ST9605-CS 970818 LICHLITER/JAMESON
Environment & Infrastructure 1420 W. Mockingbird Lane, Suite 300
Consulting Engineers, Scientists and Planners Dallas, TX 75247-4906
Tel. (214) 630-8867
FAX (214) 631-8428
August 18, 1997
Mr. Michael A. Martin
Assistant City Engineer
City of Coppell - Engineering Dept.
255 Parkway Blvd.
Coppell, TX 75019-4409
Re: Northpoint Drive Extension / Construction Plans
Dear Mr. Martin:
Rust E & I, Inc. has addressed the various comments which your letter of July 15, 1997 listed. We
have incorporated all the changes within the various sheets of our Construction Plans. There are
however some of yours comments which we must address via this letter.
Item 6
It is my understanding in conversations with Mr. Jeff Williams of Graham Associates, Inc. that he
has a Grading Plan prepared for the property south of the Northpoint Drive extension. We have sent
to Mr. Williams some sets of the Northpoint Drive construction plans for his review and comment.
Mr. Williams is also in the process of obtaining from the various owners, Letters of Permission for
any regrading necessary and also for any change in the 100-year water surface elevation in
Cottonwood Creek.
Item 7
It was determined that constructing the 2 - 5X2' box culverts south of Northpoint Drive across the
S.H. 121 would not provide adequate fall in the flowline without extensive regrading in the TxDot
R.O.W.
I spoke with Mr. David Hensley, P.E. Design Engineer for the Texas Department of Transportation.
He informed me that once we have received approval from the City of Coppell, he will review the
Construction Plans.
Item 8
The 30" Sanitary Sewer line is owned by the City of Grapevine. I spoke with Mr. Chris Seaver, City
Quali~y through teamwork
Page 2
Item 8 (cont)
of Grapevine, Water Distribution - Wastewater Collection Superintendent. Mr. Seaver stated he
would have no problem with raising of the 5' Dia. manhole which is near the Northpoint Drive
connection to S.H. 121, provided that it is not raised more than 12" with grade rings which includes
any grade rings presently in use.
Item 9
Included with this submittal I have included copies of all Drainage Easements for this project.
Item 14
The owner of the property at the northeast comer of this project is T/E Northpoint Partners, Ltd.
This company in conjunction with T/E Freeport North Land II, Ltd, as managed by Emerson
Partners, Inc. are developing this project.
If you have any questions or concerns please do not hesitate in contacting me at (214) 630-8867 or
by Fax at (214) 631-8428.
Sincerely,
Andre' P.
Project Designer