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2.
Before the findings of the new studies are available, the conclusions in the 1982 studies are.
still considered relevant. Concerning construction impacts, it was concluded that "spillage during dredging and losses from the in-fill may in the short term be expected to cause local discoloration of the waters and even some local shoaling but in longer term the quantities are too small compared with background sediment levels to have any significant effect." The effects are considered as short term and localized and the quantities of suspended solids are deemed to be insignificant in relation to the background sediment levels. With the considerable separation and the prevailing water movements in the east-west directions. the amount of suspended solids generated by the activities at Chek Lap Kok is unlikely to be significant in causing detrimental effects to your operations at Castle Peak. Nevertheless, your concern about suspended and/or dissolved solids is accepted. The re-assessment of the impacts to water quality will be made in the coming studies and appropriate mitigation measures and monitoring will be implemented.
Effect on the passage war for your coal carriers
It is noted that your large coal carriers transit Ma Wan in a narrow tidal window with a pilot on board, traffic lights in operation and a Marine Department launch in escort. I can foresee no conflict between your coal carriers and marine traffic due to the airport construction which can be scheduled to pass Ma Han at any period. Concerning your dredged fairway between Ma Wan and Castle Peak, no obstruction or delay to your carriers is anticipated since construction barges are not constrained by their draughts and can navigate outside the deep channels or even pass along south of the Brothers. Close liaison and co-ordination between you and the airport contractors surely will avoid any possible disturbance.
As mentioned previously, the shoaling problem is generally localized and short term. The effects to your approach channels will be minimal. Further sedimentation modelling will be conducted in the coming environmental studies and the effect on existing navigation channels will be fully addressed.
Concerning the stability of the side walls of your dredged channels, I do not envisage that any disturbance will be caused by activities related to the new airport. The dredging and filling operations are generally restricted within the site and the adverse effects to the seabed thousands of metres away are extremely remote.
Your interest in maintaining an undisrupted fuel supply to the power stations is accepted. However, it appears that the problems are not serious and can be easily accommodated.
3.
Effect on 11kV submarine cable from Tung Chung to Chek Lap Kol:
I assume that this item does, not constitute an objection to the project, but merely draws attention to the supply line. All residents on Chek Lap Kok will be vacated in 1991 and the airport contractor's will be your sole customers on the island. To maintain and protect the power supply to the Chek Lap Kok during the construction period will be the mutual interest of your company and the contractors. Once the
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