FINAL

Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

Perfluorooctanesulfonic Acid (PFOS) and Perfluorooctanoic 

Acid (PFOA) Impacted Sites

ARNG Installations, Nationwide

August 2020

Prepared for:

Army National Guard Bureau

111 S. George Mason Drive

Arlington, VA 22204

UNCLASSIFIED
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

i

Table of Contents

Executive Summary....................................................................................................1

1. Introduction ........................................................................................................................4

Authority and Purpose ..............................................................................................4

Preliminary Assessment Methods .............................................................................4

Report Organization ..................................................................................................5

Facility Location and Description...............................................................................5

Facility Environmental Setting ...................................................................................6

1.5.1 Geology .........................................................................................................6

1.5.2 Hydrogeology .................................................................................................6

1.5.3 Hydrology .......................................................................................................7

1.5.4 Climate ...........................................................................................................7

1.5.5 Current and Future Land Use .........................................................................8

2. Fire Training Areas ...........................................................................................................12

3. Non-Fire Training Areas ...................................................................................................13

Truck Maintenance Area .........................................................................................13

Well Pump House ...................................................................................................13

4. Emergency Response Areas ............................................................................................15

5. Adjacent Sources .............................................................................................................16

FDOT Former Lee’s Motel ......................................................................................16

Thompson Tractor Co, Inc. ......................................................................................16

FDOT-Marianna ......................................................................................................16

CAT Pit ...................................................................................................................16

6. Preliminary Conceptual Site Model ..................................................................................18

AOI 1: Well Pump House .......................................................................................18

7. Conclusions .....................................................................................................................21

Findings ..................................................................................................................21

Uncertainties ...........................................................................................................21

Potential Future Actions ..........................................................................................22

8. References ......................................................................................................................25
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

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Figures

Figure ES-1 Summary of Findings

Figure ES-2 Preliminary Conceptual Site Model, Marianna Readiness Center, Florida

Figure 1-1 Facility Location

Figure 1-2 Groundwater Features

Figure 1-3 Surface Water Features

Figure 3-1 Non-Fire Training Areas

Figure 5-1 Adjacent Sources

Figure 6-1 Area of Interest

Figure 6-2 Preliminary Conceptual Site Model, AOI 1 Well Pump House

Figure 7-1 Summary of Findings

Tables

Table ES-1 AOIs at Marianna Readiness Center

Table 7-1 AOIs at Marianna Readiness Center

Table 7-2 No Suspected Release Areas

Table 7-3 Summary of Uncertainties

Table 7-4 PA Findings Summary

Appendices

Appendix A Data Resources

Appendix B Preliminary Assessment Documentation

B.1 Interview Records

B.2 Visual Site Inspection Checklists

B.3 Conceptual Site Model Information

Appendix C Photographic Log
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

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Acronyms and Abbreviations

°F degrees Fahrenheit

AECOM AECOM Technical Services, Inc.

AFFF aqueous film forming foam

AGCTL Alternative Groundwater Cleanup Target Level

AOI Area of Interest

ARNG Army National Guard

ASCTL Alternative Soil Cleanup Target Level

AST Above Ground Storage Tank

CERCLA Comprehensive Environmental Response, Compensation, and Liability

Act

CFR Code of Federal Regulations

CSM conceptual site model

EDRTM Environmental Data Resource, Inc.TM

FDOT Florida Department of Transporation

FDEP Florida Department of Environmntal Protection

FLARNG Florida Army National Guard

FTA fire training area

HA Health Advisory

LUST Leaking Under Ground Storage Tank

PA Preliminary Assessment

PFAS per- and poly-fluoroalkyl substances

PFOA perfluorooctanoic acid

PFOS

ppt

perfluorooctanesulfonic acid

parts per trillion

SI Site Inspection

TIIF Trustees of the Internal Improvemnet Fund

US United States

USACE United States Army Corps of Engineers

USEPA United States Environmental Protection Agency

UST Underground Storage Tank

VSI visual site inspection
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

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Executive Summary

The Army National Guard (ARNG) is performing Preliminary Assessments (PAs) and Site

Inspections (SIs) for Perfluorooctanesulfonic acid (PFOS) and Perfluorooctanoic acid (PFOA)

Impacted Sites at ARNG Facilities Nationwide. A PA for per- and polyfluoroalkyl substances

(PFAS)-containing materials was completed for the Marianna Readiness Center in Marianna,

Florida, to assess potential PFAS release areas and exposure pathways to receptors. The current

Marianna Readiness Center is constructed on a parcel of land owned by the state of Florida and

leased to the Florida ARNG (FLARNG). The performance of this PA included the following tasks:

· Reviewed available administrative record documents and Environmental Data Resources,

Inc. (EDR)TM report packages to obtain information relevant to potential PFAS releases, such

as: drinking water well locations, historical aerial photographs, Sanborn maps, and

environmental compliance actions in the area surrounding the facility;

· Conducted a site visit on 30 January 2019 and completed visual site inspections (VSIs) at

locations where PFAS-containing materials were suspected of being stored, used, or

disposed;

· Interviewed current Marianna FLARNG personnel during the site visit and FLARNG

environmental managers and operations staff;

· Identified Area(s) of Interest (AOIs) and developed a preliminary conceptual site model (CSM)

to summarize potential source-pathway-receptor linkages of potential PFAS in soil,

groundwater, surface water, and sediment for each AOI.

Prior to conducting the PA at the Marianna Readiness Center, PFAS constituents were detected

in the facility supply well located at the southeast corner of the property. This well is currently

equipped with a chlorination and filtration treatment system. Consequently, the well pump house

has been identified as an AOI related to a potential PFAS release at the Marianna Readiness

Center. The AOI is shown on Figure ES-1 and described in Table ES-1 below:

Table ES-1: AOIs at Marianna Readiness Center

Area of Interest Name Used by Potential Release Date

AOI 1 Well Pump House FLARNG Unknown

Based on potential PFAS release at the AOI, there is potential for exposure to PFAS

contamination in media at or near the facility. The preliminary CSM for Marianna Readiness

Center, which presents the potential receptors and media impacted, is shown on Figure ES-2.
Truck

Maintenance Area

FDOT-Marianna

FDOT Former

Lee's Motel

Thompson Tractor

Co, Inc.

