FINAL

Preliminary Assessment Report

Chesterfield Limited Army Aviation 

Support Facility (AASF), Virginia 

Virginia Army National Guard

Perfluorooctanesulfonic Acid (PFOS) and Perfluorooctanoic 

Acid (PFOA) Impacted Sites

ARNG Installations, Nationwide

July 2020

Prepared for:

Army National Guard Bureau

111 S. George Mason Drive

Arlington, VA 22204

UNCLASSIFIED
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

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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 ...................................................................................5

1.5.1 Soil .................................................................................................................6

1.5.2 Geology .........................................................................................................6

1.5.3 Hydrogeology .................................................................................................6

1.5.4 Hydrology .......................................................................................................7

1.5.5 Climate ...........................................................................................................7

1.5.6 Current and Future Land Use .........................................................................7

2. Fire Training Areas ...........................................................................................................11

3. Non-Fire Training Areas ...................................................................................................12

Building 7431 ..........................................................................................................12

Building 7417 ..........................................................................................................12

4. Emergency Response Areas ............................................................................................14

5. Adjacent Sources .............................................................................................................15

Chesterfield County Fire Station #15 ......................................................................15

2013 Wildland Fire ..................................................................................................15

6. Preliminary Conceptual Site Model ..................................................................................17

AOI 1: Tri-MaxTM Storage Area...............................................................................17

7. Conclusions .....................................................................................................................20

Findings ..................................................................................................................20

Uncertainties ...........................................................................................................20

Potential Future Actions ..........................................................................................21

8. References ......................................................................................................................23
PFAS Preliminary Assessment Report

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Figures

Figure ES-1 Summary of Findings

Figure ES-2 Preliminary Conceptual Site Model for Chesterfield Limited AASF, VA

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 Areas of Interest

Figure 6-2 Preliminary Conceptual Site Model for AOI 1 Tri-MaxTM Storage Area

Figure 7-1 Summary of Findings

Tables

Table ES-1 AOIs at Chesterfield Limited AASF

Table 1-1 Soil Component Properties

Table 7-1 AOIs at Chesterfield Limited AASF

Table 7-2 Uncertainties within the PA

Table 7-3 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
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Acronyms and Abbreviations

°F degrees Fahrenheit

AASF Army Aviation Support Facility

AECOM AECOM Technical Services, Inc.

AFFF aqueous film forming foam

amsl above mean sea level

AOI Area of Interest

ARFF Aircraft Rescue Firefighting

ARNG Army National Guard

bgs below ground surface

CERCLA Comprehensive Environmental Response, Compensation, and Liability

Act

CFR Code of Federal Regulations

CSM conceptual site model

EDRTM Environmental Data Resources, Inc.TM

EMS Emergency Medical Services

FAA Federal Aviation Administration

ft feet

FTA fire training area

HA Health Advisory

NGWA National Ground Water Association

NOAA National Oceanic and Atmospheric Administration

PA Preliminary Assessment

PFAS per- and poly-fluoroalkyl substances

PFOA perfluorooctanoic acid

PFOS perfluorooctanesulfonic acid

SI Site Inspection

SWPPP Stormwater Pollution Prevention Plan

UCMR3 Third Unregulated Contaminant Monitoring Rule

US United States

USACE United States Army Corps of Engineers

USEPA United States Environmental Protection Agency

USGS United States Geological Survey

VA Virginia

VAARNG Virginia Army National Guard

VSI visual site inspection
PFAS Preliminary Assessment Report

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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 Chesterfield Limited Army Aviation Support

Facility (AASF) in Virginia (VA) to assess potential PFAS release areas and exposure pathways

to receptors. Chesterfield Limited AASF is constructed on a parcel of land owned by the county

of Chesterfield, Virginia and has been leased to the Virginia Army National Guard (VAARNG)

since 2015. 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 4 February 2019 and completed visual site inspections at locations

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

· Interviewed the Chesterfield County Airport Operations Manager and the Chesterfield Fire &

Emergency Medical Services (EMS) Battalion Chief during the site visit;

· 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.

One AOI related to potential PFAS release was identified Chesterfield Limited AASF based on

PA data (Figure ES-1) and is summarized in Table ES-1 below:

Table ES-1: AOIs at Chesterfield Limited AASF

Area of Interest Name Used by Potential Release Dates

AOI 1 Tri-MaxTM Storage Area VAARNG Unknown

The Chesterfield County Fire Station #15 was identified as an off-facility potential PFAS source.

The fire station conducts weekly spray pattern testing of AFFF equipment in the field adjacent to

and behind the fire station. Additionally, large quantities of AFFF were found housed in the fire

station and also stored in a P-19 Aircraft Rescue Firefighting (ARFF) vehicle and foam response

trailer. The Chesterfield County Fire Station #15 adjacent source is in the inferred downgradient

groundwater flow path from Chesterfield AASF (Figure ES-1). It is unlikely that releases at the

county fire station would affect Chesterfield AASF.

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

contamination in media at or near the facility. The preliminary CSM for Chesterfield AASF, which

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

third Unregulated Contaminant Monitoring Rule (UCMR3) data, it was indicated that there were

no detections above United States (US) Environmental Protection Agency (USEPA)’s lifetime

Health Advisories in public water systems within 20 miles of the facility. The HA is 70 parts per

trillion for PFOS and PFOA, individually or combined. PFAS analyses performed in 2016 had

method detection limits that were higher than currently achievable. Thus, it is possible that low

concentrations of PFAS were not detected during the UCMR3 but might be detected if analyzed

today.
Reedy Creek

2013 Wildland Fire

Building 7417

Chesterfield County Fire Station 15

Building 7431

AOI 1

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Summary of Findings

Base Map: Source: Esri, DigitalGlobe, GeoEye,

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

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0 650 1,300 2,600

Feet

Legend

Area of Interest

Potential PFAS Release

No Suspected Release

Facility Boundary

Chesterfield Airport Boundary

Water Body

Wetland

River/Stream

2
SOURCE PATHWAY RECEPTOR

AOI 1

Potential AFFF 

release from TriMax fire 

extinguishers

Human 

Activities

Precipitation/ 

Run-Off

Leaching/ 

Infiltration

Airborne Soil 

particulate

Surface Soil 

at AOI

Surface 

Water/ 

sediment

Subsurface 

Soil

Groundwater

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

LEGEND

Figure ES-2

Preliminary Conceptual Site Model

Chesterfield Limited AASF, VA

PFAS in 

Surface Soil/

Surface 

Water

/ / / /

/ / / /

/ / / /

/ / / /

/ / / /

NOTES

1. The resident and recreational users refer to 

off-site receptors.

