ST8402-CS 881222 (2)GINN, INC.
CONSULTING ENGINEERS
December 22, 1988
Dallas Water Utilities
Engineering Department
320 E. Jefferson, Rm. 211
Dallas, Texas 75203
Attention: Mr. T. W. Stewart, Manager - Water & Sewer Design
Re:
Denton Tap Road Improvements from Sandy Lake Road to Denton
Creek, Coppell, Texas.
Dear Mr. Stewart:
We are transmitting herewith a marked blue line copy of Sheet 22
of 56 of the Drawings for the subject project showing a conflict
between the proposed storm sewer and Dallas Water Utilities' 30"
Flower Mound Treated Water Line . During previous correspondence
with Mr. A. V. Almeida of Dallas Water Utilities, copies
attached, we had requested and received review comments of our
preliminary plans in order to avoid occurrences such as this.
Based on the comments received by this office we proceeded with
final design and construction began on June 15, 1988.
On December 5, 1988 we received notification of a conflict
between storm sewer lateral D-22 and the 30" water line from L.
H. Lacy Company, the City of Coppell's Contractor for the
project. A copy of their letter and attached field data is
attached.
Ginn, Inc., as the Project Engineer, has done some investigation
of alternate paving and storm sewer construction to alleviate the
situation. We hame not found a practical solution other than
lowering the 30" water line. The alternate solutions
investigated to date would not allow sufficient cover between the
water line and proposed paving and storm sewer to provide
adequate protection to the water line.
In light of the fact that the Denton TaD Road ImDrovements
project is .currently under construction, we hereby request that
you review the information included herewith and contact us as
soon as possible in order to set up a meeting between Dallas
Water Utilities, the city of Coppell and Ginn, Inc. to discuss
the situation. Please call me if you have any questions.
John 4. Karlsruher,
Po Eo
enclosures
cc:
ineer
.sruher, P.E., Project Engineer
17103 Preston Road · Suite 100 · LB II8 · Dallas, Texas 75248 · Phone 214/248-4900