HomeMy WebLinkAboutSHAMROCK MANOR PUD PRELIMINARY - 53 89 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORT0
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October 30, 1989
STEWART&\SSOCIATES
Consulting Engineers and Surveyors
PRELIMINARY DRAINAGE REPORT
SHAMROCK MANOR. A REVISION OF
THE WEST PORTION OF PINEWOOD P.U.D.
Pinewood P.U.D. is located between Stover Street and Stanford
Road about 500 feet south of Drake Road. The site was platted in 1979,
and the original utility plans and drainage report were prepared by
Joseph Roesser.• The curbs, pavements, and utilities were constructed
per these plans. Storm drainage detention is provided in the parking
lots with outlet through area inlets and 10— inch diameter pipes.
In 1984, some replatting was done of the east part of Pinewood
P.U.D., although it did not change the -curbs and pavement, and the.
drainage was not affected. There was supposed to be a restriction
plate placed in the outfall manhole located on the west side of Stover
Street. This plate was never installed, and should be done at this
time. There appears to be a question regarding the opening size in
this proposed restriction plate, but that will be resolved before the
final drainage report is finished.'
The Shamrock Manor revision to Pinewood P.U.D. will not increase
the impervious area over that of previous plans.
Provisions should be made during construction to stop silt and
debris from entering the existing storm drainage system.
Phillip I Ro inson, P.E. & L.S.
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James H. Stewart
and Associates. Inc.
214 N. Howes Street
PO. Box 429
Ft. Collins, CO 80522
3031482-9331
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PRELIMINARY DRAINAGE REPORT
SHAMROCK MANOR, A REVISION OF
THE WEST PORTION OF PINEWOOD P.U.D.
Pinewood P.U.D. is located between Stover Street and Stanford Road about
500 feet south of Drake Road. The site was platted in 1979, and the
original utility plans and drainage report were prepared by Joseph
Roesser. The curbs, pavements, and utilities were constructed per these
plans. Storm drainage detention is provided in the parking lots with
outlet through area inlets and 10—inch diameter pipes.
In 1984, some replatting was done of the east part of Pinewood P.U.D.,
although it did not change the curbs and pavement, and the drainage was
not affected. There was supposed to be a restriction plate placed in
the outfall manhole located on the west side of Stover Street. This
plate was never installed, and should be done at this time. There appears
to be a question regarding the opening size in this proposed restriction
plate, but that will be resolved before the final drainage' report is
finished.
The attached plan shows the existing construction, along with the proposed
new building layout. The new building configurations will not change
the original drainage patterns, and the impervious area will not be
increased.
Also shown on the attached plan, is the detention pond, which is now
existing. Sometime in the past, a garage was constructed in the parking
area. This was done per the Pinewood P.U.D. plan, as approved in 1984.
This garage is in the detention pond area, and will be flooded to a depth
of six inches before overflow occurs. I don't know how.or why that
happened, but I suppose it will have to be acceptable to the owners,
since it already exists.
There is no change in the volume of, the detention pond from the volume
as originally approved.
Provisions should be made during construction to stop silt and debris
from entering the existing storm drainage system. This will be addressed
by the final plans.
Phillip F Robinson, P.E. & L.S.