Gateway BP(1.4)-CS010319Mr. Marty Paris, P.E.
Halff Associates
8616 Northwest Plaza Dr.
Dallas, Texas 75225
Dear Mr. Paris:
T H E C 1 T Y O F
CQPFELL
z.„
FILE.
March 19, 2001
RE: Gateway Business Park Lot 1R, Haverty's Drainage Improvements and Exchange
Circle Reconstruction
The City of Coppell has reviewed the referenced plans and has the following comments to
offer:
1. Make changes to title pages as indicated on the plans.
2. Provide junction boxes and manholes as indicated on sheet STM -1.
3. Need to show the distance the proposed 6'x 5' RCB and the 7'x 5' RCB will be placed off
of the lot lines.
4. The minimum grade for 8" sanitary sewer lines is 0.34
5. The proposed sanitary sewer manholes should be 5' in diameter.
6. Where the proposed 8" sanitary sewer line meets the existing 12" sanitary sewer, a 5'
diameter manhole should be constructed.
7. A manhole should be constructed at the west end of the proposed 8" sanitary sewer line.
8. Show the location of the proposed 8" sanitary sewer line crossing on the storm sewer
profile "Line A
9. Provide a detail for the proposed equalizer between the double 7'x 5' RCB.
10. Provide embedment detail for the proposed reinforced concrete box (RCB).
11. Show the location of the proposed 8" sanitary sewer line on the Grading Plan.
12. The curb removal should be sawcut 18" from back of curb.
13. The proposed cul -de -sac should be designed so that the middle is the high point and the
drainage occurs adjacent to curb (see sheet GR -1)
14. To ensure a clear delineation of where Exchange Circle ends and the driveway begins, a
curb return for the existing driveway needs to be constructed (see sheet GR -1).
15. Show the design capacity of the proposed drainage system on the storm sewer profile
sheets.
255 PARKWAY P.O. BOX 478 COPPELL TX 75019 TEL 972/462 0022 FAX 972/304 3673
There are various other minor comments throughout the plans. When all comments have been
addressed, please return these marked plans and two sets of revised plans to the City for
review. If you have any questions, please contact me at (972) 304 -3681.
Sin erely,
Michael A. Martin, P.E.
Assistant City Engineer