2. Inhalation of dust for off-site receptors is likely 

insignificant. 

3. Human consumption of fish potentially 

affected by PFAS is possible.

Site 

Worker

Construction 

Worker Resident1,2 Trespasser/Recreational User1,3

Site 

Worker

Construction 

Worker Resident1,2 Trespasser/Recreational User1,3

3
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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 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 for PFOS and 

PFOA, individually or combined. 

This report presents the findings of a PA for PFAS-containing materials at Chesterfield Limited 

Army Aviation Support Facility (AASF) in VA, 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 the known fire training areas (FTAs) at Chesterfield Limited AASF. 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 4 February 2019 and completed visual site inspections (VSIs) at 

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

disposed;

· Interviewed the Chesterfield County Airport Operations Manager and the Chesterfield Fire & 

Emergency Medical Services (EMS) Battalion Chief during the site visit;

· 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. 
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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 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

Chesterfield Limited AASF is located within the Chesterfield County Airport (designated by the 

Federal Aviation Administration [FAA] as FCI) in Chesterfield, VA, near the interchange of Route 

10 and Route 288 (Figure 1-1). Chesterfield Limited AASF consists of 19,500 square feet (ft) of 

hangar space (Buildings 7431 and 7417), 2,218 square ft of office space (Building 7501), and 

associated parking areas. The property is leased by VAARNG from the Chesterfield County 

Airport, which is owned and operated by Chesterfield County, VA. Access to the site is provided 

through Airfield Drive. The facility serves as an aviation detachment for the 2-224th Aviation 

Battalion (EEE, 2018).

Facility Environmental Setting

The topography of the site generally resides at a surface elevation of approximately 199 ft above 

mean sea level (amsl) and slopes slightly to the southeast, according to maps derived from a 

United States Geological Survey (USGS) 7.5’ Digital Elevation Model. Adjacent properties to the 

airport include an industrial park to the west, VA 10 to the south, undeveloped woodland to the 

east, and a residential area to the north. Chesterfield Limited AASF resides within the eastern 

Piedmont Physiographic Province of Virginia (EEE, 2018).
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1.5.1 Soil

As indicated in the 2019 EDRTM report (Appendix A), there are three major soil components

found at the Chesterfield Limited AASF property: Coalfax Variant, Bourne, and Aquults. The

properties of each soil component are listed in Table 1-1 below.

Table 1-1. Soil Component Properties

Soil

Component

Name

Soil

Surface

Texture

Hydrologic

Group

Soil Drainage

Class

Hydric

Status

Corrosion

Potential

Coalfax

Variant

Fine sandy

loam

Class C Somewhat

poorly drained

Partially

Hydric

High

Bourne Fine sandy

loam

Class C Moderately well

drained

Not

Hydric

High

Aquults Fine sandy

loam

Class D Poorly drained All Hydric High

1.5.2 Geology

The Chesterfield Limited AASF is located in the eastern Piedmont Physiographic Province of

Virginia. The site is located near the fall line, which separates the Piedmont and the Coastal

Plain Physiographic provinces, and is the approximate boundary between erosion from the

highlands to the west, and deposition in the lowlands to the east (Virginia Department of

Mines, Minerals and Energy, n.d.). The uppermost geologic unit at Chesterfield Limited AASF

is the Tertiary-age unconsolidated sand and gravel (Figure 1-2). These deposits are thin

outliers from the Coastal Plain and they directly overlie the weathered Mississippian-age

granite bedrock. These commonly oxidized yellow-orange to yellow-brown deposits

represent a fluvial to marginal-marine depositional environment and may be genetically

related to the facies of the Choptank Formation (EEE, 2018).

1.5.3 Hydrogeology

The shallow water table aquifer (Yorktown aquifer) comprises fine-grained quartz sand

interbedded with silt and clay laminae. The Yorktown aquifer is underlain by three confined

artesian aquifers. The 2019 EDRTM report (Appendix A) indicated that no drinking water

supply wells are present within a one-mile radius of the facility, and depth to groundwater is

inferred to occur between 1 and 15 ft below ground surface (bgs). The shallow water table

aquifer is unconfined; therefore, groundwater flows under the influence of gravity, with flow

patterns resembling a subdued reflection of local topography. It is assumed that groundwater

discharges to local streams in the area within the James River Basin. The general shallow

groundwater flow direction across the entire installation likely follows the topography and

flows westerly towards Reedy Creek or southerly towards Swift Creek.

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 is not used for drinking water at the Chesterfield County Airport. Public water

services are provided to airport facilities by Chesterfield County (EEE, 2018), which sources

its water from Lake Chesdin, located approximately 12 miles south of the facility (Chesterfield

County, 2019). Multiple groundwater wells are located within a 4-mile radius of the facility

and are classified as domestic, public/municipal/government, and unknown. Based on the

third Unregulated Contaminant Monitoring Rule (UCMR3) data, it was indicated that there were
PFAS Preliminary Assessment Report

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7

no detections above HAs in public water systems within 20 miles of the facility. The HA is 70 parts

per trillion for PFOS and PFOA, individually or combined. PFAS analyses performed in 2016 had

method detection limits that were higher than currently achievable. Thus, it is possible that low

concentrations of PFAS were not detected during the UCMR3 but might be detected if analyzed

today. Groundwater features are presented on Figure 1-2.

1.5.4 Hydrology

There are no immediate wetlands in the vicinity of the Chesterfield Limited AASF, although

the surrounding airport property includes approximately 65 acres of wetlands (EEE, 2018).

