HomeMy WebLinkAbout20181047 18.056 62-64 Excelsior_Engineers ReportThe LA GROUP
Landscape Architecture & Engineering P.C.
People. Purpose. Place.
Engineering Report
Water and Sanitary Sewer
For
62-64 Excelsior Avenue
62-64 Excelsior Avenue
SARATOGA SPRINGS, NEW YORK
Planning Board #18.XXX
Prepared For:
RR Depot LLC
18 Division Street
Suite 401
Saratoga Springs, NY 12866
Prepared By:
The LA Group, P.C.
40 Long Alley
Saratoga Springs, New York 12866
November 21, 2018
40 Long Alley
Saratoga Springs
NY 12866
p; 518-587-8100
f 518-587-0180
www.thelagroup.corn
I. Project Description
The 62-64 Excelsior Avenue project is located 250 feet south of the intersection of East Avenue
and Excelsior Avenue and consists of a proposed renovation of an existing autobody repair shop
and on-site pavement improvements. As a part of the work, the autobody repair shop will be
renovated to operate as a restaurant with 40 seats. The southwest side of the existing building
will remain as an auto part store with 2 employees.
II. Existing Water and Sanitary Sewer Utilities
The existing building currently has a sanitary lateral that connects to a 20" main on Excelsior
Avenue, which is owned by the Saratoga County Sewer District No. 1 (SCSD). This main runs
northeast -southwest along Excelsior Avenue.
The existing building currently has water service from the City of Saratoga Springs, which enters
the west side of the building off Excelsior Avenue. This existing water service is planned to be
turned off at the corporation stop and cut.
A hydrant flow test was conducted on April 24, 2013 at the intersection of Marion Avenue and
Excelsior Avenue. The flow test indicated static pressures of 102 psi and a residual pressure of
98 psi with the hydrant flowing at 1,570 gallons per minute. The theoretical available fire flow at
20 psi is 8,021 gallons per minute. See Attachment A for hydrant flow test information.
III. Projected Water and Wastewater Flows
The table below provides information on the anticipated wastewater flow rates for the project:
Description Use Rate
Restaurant (40 seats) 35 gpd/seatl
Store (2 Staff) 15 gpd/employeel
Total
Total Use
1,400 gpd
30 end
1,430 gpd
Average daily flow for wastewater is estimated to be 3.0 gallons per minute (gpm) based on an
8 -hour day. Estimated peak hourly flow is 12.6 gpm (4.2 x average).2
Average daily demand for water is estimated to be approximately equal to the wastewater flow
or 3.0 gpm. Instantaneous peak demand is estimated at 42 gpm3.
For the purposes of input into the City of Saratoga Springs water model, we offer the following
estimated water demands for the project:
• Average Day Demand is 3.0 gallons per minute (GPM) over the 8 -hour period.
• Max Day Demand is 6.0 gallon per minute (GPM) based on twice the average.
• Peak Hourly Demand is 12.6 gallons per minute (GPM) based on 4.2 times the average.
• Fire Flow Demand is 1,000 gallons per minute (GPM) per ISO guidelines.
IV. Proposed Water and Wastewater Utilities
Proposed Water Utilities
To service the project a 4 -inch lateral is proposed to provide water service from the 20" main on
Excelsior Avenue via a wet tap. It is anticipated that the renovated portion of the existing
building will have fire protection via a fire sprinkler system. The outside shut-off valve will be
on Excelsior Avenue.
The nearest fire hydrant is located on the west side of Excelsior Avenue approximately 240 feet
southwest of the project site.
For a building protected by an automatic fire sprinkler system, the ISO states:
"The NFF for commercial occupancies protected by an automatic fire sprinkler system
installed in accordance with the general criteria of NFPA 13R, Standard for the
Installation of Sprinkler Systems, is the demand at the base of the automatic sprinkler
riser" and inside/outside hose stream.
Using the formula given by ISO, the NFF for this facility is 1,000 gpm.
Connections and appurtenances, including mechanical joints, gate valves, thrust blocks,
trenching, bedding, service connections, as well as testing and disinfection will all be specified in
accordance with City of Saratoga Springs and AWWA standards.
Proposed Wastewater Utilities
The existing sanitary lateral is planned to be protected and remain in place to service the building.
There will be a 50 gpm interior grease trap inside the restaurant space.
Notes
1. From Table B-3 NYSDEC Design Standards for Intermediate Sized Wastewater Treatment Systems.
2. From Figure 1, GLUMRB Recommended Standards for Wastewater Facilities
Q = (18 + P %) ± (4 + P 1/2) where P = population in thousands
3. From the NYS Plumbing Code, Appendix E based on Water Supply Fixture Units.
Attachment A
Hydrant Flow Test
710,te4 Erta jrine Plotecreog swe0“1
P.O. BOX 508 BURNT HILLS, N.Y. 12027 (518) 885-1115 FAX (518) 885-0526
HYEr ANT FLOW TEST REPORT
LOCATION: Ma n � , ✓ (�, X cc.:(_ 3 r 0 h ✓1 )
TESTBY: FK) ti -" z.
L ,.1 .-1 l l' i?,;v Fi'\ i''
c, "s7 ni i.y y OF. J
TIME: �!
DATE:
j
TARGET HYD. LOCATION (B) a el e4 r% b k
TEST RESULTS : STATIC PRESSURE (G) / b PSI
RESIDUAL PRESSURE (B) 98 PSI WITH l5 7 0 (A) GPRII FLOWN.RESP,r„UAL PRESSURE (B) PSI WITH (A) wrV 'LOV,:gLN r
FLOW HYD. LOCATION (A)
1) PORT FLOWED (A) I DIAMETER a 'Z.,
2) PORT FLOWED (A) DIAMETER
3) PORT FLOWED (A) DIAMETER
1) PITOT or FLOW METER READING (A) 7 PSI AT / .S 7 d GPM
2) PITOT or FLOW METER READING (A) PSI AT GPM
3) RIOT or FLOW METER READING (A) PSI AT GPM
OUTLET COEFFICIENT USED
(smooth 0.90) (square & sharp 0.88) (projecting into barrel 0.77)
esti
r �a Li
I 5 70( — 80
ESTIMATED FLOW AT 20 PSI ?,9 d' I GPM
LOCATION SKETCH ATTACHED ? YES >( NO
TEST DATA
Ileark S44€ fit e Psorectte i Syatr xa, 9K&.
P.O. Box 508 BURNT HILLS, N.Y. 12027 (518)885-1115 FAX (518) 885-0526
(61 .SE1) r /C'S
11rd 4-) -t-l3 is pin .
TYPE OF TEST
(HYDRANT,
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POWs)
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'DISCHARGE
PRES RE
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OS C
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PUMP
SPEED
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PITOT
PRES.
NO. OF
FLOW
OPENINGS
DIA.
OF
FLOW
OPENING
(IN.)
FLOW
AT
C =.90
C =.97.
(GPM)
OPENING
COEFFICIENT
C =
ACTUAL
FLOW
(GPM)
(PSI)
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7l4/e4 Sade '?(;r.e. Ptotedicut Spreopz, 9,rz. N1.85 GRAPH
P.0 SOX 503 BURNT HILLS. NY. 12027 (519) 885-1 115
CONTRACT NO. SHEET NO OF
NAME: /7/A .11t/(L. SYSTEM NO
ADDRESS: 5' a .0,4 --To,),J 717"
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