Q 18
DRAINAGE OFFICE.
PUBLIC WORKS RECURRENT,
87. Maintenance of Sewers, Nullahs, etc.:-Sewers, storm water drains, and trained nullahs generally were cleansed, repaired and maintained in good condition throughout the Colony. Open nullahs and channels were cleansed by the Sanitary Department. Automatic flushing tanks were operated during periods of low tide. Normal sand deposits were cleared as they occurred. Septic tanks in Hong Kong at Lugard Road, Repulse Bay, Deep Water Bay and Farm Lots Nos. 29 and 30 Pokfulam were periodically sludged. The septic tank and its pumping plant on the foreshore at North Point were maintained in working order. Many defective traps, gullies, gratings, etc., were renewed.
88. Typhoon and Rainstorm Damages:-Sand deposits resulting from heavy rainstorms were removed from the large nullahs and storm-water drains throughout the Colony and conveyed to approved dumps. The main nullahs treated in Hong Kong were Wongneichong between Sing Woo and Gloucester Roads, Sookunpoo around the playing field area and at Aberdeen. Those treated in Kowloon and New Kowloon were situated at Waterloo Road, Kai Tak, Sung Wong Toi, Gascoigne Road, Nelson Street, Argyle Street, Mong Kok, Tonkin Street, Hing Wah Street, Kom Tsun Street and open cut off same.
PUBLIC WORKS EXTRAORDINARY.
89. Latrine, Electric Road:-A sewer connexion was given to this latrine.
90. Wongneichong Development:-The contract for the construction of the main nullah between Blue Pool and Tai Hang Road was completed on the 26th June, 1939. The work consisted of 340 feet of invert, 340 feet of walling and 174 feet of reinforced concrete arching. New sewers and storm water drains, varying in size from 21" to 6" in diameter, were constructed to a total length of 468 feet.
91. North Point Reclamation-sewer extension-This work was referred to in paragraph 129 of last year's report:-Similar conditions were experienced as in the previous year and no work was commenced.
92. Anti-Malarial Works-This work was referred to in paragraphs 146, 163, 182 and 194 of last year's report:-In Hong Kong, work was temporarily completed at Pokfulam between the Queen Mary Hospital and Sandy Bay, 2,160 feet of channel were trained in this area varying in diameter from 45″ to 12″. ($7,000 was transferred from savings on this vote to enable the Hon. Director of Medical Services to carry out temporary nullah training at Pat Heung, Lai Chi Kok and Kowloon City).
93. General Works, Drainage (a) Training Nullahs:-In Hong Kong, the parapet walling of Tong Shui Road, North Point was extended for a distance of 500 feet and for a length of 102 feet at Kennedy Road. An experimental "Ceylon Flushing Syphon" and Dam were constructed at Mount Cameron. Various channels of 18″ and 15″ in diameter were constructed to a total length of 190 feet. In Kowloon, 486 feet of parapet walling was constructed. In the New Territories at Un Long, seventeen feet of double walling, 370 feet of single walling and invert, together with 5,000 square feet of nullah decking were built. A 45" diameter storm-water drain to a length of 310 feet was laid at Castle Peak.
94. General Works, Drainage (b) Miscellaneous:-In Hong Kong, new sewers and storm water drains, varying from 18" to 6" in diameter, were constructed to a total length of 4,163 feet and 129 drain connexions were made. In Kowloon, new sewers and storm water drains, varying from 30" to 6" in diameter, were constructed to a total length of...