FINAL

Preliminary Assessment Report

Roseville Armory, California

Perfluorooctane-Sulfonic Acid (PFOS) and Perfluorooctanoic 

Acid (PFOA) Impacted Sites

ARNG Installations, Nationwide

January 2020

Prepared for:

Army National Guard Headquarters

111 S. George Mason Drive

Arlington, VA 22204

US Army Corps of Engineers, Baltimore District

2 Hopkins Plaza

Baltimore, MD 21201

Prepared by:

AECOM

12420 Milestone Center Drive, Suite 150

Germantown, MD 20876

aecom.com

Contract Number: W912DR-12-D-0014

Delivery Order: W912DR17F0192
PFAS Preliminary Assessment Report

Roseville Armory, California

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Table of Contents

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

1. Introduction ........................................................................................................................5

1.1 Authority and Purpose ..............................................................................................5

1.2 Preliminary Assessment Methods .............................................................................5

1.3 Report Organization ..................................................................................................6

1.4 Facility Location and Description...............................................................................6

1.5 Facility Environmental Setting ...................................................................................7

Soil .................................................................................................................7

Geology .........................................................................................................7

Hydrogeology .................................................................................................8

Hydrology .......................................................................................................8

Climate ...........................................................................................................8

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

2. Fire Training Areas ...........................................................................................................13

3. Non-Fire Training Areas ...................................................................................................15

3.1 Firetruck Parking and Storage Yard ........................................................................15

4. Emergency Response Areas ............................................................................................17

5. Adjacent Sources .............................................................................................................19

5.1 City of Roseville Fire Department ............................................................................19

5.2 All American Speedway ..........................................................................................19

6. Conceptual Site Model .....................................................................................................21

6.1 AOI 1: Firetruck Parking and Storage Yard ............................................................21

7. Conclusions .....................................................................................................................25

7.1 Findings ..................................................................................................................25

7.2 Uncertainties ...........................................................................................................25

7.3 Potential Future Actions ..........................................................................................26

8. References ......................................................................................................................29
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Tables

Table ES-1 AOIs at Roseville Armory

Table 7-1 AOIs at Roseville Armory

Table 7-2 Uncertainties

Table 7-3 PA Findings Summary

Figures

Figure ES-1 Summary of Findings

Figure ES-2 Conceptual Site Model, Roseville Armory, CA

Figure 1-1 Roseville Armory Facility Location

Figure 1-2 Groundwater Features

Figure 1-3 Surface Water Features

Figure 3-1 Non-Fire Training Areas

Figure 6-1 Areas of Interest

Figure 6-2 Conceptual Site Model, Roseville Armory, CA

Figure 7-1 Summary of Findings

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

AECOM AECOM Technical Services, Inc.

AEG Applied Engineering and Geology, Inc.

AFFF aqueous film forming foam

amsl above mean sea level

AOI area of interest

ARNG Army National Guard

bgs below ground surface

BPE Black Point Environmental, Inc.

CAARNG California Army National Guard

CERCLA Comprehensive Environmental Response, Compensation, and Liability Act

CSM conceptual site model

EDR Environmental Data Resources

°F degrees Fahrenheit

ft feet

FTA fire training area

NASCAR National Association for Stock Car Auto Racing

PA Preliminary Assessment

PFAS per- and poly-fluoroalkyl substances

PFOA perfluorooctanoic acid

PFOS perfluorooctanesulfonic acid

ppt parts per trillion

SI Site Inspection

Sellens Sellens Consulting LLC

US United States

USACE United States Army Corps of Engineers

USEPA United States Environmental Protection Agency

USGS United States Geological Survey

VSI visual site inspection
PFAS Preliminary Assessment Report

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PFAS Preliminary Assessment Report

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Executive Summary

The United States (US) Army Corps of Engineers (USACE) Baltimore District on behalf of the

Army National Guard (ARNG)-Installations & Environment Division, Cleanup Branch contracted

AECOM Technical Services, Inc. (AECOM) to perform Preliminary Assessments (PAs) and Site

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

Impacted Sites at ARNG Facilities Nationwide. The ARNG is assessing the potential exposure to

humans and the effect on the environment related to processes at facilities that used per- and

poly-fluoroalkyl substances (PFAS) (a suite of related chemicals), primarily in the form of aqueous

film forming foam (AFFF) released during firefighting activities or training, although other PFAS

sources are possible.

AECOM completed a PA for PFAS at the California Army National Guard (CAARNG) Roseville

Armory in Roseville, California, to assess potential PFAS release areas and exposure pathways

to receptors. The tasks performed in this PA include the following:

· Reviewed available administrative record documents and Environmental Data Resources,

Inc. report packages to obtain information relevant to potential PFAS releases

· Conducted a 1-day site visit on 5 March 2019

· Interviewed current Roseville Armory personnel during the site visit including the CAARNG

Detachment Commander; and, City of Roseville Fire Department personnel

· Completed visual site inspections (VSIs) at known or suspected PFAS release locations and

documented with photographs

· Identified areas of interest (AOI) 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 releases was identified at Roseville Armory during the PA. The

AOI is shown on Figure ES-1 and in Table ES-1 below:

Table ES- 1: AOIs at Roseville Armory

Area of Interest Name Used by Release Dates

AOI 1 Firetruck Parking

and Storage Yard CAARNG Unknown

Based on information obtained during the PA at this AOI, there is potential for exposure to PFAS

contamination in media at or near the facility. The preliminary CSM for Roseville Armory is shown

on Figure ES-2, which presents the potential receptors and media impacted. Based on the U.S.

