Vista Point II 3-7-CS050513COPPELL
Eric M. Hauglie, P.E.
Pacheco Koch Consulting Engineers
8350 N. Central Expressway, Suite 1000
Dallas, TX 75206
May 13, 2005
RE: Vista Point II/Lots 3, 4, 5, 6 & 7, Block A
Construction Plan Review Comments
Dear Mr. Hauglie:
The City of Coppell has reviewed the referenced plans and has the following comments to
offer:
Plat
1. The City of Coppell, with the consent of the City of Lewisville, will require the
placement of a second deceleration lane adjacent to Lot 5 along MacArthur Blvd.
Additional Right of Way may need to be dedicated fbr this lane.
2. Provide additional easement for the DDC located along High~vay 121 as was provided
at the DDC location on MacArthur Blvd. The proposed location of the DDC should not
conflict with future placement of sidewalks nor have the potential to interfere with
work on City utilities in the existing easement.
Storm Sewer Plan, C2.1
3. Provide a detail for the relocation of the City of Lewisville inlet along MacArthur
Blvd. Also, provide documentation of their approval of the proposed work.
4. A duct bank has been encountered in the ROW along Highway 121 during past
construction projects. Verify the existence and location of the duct bank along
Highway 12I and possibly along MacArthur Blvd. The proposed 5'x2' Box Culvert
likely will not work. Provide details of modifications to the proposed connections of
Line "A" at Sta. 0+00 and Line "B" at Sra. 0+00 in the event the duct bank is found to
interfere with the construction as shown.
5. The flow line of Line B as noted in the mark-ups does not match the flow line profile
on C2.2. Please verify and modify.
Storm Sewer Profiles, C2.2
6. The flow line of Line B as noted in the mark-ups does not match the flow line on C2.1.
Please verify and modify. (See comment 5.)
2
It appears that bends were placed on the water line where it crosses Storm Sewer Line
A at approximately station 3+40. Bends may also be needed where the water tine
crosses Storm Sewer Line B at approximately station 2+60. A 24" minimum clearance
should be maintained at storm sewer and water pipe crossings.
Water & Sanitary Sewer Plan, C3.1
8. Obtain approval from the City of Lewisville to lower their 12" water main along
MacArthur Blvd. Provide documentation of the approval to this department.
9. A minimum of one full joint of pipe should be installed where stub-outs extend from
crosses.
10. The proposed location of the DDC should not conflict with future placement of
sidewalks nor have the potential to interfere with work on City utilities in the existing
easement. Provide an additional easement as was provided at the DDC location on
MacArthur Blvd. (See comment 2.)
11. Call out the bends that have been added where the water line crosses storm sewer line
A. Bends may need to be added where the water tine crosses storm sewer line B. A 24"
minimum clearance should be maintained at storm sewer and water pipe crossings.
(See comment 7.)
12. Consider stubbing the sanitary sewer to Lot 3 at an angle greater than 90 degrees to
avoid backing-up of the line.
13. The flow line of sanitary sewer line SS-1 at station 0+60.7 does not match the profile
on sheet C3.2. Please verify and modify.
I4. An open cut of Forrest Hill Drive will not be permitted. Connect to the existing main
by dry bore.
15. There appears to be some extra pipe shown on the drawing at the location of the fire
hydrant nearest to Lake Vista Drive. (See the mark-ups.) Correct the drafting error.
16. General Notes: Water mains that are 10" and smaller shall be PVC C900, DR-14, Class
200. (Water mains larger than I0" shall be PVC C900, DR-18, Class 150.)
Sanitary Sewer Profile, C3.2
17. The flow line of sanitary sewer line SS-1 at station 0+60.7 does not match sheet C3.1.
Please verify and modify. (See comment 13.)
18. The vertical scale appears to be shifted by 5 on stations 4+00 through 7+00. Please
verify and modify.
Grading and Paving Plan, C4.1
19. The City of Coppell, with the consent of the City of Lewisville, will require the
placement of a second deceleration lane adjacent to Lot 5 along MacArthur Blvd. This
should be designed to the standards of the City of Lewisville. Provide documentation
of their approval of the proposed work within their City Limits.
Left & Right Turn Lanes, C4.2
20. Modify the Right Turn Lane Plan to show the additional right turn lane into the south
end of Lot 5.
21. Both right turn lanes are located in the City of Lewisville and that City's design
standards shall prevail. Provide documentation of permission granted for and approval
of construction for these lanes.
22. This Department received documentation from TxDOT denying the originally
proposed turn lane from Hwy. 121 into the driveway at Lot 3. In lieu of the turn lane,
we will require the turning radius into the driveway be an absolute minimum of 40' (a
larger turning radius would be preferable.) In addition, provide an acceptable taper per
ASHTO guidelines. Provide documentation of permission granted for and approval of
construction for this driveway from the City of Lewisville and TxDOT.
23. Modify the note regarding the Type II Median nose of the Left Turn Lane from
MacArthur to read" Install median nose per City of Coppell Standard Detail 2140."
(This newly adopted detail shows a roll-down nose.)
24. Provide details of the modification to the wall within the median. Ensure that no
hazards are created by its modification. Coordinate with the owner of the wall on the
proposed modifications.
Paving & Erosion Control Detail, C6.1
25. All details on this sheet and in the construction plans that are included in our Standard
Details should be removed from the plans. (Refer to the mark-ups.) The contractor is
required to have a copy of the City of Coppell Standard Details on the job site at all
times during construction.
Traffic Control Plan, C7.1
26. Update this sheet to reflect the changes along Highway 121 and the addition of the
right turn lane on MacArthur Blvd.
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 convenience.
Sincerely,
Graduate Engineer
Office Phone: (972) 304-3681
Fax: (972) 304-7041