Western New Territories Supply-Stage I
337. The inadequate supply to the Ping Shan and Yuen Long areas through one 5″ and one 6″ main from the Hung Shui Hang Intake was mentioned in last year's report. Their replacement by four and half miles of 12" diameter main from the intake to Yuen Long Market was completed and the pressure in the above areas was greatly improved.
338. In addition, an 8" supply main about four and half miles long from Tai Lam Chung to supply Castle Peak Market and San Hui neared completion, and an access road was formed to the site of a proposed 1 million gallon service reservoir to serve the Tai Lam Chung, Castle Peak and San Hui areas.
Deep Well Investigation-New Territories
339. Six boreholes were drilled at selected sites by a specialist firm, with varying success, and a seventh was under way at the end of the year. They ranged in depth from 92 ft. to 315 ft. The best results were obtained from one at San Tin, which was sunk to a depth of 186 ft. and yielded an average of 4,300 gallons per hour of good quality water over a 72-hour period. The next best results were obtained from a 110 ft. deep borehole sited near Ping Shan, which yielded the much smaller quantity of 860 gallons per hour over a 4-day period. The remaining four holes were abandoned owing to negligible yield, but the one being drilled at Chuk Yuen showed promise; an initial test indicated a yield of approximately 5,000 gallons per hour.
New Territories Supply
MISCELLANEOUS WORKS
340. (a) Tai O Supply-Tai O is a fishing village of about 10,000 inhabitants situated on the north-west coast of the Island of Lantao. It had no piped water supply and the inhabitants depended on wells which were very inadequate. Schemes for the provision of a piped water supply to this village had been under consideration for some time. After a considerable amount of preliminary investigations it was finally decided to construct a small dam to impound approximately half million gallons at about the 300 ft. contour in the Yi O Valley, which is about three miles to the south of Tai O, and pipe the water through a 6" diameter pipeline to the village. The dam has been completed and approximately 10,000 ft. of pipeline laid.
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Western New Territories Supply-Stage I
337. The inadequate supply to the Ping Shan and Yuen Long areas through one 5"′′ and one 6′′ main from the Hung Shui Hang Intake was mentioned in last year's report. Their replacement by four and half miles of 12" diameter main from the intake to Yuen Long Market was completed and the pressure in the above areas was greatly improved.
338. In addition, an 8" supply main about four and half miles long from Tai Lam Chung to supply Castle Peak Market and San Hui neared completion, and an access road was formed to the site of a proposed 1 million gallon service reservoir to serve the Tai Lam Chung, Castle Peak and San Hui areas.
Deep Well Investigation-New Territories
339. Six boreholes were drilled at selected sites by a specialist firm, with varying success, and a seventh was under way at the end of the year. They ranged in depth from 92 ft. to 315 ft. The best results were obtained from one at San Tin, which was sunk to a depth of 186 ft. and yielded an average of 4,300 gallons per hour of good quality water over a 72-hour period. The next best results were obtained from a 110 ft. deep borehole sited near Ping Shan, which yielded the much smaller quantity of 860 gallons per hour over a 4-day period. The remaining four holes were abandoned owing to negligible yield, but the one being drilled at Chuk Yuen showed promise; an initial test indicated a yield of approximately 5,000 gallons per hour.
New Territories Supply
MISCELLANEOUS WORKS
340. (a) Tai O Supply-Tai O is a fishing village of about 10,000 inhabitants situated on the north-west coast of the Island of Lantao. It had no piped water supply and the inhabitants depended on wells which were very inadequate. Schemes for the provision of a piped water supply to this village had been under consideration for some time. After a considerable amount of preliminary investigations it was finally decided to construct a small dam to impound approximately half million gallons at about the 300 ft. contour in the Yi O Valley, which is about three miles to the south of Tai O, and pipe the water through a 6" diameter pipeline to the village. The dam has been completed and approximately 10,000 ft. of pipeline laid.
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