U.S. Department of the Interior

U.S. Geological Survey

Open-File Report 2012–1082

Prepared in cooperation with the U.S. Department of the Army Environmental and Natural 

Resources Management Office of the U.S. Army Signal Center and Fort Gordon

Assessment of Soil-Gas Contamination at Three Former 

Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011
Cover photograph. Former fuel-dispensing site at 8th Street, Fort Gordon, Georgia
Assessment of Soil-Gas Contamination 

at Three Former Fuel-Dispensing Sites, 

Fort Gordon, Georgia, 2010–2011

By Andral W. Caldwell, W. Fred Falls, Wladmir B. Guimaraes, W. Hagan Ratliff, 

John B. Wellborn, and James E. Landmeyer

Prepared in cooperation with the U.S. Department of the Army Environmental 

and Natural Resources Management Office of the U.S. Army Signal Center and 

Fort Gordon

Open-File Report 2012–1082

U.S. Department of the Interior

U.S. Geological Survey
U.S. Department of the Interior

KEN SALAZAR, Secretary

U.S. Geological Survey

Marcia K. McNutt, Director

U.S. Geological Survey, Reston, Virginia: 2012

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Suggested citation:

Caldwell, A.W., Falls, W.F., Guimaraes, W.B., Ratliff, W.H., Wellborn, J.B., and Landmeyer, J.E., 2012, Assessment of 

soil-gas contamination at three former fuel-dispensing sites, Fort Gordon, Georgia, 2010–2011: 

U.S. Geological Survey Open-File Report 2012–1082, 37 p.
iii

Contents

Abstract...........................................................................................................................................................1

Introduction.....................................................................................................................................................2

Purpose and Scope ..............................................................................................................................2

Description of the Study Area ............................................................................................................2

Methods...........................................................................................................................................................2

Passive Soil-Gas Survey......................................................................................................................2

8th Street Site...............................................................................................................................3

Chamberlain Avenue Site...........................................................................................................3

12th Street Site.............................................................................................................................3

Results .............................................................................................................................................................4

Passive Soil-Gas Survey......................................................................................................................4

8th Street Site...............................................................................................................................4

Chamberlain Avenue Site...........................................................................................................4

12th Street Site.............................................................................................................................5

Summary..........................................................................................................................................................6

Selected References.....................................................................................................................................7

Figures

1. Locations of the 8th Street, Chamberlain Avenue, and 12th Street 

former fuel-dispensing sites, Fort Gordon, Georgia................................................................8

2. Photographs of soil-gas sampler prior to being installed in a shallow borehole 

and following retrieval from a borehole and prior to shipping to laboratory 

for analysis.....................................................................................................................................9

3. Photograph of rotary hammer drill with stainless-steel drill bit used to drill 

boreholes for installation of the passive soil-gas samplers at the 8th Street, 

Chamberlain Avenue, and 12th Street sites .............................................................................9

4–19. Maps showing—

4. Locations of soil-gas samplers, 8th Street site, Fort Gordon, Georgia, 

June 29–August 12, 2011 ...........................................................................................................10

5. Locations of soil-gas samplers, Chamberlain Avenue site, Fort Gordon, Georgia, 

July 7–12, 2011.............................................................................................................................11

6. Locations of soil-gas samplers, 12th Street site, Fort Gordon, Georgia, 

July 18–22, 2011...........................................................................................................................12

7. Detections of total petroleum hydrocarbons mass in soil-gas samplers, 

8th Street site, Fort Gordon, Georgia, June 29–August 12, 2011.........................................13

 8. Detections of benzene mass in soil-gas samplers, 8th Street site, Fort Gordon, 

Georgia, June 29–August 12, 2011 ...........................................................................................14

9. Detections of toluene mass in soil-gas samplers, 8th Street site, Fort Gordon, 

Georgia, June 29–August 12, 2011 ...........................................................................................15

10. Detections of pentadecane mass in soil-gas samplers, 8th Street site, Fort Gordon, 

Georgia, June 29–August 12, 2011 ...........................................................................................16
iv

11. Detections of chloroform mass in soil-gas samplers, 8th Street site, Fort Gordon, 

Georgia, June 29–August 12, 2011 ...........................................................................................17

12. Detections of total petroleum hydrocarbons mass in soil-gas samplers, 

Chamberlain Avenue site, Fort Gordon, Georgia, July 7–12, 2011 ......................................18

13. Detections of combined mass of benzene, toluene, ethylbenzene, and xylenes 

in soil-gas samplers, Chamberlain Avenue site, Fort Gordon, Georgia, 

July 7–12, 2011.............................................................................................................................19

14. Detections of combined mass of undecane, tridecane, and pentadecane 

(C11, C13, and C15 diesel compounds) in soil-gas samplers, Chamberlain 

Avenue site, Fort Gordon, Georgia, July 7–12, 2011..............................................................20

15. Detections of trimethylbenzenes mass in soil-gas samplers, Chamberlain 

Avenue site, Fort Gordon, Georgia, July 7–12, 2011..............................................................21

16. Detections of tetrachloroethylene mass in soil-gas samplers, Chamberlain 

Avenue site, Fort Gordon, Georgia, July 7–12, 2011..............................................................22

17. Detections of total petroleum hydrocarbons mass in soil-gas samplers, 

12th Street site, Fort Gordon, Georgia, July 18–22, 2011 ......................................................23

18. Detections of toluene mass in soil-gas samplers, 12th Street site, Fort Gordon, 

Georgia, July 18–22, 2011 ..........................................................................................................24

19. Detections of combined mass of undecane, tridecane, and pentadecane 

(C11, C13, and C15 diesel compounds) in soil-gas samplers, 12th Street site, 

Fort Gordon, Georgia, July 18–22, 2011 ...................................................................................25

Tables

1. Mass of volatile organic compounds detected in soil-gas samplers, deployed on 

June 29, 2011, collected from the 8th Street site, Fort Gordon, 

Georgia .........................................................................................................................................26

2. Mass of volatile organic compounds detected in soil-gas samplers, deployed on 

August 8, 2011, collected from the 8th Street site, Fort Gordon, 

Georgia .........................................................................................................................................29

3. Mass of volatile organic compounds detected in soil-gas samplers, deployed on 

July 7, 2011, collected from the Chamberlain Avenue site, Fort Gordon, 

Georgia .........................................................................................................................................32

4. Mass of volatile organic compounds detected in soil-gas samplers, deployed on 

July 18, 2011, collected from the 12th Street site, Fort Gordon, 

Georgia .........................................................................................................................................35
v

Inch/Pound to SI

Multiply By To obtain

Length

inch (in.) 2.54 centimeter (cm)

inch (in.) 25.4 millimeter (mm)

foot (ft) 0.3048 meter (m)

mile (mi) 1.609 kilometer (km)

Area

acre 4,047 square meter (m2)

acre 0.4047 hectare (ha)

acre 0.4047 square hectometer (hm2) 

acre 0.004047 square kilometer (km2)

Conversion Factors

Acronyms

BTEX Benzene, toluene, ethylbenzene, and xylene (total)

C11,C13,C15 Undecane, tridecane, and pentadecane (total)

μg microgram

MDL Method detection level

MTBE Methyl tert-butyl ether

mL milliliter

PAH Polycyclic aromatic hydrocarbon

PCE Perchloroethylene (also known as tetrachloroethylene)

RCRA Resource Conservation and Recovery Act

RSL Regional screening level

SVOC Semivolatile organic compound

TMBs combined masses of 1,3,5-trimethylbenzene and 1,2,4-trimethylbenzene

TCE Trichloroethylene

TPH Total petroleum hydrocarbon

USEPA U.S. Environmental Protection Agency

USGS U.S. Geological Survey

VOC Volatile organic compound

1,4-DCB 1,4-dichlorobenzene
Abstract 

Soil gas was assessed for contaminants at three 

former fuel-dispensing sites at Fort Gordon, Georgia, from 

October 2010 to September 2011. The assessment included 

delineation of organic contaminants using soil-gas samplers 

collected from the former fuel-dispensing sites at 8th Street, 

Chamberlain Avenue, and 12th Street. This assessment was 

conducted to provide environmental contamination data 

to Fort Gordon personnel pursuant to requirements for the 

Resource Conservation and Recovery Act Part B Hazardous 

Waste Permit process.

Soil-gas samplers installed and retrieved during June and 

August 2011 at the 8th Street site had detections above the 

method detection level (MDL) for the mass of total petroleum 

hydrocarbons (TPH), benzene, toluene, ortho-xylene, 

undecane, tridecane, pentadecane, and chloroform. Total 

petroleum hydrocarbons soil-gas mass exceeded the MDL of 

0.02 microgram in 54 of the 55 soil-gas samplers. The highest 

detection of TPH soil-gas mass was 146.10 micrograms, 

located in the central part of the site. Benzene mass exceeded 

the MDL of 0.01 microgram in 23 soil-gas samplers, 

whereas toluene was detected in only 10 soil-gas samplers. 

Ortho-xylene was detected above the MDL in only one soilgas sampler. The highest soil-gas mass detected for undecane, 

tridecane, and pentadecane was located in the northeastern 

corner of the 8th Street site. Chloroform mass greater than the 

MDL of 0.01 microgram was detected in less than one-third of 

the soil-gas samplers. 

Soil-gas masses above the MDL were identified for 

TPH, gasoline-related compounds, diesel-range alkanes, 

trimethylbenzenes, naphthalene, 2-methyl-napthalene, 

octane, and tetrachloroethylene for the July 2011 soil-gas 

survey at the Chamberlain Avenue site. All 30 of the soil-gas 

samplers contained TPH mass above the MDL. The highest 

detection of TPH mass, 426.36 micrograms, was for a 

soil-gas sampler located near the northern boundary of the 

site. Gasoline-related compounds and diesel-range alkanes 

were detected in multiple soil-gas samplers, and the highest 

detections of these compounds were located near the central 

part of the site near existing, nonoperational, fuel-dispensing 

pumps. Trimethylbenzenes were detected in less than half 

of the soil-gas samplers. Naphthalene soil-gas mass was 

detected above the MDL in 10 soil-gas samplers, whereas 

2-methyl-napthalene was detected above the MDL in half of 

the soil-gas samplers. Octane mass was detected above the 

MDL in one soil-gas sampler located near the central part of 

the site. Tetrachloroethylene soil-gas mass was detected above 

the MDL in more than half of the soil-gas samplers, and the 

highest tetrachloroethylene soil-gas mass of 0.90 microgram 

was located in the northeastern part of the site. 

Soil-gas samplers collected at the 12th Street site during 

July 2011 contained soil-gas mass above the MDL for TPH, 

toluene, undecane, tridecane, and pentadecane (diesel-range 

alkanes), trichloroethylene, 1,4-dichlorobenzene, chloroform, 

and 1,2,4-trimethylbenzene. The highest detected TPH mass 

was 24.37 micrograms in a soil-gas sampler located in the 

northern part of the site. The highest detection of toluene 

soil-gas mass was from a soil-gas sampler located near the 

southern boundary of the site. The diesel-range alkanes 

were detected above the MDL in five soil-gas samplers; the 

highest detection of soil-gas diesel mass, 0.65 microgram, 

was located in the southern part of the site. Trichloroethylene 

and 1,4-dichlorobenzene were detected above the MDL in 

the northern part of the site in one soil-gas sampler that also 

had one of the highest detections of TPH. Chloroform was 

detected above the MDL in three soil-gas samplers, whereas 

1,2,4-trimethylbenzene soil-gas mass was detected above the 

MDL in two soil-gas samplers. 

Assessment of Soil-Gas Contamination at Three Former 

Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

By Andral W. Caldwell,1 W. Fred Falls,1 Wladmir B. Guimaraes,1 W. Hagan Ratliff,2 John B. Wellborn,3 and 

James E. Landmeyer1

1

U.S. Geological Survey.

2

Environmental Branch, Fort Gordon, Georgia.

3

Environmental and Natural Resources, Fort Gordon, Georgia.
2 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Introduction

Fort Gordon is a U.S. Department of the Army 

(U.S. Army) facility located approximately 10 miles southwest 

of Augusta in east-central Georgia (fig. 1). A cantonment 

(military housing) area is located at the northeastern boundary 

of Fort Gordon. The former fuel-dispensing sites for this 

investigation are at 8th Street, Chamberlain Avenue, and 

12th Street (fig 1). The former fuel-dispensing sites are all 

located on a relatively flat and open area in the northeastern 

part of Fort Gordon and southwest of the cantonment area. 

Historically, little information is available about the past 

installation, operation, and decommissioning of these former 

fuel-dispensing sites other than the 8th Street and 12th Street 

sites were active from the 1940s to the 1970s and the 

Chamberlain Avenue site was opened in the 1960s (Hagan 

Ratliff, Environmental Branch, Fort Gordon, Georgia, oral 

commun., 2010).

