HomeMy WebLinkAbout20220339 120 S. Broadway Site Plan Review General Engineers Narrative General Engineers Narrative
PROPOSED MULTI-FAMILY RESIDENTIAL
DEVELOPMENT
DISTRICT @ 120
120 South Broadway (NYS Route 9)
City of Saratoga Springs
Saratoga County, New York
April 2022
Prepared By:
The Environmental Design Partnership, LLP
900 Route 146
Clifton Park, NY 12065
ENVIRONMENTAL DESIGN
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1.0 Introduction
Strategies, LLC are proposing to develop an approximately 2.64 acre parcel of land with a 58
unit multi-family residential development. The project site is located on the easter side of South
Broadway, north of the intersection with West Fenlon Street, in the City of Saratoga Springs,
New York. The proposed site development includes the construction of a private access road,
townhouse and apartment units, driveways, sidewalks, extension of municipal water and
sewer, and on-site stormwater management.
The project site is currently in the service districts for City of Saratoga Springs Water and Sewer
and therefore is proposing the extension of the City of Saratoga Springs sewer collection system
and water distribution system to serve the proposed project. 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 commercially developed parcel with four existing buildings
and associated driveways and parking areas that will be removed. The existing project site also
contains wooded area in the back which will remain. The topography of the land consists of
drainage towards South Broadway and toward the existing on-site drywells. The typical slopes
range from 1%to 20%. Elevations at the site vary between 323 and 335 feet above sea level.
3.0 Sanitary Sewer
The proposed project will be served by a proposed gravity sewer collection system to be
located onsite that will connect to an existing 10-inch gravity sewer located on the eastern side
of South Broadway.
3.1 Hydraulic Loading
The proposed development will consist of 58 Apartment and Townhouse 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:
2
900 Route 146, Clifton Park, New York 12065
phone(518)371-7621 - fax(518) 371-9540
e-mail: info@edpllp.com
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• Number of Units = 58
• Number of persons per dwelling= 2.03 (2020 Census data for Saratoga Springs, NY)
• Estimated Number of People = 2.03 x 58 = 118 people
• Average Daily Flow = 118 x 100 gal/day/cap = 11,800 gallons per day
• Peaking Factor=4
• Peak Hourly Flow Rate = 33 gpm
3.2 Proposed Sewer Collection System
The proposed sanitary sewer system on-site will consist of approximately 350 linear feet of 6-
inch and 8-inch PVC gravity sewer with two manholes, as well as 10 individual service laterals,
off the existing 10 inch main to serve the Townhouse units. The proposed 8-inch sewer main
will have a minimum pipe slope on the order of 1.0%. which results in a maximum allowable
flow rate on the order of 800 gallons per minute.
The proposed onsite sewer will be offered for dedication to the City of Saratoga Springs upon
completion of construction. All gravity sewers will be designed and constructed in conformance
with the City of Saratoga Spring, Saratoga County Sewer District #1 and the Ten State Standards
—Wastewater.
3.3 Existing Sanitary Sewer
The proposed 8-inch sewer to be located onsite will convey flows to the existing 10-inch sewer
main located along the eastern side of South Broadway. This 10-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 33
gallons per minute which will be less than 10% of the total capacity of the existing sewer main.
The City of Saratoga Springs conveys flows to the Saratoga County Sewer District#1 trunking
system and Wastewater Treatment Plant (WWTP). The theoretical daily discharge from the
proposed project (11,800 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 the extension of an 8-inch water main from the existing
12-inch water main located on the west side of South Broadway, into the project site and
terminating on the north and south property lines with hydrants, stubs, and valves for future
connections.
3
900 Route 146, Clifton Park, New York 12065
phone(518)371-7621 - fax(518) 371-9540
e-mail: info@edpllp.com
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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 11,800 gallons per day.