CAT Pit

Well Pump

AOI 1 House

Legend

Area of Interest

Potential PFAS Release

No Suspected Release

Installation Boundary

Water Body

Wetland

CLIENT

REVISED

SCALE

ARNG

GIS BY

CHK BY

GC

BM

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1:6,360

6/9/2020 ­ Figure ES-1 PM RG 6/9/2020

C:\Users\stankevichm\OneDrive - AECOM Directory\ARNG_PFAS_GIS_60552172\MXDs\FL\Marianna_RC\Fig_ES-1_Marianna_Summary_Of_Findings.mxd

12420 Milestone Center Drive

Germantown, MD 20876

Summary of Findings

Base Map: Source: Esri, DigitalGlobe, GeoEye,

Earthstar Geographics, CNES/Airbus DS, USDA, USGS,

0 265 530 1,060

Feet

2
Media

SOURCE PATHWAY RECEPTOR

AOI 1

Potential PFAS 

Release

PFAS in 

Surface Soil

Human 

Activities

Leaching/

Infiltration

Precipitation

/Run-Off

Airborne Soil 

Particulate

Surface Soil 

at AOI

Shallow 

Groundwater

Surface 

Water/ 

Sediment

Subsurface 

soil

Source Release 

Mechanism Media Transport and Migration Media Exposure Routes

Inhalation of 

Dust

Ingestion

Ingestion

Ingestion

Ingestion

Human Receptors: 

Current/ Future

Flow-Chart Continues

Partial / Possible Flow

Flow-Chart Stops

Incomplete Pathway

Potentially Complete Pathway

Complete Pathway

Site 

Worker

Construction 

Worker Resident Recreational User

Site 

Worker

Construction 

Worker Resident Recreational 

User

LEGEND

/ / / /

/ / / /

Figure ES-2

Preliminary Conceptual Site Model

Marianna Readiness Center, Florida

/ /

/

/ / / /

/

/ /

/

Notes:

1. The resident and recreational 

user refer to an off-site receptors.

2. Dermal contact exposure 

pathway is incomplete for PFAS

/

3
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

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1. Introduction

Authority and Purpose

The Army National Guard (ARNG) G9 is the lead agency in performing Preliminary Assessments 

(PAs) and Site Inspections (SIs) for Perfluorooctanesulfonic acid (PFOS) and Perfluorooctanoic 

acid (PFOA) at Impacted Sites at ARNG Facilities Nationwide. This work is supported by the 

United States (US) Army Corps of Engineers (USACE) Baltimore District and their contractor 

AECOM Technical Services, Inc. (AECOM) under Contract Number W912DR-12-D-0014, Task 

Order W912DR17F0192, issued 11 August 2017.

The ARNG is assessing potential effects on human health related to processes at facilities that 

used per- and poly-fluoroalkyl substances (PFAS), primarily in the form of aqueous film forming 

foam (AFFF) released as part of firefighting activities, although other PFAS sources are possible. 

In addition, the ARNG is assessing businesses or operations adjacent to the ARNG facility (not 

under the control of ARNG) that could potentially be responsible for a PFAS release. 

PFAS are classified as emerging environmental contaminants that are garnering increasing 

regulatory interest due to their potential risks to human health and the environment. PFAS 

formulations contain highly diverse mixtures of compounds. Thus, the fate of PFAS compounds 

in the environment varies. The regulatory framework at both federal and state levels continues to 

evolve. The US Environmental Protection Agency (USEPA) issued lifetime Drinking Water Health 

Advisories (HAs) for PFOA and PFOS in May 2016, but there are currently no promulgated 

national standards regulating PFAS in drinking water. The HA is 70 parts per trillion (ppt) for PFOS 

and PFOA, individually or combined. 

This report presents the findings of a PA for PFAS-containing materials at the current Marianna 

Readiness Center (also referred to as “the facility”), Florida, in accordance with the 

Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as 

amended, the National Oil and Hazardous Substances Pollution Contingency Plan (40 Code of 

Federal Regulations [CFR] Part 300), and Army requirements and guidance. 

This PA documents locations where PFAS may have been released into the environment at the 

Marianna Readiness Center. The term PFAS will be used throughout this report to encompass all 

PFAS chemicals being evaluated, including PFOS and PFOA, which are key components of 

AFFF.

Preliminary Assessment Methods

The performance of this PA included the following tasks: 

· Reviewed available administrative record documents and Environmental Data Resources, 

Inc. (EDR)TM report packages to obtain information relevant to potential PFAS releases, such 

as: drinking water well locations, historical aerial photographs, Sanborn maps, and 

environmental compliance actions in the area surrounding the facility; 

· Conducted a site visit on 30 January 2019 and completed visual site inspections (VSIs) at 

locations where PFAS-containing materials were suspected of being stored, used, or 

disposed;

· Interviewed Florida ARNG (FLARNG) personnel including environmental managers and 

operations staff during the site visit;
PFAS Preliminary Assessment Report

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Marianna, Florida

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· Identified Area(s) of Interest (AOIs) and developed a preliminary conceptual site model (CSM) 

to summarize potential source-pathway-receptor linkages of potential PFAS in soil, 

groundwater, surface water, and sediment for each AOI. 

Report Organization

This report has been prepared in accordance with the USEPA Guidance for Performing 

Preliminary Assessments under CERCLA (USEPA 1991). The report sections and descriptions of 

each are:

· Section 1 – Introduction: identifies the project purpose and authority and describes the 

facility location, environmental setting, and methods used to complete the PA.

· Section 2 – Fire Training Areas: describes the Fire Training Areas (FTAs) at the facility 

identified during the site visit. 

· Section 3 – Non-Fire Training Areas: describes other locations of potential PFAS releases 

at the facility identified during the site visit. 

