Stratford Manor-LR020128Dowdey~ Anderson & Associates, Inc.
5225 Village Creek Dr., Suite 200
Piano, Texas 75093
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DOWDIz-Y~ ANDERSON AND ASSOCIATES, INC.
CIVIL ENGIN[ERS
5225 VILLAGE CREEK DRIVE SUITE 200
PIANO, TEXAS 79093
(972) 931-0694 FAX (972) 931-9538
TO:
FROM:
MEMO FOR R.ECORD
1/24/02
Mr. Larry Davis, Construction lnsp
City of Coppell
William A. Anderson, P.E.
f i atrora Manor Pavement Hearl.g (Lot 6, BIo~I;~)
JO, NO. 97-00z
I have reviewed the geotecnmcal investigation prepared by Alpha Testing, [nc.
According to the report's borings, thc holes were dry. !'~e depths of the borings were 1 O'
to 14'.
The geotechnical repOrt indicates that therc is swelling beneath the pavement. I concur
with the findings of the geoteehnical engi~eer regarding b_is conclusions and
recommendations.
For the record, the site in question is not at a sag location and is in the vicinity of the
water services. I cannot absolutely assure you that there is or is not a water leak, or that
ground water is or is not the cause.
Rodman Paving, Inc., stated in their January 23, 2002 letter that the water source is
ground water. I fred this inconclusive. Additionally, the adjacent property owners
apparently irrigate their yards significantly. I cannot determine if this influences the issue.
CONCLUSION:
I recommend that you remove and replace thc pavement, checking for a water leak in this
process. Additionally, I recommend that you remove any saturated material and follow
Alpha Testing, Inc.'s recommendations. The only question that remaius is to the depth of
the proposed trench drains. I feel that this should be reviewed, due to the variable depth
etc., of ground water.
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