WQ0037665_Sanitary Sewer Design Calculations_20200715

SANITARY SEWER
DESIGN CALCULATIONS
Us/py91�9%;
SEAL =
034014 —
STOCKBRIDGE AT TANGLEWOOD
ELIZABETH CITY, NORTH CAROLINA
SEPTEMBER 10, 2014
PREPARED FOR:
H S B, LLC
LAND PLANNING SOLUTIONS
5857 HARBOUR VIEW BLVD. STE. 202
SUFFOLK VA. 23435-2657
0 757.935.9014 F 757.935.9015

5857 Harbour View Boulevard, Suite 202
Suffolk, Virginia 23435
0. 757.935.9014 E 757.935.9015
www.landplanningsolutions.com
STOCKBRIDGE AT TANGLEWOOD
Elizabeth City, North Carolina
Phase II - Sanitary Sewer Design
March 18, 2015
SANITARY NARRATIVE
Project Description
Heamdon Stockbridge Builders (HSB), LLC (formerly SAT-DEV, LLC) is developing a 46.98 acres that
is located on the eastern part of the Tanglewood property. The proposed project, Stockbridge at
Tanglewood (SAT) Phase I1 is a 129 lot single-family residential subdivision (R-8 zoned). The SAT site
is currently a farm field with no improvements with phase I partially developed.
The sanitary sewer flows from Phase II of this development will be collected via new 8" gravity mains to
the existing Pump Station developed in phase I located within the development.
Proiected Sanitary Sewer Flows
The ultimate flows used for the design of the SAT pump station are based on the proposed uses in the
development and the Daily Flow For Design values provided in 15A NCAC 2T .0114. See summary
below:
Average Flow Average Daily
Design Flow for Pump Station
Unit
Quantity
per unit (GPD)
Flow (GPD)
Stockbridge Commercial
Acres
40
1,000
40,000
Stockbridge Multi -Family (2 Bdrm)
Units
180
240
43,200
Stockbridge Subdivision (3 Bdrm)
Lots
425
360
153,000
Total
236,200
The initial flows used for the design of the SAT pump station and for the State Sewer Permit are based on
the proposed uses in Phase I as shown below:

Stockbridge at Tanglewood
PHASE I
September 10, 2014
Stockbridge Commercial
Acres
10
1,000
10,000
Stockbridge Multi -Family (2 Bdrm)
Units
0
240
0
Stockbridge Subdivision (3 Bdrm)
Lots
118
360
42,480
Total
52,480
Phase II will add 129 residential lots and increase the flow to the pump station by 32.25 gpm on average.
PHASE II
Stockbridge Subdivision 3 Bdrm Lots 129 360 46,440
Total 46,440