.	Whole construction site/whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	(ii) The Contractor shall frequently clean and water the site to minimize fugitive dust emissions.	Whole construction site/whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
Section 6	(iii) Effective water sprays shall be used during the delivery and handling of all raw sand, aggregate and other similar materials, when dust is likely to be created, to dampen all stored materials during dry and windy weather.	Whole construction site/whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	(iv) Watering of exposed surfaces shall be conducted as often as possible depending on the circumstances.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	(v) Areas within the site where there is a regular movement of vehicles shall have an approved hard surface, be kept clear of loose surface materials and / or regularly watered.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	(vi) Where dusty materials are being discharged to vehicle from a conveying system at fixed transfer point, a three-sided roofed enclosure with a flexible curtain across the entry shall be provided. Exhaust fans shall be provided for this enclosure and vented to a suitable fabric filter system.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	(vii) The Contractor shall confine haulage and delivery vehicles to designated roadways inside the site. If in the opinion of the Engineer, any motorised vehicle is causing dust nuisance, the Engineer may require that the vehicle be restricted to a maximum speed of 15 km per hour while within the site area.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
Section 6	(viii) Wheel cleaning facilities shall be installed and used by all vehicles leaving the site. No earth, mud, debris, dust and the like shall be deposited on public roads. Water in the wheel cleaning facility shall be changed at frequent intervals and sediments shall be removed regularly. The Contractor shall submit details of proposals for the wheel cleaning facilities to the Engineer prior to construction of the facility. Such wheel cleaning facilities shall be usable prior to any earthwork excavation activity on site. The Contractor shall provide a hard-surfaced road between any cleaning facility and the public road.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	(ix) Stockpiles of sand and aggregate greater than 20 m^3 shall be enclosed on three sides, with walls extending above the pile and 2 m beyond the front of the pile.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	(x) Chemical wetting agents shall only be used on completed cuts and fills to reduce wind erosion.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	(xi) All site vehicular exhausts should be directed vertically upwards or directed away from ground to minimize dust nuisance.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
Section 6	(xii) Ventilation system, equipped with proprietary filters, should be provided to ensure the safe working environment inside the tunnel. Particular attention should be paid to the location and direction of the ventilation exhausts. The exhausts should not be allowed to face any sensitive receivers directly. Consideration should also be given to the location of windows, doors and direction of prevailing winds in relation to the nearby sensitive receivers.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	In addition, based on the Air Pollution Control (Construction Dust) Regulation, any works involved regulatory work, such as stockpiling, loading and unloading of dusty materials, shall take precautions to suppress dust nuisance. Examples of dust suppression methods are:
	• The working area of any excavation or earthmoving operation shall spray with water or a dust suppression chemical immediately before, during and immediately after the operation so as to maintain the entire surface wet;	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	• Exposed earth shall be properly treated by compaction, turfing, hydroseeding, vegetation planting or sealing with latex, vinyl, bitumen or other suitable surface stabiliser within six months after the last construction activity on the construction site or part of the construction site where the exposed earth lies; and	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	• Any stockpile of dusty materials shall be either covered entirely by impervious sheeting or placed in an area sheltered on the top and three sides; and sprayed with water or a dust suppression chemical so as to maintain the entire surface wet.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
