ST8805-CS 881125Jerry Parch Consulting Engineers
November 25, 1988
Mr. John Karlsruher, P.E.
Ginn, Inc.
17103 Preston Road
Suite 100, LB 118
Dallas, Texas 75248
FILE COPY
RE:
JP No. 88009; Parkway Boulevard;
West of Denton Tap Road; Coppell, Texas
Dear John:
Enclosed is a print of our construction drawing of Parkw~
Bouelvard extending west of Denton Tap Road for your use.
As I have advised you previously, the station of Denton Tap Road T'~¢~
at the intersection with the centerline of Parkway Boulevard ~3¢4~
shown on the attached drawing (Denton Tap Road Station 191+12.08)
was determined using our survey ties for the back and ahead
tangents of the curve in Denton Tap Road, and the radius and
-delta angle shown on improvement plans for Denton Tap Road
perpared by Ginn, Inc. This information enabled us to establish
the centerline of Denton Tap Road. We then projected the
centerline of Parkway Boulevard (As Built on the east side of
Denton Tap Road) to the west and determined the intersection of
the roadway Centerlines.
Our procedure to establish the centerline of Denton Tap Road as
described above required us to adjust the location of two
existing nails, which seemed to be the PC and PT of the curve in
the centerline of Denton Tap Road at Parkway Boulevard,
approximately 0.2 ft. to the north.
In order that the turnout you are designing for the extension of
Parkway Boulevard west of Denton Tap Road is located in
accordance with our plat and construction plans, I have also
included a _pr_e!~iqg_~ coD~---~-£--th~ Final Plat of "Parkway
Boulevard West". This plat gives dimensions to north and south
property corners of ABQ Development Corporation frontage on
Denton Tap Road. The dimensions are in accordance with
dimensions shown on the worksheet I provided you on October 29,
1988 and with the approved Preliminary Plat of "Parkway Boulevard
West"
Since our firms are preparing plans for Parkway Boulevard West
concurrently, it is important that we are in accordance on the
roadway location. Please use the ties to ABQ property corners
shown on the Final Plat enclosed for the location of Parkway
Boulevard West, rather than computed centerline stationing in
Denton Tap Road.
320 Westway Place, Suite 501 · Arlington, Texas 76018 · Metro (817) 467-2418 · (817) 465-0259
Mr. John Karlsruher, P.E.
JP No. 88009
November 25, 1988
Page 2 of 2
Also please be advised that there appears to be a difference in
elevation datum between your plans for Denton Tap Road and
elevations used on our construction plans. We have lowered
elevations on the Denton Tap Road improvement plans by 0.36 feet
to be in accordance with the elevation datum we are using.
Unless I hear differently from you, I will assume that the
location of the Parkway Boulevard West turnout shown on your
plans with regard to corners of ABQ Development property on the
west side of Denton Tap Road is in accordance with the dimensions
shown on the Final Plat of Parkway Boulevard West enclosed. If
we can assist you in locating ABQ property corners on Denton Tap
Road, please call. Thank you.
Sincerely
~erry Par/~~.'.
JP:ch
Enclosures: Parkway Boulevard Plan and Profile (Preliminary Copy)
Parkway Boulevard West Final Plat (Preliminary Copy)
cc:
Mr. Russell Doyle, P.E./City of Coppell with enclosures
Mr. Jay Chester, P.E./ABQ Development Corporation