Amberpoint BP-CS020108· ,, Halff Associates
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8616 NORTHWEST PLAZA DRIVE
DALLAS, TEXAS 75225
(214) 346-6200
FAX (214) 739-0095
January 8, 2002
Kenneth M. Griffin, P.E.
Director of Engineering & Public Works
255 Parkway
Coppell TX, 75019
RE: Amberpoint Business Park At Coppell, Bldg. 1
Response to Construction Plan Review Comments
Dear Mr. Griffin:
We have reviewed the comments dated December 10, 2001 regarding the above stated
plans. We have addressed the comments as follows
1. Cover Sheet - We have removed the incorrect City of Coppell Logo from this sheet.
2. Sheet CPP01 - We have added ADA barrier-free ramps to all drive approaches.
3. Sheet CPP01 - We have revised note number 3 to reflect the City of Coppell
requirements for Lime -Stabilized sub-grades stated in the City of
Coppell Standard Construction Details.
4. Sheet CGP01 - We have added a note stating that slopes shall not exceed 3:1 in
Landscape areas. In addition, we have added a note to reference the
construction plans for the extension of Northpoint drive for grading in
the right-of-way. Grading in the right-of-way will be performed as
part of the Northpoint Drive contract. The plans for Northpoint
include a flat section within the right-of-way for the future
construction of a sidewalk.
5. Sheet CDA01 -We have added an overall drainage area map for both onsite and
offsite drainage data. (See sheet CDA02)
6. Sheet CDA01 - We have revised Drainage area designations on this sheet to match
those included in the set of plans for the extension of Northpoint
Drive.
7. Sheet CDA0! / CSD01 - We have revised the grading and added a curb inlet near the
south east comer of the building to pick up the flow in that
area as requested.
8. Sheet CSD01 - We have added radius pipe to the 36" RCP south of the building in lieu
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of the type B manhole requested by the City of Coppell Engineering
Department.
9. Sheet CSD02 - We have removed the negative hydraulic jumps from all hydraulic
grade lines.
10. Sheet CWWO1 - A 10' utility easement along both sides of the proposed Northpoint
Drive is being dedicated by plat. We have included a copy of the
plat with the plans.
11. Sheet CWW01 - We have revised the 2" domestic service and meter as requested.
The 2" services now comes off of the 12" waterline and the meter is
now located in the right-of-way of Northpoint Drive.
12. Sheet CWW01 - We have added the 8" gate valves to the 2 waterline stub outs to the
north. In addition, we have revised the tim hydrant placement per
comments offered by the City of Coppell Fire Department in their
review of the building plans submitted by the project Amhitect.
13. Sheet CWW01 - We are confident that 6" sanitary sewer lines are adequate for the
future construction of the building to the north.
14. Sheet CWW01 - We have added a profile of the proposed sanitary sewer trunk line as
requested. (See sheet CWW02)
15. Sheet CWW01 - We have added a 5' diameter manhole to the sanitary sewer at the
property line as requested.
16. Sheet CEC01 - We have added a silt fence around the entire site as requested.
We have also addressed other minor comments throughout the plans that are not
addressed in this letter. If you have any questions please do not hesitate to call me at
(214) 346-6324.
Cc: Jim Gaspard, Transwestem Commercial Services
Sincerely,
Jaime R. Beard, E.I.T.