HomeMy WebLinkAbout20220011 143 W. Circular Subdivision Narrative General Engineers Narrative
SUBDIVISION OF LANDS OF
WILLARD F. CHAMBERLIN, JR
143 West Circular Street
City of Saratoga Springs
Saratoga County, New York
December 2021
Prepared By:
The Environmental Design Partnership, LLP
900 Route 146
Clifton Park, NY 12065
ENVIRONMENTAL QESIGN
PARTNERSHIP, LLP.
ENVIRONMENTAL DESIGN
PARTNERSHIP, LLP.
1.0 Introduction
Habitat for Humanity is proposing to subdivide an approximately 0.32 acre parcel of land into
two single family residential lots. Lot 1 will contain the existing dwelling and Lot 2 will be
developed with a new single-family dwelling. The project site is located within the northeastern
quadrant of the intersection of West Circular Street and Walnut Street in the City of Saratoga
Springs, New York. The proposed site development includes the construction of a one single
family dwelling with driveway.
The project site is currently in the service districts for City of Saratoga Springs Water and Sewer
and therefore is proposing the service connections from the City of Saratoga Springs sewer
collection system and water distribution system to serve the proposed dwelling on lot 2. The
dwelling on lot 1 is currently connected to the municipal water and sewer. This narrative
presents a review of the design concepts and parameters of the sanitary sewer collection
system and the water distribution system for the proposed development.
2.0 Existing Conditions
The existing project site consist of a single parcel containing a single-family dwelling and
accessory building. The existing project site also contains lawn areas with some brush and trees.
The topography of the land is generally flat.
3.0 Sanitary Sewer
The proposed project will be served by individual sewer services connecting to the existing
gravity sewer main located along West Circular Street. Lot#1 has an existing connection that
will remain while the sewer lateral for Lot#2 will run from the existing sanitary sewer main
located in the street to the proposed dwelling on Lot#2.
3.1 Hydraulic Loading
The proposed development will consist of 1 new Single Family dwelling units. Based on the
Upper Mississippi River Board of State Public Health & Environmental Managers publication
"Recommended Standards for Wastewater Facilities" (Ten State Standards — Wastewater) the
hydraulic loading rate of 100 gallons per day per capita was used to calculated the estimated
wastewater loading from the project site. The wastewater loading rate for the project was
calculated as follows:
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900 Route 146, Clifton Park, New York 12065
phone(518)371-7621 - fax(518) 371-9540
e-mail: info@edpllp.com
ENVIRONMENTAL DESIGN
PARTNERSHIP, LLP.
� Number of Units = 1
� Number of persons per dwelling= 2.13 (2010 Census data for Saratoga Springs, NY)
• Estimated Number of People = 2.13 x 1 = 3 people
• Average Daily Flow = 3 x 100 gal/day/cap = 300 gallons per day
• Peaking Factor=4
• Peak Hourly Flow Rate = 1 gpm
3.2 Existing Sanitary Sewer
The proposed 6-inch PVC sewer service will convey flows to the existing 8-inch sewer main
located along West Circular Street. This 8-inch gravity main is currently owned and maintained
by the City of Saratoga Springs and has a capacity of greater than 400 gallons per minute. The
proposed peak hourly discharge from the site will be on the order of 1 gallons per minute which
will be less than 0.5% of the total capacity of the existing sewer main.
The City of Saratoga Springs conveys flows to the Saratoga County Sewer District#1 truncking
system and Wastewater Treatment Plant (WWTP). The theoretical daily discharge from the
proposed project (500 gallons per day) is well within the Saratoga County Sewer District #1's
trunking and treatment capacity.
4.0 Water
The proposed project will be served by individual water services extending from the existing
water mains located on West Circular Street. Lot#1 has an existing connection which will
remain. Lot#2 will be served by a new service connection to the water main along West
Circular Street
4.1 Water Consumption
It is anticipated that the water consumption for the proposed project site will be relatively
equivalent to the hydraulic loading rate for the sanitary sewer. Per Section 3.1 of this report the
theoretical water consumption for the project is on the order of 300 gallons per day.
4.2 Operating Pressures
The hydraulic grade line of the City of Saratoga Springs water distribution system is on the
order of 495 feet above sea level. The proposed project site has ground elevations on the order
of 310 feet above sea level. Based on these elevations the static pressures on site should be on
the order of 80 psi during normal operating conditions.
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900 Route 146, Clifton Park, New York 12065
phone(518)371-7621 - fax(518) 371-9540
e-mail: info@edpllp.com
ENVIRONMENTAL DESIGN
PARTNERSHIP, LLP.
5.0 Summary
The proposed project will include service connections to the existing City of Saratoga Springs
sanitary sewer collection system and water distribution system in order to serve the proposed
development.
Both the City of Saratoga Springs water system and sewer system have the capacity to serve the
proposed project.
Prepared by:
The Environmental Design Partnership, LLP
Brandon M. Ferguson, P.E.
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900 Route 146, Clifton Park, New York 12065
phone(518)371-7621 - fax(518) 371-9540
e-mail: info@edpllp.com