HomeMy WebLinkAbout Drainage Memott I
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June 15, 1976
MEMO: Building Commissioner and Mayor
G�
RE: Drainage problems effecting Eden Forest.
The problems effecting Brookshire Sec. 6, are intire
bility of Lumber Mart, Inc. and one or two homeowner
proposals or solutions to those problems have been m
Mart and the recommendation made in the Building Com
`..' effecting lot # 351 and 353, should be complied with
City Engineer feels that drainage structureSpresently existence in
Eden Forest and Eden Glen have been previously approved by Clyde
`z..`.: of the Cit
E, Williams and Associates and or varioua bffcamels The�� mainy of
Carmel and these structures were g�,cepte y
3;'• tenance and possible modification if proven necessary.)are primianly
responsibility of the City,
;:..; The entire question that has been raised at this time mainly points
up the complete lack of design criteria or guide lines for either
developer to follow or the city to apply when evaluating any
proposed developments.
The existing structures have been checked for the existing and
proposed development upstream and these design checksindicate that
these structure will handle at least a five (5) year freque
thncy storm
th 6 hour duration with upstream portion of water shed 100% developed.
r+ Any design less than a maximum probability storm ( this is some what
worse than a hundred year storm) would result in overflowing the
4'. existing streets. It is not generally an awEcepted criteria to
t in very few instances
€r;
{� 14cWsign to 100 year storm frequency excep design criteria.
u damages dictate the need for such ea
�,�
�
,� �'` /lsomewhere
were potential
between one (1) year frequency and hundred (100) year
recognized the problem we have and wishing
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frequency. Mr, Thompson
the development of some criteria which will put an
to encourage
end to the re-ocuring questions and problems such as this one, stated
financially in the cost of an
that he was willing to participate
design study to:develop a proposed drainage standard
;
engineering
for Carmel - Clay area. He also agreed to pay for the cost of
in Eden Estates
engineering design of improved drainage structures
developed inthe drainage standard)
a.
and Eden Glen to the new criteria
if this criteria were different than that which was origionally
of these structures.:.
P P
used, and if the City determined that e lacement
uc t if
Bost
;.
was necessary and desirable. The cost of
be at the city's expense.The s ofpdesignnpaid by
done, would
be his share of cost attributable to the increased
Thompson would
coefficient caused by his Eden Estates Development.
%g
run-off
It is the City Engineers reccmmendation that the final plat for
that the Board of public works
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Eden Estates Sec 4, be approved, and
consider accepting Mr Thompsons offer to pay for the development
by Carmel
+
of a proposed drainage standard)to be ultimately adopted
in the subdivision
in ordinance frmand included by reference
t~
control ordinance.
With reference to the probable flooding problem at lot 39,
Eden Glen, I reccommend that the building commissioner
.� document all data rerlative to the building permit issued and the
u. occupancy certificate issued and determine that no irregularities
exist here. Then the property owner should be notified by both
the building comm. and Mr. Thompson of the flood hazard
on his property. Necessary protective action should then be taken
by the property owner. This may be flood insuranceas. and/or
. protective landscaping if feasable. This problem will exist
{ whether the Eden Estates subdivision is built or not. However
y:r
p the frequency of the flooding would be increased somewhat.
Fred Hohl ; Ci y Engineer