The dosing tank is to be located adjacent to the outlet end of the settling tank and the settled effluent is to flow from the settling tank through a submerged outlet into the dosing tank. This tank is to be provided with an automatic discharge siphon by means of which the effluent is to be discharged intermittently into the subsurface irrigation system. A gate chamber or manhole is to be provided at the upper section of the subsurface irrigation system on the line of the outlet pipe from the dosing chamber. Two branches each of which is to be provided with a 4-inch gate valve, extend from the manhole to the distributing system of the subsurface irrigation field. This distributing system is to consist of 2 4-inch mains laid with cemented joints and 12 lines of 4-inch laterals 100 feet long each laid with open joints on slopes of 5 inches per 100 feet. The lines are spaced 10 feet apart and are to be laid at a depth of 12 inches below the surface of the ground. The joints of the lateral distributors are to be protected with strips of tar paper and surrounded with coarse material such as broken stone or gravel. The system will contain 1,200 feet of distributing tile equal to 20 feet per person and will cover an area of approximately 1% acre. The rate of operation will, therefore, be about 10,000 gallons per acre per day on the basis of design used. This is a moderate rate under the proposed conditions. The subsurface irrigation system is to be located at the foot of a fairly steep slope and I am of the opinion that the area of the field should be protected against surface wash by the construction of a gutter on the upper side of the field by means of which the surface water may be intercepted and carried around the field thereby preventing the field from being washed out or injured by heavy storms. It may also be found necessary to construct a drained trench about 1 foot wide and 4 feet deep filled with broken stone or gravel above the disposal area for the purpose of intercepting the ground water flow during wet seasons of the year. From our careful examination of the plans I am of the opinion that the proposed sewage disposal system should satisfactorily care for the sewage of the building to be served by it, assuming that the population to be cared for will not exceed 60 persons. There appears moreover, to be sufficient area available to permit of extending the subsurface irrigation system in the future if necessary. I would, therefore, recommend that the plans be approved on condition that a gutter be constructed on the upper side of the subsurface irrigation field for the purpose of intercepting and carrying off surface water. Respectfully submitted, ALBANY, N. Y., June 6, 1917 The plans were approved June 7, 1917. THEODORE HORTON, DRESDEN (H. W. Starr) HERMANN M. BIGGS, M.D., State Commissioner of Health: I beg to submit the following report on an examination of plans for a sewage disposal system at the residence of Howard W. Starr near Huletts Landing, town of Dresden, Washington county. These plans which were submitted for approval on August 24, 1917, comprise : 1. A plan in duplicate showing general layout and sections The residence of Mr. Starr is only occupied during about four months in the summer and the population contributing sewage is said to be about ten. With an estimated amount of sewage of 100 gallons per capita per day the total amount will probably be about 1,000 gallons per day. The proposed disposal plant is to consist of settling tank, a dosing tank and two intermittent sand filters. The effluent will be discharged into Lake George. The settling tank is to be 5 x 8 feet in plan and is to have a depth of 5 feet and a capacity of 1,500 gallons which corresponds to about 12 days' flow of sewage. The dosing tank is to be 5 x 6 feet in plan and will have an effective depth of 2 feet, giving a capacity of 450 gallons, and will, therefore, be emptied about two times a day. An automatic siphon is to intermittently discharge the contents of the tank to one or both sand filters. The siphon is placed outside of the dosing tank and no provision is made for inspecting or repairing siphon, except by excavating fill around siphon. The sand filters are two in number and are to be 20 x 2134 feet in size and contain 3 feet of sand. The tank effluent is to be distributed on each filter by means of two troughs placed on the surface of the beds. The underdrains in each bed are to consist of two lines of 4-inch tile pipe laid with open joints. The effective size and the uniformity coefficient of the sand to be used in the filter beds are not given. The effective size should range from .20 to .35 mm. and the uniformity coefficient of the sand should not exceed 4, and preferably should not be greater than 3. About one foot above the surface of the sand is to be placed a cover of 2-inch planks which in turn are to be covered with about 10 inches of soil. One discharge from the dosing tank is sufficient to cover a filter about 121⁄2 inches with sewage. Assuming a flow of 1,000 gallons per day, the rate of treatment of the sand filters will be 50,000 gallons per acre per day. The designing engineers state that the effluent from the sand filter is to pass through about 140 feet of 4-inch tile pipe to a point about 200 feet from Lake George and above high-water mark, from which point it will pass over the surface of the ground to the lake. From our careful examination of plans it would appear that they have in general been designed to meet our requirements. There are, however, certain modifications and additions which should be made. I would, therefore, recommend that the plans be approved and that a permit be issued allowing the discharge of the effluent into the waters of Lake George and that the permit contain in addition to the usual revocation and modification clauses the following conditions: 1. That the sewage disposal plant shown by plans approved this day shall be fully constructed in complete conformity with such plans, except as modified by conditions 2, 3, and 4 given below. 