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West Seneca Sewer Report | Page 9 Standards and Specifications for Erosion and Sediment Control has been prepared for this project. The SWPPP is included in the Site Plan Application Package. Section 5 – Proposed Water Facilities 5.1 Proposed Water Connections The project is proposing a new water connection to the Eire County Water Authority (EWCA) 12” water main on the north side of Clinton Street. 5.2 Existing Flow Test Data Existing hydrant flow test data was provided for hydrant J11F55 and completed on 7/15/2019. The existing water line is a 6” cast iron pipe on the south side of Clinton Street. The residual pressure was 54 psi at 872 gpm. 5.3 Proposed Water Demand The anticipated average daily water demand from the proposed development was calculated using Table B-3 of the NYSDEC Design Standards for Intermediate Sized Wastewater Treatment Systems, dated March 5, 2014. For apartments constructed after 1994, the average daily water demand per bedroom is 110-gallons per day. The proposed project includes updating all water fixtures to modern energy efficient fixtures. Based on this, the anticipated average daily water demand for the proposed development is as follows: Table 7: Anticipated Water Demand Average Daily Demand No. of Bedrooms No. of Units Water Demand Per Unit (GPD) (GPD) 1 Bedroom 24 110 2,640 2 Bedroom 29 220 6,380 3 Bedroom 22 330 7,260 Total Average Daily Demand 16,340 Maximum Day (2x Average Daily) 32,680 Peak Hourly (4x Average Daily) 35,360 5.4 Proposed Fire Protection and Backflow The project is proposing one combined service from Clinton Street, which will split into combined services feeding the existing mansion and new building respectively. New backflow prevention devices are proposed for each of the buildings, splitting into separate domestic and fire services after the backflows. The domestic services will be metered within each building. The private hydrants on site will be fed after the backflow within each building. Refer to the MEP and FP plans for detailed design. Page 81 of 359