Section 6	• Regular watering of haul roads to maintain surface wet. In order to meet this requirement, watering should be carried out at least twice a day and a water refilling system should be installed so that the water refilling time should be less than ten minutes.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	• All stockpile of excavated material shall be either covered entirely by impervious sheeting or sprayed with water so as to maintain it in a damp condition.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	• Any conveyor system used for transfer of dusty materials should be fitted with wind boards on all sides, enclosures at conveyor transfer points and hopper discharge areas, three sided roofed enclosure with flexible curtain across the entry, conveyor belt cleaners and exhaust fans with suitable fabric cleaner.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	• Where a site boundary adjoins a road, street service lane or other area accessible to the public, hoarding of not less than 2.4 m above ground level shall be provided along the entire length of that portion of the site boundary except for any site entrances or exits.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	• Sites used for the storage of cement or dry pulverised fuel ash shall not be overfilled.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
	According to the Air Pollution Control (Specified Processes) Regulations, concrete plants with a site capacity greater than 50 tonnes will be considered as a specified process and require a licence to be operated. Under this regulation, an Air Pollution Control Plan for the batching plant will be prepared in an effort to control the fugitive dust. Thus, operation of plant must comply with the strict dust controls so as to reduce the potential dust impact on the nearby sensitive receivers.	Whole construction site / whole construction period	CC		3		Air Pollution Control Ordinance (APCO)
Section 6	EM & A Requirements The assessment of air quality impacts has concluded that it is unlikely that there will be any significant impacts along the Spur Line alignment during both construction and operation phases. Routine environmental monitoring of air quality during construction is considered unnecessary. However, the specified mitigation measures should be written into contract documents.	whole alignment/all times	CC		3		--
	Routine audit of the implementation status of specified mitigation measures during the construction and operation phases should be undertaken by the project proponent or his representative. Such audits should be well documented and include action procedures in the case of non-compliance.	whole alignment/all times	CC		3		--
Section 7	Noise Construction mitigation measures
	The Contractor shall comply with the Noise Control Ordinance (Cap 400) and with any regulations made under the Ordinance, including restrictions placed on noise from construction work and the requirements to seek Construction Noise Permits. Before commencing work which requires Construction Noise Permits, the Contractor should obtain such permits and display these appropriately.	whole alignment/all times	CC		3		NCO (Cap 400)
	The Contractor shall devise, arrange methods of working and carry out the works in such a manner as to minimise noise impacts on the surrounding environment, and shall provide experienced personnel with suitable training to ensure that these methods are implemented.	whole alignment/all times	CC		3		--
Section 7	In general, the Contractor is required to minimize or avoid potential construction noise impact by imposing a combination of the following mitigation measures:	whole alignment/all times	CC		3
	Noisy equipment and activities should be sited by the Contractor as far from close-proximity sensitive receivers as practical. Prolonged operation of noisy equipment close to dwellings should be avoided.	whole alignment/all times	CC		3
	The Contractor should minimise construction noise exposure to the schools (especially during examination periods) as much as possible. The Contractor should liaise with the school and the Examination Authority to ascertain the exact dates and times of all examination periods during the course of the contract and to avoid noisy activities during these periods.	whole alignment/all times	CC		3		-
	Noisy plant or processes should be replaced by quieter alternatives where possible. Silenced diesel and gasoline generators and power units, as well as silenced and super-silenced air compressors, can be readily obtained.	whole alignment/all times	CC		3		-
	Noisy activities should be scheduled to minimise exposure of nearby sensitive receivers to high levels of construction noise. For example, noisy activities can be scheduled for midday, or at times coinciding with periods of high background noise (such as during peak traffic hours).	whole alignment/all times	CC		3		-
	Idle equipment should be turned off or throttled down. Noisy equipment should be properly maintained and used no more often than is necessary.	whole alignment/all times	CC		3		-
Section 7	The power units of non-electric stationary plant and earth-moving plant should be quietened by vibration isolation and partial or full acoustic enclosures for individual noise-generating components.	whole alignment/all times	CC		3		-