Environmental Protection Agency (USEPA) Unregulated Contaminant Monitoring Rule 3 data, it

was indicated that PFAS were detected in a public water system above the USEPA Health

Advisory values between 10 to 20 miles of the facility (Appendix A).
Dry Creek

Roseville Fire

Department Station #1

Firetruck Parking

and Storage Yard

Roseville Fire

Department Station #2

AOI 1

Legend

Area of Interest

Potential PFAS Release

Facility Boundary

River/Stream

0 500 1,000 2,000

Feet

Summary of Findings

Figure ES-1

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1:12,000 ­ 12420 Milestone Center Drive

Germantown, MD 20876

Base Map: Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus

DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

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Media

SOURCE PATHWAY RECEPTOR

AOI 1 Potential AFFF 

release

PFAS in 

surface soil

Human 

activities

Precipitation/ 

run-off

Leaching/ 

infiltration

Airborne soil 

particulate

Surface soil 

at AOI

Surface 

water/ 

sediment

Subsurface 

soil

Shallow 

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

Possible complete pathway

Complete pathway

/ / / /

Site 

Worker

Construction 

Worker Resident Trespasser/ Recreational User

Site 

Worker

Construction 

Worker Resident

/ / / /

/ / / /

/ / / /

/ / / /

LEGEND

Figure ES-2

Conceptual Site Model

Roseville Armory, CA

Potential 

Off-Facility 

Source Not 

under 

Control of 

ARNG

Trespasser/ 

Recreational User

Notes:

1. The resident receptor refers to an off-site 

resident.

2. Dermal contact exposure pathway is 

incomplete for PFAS.

3
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1. Introduction

1.1 Authority and Purpose

The United States (US) Army Corps of Engineers (USACE) Baltimore District on behalf of the

Army National Guard (ARNG)-Installations & Environment Division, Cleanup Branch contracted

AECOM Technical Services, Inc. (AECOM) to perform Preliminary Assessments (PAs) and Site

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

Impacted Sites at ARNG Facilities Nationwide 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 their facilities that used per- and poly-fluoroalkyl substances

(PFAS) (a suite of related chemicals), primarily releases of aqueous film forming foam (AFFF)

although other sources of PFAS 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 these PFAS

compounds in the environment will vary. The regulatory framework at both federal and state levels

continues to evolve. The U.S. Environmental Protection Agency (USEPA) issued Drinking Water

Health Advisories for PFOA and PFOS in May 2016, but there are currently no promulgated

national standards regulating PFAS in drinking water. In the absence of federal maximum

contaminant levels, some states have adopted their own drinking water standards for PFAS. On

13 July 2018, under the authority of the Deputy Director of the Division of Drinking Water,

California issued drinking water notification levels of 14 parts per trillion (ppt) for PFOA and 13

ppt for PFOS. Notification levels are non-regulatory health-based advisory levels established for

contaminants in drinking water for which maximum contaminant levels have not been established.

This report presents findings of a PA for PFAS at California Army National Guard (CAARNG)

Roseville Armory in Roseville, California (also referred to as “the facility”), 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 Part 300), and USACE requirements and guidance.

This PA documents the known fire training areas (FTAs) as well as additional locations where

PFAS may have been released to the environment at Roseville Armory. The term PFAS will be

used throughout this report to encompass all PFAS chemicals being evaluated, including PFOS

and PFOA, which are key components AFFF.

1.2 Preliminary Assessment Methods

The performance of this PA included the following tasks:

· Reviewed available administrative record documents and Environmental Data Resources,

Inc. report packages to obtain information relevant to potential PFAS releases

· Conducted a 1-day site visit on 5 March 2019

· Interviewed current Roseville Armory personnel during the site visit including the CAARNG

Detachment Commander; and, City of Roseville Fire Department personnel

· Completed visual site inspections (VSIs) at known or suspected PFAS release locations and

documented with photographs
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· Identified areas 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

1.3 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 at each AOI.

· 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

1.4 Facility Location and Description

The Roseville Amory is located at 850 All America City Boulevard, Roseville, CA 95678. The

Roseville Armory is situated in the Sacramento metropolitan area and Sacramento Valley (Figure

1-1). The facility is about 16 miles northeast of Sacramento and 8 miles west of Folsom Lake. The

latitude, longitude, and surface elevation at the main gate of the facility are 38°45’29.8” N,

121°17’43.2” W, and 153 feet (ft) above mean sea level (amsl), respectively. The ground surface

is flat to gently sloping to the north

The facility contains an armory and has an associated maintenance site. Three buildings are

located within the facility including two readiness centers and one storage building, which is home

to the ARNG 233rd Engineer Detachment (Firefighting). Impervious surfaces primarily concrete

pavements and parking lots make up most of the 5.6-acre facility. The facility is entirely fenced

and accessible by one eastern facility gate. The Roseville Armory has been leased from the Placer

County Fairgrounds since 1961 (White, 2019).
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1.5 Facility Environmental Setting

The Roseville Armory is located is a highly developed suburb northeast of Sacramento, California. 

The facility is bounded by residential development to the south by Placer County Fairgrounds and 

residential development to the west and south, the Roseville Police Department to the north, and 

the All American Speedway to the east. The topography of the area gently slopes to the north.

Soil

As indicated in the 2019 Environmental Data Resources (EDR) report (Appendix A), the primary 

soil component Cometa was found at the Roseville Armory property, as well as smaller amounts 

of Fiddyment and Ramona soils (California Soil Resource Lab, n.d.). The properties of these soil 

components are listed below. 

Soil 

Component 

Name

Soil Surface 

Texture

Hydrologic 

Group

Soil 

Drainage 

Class

Hydric 

Status

Cometa Sandy Loam Class D Well drained Partially 

hydric

Fiddyment Loam Class D Well drained Partially 

hydric

Ramona Loam Class C Well drained Partially 

hydric

Geology

The Roseville Armory is located in a transitional area between the Great Valley and the Sierra 

Nevada physiographic provinces within the U.S. Geological Survey (USGS) Roseville 7.5-minute 

Quadrangle (USGS, 2012). . The Great Valley province is an elongated sedimentary trough 

comprising the Sacramento and San Joaquin River Valleys, filled with a succession of Mesozoicto Cenozoic-aged continental and marine sediments. The Sierra Nevada province is generalized 

as a belt of metamorphic and igneous rock that has been sheared, deformed, and intruded upon 

during tectonic and volcanic activity during the Mesozoic and Cenozoic Eras.

