Riverview Estates-CS 960528Johnny Thompson
P.O. Box 1236
Coppell, Texas 75019
P.O. Box 478
Coppell, Texas 75019
214-462-0022
May 28, 1996
Re: Riverview Estates Floodplain Study (25 acres on Sandy Lake Road)
Dear Mr. Thompson:
I have received and reviewed the floodplain study submitted by Ron Morrison on your behalf.
The study has been signed and is ready to process to FEMA for their review. However prior
to submittal, a check in the mount of $280 made payable to the National Flood In~surance
Program should be provided. This is the minimum initial review fee for this study. If any
additional fees are required, FEMA will provide that information to you at the appropriate time.
I would like to bring to your attention that prior to the final letter from FEMA, after the fill has
been completed, compaction tests will be required to meet a minimum of 95 % density.
As we have discussed in the past, the construction of the temporary access from Sandy Lake
Road to the property has created some standing water. Even though it is debatable whether the
water should go east or west from this site, the construction of that temporary access has in fact
created some standing water from that access back to the west toward Riverchase Drive. Once
this fill operation is complete, the access should be removed and the existing borrow ditch along
the south side of Sandy Lake Road graded to provide positive drainage. If the fill operation will
proceed on for some time, I would request that some type of culvert be placed underneath the
temporary access to provide for positive drainage.
Again, the report has been reviewed and signed by the City and is only awaiting the submittal
of a check in the amount of $280 made payable to the National Flood Insurance Program before
it can be processed for approval.
If you should have any questions please feel free to contact me at your convenience.
Sincerely,
Kenneth M. Griff'm, P.E.
Assistant City Manager/City Engineer