U.S. Department of the Interior

U.S. Geological Survey

Open-File Report 2011–1067

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

Trace Element, Semivolatile Organic, and Chlorinated 

Organic Compound Concentrations in Bed Sediments 

of Selected Streams at Fort Gordon, Georgia, 

February–April 2010
Cover. Butler Creek tributary (Beaver Pond) at Fort Gordon, Georgia, February 2010 (Thomas A. Abrahamsen, U.S. Geological Survey).
Trace Element, Semivolatile Organic, and Chlorinated 

Organic Compound Concentrations in Bed Sediments 

of Selected Streams at Fort Gordon, Georgia, 

February–April 2010

By Lashun K. Thomas, Celeste A. Journey, Whitney J. Stringfield, Jimmy M. Clark, 

Paul M. Bradley, John B. Wellborn, W. Hagan Ratliff, and Thomas A. Abrahamsen

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 2011–1067

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: 2011

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reproduce any copyrighted materials contained within this report.

Suggested citation:

Thomas, L.K., Journey, C.A., Stringfield, W.J., Clark, J.M., Bradley, P.M., Wellborn, J.B., Ratliff, W.H., and 

Abrahamsen, T.A., 2011, Trace element, semivolatile organic, and chlorinated organic compound concentrations in 

bed sediments of selected streams at Fort Gordon, Georgia, February–April 2010: U.S. Geological Survey Open-File 

Report 2011–1067, 53 p.
iii

Contents

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

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

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

Previous Investigations........................................................................................................................2

Description of the Study Area ............................................................................................................7

Streamflow Station and Bed Sediment Numbering System..........................................................7

Data Collection and Analysis.......................................................................................................................7

Bed Sediment Data...............................................................................................................................7

Water-Quality Data.............................................................................................................................12

Data Analysis.......................................................................................................................................12

Quality Assurance...............................................................................................................................12

Bed Sediment Quality..................................................................................................................................16

Water-Quality Condition of Streams................................................................................................16

Major Ions, Trace Elements, and Total Organic Carbon Concentrations ..................................16

Semivolatile Organic Compounds, Organochlorine Pesticides, and Polychlorinated 

Biphenyl Concentrations......................................................................................................17

Quality-Control Data for Bed Sediment Samples ..........................................................................22

Major Ions, Trace Elements, and Total Organic Carbon Concentrations .........................22

Semivolatile Organic Compounds, Organochlorine Pesticides, and Polychlorinated 

Biphenyl Concentrations.............................................................................................22

Temporal Variation in Concentrations.............................................................................................22

Major Ions, Trace Elements, and Total Organic Carbon Concentrations .........................23

Semivolatile Organic Compound Concentrations ................................................................26

Summary........................................................................................................................................................28

Selected References...................................................................................................................................29

Figures

1–7. Maps showing—

1. Locations of study area and bed sediment sampling sites at Fort Gordon, GA, 

February–April 2010 ..........................................................................................................3

2. Relation among the number of bed sediment samples exceeding sedimentquality guidelines for selected major ions and trace elements in reference 

and nonreference bed sediment samples at Fort Gordon, GA, 

February–April 2010 ........................................................................................................18

3. Relation of lead concentrations to aquatic life criteria at sampling locations 

at Fort Gordon, GA, February–April 2010 .....................................................................19

4. Relation between number of detections of semivolatile organic compounds 

(SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls 

(PCBs) in nonreference and reference bed sediment samples at Fort Gordon, 

GA, February–April 2010.................................................................................................20

5. Relation of fluoranthene concentrations to aquatic life criteria at sampling 

locations at Fort Gordon, GA, February–April 2010....................................................21
iv

6. Percentage change in lead concentrations in bed sediment samples 

collected during May 1998 and February–April 2010 at Fort Gordon, GA..............25

7. Percentage change in the number of detections for semivolatile organic 

compounds (SVOCs) in bed sediment samples during May 1998 and 

February–April 2010 at Fort Gordon, GA......................................................................27

Tables

1. Site information for bed sediment samples collected at Fort Gordon, GA, 

February–April 2010......................................................................................................................4

2. Bed sediment-quality guidelines for selected major ions and trace elements..................5

3. Bed sediment-quality guidelines for selected semivolatile organic compounds 

(SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs)..........6

4. Summary of water-quality data collected for bed sediment samples at Fort Gordon, 

GA, February–April 2010 ..............................................................................................................8

5. Concentrations of major ions, selected trace elements, and total organic carbon 

in bed sediment samples collected at Fort Gordon, GA, February–April 2010 ...................9

6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine 

pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples 

collected at Fort Gordon, GA, February–April 2010...............................................................31

7. Concentrations of major ions, selected trace elements, and total organic carbon 

in quality-control bed sediment samples collected at Fort Gordon, GA, 

February–April 2010....................................................................................................................14

8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine 

pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed 

sediment samples collected at Fort Gordon, GA, February–April 2010 .............................42

9. Percentage change in the number of detections in bed sediment samples 

collected during May 1998 and February–April 2010 at Fort Gordon, GA .........................23

10. Percentage change in selected trace element concentrations in bed sediment 

samples collected during May 1998 and February–April 2010 at Fort Gordon, GA .........24
v

Conversion Factors

SI to Inch/Pound

Multiply By To obtain

Length

centimeter (cm) 0.3937 inch (in.)

millimeter (mm) 0.03937 inch (in.)

meter (m) 3.281 foot (ft) 

kilometer (km) 0.6214 mile (mi)

kilometer (km) 0.5400 mile, nautical (nmi) 

meter (m) 1.094 yard (yd) 

Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:

°F=(1.8×°C)+32

Vertical coordinate information is referenced to the North American Vertical Datum of 1988 

(NAVD 88).

Altitude is defined as the distance above the vertical datum.

Specific conductance is given in microsiemens per centimeter at 25 degrees Celsius (μS/cm at 

25 °C).

Selected acronyms and abbreviations used in this report include:

INRMP, Integrated Natural Resources Management Plan 

LEL, lowest effect level

LRL, laboratory reporting limit

LT-MDL, long-term method detection level

mg/kg, milligram per kilogram

mg/L, milligram per liter

μm, micrometer

μg/kg, microgram per kilogram

NAWQA, National Water-Quality Assessment Program

NWQL, National Water Quality Laboratory

OC, organochlorine pesticide

PAH, polycyclic aromatic hydrocarbon

PCB, polychlorinated biphenyl

PEC, probable effect concentration

PEL, probable effect level

PEL-HA28, probable effect level for Hyalella azteca

SPRL, Sediment Partitioning Research Laboratory

SVOC, semivolatile organic compound

TOC, total organic carbon 

USEPA, U.S. Environmental Protection Agency 

USGS, U.S. Geological Survey

Abstract

A spatial survey of streams was conducted from February 

to April 2010 to assess the concentrations of major ions, 

selected trace elements, semivolatile organic compounds, 

organochlorine pesticides, and polychlorinated biphenyls 

associated with the bed sediments of surface waters at 

Fort Gordon military installation near Augusta, Georgia. 

This investigation expanded a previous study conducted in 

May 1998 by 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, that evaluated the streambed sediment 

quality of selected surface waters at Fort Gordon. The data 

presented in this report are intended to help evaluate bed 

sediment quality in relation to guidelines for the protection of 

aquatic life, and identify temporal trends in trace elements and 

semivolatile organic compound concentrations at streambed 

sites previously sampled.

Concentrations of 34 major ions and trace elements 

and 102 semivolatile organic, organochlorine pesticide, and 

polychlorinated biphenyl compounds were determined in the 

fine-grained fraction of bed sediment samples collected from 

13 of the original 29 sites in the previous study, and 22 additional sites at Fort Gordon. Three of the sites were considered 

reference sites as they were presumed to be located away 

from potential sources of contaminants and were selected to 

represent surface waters flowing onto the fort, and the remaining 32 nonreference sites were presumed to be located within 

the contamination area at the fort. Temporal trends in trace elements and semivolatile organic compound concentrations also 

were evaluated at 13 of the 32 nonreference sites to provide an 

assessment of the variability in the number of detections and 

concentrations of constituents in bed sediment associated with 

potential sources, accumulation, and attenuation processes. 

Major ion and trace element concentrations in finegrained bed sediment samples from most nonreference sites 

exceeded concentrations in samples from reference sites at 

Fort Gordon. Bed sediments from one of the nonreference 

sites sampled contained the highest concentrations of copper 

and lead with elevated levels of zinc and chromium relative 

to reference sites. The percentage change of major ions, trace 

elements, and total organic carbon that had been detected 

at sites previously sampled in May 1998 and current bed 

sediment sites ranged from –4 to 8 percent with an average 

percentage change of less than 1 percent. Concentrations of 

major ions and trace elements in bed sediments exceeded 

probable effect levels for aquatic life (based on the amphipod 

Hyalella azteca) established by the U.S. Environmental 

Protection Agency at 46 and 69 percent of the current and 

previously sampled locations, respectively. The greatest 

frequency of exceedances for major ions and trace elements in 

bed sediments was observed for lead. 

Concentrations of semivolatile organic compounds, 

organochlorine pesticides, and polychlorinated biphenyls were 

detected in bed sediment samples at 94 percent of the sites 

currently sampled. Detections of these organic compounds 

were reported with greater frequency in bed sediments at 

upstream sampling locations, when compared to downstream 

locations. The greatest number of detections of these 

compounds was reported for bed sediment samples collected 

from two creeks above a lake. The percentage change of 

semivolatile organic compounds detected at previously 

sampled and current bed sediment sites ranged from –68 to 

100 percent with the greatest percentage increase reported for 

one of the creeks above the lake. 

Concentrations of semivolatile organic compounds and 

polychlorinated biphenyls in bed sediments exceeded aquatic 

life criteria established by the U.S. Environmental Protection 

Agency at three sites. Contaminant compounds exceeding 

aquatic life criteria included fluoranthene, phenanthrene, 

Trace Element, Semivolatile Organic, and Chlorinated 

Organic Compound Concentrations in Bed Sediments 

of Selected Streams at Fort Gordon, Georgia, 

February–April 2010

By Lashun K. Thomas1, Celeste A. Journey1, Whitney J. Stringfield1, Jimmy M. Clark1, Paul M. Bradley1, 

John B. Wellborn2

, W. Hagan Ratliff3, and Thomas A. Abrahamsen1

1

 U.S. Geological Survey, Columbia, South Carolina.