· Section 4 – Emergency Response Areas: describes areas of potential PFAS release at the 

facility, specifically in response to emergency situations. 

· Section 5 – Adjacent Sources: describes sources of potential PFAS release adjacent to the 

facility that are not under the control of ARNG. 

· Section 6 – Preliminary Conceptual Site Model: describes the pathways of PFAS transport 

and receptors for the AOIs and the facility. 

· Section 7 – Conclusions: summarizes the data findings and presents the conclusions of the 

PA. 

· Section 8 – References: provides the references used to develop this document.

· Appendix A – Data Resources

· Appendix B – Preliminary Assessment Documentation

· Appendix C – Photographic Log

Facility Location and Description

The Marianna Readiness Center is located off U.S. 90 (parallel to Interstate 10), approximately 4 

miles west of the city of Marianna, located in Jackson County, FL (Figure 1-1). FLARNG has 

operated at the subject property since 1956. FLARNG leases the property through the Trustees 

of the Internal Improvement Fund (TIIF) of the state of Florida for use as a readiness center. The 

lease document appears in Appendix A. The site is situated on approximately 5 acres, with a 

20,868 square-foot building (Jackson County Property Appraiser, 2019). Two storage buildings 

are located south of the main readiness center building, and a covered, non-enclosed structure 

used for vehicle maintenance is located at the southeast corner of the property. Based on aerial 

imagery provided in the EDRTM report (Appendix A) there does not appear to be evidence of 

major changes in facility operation from 1961 (the first available aerial image of the property) to 

the present. 

A potable well used by the facility is located at the southeast corner of the property and is enclosed 

in a brick pump house. The well is equipped with a chlorination and filtration system. 

Aerial imagery in the EDRTM report suggest the surrounding properties have remained 

predominately rural and residential, with the exception of state and county owned facilities to the 
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west and south of the Marianna Readiness Center. A state-owned facility was located about 1,800 

feet southwest of the subject site, prior to 1940. Property records and ARNG personnel interviews 

indicate that this facility may have operated as a prison prior to converting to the current Florida 

Department of Transportation (FDOT) maintenance facility. The date of this transfer was not 

determined during this PA. An agricultural center located adjacent and to the west and south of 

the Marianna Readiness Center was developed after 1955. Currently, the surrounding area 

consists of commercial and residential properties to the north, residential and pastureland to the 

east, and state and county properties to the south and west. 

Facility Environmental Setting

Jackson County is divided into three physiographic units: the Marianna River Valley Lowlands, 

the Delta Plain Highlands, and the Terraced Coastal Lowlands, all of which are minor units of the 

Coastal Plain Physiographic Province. The Marianna Readiness Center is situated in the 

Marianna River Valley Lowlands physiographic unit, which was formed as the result of erosion 

and deposition by a number of streams, namely the Chattahoochee-Apalachicola rivers, the 

Chipola River, Dry Creek, and Holes Creek. The lowlands along each of these streams developed 

as floodplain terraces and are considered one physiographic unit that was developed in the 

Marianna area through complicated sequences of stream erosion, deposition, and capture 

(Moore, 1955). The resulting topography is rolling hills consisting of clays, silts, and sands 

bisected by stream valleys with outcroppings of limestone (WRS Infrastructure & Environment, 

Inc., 2003). 

1.5.1 Geology

The following descriptions were adapted from a Florida Geologic Survey geological map (Green, 

et al. 2003). Near ground surface, the Pliocene-Pleistocene Citronelle Formation consists of 

sands and gravels with varying amounts of clay. The Citronelle Formation overlies the Middle 

Miocene to Early Pliocene-age Alum Bluff group, consisting of clayey sands and gravels, to stiff, 

greenish, micaceous clays with variable admixtures of silt, sand, and shell. 

The Lower Miocene-age Chattahoochee Formation lies unconformably below the Alum Bluff 

group and consists of brownish-gray, moderately indurated, sandy packstone to wakestone with 

foraminifera.

Oligocene-age Marianna Limestone lies unconformably below the Chattahoochee Formation and 

is characterized as cavernous, white to gray, soft, fine gained, poorly indurated, glauconitic 

fossiliferous wakestone. In and around the town of Marianna, a grayish-yellow or light olive-green 

dolosilt occurs at the top of the Marianna Limestone.

Late Eocene-age Ocala group limestones lie unconformably below the Marianna Formation. In 

the northwest portion of Jackson County, Ocala Group limestones are up to 200 feet thick and 

consist of moderately indurated cream- to white- colored grainstone with large benthic 

foraminifera. The Bumpnose member of the Ocala group has been identified in the vicinity of the 

facility and is characterized by poorly- to well- indurated, cream to white, fossiliferous packstone, 

and in some areas, wakestone. 

1.5.2 Hydrogeology

The regional hydrogeologic framework of Jackson County generally consists of three aquifer 

systems: the surficial aquifer, the intermediate aquifer, and the Floridan Aquifer (WRS 

Infrastructure & Environment, Inc., 2003). 
PFAS Preliminary Assessment Report

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The surficial aquifer is relatively thin and composed of sand and clay terrace deposits and

admixtures. The surficial aquifer surrounding the Marianna Readiness Center is encountered at

approximately five feet below ground surface. The surficial aquifer is rarely used for potable water

supplies, as the clastic sediments that comprise this aquifer generally have low permeability and

produce small quantities of water from wells. The surficial aquifer is generally under unconfined

conditions and is recharged by local rainfall (WRS Infrastructure & Environment, Inc., 2003).

The intermediate aquifer is primarily composed of clays, sandy clays, intercalated sands, creamy

white limestone, and greenish-gray marls. It is the confining unit between the surficial aquifer and

the Floridan Aquifer, but may be breached by sinkholes, which provide localized areas of fluid

exchange and semi-confining conditions. This unit is typically the Chattahoochee Formation and

often contains thin irregular lenses of sandy limestone and dolomite, which may yield small

quantities of water under artesian conditions. Recharge of the intermediate aquifer is through

leakage from the overlying surficial aquifer (WRS Infrastructure & Environment, Inc., 2003).

