BIA_Chinle_Land_Transfers_ASTM_Phase_I_ESA_11-2022.pdf

BUREAU OF INDIAN AFFAIRS LAND

TRANSFERS

PARCELS A-1-1, A-1-2, B-1-2, E-1, G-1, AND P-1

CHINLE, APACHE COUNTY, ARIZONA

PHASE I ENVIRONMENTAL SITE ASSESSMENT

October 28, 2022 iiná bá, Inc. Project No.: 22-052-03 BIA Contract No: 140A0922P0041

DRAFT

PARCELS A-1-1, A-1-2, B-1-2, E-1, G-1, AND P-1

CHINLE, APACHE COUNTY, ARIZONA

PHASE I ENVIRONMENTAL SITE ASSESSMENT

TABLE OF CONTENTS

Page EXECUTIVE SUMMARY ................................................................................................. i

1.0 INTRODUCTION

1.1 Objective

1.2 Scope of Services

1.3 Limitations and Exceptions……………………………………………………. 2

1.4 User Reliance…………………………………………………………………… 2

2.0 SITE DESCRIPTION

2.1 Location and Legal Description:

2.2 Site and Vicinity General Characteristics

2.3 Current Uses of Subject Property

2.4 Description of Improvements on Site

2.4.1 Structures

2.4.2 Roadways and Boundaries

2.4.3 Potable Water Supply

2.4.4 Sewage Disposal System

2.4.5 Heating/Cooling System

2.5 Current Uses of Adjoining Properties

3.0 USER PROVIDED INFORMATION

3.1 Title Records

3.2 Environmental Liens or Activity and Use Limitations

3.3 Specialized Knowledge………………………………………………………….6

3.4 Commonly Known or Reasonably Ascertainable Knowledge

3.5 Valuation Reduction for Environmental Issues

3.6 Owner, Property Manager, and/or Occupant Information

3.7 Reason for Performing Phase I ESA

4.0 RECORDS REVIEW

4.1 Standard Environmental Record Source

4.2 Physical Setting Source(s)

4.2.1 Geological Conditions

4.2.2 Soil Conditions

4.2.3 Surface Water and Groundwater Conditions

4.2.4 Wetlands

4.2.5 Public Wells and Wellhead Protection Areas

4.3 Historic Use Information on the Subject property

4.4 Findings from Previous Reports

4.5 Historic Use Information on Adjoining Properties

5.0 SITE RECONNAISSANCE

5.1 Methodology and Limiting Conditions

5.2 General Site Setting…………………………………………………………….22

5.3 Interior Observations

5.4 Exterior Observations

5.5 Hazardous Material or Petroleum Product Use

5.6 Storage Tanks

5.7 Odors

5.8 Pools of Liquid

5.9 Drums

5.10 Hazardous Substance and Petroleum Products Receptacles

5.11 Unidentified Substance Containers…………………………………………..24

5.12 PCBs

5.13 Stains or Corrosion

5.14 Drains and Sumps

5.15 Pits, Ponds or Lagoons

5.16 Stained Soil or Pavement

5.17 Stressed Vegetation

5.18 Solid Waste Disposal

5.19 Wastewater and Stormwater

5.20 Unnatural Fill or Grading

5.21 Trash On-Site

5.22 Asbestos

5.23 Lead-based Paint

5.24 Visual Observations of Adjoining Properties

6.0 INTERVIEWS

6.1 Interview with Owner

6.2 Interview with Site Manager

6.3 Interview with Occupants

6.4 Interview with Local Government Officials

6.5 Interview with Others

6.6 Data Gaps

7.0 FINDINGS

8.0 CONCLUSIONS

9.0 OPINION

10.0 DEVIATIONS

11.0 SIGNATURES OF ENVIRONMENTAL PROFESSIONAL(S)

APPENDICES

Appendix 1 – Maps Appendix 2 – EDR® Documentation Appendix 3 – Photographic Record Appendix 4 – Research Documentation Appendix 5 - Resumes

LIST OF ACRYONYMS

ACM – Asbestos-Containing Material ADOT – Arizona Department of Transportation ADWR – Arizona Department of Water Resources APS – Arizona Public Service (Company) AST – Aboveground Storage Tank ASLD – Arizona State Land Department ASTM – American Society for Testing and Materials BOR – Bureau of Reclamation CERCLIS – Comprehensive Environmental Response, Compensation, and Liability information

System CFR – Code of Federal Regulations EDR® – Environmental Data Resources e.g. – exempli gratia (“for example”) etc. – et cetera (“and so on”) EPA – Environmental Protection Agency ESA – Environmental Site Assessment FEMA – Federal Emergency Management Agency FINDS – Facility Index System ID – Identification i.e. – id est (“that is”) KOA – Kampgrounds of America L.L.C. – Limited Liability Company LQG – Large Quantity Generator LUST – Leaking Underground Storage Tank Ma – Million years NLP – Navajo Land Department NPL – National Priority List NRCS – Natural Resources Conservation Service NTUA – Navajo Tribal Utility Authority PCB – Polychlorinated Biphenyls PVC – Polyvinyl Chloride REC – Recognized Environmental Condition RCRA – Resource Conservation and Recovery Act SQG – Small Quantity Generator U.S. – United States USDA – United States Department of Agriculture USEPA – United States Environmental Protection Agency USGS – United States Geological Survey UST – Underground Storage Tank

PARCELS A-1-1, A-1-2, B-1-2, E-1, G-1, AND P-1

CHINLE, APACHE COUNTY, ARIZONA

October 2022

EXECUTIVE SUMMARY

This report presents the results of a Phase I Environmental Site Assessment (ESA) conducted on properties located along Navajo Route 7 (Main Street) in Chinle, Apache County, Arizona (Townships 5N and 32N, Ranges 10 West and 26E, Sections 16 and 29, G.S.R.M), referred to herein as the “subject properties”). The subject properties consist of six (6) separate parcels of land (A-1-1 at 50.618 acres; A-1-2 at 11.431 acres; B-1-2 at

3.930 acres; E-1 at 14.619 acres; G-1 at 1.541 acres, and P-1 at 2.137 acres). iiná bá, Inc, (iiná bá) has been retained by the Bureau of Indian Affairs (BIA) Navajo Regional Office (NRO) to perform this ESA to identify any recognized environmental conditions (RECs) on the above-referenced properties that may pose risk to human health or the environment. The subject properties are Navajo Trust Lands that are to be relinquished back to the Navajo Nation. This ESA was written in accordance with the requirements of the American Society for Testing and Materials (ASTM) Standard E 1527-21 and the United States Environmental Protection Agency (USEPA) All Appropriate Inquiry Rule

40CFR312.1.1.

