2. That the chlorinating apparatus be arranged to apply the chlorine to the effluent from the farm house sedimentation tank in an effective manner. 3. That the rate of application of the chlorine be at all times not less than 10.0 parts per million. Respectfully submitted, ALBANY, N. Y., October 30, 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 55% of the Laws of 1911, constituting chapter 45 of the Consolidated Laws, permission is hereby given to Thomas Cochran to discharge effluent from the sewage disposal plants at the Gray Mouse Farm near Kingston into the waters of a small stream tributary to the Hudson river at the point of discharge shown by the plans within the town of Saugerties 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 only sanitary or domestic scwage and no storm water or surface water from roofs or other areas shall be admitted to the disposal plant. 4. That no sewage sludge from any part of the disposal plants shall be discharged into the stream or other body of water. 5. That chlorine shall be at all times properly applied to the effluent from the farm house sedimentation tank at the rate of not less than 10 parts of available chlorine per million parts of sewage effluent. 6. That whenever the flow of sewage to either of the two disposal plants shown by the plans shall exceed that contributed by 25 persons the disposal plants shall be enlarged or additional works for the treatment of the sewage shall be constructed and put in operation under plans satisfactory to this Department. 7. That whenever required by the State Commissioner of Health satisfactory plans for works for a more complete treatment of the sewage from the farm house shall be submitted for approval and after approval of such plans the works provided for shall be installed and put in operation at such time or times as said Commissioner may designate. M. NICOLL, JR., Deputy State Commissioner of Health November 2, 1917 SCOTIA HERMANN M. BIGGS, M.D., State Commissioner of Health: I beg to submit the following report on our examination of plans for a screening plant and outfall sewer for the village of Scotia, Schenectady county, submitted to this Department for approval by the Board of Trustees on June 13, 1917. Original plans for a comprehensive sanitary sewer system for the village and for a pumping station and sewage disposal works consisting of detritus chambers, settling tanks, dosing chamber and intermittent sand filters were approved on May 15, 1905. The pumping station and sewage disposal works were subsequently constructed in general accordance with the approved plans but owing to difficulty experienced in operating the pumping station and the high cost of pumping through a long force main against a static head of some 50 feet the disposal works were not put in operation and permission was granted to the village allowing the temporary discharge of untreated sewage into the Mohawk river near the pumping station just below the Schenectady and Sectia highway bridge. As a result of complaints of the pollution of the Mohawk river by the discharge of sewage from the village of Scotia and sewage and industrial wastes from the city of Schenectady an investigation of the sewerage conditions of the village was made by a representative of this Department on October 25, 1916. This inspection showed that very objectionable conditions were created by the discharge of raw sewage into the Mohawk river at a point about 700 feet above the Schenectady Boat Club which was one of the complainants. As a result of this investigation on order was issued to the village of Scotia on November 5, 1916, requiring that the village put the pumping station, grit chambers and setling tanks forming a portion of the existing disposal works, in operation on or before June 1, 1917. On March 2, 1917, the time for completing the construction of the plant and putting it in operation was extended upon application of the village from June 1 to October 1, 1917. A number of conferences were subsequently held in this office with representatives of the village who claimed that the cost of pumping sewage would amount to from $2,000 to $2,500 a year, and that the village wished to defer for a time the operation of the existing works. In view of this request, and owing to the comparatively small population of the village and the very large dilution afforded by the Mohawk river, the village was advised that consideration would be given to the approval of plans providing for effective screening of the sewage at the present pumping station and for the discharge of the screened sewage into the Mohawk river below the Schenectady Boat Club, since this would abate existing conditions of nuisance in the river and would form a part of the final sewage disposal works. The village of Scotia is situated on the northerly side of the Mohawk river opposite the city of Schenectady in the eastern part of Schenectady county. The population of the village in 1915, according to the last State census, was 3,790 and it was estimated that the present population is about 4,000. The rate of increase of the population of the village has been very rapid. The population has increased from 304 in 1904, when it was incorporated, to about 4,000 in 13 years. The village is provided with a public water supply derived from driven wells and the waterworks are controlled by the municipality. The village is also provided with a comprehensive sanitary sewer system which serves practically the entire population and discharges into the Mohawk river as noted above, through a single outlet near the existing pumping station. According to data submitted by the village engineer the average daily flow of sewage is about 132,000 gallons per day, equal to approximately 