HomeMy WebLinkAbout20250587 63 Henning Rd Site Plan Engineering ReportEngineering Report
Septic System
For
SARATOGA EQUINE HOSPITAL
EXPANSION
63 Henning Road
Saratoga Springs, New York
Prepared For:
Rood & Riddle Real Estate, LLC
2150 Georgetown Road
Lexington, KY 40511
Prepared By:
The LA Group, P.C.
40 Long Alley
Saratoga Springs, New York 12866
June 20, 2025
1
I. Introduction
This report addresses the proposed on-site wastewater disposal system at the Saratoga Equine
Hospital (the project). The project is located at 63 Henning Road in the City of Saratoga Springs,
New York approximately one quarter mile north of Union Avenue (NYS Route 9P). Municipal
water and wastewater services are not presently available in the immediate vicinity of the
project.
The existing facilities total approximately 27,000 square feet and are used for equine medical
and surgical purposes. The Applicant proposes to expand the facilities to provide for an
approximately 8,400 square foot building. The building will include stables, office space, and
isolation stalls. The expansion will involve the demolition of an approximately 4500 square foot
existing stables building.
II. Existing Water and Sanitary Sewer Utilities
The project water supply is from two on-site wells. There have been no reported problems with
either the quality or quantity of the existing water supply. No modifications to the existing water
supply system are proposed for this project. Additionally, the project will not result in an
increase in water demand.
The existing on-site wastewater disposal system reportedly consists of a septic tank, a
distribution box and a disposal field that serves the existing stables. There is also a system that
services the southern buildings consisting of two septic tanks, one distribution box, an effluent
pump, and a two-section absorption field that separately treats domestic wastewater and
wastewater from wash down area drains. The systems have been functioning properly according
to the maintenance staff.
III. Estimated Wastewater Flows
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Wastewater flows are estimated by comparing standard flow rates and actual water meter use
data for a similar facility in Kentucky. Since the actual measured use is higher than the standard
rates, the actual measured use rate from a similar facility will be used for this design.
Water meter readings from the period April 18, 2013 to October 22, 2013 at an existing similar
facility operated by the Owner indicate an average daily water use of approximately 1,000
gallons (See Attachment A). This is based on total water used and considers a 6 day work week.
The existing similar facility has a floor area of 17,279 square feet. Dividing the average daily use
by the floor area gives 0.058 gallons per day per square foot (GPD/SF). For design purposes we
will use 0.06 GPD/SF.
The isolation stables included in the project will result in a total occupied floor area of
approximately 950 SF. Multiplying by 0.06 GPD/SF gives a total daily use of approximately 57
gallons (GPD). The space occupied by office and stable space in the project has the same amount
of stable space and office workers as the existing building. The existing building also houses a
two-bedroom apartment, which will be demolished. Therefore, the flow from the new office
space and stables will be less than the flow from the existing building, and suitable for the
existing septic tank size of 1000 gallons. Considering this, flow from the new stables and office
space can be directed to the existing septic system. As a horse safety measure, flow from
isolation stalls, which may include bacteria or diseases that pose a danger to other horses, will be
treated by a new septic system.
Refer to Attachment A for the water use data and complete analysis.
IV. On-Site Wastewater Disposal System Design
Domestic wastewater will be disposed of in a conventional absorption trench septic system.
Deep-hole test pits and soil percolation tests were conducted on May 21, 2025. The results of
these tests are included on the design plans.
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The minimum required septic tank size for this flow is 86 gallons. The minimum allowed by
NYSDOH standards is 1,000 gallons. A new 1,000 gallon two-compartment septic tank is
proposed. The system will be gravity fed, with separate inverts from each floor drain in the four
isolation stalls.
ATTACHMENT A
Saratoga Equine Hospital
63 Henning Road
Rood & Riddle Equine Hospital
Lexington, Kentucky
Water Use Records (meter):
Building Account # From To Usage1
(Gallons)
No. of
Days
Avg.