Collectively, the Ocala Group Limestones and Marianna Limestone comprise the Floridan Aquifer

system in the Marianna area. All of these limestones are sources of groundwater for most

municipalities and industries and are considered artesian (Moore, 1955). Much of the Florida

Aquifer contains good secondary porosity caused by dissolution following deposition. The

Floridan Aquifer is recharged where the unit outcrops at the surface or is breached by sinkholes.

Regional groundwater flow in the Floridan Aquifer is to the south (WRS Infrastructure &

Environment, Inc., 2003).

An EDRTM report conducted a well search for a 1-mile radius surrounding the facility (Appendix

A). Using additional online resources, such as state and local Geographic Information System

databases, wells were researched to a 4-mile radius of the facility. Groundwater features

surrounding the facility are shown in Figure 1-2.

1.5.3 Hydrology

One surface water retention area was identified at the Marianna Readiness Center, located

approximately 80 feet southwest of the main building. A surface water drainage ditch runs eastwest and parallel to the U.S. 90. Surface water flow appears to be directed to the north and

northwest, toward the storm water retention area as well as the storm water drainage ditch located

to the north of the Marianna Readiness Center Building. The storm water retention pond is likely

connected to local groundwater in the surficial aquifer. Because of the karst topography and

geology surrounding the Marianna Readiness Center, springs are abundant in the surrounding

area. The facility is located in an area designated by the Florida Geological Survey and the Florida

Department of Environmental Protection (FDEP) as a Springs Protections Area (FDEP, 2011).

The facility is located approximately 4 miles west of Jackson Blue Spring, which is defined as a

1

st magnitude spring located in Jackson County (Bartel, Barrios, Pritzl, & Coates, 2011).

Connectivity between the storm water retention pond and local springs is not suspected. Surface

water features surrounding the facility are shown in Figure 1-3.

1.5.4 Climate

The Marianna Readiness Center is located in Northwest Florida and the climate is characterized

subtropical with hot and humid summers and mild winters. The average annual high temperature

is 78.8 degrees Fahrenheit (°F), the average annual low temperature is 56.3 °F, and average

annual precipitation is 56.77 inches (Climate-Data.org, 2019). The threat of hurricanes is high

during the six-month long Atlantic hurricane season, which spans from 1 June to 30 November.

Peak hurricane season occurs between mid-August and late October, when waters in the

equatorial Atlantic and Gulf of Mexico have warmed enough to help support the development of

tropical waves (Florida Climate Center, Florida State University, 2019).
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

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1.5.5 Current and Future Land Use

The Marianna Readiness Center is currently owned by the state of Florida, leased to FLARNG

and is developed with the Marianna Readiness Center building, two storage buildings, and one

non-enclosed maintenance area. As described in Section 1.4, surrounding properties consist of

commercial and residential properties to the north, residential and pastureland to the east, and

state and county owned facilities to the south and west. Reasonably anticipated future land use

is not expected to change from the current land use.
Marianna Readiness Center

Legend

Installation Boundary

^_

CLIENT

REVISED

SCALE

ARNG

GIS BY

CHK BY

GC

BM

4/3/2019

4/3/2019

NOTES Preliminary Assessment for PFAS at Marianna Readiness Center, FL

1:31,680

4/3/2019 ­ Figure 1-1 PM RG 4/3/2019

Q:\Projects\ENV\GEARS\GEO\ARNG PFAS\900-CAD-GIS\920-GIS or Graphics\MXD\FL\Marianna_RC\Fig_1-1_Marianna_Facility_Location.mxd

12420 Milestone Center Drive

Germantown, MD 20876

Facility Location

Base Map: Sources: Esri, HERE, DeLorme, USGS,

Intermap, increment P Corp., NRCAN, Esri Japan, METI,

0 0.25 0.5 1

Miles

9
&<

!C(

!C(

!C(

!C(

Legend

Installation Boundary

Water Body

Wetland

Inferred Groundwater

Flow Direction

Geology

Chattahoochee

Formation

Residuum on Oligocene

Sediments

Suwannee Limestone -

Marianna Limestone

Undifferentiated

Wells

&<

Water Supply Well

!C( Public Water Supply

CLIENT

REVISED

SCALE

ARNG

GIS BY

CHK BY

GC

MS

5/6/2019

5/6/2019

NOTES Preliminary Assessment for PFAS at Marianna Readiness Center, FL

1:15,840

5/6/2019 ­ Figure 1-2 PM RG 5/6/2019

\\URSGermantown.us.ie.urs\Germantown\Projects\ENV\GEARS\GEO\ARNG PFAS\900-CAD-GIS\920-GIS or Graphics\MXD\FL\Marianna_RC\Fig_1-2_Marianna_Groundwater_Features.mxd

12420 Milestone Center Drive

Germantown, MD 20876

Groundwater Features

Base Map: Source: Esri, DigitalGlobe, GeoEye,

Earthstar Geographics, CNES/Airbus DS, USDA, USGS,

0 0.125 0.25 0.5

Miles

10
SAPP BAY

WATERSHED

WADDELLS MILL CREEK

WATERSHED

CARTERS

MILL BRANCH

WATERSHED

UPPER DRY

CREEK-CHIPOLA RIVER

WATERSHED

Legend

Installation Boundary

Water Body

Wetland

River/Stream

Surface Water Flow Direction

CLIENT

REVISED

SCALE

ARNG

GIS BY

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NOTES Preliminary Assessment for PFAS at Marianna Readiness Center, FL

1:15,840

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12420 Milestone Center Drive

Germantown, MD 20876

Surface Water Features

Base Map: Source: Esri, DigitalGlobe, GeoEye,

Earthstar Geographics, CNES/Airbus DS, USDA, USGS,

0 0.125 0.25 0.5

Miles

11
PFAS Preliminary Assessment Report

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2. Fire Training Areas

Based on information provided by FLARNG personnel with knowledge of the facility dating back

to 2007, no FTAs were identified at the Marianna Readiness Center. The FLARNG personnel

interviewed did not have knowledge of the property from the beginning of FLARNG occupation in