Through our reconnaissance and research of the subject property, our study concluded the following:

Parcels A-1-1 and A-1-2:

The discarded sections of ACP should be tested and confirmed for the presence of asbestos fibers as they can be considered an REC.

The suspect building materials contained within the various illicit debris dump areas should be tested and confirmed for the presence of asbestos fibers as they can be considered an REC.

NAVAJO GAMING ENTERPRISE, FORMER ROLLING MESA, LLC PROPERTY, NM – UPDATED PHASE I ESA ii

The abandoned building (#135) containing building materials that are suspect for containing asbestos fibers should be tested and confirmed present or absent prior to being disturbed (demolished).

The sheet flooring product at the burned building site on Parcel A-1-2 should be tested for the presence of asbestos fibers prior to the cleanup of this structure.

The improperly abandoned NTUA natural gas distribution risers should be properly retired (abandoned) as they can be considered an REC (safety hazard).

Parcel B-1-2:

There are no RECs identified with this parcel. However, the minor occurrence of residual waste items left onsite by others should be removed and properly disposed of as applicable.

Parcel E-1:

This parcel in general is not considered an REC but should be properly and completely retired (abandoned) by clearing and grubbing and infilling to the surrounding natural land surface and compacted to restore the site to an original condition.

Parcels G-1 and P-1:

Any suspect building materials on the two (2) out-of-service (abandoned) water supply wells should be tested and confirmed to determine the presence or absence of hazardous materials (asbestos and lead).

Both of the abandoned water supply wells should be properly abandoned (with associated structures removed) in accordance with applicable regulations as they can be considered an REC.

The minor occurrence of illicit dumping on Parcel P-1 should be removed and disposed of in accordance with applicable regulations as it can be considered an

REC.

PARCELS A-1-1, A-1-2, B-1-2, E-1, G-1, AND P-1

CHINLE, APACHE COUNTY, ARIZONA

October 2022

1.0 INTRODUCTION

conducted on properties located along Navajo Route 7 (Main Street) in Chinle, Apache County, Arizona (Townships 5N and 32N, Ranges 10 West and 26E, Sections 16 and 29, G.S.R.M), referred to herein as the “subject properties”). The subject properties consist of six (6) separate parcels of land (A-1-1 at 50.618 acres; A-1-2 at 11.431 acres; B-1-2 at

3.930 acres; E-1 at 14.619 acres; G-1 at 1.541 acres, and P-1 at 2.137 acres). iiná bá, Inc, (iiná bá) has been retained by the Bureau of Indian Affairs (BIA) Navajo Regional Office (NRO) to perform this ESA to identify any recognized environmental conditions (RECs) on the above-referenced properties that may pose risk to human health or the environment. The subject properties are Navajo Trust Lands that are to be relinquished back to the Navajo Nation. This ESA was written in accordance with the requirements of the American Society for Testing and Materials (ASTM) Standard E 1527-21 and the United States Environmental Protection Agency (USEPA) All Appropriate Inquiry Rule

40CFR312.1.1.

1.1 Objective

The purpose of this ESA is to render an opinion regarding the presence of RECs within the subject properties that pose a threat to either human health or the environment. Such conditions may indicate an existing release, a past release, or a potential threat of a release of hazardous substances (solids, liquids, or gases) or petroleum products into the environment. The investigative procedures and reporting format used herein conforms to the requirements of the American Society for Testing and Materials (ASTM) Standard E 1527-21 and the United States Environmental Protection Agency (USEPA) All Appropriate

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 2

Inquiry Rule 40CFR312.

1.2 Scope of Services

A Phase I ESA is a research and reconnaissance-level review of a property and the surrounding site to identify potential environmental conditions that may indicate the presence of a release or threat of release of hazardous substances or petroleum. The assessment is largely dependent on direct observation of site conditions, inquiries into previous ownership and uses of the property, and reviews of reasonably and readily available federal, state, and local environmental records. The Phase I ESA Scope of Services for the subject properties included:

• Site history development: This entails a review of the readily available history of the subject property’s ownership, use, and potential environmental issues based on available information obtained from interviews with persons knowledgeable of the site.

• Record searches at appropriate federal, state, and local agencies providing readily available information pertaining to possible environmental conditions at or in the vicinity of the subject properties. This includes the subject property and properties within an appropriate minimum search distance.

• Review of readily available historical sources such as Sanborn Fire Insurance Maps®, aerial photographs, Beers Atlas, and the Mannings Directory.

• A site reconnaissance to observe, document, and photograph subject property operations, property conditions, and signs of potential environmental liabilities, including asbestos and lead-based painted surfaces.

1.3 Limitations and Exceptions

All of the subject properties were inspected during the site visits. There are no recognized Data Gaps associated with this document that would result in a limitation regarding the use of this report. Further discussions regarding the level of due diligence performed under this ESA effort follow in the sections below.

1.4 User Reliance

This report was prepared solely for the use of the BIA. The conclusions provided by iiná bá in this report are based solely on the information referenced or contained within this document. While we are unaware of any facts or circumstances that would cause us to suspect that the conclusions drawn herein are incorrect or misleading, it is possible that additional information could become available that would require refinement or

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 3

modifications of our conclusions. We have made no assumptions regarding the potential presence or absence of RECs and have provided conclusions that are well within the realm of industry standards for this type of investigation. This report has been prepared in general accordance with ASTM E 1527-21 and the USEPA All Appropriate Inquiry Rule.