Use
(GPD)
2" Meter 12-0426550 12/19/12 1/21/13 3,000 33 91
1/21/13 2/19/13 3,750 29 129
2/19/13 3/20/13 3,000 29 103
3/20/13 4/18/13 10,500 29 362
4/18/13 5/23/13 29,172 35 833
5/23/13 6/20/13 21,692 28 775
6/20/13 7/24/13 27,676 34 814
7/24/13 8/22/13 23,188 29 800
8/22/13 9/23/13 25,432 32 795
9/23/13 10/22/13 21,692 29 748
10/22/13 11/19/13 17,204 28 614
11/19/13 12/19/13 2,992 30 100
365
AVERAGE FOR 6 HIGHEST MONTHS =794
1. Usage data provided by Rood & Riddle
GH AVERAGE DAILY USE =794 GPD (6 HIGHEST MONTHS)
TOTAL DAILY USE =926 GPD (BASED ON 6 DAYS/WEEK)
ROUND UP TO 1,000 GPD
AVG. DAILY FLOW, Qav =2.1 GPM (BASED ON 8 HRS.)
PEAK HOURLY FLOW, Qp =8.3 GPM (4.0 x AVG)
0.02 CFS (448.831 GPM/CFS)
USE PER SQUARE FOOT:0.058 GPD/SF (BASED ON 17,279 SF)
2. Square footage data provided by Rood & Riddle
1 Attachment A
SEPTIC SYSTEM
BASIS OF DESIGN
Saratoga Equine Hospital
63 Henning Road
ESTIMATE MAXIMUM DAILY FLOW:
OCCUPIED SPACE:
FLOOR AREA 950 SF
DESIGN FLOW =0.06 GPD/SF (FROM SIMILAR FACILITY)
-------
Q =57 GPD (TOTAL FLOW)
ESTIMATE DAILY FLOW TO SEPTIC TANK:
Qb =57 GPD
SEPTIC TANK SIZING:
SEPTIC TANK (MIN):86 GALLONS (1.5 Q)
DESIGN: USE A 1,000 GALLON PRE-CAST SEPTIC TANK
2 Attachment A
SEPTIC SYSTEM
BASIS OF DESIGN
Saratoga Equine Hospital
63 Henning Road
POST DEVELOPMENT FLOW TO EXISTING SEPTIC TANK
ESTIMATE MAXIMUM DAILY FLOW:
OCCUPIED SPACE:
FLOOR AREA 1,624 SF
DESIGN FLOW =0.06 GPD/SF (FROM SIMILAR FACILITY)
-------
Q =98 GPD (TOTAL FLOW)
OFFICE SPACE
FLOOR AREA 15 EMPLOYEES
DESIGN FLOW =15 GPD/EMPLOYEE
-------
Q =225 GPD (TOTAL FLOW)
APARTMENT SPACE:
# BEDROOMS 2
DESIGN FLOW= 110 GPD/BEDROOM
--------
Q =220 GPD
ESTIMATE DAILY FLOW TO SEPTIC TANK:
Qb =543 GPD
SEPTIC TANK SIZING:
SEPTIC TANK (MIN):815 GALLONS (1.5 Q)
DESIGN: USE A 1,000 GALLON PRE-CAST SEPTIC TANK
3 Attachment A
SEPTIC SYSTEM
BASIS OF DESIGN
Saratoga Equine Hospital
63 Henning Road
EXISTING FLOW TO EXISTING SEPTIC
ESTIMATE MAXIMUM DAILY FLOW:
OCCUPIED SPACE:
FLOOR AREA 1,624 SF
DESIGN FLOW =0.06 GPD/SF (FROM SIMILAR FACILITY)
-------
Q =98 GPD (TOTAL FLOW)
OFFICE SPACE
FLOOR AREA 15 EMPLOYEES
DESIGN FLOW =15 GPD/EMPLOYEE
-------
Q =225 GPD (TOTAL FLOW)
APARTMENT SPACE:
# BEDROOMS 0
DESIGN FLOW= 110 GPD/BEDROOM
--------
Q =0 GPD
ESTIMATE DAILY FLOW TO SEPTIC TANK:
Qb =323 GPD
SEPTIC TANK SIZING:
SEPTIC TANK (MIN):485 GALLONS (1.5 Q)
DESIGN: USE A 1,000 GALLON PRE-CAST SEPTIC TANK
4 Attachment A