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HomeMy WebLinkAbout20190771 Allendale Supportive Housing Water and Sewer Report Carmina Wood .Morris DPc 487 Main Street Suite 600 Buffalo,New York 14203 P:716.842.3165 F:716.842.0263 W:cwm-ae.com ENGINEER'S REPORT WATER & SANITARY SEWER FOR ALLENDALE SUPPORTIVE HOUSING CD ALLEN DRIVE SARATOGA SPRINGS, NEW YORK GENERAL CD The project consists of demolition of (8) single story, four-unit dwellings and rn related off-street parkingand the new construction of (3) two multi le story, p dwelling unit buildings. The two buildings proposed on the west side of Allen LO Drive will consist of 28 residential units each and the building located to the east side of Allen Drive will have 12 residential units on the second floor and CD incorporate a retail component consistent with local zoning ordinances on the CD ground floor. A total of (68) units will be provided and approximately 12,000 square feet of retail. New off-street parking will be provided per local zoning ordinances. The proposed buildings will be connected to public water and sanitary sewer within Allen Drive. No municipal stormwater conveyance systems exist within adjacent municipal streets, all proposed stormwater will be managed on-site per NYSDEC stormwater regulations. The overall project area is approximately 5.1 r--I acres comprised of approximately 3.79 acres on the west side of Allen Drive zoned UR-4 Urban Residential-4 and approximately 1.27 acres on the east side of Allen pp y �.. Drive zoned Transect Zone T-4 Urban Neighborhood. 0 EXISTING CONDITIONS C.) Sanitary Sewer CD C!) An existing municipal 10" sanitary sewer main runs within Allen Drive and flows LC) south. The existing sanitary services to the buildings to be demolished are proposed to be abandoned per Saratoga Springs regulations. Water Service A 6" municipal water main runs along the west side of the Allen Drive right-of-way. The existing water services to the buildings to be demolished are proposed to be abandoned per Saratoga Springs regulations. Allendale Supportive Housing Allen Drive, Saratoga Springs, NY Page 2 of 4 7/31/2019 PROPOSED FACILITIES Sanitary Serie r A new 6" SDR-35 PVC sanitary lateral @ 1.0% min. will be provided to each new building to collect all new building waste lines. Each new 6" building lateral will connect to the existing municipal 10" sanitary sewer within Allen Drive. Design Parameters: Proposed North Apartment Building: 1 Bedroom Unit: 10 units © 110 gpd per unit = 1,100 gpd 2 Bedroom Unit: 16 units @ 220gpdper unit = 3,520 gpd 3 Bedroom Unit: 2 units © 330 gpd per unit = 660 gpd Average North Building Daily Demand = 5,280 gpd Proposed South Apartment Building: 1 Bedroom Unit: 10 units © 110 gpd per unit = 1,100 gpd 2 Bedroom Unit: 16 units © 220 gpd per unit = 3,520 gpd 3 Bedroom Unit: 2 units © 330 gpd per unit = 660 gpd Average South Building Daily Demand = 5,280 gpd Proposed Mixed Use Building: Office Space: 11,000 sf @ 0.1 gpd per sf = 1,100 gpd 1 Bedroom Unit: 10 units © 110 gpd per unit = 1,100 gpd 2 Bedroom Unit: 16 units © 220 gpd per unit = 3,520 gpd Average Mixed Use Building Daily Demand = 5720 gpd Total Project Average Daily Demand =16,280 gpd Peak Sanitary Demand (4.18 peaking factor) =68,051 gpd The hydraulic loading rate is per "New York State Design Standards for Intermediate Wastewater Treatment Systems" March 