2.0 SITE DESCRIPTION

2.1 Location and Legal Description:

The subject properties are generally located off or along Navajo Route 7 (Main Street) in Chinle, Arizona on the Navajo Indian Reservation. The subject properties consists of six

(6) separate parcels of land (A-1-1 at 50.618 acres; A-1-2 at 11.431 acres; B-1-2 at 3.930 acres; E-1 at 14.619 acres; G-1 at 1.541 acres, and P-1 at 2.137 acres) totaling 84.28 acres. A United States Geological Survey (USGS) topographic maps (Chinle, Arizona;

1982, Provisional Edition) and orthophotographic maps depicting site location and layout are included in Appendix 1. The approximate boundaries of the subject properties are shown on the orthophotographic maps in Appendix 1.

2.2 Site and Vicinity General Characteristics

The subject properties are located within the Chinle community development area along or off Navajo Route 7 (Main Street) in an area that is mixed commercial and residential in nature. The topography of all of the parcels is relative flat and level at an approximate topographic elevation of 5,500 feet above mean sea level (MSL). Parcel A-1-1 contains a small ridge that rises in elevation to approximately 5,600 feet MSL. Photographs depicting the current characteristics of the subject and surrounding properties are included in Appendix 3.

2.3 Current Uses of Subject Properties

The subject parcels have a mixed property use as cited below:

A-1-1: Residential (minor) and commercial (water tanks), mainly vacant.

A-1-2: Residential (minor) and vacant land (former residential).

B-1-2: Open, undeveloped, vacant land.

E-1: Former wastewater lagoons, currently vacant.

G-1: Mixed use (commercial) and undeveloped, vacant.

P-1: Vacant, undeveloped.

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 4

2.4 Description of Improvements on Site

2.4.1 Structures

There are currently structures located on Parcels A-1-1, A-1-2, G-1, and P-1.

Photographs of the subject properties are included in Appendix 3.

2.4.2 Roadways and Boundaries

All of the subject parcels can be initially accessed by Navajo Route 7 (Main Street). Parcel A-1-1 is partially bounded on the east by County Road 521 and Parcel A-1-2 can be accessed by County Road 102. Parcel B-1-2 is also bounded by Navajo Route 27 on the east and Hopi Drive on the south. These roadways can be seen on Figures 2 through 5 in Appendix 1.

2.4.3 Potable Water Supply

Those occupants on parcels that are served by water comes from a municipal potable water source provided by the Navajo Tribal Utility Authority (NTUA). The source for the water supply is a network of water supply wells within the community drawing water from both the alluvial aquifer and bedrock aquifer.

2.4.4 Sewage Disposal System

Those occupants on parcels that require sewage disposal is provided from a municipal system owned and operated by NTUA. In addition, Parcel E-1 is an abandoned, out-of-service, two-cell sewer lagoon system that once provided sewage disposal to multiple locations nearby.

2.4.5 Heating/Cooling System

There are limited, occupied structures within the various parcels that would require heating or cooling. Those that were observed included roof-top mounted swamp coolers and some window air conditioners. Heating was either by electric furnaces or natural gas furnaces.

2.5 Current Uses of Adjoining Properties

The adjoining properties to the subject parcels have a mixed property use as cited below:

A-1-1: Commercial/residential (east), residential/vacant (north), residential (west), commercial (south).

A-1-2: Residential/vacant (north), vacant land (east), residential (south), open/vacant (west).

B-1-2: Residential (east), commercial/vacant (south), vacant (west), commercial/office (north).

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 5

E-1: Vacant/open/undeveloped in all directions.

G-1: Commercial (west), open/undeveloped (north), open/undeveloped (east), open/undeveloped (south).

P-1: Open/vacant/undeveloped (north, east, south), Partial development (commercial) west.

3.0 USER PROVIDED INFORMATION

3.1 Title Records

EDR® conducted a property tax map search for the subject properties. The results of these searches are included in Appendix 2. Since all of the parcels are Navajo Trust Lands, there are no actual (individual) title records.

3.2 Environmental Liens or Activity and Use Limitations

EDR® conducted an environmental lien search on the subject properties to identify any cleanup liens or other activity and use limitations, such as engineering controls and institutional controls. Their search did not identify any environmental liens or other activity and use limitations on the subject property (see Appendix 2).

3.3 Specialized Knowledge

Iiná bá has not been provided with any prior specialized knowledge of the subject properties by the BIA.

3.4 Commonly Known or Reasonably Ascertainable Knowledge

Based on common knowledge, it is understood that a portion of Parcel A-1-2 was once a residential housing area for the BIA, but the structures have been demolished for some time now. In addition, it is common knowledge that Parcel E-1 was a former two-cell wastewater treatment lagoon system that is now abandoned or out-of-service.

3.5 Valuation Reduction for Environmental Issues

Iiná bá does not have any personal knowledge of any valuation reduction related to environmental issues associated with the subject properties.

3.6 Owner, Property Manager, and/or Occupant Information

All of the subject parcels are under the management and/or contained previous activities that were managed by the BIA. Other than a few residential homesites on Parcel A-1-1, there are no onsite occupants for the subject properties. Locally, the BIA Chinle Agency office located near Parcel B-1-2 manages all BIA occupied or held properties in Chinle, BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 6

Arizona until such time they are relinquished back to the Navajo Nation.

3.7 Reason for Performing Phase I ESA

This Phase I ESA was performed by iiná bá, at the request of the BIA since the subject parcels are being considered for relinquishment back to the Navajo Nation once site conditions have been deemed acceptable. Should any REC be documented on a parcel, the performance of a Phase II ESA will be conducted to determine the significance of the REC and if any remedial actions are warranted. This ESA was written in accordance with ASTM E 1527-21 and the USEPA All Appropriate Inquiry Rule.

4.0 RECORDS REVIEW

All records reviewed are summarized in Appendix 2. Copies of pertinent documents are included in Appendix 4. Federal and state database information is presented in Appendix 2.

4.1 Standard Environmental Record Source

The following Federal EPA and State of Arizona databases were searched for hazardous conditions that might have an impact on the environmental status of the subject property.