2

 Environmental and Natural Resources Division, Fort Gordon, Georgia.

3

 Environmental Branch, Fort Gordon, Georgia.
2 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

anthracene, benzo(a)anthracene, chrysene, benzo(a)pyrene, 

and pyrene. The most frequently detected organic compounds 

among bed sediment samples were pyrene, chrysene, and 

fluoranthene, which were detected in more than 45 percent of 

sites and reported at concentrations exceeding probable effect 

levels for the amphipod Hyalella azteca established by the 

U.S. Environmental Protection Agency.

Introduction

The U.S. Army uses stormwater-quality data to 

support the development of an Integrated Natural Resources 

Management Plan (INRMP) for stormwater pollution 

prevention for Fort Gordon, Georgia. An effective INRMP 

ensures that natural resource conservation measures and Army 

activities on the military base are integrated and consistent 

with Federal requirements (U.S. Code of Federal Regulations, 

1998) to manage military installations on an ecosystem 

basis. Information on the occurrence and distribution of toxic 

substances in surface-water bodies on the base is needed to 

develop an INRMP at Fort Gordon, because when transported 

from source areas and deposited in streams, these substances 

may adversely affect aquatic life and stream ecosystems.

During February–April 2010, the U.S. Geological Survey 

(USGS), 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, 

conducted a spatial survey of stream sediment quality to assess 

the concentrations of major ions, selected trace elements, 

semivolatile organic compounds (SVOCs), organochlorine 

pesticides (OCs), and polychlorinated biphenyls (PCBs) in 

streambed sediments at Fort Gordon. This study expanded a 

previous USGS investigation that evaluated the streambed 

sediment quality and characteristics of selected surface waters 

at Fort Gordon (McConnell and others, 2000). For this study, 

previously sampled streambed sediment sites were evaluated, 

and additional sites also were assessed to determine the 

occurrence and distribution of various constituents in bed 

sediments. The data were collected to provide a temporal 

comparison of concentrations of selected trace elements 

and SVOCs in bed sediments relative to previous studies 

(McConnell and others, 2000; Priest and others, 2002; fig. 1; 

table 1). 

 Trace elements, SVOCs, OCs, and PCBs generally have 

low solubility in natural waters and tend to accumulate on siltand clay-sized particles and organic matter (Smith and others, 

1988; Schwarzenbach and others, 1993; Stumm and Morgan, 

1996). The majority of the nonpoint-source contributions of 

these constituents likely are intermittent or related to storm 

events (McConnell and others, 2000). These contaminants 

may not be detected in randomly collected water samples, 

especially with respect to PCBs and OCs. Bed sediments in 

depositional environments of streams, however, provide an 

integrated repository of particulate matter transported by a 

stream over time. Potential effects of contaminants in the 

sediment on benthic organisms include both acute and chronic 

toxicity with individual-, population-, and community-level 

effects, bioaccumulation of contaminants, and the potential 

to pass contaminants along to predators of benthic species 

(Adams and others, 1992). Thus, a spatial survey of bed 

sediment quality can identify locations, potential source areas, 

and distributions of trace elements, SVOCs, OCs, and PCBs in 

surface water.

Purpose and Scope

The purpose of this report is to present data collected 

as part of an investigation on the occurrence and distribution 

of trace and major elements, SVOCs, OCs, and PCBs in bed 

sediments of selected streams at Fort Gordon, Georgia. This 

investigation expanded a previous USGS study conducted by 

McConnell and others (2000) that evaluated the streambed 

sediment quality in selected surface waters at the fort. The 

data presented in this report are intended to help evaluate 

the quality of streambed sediments in relation to guidelines 

for the protection of aquatic life (Persaud and others, 1993; 

U.S. Environmental Protection Agency, 1996; Canadian 

Council of Ministers of the Environment, 2001; tables 2, 3) 

and identify temporal trends in trace elements and SVOC 

concentrations at sites previously sampled (McConnell and 

others, 2000; Priest and others, 2002). The report contains 

concentration data for trace and major elements, SVOCs, OCs, 

and PCBs, and field water-quality properties for bed sediment 

samples for 13 of the original 29 sites in the previous USGS 

study (McConnell and others, 2000) and 22 additional sites at 

Fort Gordon for the period February–April 2010. Three of the 

sites were considered reference sites as they were presumed 

to be located away from potential sources of contaminants 

and were selected to represent surface waters flowing onto 

Fort Gordon, and the remaining 32 nonreference sites were 

presumed to be located within the contamination area at the 

fort.

Previous Investigations

In 1995, Fort Gordon was assessed as part of a 

comprehensive water-quality investigation conducted by 

the U.S. Department of Agriculture, Natural Resources 

Conservation Service, and the University of Georgia, 

Environmental and Agricultural Engineering Department. The 

assessment was conducted to evaluate water-quality conditions 

at six sites located at Fort Gordon and provided data for 

the development of a water-quality plan for Fort Gordon 

(U.S. Department of Agriculture, 1995). 

Following the water-quality assessment conducted at 

Fort Gordon in 1995, the USGS (McConnell and others, 

2000) evaluated the occurrence and distribution of trace 

elements and SVOCs in bed sediments from free-flowing 

and impounded segments of selected streams located at 
Introduction 3

Fort Gordon. Concentration data for trace elements and 

SVOCs in bed sediment samples were determined and used 

to evaluate the association between bed sediment quality and 

land use and to identify potential source areas of contaminants 

and sites where bed sediment quality can indicate an increased 

potential for adverse effects on aquatic life. Results from that 

study indicated a strong relation between trace element and 

SVOC concentrations in bed sediments and land use in the 

basins sampled. Relative rankings of the data indicated that 

the commercial and industrial areas were major sources for 

trace elements and semivolatile organic compounds. Results 

established that sediment-quality screening levels and aquatic 

life criteria also were exceeded at commercial and industrial 

land-use sites.

Brier Creek

Boggy Gut Creek

Headstall Creek

Butler Creek

Bath Branch

South Prong Creek

Rachel Branch

Marcum Branch

Spirit Creek

McCoys Creek

Sandy Run Creek

Richmond

McDuffie Columbia

Jefferson Burke

Fort Gordon Reservoir

Ellis Pond

Mirror Lake

Maxwell Lake

Signal Lake

Boardmans Pond

1

221

78

Ref- 2

Ref- 1

Ref- 3A

9

4 2 1

57

56

54

53

52

51

50

49

48

47

46

45

43

42

41

38 39

33 35

32

31 30

18

17

13

12

10

37

82°20'W 82°16'W 82°12'W 82°8'W

33°27'N

33°24'N

33°21'N

33°18'N

East Gulf

 Coastal Plain

Fort

 Gordon

Fall

Line

PIEDMONT

COASTAL PLAIN

BLUE RIDGE

VALLEY AND RIDGE

G e o r g i a

S o u t h C a r o l i n a

N o r t h C a r o l i n a

F l o r i d a

Base from ESRI® Data & Maps, 2008

Universal Transverse Mercator projection Zone 17

Augusta

0 2 4 1 KILOMETERS

0 1 2 4 MILES

EXPLANATION

Fort Gordon Boundary

Bed Sediment Site

 and Site Number

Reference Bed Sediment 

 Site and Site Number

Ref-1

17

Figure 1. Locations of study area and bed sediment sampling sites at Fort Gordon, GA, 

February–April 2010.
4 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Table 1. Site information for bed sediment samples collected at Fort Gordon, GA, February–April 2010.

[ °, degrees; ', minutes; ", seconds; EST, Eastern Standard Time]

Site 

number

(fig. 1)

Station number Station name Latitude Longitude Date Time

(EST)

1 02196843 Butler Creek tributary above Boardmans Pond at Fort Gordon, GA 33°25'15" 82°06'35" 3/17/10 1330

2 02196842 Soil Erosion Lake at Fort Gordon, GA 33°25'20" 82°07'13" 3/16/10 1330

4 02196823 Butler Creek tributary (Beaver Pond) at Fort Gordon, GA 33°25'44" 82°09'32" 2/3/10 1130

9 021970190 Gordon Lake at Fort Gordon, GA 33°22'26" 82°08'25" 3/17/10 0830

10 021970180 Mirror Lake at Fort Gordon, GA 33°23'27" 82°08'33" 3/17/10 1200

12 021970168 Spirit Creek tributary near headwaters at Fort Gordon, GA 33°24'41" 82°08'55" 2/17/10 1400

13 021970165 Spirit Creek above Gordon Lake at Fort Gordon, GA 33°22'51" 82°08'55" 2/3/10 1600

17 021970140 McCoy Creek above Signal Lake at Fort Gordon, GA 33°25'18" 82°10'07" 2/17/10 1415

18 021970136 Marcum Branch below Maxwell dam at Fort Gordon, GA 33°24'15" 82°10'59" 2/3/10 1400

30 021970130 North Fork Spirit Creek at Fort Gordon, GA 33°25'14" 82°11'18" 2/2/10 1500

31 332505082111300 BS-31 Fort Gordon, GA 33 82 2/2/10 1330

32 332436082111200 BS-32 Fort Gordon, GA 33°24'36" 82°11'12" 2/9/10 1415

33 021970158 McCoy Creek below Signal Lake at Fort Gordon, GA 33°23'56" 82°09'37" 2/3/10 1220

35 021970175 Spirit Creek tributary above Mirror Lake at Fort Gordon, GA 33°23'41" 82°08'34" 2/9/10 1230

37 332502082100200 BS-37 Fort Gordon, GA 33°25'02" 82°10'02" 2/9/10 1045

38 332552082091300 BS-38 Fort Gordon, GA 33°25'52" 82°09'13" 2/3/10 0930

39 02196825 Butler Creek tributary at Willard Trail at Fort Gordon, GA 33°25'55" 82°08'38" 2/3/10 1005

41 331840082164000 BS-41 Fort Gordon, GA 33°18'40" 82°16'40" 2/18/10 1245

42 331928082144000 BS-42 Fort Gordon, GA 33°19'28" 82°14'40" 2/10/10 1030

43 02197557 Brier Creek at U.S. Route 1 near Wrens, GA 33°16'38" 82°17'49" 3/16/10 1030

45 02197023 South Prong Creek above Ellis Pond at Fort Gordon, GA 33°21'39" 82°09'34" 2/10/10 0915

