MINES
ItltfilANCIAL SUMMARY
United States
Environmental Protection
Agency
Navajo Area Uranium Mines
September 2018

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Accounting Line Project Names/Descriptions
Names
Descriptions
Tronox NAUM (Region 6)
Overall planning and logistical support for Removal activities and settlement implementation, including salary and travel,
and the ground water study.
Tronox NAUM East GSA
Assessment of Tronox mines in the eastern area of Ambrosia Lake to complete an RSE and EE/CA. Includes contracting,
salary, and travel specific to this project.
Tronox NAUM West GSA
Assessment of Tronox mines in the western area of Ambrosia Lake to complete an RSE and EE/CA. Includes contracting,
salary, and travel specific to this project.
Tronox NAUM Central GSA
Assessment of Tronox mines in the central area of Ambrosia Lake to complete an RSE and EE/CA. Includes contracting,
salary, and travel specific to this project.
Tronox NAUM SI8 Mine Residential
Removal
A time critical radon abatement project for a residential structure adjacent to the Section 18 Tronox Mine in Ambrosia Lake.
Includes contracting, salary, and travel specific to this project. Project was completed in EY18 Quarter 1.
Tronox NAUM Section 10
Assessment of the Section 10 Tronox mine in Ambrosia Lake to complete an RSE and EE/CA. Includes contracting, salary,
and travel specific to this project.
Tronox NAUM Section 32 and 33
A joint project with Region 9 to assess the Section 32/33 Tronox mines in the Smith Lake sub-district in the Casamero Lake
area to complete an RSE and EE/CA. Includes Region 6 salary, and Region 6 travel specific to this project.
Tronox Abandoned Uranium Mines
on the Navajo Nation (bankruptcy
settlement)
Tronox NAUM activities (2011 - 2015) prior to the 2015 settlement that included quarterly meetings with Navajo
Nation EPA; settlement implementation planning; accounting and contracting strategy; community involvement;
Tronox portal development, Northern Agency ASPECT data collection, and grants.
Tronox NAUM Cove Transfer Station
Construction activities to mitigate surface erosion at the former transfer area located in the Cove Chapter of the Navajo
Nation, in eastern Arizona.
Tronox NAUM Mesa I Mine
Mesa Mine I Preliminary Site Assessment has been conducted to determine risk to human health and the environment. A
RSE will be conducted in FY 2018.
Tronox NAUM Cove Wash Regional
Assessment
Identify potential areas of concern and sources of contamination, as well as determine the baseline contaminant levels in the
Cove Wash.
Tronox NAUM (Region 9)
Activities included quarterly meetings with Navajo Nation; settlement records review; settlement implementation planning;
Navajo Nation Mines Portal Database; Northern Agency ASPECT Gamma survey; Annual Quarterly reports; Tronox
Northern Agency RSEs; Tronox Northern Agency EE/CAs; Cove Mesa V Main Access Road Improvement/Design; Cove
Mine Access Assessment; Northern Agency Cultural Resources Survey; community involvement; and Navajo Nation grants.
Tronox NAUM Cove Sitewide
Conceptual Model and Data Gaps
Assimilate information from previous studies and actions of the site; research, gather and analyze other existing data
and documents that could be used to develop the conceptual site model; break the site out into investigation areas based
on known information; provide pictorial representations of the site; depict exposure pathways and receptors; provide
recommendations for paths forward for each of the investigation areas; and, suggest general areas for data gap investigations.
Tronox NAUM NE Churchrock
Quivira Mines
Activities at the Northeast Church Rock Quivira Mines include: Repair roads and bridges to allow access to removal sites;
vent hole removal action; the Engineering Evaluation/Cost Analysis; and discuss the removal options with Navajo Nation,
community members, and other stakeholders.
2
FY 2018 3rd Quarter Financial Summary

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FY 2018 Special Account Activity for Tronox/Anadarko Funds for NAUM and Quivira Mine Site - 3rd Quarter FY 2018