SUMMARY OF RECORDS SEARCHED

DATABASE

RADIUS

SEARCHED

DATE

LIST UPDATED

STATUS

Federal NPL and Delisted NPL Site List 1 mile 10/12/2022 10/5/2022 Site not listed

Proposed NPL List 1 mile 10/12/2022 10/5/2022 Site not listed

Delisted NPL List 1 mile 10/12/2022 10/5/2022 Site not listed

NPL Liens (Federal Superfund Liens) 1 mile 10/12/2022 4/1/2022 Site not listed

CERCLIS 1 mile 10/12/2022 10/5/2022 Site not listed

CERC-NFRAP (No Further Remedial Action Planned) 1 mile 10/12/2022 10/5/2022 Site not listed

Liens 2 (CERCLA Lien Information) 1 mile 10/12/2022 10/5/2022 Site not listed

CORRACTS (Corrective Action Report) 1 mile 10/12/2022 9/19/2022 Site not listed

RCRA-TSDF (Treatment, Storage, Disposal) 1 mile 10/12/2022 9/19/2022 Site not listed

RCRA-LQG (Large-Quantity Generator) 1 mile 10/12/2022 9/19/2022 Site not listed

RCRA-SQG (Small-Quantity Generator) 1 mile 10/12/2022 9/19/2022 Site not listed

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 7

RCRA-CESQG (Conditionally Exempt SQG) 1 mile 10/12/2022 9/19/2022 Site not listed

RCRA-NonGen (Non Generators) 1 mile 10/12/2022 9/19/2022 Site not listed

US Eng Controls (Engineering Controls Sites) 1 mile 10/12/2022 8/17/2022 Site not listed

US Institutional Controls (Institutional Controls Sites) 1 mile 10/12/2022 8/17/2022 Site not listed

ERNS (Emergency Response Notification System) 1 mile 10/12/2022 9/20/2022 Site not listed

HMIRS (Hazardous Materials Information Reporting System)

1 mile 10/12/2022 9/19/2022 Site not listed

DOT OPS (Incident and Accident Data) 1 mile 10/12/2022 7/21/2022 Site not listed

DOT CDL (Clandestine Drug Labs) 1 mile 10/12/2022 8/18/2022 Site not listed

US Brownfields 1 mile 10/12/2022 9/9/2022 Site not listed

Department of Defense 1 mile 10/12/2022 8/9/2022 Site not listed

FUDS (Formerly Used Defense Sites) 1 mile 10/12/2022 9/11/2022 Site not listed

LUCIS (Land Use Control Information System) 1 mile 10/12/2022 8/3/2022 Site not listed

CONSENT (Superfund Consent Decrees) 1 mile 10/12/2022 9/27/2022 Site not listed

ROD (Records of Decision) 1 mile 10/12/2022 10/5/2022 Site not listed

UMTRA (Uranium Mill Tailing Sites) 1 mile 10/12/2022 8/24/2022 Site not listed

DEBRIS Region 9 (Illegal Dum Site Locations) 1 mile 10/12/2022 10/11/2022 Site not listed

ODI (Open Dump Inventory) 1 mile 10/12/2022 7/21/2022 Site not listed

Mines 1 mile 10/12/2022 8/17/2022 Site not listed

TRIS (Toxic Chemical Release Inventory System) 1 mile 10/12/2022 8/11/2022 Site not listed

TSCA (Toxic Substances Control Act) 1 mile 10/12/2022 9/12/2022 Site not listed

FTTS (Federal Insecticide, Fungicide, & Rodenticide Act) 1 mile 10/12/2022 8/18/2017 Site not listed

HIST FTTS (Tracking System Administrative Case Listing) 1 mile 10/12/2022 8/18/2017 Site not listed

SSTSICIS (Section 7 Tracking Systems) 1 mile 10/12/2022 7/18/2022 Site not listed

ICIS (Integrated Compliance Information System) 1 mile 10/12/2022 9/27/2022 Site not listed

PADS (PCB Activity Database System) 1 mile 10/12/2022 10/6/2022 Site not listed

MLTS (Material Licensing Tracking System) 1 mile 10/12/2022 10/11/2022 Site not listed

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 8

RADINFO (Radiation Information Database) 1 mile 10/12/2022 9/21/2022 Site not listed

FINDS (Facility Index System Registry System) 1 mile 10/12/2022 8/25/2022 Site not listed

RAATS (RCRA Administration Action Tracking System) 1 mile 10/12/2022 6/2/2008 Site not listed

SCRD Drycleaners (State Coalition for Remediation of Drycleaners) 1 mile 10/12/2022

8/3/2022 Site not listed

Coal Ash EPA (Coal Combustion Residues Surface Impoundments List) 1 mile 10/12/2022

8/25/2022 Site not listed

US Hist CDL (National Clandestine Laboratory Register) 1 mile 10/12/2022 8/18/2022 Site not listed

PCB Transformer (PCB Transformer Registration Database)

1 mile 10/12/2022 8/4/2022 Site not listed

Federal Facility (Federal Facility Site Information Listing) 1 mile 10/12/2022 9/21/2022 Site not listed

Coal Ash DOE (Steam-Electric Plan Operation Data) 1 mile 10/12/2022 8/25/2022 Site not listed

FEMA UST (Underground Storage Tank Listing) 1 mile 10/12/2022 9/27/2022 Site not listed

STATE AND LOCAL RECORDS

SHWS (State Hazardous Waste Site) 1 mile 10/12/2022 9/7/2022 Site not listed

SCS (State Cleanup Sites Listing) 1 mile 10/12/2022 9/21/2022 Site not listed

SWF/FL (Solid Waste Facilities) 1 mile 10/12/2022 10/3/2022 Site not listed

SWRCY (Recycling Facility Listing) 1 mile 10/12/2022 10/6/2022 Site not listed

LUST (Leaking Underground Storage Tank Listing) 1 mile 10/12/2022 10/6/2022 Site not listed

LTANKS (Leaking Underground Storage Tank Listing) 1 mile 10/12/2022 9/21/2022 Site not listed

TANKS Storage Tank Facility Listing) 1 mile 10/12/2022 8/18/2022 Site not listed

UST (Listing of Underground Storage Tanks) 1 mile 10/12/2022 10/6/2022 Site not listed