According to the Chesterfield County Airport Stormwater Pollution Prevention Plan (SWPPP),

revised on 12 January 2015, stormwater runoff from the airport generally flows southeast

towards Reedy Creek, although surface water in the northern property may also discharge

to Licking Creek or through wetlands into the Cosby Lake. Overland sheet flow is conveyed

to one of seven outfall areas. Chesterfield Limited AASF is located within the Outfall #2

drainage area, which consists of a 48-inch reinforced concrete pipe located at the

southeastern end of the runway. Outfall #2 receives runoff from the runway, parking lots,

apron, and hangar buildings, and directly discharges into Reedy Creek. All surface water

from the property eventually discharges into the James River about 7 miles to the east

(Chesterfield County, 2015). Surface water features are presented on Figure 1-3.

1.5.5 Climate

The climate of Chesterfield, VA is characterized as humid sub-tropical. The hot season lasts

approximately 3.6 months between May and September and experiences normal maximum and

minimum temperatures of 88 degrees Fahrenheit (°F) and 67 °F, respectively. The cold season

lasts approximately 3 months between December and March and experiences normal maximum

and minimum temperatures of 50 °F and 30 °F, respectively (National Oceanic and Atmospheric

Administration [NOAA], 2019).

Although precipitation is fairly well distributed throughout the year, Chesterfield experiences some

seasonal variation in monthly rainfall. On average, the most precipitation occurs in the month of

August, with an average total accumulation of 4.7 inches, and the least precipitation occurs in the

month of February, with an average total accumulation of 2.8 inches (NOAA, 2019).

1.5.6 Current and Future Land Use

Prior to the 1970s, the current location of the Chesterfield County Airport was largely

undeveloped. Construction of the airport began in 1972 and included the acquisition of 556

acres of land for runways, hangar facilities, terminal buildings, and parking areas.

Chesterfield Limited AASF includes three buildings and two aircraft parking areas that are

used for office and hangar purposes and serve as an aviation detachment for the 2-224th

Aviation Battalion. The current lease of the Chesterfield Limited AASF property began in 2013,

and VAARNG has plans to renew the lease. Future land use is not expected to change (EEE,

2018).
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Facility Location

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

Intermap, INCREMENT P, NRCan, Esri Japan, METI,

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Facility Boundary

Chesterfield Airport Boundary

^_

Chesterfield AASF

8
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Swift Creek

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Groundwater Features

Base Map: Source: Esri, DigitalGlobe, GeoEye,

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

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0 0.5 1 2

Miles

Legend

Facility Boundary

Chesterfield Airport Boundary

Water Body

Wetland

River/Stream

Canal/Ditch

Inferred Groundwater Flow Direction

Geology

Unconsolidated sand and gravel

Bacons Castle Formation

Terrace deposits

Petersburg Granite

Wells

!P Domestic

!C( Public/Municipal/Government

A! Unknown

9
Crosby lake

P roctor s Creek

HornersRun

Po cos hock C reek

Reedy Cre ek

Licking Creek

Great B ranch

Crooked Branch

Lic king

Creek

Swift Creek

F alli ngCr eek

K ni g sl a nd Creek

Watch Run

Second

Branch-Licking

Creek Watershed Third Branch-Swift

Creek Watershed

Falling

Creek

Watershed

Proctors

Creek-James

River Watershed

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Surface Water Features

Base Map: Source: Esri, DigitalGlobe, GeoEye,

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

C:\Users\stankevichm\OneDrive - AECOM Directory\ARNG_PFAS_GIS_60552172\MXDs\VA\Chesterfield_AASF_Figures\Chesterfield_AASF_PA_Figures\Fig_1-3_Chesterfield_AASF_Surface_Water.mxd

0 0.5 1 2

Miles

Legend

Facility Boundary

Chesterfield Airport

Boundary

Water Body

Wetland

River/Stream

Canal/Ditch

Surface Water Flow

Direction

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2. Fire Training Areas

FTAs were investigated during the PA for potential releases of AFFF during training activities. No

FTAs were identified within the current AASF facility during the PA through interviews or EDRTM

reports. The personnel interviewed had institutional knowledge spanning the entire period of

interest (2013-present).
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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. Two non-FTAs where AFFF 

was stored and/or potentially released were identified during the PA. A description of each nonFTA is presented below, and the non-FTAs are shown on Figure 3-1. 

Building 7431

Building 7431 is a one-story building located at 7431 Airfield Drive, North Chesterfield, VA 23237. 

The building is approximately 9,500 square ft with about 1,000 square ft used for office space. 

The remaining portion is a hangar for housing helicopters and storing maintenance chemicals and 

materials. Building 7431 was constructed in 1979, and office space renovations were completed 

in 2010. The previous tenant was A.T. Massey Corporation (EEE, 2018). VAARNG acquired the 

property from the county of Chesterfield, VA in May 2013.

During the VSI, no evidence of AFFF or fire extinguishers having been stored in the hangar was 

found. According to an interview with the Chesterfield County Airport Operations Manager, AFFF 

has not been stored historically or currently at Building 7431. A mobile Tri-MaxTM fire extinguisher 

was observed to be staged outside the southern corner of the hangar. The contents of the TriMaxTM fire extinguisher were unknown; however, the Operations Manager stated that the TriMaxTM had never been used or tested to his knowledge, which spans back to 2001 and covers the 

entire period of interest (2013-present).

Building 7417

Building 7417 is located at 7417 Airfield Drive, North Chesterfield, VA 23237. The construction of 

Building 7417 was completed in 2005, and VAARNG acquired the property from the Chesterfield 

County, VA in May 2013. The building footprint is approximately 10,000 square ft. The interior is 

used as a large hangar space that has a clear-span frame and a concrete slab floor. The hangar 

houses several aircraft and stores maintenance chemicals and materials. 

