Engineering and Contracting . Park site furnishes an almost ideallocation. The accompanying tunnel plan. , shows a series of soundings taken at thispoint, and indicates a gently sloping lakebottom, for a distance of r\vo miles andover, on the line of the tunnel. .\t about2,100 ft. from shore, the depth of water is25 ft.: at ft. it is about 33 ft., and atG,4J0 ft. out it is nearly -IJ ft. The averageslope of the lake bed is thus less than 1per cent., furnishing a spot sufficiently levelto place an intake at any desired point. (Alldepths are referred to Zero lake level). The results o
Engineering and Contracting . Park site furnishes an almost ideallocation. The accompanying tunnel plan. , shows a series of soundings taken at thispoint, and indicates a gently sloping lakebottom, for a distance of r\vo miles andover, on the line of the tunnel. .\t about2,100 ft. from shore, the depth of water is25 ft.: at ft. it is about 33 ft., and atG,4J0 ft. out it is nearly -IJ ft. The averageslope of the lake bed is thus less than 1per cent., furnishing a spot sufficiently levelto place an intake at any desired point. (Alldepths are referred to Zero lake level). The results of a series of borings made atthis location, indicate that at about 6,400 Victoria Park, in a depth of 49 ft. ofwater, shale was struck at 82 ft. depth. Atabout ft. from shore, in a depth of 42ft. of water, shale was struck at a depth of72 ft., and at corresponding depths at otherlocations, the depth of the shale at the shorebeing 50 ft. These borings all show that itis quite possible to tunnel in shale, to an in-. Fig. 3. Sectional Elevations of Proposed Intake Crib, Lake and Shore Shafts andTunnel for Proposed Additional Water Supply for Toronto, Ontario. have in operation at Morley .\venue a sys-tem of purification which will render thiseffluent innocuous. Dr. Nasmith, under instructions from , has for six months past been con-ducting experiments with a view tii arrivingat the best solution of this particular prob-lem, and as soon as a conclusion is reached,a recciinmendation will be made to the coun-cil to give effect thereto. r«—The question of turbidity isone of much importance. In order to ascer-tain the ciinditions at the selected point, ob-servations have been taken, whenever therewas any indication of disturbance of the clay,since the middle of September, but it has onlybeen possible to obtain samples on three days,because of the fact that the turbidity hasnot extended out to the proposed site of theintake crib. In each case the obs
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