Vista Ridge 1R-8 D-CS050630jOWDEY, ANDERSON
& ASSOCIATES~ INC.
CIVIL ENGINEERS
5225ViJhgeCreekDrive
Suite200
Piano, Texas 7~093
972-931-0694
912,931-9538 Fax
MEMO FOR RECORD
6/30/05
BAA lOB NO. O3072C
TO:
CC:
Mike Smith (Rodman Utilities)
Larry Davis (City of Coppell), Rodney Louviere (Dowdey, Anderson & Assoc.),
Neal Heckel (Mammoth Development), Keith Marvin (City of Coppell)
FROM: Casey Ross
RE: Th~nfrastructure
I was informed of a concern that the City of Coppell Construction Inspector, Mr. Larry Davis,
had with the depth of the 8" waterline that will be constructed parallel to State Highway 121
from The Plaza to Denton Tap Road in a dedicated 15 foot wide Utility Easement. His concern
is what will happen if in the future, when the Presbyterian Hospital site is developed, there will
be cut along State Highway 121 and the depth of the waterline may be inadequate. Mr. Keith
Marvin and I spoke on the telephone this morning and he felt that the waterline depth should
be established by the State Highway 121 back of curb elevation and not the existing ground
elevation. Mr. Davis is also concerned about the horizontal location of the 8" waterline. At the
time of the design, we were aware of existing franchise utilities in the 15 foot utility easement.
We tried to best place the waterline in the easement to avoid conflicts, however, we knew that
there was a potential of making field modifications to better locate the waterline. We are also
aware that we are paralleled by a City of Coppell sanitary sewer line and a City of Lewisville
sanitary sewer line and need to stay 9 feet away (outside diameter to outside diameter) from
those existing sanitary lines in accordance with Chapter 317 of the Texas Commission on
Environmental Quality.