	Construction activities should be planned so that parallel operation of several sets of equipment close to a given receiver is avoided, thus reducing the cumulative impacts between operations. The numbers of operating items of powered mechanical equipment should be minimised. Noise can be reduced by increasing the distance between the operating equipment and the NSRs or by reducing the number of items of equipment and/or construction activity in the area at any one time. Quiet and/or silenced models PME should be employed as far as practicable.	whole alignment/c Whole alignment/all times	CC CC		3 3		-
	For site specific construction noise measures, refer to Section 7.2.		CC		3		TMEIAO/NCO
	Operational Noise The contractor shall ensure that the measures proposed shall meet the required standard defined in the Noise Control Ordinance at all locations along the Alignment.	whole alignment/all times	CC		3
	Viaduct Structure The Sound Reduction Plenum System will be used on all elevated sections of the alignment on viaduct	All elevated sections of alignment on viaduct	DDE/CC	3	3		NCO and EIAOTM
Section 7	Ventilation Buildings Refer to Section 7.3 for design noise limits for ventilation buildings		DDE/CC	3	3		NCO
	Track Form Design Floating mini-slab track (FST) at a resonant frequency of 16 Hz and low stiffness shear type baseplates of 13 kN/mm shall be used in the track form design throughout the section of the railway within Kwu Tung North NDA. Low Vibration Track (LVT) will be used through the tunnel and viaduct sections of the alignment except for within Kwu Tung North NDA. Noise Barriers.	Kwu Tung North NDA/operational stage North of Sheung Shui Station	DDE/CC DDE/CC	3 3	3 3		NCO and EIAOTM NCO and EIAOTM
	Air-conditioning Limits The noise specification of air-conditioning units mounted on the roof of new skirted trains shall not exceed a noise level of 57 dB(A) at a distance of 15 m from the train.	All trains/whole operational stage	DDE/CC	3	3		NCO and EIAOTM
Section 7	Monitoring The assessment of noise impacts has concluded that if the recommended mitigation measures are incorporated into the design, it is unlikely that there will be any prolonged impacts at any of the sites during construction phase. Routine environmental monitoring of noise during construction will be carried out at RNSRs specified in Chapter 15 of the EIA report. Additional and hoc monitoring should be carried out if complaints arise. Specified mitigation measures should be written into contract documents.	RNSRs as listed in EIA report	CC		3		--
	Routine audit of the implementation status of specified mitigation measures during the construction and operation phases should be undertaken by the project proponent or his representative. Such audits should be well documented and include action procedures in the case of non-compliance.	whole alignment/all times	CC		3		--
Section 8	Water Construction mitigation measures With reference to Section 8 of the EIA report, the Contractor shall provide mitigation measures to meet environmental protection requirements as described below.			3	3
Section 8	(a) At the start of site establishment perimeter cut-off drains shall be constructed to direct off-site water around the site, and internal drainage works and erosion and sedimentation control facilities shall be implemented. Channels, earth bunds or sand bag barriers shall be provided on site to direct storm water to silt removal facilities. The design of efficient silt removal facilities should be based on the guidelines in Appendix A1 of ProPECC PN 1/94. All the surface runoff or extracted ground water contaminated by silt and suspended solids should be collected by the on-site drainage system and diverted through the silt traps prior to discharge.	Whole alignment / C	CC		3		ProPECC PN 1/94 WPCO
	(b) The overall slope of the site shall be kept to a minimum to reduce the erosive potential of surface water flows , and all trafficked areas and access roads shall be protected by coarse stone ballast.	Whole alignment / C	CC		3		WPCO
	(c) The Contractor shall ensure that works take place in the dry season as far as practicable or else additional temporary works such as cofferdam or temporary earth bund will be required to minimise runoff and pollution from the works entering the water column. Water collecting behind the cofferdam shall be either pumped onto the land-bank or collected, settled and pH adjusted to 6.0 to 8.5 before being allowed to enter the channels. Concrete works on the footbridge across Shenzhen River should implement appropriate drainage to prevent concrete washings entering the environment.	Whole alignment/C	CC		3		ProPECC PN 1/94
Section 8	(d) Works in River Sutlej and for diversion of Chau Tau Channel should be carried out in the dry season and provision made for diversion of the low flow channel to avoid impacts on water quality from the works.	River Sutlej and Chau Tau/C			3
	(e) Moist spoil from the tunnel boring operation shall be transported to the launching shaft on a conveyer belt, covered if necessary to reduce runoff during the wet season, and the spoil shall be settled on-site to reduce spoil moisture before disposal. The remaining water will be treated to removal solids and other pollutants to ensure compliance with WPCO before discharge. A licence shall be obtained from EPD (LCO) before the start of any works involving discharges.	Launching shaft/C	CC		3
