HomeMy WebLinkAboutLetter to Brazos CountyOctober 16, 2008
Richard F. Vance, P .E.
County Engineer
Brazos County Road & Bridge De1~t.
2617 State Highway 21, West
Bryan, TX 77803
P.O. Box 9253, College Station, TX 77842
Off/Fax: (979) 690-0329
email: civil@rmengineer.com
RE: Creek Meadows -Section l C, Phase One -Commercial Office Building
Statement of Negligible Post-Development Stormwater Runoff
RME No. 202-0363
Richard Vance:
This letter is in response to a comment by the City of College Station regarding the design and
construction of stormwater in.fra;;tructure for the above referenced development. This
commercial office development ( <1 acre is size) is designed in accordance with the approved
Master Plan and Preliminary Plat cif the Creek Meadows subdivision. At full construction of
Section 1 C, there will be a regional 1etention facility and underground stormwater infrastructure
to properly mitigate the increased stormwater runoff generated by this development and
subsequent phases of Section 1 C (the detention facility is located in Phase Two of this Section).
However, no detention ponds or stormwater infrastructure is proposed for this phase of
construction. RME Consulting Engineers believes that the increased runoff generated by the
proposed improvements is negligible and therefore should not require an individual stormwater
facility. Please reference the folk1wing table, illustrating the computed net increased flows
generated from the proposed site, as computed by the Rational Method.
5-Year 1.16
10-Year 1.30
25-Year 1.49
SO-Year 1.69
100-Year 1.75 ---
Attached is an excerpt of this proje1~ts site layout which illustrates the proposed improvements.
Also attached is an excerpt that illustrates Section 1 C. The regional detention facility for this
development and all of Section 1 C will be contained in Common Area "F".
CD 1-202-0363-LOS Page 1 of2
Please do not hesitate to call if you b ave any questions.
Sincerely,
CD 1-202-0363-LOS
Creek Meadows -Section lC, Phase One
Stormwater Runoff
October 16, 2008
Page 2 of2
y;
, /, ~PROPOSED
10' P.U.E.
PROPOSED 25'
PRIVA 1E ACCESS &
PARKING EASEMENT
LOT 1
(0.360 ACRES)
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30.29'
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N ff 55' 42" E -76.29' I =-~-46-.-oo---.~~~~-
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CREEK ME DOWS
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GROSS AREA -J; 97 so.FT.
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CEMENT STABIUZEO
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LOT 2
(0.161 ACRES)
24.00°
S.65'
9.64'
GREENS PRAIRIE ROAD WEST
(80' RIGHT-OF-WAY)
22' SEAL COAT ROAO w/OPEN-OITCH
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361 ACRES
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