Building 7417 does not contain a fire suppression system; however, a sensor wire does trigger a 

fire alarm when a fire occurs. The building is equipped with ABC fire extinguishers. According to 

an interview with the Chesterfield County Airport Operations Manager, AFFF has not been stored 

historically nor is it stored currently at Building 7417. 
Building 7417

Building 7431

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Non-Fire Training Areas

Base Map: Source: Esri, DigitalGlobe, GeoEye,

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

C:\Users\stankevichm\OneDrive - AECOM Directory\ARNG_PFAS_GIS_60552172\MXDs\VA\Chesterfield_AASF_Figures\Chesterfield_AASF_PA_Figures\Fig_3-1_Chesterfield_AASF_Non-Fire_Training_Areas.mxd

0 175 350 700

Feet

Legend

Potential PFAS Release

No Suspected Release

Facility Boundary

Chesterfield Airport Boundary

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4. Emergency Response Areas

Emergency responses to crashes sometimes require flame suppression, which may result in the

release of PFAS to the environment in the form of AFFF. No emergency response areas were

identified within the current AASF facility during the PA through interviews or EDRTM reports. The

Chesterfield County Airport Operations Manager stated with first-hand knowledge that no crashes

or emergencies resulting in AFFF use had occurred during his tenure (18 years), but it is unknown

whether any crashes occurred before 2001. All emergency services for the current AASF are

provided by the Chesterfield County Fire Station #15.
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

15

5. Adjacent Sources

Two potential off-facility sources of PFAS adjacent to the current AASF, not under the control of 

the VAARNG, were identified during the PA. A description of each adjacent source is presented 

below, and the adjacent sources are shown on Figure 5-1.

Chesterfield County Fire Station #15

Chesterfield County Fire Station #15 is located at 7300 Airfield Drive, North Chesterfield, VA 

23237, in the adjoining property southeast of Chesterfield Limited AASF. The fire station resides 

on approximately 0.75 acres and also includes a helipad and backyard field. The fire station 

provides emergency services to the Chesterfield Limited AASF.

An interview with the Battalion Chief for Chesterfield Fire & EMS revealed that minor amounts of 

AFFF were released through weekly spray pattern testing of equipment in the field adjacent to 

and behind the fire station from 1989 until 2017, when there were some equipment issues. While 

weekly spray pattern testing currently occurs in the same location with water, residual PFAS may 

have been released from the previous testing of equipment with AFFF. It is unknown what may 

have occurred before the Battalion Chief’s tenure starting in 2002. 

The AFFF products used by the station are National Foam Universal Plus 3x6 AR-AFFF, National 

Foam Universal Goal 1x3 AR-AFFF, and Ansul AFFF, varying in concentration from 1% to 6% and 

stored in 5-gallon buckets and two totes of 275- and 330-gallon capacity. A foam response trailer 

is currently stationed at Fire Station #15. Two P-19 Aircraft Rescue Firefighting (ARFF) vehicles 

are also associated with the fire station. An old fire engine is reported to have leaked product at 

an unknown off-site location. No fire training activities have been or are currently conducted by 

the Chesterfield Fire & EMS on AASF property. The Chesterfield County Fire Station #15 is 

considered an off-facility source area.

2013 Wildland Fire

In 2013, a large brush fire occurred between Route 288 and Courthouse Road, adjacent to the 

southern boundary of the Chesterfield County Airport. The brush fire impacted approximately 75 

acres. First responders reportedly used only water to extinguish the fire, and Chesterfield Fire & 

EMS staff confirmed that no AFFF was used in the emergency response. 
Reedy Creek

2013 Wildland Fire

Chesterfield County Fire Station 15

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4/30/2020

1:9,600 ­ Figure 5-1 PM RG 4/30/2020

12420 Milestone Center Drive

Germantown, MD 20876

Adjacent Sources

Base Map: Source: Esri, DigitalGlobe, GeoEye,

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

C:\Users\stankevichm\OneDrive - AECOM Directory\ARNG_PFAS_GIS_60552172\MXDs\VA\Chesterfield_AASF_Figures\Chesterfield_AASF_PA_Figures\Fig_5-1_Chesterfield_AASF_Adjacent_Sources.mxd

0 400 800 1,600

Feet

Legend

Potential PFAS Release

No Suspected Release

Facility Boundary

Chesterfield Airport Boundary

Wetland

River/Stream

16
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

17

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 – Tri-MaxTM Storage Area

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 Chesterfield AASF include site workers, construction workers, 

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

which specific receptors could potentially be exposed to PFAS.

AOI 1: Tri-MaxTM Storage Area

AOI 1 includes Building 7431 where a Tri-MaxTM fire extinguisher filled with unknown contents 

was observed outside the southern corner of the building during the site visit. 

Any AFFF releases from the Tri-MaxTM fire extinguisher may have occurred on paved or grassy 

surfaces outside Building 7431. Ground-disturbing activities in these grassy areas as well as 

beneath the pavement may result in potential exposure to PFAS in surface soils via ingestion and 

inhalation of dust particles for site workers and construction workers. The facility is within a onemile radius of residential areas, so nearby off-facility residents and trespassers may also be 

exposed to airborne soil particles resulting from ground disturbing activities. AFFF releases to the 

paved surfaces could have infiltrated the subsurface via cracks in the pavement or joints between 

areas that are paved with different materials. Ground-disturbing activities may result in potential 

exposure to PFAS in subsurface soils and shallow groundwater via ingestion for construction 

workers.

Potential AFFF releases may be carried by run-off into Reedy Creek, a tributary of James River. 

Off-facility receptors such as residents and recreational users may be exposed to PFAS via 

ingestion of surface water and sediment in James River and its tributaries or via the ingestion of 

fish affected by PFAS. 

PFAS are water soluble and can migrate readily from soil to groundwater via leaching. No 

groundwater wells exist at the facility, and the facility is on municipal water provided by 

Chesterfield County. Chesterfield County sources its water from Lake Chesdin, located 

approximately 12 miles away (Chesterfield County, 2019). Due to the distance of the water source, 

site workers are unlikely to be exposed to potentially impacted groundwater. Due to the existence 

of multiple domestic and public groundwater wells in the surrounding area of the facility, residents 

may be potentially exposed to groundwater via ingestion. 
A!

!C(

A!