46 332116082145100 BS-46 Fort Gordon, GA 33°21'16" 82°14'51" 2/4/10 0925

47 332351082102700 BS-47 Fort Gordon, GA 33°23'51" 82°10'27" 2/3/10 1430

48 332446082094200 BS-48 Fort Gordon, GA 33°24'46" 82°09'42" 2/17/10 1115

49 331946082172000 BS-49 Fort Gordon, GA 33°19'46" 82°17'20" 2/18/10 1215

50 332038082183400 BS-50 Fort Gordon, GA 33°20'38" 82°18'34" 2/18/10 1000

51 331749082193600 BS-51 Fort Gordon, GA 33°17'49" 82°19'36" 2/18/10 1500

52 331709082195600 BS-52 Fort Gordon, GA 33°17'09" 82°19'56" 2/10/10 1500

53 331932082205000 BS-53 Fort Gordon, GA 33°19'32" 82°20'50" 2/18/10 1100

54 331754082151600 Sandy Run Creek at South Post Border, Fort Gordon, GA 33°17'54" 82°15'16" 4/13/10 1200

56 332208082103900 South Prong Creek below Range 14, Fort Gordon, GA 33°22'08" 82°10'39" 4/14/10 1200

57 332221082115700 Unnamed Creek East of Range 8, Fort Gordon, GA 33°22'21" 82°11'57" 4/14/10 0900

Ref- 1 02197554 Brier Creek at U.S. Route 221 near Wrens, GA 33°18'40" 82°22'33" 2/11/10 0900

Ref- 2 02197558 Boggy Gut Creek at U.S. Route 221 near Harlem, GA 33°22'46" 82°19'11" 2/11/10 1200

Ref- 3A 332321082152300 Ref-3A Fort Gordon, GA 33°23'21" 82°15'23" 2/4/10 0930
Introduction 5

Table 2. Bed sediment-quality guidelines for selected major ions and trace elements.

[mg/kg, milligrams per kilogram; %, percent by weight; ---, no guidelines; LEL, lowest effect level; SEL, severe effect level; TET, toxic effect threshold; PEL, 

probable effect level; PEL-HA28, probable effect level for Hyalella azteca (28-day test); PEC, probable effect concentration. Concentrations determined on dry 

weight of bed sediment samples. PEL-HA28 guidelines established by U.S. Environmental Protection Agency (1996) are highlighted in yellow]

Constituent

Bed sediment-quality guidelines

LEL1

(mg/kg)

SEL1

(mg/kg)

TET2

(mg/kg)

PEL3

(mg/kg)

4

PEL- HA28 

(mg/kg)

Consensus-based PEC5

(mg/kg)

Arsenic 6 33 17 17 48 33

Cadmium 0.6 10 3 3.5 3.2 4.98

Chromium 26 110 100 90 120 111

Cobalt *50 --- --- --- --- ---

Copper 16 110 86 197 100 149

Iron 2% 4% --- --- --- ---

Lead 31 250 170 91.3 82 128

Manganese 460 1,100 --- --- --- ---

Mercury 0.2 2 1 0.486 --- 1.06

Nickel 16 75 61 --- 33 48.6

Phosphorus (total) 600 2,000 --- --- --- ---

Silver *0.5 --- --- --- --- ---

Zinc 120 820 540 315 540 459

1 Persaud and others, 1993.

2 St. Lawrence Centre and Ministere de l’Envionnement du Quebec (1992).

3

 Canadian Council of Ministers of the Environment (1999, updated in 2001).

4 U.S. Environmental Protection Agency (1996, EPA 905/R-96/008).

5 Ingersol and others, 2000.

 *Ontario Ministry of the Environment (1997, appendix revised in 1998).
6 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Table 3. Bed sediment-quality guidelines for selected semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), 

and polychlorinated biphenyls (PCBs).

[μg/g, micrograms per gram; μg/kg, micrograms per kilogram; %, percent by weight;---, no guidelines; LEL, lowest effect level; SEL, severe effect level; 

TET, toxic effect threshold; PEL, probable effect level; PEL-HA28, probable effect level for Hyalella azteca (28-day test); PEC, probable effect concentration. Concentrations determined on dry weight of bed sediment samples. PEL-HA28 guidelines established by U.S. Environmental Protection Agency (1996) 

are highlighted in yellow]

Constituent

Bed sediment-quality guidelines

LEL1

(μg/g)

SEL1

(μg/g organic 

carbon)

TET2

(μg/kg)

PEL3

(μg/kg)

4

PEL-HA28 

(μg/kg)

Consensus-based PEC5

(μg/kg)

Acenaphthene --- --- --- 88.9 --- ---

Acenaphthylene --- --- --- 128 --- ---

Aldrin 0.002 8 --- --- --- ---

Anthracene 0.22 370 --- 245 170 845

AroclorTM 1254 --- --- --- 340 --- ---

Benzo(a)anthracene 0.32 1,480 500 385 280 1,050

Benzo(k)fluoranthene 0.24 1,340 --- --- --- ---

Benzo(g,h,i)perylene 0.17 320 --- --- --- ---

Benzo(a)pyrene 0.37 1,440 700 782 320 1,450

Chlordane 0.007 6 30 8.87 --- 17.6

Chrysene 0.34 460 800 862 410 1,290

Cyanide *0.1 --- --- --- --- ---

DDD (p,p- and o,p-) 0.008 6 60 8.51 --- 28

DDE (p,p- and o,p-) 0.005 19 50 6.75 --- 31.3

DDT (p,p- and o,p-) 0.008 71 50 4.77 --- 62.9

Total DDTs 0.007 12 --- --- --- 572

Dibenzo(a,h)anthracene 0.06 130 --- 135 --- ---

Dieldrin 0.002 91 300 6.67 --- 61.8

Endrin 0.003 130 500 62.4 --- 207

Fluoranthene 0.75 1,020 2,000 2,355 320 2,230

Fluorene 0.19 160 --- 144 150 536

Heptachlor epoxide 0.005 5 30 2.74 --- 16

Hexachlorobenzene 0.02 24 --- --- --- ---

Indeno(1,2,3-c,d) pyrene 0.2 320 --- --- --- ---

Lindane (BHC) 0.003 12 9 1.38 --- 4.99

Methylnaphthalene, 2- --- --- --- 201 --- ---

Mirex 0.007 130 --- --- --- ---

Naphthalene --- --- 600 391 140 561

Phenanthrene 0.56 950 800 515 410 1,170

Pyrene 0.49 850 1,000 875 490 1,520

Total PAHs 4 10,000 --- --- 3,400 22,800

Total PCBs 0.07 530 1,000 277 240 676

1 Persaud and others, 1993.

2 St. Lawrence Centre and Ministere de l’Envionnement du Quebec (1992).

3

 Canadian Council of Ministers of the Environment (1999, updated in 2001).

4 U.S. Environmental Protection Agency (1996, EPA 905/R-96/008).

5 Ingersol and others, 2000.

*Ontario Ministry of the Environment (1997, appendix revised in 1998).
Data Collection and Analysis 7

More recent studies also have been conducted at Fort 

Gordon to assess water-quality and bed sediment conditions. A 

second study conducted by the USGS (Priest and others, 2002) 

identified and evaluated major ions, selected trace elements, 

and nutrients in surface water, streambed-interstitial water, and 

bed sediments collected within the small arms impact area at 

Fort Gordon. Concentration data were reported for eight sites 

along South Prong Creek and Marcum Branch for the period 

September 4–6, 2001.

Description of the Study Area

Fort Gordon is located in east-central Georgia approximately 13 kilometers southwest of Augusta in Richmond, 

Columbia, Jefferson, and McDuffie Counties (fig. 1). Fort 

Gordon lies in the northern part of the Coastal Plain Physiographic Province in Georgia, near the Fall Line (Clark and 

Zisa, 1976). The Fall Line marks a transitional zone between 

the Coastal Plain and Piedmont Physiographic Provinces 

(fig. 1). The general topography of the Fall Line is characterized by rolling hills, with some rock outcroppings in stream 

valleys. Topographic relief in the Coastal Plain generally is 

greatest near the Fall Line and decreases in a southeasterly 

direction. The minimum altitude is approximately 69 meters 

(m) above the North American Vertical Datum of 1988 

(NAVD 88) to the east, and the maximum altitude is about 

145 m above NAVD 88 to the northwest.

The climate of the Augusta area is humid subtropical, 

characterized by hot summers and mild winters. The average 

daily high temperature is about 32 degrees Celsius (°C) in 

the summer, and the daily average low temperature is about 

2 °C in the winter. In 2009, the total precipitation recorded at 

Augusta Bush Field Airport was 1.28 m (National Oceanic 

and Atmospheric Administration, 2010). The driest months 

were reported for January and August, and the wettest months 

were reported for October and December. On the basis of 

the 30-year period, 1971–2000, average precipitation in the 

Augusta area is about 1.13 m, and snowfall is rare (National 

Oceanic and Atmospheric Administration, 2010). 

Past military activities at Fort Gordon have included division training for Infantry and Armored Divisions, Southeastern Signal School, Military Police, and anti-aircraft Artillery 

Brigade operations. After the Vietnam War, the U.S. Army 

consolidated the majority of the communications training 

at Fort Gordon. In 1974, Fort Gordon was designated as the 

U.S. Army Signal Center. Currently, Fort Gordon is one of the 

largest communications/electronics facilities in the world.

General land use in the western part of the fort consists 

of upland areas that typically are forested and contain wetlands and some small impoundments. The eastern part of Fort 

Gordon is more developed, with industrial and military-related 

operation facilities. The largest areas of impervious surfaces 

at Fort Gordon are located in the eastern part of the fort and 

include the headwaters of Butler and Spirit Creeks. Bed 

sediment sites evaluated for this investigation were located 

throughout the fort. 

Streamflow Station and Bed Sediment 

Numbering System

The USGS has used the same numbering system to 

identify streamflow stations since 1950. The order of listing 

stations is in a downstream direction along the mainstream. 

All stations on a tributary entering upstream from a mainstream station are listed before that station. Each streamflow 

station is assigned a unique 8- to 14-digit number. The station 

number, such as 02197500, includes the 2-digit number “02,” 

which refers to the regional basin identifier, plus the 6- to 

12-digit downstream order “1975000.” Bed sediment sites 

without a USGS-assigned number are identified by the unique 

15-digit number derived from the site’s latitude, longitude, 

and a sequential number. For example, two different types of 

samples collected from one site with latitude 33°22'10" and 

longitude –082°10'39" would be assigned identification numbers 332210082103901 and 332210082103902, respectively.

