Conclusions and recommendations From our careful examination of plans, I am of the opinion that the proposed sewage disposal system, if properly constructed in accordance with the plans and if operated with care and efficiency should satisfactorily care for the sewage contributed by a population of 18 persons. Furthermore, it appears that there is sufficient area available to permit of extending the subsurface irrigation system should it be found necessary to do so in the future. I would, therefore, recommend that the plans be approved on condition that no sludge be discharged into any stream or other body of water and that the sludge shall not be buried or discharged onto the surface of the ground within 300 feet of any stream or watercourse tributary to the Pocantico river. Respectfully submitted, ALBANY, N. Y., April 20, 1917 THEODORE HORTON, PERMIT Application having been duly made to the State Commissioner of Health, as provided by section 76 of chapter 49 of the Laws of 1909, the "Public Health Law," as amended by chapter 553 of the Laws of 1911, constituting chapter 45 of the Consolidated Laws, permission is hereby given to Dr. John T. MacCurdy to discharge effluent from the proposed sewage disposal plant for his property near Pleasantville into the waters tributary to the Pocantico river within the town of Mount Pleasant in accordance with the plans accompanying the petition, under the following conditions: 1. That this permit shall be revocable at any time or subject to modification or change when in the judgment of the State Commissioner of Health such revocation, modification or change shall become necessary. 2. That the issuance of this permit shall not be deemed to affect in any way action by this Department on any future application that may be made for permission to discharge additional sewage or effluent into the waters of this State. 3. That both the sewers and the sewage disposal works shown by the plans approved this day shall be fully constructed in complete conformity with such plans or approved amendments thereof. 4. That no sewage sludge or scum from any part of the disposal works shall be discharged into Pocantico river or any other watercourse or body of water. 5. That all sewage sludge or scum from the disposal works shall be properly buried beneath the ground surface at points not less than 300 feet from any stream or watercourse tributary to the Pocantico river. M. NICOLL, Jr., Acting Deputy State Commissioner of Health April 30, 1917 MT. PLEASANT (Rosary Hill Home) HERMANN M. BIGGS, M.D., State Commissioner of Health: I beg to submit the following report on our examination of plans for sewage disposal for the Rosary Hill Home near Hawthorne in the town of Mount Pleasant, Westchester county, submitted to this Department for approval on April 28, 1917. This institution is a cancer hospital maintained by the Servants of Relief for Incurable Cancer and is located near the Hawthorne railroad station of the Harlem division of the N. Y. C. & H. R. R. R., about 1/2 mile from the Saw Mill river. A number of inspections of the institution have been made by representatives of this Department as the results of complaints of insanitary conditions caused by the overflow of cesspools. It was found from these inspections that the institution has sufficient capacity to accommodate 75 patients but that the average population including patients and attendants is about 60. The water supply is derived from a 2-inch driven well and the water consumption is estimated at from 4,000 to 6,000 gallons per day. The sewage of the institution is cared for in cesspools which are inadequate to properly care for the sewage with the result that the overflow from the cesspools flows over the surface of the ground giving rise to very insanitary conditions below the hospital. The soil on the hospital grounds is of a sandy character and overlies rock which outcrops on the property. Plans for the disposal of sewage for the institution were first submitted for approval on October 25, 1916, and after careful examination of them, which showed that they were not in satisfactory condition for approval, they were returned on November 2, 1916, with the recommendation that they be so modified as to provide for a more efficient and satisfactory method of disposal of the sewage. The plans now submitted were prepared by the Wulff Engineering Co., Inc., civil and constructing engineers, Tarrytown, N. Y., and comprise duplicate blue prints of the following sheets: (1) General plans showing relative location of institution and sewage disposal plant. (2) Details of the disposal plant. Sewage disposal plant The proposed disposal plant is to consist of a settling tank, dosing tank and subsurface irrigation system to be located across the driveway below the institution. It appears that a number of lots are to be acquired by the hospital as a site for the disposal plant. The report of the designing engineers submitted with the plans states that the soil at the disposal plant site is a sandy loam well suited for this type of disposal. The entire area is to be grubbed before the disposal plant is installed. It is important that the ground be properly rolled and compacted before laying the distributing system. Settling tank The proposed settling tank is