Because of the lack of historical information regarding 

past operations at these sites, the effects of past activities 

on environmental resources at the 8th Street, Chamberlain 

Avenue, and 12th Street sites currently are unknown. The 

current assessment was conducted to provide environmental 

contamination data to Fort Gordon personnel to comply with 

the requirements of the Resource Conservation and Recovery 

Act (RCRA) Part B Hazardous Waste Permit process. An 

initial investigation to assess potential environmental effects is 

warranted because these areas are located in the outcrop area 

of the Dublin and Midville aquifer systems, which are used 

for drinking water by the towns of Augusta and Hephzibah 

(Williams, 2007). Moreover, groundwater flowing from these 

areas may discharge to streams in the area and potentially 

enable contaminants to be transported off of the Fort Gordon 

property.

Purpose and Scope

From October 2010 to September 2011, the 

U.S. Geological Survey (USGS), in cooperation with the 

U.S. Army Environmental and Natural Resources Management Office of the U.S. Army Signal Center and Fort Gordon, 

Georgia, assessed subsurface contamination at three former 

fuel-dispensing sites. This assessment was conducted to 

provide environmental contamination data to the U.S. Army 

at Fort Gordon. The assessment included the delineation of 

organic contaminants by using soil-gas samplers installed at 

the 8th Street, Chamberlain Avenue, and 12th Street sites. This 

report presents the analytical results of the soil-gas samplers 

and delineates those areas where contaminant mass exceeded 

the MDL for the organic compound of concern.

Description of the Study Area

Fort Gordon is a U.S. Army facility located approximately 10 miles southwest of Augusta in east-central Georgia 

(fig. 1). Fort Gordon is located in the northern part of the 

Coastal Plain Physiographic Province and south of the Fall 

Line. Fort Gordon is underlain by Cretaceous and Tertiary 

strata and is characterized by surficial soils and sediments of 

unconsolidated sands, indurated sands, and semiconsolidated 

sandstones, and layers of clay that include kaolinite (Gregory 

and others, 2001; Williams, 2007).

The study sites are former fuel-dispensing stations 

located at 8th Street, Chamberlain Avenue, and 12th Street 

(fig. 1). The 8th Street site is located in a flat, sparsely wooded 

area at the corner of 3rd Avenue and 12th Street, and across 

the street from former building 51101. The 8th Street site 

contains a concrete pad and raised concrete islands where the 

fuel pumps were once located. The Chamberlain Avenue site 

is located in a flat, open area with a concrete pad and raised 

concrete islands where the nonoperational pumps are still 

located, covering the entire site. The site is located on property 

currently (2012) leased by the Georgia National Guard 

between 8th Avenue and Chamberlain Avenue. The 12th Street 

site is located in a flat, open area with a concrete pad and 

raised concrete islands where the pumps were once located. 

The 12th Street site is located across the street from the 67th 

Expeditionary Signal Battalion Motor Pool.

Methods

The methods used in the assessment of soil gas were 

selected to provide data to determine the presence or absence 

of contaminants at the former fuel-dispensing sites at 

8th Street, Chamberlain Avenue, and 12th Street. The soil-gas 

method that was used provides results that are qualitative and 

has been used effectively at other sites on the Fort Gordon 

property to identify areas of contamination (Caldwell and 

others, 2011; Falls and others, 2011).

Passive Soil-Gas Survey

The assessment of soil-gas contamination was conducted 

using a passive soil-gas survey based on the GORE® Module, 

a commercially available passive diffusion sampler based on 

GORE-TEX® membrane technology (U.S. Environmental 

Protection Agency, 1998; W.L. Gore & Associates, Inc., 

2004; American Society for Testing and Materials, 2006). 

The module is an adsorbent material placed inside a 

shoestring-shaped GORE-TEX® tube (fig. 2A), which is 

contained in a 20-milliliter (mL) gas-tight vial (fig. 2B) sent 

by the commercial laboratory (W.L. Gore & Associates, 

Inc.). The material can adsorb a wide variety of volatile 

organic compounds (VOCs), including solvents such as 

perchloroethylene (PCE; also known as tetrachloroethylene); 

trichloroethylene (TCE); benzene, toluene, ethylbenzene, 

and xylene (gasoline-range compounds; collectively referred 

to as BTEX); methyl tert-butyl ether (MTBE); semivolatile 

organic compounds (SVOCs); total petroleum hydrocarbons 
Methods 3

(TPH); and polycyclic aromatic hydrocarbons (PAHs) such 

as naphthalene. The modules were tied to a string, attached 

to a cork plug to prevent the entrance of surface water and 

ambient surface sources of contamination, and inserted 

into a shallow borehole. The borehole was 1.0-inch (in.) 

in diameter and approximately 18- to 24-in. deep, and was 

created by a stainless-steel ship-auger bit, with a carbide tip, 

attached to an electric rotary hammer drill (fig. 3). The depth 

of each borehole was drilled within the range specified by the 

U.S. Environmental Protection Agency (USEPA) for soil-gas 

investigations (U.S. Environmental Protection Agency, 

1998). The hammer drill was needed in order to drill through 

a 6- to 10-in.-thick concrete pad at the sites. The auger was 

cleaned with a paper towel between each borehole drilling. 

After 4 to 6 days, the modules were removed from the field, 

placed in their original 20-mL gas-tight vials (fig. 2B), and 

sent to the commercial laboratory (W.L. Gore & Associates, 

Inc.) for analysis by gas chromatography/mass spectrometry 

using a modification of USEPA method 8260/8270 to include 

thermal desorption of the adsorbed soil gas from the sampler. 

The laboratory is in compliance with Good Laboratory 

Practices and ISO Guide 25 (International Organization for 

Standardization, 1990). The soil-gas contaminant results 

are expressed as mass of contaminant (units of micrograms) 

and provide qualitative screening-level data. A value of 

0.00 (reporting format of W.L. Gore & Associates, Inc.) is 

reported for combined mass or concentration if the individual 

compounds included in the combined value were not 

detected above the MDLs and at least one of the individual 

compounds was reported as below detection level.

Results of passive soil-gas surveys can indicate the 

presence of particular contaminants. The results, however, 

do not indicate whether the detection was derived from free 

product, from residual-phase adsorbed material or vapors in 

the unsaturated zone, or from the dissolved-phase material 

in shallow and deep groundwater (unless the module is 

deployed so that it comes in direct contact with water). In 

general, higher soil-gas mass in a sample tends to be related 

to the presence of residual contamination or free product 

that is close to the land surface where the soil-gas sampler is 

located. If such source material is located at greater depths, 

however, the soil-gas contaminant mass generally will be 

lower. A lower value near known sources of contamination 

may be due to various attenuation processes that affect the 

soil-gas mass prior to detection. In both cases, however, the 

soil-gas samplers help to rapidly indicate the presence or 

absence of contaminants. The passive soil-gas approach was 

approved for use at Fort Gordon by the Hazardous Waste 

Management Branch, Georgia Environmental Protection 

Department (William Powell, P.E., Environmental Engineer, 

Department of Defense Remediation Unit, oral commun., 

2008).

8th Street Site

A passive soil-gas survey was conducted at 

the 8th Street site during June and August 2011. On 

June 29, 2011, 35 soil-gas samplers were deployed, and 20 

soil-gas samplers were deployed on August 8, 2011, for a 

total of 55 soil-gas samplers (fig. 4). The soil-gas samplers 

were placed in a grid pattern to cover the generalized extent 

of the 8th Street site. Six additional soil-gas samplers were 

used as trip-blank samplers for the June and August 2011 

sampling and were not deployed. Each sampler was installed 

and retrieved as previously described. A 6- to 10-in.-thick 

concrete pad covered part of the 8th Street site. Eighteen of 

the 55 soil-gas samplers deployed in June and August 2011 

were placed in boreholes below the concrete pad. The 35 

soil-gas samplers that were deployed on June 29, 2011, 

were removed on July 5, 2011, and the 20 soil-gas 

samplers deployed on August 8, 2011, were removed on 

August 12, 2011.

Chamberlain Avenue Site

A passive soil-gas survey was conducted at the 

Chamberlain Avenue site during July 2011 when 30 soil-gas 

samplers were deployed (fig. 5). The soil-gas samplers were 

placed in a grid pattern to cover the generalized extent of the 

Chamberlain Avenue site. Four additional soil-gas samplers 

were used as trip-blank samplers for the July 7, 2011, 

sampling and were not deployed. Each sampler was installed 

and retrieved as previously described. A 6- to 10-in.-thick 

concrete pad covered the Chamberlain Avenue site with the 

exception of a small sandy area in the northeast portion of 

the site where two soil-gas samplers were installed. Twentyeight of the soil-gas samplers deployed were placed in 

boreholes below the concrete pad. The 30 soil-gas samplers 

were deployed on July 7, 2011, and were removed on 

July 12, 2011.

12th Street Site

A passive soil-gas survey was conducted at the 

12th Street site during July 2011 when 39 soil-gas samplers 

were deployed (fig. 6). The soil-gas samplers were placed 

in a grid pattern to cover the generalized extent of the 

12th Street site. Three additional soil-gas samplers were used 

as trip-blank samplers for the July 18, 2011, sampling and 

were not deployed. Each sampler was installed and retrieved 

as previously described. A 6- to 10-in.-thick concrete pad 

covered part of the 12th Street site. Eighteen of the 39 

soil-gas samplers deployed were placed in boreholes below 

the concrete pad. The 39 soil-gas samplers were deployed on 

July 18, 2011, and were removed on July 22, 2011.
4 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Results

The results of the passive soil-gas survey are presented 

in this section and used to further delineate the area of 

contamination related to the former fuel-dispensing sites at 

8th Street, Chamberlain Avenue, and 12th Street. The results 

of these sampling activities indicate that past activities at these 

sites have resulted in an environmental effect.

Passive Soil-Gas Survey

The passive soil-gas surveys for the former fueldispensing sites at 8th Street, Chamberlain Avenue, and 

12th Street were conducted from June to August 2011. All 

soil-gas samplers were installed to approximately the same 

depth. A high soil-gas mass for a particular contaminant 

generally indicates close proximity to a contaminant source. 

The passive soil-gas survey results are discussed for the 

8th Street, Chamberlain Avenue, and 12th Street sites.

8th Street Site

Fifty-four of the 55 soil-gas samplers installed during 

June and August 2011 had detections of TPH mass greater 

than the MDL of 0.02 microgram (μg; fig. 7; tables 1 and 2). 

Total petroleum hydrocarbons were detected at a soil-gas mass 

of 1.0 μg or greater in 25 of the 55 soil-gas samplers. Eleven 

soil-gas samplers had detections of TPH soil-gas mass that 

exceeded 10 μg. At the 8th Street site, the samplers with the 

three highest detections of TPH soil-gas mass greater than 

50 μg were 53.94, 80.47, and 146.10 μg (samplers 662040, 

662044, and 662045, respectively). These samplers were 

located in the central part of the soil-gas site, which is partially 

wooded and located south and west of the concrete pad. 

Because all but one soil-gas sampler contained TPH mass at 

levels greater than the MDL, it is possible that the boundary 

of the 8th Street soil-gas site has not been fully assessed with 

respect to TPH. The TPH detections in 52 of the 55 soil-gas 

samplers were higher than the highest reported TPH detection 

of 0.10 μg in the six trip blanks (tables 1 and 2).

Detections of BTEX were reported as a combined mass 

for benzene, toluene, and ortho-xylene with MDLs of 0.01 μg 

and ethylbenzene and meta- and para-xylene with MDLs of 

0.01 μg, but ethylbenzene and meta- and para-xylene were 

not detected in any of the soil-gas samplers above the MDL 

(tables 1 and 2). Twenty-three of the 55 soil-gas samplers 

installed at the 8th Street site had benzene mass greater than 

or equal to the MDL of 0.01 μg (fig. 8). The highest benzene 

mass of 0.04 μg (sampler 662053) was detected in the central 

part of the 8th Street site adjacent to the concrete pad. Only 10 

of the 55 soil-gas samplers detected toluene mass greater than 

or equal to the MDL of 0.01 μg (fig. 9). The soil-gas samplers 

with the two highest detections of toluene mass of 0.11 and 

0.25 μg (samplers 662336 and 662045, respectively) were 

located in the southern part of the soil-gas site. These samplers 

are located just south of the concrete pad, and the highest 

toluene mass coincides with the location of the highest TPH 

mass of 146.10 μg (fig. 7). Ortho-xylene mass was detected 

above the MDL in only one soil-gas sampler. There were no 

reported detections of BTEX mass in any of the six trip blanks 

(tables 1 and 2).