The subsurface consists of Pleistocene-aged alluvial sediments deposited nonconformably over 

fractured volcanic crystalline bedrock characteristic of the Sierra Nevada Mountain Range (City 

of Roseville, 2004). The geologic units underlying the site, in stratigraphically ascending order, 

are the Mehrten Formation, Turlock Lake Formation, undifferentiated Modesto-Riverbank 

formations, Modesto Formation, and undifferentiated Recent alluvium (Figure 1-2).

At the facility, the Mehrten and Turlock Lake formations are observed only in the subsurface. The 

Mehrten Formation is a Tertiary-aged assemblage of silt, sand, gravel, and cobble of volcanic 

origin deposited in fluvial deposits and mudflows, over which lie the Quaternary-aged deposits. 

The Pliocene/Pleistoecene-aged Turlock Lake Formation consists of interbedded silty sands, 

clayey sands, and igneous and metamorphic gravel beds deposited in an alluvial fan environment 

(Arkley, 1962; Shlemon et al., 2000). In Roseville, sands and silts overlying the Turlock Formation 

are recognized as being fluvial deposits of either the Middle Pleistocene-aged Riverbank 

Formation or Late Pleistocene Modesto Formation, but display little to no distinguishing features 

for differentiation. Thinly stratified unconsolidated silt and sand beds overlying the Turlock 

Formation are recognized as the Modesto Formation (Arkley, 1962). Subsequent erosion and 
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fluvial activity has continued through the present day, depositing clay, silt, sand, gravel, and 

cobbles within active ephemeral or perennial river channels.

Hydrogeology

As indicated in the 2019 EDR report (Appendix A), ten wells are located within a one mile radius 

of the Roseville Armory. Four of the ten wells were listed as federal USGS wells, one well was 

listed as an active public water supply well, and the remaining wells are listed from the CA wells 

database. The public water supply well serves a population of 95 people and is located 

approximately 0.6 miles to the southeast of the facility. Another active water supply well was 

indicated to exist at address 402 Atlantic Street, approximately one mile southeast of the facility 

(Black Point Environmental, Inc. [BPE], 2011). The depths of both water supply wells are 

unknown.

Numerous monitoring wells are also located on the Placer County Fairgrounds and Placer County 

Roseville Corporation Yard, bordering the Roseville Armory directly north, where groundwater has 

been monitored in multiple events and various subsurface investigations have taken place. Two 

aquifers, one shallow and one deeper, were identified to exist at approximately 18 and 50 ft below 

ground surface (bgs), respectively. The shallow aquifer is suspected to be perched with depth to 

water measured at approximately 10 ft bgs, although minimal water is said to be present (Sellens 

Consulting LLC [Sellens], 2016; Applied Engineering and Geology, Inc. [AEG], 2009). The deeper 

aquifer appears to be non-continuous due to varying recharge rates with depths to groundwater, 

ranging from 53 to 62 ft bgs. Based on the USEPA Unregulated Contaminant Monitoring Rule 3 

data, it was indicated that PFAS were detected in a public water system above the USEPA Health 

Advisory values between 10 to 20 miles of the facility (Appendix A). The groundwater flow 

direction is not well defined and may vary over short distances but is inferred to flow generally 

north (Sellens, 2016; BPE, 2011). 

Hydrology

The Roseville Armory is located in Pleasant Grove Creek Watershed and all surface water from 

the site eventually drains to the South Branch Pleasant Grove Creek. According to the 2019 EDR 

report (Appendix A), there are no wetland areas or 100-year flood zones identified within the 

Roseville Armory. Storm water is diverted to storm water drains located in and around the facility 

property. The closest surface water body is a retention pond about 1/2 mile northeast of the facility 

at the Sierra View Country Club, and an unnamed tributary of the South Branch Pleasant Grove 

Creek, located approximately 0.3 miles to the north. The Folsom Lake is 8 miles east of the facility 

and is the primary source of potable water for the City of Roseville, including the Roseville Armory 

(BPE, 2011). 

Climate

The Roseville Armory is in a semi-arid, Mediterranean climate zone. The winter “rainy season” 

extends from November to February and the summer season from June to August is 

characterized by warm, dry days and mild nights. The average annual rainfall is approximately 20 

inches. Summer temperatures peak in July with an average high of 94 degrees Fahrenheit (°F) 

and an average low of 61 °F. Winter temperatures are lowest in December with an average high 

of 55 °F and an average low of 40 °F. Prevailing wind speeds are southerly year round due to the 

orientation of the Sacramento Valley and influence of the Sierra Nevada Mountains. Snowfall is 

extremely rare, but frost occasionally occurs (Cline et al., 2010). 

Current and Future Land Use

The Roseville Armory has been home to the 233rd Engineer Detachment (Firefighting) since the 

late 1990s. The mission of the 233rd Engineer Detachment is to “perform fire protection and 
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prevention activities for structure, wildland and aircraft crash rescue incidents, administer

emergency medical care, execute technical rescue operations and mitigate hazardous material

incidents for state and federal missions” (FireDepartment.net, n.d.).

