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HAYTER ENGINEERING, INC. CONSULTANTS PLANNERS ENGINEERS January 2, 2001 Mr. Terry Townsend, Public Works Director City of Paris P.O. Box 1007 Paris, Texas 75460 Re: Drainage Project 500 block of Clarksville Street and Lamar Avenue 700 block of Bonham and Grand Streets 24' and Lamar Avenue Terry- 4445 S.E. LOOP 286 PARIS, TEXAS 75460 (903) 785 -0303 FAX (903) 785 -0308 180024 -20 This letter is a follow -up on our telephone conversation of Tuesday December 5, 2000 concerning the above - referenced project. We discussed the reluctance on the part of TXDoT to install the proposed inlet improvements without some sort of a waiver of liability from the City of Paris. We also discussed the concern on the part of the City Attorney to issue any such waiver without further study on our part. We talked about several options, and we decided that it would be best to do an initial low -cost study to gain a grasp on the magnitude of the problem before we embarked on a costly in -depth study. Specifically, we decided to look at the percentage of the overall drainage area that was being improved by the installation of the new inlet boxes. An area that had a small improvement in the number of acres of drainage area being funneled into the existing drainage system would probably not be significantly impacted. However, if the new inlets allowed a large percentage of the overall drainage area to be added to the drainage system faster than is presently being allowed, then it would tend to increase the downstream flowrate and thus the potential for damages from flooding. We have completed our assessment of the overall drainage areas, and the percentages of those areas that would see improved access to the stormsewer collection system via the proposed curb inlet improvements. These results are as follows: Location Percentage 24"' and Lamar 19