Pentadecane was detected at a soil-gas mass of 0.01 μg 

or higher in 5 of the 55 soil-gas samplers at the 8th Street site 

(fig. 10; tables 1 and 2). Two soil-gas samplers were reported 

below the detection level of 0.01 μg with the remaining 48 

samplers reported as nondetections. The highest pentadecane 

soil-gas mass was 0.42 μg (sampler 662347) at the 8th 

Street site and was located in the northeastern corner of the 

8th Street site where former building 51101 existed. The next 

highest detection of pentadecane soil-gas mass of 0.33 μg 

(sampler 662044) was located near the central part of the site 

and west of the concrete pad. Undecane and tridecane mass 

were detected at or above the MDL of 0.01 μg in six and 

three soil-gas samplers, respectively. The highest undecane 

and tridecane soil-gas mass of 5.98 and 0.19 μg (sampler 

662347; table 2), respectively, also coincides with the location 

of the sampler having the highest pentadecane soil-gas mass 

of 0.42 μg (sampler 662347; fig. 10; table 2). There were no 

reported detections of pentadecane, undecane, or tridecane 

mass in any of the six trip blanks (tables 1 and 2).

Fewer than one-third of the soil-gas samplers installed at 

the 8th Street site had chloroform mass greater than or equal 

to the MDL of 0.01 μg (fig. 11; tables 1 and 2). The highest 

soil-gas chloroform mass of 0.28 μg (sampler 662340) was 

detected in the southern part of the site. Chloroform mass 

ranging from 0.01 to 0.23 μg was detected in 12 soil-gas 

samplers located throughout the site. There were no reported 

detections of chloroform mass in any of the six trip blanks 

(tables 1 and 2).

Chamberlain Avenue Site

All of the 30 soil-gas samplers installed for this study 

at the Chamberlain Avenue site had detections of TPH mass 

greater than the MDL of 0.02 μg (fig. 12; table 3). Total 

petroleum hydrocarbons were detected at a soil-gas mass of 

0.87 to 10.0 μg in 14 of the 30 soil-gas samplers. Sixteen 

soil-gas samplers had detections of TPH soil-gas mass greater 

than 10.0 μg. The samplers with the four highest detections 

of TPH soil-gas mass of 340.33, 356.36, 421.69, and 

426.36 μg (samplers 662305, 662309, 662308, and 662300, 

respectively) were located in the central and northern part of 

the site. Samplers 662305, 662308, and 662300 coincide with 

raised islands on the concrete pad where the fuel-dispensing 

pumps still exist but are nonoperational. Because all soil-gas 

samplers contained TPH mass at levels greater than the MDL, 

it is possible that the boundary of the Chamberlain Avenue 

site has not been fully assessed with respect to TPH. The 

TPH detections in all the soil-gas samplers were higher than 

the reported TPH detections in any of the four trip blanks 

(0.02 μg; table 3).
Results 5

Detections of BTEX were reported as a combined mass 

for benzene, toluene, and ortho-xylene with MDLs of 0.01 μg 

and ethylbenzene and meta- and para-xylene with MDLs of 

0.02 μg (table 3). There were no detections of BTEX soil-gas 

mass in nine of the soil-gas samplers at the Chamberlain 

Avenue site (fig. 13). Eighteen soil-gas samplers had BTEX 

soil-gas mass detections of 0.02 to 0.22 μg located throughout 

the site. Three soil-gas samplers had detections of BTEX 

soil-gas mass greater than 0.22 μg. Samplers 662318 and 

662317 had BTEX soil-gas mass of 0.43 and 0.62 μg, respectively, and were located in the southeastern part of the site. 

The highest BTEX soil-gas mass of 0.73 μg (sampler 662308) 

was detected in the central part of the Chamberlain Avenue 

site and coincides with the second highest detection of TPH 

mass of 421.69 μg (fig. 12). Toluene was the most frequently 

detected of the BTEX compounds with 16 detections above 

the MDL. Benzene and ethylbenzene mass were detected 

above the MDL of 0.01 μg in 10 and 3 soil-gas samplers, 

respectively. Meta-, para-, and ortho-xylene were detected 

above the MDLs in one-third of the soil-gas samplers and 

commonly coincided with the presence of toluene. There were 

no reported detections of BTEX mass in any of the four trip 

blanks (table 3).

The diesel-range alkanes (C11, C13, and C15) were reported 

by the laboratory as a combined mass for undecane, tridecane, 

and pentadecane with MDLs of 0.01 μg (table 3). Each of the 

three diesel compounds were detected in multiple soil-gas 

samplers with five of the samplers having no detections for 

the combined diesel mass at the Chamberlain Avenue site 

(fig. 14). Twenty of the soil-gas samplers had detections of 

diesel mass that ranged from 0.01 μg to less than 10 μg. Five 

soil-gas samplers had detections of diesel mass that exceeded 

10 μg and coincide with TPH detections of soil-gas mass 

greater than 200 μg (table 3; fig. 12). The samplers with the 

three highest detections of combined diesel mass of 28.65, 

29.80, and 30.97 μg (samplers 662308, 662305, and 662300, 

respectively) at the Chamberlain Avenue site were located near 

the concrete islands at the three most northern former fueldispensing pumps. Undecane was the most frequently detected 

diesel compound above the MDL (table 3). There were no 

reported detections of diesel compounds in any of the four trip 

blanks (table 3).

Trimethylbenzenes (TMBs) were reported by the 

laboratory as combined masses of 1,2,4-trimethylbenzene 

and 1,3,5-trimethylbenzene with MDLs of 0.01 and 0.02 μg, 

respectively (table 3). Eighteen of the soil-gas samplers at 

the Chamberlain Avenue site had no detections of TMBs 

mass (fig. 15). Eight of the soil-gas samplers had TMBs mass 

ranging from 0 to 0.1 μg, whereas four soil-gas samplers had 

detections greater than 0.1 μg. The highest detection of TMBs 

soil-gas mass was 1.11 μg (sampler 662308) and was located 

in the central part of the Chamberlain Avenue site near the 

third most southern former fuel-dispensing pump. There were 

no reported detections of TMBs in any of the four trip blanks 

(table 3).

Fewer than half of the 30 soil-gas samplers installed at 

the Chamberlain Avenue site had PCE mass greater than the 

MDL of 0.02 μg (fig. 16; table 3). Nineteen of the soil-gas 

samplers had detections of PCE mass greater than or equal to 

0.03 μg. The highest soil-gas PCE mass of 0.90 μg (sampler 

662294) was detected in the northeastern part of the site in 

a grassy area near the concrete pad. There were no reported 

detections of PCE in any of the four trip blanks (table 3).

Naphthalene and 2-methyl-naphthalene were the only 

other compounds specifically reported as exceeding the 

MDL of 0.02 μg at the Chamberlain Avenue site (table 3). 

The highest soil-gas naphthalene mass of 0.25 μg (sampler 

662308) was detected in the central part of the Chamberlain 

Avenue site near the third most southern former fueldispensing pump and coincides with the highest detection of 

BTEX mass of 0.73 μg (table 3; fig. 13). The highest detection 

of 2-methyl-naphthalene soil-gas mass of 1.82 μg (sampler 

662309) was located in the central part of the Chamberlain 

Avenue site. There were no reported detections of naphthalene 

and 2-methyl-naphthalene above the MDL in any of the four 

trip blanks (table 3). 

Octane is a component of gasoline and was detected in 

four soil-gas samplers above the MDL of 0.02 μg. The highest 

octane soil-gas mass was 0.11 μg, which was located at one of 

the former fuel-dispensing pumps at the Chamberlain Avenue 

site, and coincides with the highest BTEX soil-gas mass of 

0.73 μg and the second highest detection of TPH mass of 

421.69 μg (sampler 662308; table 3; figs. 12, 13).

12th Street Site

All 39 soil-gas samplers installed at the 12th Street 

site had detections of TPH mass greater than the MDL of 

0.02 μg (fig. 17; table 4). Total petroleum hydrocarbon was 

detected at a soil-gas mass of 0.15 to 2.0 μg in 24 of the 39 

soil-gas samplers. Eleven soil-gas samplers had detections 

of TPH mass greater than 2.0 μg but less than 10.0 μg. 

The soil-gas samplers with the two highest detections of 

TPH mass of 19.57 and 24.37 μg (samplers 662232 and 

662200, respectively) were located in the northern part of the 

12th Street site. Sampler 662200 coincided with a raised island 

on the concrete pad where the northernmost fuel-dispensing 

pump once existed, and sampler 662232 was located in an 

open area west of the concrete pad in the northwest corner of 

the site. Because all soil-gas samplers contained TPH mass at 

levels greater than the MDL, it is possible that the boundary 

of the 12th Street site has not been fully assessed with respect 

to TPH. The TPH detections in all the soil-gas samplers were 

higher than the reported TPH detections in any of the three trip 

blanks (table 4).

Detections of BTEX were reported as a combined 

mass for benzene, toluene, and ortho-xylene with MDLs of 

0.01 μg, and ethylbenzene and meta- and para-xylene with 

MDLs of 0.02 μg; however, there were no reported detections 

for benzene, ethylbenzene, or xylene above the respective 

MDLs (table 4). Only four of the 39 soil-gas samplers had 
6 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

detections of toluene mass greater than the MDL of 0.01 μg 

(fig. 18; table 4). Three of the soil-gas samplers with toluene 

mass greater than the MDL were located in the northern part 

of the 12th Street site. The highest detection of toluene soilgas mass of 0.72 μg (sampler 662222) was located along the 

southwest corner of the concrete pad. There were no reported 

detections of toluene in any of the three trip blanks (table 4).

The diesel-range alkanes (C11, C13, and C15) were reported 

by the laboratory as a combined mass for undecane, tridecane, 

and pentadecane with MDLs of 0.01 μg (fig. 19; table 4). At 

least one of the three diesel compounds was detected in five 

of the samplers at the 12th Street site. Four of the soil-gas 

samplers had detections of diesel compounds that ranged from 

0 to 0.02 μg. The highest soil-gas combined diesel mass of 

0.65 μg (sampler 662223) was detected in the southernmost 

part of the 12th Street site. There were no reported detections 

of diesel compounds in any of the four trip blanks (table 4).

Only one soil-gas sampler had detections of TCE 

and 1,4-dichlorobenzene (1,4-DCB) mass greater than 

the MDLs of 0.02 μg and 0.01 μg, respectively (table 4). 

Trichloroethylene and 1,4-DCB each with a mass of 0.05 μg 

were detected in soil-gas sampler 662232 in the northern 

part of the 12th Street site and coincide with high detections 

of TPH, toluene, and the diesel-range alkane pentadecane 

(figs. 17, 18, and 19, respectively). Therefore, it is possible 

that the boundary of the 12th Street site has not been fully 

assessed. There were no reported detections of TCE or 

1,4-DCB in any of the three trip blanks (table 4).

Chloroform and 1,2,4-trimethylbenzene were the 

only other compounds reported as exceeding the MDLs 

(table 4). Chloroform soil-gas mass was greater than the 

MDL of 0.01 μg in three soil-gas samplers. The highest 

chloroform soil-gas mass of 0.10 μg was detected in soil-gas 

samplers 662198 and 662204 (table 4). Soil-gas mass as 

1,2,4-trimethylbenzene exceeded the MDL of 0.01 μg in 

two soil-gas samplers. There were no reported detections of 

chloroform or 1,2,4-trimethylbenzene above the MDLs in any 

of the three trip blanks (table 4).

Summary

The U.S. Geological Survey, in cooperation with the 

U.S. Department of the Army Environmental and Natural 

Resources Management Office of the U.S. Army Signal Center 

and Fort Gordon, Georgia, assessed soil gas for contaminants 

at three former fuel-dispensing sites at 8th Street, Chamberlain 

Avenue, and 12th Street at Fort Gordon, Georgia, from 

October 2010 to September 2011. The assessment of these 

former fuel-dispensing sites was conducted to provide 

environmental contamination data to Fort Gordon personnel 

pursuant to requirements of the Resource Conversation and 

Recovery Act Part B Hazardous Waste Permit process.

Soil-gas samplers collected at the 8th Street site during 

the June and August 2011 soil-gas surveys had elevated 

masses above the method detection level (MDL) for total 

petroleum hydrocarbons (TPH), gasoline-related compounds 

benzene, toluene, and ortho-xylene, diesel-range alkanes 

undecane, tridecane, and pentadecane, and chloroform. Total 

petroleum hydrocarbons were detected in 54 of the 55 soil-gas 

samplers. Three of the samplers had detections of TPH mass 

greater than 50 micrograms (μg), and the highest detection of 

TPH mass was 146.10 μg. Benzene mass exceeded the MDL 

of 0.01 μg in 23 soil-gas samplers, and toluene was detected 

in only 10 soil-gas samplers greater than or equal to the MDL 

of 0.01μg. Ortho-xylene mass was detected above the MDL 

in one soil-gas sampler. The highest undecane, tridecane, and 

pentadecane soil-gas mass at the 8th Street site was located in 

the northeastern corner of the site where building 51101 once 

existed. Chloroform was detected in less than one-third of the 

soil-gas samplers installed at the 8th Street site. 