to be a covered concrete structure 20 feet long by 8 feet wide by 6 feet deep inside dimensions with a depth below the flow line of 5 feet. It will have a capacity of 6,000 gallons, equal to about one day's flow of sewage. The tank is to be provided with a sludge pipe by means of which the sludge may be drawn off by gravity flow and disposed of in trenches near the tank. Dosing tank The dosing tank is located adjacent to the settling tank and has a capacity of about 130 cubic feet. It is to be provided with a 5-inch discharge siphon by means of which the settled effluent from the settling tank is to be discharged intermittently into the distributing system of the subsurface irrigation system. Subsurface irrigation system The proposed subsurface irrigation system is to consist of a 3-way manhole, 3 diverting chambers and 24 lines of 4-inch distributing tile, about 170 feet long each. Each diverting chamber is provided with 8 outlets, each of which discharges into one line of distributing tile. These chambers are so arranged as to permit of shutting off the flow from 4 or from all of the lines at each diverting chamber, thereby permitting of throwing out of use any section of the field if necessary and giving considerable flexibility of operation. The system is to contain about 4,000 feet of tiling equal to about 66 feet per person and will cover an area of approximately 6 acre and will, therefore, provide for a rate of operation of about 10,000 gallons per acre per day. Each line of distributing tile which is to consist of 4-inch agricultural tile laid with open joints protected with tar paper, is to be laid parallel with the contours of the ground. The tile is to be laid in trenches 16 inches deep and are to be surrounded with clean sand and gravel. Two or three inches of sand or gravel should be placed below the lines of lateral distributors and it would be well also to cover the lines with two or three inches of the same material. Conclusions and recommendations From our careful examination of the plans I am of the opinion that the proposed sewage disposal plant if properly constructed in accordance with the plans and if operated with care and efficiency should satisfactorily care for the sewage contributed by the present population of the hospital and I would, therefore, recommend that the plans be approved. ALBANY, N. Y., May 3, 1917 The plans were approved May 9, 1917. Respectfully submitted, THEODORE HORTON, Chief Engineer MT. PLEASANT (Westchester Co. Penitentiary) HERMANN M. BIGGS, M.D., State Commissioner of Health: I beg to submit the following report on our examination of plans for the disposal of sewage at the Westchester county penitentiary submitted to this Department for approval on March 22, 1917. Additional data submitted at your request were received on April 10, 1917. The penitentiary is situated in the southern part of the town of Mt. Pleasant near the divide between the Saw Mill river and the Bronx river at a point about one mile east of Eastview. According to the data submitted by the designing engineers the institution will have a minimum population of 100 and a maximum population of about 300 with an average of about 200. The average daily water consumption is estimated to be 20,000 gallons. The water supply of the institution is obtained from wells located near Saw Mill river at a point about 5,000 feet from the institution. Sewage disposal A communication received from the designing engineers, states that plans have practically been completed for conveying the sewage from the penitentiary and from the proposed alms house and the new county hospital located near the penitentiary to and discharging it into the upper end of the Bronx Valley sewer at White Plains. Until this project is carried out it is proposed to care for the sewage from the penitentiary in a sewage disposal plant consisting of a screen chamber, setiling tank, dosing tank and subsurface irrigation system. Screen chamber The screen chamber is to be located at the inlet end of the settling tank. It is to be 4 feet square and 3 feet deep inside dimensions and is to be provided with a bar screen composed of 1/4-inch by 1-inch iron bars spaced 11⁄2 inches in the clear. Settling tanks From the screen chamber the screened sewage is to be discharged into a covered settling tank through a submerged inlet. The proposed tank is to be rectangular in plan, 25 feet long, 10 feet wide inside dimensions and from 8 to 10 feet deep below the flow line. It will have a capacity of about 16.000 gallons and will, therefore, provide for a detention period of the sewage of about 20 hours on the basis of design used. Dosing tank From the settling tank the clarified effluent is to be discharged through a submerged outlet into a dosing tank located at the outlet end of the settling tank. This tank is to be provided with 2 6-inch automatic discharge siphons of the Miller type by means of which the settled sewage is to be discharged alternately into the two sections of the proposed subsurface irrigation system. Subsurface irrigation system According to the report submitted with the plans the soil at the site of the disposal field is gravel mixed with more or less clay to a depth of about 4 feet. It is stated that the soil is rather compact and at a depth of 4 