Data Collection and Analysis

The following sections describe methods that were used to 

collect and evaluate bed sediment samples for trace and major 

elements, SVOCs, PCBs, OCs, and field water-quality properties (tables 4–6; table 6 is on p. 31 at the back of the report). A 

discussion on quality-assurance procedures also is provided.

Bed Sediment Data

Bed sediment samples were collected at 32 nonreference 

sites and 3 reference sites (fig. 1) in exposed and (or) submerged 

depositional areas that contain fine-grained sediments. Samples 

at stream sites were collected in accordance with the procedures 

outlined in chapter A-8 of the USGS National Field Manual 

(Radtke, 2005; U.S. Geological Survey, variously dated). 

Samples were collected along a 100-m reach at each of the 

selected stream sites by using a TeflonTM spatula to scoop the 

upper 1–2 centimeters (cm) of fine-grained material from the 

bed deposits. Samples were composited in an acid-rinsed, 

baked-glass container until sufficient material was collected to 

process the sample.

Composite subsamples for each site were delivered to the 

USGS Sediment Partitioning Research Laboratory (SPRL) in 

Atlanta, Georgia. Samples were prepared for chemical analysis 

at the USGS SPRL by freeze drying and then sieving through 

a 63-micrometer (μm) mesh screen. The 63-μm fraction of the 

sample was analyzed for selected trace and major elements 

by wet digestion and atomic absorption spectroscopy (method 

PLA20 in Horowitz and Elrick, 1985a); for the hydrides of 

antimony, arsenic, and selenium by wet digestion and hydride 

atomic absorption (method HY017 in Horowitz and Elrick, 

1985b); and for mercury by wet digestion and flameless 

cold vapor atomic absorption (method CV025 in Elrick and 

Horowitz, 1986). 
8 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Table 4. Summary of water-quality data collected for bed sediment samples at Fort Gordon, GA, February–April 2010. [EST, Eastern Standard Time; °C, degrees Celsius; μS/cm, microsiemens per centimeter at 25 degrees Celsius; mm Hg, millimeters of mercury; mg/L, milligrams per liter; %, percent; ---, no data] Site number (fig. 1) Station number Station name Date Time (EST) Water temper- ature °C pH, stan- dard units Spe- cific con- duc- tance, μS/cm Baro- metric pres- sure, mm Hg Dis- solved oxygen, mg/L Dissolved oxygen satura- tion,

%

1 02196843 Butler Creek tributary above Boardmans Pond at Fort Gordon, GA 3/17/10 1330 14.5 5.88 28.0 755 9.09 90.0

2 02196842 Soil Erosion Lake at Fort Gordon, GA 3/16/10 1330 14.5 6.13 34.0 753 10.4 103

4 02196823 Butler Creek tributary (Beaver Pond) at Fort Gordon, GA 2/3/10 1130 7.65 5.61 33.0 755 7.89 66.6

9 021970190 Gordon Lake at Fort Gordon, GA 3/17/10 0830 13.7 5.58 52.0 756 7.23 70.2

10 021970180 Mirror Lake at Fort Gordon, GA 3/17/10 1200 12.7 5.32 13.0 756 8.14 77.4

12 021970168 Spirit Creek tributary near headwaters at Fort Gordon, GA 2/17/10 1400 5.32 6.64 67.0 748 6.99 56.2

13 021970165 Spirit Creek above Gordon Lake at Fort Gordon, GA 2/3/10 1600 9.66 6.43 54.0 758 10.3 90.9

17 021970140 McCoy Creek above Signal Lake at Fort Gordon, GA 2/17/10 1415 11.8 5.16 23.0 755 10.0 93.5

18 021970136 Marcum Branch below Maxwell dam at Fort Gordon, GA 2/3/10 1400 10.4 5.10 16.0 757 10.7 96.5

30 021970130 North Fork Spirit Creek at Fort Gordon, GA 2/2/10 1500 9.91 4.99 29.0 750 11.1 99.5

31 332505082111300 BS-31 Fort Gordon, GA 2/2/10 1330 10.0 3.86 23.0 751 11.3 102

32 332436082111200 BS-32 Fort Gordon, GA 2/9/10 1415 11.0 4.95 21.0 748 9.45 87.4

33 021970158 McCoy Creek below Signal Lake at Fort Gordon, GA 2/3/10 1220 10.0 7.39 24.0 764 9.90 87.4

35 021970175 Spirit Creek tributary above Mirror Lake at Fort Gordon, GA 2/9/10 1230 8.86 5.59 29.0 752 10.3 90.3

37 332502082100200 BS-37 Fort Gordon, GA 2/9/10 1045 13.0 4.65 26.0 752 8.51 81.8

38 332552082091300 BS-38 Fort Gordon, GA 2/3/10 0930 8.39 5.01 51.0 756 10.3 88.6

39 02196825 Butler Creek tributary at Willard Trail at Fort Gordon, GA 2/3/10 1005 7.75 6.78 33.0 759 9.16 77.2

41 331840082164000 BS-41 Fort Gordon, GA 2/18/10 1245 6.38 4.28 22.0 754 11.0 89.8

42 331928082144000 BS-42 Fort Gordon, GA 2/10/10 1030 7.98 5.14 18.0 753 10.2 87.4

43 02197557 Brier Creek at U.S. Route 1 near Wrens, GA 3/16/10 1030 11.3 5.59 55.0 756 10.0 92.1

45 02197023 South Prong Creek above Ellis Pond at Fort Gordon, GA 2/10/10 0915 6.42 4.20 17.0 754 10.1 82.5

46 332116082145100 BS-46 Fort Gordon, GA 2/4/10 0925 7.73 5.44 20.0 766 10.6 88.1

47 332351082102700 BS-47 Fort Gordon, GA 2/3/10 1430 8.95 4.81 21.0 764 11.3 97.3

48 332446082094200 BS-48 Fort Gordon, GA 2/17/10 1115 8.52 4.27 33.0 752 10.9 94.5

49 331946082172000 BS-49 Fort Gordon, GA 2/18/10 1215 5.30 4.00 23.0 761 --- ---

50 332038082183400 BS-50 Fort Gordon, GA 2/18/10 1000 3.86 3.90 24.0 761 14.2 108

51 331749082193600 BS-51 Fort Gordon, GA 2/18/10 1500 7.01 6.19 48.0 754 12.2 101

52 331709082195600 BS-52 Fort Gordon, GA 2/10/10 1500 7.94 4.10 20.0 751 9.77 83.5

53 331932082205000 BS-53 Fort Gordon, GA 2/18/10 1100 7.78 3.36 21.0 755 7.69 65.2

54 331754082151600 Sandy Run Creek at South Post Border, Fort Gordon, GA 4/13/10 1200 18.4 4.95 16.0 765 9.43 100

56 332208082103900 South Prong Creek below Range 14, Fort Gordon, GA 4/14/10 1200 16.6 4.17 13.0 764 9.46 96.8

57 332221082115700 Unnamed Creek East of Range 8, Fort Gordon, GA 4/14/10 0900 16.1 4.01 18.0 765 7.88 79.6

Ref- 1 02197554 Brier Creek at U.S. Route 221 near Wrens, GA 2/11/10 0900 4.71 5.97 50.0 755 10.9 85.7

Ref- 2 02197558 Boggy Gut Creek at U.S. Route 221 near Harlem, GA 2/11/10 1200 4.92 4.86 31.0 752 10.2 81.0

Ref- 3A 332321082152300 Ref-3A Fort Gordon, GA 2/4/10 0930 6.60 4.72 23.0 759 9.21 75.3
Data Collection and Analysis 

9

Table 5. Concentrations of major ions, selected trace elements, and total organic carbon in bed sediment samples collected at Fort Gordon, GA, February–April 2010.[EST, Eastern Standard Time; <63 μm, less than 63 micrometers; mg/kg, milligrams per kilogram; %, percent (1% = 10,000 mg/kg); <, less than; ---, no data. Concentrations determined on the less than 63-micrometer (μm) fraction of bed sediment samples]

Site 

number

(fig. 1)

Station number Station name Date Time (EST) <63 μm % Silver (mg/kg) Copper (mg/kg) Lead (mg/kg) Zinc (mg/kg)

1 02196843 Butler Creek tributary above Boardmans Pond at Fort Gordon, GA 3/17/10 1330 36 <0.5 31 75 170

2 02196842 Soil Erosion Lake at Fort Gordon, GA 3/16/10 1330 87 <0.5 46 90 260

4 02196823 Butler Creek tributary (Beaver Pond) at Fort Gordon, GA 2/3/10 1130 5.0 <0.5 41 240 170

9 021970190 Gordon Lake at Fort Gordon, GA 3/17/10 0830 34 2.4 44 71 160

10 021970180 Mirror Lake at Fort Gordon, GA 3/17/10 1200 46 <0.5 24 76 91

12 021970168 Spirit Creek tributary near headwaters at Fort Gordon, GA 2/17/10 1400 1.0 <0.5 69 120 450

13 021970165 Spirit Creek above Gordon Lake at Fort Gordon, GA 2/3/10 1600 13 3.1 41 76 120

17 021970140 McCoy Creek above Signal Lake at Fort Gordon, GA 2/17/10 1415 1.0 <0.5 27 98 120

18 021970136 Marcum Branch below Maxwell dam at Fort Gordon, GA 2/3/10 1400 11 <0.5 110 280 170

30 021970130 North Fork Spirit Creek at Fort Gordon, GA 2/2/10 1500 1.0 <0.5 41 140 110

31 332505082111300 BS-31 Fort Gordon, GA 2/2/10 1330 1.0 <0.5 27 65 74

32 332436082111200 BS-32 Fort Gordon, GA 2/9/10 1415 0.5 <0.5 28 72 82

33 021970158 McCoy Creek below Signal Lake at Fort Gordon, GA 2/3/10 1220 6.0 0.8 22 57 77

35 021970175 Spirit Creek tributary above Mirror Lake at Fort Gordon, GA 2/9/10 1230 1.0 <0.5 24 61 130

37 332502082100200 BS-37 Fort Gordon, GA 2/9/10 1045 2.0 <0.5 51 170 120

38 332552082091300 BS-38 Fort Gordon, GA 2/3/10 0930 6.0 <0.5 19 53 53

39 02196825 Butler Creek tributary at Willard Trail at Fort Gordon, GA 2/3/10 1005 4.0 <0.5 33 89 110