Thirty soil-gas samplers were installed at the 

Chamberlain Avenue site during the July 2011 soil-gas 

survey. Elevated masses above the MDL were identified for 

TPH, gasoline-related compounds (BTEX), diesel-range 

alkanes (C11, C13, and C15), trimethylbenzenes, naphthalene, 

2-methyl-napthalene, octane, and tetrachloroethylene (PCE). 

Total petroleum hydrocarbons mass was detected in all 30 

of the soil-gas samplers, and the highest detection of TPH 

soil-gas mass was 426.36 μg. The gasoline-related compounds 

and diesel-range alkanes were detected in multiple samplers, 

and the highest detections were located in the central part 

of the site near the existing former fuel-dispensing pumps. 

The highest BTEX soil-gas mass of 0.73 μg was detected in 

sampler 662308 and is located near the third most southern 

former fuel-dispensing pump. Toluene was the most frequently 

detected BTEX compound at the Chamberlain Avenue site. 

Trimethylbenzenes (TMBs) mass was detected in 12 of the 

soil-gas samplers for this soil-gas survey. At the Chamberlain 

Avenue site, the highest detection of TMBs mass were located 

near the raised concrete island at the third most southern 

former fuel-dispensing pump, the same location with the 

highest BTEX mass (sampler 662308). Fewer than half of the 

soil-gas samplers installed at the Chamberlain Avenue site 

had PCE mass greater than the MDL of 0.02 μg. The highest 

soil-gas PCE mass of 0.90 μg was detected in a grassy area 

near the northeast end of the concrete pad. Naphthalene and 

2-methyl-napthalene were the only other compounds reported 

as exceeding the MDL. Octane was detected in four soil-gas 

samplers greater than the MDL of 0.02 μg. The highest octane 

soil-gas mass of 0.11 μg was detected at the same location 

near the former fuel-dispensing pump with the highest BTEX 

and TMBs soil-gas masses (sampler 662308).

Soil-gas samplers collected at the 12th Street site 

during the July 2011 soil-gas survey had elevated masses 

above the MDL for TPH, toluene, undecane, tridecane, 

and pentadecane (diesel-range alkanes), trichloroethylene 

(TCE), 1,4-dichlorobenzene (1,4-DCB) , chloroform, and 

1,2,4-trimethylbenzene. Total petroleum hydrocarbons were 

detected above the MDL in all 39 soil-gas samplers. Sampler 

662200, with a TPH mass of 24.37 μg, coincided with a 
Selected References 7

raised island on the concrete pad where the northernmost 

fuel-dispensing pump once existed, and sampler 662232, with 

a TPH mass of 19.57 μg, was located in an open area in the 

northwest corner of the site. The highest detections of TPH 

soil-gas mass were located in the northern part of the site. 

Toluene soil-gas mass greater than the MDL of 0.01 μg was 

detected in four of the samplers. The highest diesel soil-gas 

mass of 0.65 μg was detected in a sampler located in the 

southern part of the 12th Street site. One sampler in the 

northern part of the 12th Street site (sampler 662232) had 

detections of TCE and 1,4-DCB soil-gas mass greater than 

the MDL of 0.02 and 0.01μg, respectively, and coincides with 

high detections of TPH, toluene, and the diesel-range alkane 

pentadecane. Chloroform and 1,2,4-trimethylbenzene were 

the only other compounds reported as exceeding the MDLs. 

Chloroform mass was detected above the MDL in three 

soil-gas samplers, whereas 1,2,4-trimethylbenzene mass was 

detected above the MDL in two soil-gas samplers.

Selected References

American Society for Testing and Materials, 2006, Standard 

guide for soil gas monitoring in the vadose zone: ASTM 

D5314–92, 36 p.

Briggs, P.H., and Meier, A.L., 2002, The determination of 

forty-two elements in geological materials by inductively 

coupled plasma–mass spectrometry, in Taggart, J.E., Jr., 

ed., 2002, Analytical methods for chemical analysis of 

geologic and other materials, U.S. Geological Survey: 

U.S. Geological Survey Open-File Report 02–223–I, 14 p.

Caldwell, A.W., Falls, W.F., Guimaraes, W.B, Ratliff, W.H., 

Wellborn, J.B., and Landmeyer, J.E., 2011, Assessment of 

soil-gas and soil contamination at the South Prong Creek 

Disposal Area, Fort Gordon, Georgia, 2009–2010: U.S. 

Geological Survey Open-File Report 2011–1079, 34 p.

Falls, W.F., Caldwell, A.W., Guimaraes, W.B, Ratliff, W.H., 

Wellborn, J.B., and Landmeyer, J.E., 2011, Assessment of 

soil-gas and soil contamination at the former Military Police 

Range, Fort Gordon, Georgia, 2009–2010: U.S. Geological 

Survey Open-File Report 2011–1095, 24 p.

Gregory, M.B., Stamey, T.C., and Wellborn, J.B., 2001, Ecological characterization of streams, and fish-tissue analysis 

for mercury and lead at selected locations, Fort Gordon, 

Georgia, June 1999 to May 2000: U.S. Geological Survey 

Open-File Report 01–203, 24 p.

International Organization for Standardization, 1990, ISO 

Guide 25—General requirements for the competence of 

calibration and testing laboratories (3d ed.): New York, 

American National Standards Institute.

South Carolina Department of Health and Environmental 

Control, 2002, Environmental Surveillance and Oversight 

Program data report, 2002, accessed February 11, 2010, at 

http://www.scdhec.gov/environment/envserv/docs/esop_

datarpt_02.pdf.

U.S. Environmental Protection Agency, 1998, Environmental 

technology verification report, soil gas sampling 

technology: EPA/600/R–98/095, 44 p. + app.

U.S. Environmental Protection Agency, 2009, Regional 

screening level tables, accessed January 12, 2010, at 

http://www.epa.gov/reg3hwmd/risk/human/

rb-concentration_table/Generic_Tables/index.htm.

Williams, L.J., 2007, Hydrogeology and potentiometric 

surface of the Dublin and Midville aquifer systems in 

Richmond County, Georgia, January 2007: U.S. Geological 

Survey Scientific Investigations Map 2982, 1 sheet.

W.L. Gore & Associates, Inc., 2004, GORETM surveys for 

site assessment & monitoring, accessed February 28, 2011, 

at http://www.gore.com/MungoBlobs/239/659/surveys_

environmental_brochure.pdf.
8 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

8th Street Site

12th Street Site

Chamberlain Ave Site

Study

area

Augusta

Coastal Plain

GEORGIA

Piedmont

Blue Ridge

Cumberland

Plateau and

Valley and Ridge

Fall Line

Spirit Creek

82 ̊11' 82 ̊10'40" 82 ̊10'20" 82 ̊10" 82 ̊9'40" 82 ̊9'20"

33 ̊25'40"

33 ̊25'20"

33 ̊24'40"

33 ̊25'

0 500 1,000 2,000 FEET

0 125 250 500 METERS

Figure 1. Locations of the 8th Street, Chamberlain Avenue, and 12th Street former fuel-dispensing sites,

Fort Gordon, Georgia.
Figures 9

Figure 2. (A) Soil-gas sampler prior to being installed in a shallow 

borehole and (B) following retrieval from a borehole and prior to shipping to 

laboratory for analysis.

Figure 3. Rotary hammer drill with stainless-steel drill bit used to drill boreholes for 

installation of the passive soil-gas samplers at the 8th Street, Chamberlain Avenue, and 

12th Street sites.
10 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

EXPLANATION

Soil-gas sampler location and number

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

8th Street

0 25 50 100 FEET

0 5 10 20 METERS

662343

662344

662032

662333

662338

662342

662335

662341

662349

662343

662049

662348

662345

662337

662334

662033

662066

662055

662052

662068

662059

662064

662047

662070

662069

662062

662063

662054

662061

662065

662050 662042

662058

662056

662051

662057

662071

662060

662346

662336

662347

662044

662350

662045

662340

662040

662041

662031

662331

662339

662046

662043

662332

662048

662053

662067

662343

Former

building 51101

N

Figure 4. Locations of soil-gas samplers, 8th Street site, Fort Gordon, Georgia, June 29–August 12, 2011.
Figures 11

662304

662301

662296

662294

662293

662298

662302

662306

662303

662297

662299

662295

662305

662300

662319

662314

662315

662321

662316

662311

662308

662317

662313 662312

662307 662309

662320

662318

662322

662310

662322

EXPLANATION

Soil-gas sampler location and number

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

Chamberlain Avenue

0 20 40 80 FEET

0 5 10 20 METERS

N

Figure 5. Locations of soil-gas samplers, Chamberlain Avenue site, Fort Gordon, Georgia, July 7–12, 2011.
12 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

662199

662206

662234

662210

662197

662214

662198

662207

662233

662219

662208

662220

662204

662227

662224 662221

662230

662228

662225

662216

662211

662231

662229

662226

662213

662205

662212

662209

662217

662202

662196

662222

662232

662201

662223

662200

662215

662218

662203

EXPLANATION

Soil-gas sampler location and number

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

67th Expeditionary Signal

 Battalion Motor Pool

0 25 50 100 FEET

0 5 10 20 METERS

662225

N

12th Street

Figure 6. Locations of soil-gas samplers, 12th Street site, Fort Gordon, Georgia, July 18–22, 2011.
Figures 13

Figure 7. Detections of total petroleum hydrocarbons mass in soil-gas samplers, 8th Street site, Fort Gordon, 

Georgia, June 29–August 12, 2011.

EXPLANATION

Below detection level

0.04 to 1.0

>1.0 to 10

>10 to 50

> 50

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

0 25 50 100 FEET

0 5 10 20 METERS

Former

building 51101

N

8th Street

662350

662032

662333

662033

662059

662065

662051

662347

662350

662340

662031

662331

662046

662043

662067

Total petroleum hydrocarbons mass,

 in micrograms and sampler number

662071

662344

662338

662342

662335

662341

662349

662343

662049

662348

662345

662337

662334

662066

662055

662052

662068

662064

662047

662069

662062

662063

662054

662061

662050 662042

662058

662056

662071

662060

662346

662344

662044

662070

662057

662336

662041

662339

662332

662048

662053

662044

662045

662040

662041
14 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

0 25 50 100 FEET

0 5 10 20 METERS

Former

building 51101

N

662031

662052

662068

662059

662064

662047

662070

662069

662062

662063

662054

662061 662065

662050

662051

662057

662041

662031

662046

662048

662067

662033

662066

662058

662056

662071

662043

662033

662044

662055

662044

662053

EXPLANATION

Benzene mass, in micrograms

 and sampler number

No detection

Below detection level

0.01 to 0.02

> 0.02

662331

662344

662032

662333

662338

662342

662335

662341

662349

662343

662049

662348

662345

662337

662334

662042

662060

662346

662336

662347

662350

662045

662340

662040

662331

662339

662332

8th Street

Figure 8. Detections of benzene mass in soil-gas samplers, 8th Street site, Fort Gordon, Georgia, 

June 29–August 12, 2011.
Figures 15

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

0 25 50 100 FEET

0 5 10 20 METERS

N

Former

building 51101

EXPLANATION

Toluene mass, in micrograms

 and sampler number

No detection

Below detection level

0.01 to 0.1

> 0.1

662331

662344

662032

662333

662338

662342

662335

662341

662349

662343

662049

662348

662345

662337

662334

662033

662066

662055

662052

662068

662059

662064

662047

662070

662069

662062

662063

662054

662061

662065

662050

662346

662347

662350

662340

662031

662331

662339

662043

662332

662067

662042

662042

662058

662056

662051

662046

662040

662057

662071

662060

662044

662040

662041

662048

662053

662336

662336

662045

8th Street

Figure 9. Detections of toluene mass in soil-gas samplers, 8th Street site, Fort Gordon, Georgia, 

June 29–August 12, 2011.
16 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

0 25 50 100 FEET

0 5 10 20 METERS

N

Former

building 51101

EXPLANATION

Pentadecane mass, in micrograms

 and sampler number

No detection

Below detection level

0.01 to 0.1

> 0.1

662331

662344

662032

662333

662338

662342

662335

662341

662349

662343

662049

662348

662345

662337

662334

662033

662066

662055

662052

662068

662059

662064

662047

662070

662069

662062

662063

662054

662061

662065

662050

662346

662347

662350

662340

662031

662331

662339

662043

662332

662067

662042

662042

662058

662056

662051

662046

662040

662057

662071

662060

662044

662040

662041

662048

662053

662336

662336

662045

8th Street

Figure 10. Detections of pentadecane mass in soil-gas samplers, 8th Street site, Fort Gordon, Georgia, 