5, 2014, NYSDEC. See attached sanitary sewer demand calculations. Water Service A new 2" type "k" copper domestic water service will be provided to each Allendale Supportive Housing Allen Drive, Saratoga Springs, NY Page 3 of 4 7/31/2019 proposed building. Each service will be tapped off the municipal water main located within Allen Drive and continue into a first-floor utility room where a domestic meter and backflow preventor will be installed prior to connection to the building domestic service. A new 4" AWWA C-900 PVC fire service will be provided to each proposed building. Each service will be tapped off the municipal water main located within Allen Drive and continue into a first-floor utility room where a backflow preventor will be installed prior to connection to the building fire sprinkler system designed by others. The proposed utility room will have heat and light provided. Drainage as a result of testing or failure will be provided by gravity to the exterior of the building. The proposed water systems will provide domestic water and fire protection to the buildings. Both the domestic water supply and fire protection/sprinkler system is to be designed by others. Domestic summary: Proposed North Apartment Building: Peak operating Demand: 7.25 gpm Water main: 6" on Allen Drive Static Pressure: 65 psi (est. to be verified by DPW) Friction Loss: 0.08 psi Loss meter & RPZ: 13 psi Elevation Loss: 0.87 psi Pressure after meter & RPZ: 51.05 psi Proposed South Apartment Building: Peak operating Demand: 7.25 gpm Water main: 6" on Allen Drive Static Pressure: 65 psi (est. to be verified by DPW) Friction Loss: 0.04 psi Loss meter & RPZ: 13 psi Elevation Loss: 0.87 psi Pressure after meter & RPZ: 51.09 psi Allendale Supportive Housing Allen Drive, Saratoga Springs, NY Page 4 of 4 7/31/2019 Proposed East Mixed-Use Building: Peak operating Demand: 7.87 gpm Water main: 6" on Allen Drive Static Pressure: 65 psi (est. to be verified by DPW) Friction Loss: 0.08 psi Loss meter & RPZ: 13 psi Elevation Loss: 0.87 psi Pressure after meter & RPZ: 51.05 psi Repairs to all devices will be made during off hours, dual backflow preventors are not required. The proposed building is not located in a 100-year flood plain. Disinfection of the water service following installation will be continuous feed, according to AWWA C-651, latest revision. DOMESTIC WATER & SANITARY DEMAND CALCULATIONS CARMINA WOOD MORRIS, D.P.C. Project No.: 18.085 Date: 7/30/2019 487 MAIN STREET, SUITE 500 Project Name: Allendale Supportive Housing BUFFALO, NEW YORK, 14203 Project Address: Allen Drive, Saratoga Springs, NY (716) 842-3165 Subject: Sanitary Sewage Demand Calcs FAX (716) 842-0263 Sheet: 1 of 1 Sanitary Sewage Deid Calculations: Proposed North Apartment Building: Population: 1 Bedroom Unit: 10 units @ 110 gpd per unit = 1,100 gpd 10 2 Bedroom Unit: 16 units ac 220 gpd per unit = 3,520 gpd 32 3 Bedroom Unit: 2 units © 330 gpd per unit = 660 gpd 6 Average North Building Daily Demand = 5,280 gpd Proposed South Apartment Building: Population: 1 Bedroom Unit: 10 units @ 110 gpd per unit = 1,100 gpd 10 2 Bedroom Unit: 16 units © 220 gpd per unit = 3,520 gpd 32 3 Bedroom Unit: 2 units © 330 gpd per unit = 660 gpd 6 Average South Building Daily Demand = 5,280 gpd Proposed Mixed Use Building: Office Space: 11,000 sf a@ 0.1 gpd per sf = 1,100 gpd 110 1 Bedroom Unit: 