4.2 Proposed Water Distribution
The City of Saratoga Springs existing water distribution system includes an existing 12-inch
water main located on the west side of South Broadway. The proposed project will include the
extension of an 8-inch water main off the existing 12-inch water main. The proposed 8-inch
water main will extend approximately 140 linear feet into the project site, and tee to extend to
both the northern and southern property lines approximately 380 linear feet. The construction
of the water system will include two hydrants and all the necessary valves, fitting and service
connections.
The proposed water distribution system infrastructure will be constructed in accordance with
the City of Saratoga Springs, NYS Department of Health requirements and the Great Lakes
Upper Mississippi River Board of State Public Health & Environmental Managers publication
"Recommended Standards for Water Works".
4.3 Operating Pressures and Fire Flows
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 proposed grade elevations
between 324 to 325 feet above sea level. Based on these elevations the static pressures on site
should be on the order of 73 psi to 74 psi during normal operating conditions.
Hydrant flow testing water performed by the City of Saratoga Springs on Ballston Ave, north of
West Ave, resulted in an estimated fire flow on the order of 2,560 gpm at 20 psi. This is greater
than the 1,000 gallons per minute requires by the NYS Fire Code fire for townhomes without
sprinkler system.
5.0 Summary
The proposed project will include extension of the City of Saratoga Springs sanitary sewer
collection system and water distribution system in order to serve the proposed development.
Upon completion of construction both the water and sewer mains will be offered for dedication
to the City of Saratoga Springs.
4
900 Route 146, Clifton Park, New York 12065
phone(518)371-7621 - fax(518) 371-9540
e-mail: info@edpllp.com
ENVIRONMENTAL DESIGN
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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
Nicholas Zeglen, P.E.
5
900 Route 146, Clifton Park, New York 12065
phone(518)371-7621 - fax(518) 371-9540
e-mail: info@edpllp.com
ENVIRONMENTAL DESIGN
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Figure 1: Site Location Map
6
900 Route 146, Clifton Park, New York 12065
phone(518)371-7621 - fax(518) 371-9540
e-mail: info@edpllp.com
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Appendix A:
Hydrant Flow Testing
7
900 Route 146, Clifton Park, New York 12065
phone(518)371-7621 - fax(518) 371-9540
e-mail: info@edpllp.com
Hydrant Flow and Chlorine Residual Test Results
Water Distribution System Modeling
Flow Tesr Flow Ra[e Chlorine Stark Pressure ta
No. Residual
t Residual Pressure
Nearest Street Intersection(Flowed) HVD No. (gpmJ :Nearest Street Intersection(Residual) XYD No.Residual Hydrant) (at Residual
Hd.ntl si
1 HATHORN BLVD'.@HUTCHINS RD - 830 '2.20 HATHORN BLVD NORTHOF FERN DELLSPRING OR fit 25
2 TAMARACK TR@HEATHER LN 850 130 TAMARACK TR@RED OAK TR 64 45
S RIP VAN LAN AT-DUTCH ESSCT - 8,10 1.20 RIP VAN LN NORTH OF ST.JUDE CT 55 35.