June 29–August 12, 2011.
Figures 17

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

0 25 50 100 FEET

0 5 10 20 METERS

N

Former

building 51101

662347

662350

662340

662031

662331

662339

662043

662332

662067

662046

662044

662040

662048

662053

662336

662045

662346

EXPLANATION

Chloroform mass, in micrograms

 and sampler number

No detection

0.01 to 0.2

> 0.2

662331

662344

662032

662333

662338

662342

662335

662341

662349

662343

662049

662348

662345

662337

662334

662033

662066

662055

662052

662068

662059

662064

662047

662070

662069

662062

662063

662054

662061

662065

662050

662346

662347

662350

662340

662031

662331

662339

662043

662332

662067

662042

662058

662056

662051

662046

662040

662057

662071

662060

662044

662040

662041

662048

662053

662336

662336

662045

8th Street

Figure 11. Detections of chloroform mass in soil-gas samplers, 8th Street site, Fort Gordon, Georgia, 

June 29–August 12, 2011.
18 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

Chamberlain Avenue

0 20 40 80 FEET

0 5 10 20 METERS

N

662313

662301

662298 662297

662313

662318

662322

662314

662296

662319

662294

662314

662293

662315

662321

662302

662306

662303

662316

662299

662295

662311

662308

662304

662308 662309

662305

662300

662312

662317

662312

662307

662320

662310

0 to 10

>10 to 60

>60 to 200

> 200

EXPLANATION

Total petroleum hydrocarbons mass,

 in micrograms and sampler number

Figure 12. Detections of total petroleum hydrocarbons mass in soil-gas samplers, Chamberlain Avenue site, 

Fort Gordon, Georgia, July 7–12, 2011.
Figures 19

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

Chamberlain Avenue

0 20 40 80 FEET

0 5 10 20 METERS

N

662301

662298 662297

662318

662322

662296

662319

662294

662314

662293

662315

662321

662302

662306

662303

662316

662299

662295

662311

662304

662309

662305

662300

662317

662307 662310

662314

662313

662301

662298 662297

662313

662318

662322

662314

662296

662319

662294

662314

662293

662315

662321

662302

662306

662303

662316

662299

662295

662311

662308

662304

662308 662309

662305

662300

662312

662317

662312

662307

662320

662310

No detection

0.02 to 0.1

> 0.1 to 0.22

> 0.22

EXPLANATION

Benzene, toluene, ethylbenzene, and xylenes mass,

 in micrograms and sampler number

Figure 13. Detections of combined mass of benzene, toluene, ethylbenzene, and xylenes in soil-gas samplers, 

Chamberlain Avenue site, Fort Gordon, Georgia, July 7–12, 2011.
20 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

Chamberlain Avenue

0 20 40 80 FEET

0 5 10 20 METERS

N

662301

662298 662297

662313

662318

662322

662296

662319

662294

662314

662293

662315

662321

662302

662306

662303

662316

662299

662295

662311

662304

662309

662305

662300

662317

662307 662310

662306

662301

662298 662297

662313

662318

662322

662299

662296

662319

662294

662314

662293

662315

662321

662302

662306

662303

662316

662299

662295

662311

662308

662304

662308 662309

662305

662300

662307

662317

662312

662307

662320

662310

No detection

0.01 to 1.0

> 1.0 to 10

> 10

EXPLANATION

Combined massess of undecane, tridecane, and

pentadecane, in micrograms and sampler number

Figure 14. Detections of combined mass of undecane, tridecane, and pentadecane (C11, C13, and C15 diesel compounds) in 

soil-gas samplers, Chamberlain Avenue site, Fort Gordon, Georgia, July 7–12, 2011.
Figures 21

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

Chamberlain Avenue

0 20 40 80 FEET

0 5 10 20 METERS

N

662301

662298 662297

662313

662318

662322

662296

662319

662294

662314

662293

662315

662321

662302

662306

662303

662316

662299

662295

662311

662304

662309

662305

662300

662317

662312

662307

662320

662310

662305

662301

662298 662297

662313

662318

662322

662306

662296

662319

662294

662314

662293

662315

662321

662302

662306

662303

662316

662299

662295

662311

662308

662304

662308 662309

662305

662300

662317

662312

662307

662320

662310

No detection

0 to 0.1

> 0.1

EXPLANATION

Trimethylbenzenes mass, in micrograms

and sampler number

Figure 15. Detections of trimethylbenzenes mass in soil-gas samplers, Chamberlain Avenue site, Fort Gordon, 

Georgia, July 7–12, 2011.
22 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

Chamberlain Avenue

0 20 40 80 FEET

0 5 10 20 METERS

N

662301

662298 662297

662313

662318

662322

662296

662319

662294

662314

662293

662315

662321

662302

662306

662303

662316

662299

662295

662311

662304

662308 662309

662305

662300

662317

662312

662307

662320

662310

662299

662301

662298 662297

662313

662318

662322

662300

662296

662319

662294

662314

662293

662315

662321

662302

662306

662303

662316

662299

662295

662311

662314

662304

662308 662309

662305

662300

662317

662312

662307

662320

662310

No detection

0.03 to 0.1

> 0.1

EXPLANATION

Tetrachloroethylene mass, in micrograms

and sampler number

Figure 16. Detections of tetrachloroethylene mass in soil-gas samplers, Chamberlain Avenue site, Fort Gordon, Georgia, 

July 7–12, 2011.
Figures 23

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

67th Expeditionary Signal

 Battalion Motor Pool

0 25 50 100 FEET

0 5 10 20 METERS

N

662233

662230

662200

662199

662232

662201

662206

662234

662210

662197

662214

662198

662207

662233

662219

662223

662203

662208

662220

662204

662227

662224 662221

662230

662228

662225

662216

662211

662231

662229

662226

662213

662205

662212

662209

662217

662202

662196

662222

662215

662218

662200

662232

12th Street

EXPLANATION

Total petroleum hydrocarbons mass,

 in micrograms and sampler number

0.15 to 2

> 2 to 10

> 10 to 20

> 20

Figure 17. Detections of total petroleum hydrocarbons mass in soil-gas samplers, 12th Street site, 

Fort Gordon, Georgia, July 18–22, 2011.
24 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

67th Expeditionary Signal

 Battalion Motor Pool

0 25 50 100 FEET

0 5 10 20 METERS

N

662232

662206

662210

662214

662207

662219

662223

662208

662220

662227

662224 662221

662228

662225

662216

662211

662229

662226

662213

662205

662212

662209

662217

662222

662215

662218

662199 662201

662204 662203 662231 662230 662202

662200

662231

662201

662199

662232

662201

662206

662234

662210

662197

662214

662198

662207

662233

662219

662223

662203

662208

662220

662204

662227

662224 662221

662230

662228

662225

662216

662211

662231

662229

662226

662213

662205

662212

662209

662217

662202

662196

662222

662215

662218

662200

662232

12th Street

EXPLANATION

Toluene mass, in micrograms

and sampler number

No detection

0.02 to 0.1

>0.1

Figure 18. Detections of toluene mass in soil-gas samplers, 12th Street site, Fort Gordon, Georgia, July 18–22, 2011.
Figures 25

Base from U.S. Army, 2010

Universal Transverse Mercator projection, zone 17

67th Expeditionary Signal

 Battalion Motor Pool

0 25 50 100 FEET

0 5 10 20 METERS

N

662206

662210

662214

662207

662219

662223

662208

662220

662227

662224 662221

662228

662225

662216

662211

662229

662226

662213

662205

662212

662209

662217

662222

662215

662218

662199 662201

662204 662203 662231 662230 662202

662200 662199

662232

662201

662206

662234

662210

662197

662214

662198

662207

662233

662219

662223

662203

662208

662220

662204

662227

662224 662221

662230

662228

662225

662216

662211

662231

662229

662226

662213

662205

662212

662209

662217

662202

662196

662222

662215

662218

662200

12th Street

EXPLANATION

Combined masses of undecane, tridecane, and

 pentadecane, in micrograms and sampler number

No detection

0 to 0.02

> 0.02

662203

662232

662229

Figure 19. Detections of combined mass of undecane, tridecane, and pentadecane (C11, C13, and C15 diesel compounds) in 

soil-gas samplers, 12th Street site, Fort Gordon, Georgia, July 18–22, 2011.
26 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Table 1. Mass of volatile organic compounds detected in soil-gas samplers deployed on June 29, 2011, collected from the 

8th Street site, Fort Gordon, Georgia. 

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and xylenes; ---, not 

applicable; m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; DCE, dichloroethylene; MTBE, methyl 

tert-butyl ether; DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, perchloroethylene; DCB, dichlorobenzene; CCl4, carbon 

tetrachloride; nd, not detected; bdl, below detection level]

Sampler

Number

TPH

(μg)

BTEX

(μg)

Benzene

(μg)

Toluene

(μg)

Ethylbenzene

(μg)

m-,pXylene

(μg)

o-Xylene

(μg)

C11, C13, 

& C15

(μg)

Undecane

(μg)

Tridecane

(μg)

Pentadecane

(μg)

Trimethylbenzene

(μg)

MDL= 0.02 --- 0.01 0.01 0.02 0.02 0.01 --- 0.01 0.01 0.01 ---

662031 1.28 0.01 0.01 nd nd nd nd 0.03 0.03 nd nd nd

662032 1.24 nd nd nd nd nd nd nd nd nd nd nd

662033 1.15 0.00 bdl nd nd nd nd nd nd nd nd nd

662040DL1 53.94 0.03 nd 0.03 nd nd nd nd nd nd nd nd

662041 17.05 0.04 0.02 0.03 nd nd nd 0.01 nd nd 0.01 nd

662042 0.81 0.00 nd bdl nd nd nd nd nd nd nd nd

662043 1.88 0.00 bdl nd nd nd nd nd nd nd nd nd

662044 80.47 0.04 0.03 0.01 nd bdl nd 0.33 nd nd 0.33 nd

662045DL1 146.10 0.25 nd 0.25 nd nd nd 0.02 nd nd 0.02 nd

662046 4.30 0.01 0.01 bdl nd nd nd nd nd nd nd nd

662047 0.27 0.02 0.02 nd nd nd nd nd nd nd nd nd

662048 13.14 0.03 0.02 0.01 nd nd nd nd nd nd nd nd

662049 0.40 nd nd nd nd nd nd nd nd nd nd nd

662050 0.96 0.01 0.01 nd nd nd nd nd nd nd nd nd

662051 1.03 0.02 0.02 bdl nd nd nd nd nd nd nd nd

662052 0.66 0.02 0.02 nd nd nd nd nd nd nd nd nd

662053 15.80 0.07 0.04 0.03 nd nd nd nd nd nd nd nd

662054 0.29 0.01 0.01 nd nd nd nd nd nd nd nd nd

662055 0.81 0.03 0.03 nd nd nd nd nd nd nd nd nd

662056 0.46 0.00 bdl bdl nd nd nd nd nd nd nd nd

662057 14.16 0.06 0.02 0.04 nd nd nd nd nd nd nd nd

662058 0.74 0.00 bdl bdl nd nd nd nd nd nd nd nd

662059 1.34 0.02 0.02 nd nd nd nd nd nd nd nd nd

662060 0.79 0.01 nd 0.01 nd bdl nd nd nd nd nd nd

662061 0.21 0.01 0.01 nd nd nd nd nd nd nd nd nd

662062 0.17 0.02 0.02 nd nd nd nd nd nd nd nd nd

662063 0.17 0.02 0.02 nd nd nd nd nd nd nd nd nd

662064 0.43 0.02 0.02 nd nd nd nd nd nd nd nd nd

662065 1.38 0.01 0.01 nd nd nd nd nd nd nd nd nd

662066 0.21 0.04 bdl nd bdl 0.02 0.02 nd nd nd nd 0.01

662067 1.57 0.01 0.01 nd nd nd nd nd nd nd nd nd

662068 0.35 0.02 0.02 nd nd bdl nd nd nd nd nd 0.00

662069 0.29 0.02 0.02 nd nd nd nd nd nd nd nd nd

662070 10.47 0.02 0.02 nd nd nd nd nd nd nd nd nd

662071 0.66 0.01 bdl 0.01 nd nd nd nd nd nd nd nd

Trip Blanks

662072 0.04 nd nd nd nd nd nd nd nd nd nd nd

662073 0.03 nd nd nd nd nd nd nd nd nd nd nd

662074 0.10 nd nd nd nd nd nd nd nd nd nd nd

662075 0.02 nd nd nd nd nd nd nd nd nd nd nd
Tables 27

Table 1. Mass of volatile organic compounds detected in soil-gas samplers deployed on June 29, 2011, collected from the 8th Street 

site, Fort Gordon, Georgia.—Continued.

