DSHW-2006-007062 - 0901a068801618be

David P. Gosen, P.E.
Director, Environmental Services
ATK Thiokol Inc. – Promontory
P.O. Box 707
Brigham City, UT 84302-0707

RE: Temporary Authorization Request to Store Reactive Waste Received From Off-Site at the M-136 Open Burn Grounds, Tracking #06.02715
ATK Thiokol Inc. – Promontory Facility, EPA I.D. #UTD009081357

Dear Mr. Gosen:

The Utah Division of Solid and Hazardous Waste has completed a review of the Temporary Authorization (TA) request identified above. Based on this review, it has been determined that
the TA request contains the necessary information required by R315-3-4.3 [40 CFR 270.42(e) incorporated by reference] and that the request is necessary to allow treatment or storage
in tanks or containers and to facilitate changes to protect human health and the environment. Based on these findings, the TA request is hereby approved for up to 180 days or upon approval
of the Storage Permit modification to add container storage at the M-136 Burn Grounds, which ever comes first.

As provided by this TA, ATK Thiokol Inc.- Promontory (ATK – Promontory) will be allowed to store reactive waste received from off-site in containers at the M-136 Burn Grounds. The
reactive hazardous waste may be stored in burn trays for up to 14 days prior to treatment by open burning. The waste must be stored as described in your letter dated August 29, 2006
and in accordance with the State of Utah Hazardous Waste Management Rules. The M-136 Burn Grounds shall be inspected under this TA in accordance with the weekly off-site waste storage
inspection form.

If ATK - Promontory determines that different storage methods (other than those currently approved) are necessary, please follow the procedures for requesting approval of the different
methods. If you have any questions, please contact Jeff Vandel at 538-9413.

Sincerely,

ORIGINAL DOCUMENT SIGNED BY DENNIS R. DOWNS ON 9/19/06

Dennis R. Downs, Executive Secretary
Utah Solid and Hazardous Waste Control Board

DRD/JV/tm

c: Gene Curtis, ATK Thiokol Inc.
Lloyd Berentzen, Deputy Director, Bear River Health Department
Terry Brown, US EPA Region 8

September 18, 2006
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September 18, 2006

TN200601037

288 North 1460 West • PO Box 144880 • Salt Lake City, UT 84114-4880 • phone [phone] • fax [phone]
T.D.D. [phone] • www.deq.utah.gov

State of Utah

Department of Environmental Quality

Dianne R. Nielson, Ph.D.
Executive Director

DIVISION OF SOLID AND HAZARDOUS WASTE
Dennis R. Downs
Director

JON M. HUNTSMAN, JR.
Governor

GARY HERBERT
Lieutenant Governor