30 gallons per capita. This low per capita rate of flow is attributed to the universal metering of the water supply. The Mohawk river at Scotia has a drainage area of about 3320 square miles and is canalized at this point. Although the flood flow of the river near Scotia is as high as 50,000 cubic feet per second, flows as low as 300 cubic feet per second have been recorded for a number of days in succession. The State dam located at Cresent below Schenectady largely controls the elevation of the river so that it fluctuates comparatively little at Scotia during the greater part of the year. The plans now submitted have been designed along comprehensive lines and show that it is proposed to convert the existing pumping station into a screening plant. One of the pump wells of the pumping station which is 10 feet by 12 feet in plan is to be filled with sand to a depth of from 6 to 91⁄2 feet, and is to be so constructed as to provide for the installation of two sets of inclined bar screens. The remaining pump well which is the same size as the other is to be left for future use either for the installation of bar screens or for the installation of fine mesh mechanical screens. One The two proposed inclined bar screens are to be operated in series. of the screens is to be composed of 1⁄2-inch by 2-inch bars, spaced 1 inch center to center. The other is to be composed of 1-inch by 2-inch bars spaced 2 inches center to center. Each screen is to be about 32 feet long by 4 feet wide giving a total screening area of 14 square feet which should be adequate for the present population and at the same time provide for a reasonable increase in population in the future. I am of the opinion, however, that the proposed spacing of the bars of the screen is not suitable to provide for an efficient screening of the sewage. The first screen should have clear openings between the bars of not more than 11⁄2 inches and the second screen should have clear openings between bars of not more than 1⁄2 inch. The bars themselves also appear to be unnecessarily heavy and massive and they would reduce considerably the effective screening area of the screens. It should not be necessary to have the bars more than % inch thick by 2 inches wide. The effluent from the screening plant is to be discharged into deep water of the Mohawk river at a point about 60 feet from shore below the N. Y. C. & H. R. R. bridge some 700 feet below the Schenectady Boat Club. The proposed outfall sewer which is to be about 2,200 feet long is to be 18 inches in diameter and will have a slope of 0.1 per cent. Under ordinary conditions this sewer will have a carrying capacity of about 2,000,000 gallons when flowing full which should be adequate for the present and probable future needs of the village inasmuch as the present sewage flow is only about 132,000 gallons per day according to report of the Village Engineer. The water surface of the river near the outlet is marked 4.2 on the plans which according to the report of the Village Engineer is 1.2 feet higher than the crest of the dam at Cresent below Schenectady and 0.7 feet higher than the normal stage of the river. It would appear, therefore, that the operation of the screen chamber will not be interfered with except during times of high water and that there will be very little if any more back watering of the sewer in Washington avenue than at present during floods in the river. From our careful examination of the plans I am of the opinion that the proposed screen chamber if properly constructed and maintained should satisfactorily meet the local requirements for sewage disposal and that the effluent from the screen chamber may be safely discharged into the Mohawk river below the railroad bridge without objection at this time. The screening chamber will moreover readily lend itself to extensions and modifications and will permit of installing either a duplicate set of bar screens such as provided for by the present plans or for the installation of mechanically operated fine mesh screens. Should additional preliminary treatment of the sewage be required in the future such treatment works could in all probability be constructed near the proposed outlet. A drop of 1 foot has been provided in the outfall sewer at the manhole below the railroad to provide operating head for such works and should it become necessary to pump the sewage in the future for more complete treatment such pumping station could in all probability be most economically located and operated near the proposed outfall sewer so that the works now proposed would form a part of future works when constructed. I would, therefore, recommend that the plans be approved and a permit be issued allowing the discharge of screened sewage from the village of Scotia into the Mohawk river below the N. Y. C. & H. R. R. bridge. I would further recommend that the permit contain in addition to the usual revocation and modification clauses, the following conditions: 1. That the spacing of the bars of the coarse bar screen be not greater than 1 inch in the clear. 2. That the spacing of the bars of the fine bar screen be not greater than 1/2 inch in the clear. 3. That whenever required satisfactory plans for supplementary or more complete treatment of the sewage shall be submitted for approval and that after the approval of such plans any and all portions of such supplementary or more complete treatment works shall be constructed and put in operation at such time or times thereafter as may be stipulated by the State Commissioner of Health. ALBANY, N. Y., June 18, 1917 Respectfully submitted, 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 of Trustees of the village of Scotia to discharge effluent from the works for preliminary treatment of the sewage into the waters of the Mohawk river at the point shown by the plans within the municipality of Scotia in accordance with the plans accompanying the petition, under the following condi tions: 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 sewage disposal works shown by plans approved this day shall be fully constructed in complete conformity with such plans or approved amendments thereof. 