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and xylenes; ---, not applicable; 

m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; DCE, dichloroethylene; MTBE, methyl tert-butyl ether; 

DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, perchloroethylene; DCB, dichlorobenzene; CCl4, carbon tetrachloride; nd, not 

detected; bdl, below detection level]

Sampler

Number

1,2,4-Trimethylbenzene

(μg)

1,3,5-Trimethylbenzene

(μg)

c,t-1,2-

DCE

(μg)

t-1,2-

DCE

(μg)

c-1,2-DCE

(μg)

Naphthalene

(μg)

2-MethylNaphthalene

(μg)

MTBE

(μg)

1,1-

DCA

(μg)

1,1,1-

TCA

(μg)

1,2-

DCA

(μg)

TCE 

(μg)

Octane

(μg)

MDL= 0.01 0.02 --- 0.05 0.02 0.01 0.01 0.03 0.02 0.01 0.01 0.02 0.02

662031 nd nd nd nd nd nd nd nd nd nd nd nd nd

662032 nd nd nd nd nd nd nd nd nd nd nd nd nd

662033 nd nd nd nd nd nd nd nd nd nd nd bdl nd

662040DL1 nd nd nd nd nd nd nd nd nd nd nd nd nd

662041 nd nd nd nd nd nd nd nd nd nd nd nd nd

662042 nd nd nd nd nd nd nd nd nd nd nd nd nd

662043 nd nd nd nd nd nd nd nd nd nd nd nd nd

662044 nd nd nd nd nd nd bdl nd nd nd nd nd nd

662045DL1 nd nd nd nd nd nd nd nd nd nd nd nd nd

662046 nd nd nd nd nd nd nd nd nd nd nd nd nd

662047 nd nd nd nd nd nd nd nd nd nd nd nd nd

662048 nd nd nd nd nd nd nd nd nd nd nd nd nd

662049 nd nd nd nd nd nd nd nd nd nd nd nd nd

662050 nd nd nd nd nd nd nd nd nd nd nd nd nd

662051 nd nd nd nd nd nd nd nd nd nd nd nd nd

662052 nd nd nd nd nd nd nd nd nd nd nd nd nd

662053 nd nd nd nd nd nd nd nd nd nd nd nd nd

662054 nd nd nd nd nd nd nd nd nd nd nd nd nd

662055 nd nd nd nd nd nd nd nd nd nd nd nd nd

662056 nd nd nd nd nd nd nd nd nd nd nd nd nd

662057 nd nd nd nd nd nd nd nd nd nd nd nd nd

662058 nd nd nd nd nd nd nd nd nd nd nd nd nd

662059 nd nd nd nd nd nd nd nd nd nd nd nd nd

662060 nd nd nd nd nd nd nd nd nd nd nd nd nd

662061 nd nd nd nd nd nd bdl nd nd nd nd nd nd

662062 nd nd nd nd nd nd nd nd nd nd nd nd nd

662063 nd nd nd nd nd nd nd nd nd nd nd nd nd

662064 nd nd nd nd nd nd nd nd nd nd nd nd nd

662065 nd nd nd nd nd bdl bdl nd nd nd nd nd nd

662066 0.01 bdl nd nd nd bdl bdl nd nd nd nd nd nd

662067 nd nd nd nd nd nd nd nd nd nd nd nd nd

662068 bdl nd nd nd nd nd nd nd nd nd nd nd nd

662069 nd nd nd nd nd nd nd nd nd nd nd nd nd

662070 nd nd nd nd nd nd nd nd nd nd nd nd nd

662071 nd nd nd nd nd nd nd nd nd nd nd nd nd

Trip Blanks

662072 nd nd nd nd nd nd nd nd nd nd nd nd nd

662073 nd nd nd nd nd nd nd nd nd nd nd nd nd

662074 nd nd nd nd nd nd nd nd nd nd nd nd nd

662075 nd nd nd nd nd nd nd nd nd nd nd nd nd
28 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Table 1. Mass of volatile organic compounds detected in soil-gas samplers deployed on June 29, 2011, collected 

from the 8th Street site, Fort Gordon, Georgia—Continued.

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and 

xylenes; ---, not applicable; m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; 

DCE, dichloroethylene; MTBE, methyl tert-butyl ether; DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, 

perchloroethylene; DCB, dichlorobenzene; CCl4, carbon tetrachloride; nd, not detected; bdl, below detection level]

Sampler

Number

PCE 

(μg)

1-4-

DCB

(μg)

Chloroform

(μg)

CCl4

(μg)

1,1,2-

TCA

(μg)

Chlorobenzene

(μg)

1,1,1,2-Tetrachloroethane

(μg)

1,1,2,2-Tetrachloroethane

(μg)

1,3-Dichlorobenzene

(μg)

1,2-Dichlorobenzene

(μg)

MDL= 0.02 0.01 0.01 0.03 0.02 0.03 0.02 0.01 0.01 0.01

662031 nd nd 0.10 nd nd nd nd nd nd nd

662032 nd nd nd nd nd nd nd nd nd nd

662033 0.04 nd nd nd nd nd nd nd nd nd

662040DL1 nd nd 0.23 nd nd nd nd nd nd nd

662041 nd nd 0.13 nd nd nd nd nd nd nd

662042 nd nd nd nd nd nd nd nd nd nd

662043 nd nd 0.03 nd nd nd nd nd nd nd

662044 nd nd nd nd nd nd nd nd nd nd

662045DL1 nd nd nd nd nd nd nd nd nd nd

662046 nd nd 0.03 nd nd nd nd nd nd nd

662047 nd nd nd nd nd nd nd nd nd nd

662048 nd nd 0.02 nd nd nd nd nd nd nd

662049 nd nd nd nd nd nd nd nd nd nd

662050 nd nd nd nd nd nd nd nd nd nd

662051 nd nd nd nd nd nd nd nd nd nd

662052 nd nd nd nd nd nd nd nd nd nd

662053 nd nd 0.01 nd nd nd nd nd nd nd

662054 nd nd nd nd nd nd nd nd nd nd

662055 bdl nd nd nd nd nd nd nd nd nd

662056 nd nd nd nd nd nd nd nd nd nd

662057 nd nd nd nd nd nd nd nd nd nd

662058 nd nd nd nd nd nd nd nd nd nd

662059 bdl nd nd nd nd nd nd nd nd nd

662060 nd nd nd nd nd nd nd nd nd nd

662061 nd nd nd nd nd nd nd nd nd nd

662062 nd nd nd nd nd nd nd nd nd nd

662063 nd nd nd nd nd nd nd nd nd nd

662064 nd nd nd nd nd nd nd nd nd nd

662065 bdl nd nd nd nd nd nd nd nd nd

662066 nd nd nd nd nd nd nd nd nd nd

662067 nd nd 0.01 nd nd nd nd nd nd nd

662068 nd nd nd nd nd nd nd nd nd nd

662069 nd nd nd nd nd nd nd nd nd nd

662070 nd nd nd nd nd nd nd nd nd nd

662071 nd nd nd nd nd nd nd nd nd nd

Trip Blanks

662072 nd nd nd nd nd nd nd nd nd nd

662073 nd nd nd nd nd nd nd nd nd nd

662074 nd nd nd nd nd nd nd nd nd nd

662075 nd nd nd nd nd nd nd nd nd nd

1

Levels of volatile organic compounds in the vapor phase of the soil-gas sampler, as detected by a photoionization detector, exceeded the 

maximum analytical limit of gas chromotograph and were diluted by a factor of 10 prior to analysis. The MDLs of all diluted samples are a 

factor of 10 greater than the MDLs of undiluted samples.
Tables 29

Table 2. Mass of volatile organic compounds detected in soil-gas samplers deployed on August 8, 2011, collected from the 

8th Street site, Fort Gordon, Georgia. 

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and xylenes; ---, not 

applicable; m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; DCE, dichloroethylene; MTBE, methyl 

tert-butyl ether; DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, perchloroethylene; DCB, dichlorobenzene; CCl4, carbon 

tetrachloride; nd, not detected; bdl, below detection level]

Sampler

Number

TPH

(μg)

BTEX

(μg)

Benzene

(μg)

Toluene

(μg)

Ethylbenzene

(μg)

m-,pXylene

(μg)

o-Xylene

(μg)

C11, C13, 

& C15

(μg)

Undecane

(μg)

Tridecane

(μg)

Pentadecane

(μg)

Trimethylbenzene

(μg)

MDL= 0.02 --- 0.01 0.01 0.02 0.02 0.01 --- 0.01 0.01 0.01 ---

662331 5.92 nd nd nd nd nd nd 0.01 0.01 nd nd nd

662332 10.22 nd nd nd nd nd nd nd nd nd nd nd

662333 1.06 nd nd nd nd nd nd nd nd nd nd nd

662334 0.04 nd nd nd nd nd nd nd nd nd nd nd

662335 0.68 nd nd nd nd nd nd nd nd nd nd nd

662336 24.73 0.11 nd 0.11 nd nd nd bdl nd nd bdl nd

662337 0.07 nd nd nd nd nd nd nd nd nd nd nd

662338 0.85 nd nd nd nd nd nd nd nd nd nd nd

662339 11.82 nd nd nd nd nd nd nd nd nd nd nd

662340 3.07 nd nd nd nd nd nd nd nd nd nd nd

662341 0.64 nd nd nd nd nd nd 0.01 0.01 nd nd nd

662342 0.84 nd nd nd nd nd nd nd nd nd nd nd

662343 0.46 nd nd nd nd nd nd nd nd nd nd nd

662344 bdl nd nd nd nd nd nd nd nd nd nd nd

662345 0.16 nd nd nd nd nd nd nd nd nd nd nd

662346 0.86 nd nd nd nd nd nd 0.72 0.71 0.01 bdl nd

662347 8.63 nd nd nd nd nd nd 6.59 5.98 0.19 0.42 nd

662348 0.31 nd nd nd nd nd nd nd nd nd nd nd

662349 0.62 nd nd nd nd nd nd nd nd nd nd nd

662350 1.68 nd nd nd nd nd nd 1.29 1.20 0.03 0.07 nd

Trip Blanks

662351 bdl nd nd nd nd nd nd nd nd nd nd nd

662352 nd nd nd nd nd nd nd nd nd nd nd nd
30 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Table 2. Mass of volatile organic compounds detected in soil-gas samplers deployed on June 29, 2011, collected from the 8th Street 

site, Fort Gordon, Georgia.—Continued.

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and xylenes; ---, not applicable; 

m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; DCE, dichloroethylene; MTBE, methyl tert-butyl ether; 

DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, perchloroethylene; DCB, dichlorobenzene; CCl4, carbon tetrachloride; nd, not 

detected; bdl, below detection level]

Sampler

Number

1,2,4-Trimethylbenzene

(μg)

1,3,5-Trimethylbenzene

(μg)

c,t-1,2-

DCE

(μg)

t-1,2-

DCE

(μg)

c-1,2-DCE

(μg)

Naphthalene

(μg)

2-MethylNaphthalene

(μg)

MTBE

(μg)

1,1-

DCA

(μg)

1,1,1-

TCA

(μg)

1,2-

DCA

(μg)

TCE 

(μg)

Octane

(μg)

MDL= 0.01 0.02 --- 0.05 0.02 0.01 0.01 0.03 0.02 0.01 0.01 0.02 0.02

662331 nd nd nd nd nd nd nd nd nd nd nd nd nd

662332 nd nd nd nd nd nd nd nd nd nd nd nd nd

662333 nd nd nd nd nd nd nd nd nd nd nd nd nd

662334 nd nd nd nd nd nd nd nd nd nd nd nd nd

662335 nd nd nd nd nd nd nd nd nd nd nd nd nd

662336 nd nd nd nd nd nd nd nd nd nd nd nd nd

662337 nd nd nd nd nd nd nd nd nd nd nd nd nd

662338 nd nd nd nd nd nd nd nd nd nd nd nd nd

662339 nd nd nd nd nd nd nd nd nd nd nd nd nd

662340 nd nd nd nd nd nd nd nd nd nd nd nd nd

662341 nd nd nd nd nd nd nd nd nd nd nd nd nd

662342 nd nd nd nd nd nd nd nd nd nd nd nd nd

662343 nd nd nd nd nd nd nd nd nd nd nd nd nd

662344 nd nd nd nd nd nd nd nd nd nd nd nd nd

662345 nd nd nd nd nd nd nd nd nd nd nd nd nd

662346 nd nd nd nd nd nd nd nd nd nd nd nd nd

662347 nd nd nd nd nd nd nd nd nd nd nd nd nd

662348 nd nd nd nd nd nd nd nd nd nd nd nd nd

662349 nd nd nd nd nd nd nd nd nd nd nd nd nd

662350 nd nd nd nd nd nd nd nd nd nd nd nd nd

Trip Blanks

662072 nd nd nd nd nd nd nd nd nd nd nd nd nd

662073 nd nd nd nd nd nd nd nd nd nd nd nd nd
Tables 31

Table 2. Mass of volatile organic compounds detected in soil-gas samplers deployed on August 8, 2011, collected 

from the 8th Street site, Fort Gordon, Georgia—Continued.