1956 through to the beginning of their tenure in 2007. AECOM also requested information from

the city of Marianna Fire Department regarding any fire training activity in the area; however, a

response from the city of Marianna Fire Department was not received.
PFAS Preliminary Assessment Report

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Marianna, Florida

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3. Non-Fire Training Areas

In addition to FTAs, the PA evaluated areas where PFAS-containing materials may have been 

broadly used, stored, or disposed. This may include buildings with fire suppression systems, paint 

booths, AFFF storage areas, and areas of compliance demonstrations. Information on these 

features obtained during the PA are included in Appendices A and B. Non-FTAs were 

investigated as part of the PA. A description of each non-FTA is presented below, and the nonFTAs are shown on Figure 3-1 with photographs appearing in Appendix C. 

Truck Maintenance Area

The truck maintenance area is located at the southwestern corner of the Marianna Readiness 

Center property. The geographic coordinates are 30°46'57.8"N; 85°17'35.8"W. According to 

FLARNG personnel, this area is used for general vehicle maintenance of ARNG vehicles. All 

fueling activity takes place offsite at local retail fueling stations. Fire protection in the truck 

maintenance area is provided by a wall mounted ABC class fire extinguisher. The truck 

maintenance area was not equipped with an AFFF fire suppression system, and according to 

FLARNG personnel with knowledge of the site since 2007, AFFF has not been used or stored in 

this area. 

Well Pump House

The potable well and pump house are located at the southeast corner of the Marianna Readiness 

Center property and provides water for the readiness center. The geographic coordinates are 

30°46'57.1"N; 85°17'32.7"W. The pump is enclosed in a brick structure and is equipped with a 

chlorination and filtration system. Prior to the PA site visit, a pre-treatment groundwater sample 

was collected from the potable well and analyzed for PFAS constituents. Results of this data 

indicate detections of PFAS constituents; however, these concentrations are reported well below 

the HA of 70 ppt for PFOA and PFOS, individually or combined. Results of the pre-treatment 

groundwater sampling are provided in Appendix A. According to FLARNG personnel with 

knowledge of the site since 2007, AFFF has not been used or stored in this area. However, the 

detections of PFAS within the potable well may be indicative of a PFAS release, so the well pump 

house is conservatively considered a PFAS release area. 
Well Pump

House

Truck

Maintenance

Area

Legend

Potential PFAS Release

No Suspected Release

Installation Boundary

CLIENT

REVISED

SCALE

ARNG

GIS BY

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NOTES Preliminary Assessment for PFAS at Marianna Readiness Center, FL

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12420 Milestone Center Drive

Germantown, MD 20876

Non-Fire Training Area

Base Map: Source: Esri, DigitalGlobe, GeoEye,

Earthstar Geographics, CNES/Airbus DS, USDA, USGS,

0 65 130 260

Feet

14
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

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4. Emergency Response Areas

No emergency response areas were identified within the Marianna Readiness Center property

during the PA through available interviews or EDRTM reports.
PFAS Preliminary Assessment Report

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5. Adjacent Sources

No off-facility PFAS sources adjacent to Marianna Readiness Center were identified during the 

PA. Following a review of the EDRTM report provided in Appendix A, the FDOT Former Lee’s 

Motel, Thompson Tractor Co. Inc., FDOT-Marianna, and CAT Pit were reviewed for their potential 

for off-facility contamination of PFAS at the Marianna Readiness Center. The locations of these 

facilities are shown on Figure 5-1. Based on information provided in the EDRTM report as well as 

the physical locations of the suspected adjacent sources, the aforementioned properties are not 

considered to be potential off-site sources of PFAS impacts. 

FDOT Former Lee’s Motel

The FDOT Former Lee’s Motel is classified as a Leaking Under Ground Storage Tank (LUST) site 

and is located 0.029 miles northwest of the Marianna Readiness Center. According to public 

records available in the FDEP OCULUS database, petroleum constituents associated with a 

former motel/retail station dispenser island and underground storage tank (UST) have been 

identified in groundwater gauging data collected in 2012 that indicate groundwater flow direction 

is to the south-southeast, toward the Marianna Readiness Center. A former retail gas station is 

not considered a likely potential source of PFAS that could affect the Marianna Readiness Center. 

Thompson Tractor Co, Inc.

According to the EDRTM report and the FDEP OCULUS database, the Thompson Tractor Co, Inc. 

facility is located 0.099 miles northeast of the Marianna readiness Center has three registered 

USTs containing diesel fuel and three above ground storage tanks (ASTs) containing engine oil. 

Based on available records, the facility is in compliance with state regulations and is not believed 

to be a potential source of PFAS.

FDOT-Marianna

An FDOT maintenance facility is located 0.24 miles southwest of the Marianna Readiness Center. 

According to property records and FLARNG interviews, this property may have operated as a 

corrections facility prior to becoming a FDOT facility. Public records also indicate that the facility 

is also registered as a waste tire collector. Storage or use of AFFF at the FDOT maintenance 

facility or the previous corrections facility is unknown and could not be verified by FLARNG 

personnel. Based on available information, the FDOT-Marianna facility is not believed to be a 

potential source of PFAS. 

CAT Pit

According to the EDRTM report and the FDEP OCULUS database, the CAT Pit facility is located 

0.0344 miles northeast of the Marianna Readiness Center and is registered as a Yard Trash 

Processing facility. Because this facility is used to process organic yard waste, the CAT Pit is not 

believed to be a potential source of PFAS. 
FDOT-Marianna

FDOT Former

Lee's Motel

Thompson Tractor

Co, Inc.

