HomeMy WebLinkAboutStormwater Design GuidelinesHester Engineering Company #f-3476
7607 Eastmark Drive, Suite 253-B
College Station, Texas 77840
979-693-1100 mhester@hester-engr com
June 3, 2013
Erika Bridges, Err
CoCS Engineering Division
P.O. Box 9960
College Station, Tx 77840
979-764-3570
Re: Copper Creek Condos, 301 Southwest Parkway
Detention Exemption Letter
Erika,
Section II.C.3.b Unified Stormwater Design Guidelines.
I have conducted a topographic review and field investigation of the existing and proposed
flow patterns for stormwater runoff from (Copper Creek Condos) to the main stream of (Bee Creek
Tributary 8). At build -out conditions allowable by zoning, restrictive covenant, or plat note, the
stormwater flows from the subject subdivision or site project a.ill no cause any ircreas2 in flooding
conditions to the interior of existing building structures, including basement areas, for storms of
magnitude up through the 100-year event
The exemption that applies to this development:
(1). Adjacent to Primary System
Any development adjacent to the Primary System may demonstrate that detention is not beneficial to
the system with an engineering timing analysis. The analysis should include all upstream development
broken into basins of size similar to the development being studied and carried downstream until the
development represents less than 2% of the total drainage basin.
IN REFERENCE TO
Detention Timing Analysis Update prepared by J. Chris Harris, P.E., CFM with Kimley-Horn & Associates,
Inc. dated January 23, 2013.
Sincerely,
Michael G. Hester. P.E.
Attachment: Kimley-Horn and Associates, Inc. Detention Timing Analysis Update, Lot 2 William
Brooke Hunter Estates
HESTER ENGINEERING COMPANY #F-3476
7607 EASTMARK DRIVE, SUITE 253-13
COLLEGE STATION, TEXAS 77840
979-693-1100
June 3, 2013
Re: COPPER CREEK CONDOS SITE PLAN
CoCS STORM WATER DESIGN GUIDELINES SECTION III.C.1 CERTIFICAITON
This report (plan) for the drainage design of COPPER CREEK CONDOS was prepared by me (or under my
supervision) in accordance with provisions of the ervan/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.
Michael G. Hester, P.E.
Licensed Professional Engineer
State of Texas No.69104
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MICHAEL 0.HESTER
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