	(f) Wheel washing facilities and sediment traps shall be provided at each site exit.	All site/C	CC		3
	(g) Open stockpiles of construction materials (e.g. aggregates, sand and fill material) on site shall be protected from erosion during rainstorms. Measures shall be taken to prevent the washing away of construction materials, soil, silt or debris into any drainage system. Hydroseeding should be used where practical.	Whole alignment/C	CC		3		ProPECC PN 1/94
Section 8	(h) All vehicles and plant shall be cleaned before leaving the construction site to ensure no earth, mud or debris is deposited by them on roads. A wheel washing bay shall be provided at every site exit. The wheel washing bay shall be designed and sited to accommodate the predicted through put of vehicles and shall have an associated sedimentation facility that is capable of removing the sand and silt from the wash-water. The settled out sand and silt shall be removed at least on a weekly basis to ensure the continued efficiency of the process. The section of access road leading to, and exiting from, the wheel-wash bay to the public road shall be paved with sufficient backfill toward the wheel-wash bay to prevent vehicle tracking soil and silty water to public roads and drains.	Whole alignment/all times	CC		3		WPCO
	(i) The transport of sediment to the environment shall be minimised by the installation of appropriate sediment traps within the drainage system. Sediment traps shall be designed with adequate capacity, and shall be regularly maintained.	whole alignment/all times	CC		3		ProPECC PN 1/94
	(j) Wastewater generated from the washing down of mixer trucks and drum mixers and similar equipment should be recycled. The discharge of wastewater should be kept to a minimum.	whole alignment/all times	CC		3		--
	(k) Wastewater generated from construction activities should be discharged into an excavated sedimentation pit prior to discharge wherever possible. The pit should be unlined to allow for infiltration of water into the ground if ground conditions allow. Settlement of concrete washings in a sedimentation pit should allow for setting of concrete before disposal.	whole alignment/all times	CC		3		--
Section 8	(l) In the case of an unlined pit for all types of wastewater being settled out, water infiltration into the ground requires a license from EPD under the WPCO regulations. Where a license cannot be obtained, or if water re-use is practised, the pit may need to be lined, which requires more frequent removal of the contents.	whole alignment/all times	CC		3		WPCO
	(m) Measures shall be taken to minimise the ingress of site drainage into excavations. If the excavation of trenches in wet periods is necessary, they shall be dug and backfilled in short sections wherever practicable. Water pumped out from trenches or foundation excavations should be discharged into storm drains via silt removal facilities.	whole alignment / all times	CC		3		WPCO
	(n) Oil interceptors shall be provided in Site compounds and regularly emptied to prevent release of oils and grease into the surface water drainage system after accidental spillages. The interceptor shall have a bypass to prevent flushing during periods of heavy rain. Oil and fuel bunkers shall be bunded to prevent discharge due to accidental spillages or breaching of tanks.	Whole alignment/all times	CC		3		ProPECC PN 1/94
Section 8	(o) Any waters entering storm drains must have a pH of between 6.0 and 8.5. Under normal circumstances, surplus wastewater may be discharged into foul sewers after treatment in silt removal and pH adjustment facilities (to within the pH range of 6 to 9). Disposal of wastewater into storm drains will require more elaborate treatment. Surface run-off should be segregated from the morter plant within the launching area and diverted to the storm water drainage system. Surface run-off contaminated by materials in a mortar plant or casting yard, if used, should be adequately treated before disposal into storm water drains.	Whole alignment/all times	CC		3		ProPECC PN 1/94
	(p) Runoff should be prevented from entering adjacent ponds through construction of bunds between works areas and ponds.	Whole alignment/all times	CC		3		--
	(q) The Contractor shall take all reasonable measures to minimise adverse impacts resulting from construction activities associated with the removal of sediments. These measures shall include ensuring that all plant and equipment and working methods meet the following criteria. • utilising appropriate suspended solids containment screen while removing sediment; • minimise disturbance of the channel base/pond bed while draining water and removing sediment.	Whole alignment/all times	CC		3		-
Section 8	• minimise leakage of excavated sediment during lifting; • prevent the overflowing of any container used to contain removed sediments.
	• in small scale works a barrier of sand bags should enclose the area;
	• sediment removal should be undertaken during the dry season whenever possible;
	• sediments should be removed from site immediately or stored away from the water course.