LAST (Leaking Aboveground Storage Tanks) 1 mile 10/12/2022 8/29/2022 Site not listed

AST (Listing of Aboveground Storage Tanks) 1 mile 10/12/2022 8/29/2022 Site not listed

SPILLS (Spill Data) 1 mile 10/12/2022 8/15/2022 Site not listed

INSTITUTIONAL CONTROLS 1 mile 10/12/2022 8/17/2022 Site not listed

VCP (Voluntary Cleanup Program Listing) 1 mile 10/12/2022 9/21/2022 Site not listed

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 9

DRYCLEANERS (Drycleaner Facility Listing) 1 mile 10/12/2022 9/17/2022 Site not listed

CDL (Clandestine Drug Laboratory Listing) 1 mile 10/12/2022 9/13/2022 Site not listed

NPDES (List of Discharge Permits) 1 mile 10/12/2022 9/27/2022 Site not listed

ASBESTOS (List of Asbestos Demolition and Renovation Jobs) 1 mile 10/12/2022

4/18/2022 Site not listed

INDIAN ODI (Open Dumps on Indian Lands) 1 mile 10/12/2022 7/21/2022 Site not listed

INDIAN LUST (Leaking Underground Storage Tanks on Indian Lands) 1 mile 10/12/2022

6/13/2022 Site not listed

INDIAN UST (Listed Underground Storage Tanks on Indian Lands) 1 mile 10/12/2022

6/13/2022 Site not listed

INDIAN VCP (Voluntary Cleanup Priority Listing on Indian Lands) 1 mile 10/12/2022

9/13/2022 Site not listed

INDIAN RESERVATION (Listing of Indian Reservations) 1 mile 10/12/2022 10/6/2022 Sites listed

INDIAN VCP (Voluntary Cleanup Priority Listing on Indian Lands) 1 mile 10/12/2022

9/13/2022 Site not listed

Manufactured Gas Plants 1 mile 10/12/2022 NA Site not listed

PFAS 1 mile 10/12/2022 7/26/2022 Site not listed

2020 Corrective Action 1 mile 10/12/2022 8/4/2022 Site not listed

4.2 Physical Setting Source(s)

In addition to a United States Geological Survey (USGS) topographic map (see Appendix 1, Figure 1), the following additional physical setting sources were consulted.

4.2.1 Geological Conditions

The subject parcels consist alluvial and eolian (wind) surficial deposits of Quaternary Age overlying the Chinle Formation, a colorful mudstone, such as in the Painted Desert, and less abundant lenses of sandstone and conglomerate, deposited by a large river system.

This unit typically is eroded into badlands topography and contains clays that are prone to shrinking and swelling. (210-230 Ma). In addition, based on the EDR® GeoCheck Report®, the average indoor radon levels in the Chinle area are 1.823 picocuries per liter (pCi/L), with 87% of homes reporting less than 4 pCi/L, which is the USEPA indoor air threshold level.

4.2.2 Soil Conditions

According to the United States Department of Agriculture (USDA) Natural Resources

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 10

Conservation Service (NRCS), the subject properties are mapped with the following soil series (see Custom Soil Resource Reports in Appendix 4).

Parcels A-1-1 and A-1-2:

• Urban land-Ives-Jocity complex (80.5% of area): 0 to 3% slopes, forms on stream terraces, floodplain steps from slope alluvium derived from sandstone and shale and/or eolian (wind) sands derived from sandstone and shale over residuum weathered from sandstone and shale. Sandy clay loam to clay loam and clay.

• Claysprings-Lithic Torriorthents-Typic Torriorthents complex (17% of area): 1 to 60% slopes, forms on hills and escarpments from residuum weathered from sandstone and shale. Clayey to clayey loam with gravelly sandy loam, bedrock can be shallow.

• Trail-Ives-Riverwash complex (2.5% of area): 0 to 2% slopes, forms as flood-plain steps and floodplains derived from alluvium from sandstone. Clay to stratified loam and sand.

Parcel B-1-2:

• Urban land-Ives-Jocity complex sodic (100% of area): 0 to 3% slopes, forms on stream terraces and floodplain steps from slope alluvium derived from sandstone and shale and/or eolian (wind) sands derived from sandstone and shale over residuum weathered from sandstone and shale. Sandy clay loam to clay loam and clay.

Parcel E-1:

• Aneth-Naha-Sheppard family complex (100% of area): 0 to 2% slopes, forms on floodplains from alluvium derived from sandstone. Gravelly sand, sand, and fine sandy loam.

Parcels G-1 and P-1:

• Aneth-Naha-Sheppard family complex (68% of area): 0 to 2% slopes, forms on floodplains from alluvium derived from sandstone. Gravelly sand, sand, and fine sandy loam.

• Urban land-Ives-Jocity complex (29% of area): 0 to 3% slopes, forms on stream terraces, floodplain steps from slope alluvium derived from sandstone and shale and/or eolian (wind) sands derived from sandstone and shale over residuum weathered from sandstone and shale. Sandy clay loam to clay loam and clay.

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 11

• Navajo-Bebeevar complex (2% of area): 0 to 3% slopes, forms on floodplains from stream alluvium derived from sandstone and shale. Clay loam to clay with sandy loam, fine sand, and loam.

4.2.3 Surface Water and Groundwater Conditions

Surface Water: The nearest mapped surface water feature to each parcel is summarized below:

Parcels A-1-1 and A-1-2: Chinle Wash (400 feet NE).

Parcel B-1-2: Chinle Wash (2,500 feet NE).

Parcel E: Nazlini Wash (600 feet SW).

Parcels G-1 and P-1: Chinle Wash (160 feet N).

Groundwater: The depth to groundwater beneath Parcels B-1-2, E-1, G-1, and P-1 is likely to be shallow due to proximity to nearby washes. Other properties at similar elevations along Main Street (Pic N Run Store and former Chinle Hay Sales lot) have shallow alluvial groundwater (unconfined) at a depth between 26 to 29 feet below land surface (bls).

