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~ September 22, 1993 Job 515301.10
CF 15301E.D
Mr. Kenneth M. Griffin, P.E.
City of Coppell
P.O. Box 478
Coppell, Texas 75019
Re: Gibbs Station, Phase II
Coppell M.U.D. No. 1
Coppell, Texas
Dear Mr. Griffin:
We have reviewed the videotape of the 27" Sanitary Sewer Interceptor
Line furnished by the City of Coppell, as requested in your letter to
Mr. Paul Phy dated August 23, 1993. The District had already camera
inspected the entire 27" Interceptor in October of 1992, and the
District is currently in the process of taking bids to repair all
deficiencies noted during that inspection, including portions of the
line in the proposed Gibbs Station Phase II Subdivision area.
Based on the City's concerns that the portion of the line in Gibbs
Station Phase II should be replaced, we had an independant expert, Mr.
Bill Fredrick of ADS Environmental Services, view the City of Coppell
tape with us. ADS specializes in testing and evaluating the condition
of existing utility systems, and Mr. Fredrick has over 18 years of
experience in the rehabilitation of sanitary sewer lines. ADS
estimates the remaining service life of the 27" Sewer Interceptor Line
to be a mimumum of 15 years, and we concur with their conclusion.
Consequently, we have found no evidence to require or justify
replacement or repair to the 27" sewer line at this time, other than
the repairs previously noted. We have, however, recommended that the
D~~ ~n~,,~ to monitor existing ~!ow in the ~ .... ~
to periodically recamera the existing pipe as needed.
If you need any further information, please contact our office or
feel free to attend future District Board meetings held at the City
Hall.
Sincerely,
Jeffrey M. Hawkins, P.E.
FC: Board of Directors, Coppell M.U.D. No. 1