DSHW-1995-002830 - 0901a0688013fc12

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TTi^oA^O^ CORPORATION '^^^y.^,.9^'^^yS'^y,
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6 March 1995 fS^O/O^r^ "'"'"'^
V200-FY95-L83
Dennis R. Downs, Executive Secretary-
Utah Solid and Hazardous Waste Control Board
288 North 1460 West
P.O. Box 144880
Salt Lake City, Utah 84114-4880
Dear Mr. Downs:
ATTENTION : Otis Wiilloughby
SUBJECT: Partial Closure Plan M-13 6 Burn Grounds
On 16 March 1995, the 180 day closure period specified in 40
CFR 265.113 for the Partial Closure Plan M-136 Burn Grounds
will expire. Many of the closure activities outlined in the
closure plan have been completed, yet other activities remain.
Those activities remaining to be completed are as follows:
1) Finalize comparison of samples collected within the
area of concern to the background samples.
2) Dispose of the residue from the burn trays and
remove the burn trays.
3) Restore the site by backfilling with natural soils
and regrading to fit surrounding contours.
4) Obtain certification of closure from an independent
professional engineer.
The closure plan states that field work will be performed only
during the dry weather season, typically April through
October. As indicated, there is some field work remaining to
be completed for the closure. It would be advantageous to
excavate and dispose of the residual material when the soil
moisture content is less than it currently is.
Thiokol Corporation requests a 90 day extension of time from
the Division of Solid and Hazardous Waste to complete these
closure activities.
Your consideration of this time extension request is
P.O. Box 6S9. Brigham Cuv. UT 84302-0689 180V 863-35 1 i
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appreciated. If you have any questions in this matter, please
contact me at [phone], or Frank Walker at (801) 863-
5390.
Sincerely,
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J. R. Whimpey, Supervisor
Environmental Compliance