However, this groundwater is not potable and would only be able to service livestock or irrigation uses. Deeper groundwater used for drinking such as the NTUA potable water system is from deep wells into bedrock at depths of 1,000 feet or more.

One Hundred Year Floodplain: Based on the mapped location of the subject properties and the position of the 100-year and 500-year flood zones designated by Federal Emergency Management Agency (FEMA), the following pertains to floodplains for each of the subject parcels:

Parcels A-1-1 and A-1-2: There is an area mapped with a 0.20% chance of an annual flood east of the parcels along the Chinle Wash at a distance of approximately ¼-mile. The subject parcels are not located within a 100-year or 500-year flood zone.

Parcel B-1-2: There is an area mapped with a 0.20% chance of an annual flood northeast of the parcel along the Chinle Wash at a distance of approximately 0.60 miles. The subject parcel is not located within a 100-year or 500-year flood zone.

Parcel E: The subject parcel is not located within a 100-year or 500-year flood zone.

Parcels G-1 and P-1: There is an area mapped with a 0.20% chance of an annual flood east of the parcels at an approximate distance of 100 feet.

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4.2.4 Wetlands

Based on a reconnaissance of the subject properties, there were no observations of hydric soils indicative of a wetland condition. In addition, according to the National Wetlands Inventory (NWI), the following pertains to the existence of wetlands within or near the subject parcels:

Parcels A-1-1 and A-1-2: Wetlands are mapped within 150 feet NE of the parcels along the floodplain of the Chinle Wash.

Parcel B-1-2: Wetlands are mapped within ½-mile NE of the parcel along the floodplain of the Chinle Wash. Other wetlands are mapped along the channel of Nazlini Wash located approximately ¾-mile west of the parcel.

Parcel E-1: Wetlands are mapped as adjacent to or near the southwestern border of the parcel that belong to the Nazlini Wash. The wetlands along the Chinle Wash are approximately 0.60 miles NE of the parcel. A reconnaissance of this parcel during the site visit did not identify the presence of any wetlands.

Parcels G-1 and P-1: Wetlands are mapped within 100 feet north of Parcel P-1 along the floodplain of Chinle Wash.

4.2.5 Public Wells and Wellhead Protection Areas

Public Wells: There is one (1) federal drinking water well reported within 1/8 to ¼-miles of Parcels A-1-1 and A-1-2. The well is owned by the Canyon De Chelly National Monument and is cited as serving a population of 375. The well is disinfected for use by gaseous chlorination. The well specifically serves a Navajo Indian Health Service community.

Tribal Wells: There are seven (7) wells listed on the Navajo Nation Water Code Administration (WCA) database in the Chinle area. Two (2) are listed as abandoned (NTUA Chinle #1 and NTUA Chinle #3). Another well (Chinle BIA #1 North) is listed with an unknown status. The four (4) other wells are listed as active (South Well, Chinle South NTUA-1, Chinle #2 NTUA Center, and Chinle #3A NTUA South). All active wells are listed with an municipal use with completion dates between 1954 and 1971. Each well is completed as a alluvial well except for the Chinle South NTUA-1 well, which is listed as being completed into the Canyon De Chelly Formation. The alluvial wells are completed to a depth of 111 feet bgs and the Canyon De Chelly well is completed to a depth of 310 feet bgs. Static water levels ranged from 16 to 35 feet below the top of well casings. Based on the location of these active wells, the following wells are in close proximity to one (1) or more of the subject parcels (see Figures in Appendix 1 for locations):

• Chinle #2 NTUA Center Well: 825 feet NE of Parcel A-1-1.

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• Chinle #3 NTUA South Well: 700 feet NE of Parcel A-1-1.

• Chinle #3 Well: within NE corner of Parcel P-1.

• Unknow NTUA Well: within Parcel G-1 adjacent to an abandoned well.

Arizona USGS Wells: There are 17 Arizona USGS data collection wells within a mile radius of Parcels A-1-1/A-1-2. These wells are used to monitor groundwater conditions (levels) and are reportedly installed between 100 and 280 feet bgs into the unconfined aquifer (2 other wells reportedly completed to 605 and 617 feet bgs into the Chinle Formation.

Federal USGS Wells: There are 16 federal USGS data collection wells within a mile radius of Parcels A-1-1/A-1-2. These wells are used to monitor groundwater conditions (levels) and are reportedly installed between 100 and 280 feet bs into the unconfined aquifer (2 other wells reportedly completed to 605 and 617 feet bgs into the Chinle Formation.

Oil & Gas Wells: There are no mapped oil or gas wells within a one-mile radius of the subject parcels).

Additional details on all wells mapped within one (1) mile of the subject parcels are included in Appendix 2.

Wellhead Protection Areas: The subject parcels are not known to exist within any designated Wellhead Protection Area.

4.3 Historic Use Information on the Subject property

There is limited documentation pertaining to the history on the subject parcels.

City Directories: There are no city directory listings for the subject parcels. See the EDR®-City Directory Abstract in Appendix 2.

Sanborn Fire Insurance Maps: There is no map coverage for this area. See the Certified Sanborn® Map Report in Appendix 2.

Historic USGS Maps: EDR® conducted a historic topographic map search for the subject parcels and reported four (4) maps ranging from 1955 to 2018. The following are descriptions and interpretations from the historical topographic map review.

1955:

Parcels A-1-1 and A-1-2. Numerous structures are represented in these parcels that are believed to be BIA residential housing units. Also, a water tower is also represented at this time (NTUA). A school is also located within the parcels at this timeframe.

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 14

Parcel B-1-2. This parcel appears to be mostly undeveloped with the possibility of a single structure at or near its southern boundary. A road appears to bisect this parcel from north to south.

Parcel E-1. This parcel does not show any development (sewer lagoons) at this time.

Most of the area surrounding the property appears to be undeveloped. A landing strip is referenced to the southeast of the property.

Parcels G-1 and P-1. These parcels are undeveloped at this time except for a reference to a well. Two (2) structures are shown on the property immediately west of these parcels.

There is no development shown in the vicinity to the south or east.