2. That the siphon in connection with the flush tank be constructed in a chamber easily accessible in order that repairs may readily be made. 3. That the effluent pipe from the sand filters be extended into the lake so that the end shall at all times be under water. 4. That an inspection chamber be constructed on the final effluent pipe between the sand filters and the lake for the purpose of inspection and collection of samples. 5. That whenever, in the judgment of the State Commissioner of Health, additional or more complete treatment of the effluent is required, additional plans for such additional treatment shall be submitted to this Department for approval and after receiving such approval the additional works shall be constructed. ALBANY, N. Y., September 12, 1917 Respectfully submitted, 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 Mr. Howard W. Starr to discharge effluent from the proposed sewage disposal plant at his residence, near Huletts Landing in the town of Dresden, into the waters of Lake George near his property within the town of Dresden 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 the sewage disposal plant shown by plans approved this day shall be fully constructed in complete conformity with such plans or approved amendments thereof except as stated in conditions 5, 6 and 7 of this permit. 4. That only sanitary or domestic sewage and no storm or surface water from roofs or other areas shall be admitted to the proposed sewers. 5. That the siphon in connection with the flush tank be constructed in a chamber or manhole provided with a removable manhole cover. 6. That the effluent pipe from the sand filter be extended into the lake a sufficient distance so that the outlet shall at all times be completely submerged. 7. That an inspection chamber be constructed on the line of the effluent pipe between the sand filter and the lake. 8. That whenever required by the State Commissioner of Health satisfactory detailed plans for additional works for more complete treatment of the sewage of the residence of Mr. Howard W. Starr shall be submitted for approval; and after the approval of said plans any or all portions of such additional or supplementary works for more complete treatment of sewage shall be constructed and put in operation at such time or times thereafter as said Commissioner may designate. M. NICOLL, JR., Deputy State Commissioner of Health. September 12, 1917 EASTCHESTER (Town Sewer District) Original plans for a comprehensive sewer system for the sewer district in the town of Eastchester covering all portions of the town outside of the incorporated villages of Bronxville and Tuckahoe were approved on November 12, 1912. These plans do not show details of all the sewers and pumping stations and were accordingly approved on the condition that plans for detailed plans for creek crossings and pumping stations be submitted for approval. On August 7, 1916, plans for a pumping station at the intersection of Highland avenue and California road were approved on the following conditions: 1. That the pump shall be provided with automatic control to start and stop the pumps. 2. That properly designed screen chamber shall be provided, so arranged that the sewage shall flow downward through an inclined bar screen and that the plans for such screen chamber shall be submitted to this Department for approval before the screen chamber is constructed. The present plans provide for a screen chamber to be located adjacent to the pumping station. This chamber, which is to be circular in plan, is to be 6 feet in diameter and is to be provided with an inclined bar screen composed of % inch by 12-inch bars spaced 14 inches apart. The screen is to be supported on the bottom of the screen chamber and on the edge of the operating platform which will occupy one-half of the vertical projection of the screen chamber. This screen chamber will also act as a suction wall for the proposed ejector. When the sewage in the screen chamber reaches a certain level it will overflow through an 8-inch pipe into a circular suction well to be operated in connection with the centrifugal pumps at the pumping station. The pumping plant is to be equipped with a Priestman ejector having a capacity of 50 gallons per minute and 2 centrifugal pumps having a capacity of 160 gallons per minute each. The air compressor to be operated in connection with the ejector is to be driven by a 6 horsepower electric motor. One of the centrifugal pumps is to be operated by a similar motor and the other pump is to be operated by a gas engine. This engine can also be made to operate the air compressor. The pumps and ejectors are to be operated automatically by means of floats and switches located in the screen chamber. The general plans for the sewer system approved in 1912 showed 10,000 feet of sewers tributary to this pumping station. Assuming that the lots are 50 feet wide and that each lot will be occupied by a house containing 5 persons on the average, the population tributary to the pumping station will be 2,000, and the estimated maximum rate of sewage contribution will be 275 gallons per minute. The capacity of the pumps at the pumping station will be about 370 gallons per minute. It appears therefore that the plans provide for a reasonable factor of safety. The plans, if properly carried out, should satisfactorily meet the requirements for which the pumping station was designed. ALBANY, N. Y., March 16, 1917. The plans were approved March 22, 1917. HERMANN M. BIGGS, M.D., State Commissioner of Health: I beg to submit the following report on our examination of plans for a proposed intercepting sewer in the sewer district of the town of Eastchester, Westchester county, submitted to this Department for approval by the sewer commissioners of the town on August 17, 1917. Additional plans and data were submitted at our request on September 8 and October 1, 1917, and conferences were held with