Preliminary reports on the disposal of New York's sewage.

  • New York (N.Y.). Metropolitan Sewerage Commission
Date:
1912-[1914]
Catalogue details

Licence: In copyright

Credit: Preliminary reports on the disposal of New York's sewage. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    APPENDIX D INTENSIVE PURIFICATION OF NEW YORK'S SEWAGE The estimated approximate cost of works for collecting the sewage of New York City, carrying it to Barren Island, treating it there in Emscher tanks and percolating filters and then discharging it into Rockaway Inlet follows: Land $4,700,000 Sewers to Barren Island 51,000,000 Pumping stations 12,140,000 Treatment works 49,900,000 Outfall works 5,000,000 $122,740,000 Engineering and Contingencies^ 15% 18,410,000 Total $141,150,000 The main assumptions on which the estimate is based are as follows: Works of capacity sufficient to collect and dispose of the total volume of sewage (dry weather flow only) of New York City for the year 1940. Estimated population in 1940 9,000,000 Estimated mean sewage flow in 1940 i,330 mil. gals, per 24 hrs. The estimated population and sewage flow of New York in 1940, by boroughs, the sewers leading to Barren Island, and the requirements at all the pumping stations, except the main one, are the same as those contained in Ap- pendix B. The estimate of cost given above is, at the best, but a very rough approxima- tion, and should be considered only as such. [0440H]