solids will later be removed by rotary screens and transported and dumped at sea, while the liquids will be passed to the tidal flow through the harbour by means of a submarine pipe outfall.
166. Detail plans of schemes to cover a further three areas (Wanchai, North Point and Kowloon East) were almost complete with the exception of the design of the submarine outfalls. The intercepting sewer to serve the Wanchai area was laid.
Private Work
167. The number of proposed private works submitted for examination during the year was 699, which shows a slight increase over the number submitted in 1955/56. The number of applications for Crown land sales, permit areas, etc., was 611 and this item shows a slight decrease as against the number received during the previous year.
168. 1,261 drainage connexions were provided and this figure, in conformity with the longer length of drainage laid, shows an increase of over 200 against those provided in 1955/56.
ELECTRICAL AND MECHANICAL OFFICE
Chief Electrical and Mechanical Engineer,
J. C. Brown, B.Sc.(Edin.), M.I.E.E., M.I.Mech.E.
General
169. The maintenance, repair and overhaul of all Government electrical and mechanical equipment (exclusive of marine equipment) including motor vehicles, road rollers, mobile cranes, bulldozers, steam boiler installations, air conditioning plants, lifts, motors, automatic traffic control lights, printing machinery, refrigerators domestic appliances, etc. continued to be carried out and many items of new plant were installed.
Mechanical Section
170. At the end of the year, the total number of Government vehicles in service was 924 against an authorized establishment of 1,003. This number comprised 182 motor cycles; 106 cars; 222 light utility vans; and 414 heavy load carrying and special purpose vehicles. During the year 127 new vehicles were received and put into service and 178 old vehicles were taken out of service and disposed of on the recommendations of
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