121 BP Phase 1-CS 990223· .- Halff Associates
~214~ 346-6200
~1~ FAX ,214:1 739-0095
ENGINEERS · ARCHITECTS · SCIENTISTS
PLANNERS · SURVEYORS
February 23, 1999
AVO 17585
Mr. Michael Martin
City of Coppell
255 Parkway Boulevard
P.O. Box 478
Coppell, Texas 75019-4409
Dear Mr. Martin,
Based on prior discussion and correspondence with your office, the existing 8"
sanitary sewer main along the east property line of Lot 2, Phase 1. Block 1, of the One
Twenty One Business Park is to be upgraded to a Iff' main as required by the city Master
Utility Plan. As indicated on the attached exhibit, the existing main does not meet the
TNRCC minimum slope requirement of 0.25% for a 10' main. It is our opinion that a
localized replacement will not benefit the city or our client, and that this section of the
main should be part of upgrading a larger portion of the system. We request that
replacement of the 8" main within Lot 2 not be a requirement for development of this
site.
If you have any questions or require any additional information, please contact Pat
Acker or myself at 214-346-6200.
Sincerely,
HALFF ASSOCIATES, INC.
Matthew M. Dorsett, EIT
Graduate Engineer
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