CAT Pit

Legend

No Suspected Release

Installation Boundary

Water Body

Wetland

CLIENT

REVISED

SCALE

ARNG

GIS BY

CHK BY

GC

BM

6/28/2019

6/28/2019

NOTES Preliminary Assessment for PFAS at Marianna Readiness Center, FL

1:6,360

6/28/2019 ­ Figure 5-1 PM RG 6/28/2019

Q:\Projects\ENV\GEARS\GEO\ARNG PFAS\900-CAD-GIS\920-GIS or Graphics\MXD\FL\Marianna_RC\Fig_5-1_Marianna_Adjacent_Sources.mxd

12420 Milestone Center Drive

Germantown, MD 20876

Adjacent Sources

Base Map: Source: Esri, DigitalGlobe, GeoEye,

Earthstar Geographics, CNES/Airbus DS, USDA, USGS,

0 265 530 1,060

Feet

17
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

18

6. Preliminary Conceptual Site Model

Based on the PA findings, one non-FTA was identified where PFAS may have been incidentally 

spilled or discharged to the ground surface. As such, the AOI may be a potential PFAS source 

area. The AOI and preliminary CSM are shown on Figure 6-1 and Figure 6-2, respectively, and 

summarized below. 

Although the use of AFFF could not be confirmed, the following AOI was identified as a potential 

PFAS source area: AOI 1 – Well Pump House.

The following section describes the CSM components and the specific preliminary CSM 

developed for AOI 1. The CSM identifies the three components necessary for a potentially 

complete exposure pathway: (1) source, (2) pathway, (3) receptor. If any of these elements are 

missing, the pathway is considered incomplete.

Human exposure via the dermal contact pathway may occur, and current risk practice suggests it 

is an insignificant pathway compared to ingestion; however, exposure data for dermal pathways 

are sparse and continue to be the subject of PFAS toxicological study (National Ground Water 

Association, 2018). Receptors for Marianna Readiness Center include site workers, construction 

workers, recreational users, and off-facility residents. The preliminary CSM for AOI 1 indicates 

which specific receptors could potentially be exposed to PFAS.

AOI 1: Well Pump House

AOI 1 includes the well pump house containing the facility’s water supply well. In 2017, prior to 

the PA, the potable well was sampled and measured low-level detections of PFAS below the HA. 

The detections of PFAS may be indicative of a potential PFAS release in the vicinity of the AOI. 

AOI 1 is surrounded by paved and grassy areas. If any PFAS releases occurred on these 

surfaces, ground-disturbing activities may result in potential exposure to PFAS in surface soils via 

ingestion and inhalation of dust particles for site workers and construction workers. PFAS releases 

may have also infiltrated the subsurface via cracks in the pavement, so ground-disturbing 

activities may result in potential exposure via ingestion of subsurface soils for construction 

workers. 

PFAS are water soluble and can migrate readily from soil to groundwater via leaching. Due to the 

low-level detections of PFAS within the facility’s potable well, site workers are potentially exposed 

to PFAS via ingestion of groundwater. Three public water supply wells are within a 1-mile radius, 

southeast of AOI 1, in the inferred cross-gradient groundwater direction. It is possible that offfacility residents may also be exposed to PFAS in groundwater from these wells.

Potential PFAS releases in surface water runoff likely drain into the on-facility drainage ditch 

running east to west, north of the Marianna Readiness Center Building, or into the storm water 

retention basin located on the west side of the facility. The storm water retention pond is likely 

connected to local groundwater in the surficial aquifer. Site workers and construction workers 

performing work in these areas may be potentially exposed to PFAS via ingestion of surface water 

or sediment. PFAS in surface water runoff or in groundwater may interact with the abundant 

springs in the surrounding area, so recreational users of local springs may be potentially exposed 

to PFAS in surface water/sediment or groundwater. 
&<

!C(

!C(

!C(

Truck

Maintenance Area

FDOT-Marianna

FDOT Former Lee's Motel

Thompson Tractor

Co, Inc.

CAT Pit

SAPP BAY

WATERSHED

CARTERS

MILL BRANCH

WATERSHED

UPPER DRY

CREEK-CHIPOLA

RIVER WATERSHED

Well Pump

AOI 1 House

Legend

Area of Interest

Potential PFAS Release

No Suspected Release

Installation Boundary

Water Body

Wetland

River/Stream

Surface Water Flow Direction

Inferred Groundwater Flow Direction

!C( Public Water Supply

&<

Water Supply Well

CLIENT

REVISED

SCALE

ARNG

GIS BY

CHK BY

GC

BM

6/9/2020

6/9/2020

NOTES Preliminary Assessment for PFAS at Marianna Readiness Center, FL

1:12,000

6/9/2020 ­ Figure 6-1 PM RG 6/9/2020

C:\Users\stankevichm\OneDrive - AECOM Directory\ARNG_PFAS_GIS_60552172\MXDs\FL\Marianna_RC\Fig_6-1_Marianna_AOI.mxd

12420 Milestone Center Drive

Germantown, MD 20876

Area of Interest

Base Map: Source: Esri, DigitalGlobe, GeoEye,

Earthstar Geographics, CNES/Airbus DS, USDA, USGS,

0 265 530 1,060

Feet

19
Media

SOURCE PATHWAY RECEPTOR

AOI 1

Potential PFAS 

Release

PFAS in 

Surface Soil

Human 

Activities

Leaching/

Infiltration

Precipitation

/Run-Off

Airborne Soil 

Particulate

Surface Soil 

at AOI

Shallow 

Groundwater

Surface 

Water/ 

Sediment

Subsurface 

soil

Source Release 

Mechanism Media Transport and Migration Media Exposure Routes

Inhalation of 

Dust

Ingestion

Ingestion

Ingestion

Ingestion

Human Receptors: 

Current/ Future

Flow-Chart Continues

Partial / Possible Flow

Flow-Chart Stops

Incomplete Pathway

Potentially Complete Pathway

Complete Pathway

Site 

Worker

Construction 

Worker Resident Recreational User

Site 

Worker

Construction 

Worker Resident Recreational 

User

LEGEND

/ / / /

/ / / /

Figure 6-2

Preliminary Conceptual Site Model

AOI 1 Well Pump House

/ /

/

/ / / /

/

/ /

/

Notes:

1. The resident and recreational 

user refer to an off-site receptors.