41 331840082164000 BS-41 Fort Gordon, GA 2/18/10 1245 36 <0.5 24 44 40

42 331928082144000 BS-42 Fort Gordon, GA 2/10/10 1030 2.0 <0.5 24 61 66

43 02197557 Brier Creek at U.S. Route 1 near Wrens, GA 3/16/10 1030 65 <0.5 16 43 82

45 02197023 South Prong Creek above Ellis Pond at Fort Gordon, GA 2/10/10 0915 2.0 <0.5 23 56 45

46 332116082145100 BS-46 Fort Gordon, GA 2/4/10 0925 2.0 <0.5 20 49 82

47 332351082102700 BS-47 Fort Gordon, GA 2/3/10 1430 2.0 <0.5 45 130 54

48 332446082094200 BS-48 Fort Gordon, GA 2/17/10 1115 32 <0.5 44 84 150

49 331946082172000 BS-49 Fort Gordon, GA 2/18/10 1215 1.0 <0.5 21 37 41

50 332038082183400 BS-50 Fort Gordon, GA 2/18/10 1000 1.0 <0.5 20 37 48

51 331749082193600 BS-51 Fort Gordon, GA 2/18/10 1500 45 <0.5 15 38 65

52 331709082195600 BS-52 Fort Gordon, GA 2/10/10 1500 2.0 <0.5 25 48 89

53 331932082205000 BS-53 Fort Gordon, GA 2/18/10 1100 19 <0.5 15 39 23

54 331754082151600 Sandy Run Creek at South Post Border, Fort Gordon, GA 4/13/10 1200 15 <0.5 20 37 61

56 332208082103900 South Prong Creek below Range 14, Fort Gordon, GA 4/14/10 1200 18 <0.5 37 100 30

57 332221082115700 Unnamed Creek East of Range 8, Fort Gordon, GA 4/14/10 0900 34 0.5 56 120 40

Ref- 1 02197554 Brier Creek at U.S. Route 221 near Wrens, GA 2/11/10 0900 8.0 <0.5 19 45 96

Ref- 2 02197558 Boggy Gut Creek at U.S. Route 221 near Harlem, GA 2/11/10 1200 51 <0.5 19 46 59

Ref- 3A 332321082152300 Ref-3A Fort Gordon, GA 2/4/10 0930 51 <0.5 18 32 69
10 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Table 5. Concentrations of major ions, selected trace elements, and total organic carbon in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued [EST, Eastern Standard Time; <63 μm, less than 63 micrometers; mg/kg, milligrams per kilogram; %, percent (1% = 10,000 mg/kg); <, less than; ---, no data. Concentrations determined on the less than 63-micrometer (μm) fraction of bed sediment samples] Site number (fig. 1) Date Cadmium (mg/kg) Chro- mium (mg/kg) Cobalt (mg/kg) Nickel (mg/kg) Barium (mg/kg) Vana- dium (mg/kg) Lithium (mg/kg) Beryl- lium (mg/kg) Molyb- denum (mg/kg) Phos- phorus (mg/kg) Strontium (mg/kg) Arsenic (mg/kg) Anti- mony (mg/kg) Sele- nium (mg/kg) Tin (mg/kg)

1 3/17/10 0.7 100 12 23 610 120 30 3.2 2.0 1,400 150 12 1.6 2.7 2.9

2 3/16/10 0.8 130 19 40 850 140 38 3.6 2.2 1,700 210 10 1.8 3.0 3.4

4 2/3/10 1.3 120 5.3 24 390 140 31 1.9 2.4 1,100 110 9.0 5.9 1.6 6.3

9 3/17/10 0.6 94 5.2 20 550 100 32 2.1 2.8 4,000 110 5.8 1.2 1.3 5.2

10 3/17/10 0.1 120 6.3 25 720 160 37 2.5 2.3 1,200 150 11 1.1 0.7 4.1

12 2/17/10 0.9 100 7.2 28 400 140 37 1.9 2.7 1,500 130 11 3.8 1.1 7.9

13 2/3/10 0.4 110 5.7 18 480 110 31 2.2 2.6 3,000 100 6.8 1.6 1.5 10

17 2/17/10 0.3 120 6.4 23 410 160 30 2.3 3.3 1,100 130 19 1.6 2.2 3.3

18 2/3/10 0.5 120 5.0 20 410 140 31 2.2 3.2 1,000 110 11 4.7 1.8 5.1

30 2/2/10 0.7 140 6.8 22 540 180 26 2.3 5.4 1,400 150 17 2.7 2.3 7.2

31 2/2/10 0.1 210 5.8 52 530 160 30 2.1 5.0 1,000 120 11 1.3 1.3 6.0

32 2/9/10 0.1 100 4.4 18 460 140 29 2.0 2.7 940 96 15 1.6 1.7 2.8

33 2/3/10 0.1 110 5.0 18 410 120 32 1.8 1.9 810 94 8.2 1.5 0.7 3.7

35 2/9/10 0.1 99 5.0 20 530 120 30 2.0 1.6 1,200 130 15 1.5 0.9 4.0

37 2/9/10 0.3 140 6.5 23 600 160 29 2.8 3.1 1,400 190 17 2.7 3.3 4.7

38 2/3/10 0.4 87 5.3 18 260 120 33 2.0 1.8 670 69 5.4 0.6 2.0 2.9

39 2/3/10 0.3 110 7.7 19 240 140 32 2.4 2.1 690 88 6.1 2.5 1.7 4.0

41 2/18/10 0.1 69 4.5 15 330 78 27 2.4 1.4 840 89 2.8 0.6 2.2 2.8

42 2/10/10 0.1 110 11 19 350 130 27 2.0 2.0 880 120 12 1.0 1.5 4.9

43 3/16/10 0.2 60 23 17 500 110 38 2.8 1.9 1,100 73 4.0 0.6 0.9 2.9

45 2/10/10 <0.1 94 3.6 19 360 130 25 1.8 1.7 880 150 8.5 1.1 1.8 3.1

46 2/4/10 0.1 87 29 24 450 110 37 2.7 1.5 1,300 130 10 0.9 2.0 4.8

47 2/3/10 0.1 100 4.4 16 440 140 28 1.8 2.5 1,100 120 11 3.2 2.4 4.2

48 2/17/10 0.6 130 8.2 22 610 150 30 2.3 2.7 1,200 160 12 4.5 1.6 4.0

49 2/18/10 0.1 70 4.5 14 300 86 28 2.2 1.4 730 85 4.0 0.7 1.7 2.6

50 2/18/10 <0.1 76 6.6 18 280 94 36 2.6 1.8 840 83 4.7 0.8 2.0 3.1

51 2/18/10 0.1 52 18 14 490 100 36 2.5 1.9 1,000 74 3.8 0.6 0.8 3.2

52 2/10/10 <0.1 68 5.1 22 570 85 38 1.8 1.0 1,100 100 4.3 0.8 1.0 2.4

53 2/18/10 <0.1 47 2.0 9 240 34 10 1.9 <1 1,200 74 2.4 0.4 5.0 <1.0

54 4/13/10 0.7 75 31 21 370 89 27 2.4 1.6 1,000 100 7.5 0.8 2.1 4.4

56 4/14/10 0.1 66 2.4 11 280 85 16 1.3 1.2 860 110 4 0.6 3 2.2

57 4/14/10 <0.1 82 3.2 14 290 110 26 1.4 1.7 920 110 6.8 0.8 1.8 3.2

Ref- 1 2/11/10 0.2 53 28 15 640 120 35 3.0 2.0 1,300 95 5.3 0.6 0.9 3.8

Ref- 2 2/11/10 0.1 100 7.1 24 460 140 64 4.2 1.9 970 130 4.3 0.7 2.4 3.3

Ref- 3A 2/4/10 0.2 80 20 24 300 100 38 2.6 1.5 810 68 15 0.7 2.2 2.1
Data Collection and Analysis 11

Table 5. Concentrations of major ions, selected trace elements, and total organic carbon in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[EST, Eastern Standard Time; <63 μm, less than 63 micrometers; mg/kg, milligrams per kilogram; %, percent (1% = 10,000 mg/kg); <, less than; ---, no data. Concentrations determined on the less than 63-micrometer (μm) fraction of bed sediment samples]

Site 

number

(fig. 1)

Date Mercury (mg/kg) Thallium (mg/kg) Uranium (mg/kg) Manga- nese (mg/kg) Iron % Alumi- num % Tita- nium % Calcium % Potas- sium % Magne- sium % Sodium % Total Carbon % Total Nitrogen % Total Sulfur % Total Organ- ic Carbon %

1 3/17/10 0.3 <50 <50 530 4.9 9.9 0.6 0.1 0.5 0.2 0.1 9.7 0.7 0.1 9.62 3/16/10 0.4 <50 <50 320 3.5 11 0.7 0.1 0.5 0.2 0.1 5.3 0.4 0.1 5.34 2/3/10 0.2 <50 <50 130 2.7 11 0.8 0.1 0.5 0.2 0.2 6.8 0.3 0.1 6.99 3/17/10 0.2 <50 <50 170 2.5 9.7 0.9 0.2 0.6 0.2 0.1 7.7 0.5 0.1 7.6

10 3/17/10 0.1 <50 <50 210 3.6 14 0.8 0.1 0.8 0.2 0.1 3.8 0.2 0.0 3.8

12 2/17/10 0.1 <50 <50 470 3.4 8.4 0.7 0.6 0.9 0.3 0.3 8.0 0.5 0.2 2.513 2/3/10 0.4 <50 <50 210 2.8 11 0.9 0.1 0.6 0.2 0.1 6.0 0.4 0.1 5.917 2/17/10 0.2 <50 <50 320 8.2 12 0.6 0.1 0.5 0.2 0.1 6.1 0.5 0.1 5.918 2/3/10 0.2 <50 <50 95 4.9 11 0.9 0.1 0.5 0.1 0.1 7.7 0.6 0.1 7.230 2/2/10 0.3 <50 <50 190 7.6 9.5 1.6 0.2 0.5 0.2 0.2 7.9 0.5 0.1 7.631 2/2/10 0.3 <50 <50 200 3.8 11 1.1 0.1 0.6 0.2 0.1 3.2 0.2 0.0 3.232 2/9/10 0.2 <50 <50 190 6.1 9.6 0.8 0.1 0.6 0.2 0.1 4.3 0.2 0.1 4.033 2/3/10 0.2 <50 <50 240 2.7 9.9 1.0 0.1 0.5 0.1 0.1 2.0 0.1 0.0 1.9

