DSHW-2017-000411 - 0901a0688069f293

DSHW-2017-000411 195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144880 • Salt Lake City, UT 84114-4880
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

GARY R. HERBERT
Governor

SPENCER J. COX
Lieutenant Governor
Department of
Environmental Quality

Alan Matheson
Executive Director

DIVISION OF WASTE MANAGEMENT
AND RADIATION CONTROL
Scott T. Anderson
Director

January 20, 2017

George Gooch, Manager
Environmental Services
ATK Launch Systems – Promontory
P.O. Box 707
Brigham City, UT 84302-0707

RE: Well H-4 Colloidal Borescope Investigation Report
ATK Launch Systems – Promontory Facility
UTD009081357

Dear Mr. Gooch:

The Division of Waste Management and Radiation Control has completed its review of the Borescope
Investigation Report (April, 2016). ATK and Geotech Environmental Equipment conducted the
borescope investigation at well H-4 and submitted the report in response to the Division’s concern
regarding the extent of groundwater contamination and flow direction in the area. This issue was
discussed as a finding in the 2014 Operation and Maintenance (O&M) Inspection.

The report indicates that a preferential pathway for groundwater flow direction in well
H-4 was not identified. Therefore, it appears that flow and plume migration to the southwest along lake
sediments is still possible.

ATK sampled piezometer BC-3, which is located south, southwest of well H-4 in the Fall of 2015 and
the Spring of 2016 without detecting perchlorate. However, perchlorate was detected at 10 ug/L in BC-
3 in the Spring of 2015. If groundwater in the area does flow southwest, another well exists that is in a
fairly good location to detect a plume migrating from well H-4. This well is shown on the Lampo
Junction Quadrangle Map, USGS 7.5 Minute Series and is located at Township 11 North, Range 6 West
in the Southeast ¼ of the Northeast ¼ of Section 1 at an elevation of 4,300 feet. It is approximately two
miles southwest of well H-4. The owner and potential uses of the well are unknown.

After discussing this well with my staff, Paul Hancock has agreed to look into the ownership of the well
and to try and obtain access to determine if the well is viable for collecting groundwater samples. If the

(Over)

owner will allow access and it is determined the well can provide representative groundwater samples,
the Division would like to have the well sampled in the Spring of 2017. If this can be achieved, the
Division believes the ongoing monitoring of the well along with BC-3 may allow the extent of
groundwater contamination in the area southwest of well H-4 to be adequately defined.

Please notify the Division at your earliest convenience regarding the status of the identified well. If you
have any questions, please call Jeff Vandel at [phone].

Sincerely,

Scott T. Anderson, Director
Division of Waste Management and Radiation Control

STA/JV/jr

c: Grant Koford, EHS, Environmental Health Director, Bear River Health Department
Lloyd C. Berentzen, MBA, Health Officer, Bear River Health Department
Moye Lin, EPA Region VIII
Paul Hancock, ATK Launch Systems
Alan Lee, ATK Launch Systems