	During filling of ponds for Lok Ma Chau Station formation, displaced water should be directed through selected bunds to settle in defined fishponds within the contracts works area. The settled water shall only been discharged when it meets discharge standards.	Lok Ma Chau fishponds/all times	CC		3
	(r) The Contractor shall be responsible for disposing of all dredged sediments at an appropriate location depending on the volume and composition of the material.	whole alignment/all times	CC		3		--
	(s) If any office, works area canteen or toilet facilities are erected, foul water effluent should be directed to a foul sewer or to a sewage treatment facility either directly or indirectly by means of pumping or other means approved by the Engineer.	whole alignment/all times	CC		3		ProPECC PN 1/94
Section 8	(t) Temporary on-site storage of excavated materials from station and depot construction works shall be covered with tarpaulin or similar fabric during rainstorms. Any washout of construction or excavated materials should be diverted to the drainage system via sediment traps. Stockpiling of the excavated material can be minimised by scheduling the construction programme in a way that one section of the alignment can be constructed and completed before the excavation works of the next.	whole alignment / all times	CC		3		ProPECC PN 1/94
	(u) A cofferdam should be constructed during footbridge construction at Shenzhen River.	Shenzhen River/ during bridge construction.
	(v) Regular maintenance of all drainage systems is necessary.	All drainage systems/all times
	(w) Chemical wastes should be collected, stored and disposed of in accordance with the Code of Practice on the Packing, Labelling and Storage of Chemical Waste.	Whole alignment/all times	CC		3		WDO (Cap 354)
	(x) If contaminated material is excavated it shall be treated and/or disposal of to WENT landfill. If excavated material is heavily contaminated it may require disposal to SENT landfill.	Excavation areas/all times	CC		3
	(y) Transfer of material onto barges should be carried out slowly to prevent contamination.	sand fill location/all times	CC		3
	(z) Transfer of materials onto the platform should be carried out slowly to avoid sand falling off the conveyor.	Platforms/all times	CC		3
Section 8	Operational mitigation measures The following measures should be adopted for the operation of the Spur Line alignment:	whole alignment Des, C & O stages	DDE/CC	3	3	3
	A surface water drainage system shall be provided to collect track runoff. Where oils and lubricating fluids could be spilt, the track drainage channels discharge shall pass through oil interceptors and sediment traps to remove oil, grease and sediment before being diverted to the public storm water system or watercourse.	whole alignment Des, C & O stages	DDE/CC	3	3	3
	Silt traps, sediment basins and oil interceptors shall be designed to appropriate design standards, and whilst in use, regularly cleaned and maintained in good working order. The efficiency of these installations is dependent on regular cleaning and maintenance.	whole alignment Des, C & O stages	DDE/CC	3	3	3	ProPECC PN 5/93
	On-site drainage shall focus on areas where contaminated effluent may be generated and provide a clear segregation of clean and contaminated effluents.	whole alignment Des, C & O stages	DDE/CC	3	3	3	ProPECC PN 5/93
	Oily contents of oil interceptors shall be collected for recycling, or transferred to an appropriate disposal facility	whole alignment Des, C & O stages	DDE/KCRC	3	3	3
	The design of the footbridge should minimise disturbance of the sediment through careful design of the size and shape of pier supports.	footbridge at LMC station/Des	DDE (for footbridge)	3	3	3
Section 8	Sewage Effluent from Station Works Force Water quality impacts caused by sewage effluent generated by the work force at the station should be effectively controlled through on-site waste water treatment facilities prior to discharge to the reedbed system located to the east of Lok Ma Chau Station. The reedbed system requires sufficient capacity to be able to polish the sewage treatment plant effluent and a proportion of river water to comply with ZDP.		DDE/CC	3	3	3	Technical Memorandum Standards for Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters (TM).
	Monitoring The assessment of water quality impacts has concluded that routine environmental monitoring of water quality during construction should be carried out as specified in the EIA report, to minimise impacts on downstream water quality. The specified mitigation measures should be written into contract documents.	All sites/construction	CC	3			--
	Routine audit of the implementation status of specified mitigation measures during the construction and operation phases should be undertaken by the project proponent or his representative. Such audits should be well documented and include action procedures in the case of non-compliance.	All sites/ Construction	CC		3

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