1982:

Parcels A-1-1 and A-1-2. Additional housing units appear to have been developed within A-1-2 as well as new structures along Navajo Route 7 (Main Street). Two (2) water tanks are cited as well as a well in Parcel A-1-1.

Parcel B-1-2. The property remains undeveloped but there are numerous housing units built adjacent to the south as well as the BIA Administration Offices are shown to the northwest, along with other development in the area (adjacent school housing and structures).

Parcel E-1. The two-cell sewer lagoons are referenced on the parcel at this time and are cited as inactive.

Parcels G-1 and P-1. There is more development to the west and north of the parcels, but it is uncertain if it pertains to the Holiday Inn. New development is to the southeast and east that includes the Canyon De Chelly Visitors Center and the Thunderbird Lodge and campground.

2014:

Parcels A-1-1 and A-1-2. This topographic map appears to be a digital version and does not show or represent any site improvements. Only a reference to a “Chinle Water Tank” is cited on the topo.

Parcel B-1-2. This topographic map appears to be a digital version and does not show or represent any site improvements. Only a reference to a school to the east is cited on the topo map.

Parcel E-1. The two-cell sewer lagoons are referenced on the parcel at this time and are cited as inactive.

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 15

Parcels G-1 and P-1. This topographic map appears to be a digital version and does not show or represent any site improvements.

2018:

Parcels A-1-1 and A-1-2. This topographic map is the same as in 2014 that it does not show any site improvements, just roadways, water features, and topography.

Parcel B-1-2. This topographic map appears to be a digital version and does not show or represent any site improvements.

Parcel E-1. The two-cell sewer lagoons are referenced on the parcel at this time and are cited as inactive.

Parcels G-1 and P-1. This topographic map appears to be a digital version and does not show or represent any site improvements.

Aerial Photographs

Aerial photographs representing historical periods in time were available from EDR® for the subject properties. The periods available included 1952, 1954, 1968, 1971, 1976, 1980, 1997, 2007, 2010, 2013, and 2017. The following are descriptions and interpretations from the aerial photograph review. A copy of the EDR® Aerial Photo Decade Packages for each parcel is included in Appendix 2.

1952:

Parcels A-1-1 and A-1-2. There is some centralized development within the subject parcels including a water tank and possibly a small school (?) with agricultural fields to the NW and scattered residential lots to the north and east.

Parcel B-1-2. The subject parcel is undeveloped at this time. There appears to be two (2) oval features with some development to the adjacent parcel to the south. Navajo Route 7 is a dirt road.

Parcel E-1. The subject parcel at this time was undeveloped as well as much of the surrounding lands, with some minor agricultural use along what is now Main Street.

Parcels G-1 and P-1. Parcel G-1 appears to have two (2) water tanks with some small structures on its southern limits. Parcel P-1 is vacant land that extends into the Chinle Wash.

1954:

Parcels A-1-1 and A-1-2. There are no discernable differences within the subject parcels

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at this timeframe.

Parcel B-1-2. The subject parcel remains undeveloped with no other changes recognized for the area.

Parcel E-1. There is no discernable change within the subject parcel or surrounding parcels during this timeframe.

Parcels G-1 and P-1. There is no discernable change within the subject parcels during this timeframe.

1968:

Parcels A-1-1 and A-1-2. BIA housing was constructed in A-1-2 with school structures to the southwest across Navajo Route 7 (dormitories ?), with a second water tank on Parcel A-1-1.

Parcel B-1-2. The subject parcel is undeveloped. However, the BIA agency complex is built to the west-northwest, as well as the school to the southeast and the BIA housing quarters area immediately adjacent to the south. Navajo Route 7 appears to be paved.

Parcel E-1. The lagoons were present and active within this parcel at this timeframe.

Parcels G-1 and P-1. No change in status of either parcel. More development has occurred to the northwest and east-southeast across Navajo Route 7.

1971:

Parcels A-1-1 and A-1-2. No image for this timeframe was provided.

Parcel B-1-2. No image for this timeframe was provided.

Parcel E-1. No changes in site status during this timeframe. Minor development changes NE of parcel on northeastern side of Main Street.

Parcels G-1 and P-1. No image for this timeframe was provided.

1976:

Parcels A-1-1 and A-1-2. The residential properties to the south perimeter of A-1-1 along Navajo Route 7 are present at this time. No other discernable changes in conditions are apparent during this timeframe.

Parcel B-1-2. The subject parcel remains undeveloped. There is additional development at the school property and new housing constructed adjacent to the east of the housing

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 17

south of the subject parcel.

Parcel E-1. The lagoons within this parcel appear to be inactive at this time. No changes to adjoining properties.

Parcels G-1 and P-1. No changes in site status during this timeframe are evident in this photo. Portions of the National Park (Trading Post) are present at this time.

1980:

Parcels A-1-1 and A-1-2. No apparent change in status within this parcel or surrounding lands during this timeframe.

Parcel B-1-2. The subject parcel remains undeveloped and there are no discernable changes to the surrounding lands.

Parcel E-1. Lagoons still appear to be inactive. Abundant development along Main Street NE of parcel.

Parcels G-1 and P-1. No changes are apparent during this timeframe for the subject parcels, with the exception of the NTUA wellhouse on Parcel P-1. More development has occurred to the south across Navajo Route 7 and at the Trading Post area.

1997:

Parcels A-1-1 and A-1-2. Some of the previous housing units on the northwestern side of Parcel A-1-2 have been demolished as well as some of the structures to the southwest across Navajo Route 7 that appeared to be school buildings (dormitories).

Parcel B-1-2. The subject parcel remains undeveloped and there are no discernable changes to the surrounding lands.

Parcel E-1. No apparent change in status within this parcel or surrounding lands.

Parcels G-1 and P-1. The Holiday Inn is present immediately west of Parcel G-1 as well as more development south and southeast of Navajo Route 7.

2007:

Parcels A-1-1 and A-1-2. No apparent change in status within this parcel or surrounding lands. The remaining school buildings to the southwest across Navajo Route 7 have been demolished and the Chinle Juvenile Detention Center is present as well as the Behavioral Health Center.

