ST8402-CS 881205December 5, 1988
DEE;'- 5 1988
Ginn, Inc., Consulting Engineers
17103 Preston Road
Suite 100, LB-118
Dallas, Texas 75248
Attn: John C. Karlsruher, P.E.
Project:
Denton Tap Road Improvements From Sandy Lake
To Denton Creek
Project 379
RE
: City of Dallas 30" Water Line
Dear John:
While attempting to install lateral D-22 on Monday, November
28, 1988, our subcontractor, American Developers, uncovered
the 30" City of Dallas Water Line. It's at offset 167+32
and on the plans shows to be approximately at 44' right
of centerline. We have a field shot that shows it to be
at 42.7' right of centerline. The horizontal location is
not a problem; however, the vertical location of the 30"
water line on the plans shows to be at an elevation of 488.5
at 44' right of centerline. The actual field ties show
the 30" water line to be at an elevation of 492.21 at 42.7'
right of centerline. This interferes directly with the
lateral pipe and there would only be three or four tenths
clearance below the bottom of paving at this station.
with the existing drainage structures and existing
intersection at Sandy Lake, there may be no recourse other
than that the City of Dallas lower their 30" water line.
Per our most recent schedule, we show Phase II excavation
to start in the third week of January, 1989 and we show
Phase II subgrade preparation to start in the second week
of February, 1989. We have some time to solve the problem,
but that window will close rapidly. It is L. H. Lacy's
intention to pave Phase II on the North Project before we
pave Phase II on the South Project. As we have stated before,
it is our intention to finish the North Project as soon
as possible. This will allow us to concentrate our efforts
on the completion of the South Project.
L. H. Lacy Company
General Contractors
214/357-0146
"Oualily Coftstruclion for over 65 Years"
10888 Shady Trail
P.O. Box 541297
Dallas, Texas 753§4-1297
TAP tiDAL' I~PROVEMEr4TS PF~OJECT - SAr:i.~¥ L~KE ltl DENION CREEK
i?~' + 05 ~0.00 455.80 ~5~.00
lB/ + 57 40.00 ~51,58
,u~ ~ 54 ~O. O0 45g,~0 ~59,70
182 ~ ~1 40.00 40.OL, 459.85 459.85
l~l ~ 02 40.*~0 462.11
· 3B. ~0 40, O0 466, B2 486. B2 4~4,5L~
~'.'. ~ 77 ~o. O0 470,44 467.~0
17q + ~0 40,00 416,1~ 474,50
i~"*~.e" 42.70 44.00 492.21 492.21 4BU.50
16A ~ 58
I.BO LAI
10.42~ LAT D-4
2.,~2
2.~4
L~I O-B
LnT D-14
LAT O-16
LAI D-22
P~VINB liE-Iii
I - ,,NOW,., ELEVAT!ON AS SHOWN ON PLANS
WIIH [HE !iEt+E.N~I'EO INFO~,~'IILIN t.t~lLflAL..q C,-4, L)"I4, & 0-16 CfJULI~ HAVE II~JLflFEI~flENCE.
L~I,,_N,~. O-z,. ~EFIN~IELI' II~S AN IN1LtiF£~RENCF P~UBLEM.
i;JE I~MIN~L CLEARANCE IN THE ~:-22 :nlE~tt~L ArEA IS i)EI-'!;~/ELY ~ PI;~O~LEM.
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