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Woolpert, Inc.
333 N Alabama Street, Suite 200
Indianapolis, IN 46204
317.299.7500
October 01, 2019
Alex Jordan
City Engineer
City of Carmel
One Civic Square, 1st Floor
Carmel, Indiana 46032
RE: Pipe Cover Variance Request – Michigan Road Retail
Dear Mr. Jordan:
On behalf of our client Cityscape, by this letter we respectfully request a variance from the City of Carmel
Stormwater Technical Standards Manual Section 501.01 for the proposed Michigan Road Retail project. The
need for this request is due restraints of the grading of the proposed road at a low point near structures 2.1
and 2.2 of the proposed plans.
The pipe between structures 2.1 to 2.2 was originally planned to allow for an 18” pipe to cross the road,
which would have met depth requirements. After some revisions to the calculations at an earlier stage in the
design process, the size was increased to a 24” pipe to meet the Stormwater Technical Standards Manual for
runoff discharge flow. The proposed 24” pipe would not have sufficient pipe cover to meet requirements in
section 501.01 by half of a foot. This variance, if approved, has been written in accordance with the standards
to seek approval from the City of Carmel for a pipe cover requirement variance. To help minimize impact of a
pipe with only 2 feet of cover across the road, rather than 2.5 feet, the indicated pipe run will be made of
Class V RCP per direction of the City of Carmel review staff.
If you should wish to discuss these items in detail, please contact me at your earliest opportunity. Thank you
in advance for your consideration of this request.
Sincerely,
Woolpert, Inc.
Jon Sheidler, PE