Parcel B-1-2. The subject parcel remains undeveloped and there are no discernable

BIA LAND TRANSFERS, CHINLE, APACHE COUNTY, ARIZONA – PHASE I ESA 18

changes to the surrounding lands. The juvenile detention center is present to the west of the BIA complex at this time.

Parcel E-1. No apparent change in status within this parcel or surrounding lands.

Parcels G-1 and P-1. No discernable changes within the subject parcels during this timeframe from the previous conditions. Some of the housing units to the south of the parcel have been demolished to make way for the new Judicial Complex.

2010:

Parcels A-1-1 and A-1-2. No apparent change in status within this parcel or surrounding lands.

Parcel B-1-2. The subject parcel remains undeveloped and there are no discernable changes to the surrounding lands.

Parcel E-1. No apparent change in status within this parcel or surrounding lands.

Parcels G-1 and P-1. No discernable changes within the subject parcels during this timeframe from the previous conditions.

2013:

Parcels A-1-1 and A-1-2. No apparent change in status within this parcel or surrounding lands.

Parcel B-1-2. The subject parcel remains undeveloped and there are no discernable changes to the surrounding lands. A construction lay-down yard appears to be present on the land south of the parcel where the new Judicial Complex was built.

Parcel E-1. No apparent change in status within this parcel or surrounding lands.

Parcels G-1 and P-1. No discernable changes within the subject parcels during this timeframe from the previous conditions.

2017/2018:

Parcels A-1-1 and A-1-2. No apparent change in status within this parcel or surrounding lands.

Parcel B-1-2. The subject parcel remains undeveloped and there are no discernable changes to the surrounding lands. The Chinle Judicial Complex is completed south of the subject parcel.

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Parcel E-1. No apparent change in status within this parcel or surrounding lands.

Parcels G-1 and P-1. No discernable changes within the subject parcels during this timeframe from the previous conditions.

4.4 Findings from Previous Reports

iiná bá did not identify the existence of any other previous environmental-related or other reports pertaining to the subject properties during the performance of this Phase I ESA.

4.5 Historic Use Information on Adjoining Properties

The same historic resources utilized to determine the development and use of the subject property have been utilized to determine the historic use information on adjoining properties. All adjoining properties have been utilized for what they currently are being utilized for such as open rangeland for oil & gas production, light commercial operations such as aggregate mining and concrete/asphalt production, and commercial retail sales.

This condition is unchanged since the previous ESA.

Environmental Records Search

The same Federal EPA and Arizona databases were searched for hazardous conditions on adjoining properties as on the subject property described in Section 4.1. The results of the database research for sites with possible RECs are included below. The database search results are included in Appendix 2.

The subject properties are not listed as containing any sites pertaining to any of the federal, state, or local (tribal) databases searched, with the exception of being listed on the Indian Reservation database as the Navajo Nation Reservation. The following summarizes the mapped sites reported within ¼-mile from the subject property.

BIA Building 1,000 – Chinle Agency (2)

This site is mapped as less than 1/8-mile from Parcels A-1-1/A-1-2 (75 feet north of A-1-1) as a Indian Leaking Underground Storage Tank (LUST) site. The site specifically maps at the BIA Road Maintenance yard located adjacent to Parcel A-1-1. Records indicate it was given a Navajo Nation Environmental Protection Agency (NNEPA) site ID of NAV #341.

The status of the LUST at this site is closed with a confirmed leak from an 8,500-gallon gasoline tank that was installed in 1964 and taken out of service in 1972. The current status of this site is that it received a No Further Action (NFA) status with a completed cleanup. Given the NFA status of the historic release, this site is not considered an REC with regards to any of the subject BIA parcels.

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Mustang #7267 – NAV #015 (A4)

This site is mapped as less than 1/8-mile from Parcels A-1-1/A-1-2 as a FINDS site with a past RCRA enforcement action pertaining to an UST. The enforcement action was administrative which means there was something deficient in their required regulatory reporting pertaining to their UST system. Given the lack of an indication of any release, this site is not considered an REC with regards to any of the subject BIA parcels.

Garcia’s Trading Post – NAV #058 (7)

This site is mapped as less than 1/8-mile east from Parcels A-1-1/A-1-2 (250 feet east) as an Indian UST site. Records indicate historic fuel storage from a 3,000-gallon and 3,500-gallon UST that were installed in 1970. The status of this site as of 1992 was that the USTs were permanently out of use. Given that this site was granted a NAV number by the NNEPA, it was likely investigated and contained some sort of a release. However, the records do not indicate this site had a confirmed release nor that any assessment or remediation was performed. In addition, the site is approximately 200 feet west of Parcel G-1. Given the lack of information confirming any release and the location of the site at a lower topographic elevation than Parcels A-1-1/A-1-2, this site is not considered an REC with regards to any of the subject BIA parcels.

Chinle Unified School District 24 Transportation – NAV #226 (8)

This site is mapped as between 1/8 and ¼-mile south-southwest of Parcels A-1-1/A-1-2 (690 feet) as an Indian UST/LUST site. Records indicate six (6) USTs were reported onsite to store and dispense gasoline and diesel fuel for fleet and bus use. Three (3) USTS were reportedly out of use (1,000-gallon gasoline; 7,000-gallon diesel, and 4,000-gallon gasoline) that were installed in 1959. It is cited that a confirmed release was discovered during UST closure that has been given a NFA status from a completed cleanup. Three (3) additional tanks installed in 1990 when the previous USTs were removed are still active and contain 20,000-gallon gasoline; 10,000-gallon gasoline, and 10,000-gallon diesel. This site is also 650 feet southeast of Parcel B-1-2. Given the NFA status of the historic release, this site is not considered an REC with regards to any of the subject BIA parcels.

Chinle Chevron – NAV #147 (9)

This site is mapped within 1/8-mile west-northwest of Parcels A-1-1/A-1-2 (1,025 feet NW) as an Indian UST/LUST site. Records indicate eight (8) USTs were reported onsite to store and dispense gasoline and diesel fuel for commercial use. Three (3) USTS were reportedly out of use (200-gallon used oil; 6,000-gallon gasoline, and 3,000-gallon gasoline) that were installed in 1941 (used oil) and 1967.