HomeMy WebLinkAboutDrainage ReportREVISED & ADDITIONAL INFORMATION FOR
Detention Pond
Drainage Report
for
A New Laboratory and Office Facility for TDIBrooks International
South Dowling Road
Brazos County, Texas
April, 2011
Revised September, 2011
SEPTEMBER 30, 2011
Engineer.•
SCHULTZ ENGINEERING LLC
TBPE Firm Registration No. 12327
P.O. Box 11995
College Station, TX 77842
2730 Longmire Drive
College Station, Texas 77845
(979)764-3900
Developer.'
TDI/Brooks International
1902 Pinon
College Station, Texas 77842
(979)693-3446
CONCLUSION
The drainage system and detention facility described in this report is designed in accordance with the
standards in the BCS Drainage Design Guidelines except as noted in this report. The pond is designed in
accordance with accepted engineering standards. The post development peak runoff flowrate into the
adjacent property will be less than the predevelopment flowrates for all storm events. The Post
development runoff from this Property for the 100-year storm event will not adversely affect the
properties just downstream of this property_
CERTIFICATION
"This report for the drainage design of A New Laboratory and Office Facility for TDI/Brooks
International, was prepared by me in accordance with the provisions of the Bryan/College
Station Unified Drainage Design Guidelines for the owners of the property. All licenses and
permits required by any and all state and federal regulatory agencies for the proposed
drainage improvements have been issued."
OF
F-12327
SCHULTZ ENGINEERING. LLC.
Jose P. Ahultz, P.E.
Page 5 of 5
APPENDIX A
Detention Pond
Elevation — Storage Data
Elevation — Discharge Data
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TDI/Brooks Laboratory & Office Facility
Detention Pond Area -Capacity Data
V = H * ([A1+A2 + (A1*A2)"21 / 3)
V = volume, ftZ
A = area, ft2
H =•difference in elevation. It
Area - Capacity
Data
Elevation
(ft)
Depth
(ft)
Area
(ftZ)
Area
(acres)
Volume
(ft)
Cumulative
Volume
(ft)
90 %
Cumulative
Volume
(ft')
90 %
Cumulative
Volume
(ac-ft)
322.35
0.00
63,631
1.46
0
0
0
0.00
_323.00
0.6_5
67,043
1.54
42,46442,464
38,218
0.88
_ 324.00
1.65
73,566
1.69
70,279
112,743
1_01,469
2.33
324.50
2.15
76,530
1.76
37,522
150,265
135,239
3.10
325.00
2.65
79.494
1.82_
76,511
189,254
170,329
3.91
325.35
3.00
----
81,000
1.86
104,292
217,035
195,332
4.48