Northlake 635(5)-CS 990524 May 24, 1999
Todd Abbott
Halff Associates, Inc.
8616 Northwest Plaza
Dallas, TX 75225
RE: Northlake 635 Business Park, Lot 1, Block D
Dear Mr. Abbott:
The City of Coppell has reviewed the referenced plans and has the following comments to
offer:
1. Include a paving plan that should include paving dimensions and paving design
(thickness, subgrade, etc.).
2. Consider providing storm drain stub-outs to the south such that future phases can tie into
the proposed system without tearing up existing concrete paving.
3. Include profiles and all appropriate information for all sections of storm drain pipe.
4. For erosion control purposes at storm drain outfalls, consider using rock rip-rap instead
of the proposed curlex blanket.
5. Indicate protected areas on the plan as per the 404 wetland permit.
6. Per the Dallas Drainage Design Manual, concrete drainage pipe will be installed on a
minimum of 0.30% grade.
7. All pipe size changes require a concrete collar.
8. All fire hydrant locations need to be approved by the Fire Marshal, Travis Crump. He
can be reached at (972)304-3053.
9. Show the location of the stabilized construction entrance on the erosion control plan.
10. For the proposed left-turn lane, brick pavers need to be provided in the median noses per
City Standards.
11. The paving depth for the left-mm lanes should match the adjacent concrete paving.
12. Any work in or adjacent to Beltline Road will be conducted between the hours of 9am
and 3pm.
There are various other minor comments throughout the plans. When all comments have been
addressed, please return these marked plnn~ nnd two sets of revised plnn.~ to the City for
review. If you have any questions, please contact me at (972) 304-7019.
Sincerely,
Kent M. Collins, E.I.T.
Graduate Engineer