The facility contains an armory and has an associated maintenance site. Three buildings are at

the facility including two readiness centers and one storage building where the firefighting unit is

stationed. The Roseville Armory has been leased from the Placer County Fairgrounds since 1961

(White, 2019). Reasonably anticipated future land use it not expected to change from the current

land use described above.
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Facility Location

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Facility Boundary

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Linda Creek

Kaseberg Creek

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Facility Boundary

Water Body

River/Stream

Inferred Groundwater Flow

Direction

Geology

QPc - Pliocenepleistocene sandstone,

shale, and gravel deposits

Wells

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Groundwater Features

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0 0.25 0.5 1

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Linda Creek-Cirby

Creek Watershed

Gibson Lake-Dry

Creek Watershed

Pleasant

Grove Creek

Watershed

S ou thBr anch P leasant Grove C reek

Cirby Creek

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Facility Boundary

Water Body

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Surface Water Flow

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2. Fire Training Areas

Potential FTAs were investigated during the PA for potential releases of AFFF during training

activities. No FTAs were identified within the Roseville Amory during the PA through interview or

EDR Reports. The CAARNG Detachment Commander had institutional knowledge spanning from

2007 to present day, although timeline gaps exist due to occasional deployment.
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3. Non-Fire Training Areas

One non-FTA where AFFF was stored and/or potentially released was identified during the PA. A

description of the non-FTA is presented below, and the non-FTA is shown on Figure 3-1.

3.1 Firetruck Parking and Storage Yard

The firetruck parking and storage yard is an area consisting of a storage building and paved lot

for vehicle parking. The building was constructed in approximately 2010, and the southern portion

of the building is a storage room for the 233rd Engineer Detachment. The firetruck parking and

storage yard is located at geographic coordinates 38°45’28.7”N, 121°17’50.8”W.

According to an interview with the CAARNG Detachment Commander, the 233rd Engineer

Detachment has a single firetruck, procured in approximately 2008, that is usually parked outside

the storage room in the paved lot. However, the firetruck was stationed at CAARNG Camp

Roberts at the time of the PA site visit.

AFFF was historically stored in the 233rd Engineer Detachment storage room and contained in

the firetruck that is equipped with an AFFF mixing system. However, no AFFF was observed

during the VSI. The type and quantity of the AFFF is unknown. It is also unknown where the AFFF

supplies are currently, but according to the Detachment Commander’s knowledge, AFFF was

never used or disposed of. The firetruck also does not have any known history of leaking AFFF.

Nozzle testing is only conducted with water.
Firetruck Parking and Storage Yard

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Facility Boundary

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Non-Fire Training Area

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0 100 200 400

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4. Emergency Response Areas

No emergency response areas were identified within the current Roseville Armory facility during

the PA through interviews or EDR Reports. The CAARNG Detachment Commander had

institutional knowledge spanning from 2007 to present day, although timeline gaps exist due to

occasional deployment. Emergency services are provided by the City of Roseville Fire

Department. A City of Roseville records search was conducted within a mile radius of the Roseville

Armory, and no records of AFFF response incidents were found.
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5. Adjacent Sources

Two potential off-facility sources of PFAS adjacent to the Roseville Armory, not under the control

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

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

5.1 City of Roseville Fire Department

A PA interview was conducted with two City of Roseville Fire Department Chiefs, who confirmed

the usage and storage of AFFF by the City of Roseville Fire Department. However, specific

training and incident response areas could not be identified, and the Fire Chiefs were unaware of

any fire training agreements with the ARNG. Two City of Roseville Fire Department Stations (#1

and #2) are located within a one mile radius of the Roseville Armory and were identified as

potential adjacent sources. Fire Stations #1 and #2 are located at addresses 401 Oak Street and

1398 Junction Boulevard, respectively.

A YouTube video titled, “Izzy working the Roseville Fire Foam Trailer” was identified during preinvestigation activities as a material of interest due to the depiction of fire training exercises with

foam. The YouTube video was shown to the two Fire Chiefs, who confirmed that the foam

response trailer and personnel shown did not belong to the City of Roseville Fire Department.

5.2 All American Speedway

All American Speedway is located at address 800 All America City Boulevard, bordering the

Roseville Armory to the east. All American Speedway is a 1/3-mile car racing track sanctioned by

National Association for Stock Car Auto Racing (NASCAR). Vehicle crash accidents have

occurred at the racetrack, but it is unknown if incident responses required the use of AFFF.
Kaseberg

Creek

Dry Creek

Roseville Fire

Department Station #1

Roseville Fire

Department Station #2 All American Speedway

Legend

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Facility Boundary

Water Body

River/Stream

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12420 Milestone Center Drive

Germantown, MD 20876

Adjacent Sources

Base Map: Source: Esri, DigitalGlobe, GeoEye,

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

0 700 1,400 2,800

Feet

20
PFAS Preliminary Assessment Report

Roseville Armory, California

21

6. Conceptual Site Model

Based on the PA findings, there was one area where AFFF may have been incidentally spilled to

the ground surface. As such, this AOI may be potential PFAS source area. The AOI and

preliminary CSM for this AOI is 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 – Firetruck Parking and Storage Yard

The following sections describe the CSM components and the specific CSM developed for the

AOI. 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.

In general, the potential PFAS exposure pathways are ingestion and inhalation. Dermal contact

is not considered to be a potential exposure pathway, as studies have shown very limited

absorption of PFAS through the skin (National Ground Water Association, 2018). Receptors for

Roseville Armory include site workers, construction workers residents, recreational users, and

trespassers. The CSMs for each AOI indicate which specific receptors could potentially be

exposed to PFAS.

6.1 AOI 1: Firetruck Parking and Storage Yard

AOI 1 is the area containing parking for a firetruck, a storage building, and a yard. Potential AFFF

releases are possible due to the historical storage of AFFF and parking of an AFFF-containing

firetruck within AOI 1.

The area west of the paved lot within AOI 1 is unpaved soil. Ground-disturbing activities to soil at

AOI 1 could result in site and construction worker exposure to potential PFAS contamination via

inhalation of dust from surface soil or ingestion of surface or subsurface soil. Therefore, the

inhalation and ingestion pathways for these receptors are considered potentially complete.