Kingsland Creek

Reedy Creek

2013 Wildland Fire

Building 7417

Third Branch-Swift

Creek Watershed

Falling

Creek

Watershed

Proctors

Creek-James

River Watershed

Chesterfield County Fire Station 15

Building 7431

AOI 1

CLIENT

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4/30/2020

1:18,000 ­ Figure 6-1 PM RG 4/30/2020

12420 Milestone Center Drive

Germantown, MD 20876

Area of Interest

Base Map: Source: Esri, DigitalGlobe, GeoEye,

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

C:\Users\stankevichm\OneDrive - AECOM Directory\ARNG_PFAS_GIS_60552172\MXDs\VA\Chesterfield_AASF_Figures\Chesterfield_AASF_PA_Figures\Fig_6-1_Chesterfield_AASF_AOIs.mxd

0 750 1,500 3,000

Feet

Legend

Area of Interest

Potential PFAS Release

No Suspected Release

Facility Boundary

Chesterfield Airport

Boundary

Water Body

Wetland

River/Stream

Surface Water Flow

Direction

Inferred Groundwater

Flow Direction

A! Unknown Well

18
SOURCE PATHWAY RECEPTOR

AOI 1

Potential AFFF 

release from TriMax fire 

extinguishers

Human 

Activities

Precipitation/ 

Run-Off

Leaching/ 

Infiltration

Airborne Soil 

particulate

Surface Soil 

at AOI

Surface 

Water/ 

sediment

Subsurface 

Soil

Groundwater

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

LEGEND

Figure 6-2

Preliminary Conceptual Site Model

AOI 1 Tri-Max Storage Area

PFAS in 

Surface Soil/

Surface 

Water

/ / / /

/ / / /

/ / / /

/ / / /

/ / / /

NOTES

1. The resident and recreational users refer to 

off-site receptors.

2. Inhalation of dust for off-site receptors is likely 

insignificant. 

3. Human consumption of fish potentially 

affected by PFAS is possible.

Site 

Worker

Construction 

Worker Resident1,2 Trespasser/Recreational User1,3

Site 

Worker

Construction 

Worker Resident1,2 Trespasser/Recreational User1,3

19
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

20

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 Chesterfield Limited AASF. The PA findings 

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

Findings

One AOI related to potential PFAS release was identified Chesterfield Limited AASF based on 

PA data (Figure 7-1) and is summarized in Table 7-1 below:

Table 7-1: AOIs at Chesterfield Limited AASF

Area of Interest Name Used by Potential Release Dates

AOI 1 Tri-MaxTM Storage Area VAARNG Unknown

The Chesterfield County Fire Station #15 was identified as an off-facility potential PFAS source 

and lies in the inferred downgradient groundwater flow path. The fire station conducts weekly 

spray pattern testing of AFFF equipment in the field adjacent to and behind the fire station. 

Additionally, large quantities of AFFF were found housed in the fire station and also stored in a P19 ARFF vehicle and foam response trailer. The Chesterfield County Fire Station #15 adjacent 

source is shown on Figure 7-1. While PFAS have likely been released to the environment, 

Chesterfield AASF is unlikely to be affected because it appears to be upgradient of the fire station, 

and surface water runoff is likely to the southeast towards Reedy Creek.

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. Gathered information has a degree of uncertainty due to the absence of written 

documentation, the limited number of personnel with direct knowledge, the time passed since 

PFAS were 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 7-1 summarizes the uncertainties associated with the PA:

Table 7-1. Uncertainties within the PA

Location Source of Uncertainty

AOI 1: Tri-MaxTM Storage 

Area

VAARNG personnel were unaware of the presence of 

the Tri-MaxTM fire extinguisher stationed outside 
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

21

Location Source of Uncertainty

Building 7431 and could not confirm the contents of the 

extinguisher. 

General During the interview process, no VAARNG personnel 

were available to be interviewed, although the 

Chesterfield County Airport Operations Manager had 

institutional knowledge covering the entire period of 

interest (2013-present). The usage of Building 7431 by 

the prior tenants, A.T. Massey Corporation, is unknown, 

as no representative could be reached for an interview. 

Chesterfield County Fire 

Station #15 (Adjacent 

Source)

It is unknown how much AFFF is released during the 

weekly equipment testing. The Battalion Chief stated 

that there were no FTAs using foam at the fire station. 

However, it is unknown what occurred before his tenure 

starting in 2002. 

Potential Emergency 

Response Locations

The Chesterfield County Airport Operations Manager 

stated with first-hand knowledge that no crashes or 

emergencies resulting in AFFF use had occurred during 

his tenure (18 years), but it is unknown whether any 

crashes occurred before 2001. 

Potential Future Actions

Interviews with current VAARNG facility staff whose first-hand knowledge at Chesterfield AASF 

span 2013 - present indicate that ARNG activities may have resulted in a potential PFAS release 

at the AOI identified during the PA. 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 7-3 summarizes the rationale used to determine if the AOI should 

be considered for further investigation under the CERCLA process and undergo an SI. 

Table 7-3: PA Findings Summary

Area of Interest AOI Location Rationale Potential Future Action

AOI 1: Tri-MaxTM 

Storage Area

37°24’21.4” N; 

77°31’14.0” W

Storage of Tri-MaxTM fire 

extinguisher

Proceed to an SI, focus 

on soil, groundwater, 

surface water, sediment

ARNG will evaluate the need for an SI at Chesterfield AASF based on the potential receptors, the 

potential migration of PFAS contamination off the facility, and the availability of resources. 
Reedy Creek

2013 Wildland Fire

Building 7417

Chesterfield County Fire Station 15

Building 7431

AOI 1

CLIENT

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4/30/2020

1:15,600 ­ Figure 7-1 PM RG 4/30/2020

12420 Milestone Center Drive

Germantown, MD 20876

Summary of Findings

Base Map: Source: Esri, DigitalGlobe, GeoEye,

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

C:\Users\stankevichm\OneDrive - AECOM Directory\ARNG_PFAS_GIS_60552172\MXDs\VA\Chesterfield_AASF_Figures\Chesterfield_AASF_PA_Figures\Fig_7-1_Chesterfield_AASF_Summary.mxd

0 650 1,300 2,600

Feet

Legend

Area of Interest

Potential PFAS Release

No Suspected Release

Facility Boundary

Chesterfield Airport Boundary

Water Body

Wetland

River/Stream

22
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

23

8. References

EEE Consulting, Inc. (EEE). 2018. Environmental Condition of Property Report, Phase I

Environmental Site Assessment for the Lease Renewal of the VAARNG Aviation Detachment

Office/Hangar Space, Chesterfield County Airport. August.

Chesterfield County, 2019. Chesterfield County’s Water Sources.

https://www.chesterfield.gov/DocumentCenter/View/5266/Chesterfield-County-WaterSources-Map-PDF?bidId= (Accessed April 2020).

Chesterfield County, Department of General Services, Environmental Division (Chesterfield

County). 2015. Stormwater Pollution Prevention Plan for Chesterfield County Airport. January.