the engineer for the sewer commission, both at this office and at his office in Mount Vernon. Original plans for a sewer system in the sewer district were approved on November 27, 1912. This district is located on both the Bronx river and the Hutchinson River watersheds. The plans approved provided for the discharge of sewage from the western portion of the district into the Bronx Valley sewer by gravity flow and the discharge of sewage from the northerly portion of the eastern section of the sewer district into five pumping stations by means of which the sewage was to be pumped into the system tributary to the Bronx Valley sewer. These pumping stations were shown located at Highland avenue, Mill road, Water street, Wilmot road and Hutchinson boulevard, not far from the reservoirs of the New Rochelle Water Company. The plans, however, did not show details of these pumping stations nor had it been definitely determined as to whether the sewage from the southern portion of the eastern section of the sewer district was to be pumped to the Bronx Valley sewer through the Bronxville sewer system or discharged by gravity flow through the Mount Vernon sewer system. The plans were, therefore, approved on condition that before the construction of sewers in the eastern section of the Eastchester sewer district more definite and complete plans, including details of ejectors or pumping stations and of cast iron pipe be submitted for approval. On December 3, 1913, plans for proposed sewers in the Paulding Manor section in the southern part of the sewer district were submitted for approval. It appeared from the report of the designing engineer submitted with these plans that the method of finally disposing of the sewage to be collected by these sewers, that is, whether the sewage would be discharged into the Bronx Valley sewer by pumping or into the Mount Vernon sewer system by gravity, had not been definitely determined upon but that approval of the plans was desired at that time in order that the sewers might be installed before the construction of pavements in certain streets of this section. The plans were accordingly approved on December 12, 1913, on condition "that no sewage be discharged into the proposed sewers and that the remaining sewers of the eastern portion of the sewer district in the town of Eastchester be not constructed until more definite and complete plans including details of design of sewers crossing the streams, of outfall sewers, of pumping stations and of force mains shall be submitted to this Department for approval." On November 3, 1915, plans for proposed sewer extension between New Rochelle avenue in the Paulding Manor section in the town of Eastchester and Hutchinson boulevard in the city of Mount Vernon tributary to the sewer system and sewage disposal works of Pelham were approved and a permit issued allowing the discharge of sewage from the proposed sewer into the Hutchinson river through the outlet of the Pelham sewage disposal works. In the early part of 1916 this Department was advised by the New Rochelle Water Company that sewage pumping stations had been constructed by the Eastchester sewer district near the reservoirs of the water company, and that in their opinion the pumping equipment of the pumping stations was inadequate. Attention of the sewer commissioners was immediately called by this Department to the necessity of submitting plans in accordance with the condition of approval of the original and subsequent plans for sewers in the sewer district. Considerable correspondence and a number of conferences were subsequently had with the representatives of the water company and the sewer commissioners. It was found that, although a number of pumping stations had been constructed, only one of the pumping stations serving one house had been put in operation. It was finally agreed at a joint conference between the sewer commissioners of the Eastchester sewer district, representatives of the New Rochelle Water Company and the chief engineer of this Department on June 6, 1917, that the pumping stations in the Eastchester sewer district located near the reservoirs of the New Rochelle Water Company which furnishes the water not only for New Rochelle but also for adjacent municipalities including the town of Eastchester, would be abandoned and intercepting trunk sewers constructed along the reservoirs to convey the sewage by gravity flow to a point below the dam of the lower reservoir in order to better safeguard or protect the water supply furnished by the New Rochelle Water Company. The plans now submitted provide for the interception of the sewage tributary to the pumping station at the intersection of Highland avenue and California road by means of an intercepting trunk sewer extending along the reservoirs and through the property of the New Rochelle Water Company from Highland avenue to the existing sewer in California road below the lower reservoir of the water company. According to the report of the engineer for the sewer commissioners, submitted under date of September 24, it is proposed to construct this section of the intercepting sewer only at this time and to postpone the construction of the sections above Highland avenue for two or three years and detailed plans for the upper sections intercepting sewer from Wilmot road to Highland avenue, for the interception of the sewage tributary to the Wilmot road, Mill road and the Water street pumping stations, are to be submitted at a later date. The sewage to be collected by the proposed intercepting sewer below Highland avenue is to be discharged into the Hutchinson river through existing sewers in the town of Eastchester into the Mount Vernon sewer system and sewage disposal plant. This sewer will ultimately serve the area tributary to the pumping stations on the westerly side of the reservoirs of the New Rochelle Water Company which are to be abandoned. Only one of these pumping stations, the one at Water street, which serves one house, is now |