Coppell Greens 2-CS 990702 Coppell, Texas 75019
/,,~--~/~ The City With A Beautiful Future 972-462-0022
~',,,...~/ /L___..~ P.O. BOX478
(~~~ COPPELL, TEXAS 75019
July 2, 1999
William A. Anderson, P.E.
Dowdey, Anderson and Associates
5225 Village Creek Drive Suite 200 FILE
Piano, Texas 75093
RE: Coppell Greens Phase Two
Dear Mr. Anderson:
The City of Coppell has received and reviewed the referenced plans and has the following
comments to offer:
1. ADA ramps at all intersections will be built with the subdivision.
2. All vertical curves must meet the requirements of the City Subdivision Ordinance.
3. Per the Dallas Drainage Design Manual, use 10 minutes as the minimum time of
concentration unless calculations are provided to support the use of 15 minutes.
4. Indicate the type of pipe and pipe diameter in plan view for the storm drain. Also, provide
proper storm drain profiles per the Dallas Drainage Design Manual.
5. Make sure that the spacing between sanitary sewer manholes is no more than 500 feet.
6. Fire hydrant locations need to be approved by the City Fire Marshal, Travis Crump. He can
be reached at (972)304-3503.
7. Fire hydrant spacing needs to meet the requirements of the subdivision ordinance.
8. Show all utility crossings and the proposed grade on the sanitary sewer profiles.
9. The maximum depth for a 4' diameter sanitary sewer manhole is 12 ½ feet. Deeper
manholes require the use of a 5' manhole.
10. Show the location of any proposed retaining walls on the grading plans. If the walls are to
be constructed with the subdivision then a detail needs to be provided on the plans. ~Also,
retaining walls will not be allowed to span across utility easements.
There are various other minor comments throughout the plans. Once these comments have been
addressed, these marked plans and two sets of revised plans should be resubmitted to the City
for review. If you should have any questions concerning these comments, please contact me at
(972) 304-7019.
Sincerely,
Kent M. Collins, E.I.T.
Graduate Engineer