HomeMy WebLinkAboutCHESTERFIELD BOTTOMSLEY POTTS PARKING LOT PUD FINAL - 52 90 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTSTORM DRAINAGE REPORT
FOR
CHESTERFIELD. BOTTOMSLEY AND POTTS
PARKING LOT P.U.D.
PREPARED FOR
RAM INTERNATIONAL
PREPARED BY
STEWART & ASSOCIATES. INC.
DECEMBER 3. 1990
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STORM DRAINAGE REPORT
The proposed new parking lot is located just south of the Diamond
Shamrock site and the Duds & Suds site. The parking lot area is now
dirt and weeds, and drains from west to east. The proposed parking
lot will be paved, and we propose to provide detention on the paved
area with a restricted outlet into the Diamond Shamrock detention pond.
To compensate for the added flow into the Diamond Shamrock pond, the
existing restriction plate out of the Diamond Shamrock pond shall be
enlarged.
The area of the proposed new parking lot is 0.62 acres and the historic
2 year runoff is 0.18 c.f.s. We propose to detain 5221 cubic feet on
the site with an outflow of 0.18 c.f.s. This outflow will drain into
the Diamond Shamrock pond, and the outflow of the Diamond Shamrock pond,
which is now 0.42 c.f.s., will be increased to 0.60 c.f.s. This will
be accomplished by increasing the restricted outlet opening from 3 3/16
inch diameter to 3 13/16 inches diameter.
Phillip . Robinson, P.E. & L.S.
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