4. That only sanitary or domestic sewage and no storm water or surface water from streets, roofs or other areas shall be admitted to the proposed sewers and sewage disposal works. 5. That no sewage sludge or screenings from any part of the disposal works shall be discharged into the Mohawk river or any other watercourse. 6. That the spacing of the bars of the screens shall not be greater than 11⁄2 inches in the clear for the coarse screen, and 1⁄2 inch in the clear for the fine screen. 7. That whenever required by the State Commissioner of Health satisfactory detailed plans for additional works for more complete treatment of the sewage of the village of Scotia shall be submitted for approval; and that after approval of such 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. June 19, 1917 M. NICOLL, JR., Acting Deputy State Commissioner of Health SHERRILL (Oneida Community, Ltd.) HERMANN M. BIGGS, M.D., State Commissioner of Health: I beg to submit the following report on our examination of amended plans for outfall sewers and sewage disposal works for Kenwood and the city of Sherrill, Oneida county, submitted to this Department for approval by Oneida Community, Ltd., on July 20, 1917, Original plans for sewerage and sewage disposal for what were then the unincorporated villages of Kenwood and Sherrill occupied largely by people connected with the Oneida Community, Ltd., were approved on May 31, 1914. Although the sewer system provided for by these plans was constructed the sewage disposal works were not installed and on March 31, 1917, amended plans for outfall sewers and sewage disposal works for this community were submitted for approval. It is found from our examination of these latter plans that although they had in general been designed to meet the local and general requirements for sewage disposal, they were not in satisfactory condition for final approval and were returned to the Oneida Community, Ltd., on April 19, 1917, with the recommendation that they be modified in the following respect: 1. That the sludge capacity of the Imhoff tanks be increased to 300 cubic feet each. 2. That the effluent pipe from the disposal plant be extended to Oneida creek with the outlet submerged at low water stage in the stream. 3. That detailed plans for the proposed contact beds be submitted for approval in connection with the detailed plans for the preliminary treatment works. Reference is made to our report on the examination of the plans referred to dated April 19, 1917, for a description of the sewerage and sewage disposal systems and these systems will not be described in this report. The plans now submitted show they have been revised and modified in general accordance with our recommendations and provide for a disposal plant consisting of a screen chamber, meter, 4 settling tanks of the Imhoff type, 2 sludge drying beds and 2 contact beds divided into 6 units each. The settling tanks have been increased in depth from 22 feet to 27 feet 8 inches, thereby increasing the sludge capacity of each tank from 1,600 to 3,000 cubic feet as recommended. The contact beds are to be filled to an average depth of 4 feet with filtering material composed of gravel ranging in size from 1 to 2 inches. They will have a total combined area of 22 acres and will, therefore, provide for a rate of operation of 400,000 gallons per acre per day, equal to a rate of 100,000 gallons per acre per day per foot of depth of filtering material when serving a population of 10,000 persons assuming a rate of sewage contribution of 100 gallons per capita per day. The effluent from the contact beds is to be discharged through a submerged outlet into Oneida creek. It appears from the plans that before all of the contact can be constructed it will be necessary to change the course of the creek opposite the plant somewhat. The elevation of the bottom of the contact beds is 446.45 and according to the report of the designing engineer the low water elevation of Oneida creek at the point of discharge is 443.6 and 300 feet down stream is 442.7 so that the operation of the contact beds will not be interfered with except during extreme high water. The dosing apparatus which is to be of the type designed by F. A. Barbour of Boston, Mass., is to be located in a compartment in the center of the contact bed area of each bed of 6 units. According to the report submitted with the plans it appears that this dosing apparatus can be arranged to operate any or all units of each contact bed and that the time of contact may be regulated as desired. The capacity of the 12-inch pipes from the settling tanks is somewhat limited and it may be found necessary to replace them with larger pipes before the capacity of the disposal works is exceeded. According to the report of the designing engineer it is planned to construct 3 units of one of the contact beds at first. These three units will care for a population of 2,500 persons on the basis of design used. One settling tank which it is proposed to construct at first also will have sufficient capacity to care for a population of 2,500 so that with the installation of the screen chamber, one Imhoff tank, one sludge drying bed and 3 units of the contact beds as planned a well balanced plant will be obtained which should be adequate to care for a population about 40 per cent in excess of the |