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Park West CC(09)-CS 960109Coppell, Texas 75019 P.O. Box 478 Coppell, Texas 75019 214-462-0022 January 9, 1996 Dennis Chovan, P.E. Albert H. Halff Associates 8616 Northwest Plaza Drive Dallas, Texas 75225 Park West Commerce Center Lot 1, Block 6 (Myers Crow Company) Construction Plans Dear Mr. Chovan: The City of Coppell has received and reviewed the referenced plans and has the following comments to offer: 1. Title sheet needs to indicate drainage plans only. Also, the project location was shown in the wrong place. On the storm sewer plan sheet please address the following comments: a. Show the existing 12" RCP storm drainage pipe and headwall underneath Executive Drive. Also, provide note to grade the borrow ditch adjacent to Wrangler Drive. b. Why is the 48" RCP headwall angled to drain outside of the existing 20' drainage easement? c. Provide a junction box where line A and line D joint the existing 24" RCP. This junction box to set on private property. d. It appears that there is a lot of runoff draining to the 10' inlet on line D. An additional inlet i.e. grate inlet, may be needed. e. Indicate the location of the roof drains. There are various other minor comments throughout these plans. Once these comments have been addressed, the marked up plans along with two revised sets of plans should be resubmitted to the City for review. If you should have any questions concerning these comments, please feel free to contact me at your convenience. Sincerely Michael A. Martin, E.I.T. Assistant City Engineer