35 2/9/10 0.1 <50 <50 240 6.0 9.3 0.7 0.1 0.5 0.2 0.1 5.0 0.3 0.1 4.837 2/9/10 0.9 <50 <50 160 6.3 11 0.8 0.1 0.5 0.2 0.2 5.0 0.3 0.1 4.938 2/3/10 0.1 <50 <50 110 2.7 11 0.7 0.1 0.7 0.1 0.1 8.7 0.5 0.1 8.7

39 2/3/10 0.1 <50 <50 220 4.0 14 0.6 0.1 0.7 0.1 0.1 5.5 0.3 0.1 5.4

41 2/18/10 0.3 <50 <50 93 2.0 7.6 0.7 0.0 0.4 0.1 0.1 16 1.0 0.2 1542 2/10/10 0.1 <50 <50 460 7.4 8.9 0.9 0.0 0.3 0.1 0.1 5.6 0.4 0.1 5.543 3/16/10 0.1 <50 <50 1,500 2.2 9.8 0.9 0.1 1.2 0.2 0.2 6.2 0.4 0.1 5.445 2/10/10 0.1 <50 <50 92 4.4 9.8 0.8 0.0 0.4 0.1 0.1 8.0 0.5 0.1 7.9

46 2/4/10 0.1 <50 <50 960 5.6 8.8 0.8 0.1 0.4 0.2 0.1 9.3 0.7 0.1 8.847 2/3/10 0.2 <50 <50 92 4.8 10 0.8 0.0 0.5 0.1 0.1 11 0.7 0.1 10

48 2/17/10 0.3 <50 <50 250 4.9 9.7 0.8 0.2 0.6 0.2 0.2 6.1 0.4 0.1 6.049 2/18/10 0.2 <50 <50 130 2.5 7.2 0.8 0.0 0.4 0.1 0.1 9.8 0.7 0.1 8.650 2/18/10 0.2 <50 <50 110 2.7 8.3 0.7 0.0 0.4 0.1 0.1 9.8 0.7 0.2 9.5

51 2/18/10 0.1 <50 <50 990 2.0 9.5 0.9 0.1 1.3 0.2 0.2 4.4 0.4 0.1 4.452 2/10/10 0.1 <50 <50 210 1.7 7.3 0.8 0.1 0.8 0.3 0.1 11 0.6 0.1 9.4

53 2/18/10 0.2 <50 <50 60 1.0 4.7 0.3 0.1 0.2 0.1 0.1 27 1.7 0.2 26

54 4/13/10 0.2 <50 <50 820 4.8 7.2 0.9 0.1 0.4 0.1 <0.1 11 0.8 0.1 9.956 4/14/10 0.1 <50 <50 85 3.4 5.9 0.6 0.1 0.3 0.1 <0.1 18 1.0 0.2 1757 4/14/10 0.2 <50 <50 87 3.5 8.4 0.7 0.0 0.3 0.1 <0.1 14 0.9 0.2 14

Ref- 1 2/11/10 0.1 <50 <50 1,600 2.9 9.7 0.9 0.2 1.7 0.2 0.3 2.5 0.2 0.1 2.5

Ref- 2 2/11/10 0.1 <50 <50 75 2.0 11 0.8 0.0 0.6 0.2 0.1 6.5 0.5 0.1 6.4Ref- 3A 2/4/10 0.1 <50 <50 310 8.0 8.6 0.6 0.1 0.3 0.1 0.0 12 1.0 0.2 12
12 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Aliquot parts from the prepared subsamples were 

analyzed at the USGS SPRL for total organic carbon (TOC) 

by acidification with 10-percent hydrochloric acid followed 

by infrared detection on combustion in an oxygen atmosphere 

(K.A. Elrick, U.S. Geological Survey, written commun., 

November 2009). Samples were analyzed for total carbon 

and nitrogen through combustion in an oxygen atmosphere, 

chromatographic column separation, and measurement of 

thermal conductivity (K.A. Elrick, U.S. Geological Survey, 

written commun., November 2009). 

Additional subsamples for the analysis of SVOCs, OCs, 

and PCBs were delivered to the USGS National Water Quality 

Laboratory (NWQL) in Denver, Colorado. Samples were 

sieved though a 2-millimeter filter, and the sieved fraction 

was analyzed for SVOCs by gas chromatography/mass 

spectrometry (Furlong and others, 1996; Olson and others, 

2004) and for OCs and four congeners of PCBs (AroclorTM 

1016, 1242, 1254, and 1260) by gas chromatography with 

electron capture detection (Noriega and others, 2004). 

Water-Quality Data 

Field water-quality properties, such as water temperature, 

pH, dissolved-oxygen concentration, and specific conductance, 

were measured in the stream at the time of sampling, using 

a calibrated multiprobe sonde and following standard USGS 

protocols (Wilde and Radtke, 1999). Specific conductance 

and pH measurements were made after the sonde was field 

calibrated with standard solutions. The dissolved-oxygen 

probe was calibrated in water-saturated air within a closed 

chamber that was allowed to equilibrate to ambient air 

temperature. Field properties were reviewed according to 

established quality-assurance and quality-control protocols 

and stored in the Water-Quality Data (QWDATA) system 

of the USGS National Water Information System (NWIS) 

database.

Data Analysis

Polychlorinated biphenyls represent a large group of 

human-induced organic chlorinated biyphenyl compounds 

called congeners (such as AroclorTM). Organochlorine 

pesticides include dichlorodiphenyltrichloroethane (DDT) 

and its degradates of dichlorodiphenyldichloroethane (DDD) 

and dichlorodiphenyldichloroethylene (DDE). Although 

banned for decades, PCBs and OCs are extremely resistant 

to degradation and tend to bioaccumulate (Smith and others, 

1988; Schwarzenbach and others, 1993). Semivolatile organic 

compounds include polycyclic aromatic hydrocarbons, 

phthalates, and phenol produced by the combustion of fossil 

fuels (Schwarzenbach and others, 1993). Trace elements 

occur naturally in rocks and soils, but their concentrations 

can become elevated because of human activity (Stumm and 

Morgan, 1996). Some of the potential sources of excess trace 

elements are fossil fuel combustion, industrial discharges, 

pesticides, and wastewater discharges. 

Bed sediment-quality conditions at the reference 

sites were used for comparison with other observed site 

concentrations to identify areas of concern. For this 

investigation, specific nonreference and reference sites 

were selected from locations within and away from areas of 

presumed potential sources of contaminants, respectively. The 

reference site sediment-quality conditions for trace elements, 

SVOCs, OCs, and PCBs in the study area are represented by 

concentrations in samples from three bed sediment sites 

(Ref-1, Ref-2, Ref-3A; table 1; fig. 1). 

Sediment-quality guidelines are used to provide a basis 

for predicting sediment toxicity or the absence of sediment 

toxicity of a contaminant to benthic organisms. In this 

study, trace element, SVOC, OC, and PCB concentrations 

in bed sediments were evaluated using sediment-quality 

guidelines, including those based on how aquatic organisms 

are directly affected by contaminated sediment (Persaud and 

others, 1993; U.S. Environmental Protection Agency, 1996; 

Canadian Council of Ministers of the Environment, 2001). 

The guidelines listed in tables 2 and 3 have the lowest effect 

levels (LEL) and probable effect levels (PEL) related to 

potential effects on benthic macroinvertebrates for individual 

major and trace element, SVOC, OC, and PCB concentrations 

in bed sediments. Site data were evaluated relative to 

established sediment-quality aquatic life criteria for benthic 

organisms to provide an indication of the constituents and 

sampling locations of concern and those sites that may require 

further investigation. The guideline concentrations used in 

the assessment may be over or under protective of aquatic 

organisms, depending on physical, hydrologic, and ecological 

conditions at a specific site. 

Geospatial data analyses were used to evaluate the 

spatial and temporal variability in trace and major elements, 

SVOC, OC, and PCB. Spatial datasets for the bed sampling 

locations were created for the investigation by using unique 

spatial identifiers to link bed sediment sites to analytical 

results for sampling events. The information obtained from 

the geospatial data analysis was needed to help evaluate 

the quality of streambed sediments in relation to guidelines 

for the protection of aquatic life (Persaud and others, 1993; 

U.S. Environmental Protection Agency, 1996; Canadian 

Council of Ministers of the Environment, 2001).

Quality Assurance

The quality-assurance procedures that were followed in 

this investigation complied with the guidelines established 

by the USGS National Water-Quality Assessment (NAWQA) 

Program (Mueller and others, 1997). Water-quality and 

bed sediment sampling protocols documented in the USGS 

National Field Manual (U.S. Geological Survey, variously 

dated) and the USGS South Carolina Water Science Center 

Quality-Assurance Plan for Water-Quality Activities (Journey 
Data Collection and Analysis 13

and Stringfield, U.S. Geological Survey, written commun., 

2006) were used to ensure that proper sampling procedures 

were followed. The protocol included the collection of replicate 

bed sediment samples at nonreference and reference sites 

(tables 7 and 8; table 8 is on p. 42 at the back of the report).

Replicate bed sediment samples were collected at 

four nonreference and one reference site (sites 2, 9, 13, 

51, and Ref-1; tables 7 and 8) to provide an evaluation 

of the variability in trace elements, SVOC, OC, and PCB 

concentrations associated with sample collection, processing, 

and analysis. Bias results associated with sample processing 

and analyses were evaluated from the relative difference 

in concentrations between regular and replicate samples. 

Bed sediment samples were collected at three reference 

bed sediment sites (Ref-1, Ref-2, and Ref-3A) to serve as a 

baseline for the sample analysis of trace and major elements, 

SVOCs, OCs, and PCBs. 

In this report, laboratory data have been reported as 

quantitative, estimated, and censored. Results above a 

“quantitation limit” (equivalent to the NWQL’s laboratory 

reporting limit, or LRL) are reported as quantitative; results 

between the “quantitation limit” and the “detection limit” 

(equivalent to the NWQL’s long-term method detection 

level, or LT-MDL) are reported as estimated (E) because the 

values are considered semiquantitative, and results below 

the LT-MDL are reported as censored (< LRL; Childress 

and others, 1999). In this report, results are listed in tables 

as follows: (1) quantitative values with no remark code, 

(2) estimated values with a remark code of E, and (3) censored 

values as less than LRL values. For graphical purposes, 

estimated and censored values were not replaced with other 

values, but were plotted as the reported estimated and LRL 

values. 
14 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Table 7. Concentrations of major ions, selected trace elements, and total organic carbon in quality-control bed sediment samples 

collected at Fort Gordon, GA, February–April 2010.

