Duke Lesley-CS061116
THE.CITY.OF
corrELL
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November 16, 2006
C. Jack Evans, P.E.
Pacheco Koch Consulting Engineers
8350 N Central Expy, Suite 1000
Dallas TX 75206
RE: Dividend Drive and Point West Boulevard
Construction Plan Review Comments
Dear Mr. Evans:
The City of Coppell has reviewed the referenced plans and has the following comments to offer:
General Comments -
1. This set does not include traffic signal plans for the intersection of Belt Line Rd. and
Dividend Drive. Will those plans come under a subsequent set of plans or will they be
included in the next submittal for this project?
2. Will there be streetlights in the median of Dividend Drive? If so, there was no design
included in the plan set.
3. Provide sleeves under the proposed road before stabilizing for irrigation, gas, electric and
communications for the future developments so there is no need for franchise utility
companies to dig up the street at a later date to provide these services.
4. The street name of Wrangler Drive is Incorrect on the cover sheet's key map.
Plat -
5. The plat is going to P& Z on Thursday. November 16 and it needs to reflect the appropriate
ROW width for Point West Blvd. with a minimum 50' ROWand 10' sidewalk utility
easement for a total of 60'.
6. There appears to be a need for ROW off the existing Lot 2 Block C of Gateway Business
Park at the area where Dividend Drive enters this property. Let us know how you intend to
address that.
Dividend Drive Pavine: Plan & Profile -
7. Use consistent dimensions. Your typical paving section is measured face-to-face; your plan
& profile view is measured back-to-back.
8. The plan view has driveways that are shown - are those where you propose them to be or are
those potential locations only? That leads to the question of median openings, turn bays,
drive approaches ~. what portion of any of those should be constructed now, and which
should be done with each individual development?
2~)5 PARKWAY * P.O.BOX 9478 *
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COPPELL TX 75019 * TEL 972/462 0022 * FAX 972/304 3673
9. There are a few places that show conflicts between fire hydrants or curb inlets at the future or
potential driveway locations. Do those need to be addressed now or will those locations be
modified in the future?
10. Should there be a turn bay for traffic turning north into the proposed drive at the intersection
of Dividend Dr. and Point West Blvd.? If so, should it be constructed now?
II. Stamped concrete bands should be constructed at all three legs of the intersection of
Dividend Drive and Point West Blvd.
12. Point West Blvd. is dimensioned as 28' back-to-back but should be a minimum of 37' back-
to-back.
13. The intersection of Dividend Dr. with Belt Line Rd. should have a stamped concrete band
that is a minimum 8' in width.
14. You are proposing to close off a median opening and a turn bay that serves the property on
the east side of Belt Line Rd. and move the median opening to the north. Should a new turn
bay be constructed to serve the property east of Belt Line?
15. Provide a detailed grading and paving plan for this median opening.
Point West Blvd. Pavine: Plan & Profile-
16. This street should be 37' back-to-back, with a minimum 50' of ROW with 10' of sidewalk
and utility easement.
17. There is a proposed inlet that seems to be in conflict with a proposed future driveway.
Consider that in your design.
18. Paver bands (stamped concrete) should be shown in the intersection of Dividend Dr. and
Point West Blvd.
Water and Sewer Plans -
19. There are some areas where it appears that the storm sewer and the waterline could conflict,
however, there is no profile of the storm sewer included in the waterline profile. Include all
utilities and storm sewer crossings in the waterline profile.
20. There are several 12" stub-outs shown with a fire hydrant on the opposite side of the road
from the main. Is it really necessary that those be 12" stub-outs, or can something smaller
than 12" be used?
21. There are a few high points in the proposed profile that will need air release valves.
22. You will need to include blow-off valves in the area where the waterline is lowered under the
proposed box culverts.
23. The dead end lines along Belt Line and Point West are longer than the maximum allowed.
These lines should be connected prior to developing the adjacent property. This will require
the dedication of a 20' utility easement.
24. Ensure adequate separation of all water and sewer crossings.
25. How ill the 20 easement containing the sewer line adjacent to the Belt Line Right of Way be
dedicated?
Drainae:e Plans -
26. Drainage entering the TXDOT right of way will need to be coordinated with that agency.
27. Ensure an appropriate agreement is in place for the public storm water entering the adjacent
private property (easements, developer's agreements, etc.).
28. Are the proposed open channel drainage systems permanent or temporary? Will they be
enclosed when the adjacent property is developed?
29. If they are permanent they will need additional structural measures to prevent erosion
(concrete bottom, gabions. etc.).
30. Who will be responsible for maintenance of these channels?
31. Verify capacity of downstream collection system through field investigation to ensure that
you will not cause a problem for the adjacent properties.
32. Additional comments on drainage issues may be forthcoming when more details are worked
out.
Please make the necessary changes and submit these marked-up plans and two sets of revised
plans to the City for review. If you have any questions, please contact this office at your
convemence.
Sincerely,
~'f ' "..-:) ,
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Keith R. Marvin, P.E.
Assistant City Engineer
Office Phone: (972) 304-7044
Fax: (972)304-3570