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and 

xylenes; ---, not applicable; m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; 

DCE, dichloroethylene; MTBE, methyl tert-butyl ether; DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, 

perchloroethylene; DCB, dichlorobenzene; CCl4, carbon tetrachloride; nd, not detected; bdl, below detection level]

Sampler

Number

PCE 

(μg)

1-4-

DCB

(μg)

Chloroform

(μg)

CCl4

(μg)

1,1,2-

TCA

(μg)

Chlorobenzene

(μg)

1,1,1,2-Tetrachloroethane

(μg)

1,1,2,2-Tetrachloroethane

(μg)

1,3-Dichlorobenzene

(μg)

1,2-Dichlorobenzene

(μg)

MDL= 0.02 0.01 0.01 0.03 0.02 0.03 0.02 0.01 0.01 0.01

662331 nd nd 0.06 nd nd nd nd nd nd nd

662332 nd nd 0.03 nd nd nd nd nd nd nd

662333 nd nd nd nd nd nd nd nd nd nd

662334 nd nd nd nd nd nd nd nd nd nd

662335 nd nd nd nd nd nd nd nd nd nd

662336 nd nd nd nd nd nd nd nd nd nd

662337 nd nd nd nd nd nd nd nd nd nd

662338 nd nd nd nd nd nd nd nd nd nd

662339 nd nd 0.06 nd nd nd nd nd nd nd

662340 nd nd 0.28 nd nd nd nd nd nd nd

662341 nd nd nd nd nd nd nd nd nd nd

662342 nd nd nd nd nd nd nd nd nd nd

662343 nd nd nd nd nd nd nd nd nd nd

662344 nd nd nd nd nd nd nd nd nd nd

662345 nd nd nd nd nd nd nd nd nd nd

662346 nd nd nd nd nd nd nd nd nd nd

662347 nd nd nd nd nd nd nd nd nd nd

662348 nd nd nd nd nd nd nd nd nd nd

662349 nd nd nd nd nd nd nd nd nd nd

662350 nd nd nd nd nd nd nd nd nd nd

Trip Blanks

662072 nd nd nd nd nd nd nd nd nd nd

662073 nd nd nd nd nd nd nd nd nd nd
32 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Table 3. Mass of volatile organic compounds detected in soil-gas samplers deployed on July 7, 2011, collected from the 

Chamberlain Avenue site, Fort Gordon, Georgia. 

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and xylenes; ---, not applicable; 

m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; DCE, dichloroethylene; MTBE, methyl tert-butyl ether; 

DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, perchloroethylene; DCB, dichlorobenzene; CCl4, carbon tetrachloride; nd, not 

detected; bdl, below detection level]

Sampler

Number

TPH

(μg)

BTEX

(μg)

Benzene

(μg)

Toluene

(μg)

Ethylbenzene

(μg)

m-,pXylene

(μg)

o-Xylene

(μg)

C11, C13, 

& C15

(μg)

Undecane

(μg)

Tridecane

(μg)

Pentadecane

(μg)

Trimethylbenzene

(μg)

MDL= 0.02 --- 0.01 0.01 0.02 0.02 0.01 --- 0.01 0.01 0.01 ---

662293 6.93 nd nd nd nd nd nd nd nd nd nd nd

662294 2.20 nd nd nd nd nd nd nd nd nd nd nd

662295 0.87 0.13 nd 0.13 nd nd nd nd nd nd nd nd

662296 6.25 0.08 0.04 0.04 nd nd nd 0.07 0.03 0.04 nd nd

662297 30.81 nd nd nd nd nd nd 0.76 0.11 0.46 0.19 nd

662298 36.37 0.21 0.02 0.19 nd nd nd 1.51 0.07 0.95 0.49 nd

662299 6.42 nd nd nd nd nd nd nd nd nd nd nd

662300 426.36 0.03 0.03 nd nd nd nd 30.97 1.67 13.27 16.02 0.00

662301 59.92 0.02 nd 0.02 nd nd nd 1.89 0.25 0.79 0.85 nd

662302 4.35 0.05 0.05 nd nd nd nd 0.08 0.05 0.03 nd nd

662303 1.96 0.03 0.03 nd nd nd nd 0.10 0.03 0.05 0.01 nd

662304 230.07 0.06 nd 0.06 nd nd nd 15.85 0.45 5.59 9.81 nd

662305 340.33 0.06 nd 0.02 nd 0.02 0.02 29.80 0.94 11.40 17.46 0.07

662306 2.53 nd nd nd nd nd nd 0.01 0.01 nd nd nd

662307 102.17 0.02 nd 0.02 nd nd nd 6.46 0.68 2.39 3.39 0.09

662308 421.69 0.73 nd 0.31 0.05 0.24 0.13 28.65 5.80 12.00 10.85 1.11

662309 356.36 0.22 nd 0.17 nd 0.03 0.02 27.76 6.29 12.46 9.01 0.08

662310 195.20 0.16 0.03 0.12 nd nd nd 8.19 0.84 3.87 3.48 0.00

662311 2.75 0.07 0.03 0.04 nd nd nd 0.04 0.02 nd 0.02 nd

662312 120.24 0.12 nd 0.05 nd 0.05 0.03 6.95 1.12 2.74 3.08 0.13

662313 58.52 0.09 nd 0.06 nd 0.02 0.02 3.11 1.32 1.00 0.79 0.16

662314 5.05 nd nd nd nd nd nd 0.01 0.01 nd nd nd

662315 7.07 0.06 nd 0.06 nd nd nd 0.03 bdl 0.03 nd nd

662316 3.22 nd nd nd nd nd nd 0.11 0.03 0.06 0.03 nd

662317 167.30 0.62 nd 0.34 0.05 0.16 0.07 8.56 3.78 3.78 1.00 0.75

662318 26.82 0.43 0.05 0.28 0.02 0.05 0.03 0.18 0.18 nd nd 0.05

662319 1.86 0.08 0.05 nd nd 0.02 0.01 0.03 0.03 nd nd nd

662320 67.05 0.11 0.04 nd nd 0.03 0.04 2.16 0.60 1.03 0.53 0.06

662321 1.13 nd nd nd nd nd nd nd nd nd nd nd

662322 10.06 nd nd nd nd nd nd 0.05 0.03 0.02 nd 0.05

Trip Blanks

662323 bdl nd nd nd nd nd nd nd nd nd nd nd

662328 nd nd nd nd nd nd nd nd nd nd nd nd

662329 nd nd nd nd nd nd nd nd nd nd nd nd

662330 0.02 nd nd nd nd nd nd nd nd nd nd nd
Tables 33

Table 3. Mass of volatile organic compounds detected in soil-gas samplers deployed on July 7, 2011, collected from the 

Chamberlain Avenue site, Fort Gordon, Georgia.—Continued.

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and xylenes; ---, not applicable; 

m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; DCE, dichloroethylene; MTBE, methyl tert-butyl ether; 

DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, perchloroethylene; DCB, dichlorobenzene; CCl4, carbon tetrachloride; nd, not 

detected; bdl, below detection level]

Sampler

Number

1,2,4-Trimethylbenzene

(μg)

1,3,5-Trimethylbenzene

(μg)

c,t-1,2-

DCE

(μg)

t-1,2-

DCE

(μg)

c-1,2-DCE

(μg)

Naphthalene

(μg)

2-MethylNaphthalene

(μg)

MTBE

(μg)

1,1-

DCA

(μg)

1,1,1-

TCA

(μg)

1,2-

DCA

(μg)

TCE 

(μg)

Octane

(μg)

MDL= 0.01 0.02 --- 0.05 0.02 0.01 0.01 0.03 0.02 0.01 0.01 0.02 0.02

662293 nd nd nd nd nd nd nd nd nd nd nd nd nd

662294 nd nd nd nd nd nd nd nd nd nd nd nd nd

662295 nd nd nd nd nd nd nd nd nd nd nd nd nd

662296 nd nd nd nd nd nd 0.02 nd nd nd nd nd nd

662297 nd nd nd nd nd nd nd nd nd nd nd nd nd

662298 nd nd nd nd nd nd nd nd nd nd nd nd nd

662299 nd nd nd nd nd nd nd nd nd nd nd nd nd

662300 nd bdl nd nd nd 0.06 0.53 nd nd nd nd nd nd

662301 nd nd nd nd nd 0.04 0.05 nd nd nd nd nd nd

662302 nd nd nd nd nd nd nd nd nd nd nd nd nd

662303 nd nd nd nd nd nd nd nd nd nd nd nd nd

662304 nd nd nd nd nd 0.04 0.04 nd nd nd nd nd nd

662305 0.07 nd nd nd nd 0.13 0.31 nd nd nd nd nd nd

662306 nd nd nd nd nd nd nd nd nd nd nd nd nd

662307 0.07 0.03 nd nd nd 0.04 0.09 nd nd nd nd nd nd

662308 0.73 0.38 nd nd nd 0.25 1.12 nd nd nd nd nd 0.11

662309 0.08 nd nd nd nd 0.17 1.82 nd nd nd nd nd nd

662310 bdl nd nd nd nd nd 0.02 nd nd nd nd nd nd

662311 nd nd nd nd nd nd nd nd nd nd nd nd nd

662312 0.13 nd nd nd nd 0.07 0.14 nd nd nd nd nd 0.05

662313 0.11 0.05 nd nd nd nd 0.07 nd nd nd nd nd nd

662314 nd nd nd nd nd nd bdl nd nd nd nd nd nd

662315 nd nd nd nd nd nd bdl nd nd nd nd nd nd

662316 nd nd nd nd nd nd nd nd nd nd nd nd nd

662317 0.49 0.26 nd nd nd 0.06 0.26 nd nd nd nd nd 0.10

662318 0.03 0.02 nd nd nd nd 0.04 nd nd nd nd nd 0.05

662319 nd nd nd nd nd nd nd nd nd nd nd nd nd

662320 0.03 0.03 nd nd nd 0.03 0.06 nd nd nd nd nd nd

662321 nd nd nd nd nd nd nd nd nd nd nd nd nd

662322 0.03 0.02 nd nd nd nd 0.01 nd nd nd nd bdl nd

Trip Blanks

662323 nd nd nd nd nd nd nd nd nd nd nd nd nd

662328 nd nd nd nd nd nd nd nd nd nd nd nd nd

662329 nd nd nd nd nd nd nd nd nd nd nd nd nd

662330 nd nd nd nd nd nd nd nd nd nd nd nd nd
34 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Table 3. Mass of volatile organic compounds detected in soil-gas samplers deployed on July 7, 2011, collected from 

the Chamberlain Avenue site, Fort Gordon, Georgia—Continued.

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and 

xylenes; ---, not applicable; m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; 

DCE, dichloroethylene; MTBE, methyl tert-butyl ether; DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, 

perchloroethylene; DCB, dichlorobenzene; CCl4, carbon tetrachloride; nd, not detected; bdl, below detection level]

Sampler

Number

PCE 

(μg)

1-4-

DCB

(μg)

Chloroform

(μg)

CCl4

(μg)

1,1,2-

TCA

(μg)

Chlorobenzene

(μg)

1,1,1,2-Tetrachloroethane

(μg)

1,1,2,2-Tetrachloroethane

(μg)

1,3-Dichlorobenzene

(μg)

1,2-Dichlorobenzene

(μg)

MDL= 0.02 0.01 0.01 0.03 0.02 0.03 0.02 0.01 0.01 0.01

662293 0.23 nd nd nd nd nd nd nd nd nd

662294 0.90 nd nd nd nd nd nd nd nd nd

662295 0.03 nd nd nd nd nd nd nd nd nd

662296 nd nd nd nd nd nd nd nd nd nd

662297 0.05 nd nd nd nd nd nd nd nd nd

662298 0.07 nd nd nd nd nd nd nd nd nd

662299 0.04 nd nd nd nd nd nd nd nd nd

662300 nd nd nd nd nd nd nd nd nd nd

662301 nd nd nd nd nd nd nd nd nd nd

662302 0.06 nd nd nd nd nd nd nd nd nd

662303 0.05 nd nd nd nd nd nd nd nd nd

662304 nd nd nd nd nd nd nd nd nd nd

662305 nd nd nd nd nd nd nd nd nd nd

662306 0.06 nd nd nd nd nd nd nd nd nd

662307 0.03 nd nd nd nd nd nd nd nd nd

662308 nd nd nd nd nd nd nd nd nd nd

662309 0.10 nd nd nd nd nd nd nd nd nd

662310 nd nd nd nd nd nd nd nd nd nd

662311 0.03 nd nd nd nd nd nd nd nd nd

662312 nd nd nd nd nd nd nd nd nd nd

662313 0.07 nd nd nd nd nd nd nd nd nd

662314 0.30 nd nd nd nd nd nd nd nd nd

662315 0.08 nd nd nd nd nd nd nd nd nd

662316 0.04 nd nd nd nd nd nd nd nd nd

662317 nd nd nd nd nd nd nd nd nd nd

662318 nd nd nd nd nd nd nd nd nd nd

662319 nd nd nd nd nd nd nd nd nd nd

662320 0.04 nd nd nd nd nd nd nd nd nd

662321 0.07 nd nd nd nd nd nd nd nd nd

662322 0.05 nd nd nd nd nd nd nd nd nd

Trip Blanks

662323 nd nd nd nd nd nd nd nd nd nd

662328 nd nd nd nd nd nd nd nd nd nd

662329 nd nd nd nd nd nd nd nd nd nd

662330 nd nd nd nd nd nd nd nd nd nd
Tables 35

Table 4. Mass of volatile organic compounds detected in soil-gas samplers deployed on July 18, 2011, collected from the 

12th Street site, Fort Gordon, Georgia. 