[EST, Eastern Standard Time; <63 μm, less than 63 micrometers; mg/kg, milligrams per kilogram; %, percent (1% = 10,000 mg/kg); abs., absolute; <, less than; 

---, no data; relative percent difference %, abs. Concentrations determined on the less than 63-micrometer fraction of bed sediment samples]

Site number

(fig. 1) Station number Station name Date Time(EST)

<63 μm 

%

Silver

(mg/kg)

Copper

(mg/kg)

Lead

(mg/kg)

Zinc

(mg/kg)

13 021970165 Spirit Creek above Gordon 

Lake at Fort Gordon, GA

2/3/10 1600 13 3.1 41 76 120

Replicate 13 021970165 Spirit Creek above Gordon 

Lake at Fort Gordon, GA

2/3/10 1600 13 3.1 41 75 120

Relative percent 

difference, abs.

021970165 Spirit Creek above Gordon 

Lake at Fort Gordon, GA

2/3/10 1600 0.00 0.00 0.00 1.3 0.00

51 331749082193600 BS-51 Fort Gordon, GA 2/18/10 1500 45 <0.5 14 39 64

Replicate 51 331749082193600 BS-51 Fort Gordon, GA 2/18/10 1500 45 <0.5 15 36 66

Relative percent 

difference, abs.

331749082193600 BS-51 Fort Gordon, GA 2/18/10 1500 0.00 --- 6.9 8.0 3.1

Ref-1 02197554 Brier Creek at U.S. Route 

221 near Wrens, GA

2/11/10 0900 8.0 <0.5 18 46 93

Replicate Ref-1 02197554 Brier Creek at U.S. Route 

221 near Wrens, GA

2/11/10 0900 8.0 <0.5 20 43 98

Relative percent 

difference, abs.

02197554 Brier Creek at U.S. Route 

221 near Wrens, GA

2/11/10 0900 0.00 --- 10.5 6.7 5.2

Table 7. Concentrations of major ions, selected trace elements, and total organic carbon in quality-control bed sediment samples 

collected at Fort Gordon, GA, February–April 2010.—Continued

[EST, Eastern Standard Time; <63 μm, less than 63 micrometers; mg/kg, milligrams per kilogram; %, percent (1% = 10,000 mg/kg); abs., absolute; <, less than; 

---, no data; relative percent difference %, abs. Concentrations determined on the less than 63-micrometer fraction of bed sediment samples]

Site number

(fig. 1) Date

Cadmium

(mg/kg)

Chromium

(mg/kg)

Cobalt

(mg/kg)

Nickel

(mg/kg)

Barium

(mg/kg)

Vanadium

(mg/kg)

Lithium

(mg/kg)

Beryllium

(mg/kg)

Molybdenum

(mg/kg)

Phosphorus

(mg/kg)

Strontium

(mg/kg)

13 2/3/10 0.40 110 5.5 18 480 110 31 2.1 2.6 2,900 100

Replicate 13 2/3/10 0.40 110 5.8 18 480 110 31 2.2 2.6 3,000 100

Relative percent 

difference, abs.

2/3/10 0.00 0.00 5.3 0.00 0.00 0.00 0.00 4.7 0.00 3.4 0.00

51 2/18/10 0.08 51 17 13 480 100 35 2.5 1.9 1,000 72

Replicate 51 2/18/10 0.07 52 18 14 490 100 36 2.5 1.9 1,000 76

Relative percent 

difference, abs.

2/18/10 13.3 1.9 5.7 7.4 2.1 0.00 2.8 0.00 0.00 0.00 5.4

Ref-1 2/11/10 0.30 52 27 14 620 110 34 2.9 2.0 1,300 93

Replicate Ref-1 2/11/10 0.20 54 28 15 650 120 35 3.0 1.9 1,300 97

Relative percent 

difference, abs.

2/11/10 40.0 3.8 3.6 6.9 4.7 8.7 2.9 3.4 5.1 0.00 4.2
Data Collection and Analysis 15

Table 7. Concentrations of major ions, selected trace elements, and total organic carbon in quality-control bed sediment samples 

collected at Fort Gordon, GA, February–April 2010.—Continued

[EST, Eastern Standard Time; <63 μm, less than 63 micrometers; mg/kg, milligrams per kilogram; %, percent (1% = 10,000 mg/kg); abs., absolute; <, less than; 

---, no data; relative percent difference %, abs. Concentrations determined on the less than 63-micrometer fraction of bed sediment samples]

Site number

(fig. 1) Date Arsenic(mg/kg)

Antimony

(mg/kg)

Selenium

(mg/kg)

Tin

(mg/kg)

Mercury

(mg/kg)

Thallium

(mg/kg)

Uranium

(mg/kg)

Manganese

(mg/kg)

Iron

 %

Aluminum

 %

Titanium

 %

13 2/3/10 6.6 1.5 1.4 10 0.33 <50 <50 210 2.8 11.0 0.91

Replicate 13 2/3/10 6.9 1.6 1.6 10 0.37 <50 <50 200 2.8 10.0 0.89

Relative percent 

difference, abs. 2/3/10 4.4 6.5 13.3 2.0 11.4 --- --- 4.9 0.00 9.5 2.2

51 2/18/10 3.8 0.60 0.80 3.5 0.08 <50 <50 970 1.9 9.3 0.89

Replicate 51 2/18/10 3.7 0.50 0.80 2.9 0.06 <50 <50 1,000 2.0 9.6 0.92

Relative percent 

difference, abs. 2/18/10 2.7 18.2 0.00 18.8 28.6 --- --- 3.0 5.1 3.2 3.3

Ref-1 2/11/10 5.3 0.60 0.80 3.6 0.07 <50 <50 1,500 2.8 9.5 0.92

Replicate Ref-1 2/11/10 5.3 0.60 0.90 3.9 0.06 <50 <50 1,600 2.9 9.9 0.93

Relative percent 

difference, abs. 2/11/10 0.00 0.00 11.8 8.0 15.4 --- --- 6.5 3.5 4.1 1.1

Table 7. Concentrations of major ions, selected trace elements, and total organic carbon in quality-control bed sediment samples 

collected at Fort Gordon, GA, February–April 2010.—Continued

[EST, Eastern Standard Time; <63 μm, less than 63 micrometers; mg/kg, milligrams per kilogram; %, percent (1% = 10,000 mg/kg); abs., absolute; <, 

less than; ---, no data; relative percent difference %, abs. Concentrations determined on the less than 63-micrometer fraction of bed sediment samples]

Site number

(fig. 1) Date Calcium %

Potassium

 %

Magnesium

 %

Sodium

 %

Total 

Carbon

 %

Total 

Nitrogen

 %

Total 

Sulfur

 %

Total 

Organic 

Carbon

 %

13 2/3/10 0.12 0.55 0.15 0.13 5.9 0.42 0.08 5.8

Replicate 13 2/3/10 0.12 0.57 0.15 0.11 6.1 0.45 0.08 5.9

Relative percent difference, abs. 2/3/10 0.00 3.6 0.00 16.7 3.3 6.9 2.6 1.7

51 2/18/10 0.13 1.3 0.18 0.21 4.5 0.35 0.07 4.3

Replicate 51 2/18/10 0.14 1.4 0.18 0.21 4.3 0.34 0.08 4.5

Relative percent difference, abs. 2/18/10 7.4 7.4 0.00 0.00 4.5 2.9 5.3 4.5

Ref-1 2/11/10 0.19 1.6 0.21 0.33 2.4 0.22 0.08 2.5

Replicate Ref-1 2/11/10 0.20 1.7 0.22 0.33 2.5 0.22 0.08 2.5

Relative percent difference, abs. 2/11/10 5.1 6.1 4.7 0.00 4.1 0.00 7.4 0.00
16 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Bed Sediment Quality

Field water-quality properties, as well as trace and major 

elements, SVOCs, OCs, and PCBs in bed sediment samples, 

were evaluated for selected streams at Fort Gordon, Georgia, 

to provide an assessment of stream conditions, information 

on the occurrence and distribution of various constituents in 

the study area, and an evaluation of the quality of streambed 

sediments in relation to guidelines for the protection of 

aquatic life (Persaud and others, 1993; U.S. Environmental 

Protection Agency, 1996; Canadian Council of Ministers of 

the Environment, 2001). Temporal trends in trace elements 

and SVOC concentrations also were identified at 13 nonreference sites previously sampled (McConnell and others, 

2000) to provide an assessment of variation associated with 

changes in potential sources, accumulation, and attenuation 

processes. Replicate bed sediment samples were collected at 

four nonreference and one reference site (sites 2, 9, 13, 51, and 

Ref-1; tables 7 and 8) to provide an estimate of the variability 

in constituent concentration associated with sample collection, 

processing, and analysis.

Water-Quality Condition of Streams

For the selected streams at Fort Gordon, water 

temperature ranged from 3.9 to 18.4 °C with the highest 

temperatures generally reported at sites sampled during 

April 2010 (table 4). Specific conductance generally was low 

in most streams, indicating waters of low dissolved-solids 

content. Specific conductance at all sites ranged from 13 

to 67 microsiemens per centimeter at 25 °C (μS/cm) with 

values less than 25 μS/cm at more than 50 percent of the sites 

(table 4). 

Measurements of pH indicated that most streams at 

Fort Gordon were slightly acidic during the sample-collection 

period, generally having pH values less than 7.0 (neutral). 

The median value for pH was 5.01, ranging from 3.36 to 7.39 

(table 4). For streams supporting warm-water fish species, 

pH of 6.0 is the threshold used by the Georgia Department of 

Natural Resources aquatic life criteria (Georgia Department 

of Natural Resources, 1998). Measured pH values less than 

6.0 were reported at 29 of the 35 total sites (reference and 

nonreference sites). 

Dissolved-oxygen concentrations at 34 of the 35 stream 

sites (reference and nonreference) were greater than the daily 

average of 5 milligrams per liter (mg/L) but not less than the 

4 mg/L Georgia water-quality standard for waters supporting 

warm-water fish species (Georgia Department of Natural 

Resources, 1998; table 4). Dissolved-oxygen concentrations 

were not reported at site 49 because of potential equipment 

malfunction.