10 units @ 110 gpd per unit = 1,100 gpd 10 2 Bedroom Unit: 16 units © 220 gpd per unit = 3,520 gpd 32 1 Average Mixed Use Building Daily Demand = 5,720 gpd Total Average Daily Demand = 16,280 gpd Determine Peak Demand Baseed on Population: Population: 162 ppl Population (P in thousands) 0 16 ppl 18 + P"s, Peaking Factor = - = 4.18 4 + P Total Peak Daily Demand = 68,050 gpd 68,050 gpd x 1 cf/7.48 gal x lday/24hr x 1 hr160min x 1 min/60sec = 0.105 cfs Qpeak CARMINA WOOD MORRIS, D.P.C. Project No.: 18.085 Date: 7/30/2019 487 MAIN STREET, SUITE 500 Project Name: Allendale Supportive Housing BUFFALO, NEW YORK, 14203 Project Address: Allen Dirve, Saratoga Springs, NY (716) 842-3165 Subject: Domestic Water DemandCalcs FAX (716) 842-0263 Sheet: 1 of 1 Water Demand Calculations: Proposed North Apartment Building: { 5,280 gpd x 1.1 = 5,808 gpd *use 110% of sewage demanc *use 1.8 peaking factor and assume a 24 hour day 5,808 gpm x lday/24hr x 1 hr160min = 4.03 gpm 4.03 gpm x 1.8 = 7.25 gpm peak Headlosses: Qpeak = 7.25 gpm Pipe = 2 inch Type "k" copper C = 140 Length = 130 LF (approx. distance from tap to RPZ) 10.44 L Q1'85 10.44(130)(7.26)1.85 - - 1H1 - 1. 4 - 0.19 ft - 0.08 psi: C D (140)1-8- A 1i40) ❑elev = 2 ft = 0.87 psi *RPZ is located in ba utility room approximately 2' above test hydrant Loss through meter = 1 psi Loss through RPZ = 12 psi Total Losses = 13.95 psi Static Pressure = 65 psi *assumed, to be verified by Saratoga Springs DPW Residual Pressure Following RPZ = 65 - 13.95 = 51.05 psi:(available after rpz & meter) Proposed South Apartment Building: 5,280 gpd x 1.1 = 5,808 gpd *use 110% of sewage demanc *use 1.8 peaking factor and assume a 24 hour day 5,808 gpm x lday/24hr x 1 hr/60min = 4.03 gpm 4.03 gpm x 1.8 = 7.25 gpm peak Headlosses: °peek = 7.25 gpm Pipe - 2 inch Type"k" copper C = 140 Length = 60 LF (approx. distance from tap to RPZ) 10.44 L Q�$5 10. 4(60)(7,26)1 95 HL = 0.44 85 4 ass _ 1 8b 4.8+ = 0.09 ft = 0.04 psi C D (1 40 �2} A elev = 2 ft = 0.87 psi *RPZ is located in ba utility room approximately 2' above test hydrant Loss through meter = 1 psi Loss through RPZ = 12 psi Total Losses = 13.91 psi Static Pressure = 65 psi *assumed, to be verified by Saratoga Springs DPW Residual Pressure Following RPZ = 65 - 13.91 = 51.09si(available after rpz & meter)p CARMINA WOOD MORRIS, D.P.C. Project No.: 18.085 Date: 7/30/2019 487 MAIN STREET, SUITE 500 Project Name: Allendale Supportive Housing BUFFALO, NEW YORK, 14203 Project Address: Allen Dirve, Saratoga Springs, NY (716) 842-3165 Subject: Domestic Water DemandCalcs FAX(71 6) 842-0263 Sheet: 1 of 2 Water Demand Calculations: Proposed East Mixed Use Building: 5,720 gpd x 1.1 = 6,202 gpd *use 110% of sewage demanc *use 1.8 peaking factor and assume a 24 hour day 6,202 gpm x lday/24hr x 1 h,r/60min 4.37 gpm 4.37 gpm x 1.8 = 7-87 gpm Qrrea Headlosses ()peak = 7.87 gpm Pipe = 2 inch Type " " copper C = 140 Length = 105 LF (approx. distance from tap to RPZ) 10.44 L Q1-85 10,44(105)(7.87)1 5 • HL _ 1.1 4,856 = .a - = 0.18 ft 0,08 psi C D (140)1.852 elev = 2 ft = 0.87 psi *IRI3Z is located in ba utility room approximately 2'above test hydrant Loss tb ro u g h meter = 1 psi Loss through RPZ = 12 psi Total Losses = 13.95 psi Static Pressure = 65 psi *assumed, to be verified by Saratoga Springs DPW Residual Pressure Following RPZ = 65 - 13.05 = 51.05 psi (available after rpz meter)