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and xylenes; ---, not 

applicable; m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; DCE, dichloroethylene; MTBE, methyl 

tert-butyl ether; DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, perchloroethylene; DCB, dichlorobenzene; CCl4, carbon 

tetrachloride; nd, not detected; bdl, below detection level]

Sampler

Number

TPH

(μg)

BTEX

(μg)

Benzene

(μg)

Toluene

(μg)

Ethylbenzene

(μg)

m-,pXylene

(μg)

o-Xylene

(μg)

C11, C13, 

& C15

(μg)

Undecane

(μg)

Tridecane

(μg)

Pentadecane

(μg)

Trimethylbenzene

(μg)

MDL= 0.02 --- 0.01 0.01 0.02 0.02 0.01 --- 0.01 0.01 0.01 ---

662196 0.15 nd nd nd nd nd nd nd nd nd nd nd

662197 5.94 nd nd nd nd nd nd nd nd nd nd nd

662198 2.55 nd nd nd nd nd nd nd nd nd nd nd

662199 14.36 0.00 nd nd nd bdl nd nd nd nd nd 0.02

662200 24.37 0.03 nd 0.03 nd nd nd 0.02 nd nd 0.02 nd

662201 16.18 0.02 nd 0.02 nd nd nd nd nd nd nd nd

662202 0.19 nd nd nd nd nd nd nd nd nd nd nd

662203 4.45 nd nd nd nd nd nd 0.00 nd nd bdl nd

662204 0.97 nd nd nd nd nd nd nd nd nd nd nd

662205 0.40 nd nd nd nd nd nd nd nd nd nd nd

662206 7.18 nd nd nd nd nd nd nd nd nd nd nd

662207 2.42 nd nd nd nd nd nd nd nd nd nd nd

662208 1.78 nd nd nd nd nd nd nd nd nd nd nd

662209 0.30 nd nd nd nd nd nd nd nd nd nd nd

662210 6.82 nd nd nd nd nd nd nd nd nd nd nd

662211 0.54 nd nd nd nd nd nd nd nd nd nd nd

662212 0.34 nd nd nd nd nd nd nd nd nd nd nd

662213 0.40 nd nd nd nd nd nd nd nd nd nd nd

662214 3.45 nd nd nd nd nd nd nd nd nd nd nd

662215 1.30 nd nd nd nd nd nd 0.01 nd nd 0.01 nd

662216 0.56 nd nd nd nd nd nd nd nd nd nd nd

662217 0.26 nd nd nd nd nd nd nd nd nd nd nd

662218 0.58 nd nd nd nd nd nd 0.01 nd 0.01 nd nd

662219 2.19 nd nd nd nd nd nd nd nd nd nd nd

662220 1.02 nd nd nd nd nd nd nd nd nd nd nd

662221 0.66 nd nd nd nd nd nd nd nd nd nd nd

662222 0.60 0.72 nd 0.72 nd nd nd nd nd nd nd nd

662223 2.33 nd nd nd nd nd nd 0.65 0.63 0.02 nd nd

662224 0.67 nd nd nd nd nd nd nd nd nd nd nd

662225 0.59 0.00 nd nd nd bdl nd nd nd nd nd 0.03

662226 0.43 nd nd nd nd nd nd nd nd nd nd nd

662227 0.70 nd nd nd nd nd nd nd nd nd nd nd

662228 0.60 nd nd nd nd nd nd nd nd nd nd nd

662229 0.48 nd nd nd nd nd nd nd nd nd nd nd

662230 0.62 nd nd nd nd nd nd nd nd nd nd nd

662231 0.49 nd nd nd nd nd nd nd nd nd nd nd

662232 19.57 0.36 nd 0.36 nd nd nd 0.04 nd nd 0.04 nd

662233 2.32 nd nd nd nd nd nd nd nd nd nd nd

662234 7.12 nd nd nd nd nd nd nd nd nd nd nd

Trip Blanks

662236 nd nd nd nd nd nd nd nd nd nd nd nd

662237 bdl nd nd nd nd nd nd nd nd nd nd nd

662238 nd nd nd nd nd nd nd nd nd nd nd nd
36 Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011

Table 4. Mass of volatile organic compounds detected in soil-gas samplers deployed on July 18, 2011, collected from the 12th Street 

site, Fort Gordon, Georgia.—Continued.

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and xylenes; ---, not applicable; 

m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; DCE, dichloroethylene; MTBE, methyl tert-butyl ether; 

DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, perchloroethylene; DCB, dichlorobenzene; CCl4, carbon tetrachloride; nd, not 

detected; bdl, below detection level]

Sampler

Number

1,2,4-Trimethylbenzene

(μg)

1,3,5-Trimethylbenzene

(μg)

c,t-1,2-

DCE

(μg)

t-1,2-

DCE

(μg)

c-1,2-DCE

(μg)

Naphthalene

(μg)

2-MethylNaphthalene

(μg)

MTBE

(μg)

1,1-

DCA

(μg)

1,1,1-

TCA

(μg)

1,2-

DCA

(μg)

TCE 

(μg)

Octane

(μg)

MDL= 0.01 0.02 --- 0.05 0.02 0.01 0.01 0.03 0.02 0.01 0.01 0.02 0.02

662196 nd nd nd nd nd nd nd nd nd nd nd nd nd

662197 nd nd nd nd nd nd nd nd nd nd nd nd nd

662198 nd nd nd nd nd nd nd nd nd nd nd nd nd

662199 0.02 nd nd nd nd nd nd nd nd nd nd nd nd

662200 nd nd nd nd nd nd bdl nd nd nd nd nd nd

662201 nd nd nd nd nd nd nd nd nd nd nd nd nd

662202 nd nd nd nd nd nd nd nd nd nd nd nd nd

662203 nd nd nd nd nd nd nd nd nd nd nd nd nd

662204 nd nd nd nd nd nd nd nd nd nd nd nd nd

662205 nd nd nd nd nd nd nd nd nd nd nd nd nd

662206 nd nd nd nd nd nd nd nd nd nd nd nd nd

662207 nd nd nd nd nd nd nd nd nd nd nd nd nd

662208 nd nd nd nd nd nd nd nd nd nd nd nd nd

662209 nd nd nd nd nd nd nd nd nd nd nd nd nd

662210 nd nd nd nd nd nd nd nd nd nd nd nd nd

662211 nd nd nd nd nd nd nd nd nd nd nd nd nd

662212 nd nd nd nd nd nd nd nd nd nd nd nd nd

662213 nd nd nd nd nd nd nd nd nd nd nd nd nd

662214 nd nd nd nd nd nd nd nd nd nd nd nd nd

662215 nd nd nd nd nd nd nd nd nd nd nd nd nd

662216 nd nd nd nd nd nd nd nd nd nd nd nd nd

662217 nd nd nd nd nd nd nd nd nd nd nd nd nd

662218 nd nd nd nd nd nd nd nd nd nd nd nd nd

662219 nd nd nd nd nd nd bdl nd nd nd nd nd nd

662220 nd nd nd nd nd nd bdl nd nd nd nd nd nd

662221 nd nd nd nd nd nd nd nd nd nd nd nd nd

662222 nd nd nd nd nd nd nd nd nd nd nd nd nd

662223 nd nd nd nd nd nd nd nd nd nd nd nd nd

662224 nd nd nd nd nd nd nd nd nd nd nd nd bdl

662225 0.03 bdl nd nd nd nd nd nd nd nd nd nd nd

662226 nd nd nd nd nd nd nd nd nd nd nd nd nd

662227 nd nd nd nd nd nd nd nd nd nd nd nd nd

662228 nd nd nd nd nd nd nd nd nd nd nd nd nd

662229 nd nd nd nd nd nd nd nd nd nd nd nd nd

662230 nd nd nd nd nd nd nd nd nd nd nd nd nd

662231 nd nd nd nd nd nd nd nd nd nd nd nd nd

662232 nd nd nd nd nd nd nd nd nd nd nd 0.05 nd

662233 nd nd nd nd nd nd nd nd nd nd nd nd nd

662234 nd nd nd nd nd nd nd nd nd nd nd nd nd

Trip Blanks

662236 nd nd nd nd nd nd nd nd nd nd nd nd nd

662237 nd nd nd nd nd nd nd nd nd nd nd nd nd

662238 nd nd nd nd nd nd nd nd nd nd nd nd nd
Tables 37

Table 4. Mass of volatile organic compounds detected in soil-gas samplers deployed on July18, 2011, collected from 

the 12th Street site, Fort Gordon, Georgia—Continued.

[MDL, method detection level; TPH, total petroleum hydrocarbons; μg, micrograms; BTEX, benzene, toluene, ethylbenzene, and 

xylenes; ---, not applicable; m, meta; p, para; o, ortho; C11, C13, and C15, undecane, tridecane, and pentadecane; c, cis; t, trans; 

DCE, dichloroethylene; MTBE, methyl tert-butyl ether; DCA, dichloroethane; TCA, trichloroethane; TCE, trichloroethylene; PCE, 

perchloroethylene; DCB, dichlorobenzene; CCl4, carbon tetrachloride; nd, not detected; bdl, below detection level]

Sampler

Number

PCE 

(μg)

1-4-

DCB

(μg)

Chloroform

(μg)

CCl4

(μg)

1,1,2-

TCA

(μg)

Chlorobenzene

(μg)

1,1,1,2-Tetrachloroethane

(μg)

1,1,2,2-Tetrachloroethane

(μg)

1,3-Dichlorobenzene

(μg)

1,2-Dichlorobenzene

(μg)

MDL= 0.02 0.01 0.01 0.03 0.02 0.03 0.02 0.01 0.01 0.01

662196 nd nd nd nd nd nd nd nd nd nd

662197 nd nd nd nd nd nd nd nd nd nd

662198 nd nd 0.10 nd nd nd nd nd nd nd

662199 nd nd nd nd nd nd nd nd nd nd

662200 nd nd nd nd nd nd nd nd nd nd

662201 nd nd nd nd nd nd nd nd nd nd

662202 nd nd nd nd nd nd nd nd nd nd

662203 nd nd nd nd nd nd nd nd nd nd

662204 nd nd 0.10 nd nd nd nd nd nd nd

662205 bdl nd nd nd nd nd nd nd nd nd

662206 nd nd nd nd nd nd nd nd nd nd

662207 nd nd nd nd nd nd nd nd nd nd

662208 nd nd nd nd nd nd nd nd nd nd

662209 nd nd nd nd nd nd nd nd nd nd

662210 nd nd nd nd nd nd nd nd nd nd

662211 nd nd nd nd nd nd nd nd nd nd

662212 nd nd nd nd nd nd nd nd nd nd

662213 nd nd nd nd nd nd nd nd nd nd

662214 nd nd nd nd nd nd nd nd nd nd

662215 nd nd nd nd nd nd nd nd nd nd

662216 nd nd nd nd nd nd nd nd nd nd

662217 nd nd nd nd nd nd nd nd nd nd

662218 nd nd nd nd nd nd nd nd nd nd

662219 nd nd nd nd nd nd nd nd nd nd

662220 nd nd nd nd nd nd nd nd nd nd

662221 nd nd nd nd nd nd nd nd nd nd

662222 nd nd nd nd nd nd nd nd nd nd

662223 nd nd nd nd nd nd nd nd nd nd

662224 nd nd nd nd nd nd nd nd nd nd

662225 nd nd nd nd nd nd nd nd nd nd

662226 nd nd nd nd nd nd nd nd nd nd

662227 nd nd nd nd nd nd nd nd nd nd

662228 nd nd nd nd nd nd nd nd nd nd

662229 nd nd nd nd nd nd nd nd nd nd

662230 nd nd nd nd nd nd nd nd nd nd

662231 nd nd nd nd nd nd nd nd nd nd

662232 nd 0.05 nd nd nd nd nd nd nd nd

662233 nd nd nd nd nd nd nd nd nd nd

662234 nd nd 0.04 nd nd nd nd nd nd nd

Trip Blanks

662236 nd nd nd nd nd nd nd nd nd nd

662237 nd nd nd nd nd nd nd nd nd nd

662238 nd nd nd nd nd nd nd nd nd nd

Prepared by

U.S. Geological Survey

Science Publishing Network

Raleigh Publishing Service Center

3916 Sunset Ridge Road

Raleigh, NC 27607

This publication is available only online at

http://pubs.usgs.gov/of/2012/1082
Caldwell and others— Assessment of Soil-Gas Contamination at Three Former Fuel-Dispensing Sites, Fort Gordon, Georgia, 2010–2011—Open-File Report 2012–1082