Northlake 635(4)-CS000525Pacheco Koch Ccnsd t ~.~.~ E~'ginee.-s
May 25, 2000
PK No.: 1568-99.214
Mr. Kent Collins, P.E.
CITY OF COPPELL
Engineering Department
255 Parkway Boulevard
Coppell, Texas 75019
Re: COPPELL TECH CENTER II - Request for Variance on Pavement Design
~ Coppell, Texas
Dear Mr. Collins:
On behalf of CMC Commercial Realty Group, we request that the City of Coppell grant
a variance to the Subdivision Ordinance on the pavement design criteria for the Coppell
Tech Center I1. CMC Commercial Realty Group wishes to eliminate the use of lime
stabilization on this project in order to save on cost associated with the pavement. In
lieu of lime stabilization CMC Commercial Realty Group will increase the concrete
strength from 3000 psi to 4000 psi in both public and private pavement areas, but the
thickness will not change. In areas within the public right of way along drive approaches
the subgrade will be composed of a minimum six (6)-inch thick flexible base.
Thank you, for your consideration on this matter. If you have any questions or need any
additional information, please contact me at your convenience.
Sincerely,
Dirk M~
DMK/emf
1568-57
enc.
cc: Ray Garrison -WSI Architects
Pacheco Koch Co.-s..:':i?,,,g Eng
May 25, 2000
PK No.: 1568-99,214
Mr. Kent Collins, P.E.
CITY OF COPPELL
Engineering Department
255 Parkway Boulevard
Coppell, Texas 75019
~1~ Re: COPPELL TECH CENTER II - 635 BUSINESS PARK
Response To First City Review Comments
Coppell, Texas
Dear Mr. Collins:
Pacheco Koch has reviewed the May 17, 2000 comment letter and civil plan redlines.
The following is an itemized list of how we responded to each comment of the review
letter:
1. The detention area located adjacent to Lakeshore Drive is designed to decrease
the storm water runoff for the site. The proposed runoff will be in accordance
with the drainage area map for the storm system within Lakeshore Drive and
Crestside Drive.
2. The detention area side slopes have been modified to a 4:1 maximum slope (see
grading plan, C3.1).
3. See response 1.
4. The standard detail sheet SD-3 is referenced on the drainage plan, C3.2.
5. The proposed curb inlet location will adequately collect the flow along Crestside
Drive.
6. The area of ponding at the northwest portion of the site is shown on the drainage
plan, C3.2.
7. Concrete collars are provided for pipe size changes on the storm sewer profile,
C3.3.
8. Concrete encasement is provided between the utilities which do not have 2 feet
of clearance at the crossing.
9. A sanitary sewer manhole is provided at the Lakeshore Drive sewer connection.
Wastewater access devices are provided at the property line for the Lakeshore
Drive and Crestside Drive sewers.
Mr. Kent Collins, P.E.
May 25, 2000
Page 2
10. A civil engineering plan set was sent to the fire marshal at the time of this resubmittal.
11. A paving variance is requested, refer to enclosed letter.
12. Barrier free ramps are provided at all driveway locations.
If you have any questions or need any additional information, please contact me at your
convenience.
Sincerely,
DMK/emf
1568-58
enc.
cc: Ray Garrison - WSI Architects