4 GEYSER RD@CADY HI LL BLVD 608 1050 1.20 GEYSER RD@CASINO DR 509 57 53
5 GRAND AVE @ROUND TABLE RD 584 1120 1.50 GRAND AVE'@KNIGHT WAY 596 61 49
6 KIRBY RD @ ALLEN DR 273 550 0.00 KIRBY RD @ WALTER DR 272 64 52
7 GRAND AVE'@ LEE DR 537 1060 0.90 GRAND AVE @ FREDRICK DR 535 70 51
8 BALLSTON AVE NORTH OF WEST AVE 17 1160 1.00 AVE OF PINE @GOLF COURSE 1B 72 60
'9 ASH Sr@ BIRCH ST 7 1 760 1 0.60 ASH ST@WALNUT ST. 6 71 64
30 DIVISION ST@WALWORTH ST 154 630r
DIVISION ST@W.HARRISON ST 152 G9 61
11 RUSSELL ST @ WATERBURY ST 405 EDVAN DAM ST @ RUSSELL'ST' 444 72 58
12 FIRST ST @ BRYAN ST 199 1180MAPLE AVE @ GREEN ST 322 74 70
13 N.BROADWAY.@:.GREENFIELD AVE 64 700. N.BROADWAY.@FIRSTST 66 60 55
14 BROADWAY NORTH OFfAROLINE ST 57 660BROADWAY@CHUflCH ST 58 78 7015 BROADWAY@:SPRINGST So $60BROADWAY SOUTH OF DIVISION ST 53 .82 78
16 CIRCULAR ST@PARK PL 113 530CIRCULAR ST@UNION AVE 114 78 71
17 SAROADWAY NORTH OF LINCOLN AVE 41 122DS.BROADWAY SOUTH OF CIRCULAR'ST 42 69 '60
18 LINCOLN AVE@ MADISON ST 304 870 . LINCOLN AVE @CLARK ST 303 58 34
19 WRIGHTST@ADAMSST Sol ISO 0.00 WRIG HT ST@MADISON ST 500 65 58
20 CRESCENT AVE - 1150 0.70 CRESCENT AVE EAST OF JEFFERSON ST - 70 53
21 NELSON AVE.NORTH OF CRESCENT ST 351 lose 0.15 NELSON AVE-@.WRIGHT ST 350 63 44.
22 UNION AVE EAST OF LUDLOW ST 435 920 0.70 UNION AVE @LUDLOW ST 435 55 37
23 NOT PERFORMED
24 LAKE AVE @ WARREN Sr 286 1060 0A0 LAKE AVE @ NELSON AVE 282 79 64
25 CAROLINE ST @.FOXHALL.OR 82 1 1090 1 0.70 CAROLINE ST@'SALEM DR al. 70 53
26 FIFTH AVE @ SCHUYLER DR 199 1 260 0.00 FIFTH AVE EAST OF GRANGER AVE 188 40 23
27. CONCORD OR NORTH OF BEMIS H EIGHTS RD 587 1060 0.05 CON CORD DR NORTH OF CHAMPLAIN DR 586 10a 50
28 LAKE AVE @ LEXINGTON RD SD9 1190 1.00 LAKE AVE @ HENNING RD 293 75 52
29 ROBERTS LN@WEDGEWOOD DR 580 3190 1.00 WEDGEWOOD DR'@PINERIDGE L14 579 75 52
30 CRESCENT AVE,next to drive 422 - 1140 0.40 CRESCENT AVE EAST OF POE RD - 91 75
31 ARROWHEAD RD @.SOUTH END - 950 0.00 ARROWHEAD RD @ WHrrESTON LN - 80 46
32 CRESCENT AVE - 780 0.10 CRESCENT AVE SOUTH OF INLANDER RD - 60 33
38 DYER SWITCH.RD SOUTH OF MEADOWBROOK RD - 750 0.00 DYER SWITCH RD. 53 28
34 ON STONE DERCK WEST OF ROLLING ERROR - 740 L.L. STONE BROOK @ROLLING BROOK - 59 26
35 OLD SCHUYLERVILLE-RD NEXTTO NO.261 - 1250 0.80 NEXTHYORANT WESTALONG SCHUYLERVILLE - 94 71
36 TIMBER LN EAST OF BLUEBERRY WAY 820 1 0.40 ITIMBER LN@BLUEBERRY LN 72 44
Note-Hydra tNo,.refle`tthose shown an the wat`rsystem map provdedto Chan,bythe`ity. Fire Flow Calculation(Theoretical @20 psi)
QA= QTXHAIL Where QA is the the flow available with a
HT0'54 residual of 20 psi,QT is the test flow, HA is
the pressure drop available,and HT is the
5.\3\31100-31299\3122)_00\ENG\DOCS\Flow Tests\Hytlran[Tlaw Tests Results.xlsx QA= 1160 x(72-20) pressure drop during the test.
Printed-B/21/2012
(72-60)0.54
QA=2,560 gpm at 20 psi