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

Practice. January.

National Oceanic and Atmospheric Administration (NOAA). 2019. Richmond, VA Monthly &

Annual Summary.

https://www.weather.gov/media/akq/climateRECORDS/RIC_Climate_Records.pdf (Accessed

April 2019).

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

Preliminary Assessments under CERCLA. September.

Virginia Department of Mines, Minerals and Energy. n.d. Division of Geology and Mineral

Resources. https://www.dmme.virginia.gov/webmaps/DGMR/ (Accessed April 2019).
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

Appendix A

Data Resources
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, VA

Data resources will be provided separately on CD. Data resources for Chesterfield Limited

AASF include: 

Stormwater Pollution Prevention Plan

• 2015 Stormwater Pollution Prevention Plan for Chesterfield County Airport

Environmental Data Resources, Inc.TM Geocheck Report

• 2019 Environmental Data Resources, IncTM. Geocheck Report for Chesterfield Limited AASF, VA 

Miscellaneous Data Resources

• 2013 Chesterfield Limited AASF Deed of Lease No. L04474

• 2013 Environmental Condition of Property Report, Phase I Environmental Site Assessment

for the Proposed VAARNG Aviation Detachment, Office/Hangar Space, Chesterfield County

Airport

• 2018 Environmental Condition of Property Report, Phase I Environmental Site Assessment

for the Lease Renewal of the VAARNG Aviation Detachment Office/Hangar Space,

Chesterfield County Airport
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

Appendix B

Preliminary Assessment Documentation
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

Appendix B.1

Interview Records







PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

Appendix B.2

Visual Site Inspection Checklists
Visual Site Inspection Checklist

Names(s) of people performing VSI:

Recorded by:

ARNG Contact:

Date and Time:

Method of visit (walking, driving, adjacent):

Source/Release Information

Site Name / Area Name / Unique ID:

Historic Site Use (Brief Description):

Current Site Use (Brief Description):

Physical barriers or access restrictions:

1. Was PFAS used (or spilled) at the site/area? Y / N

1a. If yes, document how PFAS was used and usage time (e.g., fire fighting training 2001 to 2014):

2. Has usage been documented? Y / N

2a. If yes, keep a record (place electronic files on a disk):

3. What types of businesses are located near the site? Industrial / Commercial / Plating / Waterproofing / Residential

3a. Indicate what businesses are located near the site

4. Is this site located at an airport/flightline? Y / N

4a. If yes, provide a description of the airport/flightline tenants:

Site / Area Acreage:

Page 1 of 4

February 4, 2019

Walking

Building 7417 (VAARNG Hangar)

approximately 0.33 acres storing AFFF Storage

Hangar storage

Chesterfield Airport perimeter fence

No AFFF used or stored at the hangar

NA

Wide variety of industrial/office/church/gymnastics facilities west of Chesterfield 

runway

Yes, the Chesterfield Limited AASF is located at the Chesterfield 

County Airport

Hangar storage
Visual Survey Inspection Log

1. Does the facility have a fire suppression system? Y / N

1a. If yes, indicate which type of AFFF has been used:

1b. If yes, describe maintenance schedule/leaks:

1c. If yes, how often is the AFFF replaced:

1d. If yes, does the facility have floor drains and where do they lead? Can we obtain an as built drawing?

Transport / Pathway Information

1. Does site/area drainage flow off installation? Y / N

1a. If so, note observation and location:

2. Is there channelized flow within the site/area? Y / N

2a. If so, please note observation and location:

3. Are monitoring or drinking water wells located near the site? Y / N

3a. If so, please note the location:

4. Are surface water intakes located near the site? Y / N

4a. If so, please note the location:

5. Can wind dispersion information be obtained? Y / N

5a. If so, please note and observe the location.

6. Does an adjacent non-ARNG PFAS source exist? Y / N

6a. If so, please note the source and location.

6b. Will off-site reconnaissance be conducted? Y / N

Other Significant Site Features:

Migration Potential:

Page 2 of 4

No, a sensor wire triggers an alarm when fires occur, but no suppression system 

exists. ABC extinguisher present in the hangar.

NA

NA

NA

Site drainage channels are unknown (SWPPP requested), but a wetland 

exists approximately 0.1 mile to the east and south

No drainage ditches were observed, but SWPPP will clarify

Unknown, information requested

See previous response regarding wetland

No

Chesterfield County Fire Station 15 exists approximately 0.15 miles southwest. 

AFFF storage and maintenance with AFFF releases occurs there.
Visual Survey Inspection Log

1. Has the infrastructure changed at the site/area? Y / N

1a. If so, please describe change (ex. Structures no longer exist):

2. Is the site/area vegetated? Y / N

2a. If not vegetated, briefly describe the site/area composition:

3. Does the site or area exhibit evidence of erosion? Y / N

3a. If yes, describe the location and extent of the erosion: 

4. Does the site/area exhibit any areas of ponding or standing water? Y / N

4a. If yes, describe the location and extent of the ponding: 

Receptor Information

1. Is access to the site restricted? Y / N

1a. If so, please note to what extent:

2. Who can access the site?

2a. Circle all that apply, note any not covered above:

3. Are residential areas located near the site? Y / N

3a. If so, please note the location/distance:

4. Are any schools/day care centers located near the site? Y / N

4a. If so, please note the location/distance/type:

5. Are any wetlands located near the site? Y / N

5a. If so, please note the location/distance/type:

Significant Topographical Features:

Site Workers / Construction Workers / Trespassers / Residential / Recreational

Users / Ecological

Page 3 of 4

Building 7417 was constructed in 2005

The storage area is paved, but wooded area exists to the east. Grass exists in 

patches around the hangar.

