2 Appendix B1.
manurial salts, but for improvement of the humus content of the soil. The liquid effluent would be eminently suitable for irrigation, especially by virtue of its nitrogen content. These are, however, matters on which I am not expert; and I would welcome comment and criticism on this aspect. From a Publio Health aspect, I understand that such treatment will materially conduce to prevention of epidemics.
6.
To arrive at some estimate of costs, which must be considered early in this planning, I have with assistance from Major Page (who has since left the Colony) prepared a tentative scheme for Kowloon, of which further details are in preparation; they are unfortunately not sufficiently advanced for submission.
7.
as follows; –
8.
The Kowloon area has been divided into 4 main sections,
Section 1.
Seotion 2.
Section 3.
Shamshuipo, Lai Chi Kok, New Mong Kok, New Yaumati. (This includes proposed reclamations, as visualized
in my March, 1946, report).
Tsimshatsui, Hung Hom, Yaumati, Mong Kok, Ma Tau Kok, Ho Mun Tin.
(This included areas at present not developed
fully).
Kowloon City, Kowloon Tong, Kau Pui Shek. (This includes proposed developments at Kowloon
Chai).
Section 4. Kai Tak, and Eastern Shore of Kowloon Bay to
Kun Tong
(This area is at present undeveloped. The pro- posals of Major Page in this Section will need considerable amendment owing to ground levels, but this need not affect the principle of the Scheme.
For purposes of calculation, it has been assumed that the population of Kowloon will be 750,000. If a greater number has to be catered for, it will mean larger main sewers, and larger pumps. The effect of this can be estimated when the scheme is considered in greater detail. It will be seen that a great per- centage of the total capital cost lies in the small 6" branches and connexions, which would not be materially increased by a denser population, in as much as only one connexion is made to each "block".
9.
On the basis of 30 gallons per day per head of popu- lation the total daily flow of water is 22,500,000 gallons. of the 30 G.P.D. some 23 gallons is water works water, the remaining 7 G.P.D. being "flushing" water, normally provided by well-water. The question of some salt being introduced to the sewage from brackish wells should be studied by the Sanitation Chemists, in connexion with the decision on the best type of treatment to adopt.
10.
My rough figures of cost, on these assumptions, are as follows. All costs are shown in Hong Kong dollars, at today's prices, which have been obtained from the appropriate departments.
31