feet changes sharply to a very stiff hard-pan. The subsurface irrigation system is to contain 6,000 feet of 4-inch distribting tile laid in trenches 18 inches wide and about 22 feet deep. The joints of the distributing tile are to be covered with strips of tar paper and the lines of tile in the trenches are to be surrounded and covered to a depth of 12 inches with unscreened sand. The distributors which are to be spaced 15 feet center to center are to be laid on slopes of 1/32 inch ́per foot. Each section of the subsurface irrigation system is to be provided with 6 distributing or gate chambers from each of which is to extend 6 lines of lateral distributors. These distributing chambers are so arranged that the lateral lines connected with each chamber will be filled with sewage before it overflows into the next lower distributing chamber. This arrangement should provide for a satisfactory distributing of the sewage through the entire system. The system will contain 6,000 feet of lateral distributors equal to from 20 to 60 feet per person and will cover an area of about 2 acres. The rate of operation will therefore be from 5,000 to 15,000 gallons per acre per day. Although the soil at the proposed site is not very favorable for the disposal of sewage by means of subsurface irrigation, it is probable that with the comparatively low rate of operation and the rather liberal amount of distributing tiling to be used it will satisfactorily care for the sewage from the penitentiary provided the plant is properly constructed in accordance with the plans. There appears, moreover, to be adequate area available for the extension of the subsurface irrigation system should it be found necessary to do so in the future. It is important, however, that the disposal plant shall be operated with care and efficiency at all times. In view of the above I would recommend that the plans be approved on condition that whenever required the subsurface irrigation system shall be enlarged or extended or that some other equally satisfactory method of disposal shall be provided in accordance with plans to be approved by this Department. Respectfully submitted, THEODORE HORTON, ALBANY, N. Y., April 17, 1917 The plans were approved April 17, 1917. NEW CASTLE (David M. Goodrich) Plans for a sewage disposal plant to serve the buildings on the premises of Mr. David M. Goodrich, near Mt. Kisco in the Town of New Castle, Westchester Co., N. Y., were submitted to this Department for approval on June 28, 1917. The plans contemplated the construction of a disposal plant on the said premises consisting of a settling tank, a dosing tank and a subsurface irrigation field. After a careful examination by the Engineering Division the plans were approved on August 24, 1917. NEW HARTFORD (Sewer District No. 1) HERMANN M. BIGGS, M.D., State Commissioner of Health: I beg to submit the following report on our examination of plans for sewer extensions in Sewer District No. 1 in the town of New Hartford, Oneida county, submitted to this Department for approval by the sewer commissioners on July 23, 1917. Original plans for sewerage and sewage disposal for this sewer district which is situated between the city of Utica and the village of New Hartford, were approved by this Department on April 12, 1912. These plans provided for a comprehensive sanitary sewer system and for a sewage disposal plant consisting of an Imhoff tank and sludge drying bed to be constructed and operated in conjunction with the village of New Hartford. The sewer system and sewage disposal plant provided for by these plans have been constructed and put in operation. The plans now submitted provide for the construction of some 510 feet of 6-inch sewers in Fairfax place and Cornwall place tributary to the existing 10-inch sewer in Sunset avenue. Although the original plans approved showed sewers in these streets they did not show details of the sewers. The proposed sewer in Fairfax place is to be 170 feet long and is to be laid on a slope of .706 per cent. The sewer in Cornwall place is to about 339 feet long and is to be laid on a slope of 1.325 per cent. A flush tank is to be constructed at the upper end of the proposed sewer in Fairfax place and a manhole at the intersection of the sewer in this street with the sewer in Cornwall place. Another manhole is also to be provided at the intersection of the proposed sewer in Cornwall place with the existing sewer in Sunset avenue. From our examination of the plans it was found that the proposed sewers if properly constructed should satisfactorily meet the needs for which they were designed and I would, therefore, recommend that the plans be approved and a permit be issued allowing the discharge of sewage from these sewers into a stream tributary to Sauquoit creek on condition that the sewage to be collected by these sewers shall first be passed through the existing sewage disposal plant. Respectfully submitted, ALBANY, N. Y., July 27, 1917 THEODORE HORTON, PERMIT Application having been duly made to the State Commissioner of Health, as provided by section 77 of chapter 49 of the Laws of 1909, the "Public Health Law," as amended by chapter 553 of the Laws of 1911, constituting chapter 45 of the Consolidated Laws, permission is hereby given to the Board VOL. II — 4 |