No observed erosion

No standing water observed, but NWI shows wetlands nearby

Perimeter fence restricts access to the hangar area

Chesterfield Airport staff, VAARNG staff

Residences and recreational field exist approximately 0.5 miles southeast of the 

site

Nana Daycare is approximately 1 mile northeast of the Hangar; OB 

Gates Elementary School is approximately 1.3 miles southeast

Yes, see previous response regarding wetlands
Visual Site Inspection Checklist

Names(s) of people performing VSI:

Recorded by:

ARNG Contact:

Date and Time:

Method of visit (walking, driving, adjacent):

Source/Release Information

Site Name / Area Name / Unique ID:

Historic Site Use (Brief Description):

Current Site Use (Brief Description):

Physical barriers or access restrictions:

1. Was PFAS used (or spilled) at the site/area? Y / N

1a. If yes, document how PFAS was used and usage time (e.g., fire fighting training 2001 to 2014):

2. Has usage been documented? Y / N

2a. If yes, keep a record (place electronic files on a disk):

3. What types of businesses are located near the site? Industrial / Commercial / Plating / Waterproofing / Residential

3a. Indicate what businesses are located near the site

4. Is this site located at an airport/flightline? Y / N

4a. If yes, provide a description of the airport/flightline tenants:

Site / Area Acreage:

Page 1 of 4

February 4, 2019

Walking

Building 7431 (VAARNG Hangar)

approximately 0.33 acres storing AFFF Storage

Hangar storage

Chesterfield Airport perimeter fence

No AFFF used at the hangar, but a Tri-Max mobile extinguisher is staged outside on the southern corner of the hangar

NA

Wide variety of industrial/office/church/gymnastics facilities west of Chesterfield 

runway

Yes, the Chesterfield Limited AASF is located at the Chesterfield 

County Airport

Hangar storage
Visual Survey Inspection Log

1. Does the facility have a fire suppression system? Y / N

1a. If yes, indicate which type of AFFF has been used:

1b. If yes, describe maintenance schedule/leaks:

1c. If yes, how often is the AFFF replaced:

1d. If yes, does the facility have floor drains and where do they lead? Can we obtain an as built drawing?

Transport / Pathway Information

1. Does site/area drainage flow off installation? Y / N

1a. If so, note observation and location:

2. Is there channelized flow within the site/area? Y / N

2a. If so, please note observation and location:

3. Are monitoring or drinking water wells located near the site? Y / N

3a. If so, please note the location:

4. Are surface water intakes located near the site? Y / N

4a. If so, please note the location:

5. Can wind dispersion information be obtained? Y / N

5a. If so, please note and observe the location.

6. Does an adjacent non-ARNG PFAS source exist? Y / N

6a. If so, please note the source and location.

6b. Will off-site reconnaissance be conducted? Y / N

Other Significant Site Features:

Migration Potential:

Page 2 of 4

No, ABC extinguisher present in the hangar. Tri-Max extinguisher staged outside 

hangar

NA, no testing of Tri-Max testing. Never known to have been used.

NA

NA

Site drainage channels are unknown (SWPPP requested), but a wetland 

exists approximately 0.1 mile to the east and south

No drainage ditches were observed, but SWPPP will clarify

Unknown, information requested

See previous response regarding wetland

No

Chesterfield County Fire Station 15 exists approximately 0.15 miles southwest. 

AFFF storage and maintenance with AFFF releases occurs there.
Visual Survey Inspection Log

1. Has the infrastructure changed at the site/area? Y / N

1a. If so, please describe change (ex. Structures no longer exist):

2. Is the site/area vegetated? Y / N

2a. If not vegetated, briefly describe the site/area composition:

3. Does the site or area exhibit evidence of erosion? Y / N

3a. If yes, describe the location and extent of the erosion: 

4. Does the site/area exhibit any areas of ponding or standing water? Y / N

4a. If yes, describe the location and extent of the ponding: 

Receptor Information

1. Is access to the site restricted? Y / N

1a. If so, please note to what extent:

2. Who can access the site?

2a. Circle all that apply, note any not covered above:

3. Are residential areas located near the site? Y / N

3a. If so, please note the location/distance:

4. Are any schools/day care centers located near the site? Y / N

4a. If so, please note the location/distance/type:

5. Are any wetlands located near the site? Y / N

5a. If so, please note the location/distance/type:

Significant Topographical Features:

Site Workers / Construction Workers / Trespassers / Residential / Recreational

Users / Ecological

Page 3 of 4

Building 7431was acquired by VAARNG approximately 5 years ago

The storage area is paved, but wooded area exists to the east. Grass exists in 

patches around the hangar.

No observed erosion

No standing water observed, but NWI shows wetlands nearby

Perimeter fence restricts access to the hangar area

Chesterfield Airport staff, VAARNG staff

Residences and recreational field exist approximately 0.5 miles southeast of the 

site

Nana Daycare is approximately 1 mile northeast of the Hangar; OB Gates 

Elementary School is approximately 1.3 miles southeast

Yes, see previous response regarding wetlands
Visual Site Inspection Checklist

Names(s) of people performing VSI:

Recorded by:

ARNG Contact:

Date and Time:

Method of visit (walking, driving, adjacent):

Source/Release Information

Site Name / Area Name / Unique ID:

Historic Site Use (Brief Description):

Current Site Use (Brief Description):

Physical barriers or access restrictions:

1. Was PFAS used (or spilled) at the site/area? Y / N

1a. If yes, document how PFAS was used and usage time (e.g., fire fighting training 2001 to 2014):

2. Has usage been documented? Y / N

2a. If yes, keep a record (place electronic files on a disk):

3. What types of businesses are located near the site? Industrial / Commercial / Plating / Waterproofing / Residential

3a. Indicate what businesses are located near the site

4. Is this site located at an airport/flightline? Y / N

4a. If yes, provide a description of the airport/flightline tenants:

Site / Area Acreage:

Page 1 of 4

February 4, 2019

Walking

Chesterfield County Fire Station 15

approximately 0.75 acres including helipad, and backyard area

Fire Station 15

Access is not restricted

Yes, National and Ansul AFFF is stored at the Fire Station and weekly spray pattern 

testing has resulted in AFFF releases to the field adjacent to the fire station

Records are not available for equipment testing

Wide variety of industrial/office/church/gymnastics facilities west of Chesterfield 

runway

Yes, the Chesterfield Limited AASF is located approximately 0.2 

miles east of the Chesterfield County Airport

Fire Station 15
Visual Survey Inspection Log

1. Does the facility have a fire suppression system? Y / N

1a. If yes, indicate which type of AFFF has been used:

1b. If yes, describe maintenance schedule/leaks:

1c. If yes, how often is the AFFF replaced:

1d. If yes, does the facility have floor drains and where do they lead? Can we obtain an as built drawing?