AOI 1 lies within the Pleasant Grove Creek Watershed, and all surface water drains via storm

water outlets to the South Branch Pleasant Grove Creek. PFAS are water soluble and can migrate

readily from soil to groundwater or surface water via leaching and run-off. If PFAS releases to

surface and subsurface soil occurred, it is possible that PFAS migrated from surface soil at AOI 1

to groundwater and waters in the South Branch Pleasant Grove Creek. All receptors may be

exposed to PFAS via ingestion of surface water and sediment in the South Branch Pleasant Grove

Creek.

Potable water for Roseville Armory is supplied by the City of Roseville Utilities Department, which

derives its primary source from the Folsom Lake, located approximately 8 miles east of the

Roseville Armory. A secondary source of water includes five city-maintained groundwater wells

and water from surrounding water agencies for use during water shortages (BPE, 2011). Two

active public water supply wells were indicated to exist southeast and within a one mile radius of

the facility. The inferred groundwater direction is generally north but is variable locally (Sellens,

2016; BPE, 2011). Groundwater may also be perched in the shallow aquifer at depth of

approximately 10 ft bgs (Sellens, 2016). Therefore, potential groundwater impacts to the public

water supply wells are possible, and the exposure pathway for groundwater to all receptors is

potentially complete.
!C(

!C(

!C(

!C(

!C(

!C(

!C(

Gibson Lake-Dry

Creek Watershed

Pleasant

Grove Creek

Watershed

Kaseberg Creek

Dry Creek

Roseville Fire

Department Station #1

Firetruck Parking

and Storage Yard

Roseville Fire

Department Station #2

AOI 1 All American Speedway

Legend

Potential PFAS Release

Facility Boundary

Water Body

River/Stream

Surface Water Flow

Direction

Inferred Groundwater

Flow Direction

!C( Municipal Well

0 750 1,500 3,000

Feet

Area of Interest

Figure 6-1

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1:18,000 ­ 12420 Milestone Center Drive

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Base Map: Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus

DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

22
Media

SOURCE PATHWAY RECEPTOR

AOI 1 Potential AFFF 

release

PFAS in 

surface soil

Human 

activities

Precipitation/ 

run-off

Leaching/ 

infiltration

Airborne soil 

particulate

Surface soil 

at AOI

Surface 

water/ 

sediment

Subsurface 

soil

Shallow 

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

Possible complete pathway

Complete pathway

/ / / /

Site 

Worker

Construction 

Worker Resident Trespasser/ Recreational User

Site 

Worker

Construction 

Worker Resident

/ / / /

/ / / /

/ / / /

/ / / /

LEGEND

Figure 6-2

Conceptual Site Model

Roseville Armory, CA

Potential 

Off-Facility 

Source Not 

under 

Control of 

ARNG

Trespasser/ 

Recreational User

Notes:

1. The resident receptor refers to an off-site 

resident.

2. Dermal contact exposure pathway is 

incomplete for PFAS.

23
PFAS Preliminary Assessment Report

Roseville Armory, California

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PFAS Preliminary Assessment Report

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25

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 Roseville Armory. The PA findings are based

on the information presented in Appendix A and Appendix B.

7.1 Findings

One AOI related to potential PFAS release was identified (Table 7-1) at Roseville Armory during

the PA (Figure 7-1).

Table 7-1: AOIs at Roseville Armory

Area of Interest Name Used by Release Dates

AOI 1 Firetruck Parking

and Storage Yard CAARNG Unknown

Two potential off-facility sources of PFAS were also considered in the local area surrounding

Roseville Armory. These include:

· City of Roseville Fire Department – stores AFFF at two adjacent fire stations and uses AFFF

for incident responses

· All American Speedway – may have incident responses to vehicle crashes requiring the

usage of AFFF

Based on information obtained during the PA at AOI 1, there is potential for exposure to PFAS

contamination in media at or near the facility. The preliminary CSM for Roseville Armory is shown

on Figure 6-2, which presents the potential receptors and media impacted.

7.2 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 predominantly based on the information provided during interviews

with personnel who had direct knowledge of PFAS use at the facility. 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 due to staffing

changes, 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, and potential source areas were

visually inspected.

The following Table 7-2 summarizes the uncertainties associated with the PA.
PFAS Preliminary Assessment Report

Roseville Armory, California

26

Table 7-2: Uncertainties

Area of Interest Source of Uncertainty

AOI 1: Firetruck Parking

and Storage Yard

The area was confirmed to contain AFFF storage of an

unknown type and quantity and parking for a firetruck; 

however, no firetruck and AFFF storage was observed

during the VSI. It is unknown where the AFFF supplies

are currently, but according to the CAARNG

Detachment Commander’s knowledge, AFFF was never

used or disposed of. The firetruck was stationed at

CAARNG Camp Roberts at the time of the PA site visit

and could not be visually inspected.

Some facility operations are not well defined given the

limitation of interviewee knowledge. The CAARNG

Detachment Commander had institutional knowledge

spanning from 2007 to present day, although timeline

gaps exist due to occasional deployment. Facility

operations from the 1990s (when engineer detachment

operations began at Roseville Armory) to 2007 are

unknown.

7.3 Potential Future Actions

Based on the PA findings and a lack of robust institutional knowledge regarding historical activities

concerning AFFF use and storage at the facility, there is a potential for 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 a Site Inspection (SI).

