WA0002-CS041017DALLAS COUNTY
October 7, 2004
Jay Louy, Principal
North Texas Contracting, Inc.
P.O. Box 468
Keller, TX 76244
Attention: Vem Franklin, Estimator
CDBG FY 2002 Coppell Fire Hydrants & Water Mains Project
Golden Triangle Mobile Home Park
Construction Contract- Contrnet Time ond Flowoble Bneld'dl Costs
Dear Mr. Louy,
Per my discussions with Veto Franklin, Project Manaser of your staff, Contract Timm stopped on
Wednesday, August 25, 2004, for the referenced project. Wi~h the Conunence of Construction date
being July 6, 2004, the respective Elapsed Project Time is 51 Calendar Days out of 60 Calendar Days.
Also, atlached are Team Consul~mts' concrele slrength reports for Water Line "W-2" Flowable Backfill
which are briefly summarized ns follows:
~ ~ Break
$+~0 August 2, 2004 15-Day
2+50 August 3, 2004 14-Day
2+00 August 4, 2004 T-Day
1408 August 4, 2004 13-Day
Ave. Strength 28-Day l;)atg ~
274 psi August 30, 2004 279 psi
245 psi August 31, 2004 270 psi
100 psi September l, 2004 185 psi
942 psi September 1, 2004 1,139 psi
Only one (1) out of four (4) locations met / exceeded the required minimum 28-day compressive
sUen~h of 500 psi. As stated in the August 23, 2004 leU~r from the Dallas Counly Publio Works
Department to the City of Coppell reoarding same, a reduction in the Total Unit Price for Bid Item No.
I-7, Elownble Backfill, shall be negotinred. Please submit the raw material cost (prior to your overhead
and profit eom) of the Flowable Backfill by documentation to InMate suoh negutlotionm.
We look forward to a proper resolution of this outsumding item for the CDBO FY 2002 Coppell Fire
Hydrants & Water Mains project. Should you have any ciucstions, please feel free to call me.
Sincerely
Abel V. Salda~a, P.E.
Project Manager
411 Elm Street, 4'h Floor Dallas, Texas 75202 214-653-7151 Fax 214-653.6445
Mr. Louy
October 7, 2004
Pa~e Two
Al~a~hitlenls
Donald R. I.{olzw~, P.E., Direclor, DaIIM Co~mty Public Worlu
Alberta Blair Robinson, P.E.~ Assistant Director, D~llas Count)' Public Works, Engineering & Conltmctlon DIv,
Rick Lo~ssberL Director, Dallas County Pit, ming & Dcvelopmem
Al DomiMuez, Senior Constzuction Inspector, Dallas Co~ty Public Works
Kenneth Grifl'm, P.E., D~ctor, En~lneerln~ end Public Works, City ot'Coppell
Dave Pre. jean, Senior V.P., Operations ~ervices & SWAT D~tor, Affordable Residential Communities
word fll~ CoppoJi~FHs&WmerMeins,,NoTxCo~a~tlnl Con~Tlmc&Plowsbl,~B(,~kfillCo~, 10072004
TEAM Consultants, Inc.
Geotechnical, Environmental, Construction Materials Testing
CONCRETE STRENGTH REPORT
(ASTM C-39), (ASTM C-78), (AS'I'M C-298) OR (TEX-4I 8-A), (TEX-d48-A)
Mr. Able Saidana, P,E. DATE: 09/04/2004 REPORT NO.: I/6
Dalla~ County Public Worl~ JOB NO.: 045086
al 1 Elm Street. 4m Floor
Della~, TX 45202
PROJECT: FY2002 Golden Triangle Mobil Home Park
Fire Hydrants and Water Mains
Orant No. B.02-UC-480003
Cyl er Slump(la.) Alt (%) Streu~h"' (l~ell
Beam Date Date ASTM ASTM 28-Day
~o. LOcation Break Made (C-143~ (C-23D T-Day 2f-Day 'So~s.
1- A Backfill for water utilities, 08/I 1 08/0a .... (100) --
B sra. 2+00 09/01 08/04 180
C 09/01 08/04 190
'L:
REMAIt]~: Flowable Fill
Iff
2~70 $. Wulton ~dker, Suite 101 Dallm', TX 75211
3101 Plett.~attt ~tlley Sidle I01 Adi.gtmt. TX 76015
By:
1214) 331-4395
~817) 467.3500
TEAM Cousultauts,
Tifffmy WoOley
Fox (214) 351.4458
Fax (817) 46~.9920
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