Transport / Pathway Information

1. Does site/area drainage flow off installation? Y / N

1a. If so, note observation and location:

2. Is there channelized flow within the site/area? Y / N

2a. If so, please note observation and location:

3. Are monitoring or drinking water wells located near the site? Y / N

3a. If so, please note the location:

4. Are surface water intakes located near the site? Y / N

4a. If so, please note the location:

5. Can wind dispersion information be obtained? Y / N

5a. If so, please note and observe the location.

6. Does an adjacent non-ARNG PFAS source exist? Y / N

6a. If so, please note the source and location.

6b. Will off-site reconnaissance be conducted? Y / N

Other Significant Site Features:

Migration Potential:

Page 2 of 4

No, fire suppression system is present at the Fire Station

Weekly spray pattern testing of AFFF equipment occurs at the Fire Station

Unknown whether AFFF is ever returned/disposed of/replaced

SWPPP requested

Site drainage channels are unknown (SWPPP requested), but wetlands

exists approximately 0.1 mile to the north, east , south, and west

No drainage ditches were observed, but SWPPP will clarify

Unknown, information requested

See previous response regarding wetland

No

This Fire Station is an adjacent source. Other adjacent sources may include non-VAARNG airport

hangars (potential for AFFF storage/use), industrial area west of runway (includes Pohlig Packaging and

custom metal fabricators
Visual Survey Inspection Log

1. Has the infrastructure changed at the site/area? Y / N

1a. If so, please describe change (ex. Structures no longer exist):

2. Is the site/area vegetated? Y / N

2a. If not vegetated, briefly describe the site/area composition:

3. Does the site or area exhibit evidence of erosion? Y / N

3a. If yes, describe the location and extent of the erosion: 

4. Does the site/area exhibit any areas of ponding or standing water? Y / N

4a. If yes, describe the location and extent of the ponding: 

Receptor Information

1. Is access to the site restricted? Y / N

1a. If so, please note to what extent:

2. Who can access the site?

2a. Circle all that apply, note any not covered above:

3. Are residential areas located near the site? Y / N

3a. If so, please note the location/distance:

4. Are any schools/day care centers located near the site? Y / N

4a. If so, please note the location/distance/type:

5. Are any wetlands located near the site? Y / N

5a. If so, please note the location/distance/type:

Significant Topographical Features:

Site Workers / Construction Workers / Trespassers / Residential / Recreational

Users / Ecological

Page 3 of 4

Fire Station 15 construction era unknown, information requested

Wooded areas exist north, east, south, and west of Fire Station.

No observed erosion

No standing water observed, but NWI shows wetlands nearby

Access to the Fire Station is not restricted

Anyone, although only FD staff regularly visit the station

Residences and recreational field exist approximately 0.5 miles southeast of the 

site

Nana Daycare is approximately 1 mile northeast of the site; OB Gates Elementary 

School is approximately 1.3 miles southeast

Yes, see previous response regarding wetlands
PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

Appendix B.3

Conceptual Site Model Information



PFAS Preliminary Assessment Report

Chesterfield Limited AASF, Virginia

Appendix C

Photographic Log
Appendix C - Photographic Log

Army National Guard, Preliminary 

Assessment for PFAS

Chesterfield AASF North Chesterfield, Virginia

Preliminary Assessment Report

Chesterfield AASF

Perfluorooctane-Sulfonic Acid (PFOS) and

Perfluorooctanoic Acid (PFOA) Impacted Sites

ARNG Installations, Nationwide

Description:

AFFF response trailer stored 

at the off-facility Chesterfield 

County Fire and EMS Fire 

Station Number 15

Orientation:

Southeast

Date 2/4/2019

Time 14:29

Photograph No. 1

Description:

AFFF response trailer stored 

at the off-facility Chesterfield 

County Fire and EMS Fire 

Station Number 15

Orientation:

Southeast

Date 2/4/2019

Time 14:29

Photograph No. 2

AECOM Page 1 of 4
Appendix C - Photographic Log

Army National Guard, Preliminary 

Assessment for PFAS

Chesterfield AASF North Chesterfield, Virginia

Preliminary Assessment Report

Chesterfield AASF

Perfluorooctane-Sulfonic Acid (PFOS) and 

Perfluorooctanoic Acid (PFOA) Impacted Sites 

ARNG Installations, Nationwide

Description:

Ansulte 3% AFFF stored at 

the off-facility Chesterfield 

County Fire and EMS Fire 

Station Number 15

Orientation:

Southeast

Date 2/4/2019

Time 14:29

Photograph No. 3

Description:

Parking lot and field adjacent 

to Chesterfield County Fire 

and EMS Fire Station Number 

15 where maintenance 

activities resulted in the 

release of AFFF

Orientation:

Northeast

Date 2/4/2019

Time 14:33

Photograph No. 4

AECOM Page 2 of 4
Appendix C - Photographic Log

Army National Guard, Preliminary 

Assessment for PFAS

Chesterfield AASF North Chesterfield, Virginia

Preliminary Assessment Report

Chesterfield AASF

Perfluorooctane-Sulfonic Acid (PFOS) and 

Perfluorooctanoic Acid (PFOA) Impacted Sites 

ARNG Installations, Nationwide

Description:

Parking lot and field adjacent 

to Chesterfield County Fire 

and EMS Fire Station Number 

15 where maintenance 

activities resulted in the 

release of AFFF

Orientation:

North

Date 2/4/2019

Time 14:35

Photograph No. 5

Description:

Tri-Max 30 AFFF mobile fire 

extinguisher stored outside 

VAARNG hangar 7431

Orientation:

Northeast

Date 2/4/2019

Time 14:49

Photograph No. 6

AECOM Page 3 of 4
Appendix C - Photographic Log

Army National Guard, Preliminary 

Assessment for PFAS

Chesterfield AASF North Chesterfield, Virginia

Preliminary Assessment Report

Chesterfield AASF

Perfluorooctane-Sulfonic Acid (PFOS) and 

Perfluorooctanoic Acid (PFOA) Impacted Sites 

ARNG Installations, Nationwide

Description:

VAARNG hangar 7417 

ceiling; no fire suppression 

system present

Orientation:

West

Date 2/4/2019

Time 14:54

Photograph No. 7

AECOM Page 4 of 4