Special
Account

Total
Budget
Beginning
FY 2018
Total
Disbursed
Beginning
FY 2018
FY 2018
Budget
Increase/
Decrease
Open
FY 2018 Disbursed
Available
to Commit,
Obligate,
or Disburse
Region
Special Account Name
Commitments
and ULOs
1st
Quarter
2nd
Quarter
3rd
Quarter
Total
FY 2018
Region 6 NAUM Special Accounts
06
A6KZ
Tronox NAUM (Region 6)
$4.3
$2.4
$0.7
$0.2
$0.0
$0.1
$0.1
$0.2
$2.1
06
A6FK
Tronox NAUM East GSA
$2.3
$1.8
$0.0
$0.1
$0.0
$0.0
$0.0
$0.0
$0.4
06
A6FP
Tronox NAUM West GSA
$1.8
$1.4
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
$0.3
06
A6NS
Tronox NAUM Central GSA
$2.1
$0.5
$0.0
$0.0
$0.0
$0.0
$0.2
$0.2
$1.4
06
A6PE
Tronox NAUM S18 Mine Residential Removal
$0.1
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
$0.1
06
A6PK
Tronox NAUM Section 10
$0.2
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
$0.1
06
A6QC
Tronox NAUM Section 33
$0.1
$0.0
$0.5
$0.0
$0.0
$0.0
$0.0
$0.0
$0.5
Subtotal Region 6 NAUM Special Accounts
$10.8
$6.2
$1.3
$0.3
$0.0
$0.2
$0.4
$0.6
$4.9
Region 9 NAUM Special Accounts
09
099R
Tronox Abandoned Uranium Mines on the
Navajo Nation (bankruptcy settlement)
$3.4
$3.2
$0.0
$0.1
$0.0
$0.0
$0.0
$0.0
$0.1
09
09XL
Tronox NAUM Cove Transfer Station
$4.6
$3.2
$0.0
$0.2
$0.2
$0.0
$0.0
$0.3
$1.0
09
09XM
Tronox NAUM Mesa I Mine
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
09
09XN
Tronox NAUM Section 32
$2.0
$1.5
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
$0.5
09
09XP
Tronox NAUM Section 33
$0.6
$0.1
($0.5)
$0.0
$0.0
$0.0
$0.0
$0.0
$0.0
09
A979
Tronox NAUM Cove Wash Regional Assessment
$4.1
$2.6
$0.0
$0.8
$0.2
$0.1
$0.0
$0.3
$0.4
09
A982
Tronox NAUM (Region 9)
$890.7
$2.8
$19.2
$6.7
$0.5
$0.9
$2.0
$3.3
$897.1
09
A9AG
Tronox NAUM Cove Sitewide Conceptual
Model and Data Gaps
$2.5
$0.3
$0.0
$0.7
$0.1
$0.2
$0.1
$0.3
$1.2
09
A9BH
Tronox Navajo Area Uranium Mines Mesa II
N/A
N/A
$0.1
$0.0
N/A
$0.0
$0.0
$0.0
$0.1
09
A9BJ
Tronox Navajo Area Uranium Mines Mesa V
N/A
N/A
$0.3
$0.2
N/A
$0.0
$0.0
$0.0
$0.1
Subtotal Region 9 NAUM Special Accounts
$907.9
$13.7
$19.1
$8.6
$0.9
$1.2
$2.2
$4.3
$900.5
Subtotal All NAUM Special Accounts
$918.6
$19.9
$20.4
$8.9
$0.9
$1.4
$2.5
$4.8
$905.4
Quivira Mine Special Account
09
09QM
Tronox NAUM NE Churchrock Quivira Mines
$91.6
$3.9
$2.0
$1.0
$2.0
$0.4
$0.1
$2.6
$86.0
Total All Special Accounts
$1,010.2
$23.8
$22.4
$10.0
$3.0
$1.8
$2.6
$7.4
$991.4
Interest earned through January 31, 2018 = $17,818,059.
Navajo Area Uranium Mines
3

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Tronox Total Committed, Obligated, or Disbursed Breakout by Cost Category
February 2011 through June 2018
Total Committed, Obligated, or Disbursed ($41.2 Million) by Category
$ in Millions
$991.4 Million
Remaining
Site Travel
$1.0 Million, 2%
$41.2 Million, 4,2%
Spent to Date
Payroll
$5.5 Million. 14%
Grants
\ $1.5 Million, 4%
Expenses
$0.1 Million, 0%
All $ in Millions as of 1/2/18 from EPA's Compass Business Objects Reporting.
Commitments are amounts reserved for obligation in EPA's financial system but not yet obligated.
Unliquidated obligations (ULOs) are amounts obligated but not yet disbursed.
Disbursed amounts are payments that have been made.
Numbers may not add due to rounding.
Contracts
$33.1 Million, 80%
4
FY 2018 3rd Quarter Financial Summary

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Navajo Area Uranium Mines

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For More Information
(USEPA Contacts)
USE PA Region 6
Kevin Shade
Grants Mining District Coordinator
USEPA, Region 6, 6SF-TR
1445 Ross Avenue
Dallas, TX 75202-2733
p: (214) 665-2708
f: (214) 665-6660
shade. kevin@epa .gov
USEPA Region 9
Chip Poalinelli
Tronox NAUM Coordinator
USEPA, Region 9, SFD 6-2
75 Hawthorne Street
San Francisco, CA 94105
p: (415) 972-3390
f: (415) 947-3526
poalinelli.edwin@epa.gov
4% (rTlA	States
Environmental Protection
* W lt~=il m \Agency
Navajo Area Uranium Mines
September 2018

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