DSHW-2003-003768 - 0901a0688013dfcc

ATK
ALLIANT TECHSYSTEMS
Thiolcol Propulsion Corp. Tel [phone]
P.O. Box 707 Fax [phone]
May 22. 2003 Brigham City, UT 84302-0707
8200-FY04-ST013
Dennis R. Downs, Executive Secretary f\ [^ V.^ j y^ \ V C2 L/
Division of Soiid and Hazardous Waste Control Board /f/l'A/^ D&A V^I^BD
Department of Environmental Quality MAV 2 2- 2(10}
P. O. Box 144880 QZ, 0\$0^
Salt Lake City, Utah 84114-4880 DWisiolf oToonu i Razu.uouS Wast
"Htl Wtnartmo"! o' Crwiimnmrinlil Cm'
Dear Mr. Downs
Subject: Submittal of Statistical Evaluation of Soil Sampling Data Collected from
Photographic Waste Discharge Sites, ATK Thiokol Propulsion -
Promontory Facility, # UTD009081357
On April 29, 2003, Thiokol Propulsion and EarthFax Engineering met with Brad
Maulding, David Larsen, and Jeff Vandel of your staff, to discuss sampling data
necessary to characterize soil contamination at our Photographic Waste Discharge Sites.
We have evaluated the adequacy ofsamples submitted to the Division as part ofthe
photographic site closure report using USEPA methods DataQUEST and ProUCL, and
conclude that samples were sufficient to fully characterize soil contamination at the sites
for closure. Please review the attached report Evaluation of Remediation Data Collected
from Thiokol Photographic Waste Discliarge Sites. Ifthe Division substantially agrees
with these conclusions, we will submit risk assessments for closure ofthe HWHVIU sites
this summer. These closures will exclude groundwater contamination and SWMU
related contamination. These issues will be addressed separately, as part ofthe Post-
Closure Permit, or as part ofthe RFI.
Thank you for your prompt consideration ofthis request. Ifyou have questions or need
additional information, please call John Holladay at 863-6895.
Sincerely
cw^^"^ >C/2^vUDt.'<^
Paul V. Hancock, Manager
Environmental Remediation
Enclosure