948
Inability to provide detail
plans.
Scheme for District No. 1.
District. No. 2.
District No. 3.
District No. 4.
Ground above Wanchai to steep for building.
District No. 5.
District No. 6.
Outfalls for Separate System portions.
Existing drains to be made suitable for
Chinese
districts.
Combined System simple
THE HONGKONG GOVERNMENT GAZETTE, 27TH SEPTEMBER, 1890.
To follow the description of the lines of sewers I am now about to describe, a thorough knowledge of the levels and contours of the ground is necessary. I regret that, being able to spare but a short portion of time, and the plans of Mr. COOPER's Scheme having been hurried home, I have not drawn a complete plan shewing all the lines of sewers.
Commencing at the extreme West or No. 1 subdivision of the Yellow or Separate System there are but few houses to deal with. The drainage of these, I would disconnect from the storm-water drains, into which, it is at present delivered; and carry by a small stone-ware pipe discharging into the harbour to the outfall, marked L 1. allowing the present drains to take the entire rainfall and subsoil waters by the present outfalls to the harbour.
I may mention that in this area are several swampy places, that require proper subsoil drainage.
The sewage of District No. 2 would be collected along the Caine Road and discharged into the harbour by a pipe sewer at the outfall marked L 2. The rainfall and subsoil waters for this district discharging, as at present, down the Peel Street drain.
The sewage of District No. 3 would be discharged by a pipe into the harbour at the outfall marked L 3.
The sewage of District No. 4 would be discharged at L 4. The rainfall of districts Nos. 3 and 4 being discharged by the present drains.
The ground above the Chinese Quarter in Wanchai is too steep to be built on to any extent.
In district No. 5, the Seamen's Hospital and Morrison Hill Terrace stand on high ground. The rest of buildings in this district are chiefly warehouses situated along the Praya front. The small amount of sewage of this district would be discharged into the harbour at the outfall, marked L 5. The rainfall being dealt with as at present.
The Western portion of District No. 6, bounded by Percival Street and Bowrington Canal, is at present partly occupied by a sugar refinery and warehouses. It is probable that other factories may be located here, and that, in the future, a separate drain will be necessary. The sewage, from the remaining part of the District, would be discharged into the sea at the outfall marked L 6. The rainfall being dealt with as at present.
The outfalls for the Yellow or Separate System, are of two kinds, those for the rain water being as at present. Fig. I, Plate 2, gives a sketch of an existing outfall. The sewage discharge can be dealt with as shewn by Fig. 2, Plate 2, consisting of a cast iron pipe carried to a suitable distance and depth to ensure ample dilution and diffusion of the sewage particles.
The entire sewage and rainfall of the Chinese parts of the city coloured Red, I proposed to convey in those of the existing drains which are suitable for the conveyance of sewage. Where the drains are defective they must be either repaired or reconstructed and thoroughly ventilated along their entire course. The whole of the sewage and rainfall being discharged direct into the harbour, but in no case connected with the few large storm water drains (shewn by blue lines), that take the rainfall from the European districts, and the hill sides
situated above.
On this Combined System, the drainage of the red portion will be a simple and comparatively inexpensive and inexpensive. undertaking.
Kennedy Town and Causeway Bay not dealt with.
Outfalls for Chinese districts.
Chinese and
Earopean
districts unalterable.
Extension of Chinese districts.
Difference from
Mr. Cooper's
scheme.
I have not dealt with Kennedy Town or Causeway Bay district, as they are not yet built over.
The outfalls, for the red or combined portions, can be dealt with as shewn by Fig. 3, Plate 2.
This outfall is practically the same as the river outlet at Windsor Castle, which plan is given as a model one by Sir ROBERT RAWLINSON in the "Suggestions for Sewage, &c." issued by the Local Government Board, and which has become the usual plan adopted in similar cases at home.
It may be argued, that the two portions shewn by the red and yellow colours, are liable to alteration. This is practically impossible, as the districts in which Chinese houses may be built, are not only very clearly defined and restricted by the European Reservation Ordinanec, but in some places, are prevented from changing, by the nature of the Hill-sides, the Public Gardens, and the Military Reserve. That additional ground must become occupied by Chinese, is almost certain, but the ground, which they will occupy, is clearly defined; such as reclama- tion from the Harbour, Kennedy Town, Wauchai and Causeway Bay, which are capable of accommodating a vast increase in the number of Chinese, and any such increase can be dealt with in entire conformity with the proposed scheme.
It will readily be seen, that I differ very essentially from Mr. COOPER's Scheme, in providing outfalls for sewage into the harbour at a number of points, instead of at the four points C. 1, C. 2, C. 3 and C. 4 marked on
Plate I.
4
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