Table 7-3: PA Findings Summary

Area of Interest AOI Location Rationale Potential

Future Action

AOI 1: Firetruck

Parking and

Storage Yard

38°45’28.7”N; 

121°17’50.8”W

Potential historic use of AFFF

within the storage yard where

AFFF was stored and an AFFFcontaining firetruck was parked

Proceed to an

SI, focus on soil,

groundwater,

surface water,

sediment

ARNG will evaluate the need for an SI at Roseville Armory based on the potential receptors, the

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

Roseville Fire

Department Station #1

Firetruck Parking

and Storage Yard

Roseville Fire

Department Station #2

AOI 1

Legend

Area of Interest

Potential PFAS Release

Facility Boundary

River/Stream

0 500 1,000 2,000

Feet

Summary of Findings

Figure 7-1

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1:12,000 ­ 12420 Milestone Center Drive

Germantown, MD 20876

Base Map: Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus

DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

27
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8. References

Applied Engineering and Geology, Inc. (AEG). 2009. Quarterly Monitoring Report, Fourth Quarter

2008, Placer County, Roseville Corporation Yard, 200 Corporation Yard Road, Roseville,

Placer County, California 95678. January 23, 2009.

Arkley, R. J., 1962, The geology, geomorphology, and soils of the San Joaquin Valley in the

Vicinity of the Merced River, California, California Division of Mines and Geology Bulletin, no.

182.

Black Point Environmental, Inc (BPE). 2011. No Further Action Request, 510 Washington

Boulevard, Roseville, California. September 16, 2011.

California Soil Resource Lab, n.d. Soil Web, UC Davis and University of California Agriculture and

Natural Resources / USDA Natural Resources Conservation Service.

https://casoilresource.lawr.ucdavis.edu/gmap/. (Accessed April 2019).

City of Roseville, 2004, City of Roseville 2020 General Plan, adopted February 4, 2004,

https://www.roseville.ca.us/government/departments/development_services/planning/specific

_plans_planning_areas/downtown_specific_plan. (Accessed April 2019).

Cline, G., Neigher, A., and Bellinder, A., 2010. Climate of Sacramento, California. National

Weather Service Office, Sacramento, California. August.

FireDepartment.net. n.d. 233rd Engineer Det Army Firefighting Team.

https://www.firedepartment.net/directory/california/placer-county/roseville/233rd-engineerdet-army-firefighting-team. (Accessed May 2019).

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

Practice. January 2018.

Sellens Consulting LLC (Sellens). 2016. No Further Action Report (Low Threat Underground

Storage Tank Case Closure Policy), Placer County Fairgrounds, 800 All American City

Boulevard, Roseville, California 95678, Case #310258. January 29, 2016.

Shlemon, R. J., Horner, T., Florsheim, J., 2000, Quaternary Geology of the Sacramento Area,

Association of Engineering Geologist, Sacramento Section, Guidebook for Field Trip 25 March

2000.

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

Preliminary Assessments under CERCLA. EPA/540/G-91/013. September 1991.

United States Geological Survey (USGS). 2012. USGS US Topo 7.5-minute map for Roseville,

CA. USGS – National Geospatial Technical Operations Center.

White, Thomas (CAARNG Real Estate Manager). “Re: CAARNG Leasing Documents” Message

to Stephanie Tjan (AECOM). 2019. E-mail.
PFAS Preliminary Assessment Report

Roseville Armory, California

30
PFAS Preliminary Assessment Report

Roseville Armory, California

Appendix A

Data Resources
PFAS Preliminary Assessment Report

Roseville Armory, CA

Data resources will be provided separately on CD. Data resources for Roseville Armory include:

Environmental Data Resources, Inc. Geocheck Report

· 2019 Environmental Data Resources, Inc. Geocheck Report for Roseville Armory, CA

CAARNG Leasing Information

· 2019 CA ARNG Leasing Documents E-mail from Tom White (CAARNG Real Estate

Manager) to Stephanie Tjan (AECOM)

Miscellaneous Resources

· 2009 Quarterly Monitoring Report, Fourth Quarter 2008, Placer County, Roseville

Corporation Yard, 200 Corporation Yard Road, Roseville, Placer County, California 95678.

· 2011 No Further Action Request, 510 Washington Boulevard, Roseville, California.

· 2016 No Further Action Report (Low Threat Underground Storage Tank Case Closure

Policy), Placer County Fairgrounds, 800 All American City Boulevard, Roseville, California

95678, Case #310258.

Roseville Armory UCMR3 Data Set

· Tabulated UCMR3 Data Set
PFAS Preliminary Assessment Report

Roseville Armory, California

Appendix B

Preliminary Assessment Documentation
PFAS Preliminary Assessment Report

Roseville Armory, California

Appendix B.1

Interview Records
PA Interview Questionnaire – Fire Station Facility:_Roseville Armory___

Interviewer:__ST_________

Date/Time:__3/5/19________

Interviewee:___Dimas Velasquez__________

Title:__Detachment Commander_________

Phone Number:__530-844-0444________

Email:_______________________________

Can your name/role be used in the PA Report? Y or N

Can you recommend anyone we can interview?

Y or N __________________________

1. Roles or activities with the Facility/years working at the Facility.

Detachment commander for approximately 1 year; Been at facility since 2007 but deployed occasionally.

233rd firefighting unit didn’t start until late 90s. The back portion of the facility with the fire department

was not built until ~2010.

2. What can you tell us about the history of AFFF at the Facility? Was it used for any of the following

activities, circle all that apply and indicate years of active use, if known? Identify these locations on a

facility map.

Maintenance (e.g., ramp washing)

Fire Training Areas

Firefighting (Active Fire)

Crash

Fire Suppression Systems (Hangers/Dining Facilities)

Fire Protection at Fueling Stations

Non-Technical/Recreational/ Pest Management

Cannot recall ever using AFFF for training or in emergency response incident, AFFF was stored

here and also in the fire engine parked at facility

3. Are any current buildings constructed with AFFF dispensing systems or fire suppression systems?

What are the AFFF/suppression system test requirements? What is the frequency of testing at the

AFFF/suppression systems?

No

4. Are fire suppression systems currently charged with AFFF or have they been retrofitted for use of

high expansion foam?

