HomeMy WebLinkAboutSanitary SewerSanitary Sewer Report
for
Tower Point Infrastructure Development
Phase 12, Lots 1-3, Block 2
College Station, Texas
Prepared for;
Weiner Development Corporation
Prepared by:
Walter P. Moore & Associates, Inc.
1301 McKinney, Suite 1100
Houston, TX 77010
TBPE Firm Registration No. 1856
March 21, 2011
Revised April 27, 2011
OF
Walter P. Moore and Associates.IlN
TBPE Firm Registration No.1W
f
TABLE OF CONTENTS
SANITARY SEWER OVERVIEW........
PROJECT DESCRIPTION .................
SANITARY SEWER ANALYSIS.........
CONCLUSION.. ...............................
APPENDIX ........................................
................................................................................. 2
................................................................................. 2
........................................................... I ................... 3
............................................................................... 4
............................................................................... 5
SANITARY SEWER OVERVIEW
Introduction
The sanitary sewer line is to serve Tower Point Subdivision Phase 12, Lots 1-3, Block 2 located
in College Station Texas.
The sanitary sewer has been prepared in general conformance with the requirements of
College Station and TxDOT.
The purpose of the report is to verify adequate capacity of the proposed sanitary sewer line for
the drainage area discharging into the system for the restaurant and commercial development.
This sanitary sewer analysis consists of this narrative plan, the accompanying exhibits included
in the appendices.
PROJECT DESCRIPTION
Location and Outfall Information
The site is located is at approximately Latitude 30' 33' 48" N and Longitude 96' 15' 57" W
determined using the USGS map. The site is located in the Wellborn SE Quadrangle Brazos
County, Texas. The site slopes from north to south of the property.
Existing Conditions
The site of the project is located approximately 2900 feet from the northwest corner of the
intersection of Highway 6 and Highway 40 in College Station, Texas. The site is bounded by
Arrington Road to the north, Highway 6 to the east, and the detention Area of Phase 14, Lot 4,
Block 2 on the west and south.
The project size is approximately 5.44 acres in size and is currently not developed. The site
consists of primarily rocky soil with minimal vegetation.
Sanitary Sewer Report
Tower Point Infrastructure Development— Phase 12, Lots 1-3, Block 2 Page 2
Proposed Site Conditions
Proposed development consists of a restaurant and commercial retail shops with associated
parking, drives, sidewalk, and landscaping. The public infrastructure being constructed
consists of new private roadways, public water mains, public storm sewer systems, and public
sanitary sewer systems. The public sanitary sewer will be connected to an existing manhole
on an existing 27" sanitary sewer within a 20' wide easement located north of Arrington Road.
The new sanitary sewer extension will extend south across Arrington Road to serve future
development on lots 1, 2, and 3 (See Exhibit 1).
SANITARY SEWER ANALYSIS
Existing Analysis
The existing sanitary manhole north of Arrington Road and approximately 380' west of Highway
6 will be the point of connection and will be collecting Lots 1, 2, and 3, which is approximately
5.44 acres of commercial development (See Exhibit 2). The existing 27" sanitary sewer system
north of Arrington Road has a maximum peak hourly flow of 1.10x10A7gpd or 16.96cfs and
slopes to the east towards Highway 6.
Proposed Analysis
The proposed sanitary sewer velocity and capacity calculations are shown in the appendix.
The proposed sanitary sewer drainage area discharging to the existing system is analyzed
below:
To existing 27" sanitary sewer
A=5.44 acres; Restaurant=6000 sf
Capita-30 persons/acre
Retail-25gpd/cap
Restaurant=600gpd/1000 sf
Design (8" PVC) _> 0 Av.ra9e Daly how = 4,080gpd + 3,600gpd = 7,680gpd
Sanitary Sewer Report
Tower Point Infrastructure Development— Phase 12, Lots 1-3, Block 2 Page 3
Q Peak Hourly Flow — (Q Average Daily Flow )(4)
Q Peak Hoary Flow = 30,720gpd or 0.0475cfs
CONCLUSION
The existing 27" sanitary sewer system has adequate capacity to handle the new sanitary
sewer flows discharging to the existing system at the existing sanitary manhole connection
point located north of Arrington Road and approximately 380' west of Highway 6. In addition,
the sanitary sewer extension has adequate capacity to handle Lots 1, 2, and 3, which is
approximately 5.44 acres of commercial development.
Sanitary Sewer Report
Tower Point Infrastructure Development— Phase 12, Lots 1-3, Block 2 Page 4
APPENDIX
Exhibit 1........................................................................................ Sanitary Sewer Layout
Exhibit 2............................................................ Proposed Sanitary Sewer Drainage Area
Exhibit 3......... Tower Point Phase 12, Lots 1-3, Block 2 Sanitary Sewer Design Calculations
Sanitary Sewer Report
Tower Point Infrastructure Development— Phase 12, Lots 1-3, Block 2 Page 5
EXHIBIT 1
I I I i
�I I
'I E% MH-1
III -
II l
I
I I I
I
- I
�- --�_ - --- -- -�
I i -
II II_
I IC
HIGHWAY 6
0
0:
z
0
CO
2
2
a
1
l
I
BLOCK 2 BLOCK 2 \
LOT 1 LOT 2 \ ��
I i
r
El 70WER POINTSMH-
RRINGfON ROAD SEE SEPARATE PUNS
WAW SEWER
XIEMON
PLANS /
MH-A
- SEE SEPARATE PU16 1 I \\
I I /
SESffARVE PUNS I I
1 I
BLOCK 2 /
LOT 3
/ I
- - - - - - �i
\ \ i ------------
60 0 60 0
r ® �
SCALE: 1"=60'
EXHIBIT 1
EXHIBIT 2
--- 14---�" --
HIGHWAY 6
J — —
DRAINAGE
(A=5.643 AC)
� 1 I
O
�i B�;Z BLLOT OCK I
It
o
sl �
I l i
8 BLOOT9x BI /
1 0
0
100
200
SCALE:
1"=100'
EXHIBIT 2
�o
aYo
z�LL
—
a
�
S
w o
Z
h
¢
n =
w
K
p m �
o
� a
w
X w
a a
a
� v
�
0
o
0o
z w
a �
p a
F
z
a ? F
a a O
U
K
d N
V
N
= N
m
ry
a LL
v
,y
a o�
N
O
Y
U
O
s
m
�
w
ry
z
ti
� ti
W
z
�
S
a