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Home My WebLink About20200205 Kaydeross Ave East Conservation Sub Engineers Report � The LA GROUP La�idscape ArchitecturehYEnqineerinq P.C_ Pe�/c.Pnrpnlr.P/a.:. ��1 C_.(111() ��f_'.ti� `_�?�I��i(OC�d S�]I IIlgS 4VY 12�66 r 51� '�87 ;�()47 �:_�,,�t_ ,_,'_n�Q,, Engineering Report Water and Sanitary Sewer For KAYDEROSS AVENUE EAST CONSERVATION SUBDIVISION 227 KAYDEROSS AVENUE EAST SARATOGA SPRINGS, NEW YORK Planning Board #17.006.1 Prepared For: 227 Kaydeross Ave. Inc. 43 Edgewater Drive Dunedin, FL 34698 Prepared By: The LA Group, P.C. 40 Long Alley Saratoga Springs, New York 12866 ��pF NEi�y� c��S � '�`��'A,� �r o � �� * � � ( '� cc C� ',��f� � tt► ` - � Z � 2��0 p91�39 ��C� v R�FES S1��'P Apri18, 2020 L Pro_ject Description The Kaydeross Avenue Conservation Subdivision project consists of the subdivision of an existing lot into 15 individual lots. One of the lots has an existing residence that will remain (lot 1). A conservation easement is also planned as part of the project. Each of the 14 remaining lots is planned to have a four bedroom residence and driveway. A new road that will be accessed off of Kaydeross Avenue East is proposed as part of the proj ect to access 13 of the new lots. The existing residence's frontage is on the west side of Kaydeross Avenue East but will access the new road. One new residence (lot 15)will also have frontage on the east side Kaydeross Avenue East. II. Existin�Water and Sanitary Sewer Utilities The existing residence located on one of the proposed lots currently has water and sanitary services. For the purposes of this report, the remaining 14 lots will be considered for proj ected calculations since conditions are not changing at the existing residence. Municipal water service is available from the City of Saratoga Springs via an existing 8-inch diameter water main located on Kaydeross Avenue East. Municipal sanitary sewer service is not available, so the new 14 residences will have new septic systems designed in accordance with local lot conditions. III. Proiected Water and Wastewater Flows The table below provides information on the anticipated water demand for the proj ect: Description Use Rate No.of Total Use bedrooms/residence (14) 4-bedroom residences 110 gpd/bedroom� 4 6,160 gpd Total 6,160 gpd Average daily demand for water is estimated to be approximately 4.3 gpm. Instantaneous peak demand is estimated at 3.0 gpm�for each residence giving a total instantaneous demand of 42 gpm. IV. Soil Investi�ations Soil investigations including deep test pits were completed by the LA Group and wimessed by NYSDOH on 1/9/2020. Percolation tests were conducted at that time. The results of the soil investigations are shown on drawing L-6.1. Due to existing soil conditions on site, mound systems are appropriate for all lots. V. Proposed Water and Wastewater Utilities Proposed Water Utilities To service the project an 8" DIP water main is proposed to along the new road that will be installed as part of the proj ect. A 3/4" copper water service is proposed to connect from the frontage of each new residence to the new 8" DIP water main in the road. The proposed subdivision configuration will require 14 total water service connections. Connections and appurtenances, including corporation stops, trenching, bedding, service connections, as well as testing and disinfection will all be specified in accordance with City of Saratoga Springs and NYSDOH standards. On-Site Wastewater Disposal System Design Wastewater flows were estimated using methodology prescribed by the New York State Department of Health (NYSDOH) Residential Onsite Wastewater Treatment System design handbook Since the lots are considered residential, flow was estimated using the approximation of 110 gpd per bedroom. Proposed home sizes based on input from the developer are four(4)bedrooms. Homes with more than four(4)bedrooms will need to be designed based on the standard sizes given by NYSDOH in Appendix 75-A of the standards. A range of bedroom counts and design percolation rates is provided on the plans for sizing the absorption trenches. The wastewater facilities for each home will consist of gra�ity piping from the house to a septic tank, and then an effluent pump chamber with pump controls. Force main piping will distribute flows to absorption trenches. Topography and soil boundary conditions on all lots appear to allow for a mound systems. Layout, details and setback requirements for the septic systems are shown on the Drawings L-6.0, 6.1, 6.2 and L-8.4, 8.5. The minimum required septic tank size for a four-bedroom residence is 1,200 gallons. Therefore, a new 1,200 gallon septic tank is proposed. Notes 1. From Table 1, Appendix 75-A Wastewater Treatment Standards-Residential Onsite Systems (110 gallons per day per bedroom) 2. From Tables XIV Communitv Water Systems Source Book, Ameen (3.0 gpm/residence)