No

5. How is AFFF procured? Do you have an inventory/procurement system that tracks use?
PA Interview Questionnaire – Fire Station Facility:_Roseville Armory___

Interviewer:__ST_________

Date/Time:__3/5/19________

They get AFFF from the guard supplies

6. What type of AFFF has been/is being used (3%, 6%, Mil Spec Mil-F-24385, High Expansion)?

Manufacturer (3M, Dupont, Ansul, National Foam, Angus, Chemguard, Buckeye, Fire Service Plus)?

Not known

7. Is AFFF formulated on base? If so, where is the solution mixed, contained, transferred, etc.?

Not known

8. Where is the AFFF stored? How is it stored (tanks, 55-gallon drums, 5-gallon buckets)? What

size are the storage tanks? Is the AFFF stored as a mixed solution (3% or 6%) or concentrated

material?

Not known

9. How is the AFFF transferred to emergency response vehicles, suppression systems, flightline

extinguishers? Is/was there a specified area on the facility where vehicles are filled with AFFF and

does this area have secondary containment in case of spills? How and where are vehicles storing

AFFF cleaned/decontaminated?

There is an external mixing system that is part of the fire engine.

10. Provide a list of vehicles that carried AFFF, now and in the past, and where are/were they located?

Only one fire truck that was procured in 2008/2009; right now it is stationed at Camp Roberts

11. Any vehicles have a history of leaking AFFF? Do you/did you test the vehicles spray patterns to

make sure equipment is working properly? How often are/were these spray tests performed and can

you provide the locations of these tests, now and in the past?
PA Interview Questionnaire – Fire Station Facility:_Roseville Armory___

Interviewer:__ST_________

Date/Time:__3/5/19________

No; only do nozzle testing with water

12. How many FTAs are/were on this facility and where are they? Locate on a map. How many FTAs

are active and inactive? For inactive FTAs, when was the last time that fire training using AFFF

was conducted at them?

None

13. What types of fuels/flammables were used at the FTAs?

None

14. What was the frequency of AFFF use at each location? When a release of AFFF occurs during a fire

training exercise, now and in the past, how is/was the AFFF cleaned and disposed of? Were

retention ponds built to store discharged AFFF? Was the AFFF trickled to the sanitary sewer or

left in the pond to infiltrate?

None

15. Are there mutual aid/use agreements between county, city, local fire department? Please list, even if

informal. If formalized, may we have a copy of the agreement? Can you recall specific times when city,

county, state personnel came on-post for training? If so, please state which state/county agency,

military entity? Do you have any records, including photographs to share with us?

None

16. Did individual units come on-post with their own safety personnel, did they also bring their own AFFF?

Was training with AFFF part of these exercises? How were emergencies handled under these

circumstances?
PA Interview Questionnaire – Fire Station Facility:_Roseville Armory___

Interviewer:__ST_________

Date/Time:__3/5/19________

N/A

17. Did military routinely or occasionally fire train off-post? List units that you can recall used/trained at

various areas.

No

18. Are there specific emergency response incident reports (i.e., aircraft or vehicle crash sites and fires)? If

so, may we please copy these reports? Who (entity) was the responder?

None known of. ARNG does not respond to emergencies. They must be called to duty by the state

governor.

19. Do you have records of fuel spill logs? Was it common practice to wash away fuel spills with

AFFF? Is/was AFFF used as a precaution in response to fuel releases or emergency runway

landings to prevent fires?

N/A

20. Was AFFF used for forest fires or fire management on-post/off-post? If so, please describe what

happened and who was involved?

No

21. Can you provide any other locations where AFFF has been stored, released, or used (i.e. hangars,

buildings, fire stations, firefighting equipment testing and maintenance areas, emergency response

sites, storm water/surface water, waste water treatment plants, and AFFF ponds)?

No
PA Interview Questionnaire – Fire Station Facility:_Roseville Armory___

Interviewer:__ST_________

Date/Time:__3/5/19________

22. Are you aware of any other creative uses of AFFF? If so, how was AFFF used? What entities were

involved?

No

23. How is off-spec AFFF disposed (used for training, turned in, or given to a local Fire Station)? If

applicable, do you know the name of the vendor that removes off-spec AFFF? Do you have copies of

the manifest or B/L?

Never disposed of

24. Do you recommend anyone else we can interview? If so, do you have contact information for them?

No
PA Interview Questionnaire - Other Facility:__Roseville Fire Department

Interviewer:__ST__________

Date/Time:__3/5/19___________

Interviewee:__Jason Rizzi/Brian Demer__

Title:___Division Chief-Fire Marshal/Assistant

Fire Chief

Phone Number:_916-774-5802_________

Email:__jrizzi@roseville.ca.us__________

Can your name/role be used in the PA Report? Y or N

Can you recommend anyone we can interview?

Y or N __________________________

Roles or activities with the Facility/Years working at the Facility:

Jason Rizzi – 8 yrs

Brian Demer – 25 years since July 15, 1994

PFAS Use: Identify accidental/intentional release locations, time frame of release, frequency of releases,

storage container size (maintenance, fire training, firefighting, buildings with suppression systems (as

builts), fueling stations, crash sites, pest management, recreational, dining facilities, metals plating, or

waterproofing). How are materials ordered/purchased/disposed/shared with others?

Fire Department still uses Class B foam

J. Rizzi stated that he could conduct a records search for incidents but we need to send a formal records

request to him. Should start with request for fire incident reports at property that were responded to by

foam.