2. Dermal contact exposure 

pathway is incomplete for PFAS

/

20
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

21

7. Conclusions

This report presents a summary of available information gathered during the PA on the use and 

storage of AFFF and other PFAS-related activities at the current Marianna Readiness Center. The 

PA findings are based on the information presented in Appendix A and Appendix B.

Findings

Prior to conducting the PA at the Marianna Readiness Center, PFAS constituents were detected 

in the facility supply well located at the southeast corner of the property. This well is currently 

equipped with a chlorination and filtration treatment system. Consequently, the well pump house 

has been identified as an AOI related to a potential PFAS release at the Marianna Readiness 

Center. The AOI is shown on Figure 7-1 and described in Table 7-1 below:

Table ES-1: AOIs at Marianna Readiness Center

Area of Interest Name Used by Potential Release Date

AOI 1 Well Pump 

House

FLARNG Unknown

Based on potential PFAS release at the AOI, there is potential for exposure to PFAS 

contamination in media at or near the facility. The preliminary CSM for AOI 1, which presents the 

potential receptors and media impacted, is shown on Figure 6-2.

The following area, which was discussed in Section 3 and is presented in Table 7-2 below, was 

determined to have no suspected release:

Table 7-2: No Suspected Release Areas

No Suspected Release Area Used by Rationale

Truck Maintenance Area FLARNG

The truck maintenance area is used only 

for general truck maintenance. Fueling 

takes place offsite at local retail fueling 

stations. The truck maintenance area is not 

equipped with an AFFF fire suppression 

system. Additionally, FLARNG personal 

with knowledge of the facility dating back 

to its construction in 2007 confirmed that 

AFFF has not been stored or used here. 

Uncertainties

A number of information sources were investigated during this PA to determine the potential for 

PFAS-containing materials to have been present, used, or released at the facility. Historically, 

documentation of PFAS use was not required because PFAS were considered benign. Therefore, 

records were not typically kept by the facility or available during the PA on the use of PFAS in 

training, firefighting, or other non-traditional activities, or on its disposition. 

The conclusions of this PA are based on all available information, including: previous 

environmental reports, EDRsTM, observations made during the VSI, and interviews. Interviews of 

personnel with direct knowledge of a facility generally provided the most useful insights regarding 

a facility's historical and current PFAS-containing materials. Sometimes the provided information 

was vague or conflicted with other sources. Gathered information has a degree of uncertainty due 
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

22

to the absence of written documentation, the limited number of personnel with direct knowledge 

due to staffing changes, the time passed since PFAS was first used (1969 to present), and a 

reliance on personal recollection. Inaccuracies may arise in potential PFAS release locations, 

dates of release, volume of releases, and the concentration of AFFF used. There is also a 

possibility the PA has missed a source of PFAS, as the science of how PFAS may enter the 

environment continually evolves.

In order to minimize the level of uncertainty, readily available data regarding the use and storage 

of PFAS were reviewed, current personnel were interviewed, multiple persons were interviewed 

for the same potential source area, and potential source areas were visually inspected.

Table 7-3 summarizes the uncertainties associated with the PA:

Table 7-3: Summary of Uncertainties

Location Source of Uncertainty

AOI 1: Well Pump House

Results of pre-treatment groundwater data 

collected from the potable well onsite indicate 

detections of PFAS constituents. However, 

concentrations are reported below the USEPA 

established HA of 70 ppt for PFOS and PFOA, 

individually or combined. While no release of 

PFAS is indicated at the Marianna Readiness 

Center, no other potential adjacent source was 

identified. The source of PFAS in groundwater 

is unknown.

No other details regarding the well construction 

(e.g. date of establishment and well depth) 

could be found through a review of available 

information.

Marianna Readiness Center

Information from FLARNG personnel at the 

facility was not available for the period before 

2007. A data gap exists from the beginning of 

FLARNG occupation in 1956 to the beginning of 

interviewee’s tenure in 2007. 

Potential Future Actions

Prior to conducting the PA at the Marianna Readiness Center, PFAS constituents were detected 

in the facility supply well located at the southeast corner of the property. This well is currently 

equipped with a chlorination and filtration treatment system. Consequently, the well pump house 

has been identified as an AOI related to a potential PFAS release at the Marianna Readiness 

Center. Based on the preliminary CSM developed for the AOI, there is potential for receptors to 

be exposed to PFAS contamination in soil, groundwater, surface water, and sediment at the AOI. 

Table 7-4 summarizes the rationale used to determine if the AOI should be considered for further 

investigation under the CERCLA process and undergo an SI.
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

23

Table 7-4: PA Findings Summary

Area of Interest AOI Location Rationale Potential Future

Action

AOI 1: Well Pump

House

30°46'57.1" N; 

85°17'32.7" W

Detections of PFAS

measured in the

facility’s potable well

Proceed to an SI, focus

on soil, groundwater,

surface water,

sediment

ARNG will evaluate the need for an SI at Marianna Readiness Center based on the potential

receptors, the potential migration of PFAS contamination off the facility, and the availability of

resources.
Truck

Maintenance Area

FDOT-Marianna

FDOT Former

Lee's Motel

Thompson Tractor

Co, Inc.

CAT Pit

Well Pump

AOI 1 House

Legend

Area of Interest

Potential PFAS Release

No Suspected Release

Installation Boundary

Water Body

Wetland

CLIENT

REVISED

SCALE

ARNG

GIS BY

CHK BY

GC

BM

6/9/2020

6/9/2020

NOTES Preliminary Assessment for PFAS at Marianna Readiness Center, FL

1:6,360

6/9/2020 ­ Figure 7-1 PM RG 6/9/2020

C:\Users\stankevichm\OneDrive - AECOM Directory\ARNG_PFAS_GIS_60552172\MXDs\FL\Marianna_RC\Fig_7-1_Marianna_Summary_Of_Findings.mxd

12420 Milestone Center Drive

Germantown, MD 20876

Summary of Findings

Base Map: Source: Esri, DigitalGlobe, GeoEye,

Earthstar Geographics, CNES/Airbus DS, USDA, USGS,

0 265 530 1,060

Feet

24
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

25

8. References

Bartel, R. L., Barrios, K., Pritzl, M., & Coates, K. (2011). Jackson Blue Spring Water Resource

Assessment 11-01. Havana: Northwest Florida Water Management District.