J. Rizzi said to follow up with question about training with guard.

J. Rizzi confirmed that the Youtube video of Roseville foaming was not their Fire Department unit. He said

it might be in Roseville, MD or at the refinery in the Bay area.
PFAS Preliminary Assessment Report

Roseville Armory, California

Appendix B.2

Visual Site Inspection Checklists
Visual Site Inspection Checklist

Names(s) of people performing VSI: S. Tjan, B. Packer, D. Velasquez

Recorded by: S. Tjan

ARNG Contact:

Date and Time: 3/5/2019

Method of visit (walking, driving, adjacent): walking

Source/Release Information

Site Name / Area Name / Unique ID: Roseville Armory - Storage 

Historic Site Use (Brief Description):

Current Site Use (Brief Description):

Physical barriers or access restrictions: Fenced

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

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

2. Has usage been documented? 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

Fairground Placer County, All American Speedway, Direworld Scare Park

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

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

Site / Area Acreage:

Same as described above but no AFFF currently found in storage room.

They park their one fire truck on the south end of the storage building. The fire 

department keeps their supplies in the storage room. Fire truck is rarely there. AFFF 

was stored in storage room.

Page 1 of 4
Visual Survey Inspection Log

1. Does the facility have a fire suppression system? 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

1a. If so, note observation and location:

Everything drains via storm drains to South Branch Pleasant Grove Creek

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

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

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

3a. If so, please note the location: 

Two potable wells located >1 mile southeast

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

4a. If so, please note the location: 

5. Can wind dispersion information be obtained? N

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

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

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

Roseville Fire Department Stations, All American Speedway

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

Other Significant Site Features: 

Migration Potential:

Page 2 of 4
Visual Survey Inspection Log

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

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

Storage building was built in 2010

2. Is the site/area vegetated? Y

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

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

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

Receptor Information

1. Is access to the site restricted? Y

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

fenced 

2. Who can access the site? 

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

ARNG staff

3. Are residential areas located near the site? Y

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

Townhouse to west

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

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

Roseville Community Preschool

5. Are any wetlands located near the site? Y

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

Unnamed tributary of South Branch Pleasant Grove Creek, approximately 0.3 miles to the north

Significant Topographical Features: 

Site Workers / Construction Workers / Trespassers / Residential / Recreational 

Users / Ecological

only western grassy lot

Page 3 of 4
Visual Survey Inspection Log

Additional Notes

Photographic Log

Photo ID/Name Date & Location Photograph Description

Page 4 of 4
PFAS Preliminary Assessment Report

Roseville Armory, California

Appendix B.3

Conceptual Site Model Information
Preliminary Assessment – Conceptual Site Model Information

Site Name: Roseville Armory

Why has this location been identified as a site?

Location of the 233rd Engineer Detachment (Firefighting) and contains AFFF storage

Are there any other activities nearby that could also impact this location?

Municipal fire stations and All American Speedway

Training Events

Have any training events with AFFF occurred at this site? Not known

If so, how often?

How much material was used? Is it documented?

Identify Potential Pathways: Do we have enough information to fully understand over land surface 

water flow, groundwater flow, and geological formations on and around the facility? Any direct 

pathways to larger water bodies?

Surface Water:

Surface water flow direction? North towards South Branch Pleasant Grove Creek

Average rainfall? 19.9 inches

Any flooding during rainy season? No

Direct or indirect pathway to ditches? Indirect to ditches via storm drains

Direct or indirect pathway to larger bodies of water? Indirect to South Branch Pleasant Grove Creek

Does surface water pond any place on site? No

Any impoundment areas or retention ponds? No

Any NPDES location points near the site? No

How does surface water drain on and around the flight line? No flight line
Preliminary Assessment – Conceptual Site Model Information

Groundwater:

Groundwater flow direction? Generally north

Depth to groundwater? 10 ft bgs for shallow aquifer and 53-62 ft bgs for deeper aquifer

Uses (agricultural, drinking water, irrigation)? Drinking water as secondary source

Any groundwater treatment systems? No

Any groundwater monitoring well locations near the site? Yes, near Placer Fairgrounds

Is groundwater used for drinking water? Yes, as secondary source

Are there drinking water supply wells on installation? No

Do they serve off-post populations? No

Are there off-post drinking water wells downgradient? Two potable wells <1 miles southeast

Waste Water Treatment Plant:

Has the installation ever had a WWTP, past or present? No

If so, do we understand the process and which water is/was treated at the plant? 

Do we understand the fate of sludge waste?

Is surface water from potential contaminated sites treated?

Equipment Rinse Water

1. Is firefighting equipment washed? Where does the rinse water go?

No

2. Are nozzles tested? How often are nozzles tested? Where are nozzles tested? Are nozzles cleaned after 

use? Where does the rinse water flow after cleaning nozzles?

Tested only with water

3. Other?
Preliminary Assessment – Conceptual Site Model Information

Identify Potential Receptors:

Site Worker – Yes

Construction Worker - Yes

Recreational User – Yes (potentially off-facility user of South Branch Pleasant Grove Creek)

Residential - Yes (potentially off-facility user of South Branch Pleasant Grove Creek for recreation)

Child - Yes (potentially off-facility user of South Branch Pleasant Grove Creek for recreation)

Ecological – Yes (eco receptors of South Branch Pleasant Grove Creek)

Note what is located near by the site (e.g. daycare, schools, hospitals, churches, agricultural, livestock)?

Daycare, residential areas, Placer County Fairgrounds, All American Speedway

Documentation

Ask for Engineering drawings (if applicable).

Has there been a reconstruction or changes to the drainage system? When did that occur?

None known
PFAS Preliminary Assessment Report

Roseville Armory, California

Appendix C

Photographic Log
Appendix C - Photographic Log

Army National Guard, Preliminary

Assessment for PFAS

Roseville Armory Roseville, California

Preliminary Assessment Report

Roseville Armory

Perfluorooctane-Sulfonic Acid (PFOS) and

Perfluorooctanoic Acid (PFOA) Impacted Sites

ARNG Installations, Nationwide

Photograph No. 1

Description:

Area shown where Roseville

Armory fire truck is typically

parked; the door to the fire

unit storage shed is shown

beyond the vehicle

Orientation:

Northeast

Date 3/5/2019

Time 9:59

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