Climate-Data.org. (n.d.). Climate Marianna. Retrieved May 5, 2019, from Climate-Data.org:

https://en.climate-data.org/north-america/united-states-of-america/florida/marianna134517/

FDEP. (2011, August 24). Florida Department of Environmental Protection Geospatial Open

Data. Retrieved March 4, 2019, from Florida Department of Environmental Protection

Geospatial Open Data:

http://geodata.dep.state.fl.us/datasets/1eea00d9f3794a12bc658e77de29574f_1

FDEP. (2019, February 19) Fire Training Facilities Assessment for PFOA and PFOS. Retrieved

from Florida Department of Environmental Protection Waste Cleanup Program:

https://floridadep.gov/waste/waste-cleanup/documents/dod-pfas-letter

Florida Climate Center, Florida State University. (2019). Florida Climate Center, Florida State

University. Retrieved March 5, 2019, from Florida Climate Center, Florida State

University: https://climatecenter.fsu.edu/topics/hurricanes

Green, R. C., Evans, W. L., Bryan, J. R., & Paul, D. T. (2003). Geologic Map of the Eastern Half

of the U.S.G.S. 1:100,000 Scale Marianna Quadrangle, Northwestern Florida.

Tallahassee: Florida Geological Survey.

Jackson County Property Appraiser. (2019). qpublic.net Jackson County, FL. Retrieved March 5,

2019, from qpublic.net:

https://qpublic.schneidercorp.com/Application.aspx?AppID=851&LayerID=15884&PageT

ypeID=4&PageID=7083&KeyValue=01-4N-11-0000-0140-0000

Moore, W. E. (1955). Geology of Jackson County, Florida. Tallahassee: The Florida Geologic

Survey.

National Ground Water Association, 2018. Groundwater and PFAS: State of Knowledge and

Practice. January.

United States Environmental Protection Agency (USEPA). 1991. Guidance for Performing

 Preliminary Assessments under CERCLA. September

United States Geological Survey. (1996). Influences of Environmental Setting on Aquatic

Ecosystems in the Apalachicola-Chattahoochee-Flit River Basin. Atlanta : USGS.

WRS Infrastructure & Environment, Inc. (2003). Site Assessment Report FDOT-Former Lee's

Motel. Tallahassee: WRS.
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

Data Resources
PFAS Preliminary Assessment Report

Marianna Readiness Center, FL

Data resources will be provided separately on CD. Data resources for Marianna Readiness

Center include:

Environmental Data Resources, Inc.TM Geocheck Report

· 2019 Environmental Data Resources, Inc.TM Geocheck Report for Marianna Readiness

Center, FL

Real Property Information

· 1956 Deed By and Between Jackson County, Florida, a political sub-division of the State of

Florida and the Armory Board of the State of Florida at the Marianna Readiness Center, FL

· 1968 Deed and Lease Agreement By and Between The Armory Board, State of Florida and

the Trustees of the Internal Improvement Fund of the State of Florida at the Marianna

Readiness Center, FL, Lease No. 3727

Miscellaneous Data Resources

· 2017 Potable well groundwater analytical data at the Marianna Readiness Center, FL

· 2019 Letter from FDEP regarding alternative groundwater cleanup target levels and

alternative soil cleanup target levels
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

Appendix B

Preliminary Investigation Report
PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

Appendix B.1

Interview Records






PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

Appendix B.2

Visual Site Inspection Checklists




PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

Appendix B.3

Conceptual Site Model Information



PFAS Preliminary Assessment Report

Marianna Readiness Center

Marianna, Florida

Appendix C

Photographic Log
Preliminary Assessment Report

Mariana Readiness Center

Perfluorooctane-Sulfonic Acid (PFOS) and 

Perfluorooctanoic Acid (PFOA) Impacted Sites

ARNG Installations, Nationwide

APPENDIX C – Photographic Log

Army National Guard, Preliminary 

Assessment for PFAS Mariana Readiness Center Mariana, Florida

Photograph No. 1

Description:

Looking west.

General view of the truck 

maintenance area.

Photo date 1/30/19

Photograph No. 2

Description:

Looking south.

ABC fire extinguisher stored 

within the truck maintenance

building.

Photo Date: 1/30/19
Preliminary Assessment Report

Mariana Readiness Center

Perfluorooctane-Sulfonic Acid (PFOS) and 

Perfluorooctanoic Acid (PFOA) Impacted Sites

ARNG Installations, Nationwide

APPENDIX C – Photographic Log

Army National Guard, Preliminary 

Assessment for PFAS Mariana Readiness Center Mariana, Florida

Photograph No. 3

Description:

Looking east toward the 

potable well and pump house. 

Photo Date: 1/30/19

Photograph No. 4

Description:

Looking southeast inside the 

pump house.

Photo Date: 1/30/19
Preliminary Assessment Report

Mariana Readiness Center

Perfluorooctane-Sulfonic Acid (PFOS) and 

Perfluorooctanoic Acid (PFOA) Impacted Sites

ARNG Installations, Nationwide

APPENDIX C – Photographic Log

Army National Guard, Preliminary 

Assessment for PFAS Mariana Readiness Center Mariana, Florida

Photograph No. 5

Description:

Looking southwest inside the 

pump house

Photo Date: 1/30/19

Photograph No. 6

Description:

Looking southwest to 

topographically up gradient

property, the Jackson County 

Agricultural Center. Beyond 

this property is an FDOT 

maintenance facility.

Photo Date: 1/30/19