Major Ions, Trace Elements, and Total Organic 

Carbon Concentrations

Concentrations of 34 major ions, trace elements, and 

TOC were determined in the fine-grained fraction (<63 μm) 

of bed sediment samples collected from 32 nonreference sites 

and 3 reference sites at Fort Gordon (table 5). Analysis of bed 

sediment samples indicated that the proportion of fine-grained 

particles ranged from 0.5 percent at site 32 to 87 percent 

upstream at site 2. 

Concentrations of TOC ranged from 1.9 percent (site 33) 

to 26 percent (site 53) by weight at bed sediment locations, 

with a mean concentration of 7.9 and 7.0 percent by weight 

at nonreference and reference sites, respectively. In this 

investigation, most of the bed sediment samples (97 percent) 

contained TOC concentrations greater than 2 percent by 

weight, which is consistent with previous studies (McConnell 

and others, 2000). The relatively high TOC concentrations 

can be attributed to analysis of the fine-grained fraction of the 

sediment sample that contains a large fraction of the TOC and 

to naturally occurring TOC in the bed sediment samples. The 

organic carbon content of the sediment can affect how strongly 

and how much of the SVOCs, OCs, and PCBs are sorbed to 

the sediment (Smith and others, 1988; Schwarzenbach and 

others, 1993). Specifically, the greater amount of organic 

carbon in the sediment, the greater the ability of the sediment 

to sorb organic compounds.

Major ion and trace element concentrations in finegrained bed sediment samples at 15 of the 32 nonreference 

sites at Fort Gordon during February–April 2010 were two 

times greater than the average concentrations in samples from 

the 3 reference sites (table 5). At sites 4 and 18, concentrations 

for several trace elements in bed sediments were greater than 

500 percent of the average concentrations in samples from the 

reference sites (table 5). Bed sediment samples collected from 

site 37 contained mercury concentrations that were nine times 

greater than the average concentration of mercury in samples 

from the reference sites (table 5).

Eight trace elements have LELs, PELs, and the PELs 

established for the amphipod Hyalella azteca (PEL-HA28) in 

the sediment-quality guideline: arsenic, cadmium, chromium, 

copper, lead, mercury, nickel, and zinc (table 2). For this 

assessment, bed sediment concentrations of these trace 

elements were compared to established PELs and PEL-HA28s 

to identify sites that have a greater probability of affecting 

aquatic biota (Persaud and others, 1993; U.S. Environmental 

Protection Agency, 1996; Canadian Council of Ministers 

of the Environment, 2001; table 2). No sites had arsenic 

concentrations in bed sediment that exceeded the PEL-HA28 

of 48 milligrams per kilogram (mg/kg); however, bed 

sediment arsenic concentrations at sites 30 and 37 were 

at the PEL of 17 mg/kg (tables 2 and 5). Most sites had 
Bed Sediment Quality 17

cadmium concentrations in bed sediment that were an order 

of magnitude below the established PEL and PEL-HA28 

of 3.5 mg/kg and 3.2 mg/kg, respectively (tables 2 and 5). 

Chromium bed sediment concentrations exceeded the PEL 

of 90 mg/kg at 21 of 35 sites (including 1 of the 3 reference 

sites). Additionally, 5 of the 21 sites that exceeded the PEL 

for chromium in bed sediment also exceeded the PEL-HA28 

of 120 mg/kg. At least one exceedance was observed for the 

PEL or PEL-HA28 for zinc, nickel, and copper concentrations 

in bed sediments. Site 18 had copper concentrations above 

the PEL-HA28 of 100 mg/kg. Sites 2 and 31 had nickel 

concentrations above the PEL-HA28 of 33 mg/kg (tables 2 

and 5). Site 12 had zinc concentrations above the PEL of 

315 mg/kg (tables 2 and 5). 

Concentrations of major ions and trace elements in bed 

sediments exceeded PEL-HA28s for aquatic life established 

by the U.S. Environmental Protection Agency (USEPA; 1996) 

at 37 percent of the sampling locations. The greatest number 

of exceedances was observed at site 2 (fig. 2). The greatest 

frequency of exceedances for major ions and trace elements 

was observed in lead when compared to other trace and major 

elements (tables 2 and 5). On the basis of aquatic life criteria, 

concentrations of lead exceeded USEPA (1996) guidelines 

for bed sediment (less than or equal to 82 mg/kg) for the 

amphipod Hyalella azteca at 34 percent of sampling locations 

(fig. 3).

Semivolatile Organic Compounds, 

Organochlorine Pesticides, and Polychlorinated 

Biphenyl Concentrations

Concentrations of SVOCs, OCs, and PCBs were 

determined in bed sediment samples collected from 32 

nonreference and 3 reference sites at Fort Gordon (table 6). 

Organic contaminant compounds were detected in bed 

sediment samples at 94 percent of the sites sampled (fig. 4). 

Nondetections of SVOCs, OCs, and PCBs were observed 

at reference site Ref-3A, while minimal concentrations of 

SVOCs and OCs were present at the remaining reference sites 

(Ref-1 and Ref- 2). DDT and its degradate DDE were detected 

in bed sediments at one reference site (Ref-2) at or above the 

levels observed at nonreference sites. The polycyclic aromatic 

hydrocarbons (PAHs)—pyrene, fluoranthene, chrysene, and 

benzo(b)fluoranthene—also were detected at one or more 

reference sites within the range observed at nonreference 

sites. Pentachlorophenol and phenol were also detected at 

reference site Ref-2, but at slightly lower concentrations than 

at nonreference sites. No PCBs were detected at any of the 

reference sites.

Semivolatile organic compounds, OCs, and PCBs in bed 

sediments were detected with greater frequency in upstream 

sampling locations when compared to downstream locations 

(fig. 4). The greatest number of detections for SVOCs, OCs, 

and PCBs was reported for bed sediment samples collected 

from sites 4 and 13 (fig. 4; table 6). Relatively high detections 

of organic contaminants also were reported for samples 

collected at sites 12, 39, and 48. The average number of 

SVOCs, OCs, and PCBs detected in bed sediment samples 

at nonreference and reference sites was 15, 1, and less than 

1, respectively. Although SVOCs, OCs, and PCBs were 

detected at the majority of nonreference sites, concentrations 

at most sampling locations were at the minimum method 

reporting levels (table 6). The most frequently detected 

organic compounds in bed sediment were the PAHs pyrene 

and fluoranthene (detected at 28 of the 32 nonreference sites). 

Pyrene and fluoranthene concentrations ranged from the 

minimum reporting level to 4,590 micrograms per kilogram 

(μg/kg; site 39) and 6,040 μg/kg (site 39), respectively. Among 

the nonreference sites, median concentrations of pyrene and 

fluoranthene were below the minimum reporting level and 

estimated to be 23 and 28 μg/kg, respectively (table 6). 

Other commonly detected PAHs included chrysene 

and phenanthrene, which were detected at 24 and 21 sites, 

respectively. Chrysene and phenanthrene concentrations 

ranged from the minimum reporting level to 18,500 μg/kg 

(site 12) and 1,970 μg/kg (site 39), respectively. Among the 

nonreference sites, median concentrations of chrysene and 

phenanthrene were below the minimum reporting level at 

concentrations estimated to be at 24 and 36 μg/kg, respectively 

(table 6). The PCB congener AroclorTM 1260 was detected 

at estimated concentrations of 6.18 μg/kg and 3.49 μg/kg at 

sites 4 and 48, respectively; and congener AroclorTM 1254 was 

detected at estimated concentrations of 3.70 μg/kg, 5.83 μg/kg, 

and 3.20 μg/kg at sites 31, 39, and 48, respectively (table 6). 

Twelve nonreference sites also had detectable concentrations 

of either DDT or at least one of its degradates, DDD and DDE 

(sites 1, 4, 9, 10, 13, 38, 41, 43, 48, 51, 53, and 54). 

Compared to other sampling locations, bed sediments 

from site 12 contained the highest concentrations of chrysene 

(18,500 μg/kg) with elevated concentrations of phenanthrene 

(1,020 μg/kg; table 6). The greatest concentrations of pyrene 

(4,590 μg/kg), phenanthrene (1,970 μg/kg), fluoranthene 

(6,040 μg/kg), benzo[a]anthracene (1,810 μg/kg), and 

AroclorTM 1254 (E5.83 μg/kg) were detected in bed sediments 

from site 39 (table 6). Elevated concentrations of SVOCs 

for other compounds also were detected in bed sediments 

collected at this site. 

Concentrations of SVOCs, OCs, and PCBs in bed 

sediments exceeded PEL-HA28s for aquatic life established 

by the USEPA (1996) at more than 9 percent of nonreference 

sampling locations with exceedances measured at three 

sites (table 3). The greatest frequency of detections and 

exceedances for SVOCs, OCs, and PCBs was observed for 

fluoranthene when compared to other organic compounds 

(tables 3 and 6). Concentrations of fluoranthene were detected 

at 28 nonreference sites and exceeded USEPA (1996) 

guidelines for bed sediment (less than or equal to 320 μg/kg) 

for the amphipod Hyalella azteca at three sites (sites 12, 33, 

and 39; fig. 5).
18 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Ellis Pond

Mirror Lake

Boardmans Pond

Fort Gordon Reservoir

Signal Lake

Maxwell Lake

Butler Creek

McCoys Creek

Marcum Branch

South Prong Creek

Bath Branch

Sandy Run Creek

Spirit Creek

Rachel Branch

Boggy Gut Creek

Headstall Creek

Brier Creek

1

78

221

221

Richmond

McDuffie

Columbia

Burke

Jefferson

Warren

9

4

2 1

57

56

54

53

52

51

50

49

48

47

46

45

43

42

41

39 38

37

35 33

31

32

30

18

17

12

13

10

Ref- 2

Ref- 1

Ref- 3A

82°5'W 82°10'W 82°15'W 82°20'W

33°24'N33°20'N33°16'N

Base from ESRI® Data & Maps, 2008Universal Transverse Mercator projection Zone 17 0 2 4 1 KILOMETERS

0 2 4 1 MILES

EXPLANATION

Fort Gordon Boundary

Aquatic-Life Criteria for Trace ElementsNumber of Exceedances and Site Number

 0 1 2 3

9

430

2

Figure 2. Relation among the number of bed sediment samples exceeding sediment-quality guidelines for selected major ions and trace elements in reference and nonreference bed sediment samples at Fort Gordon, GA, February–April 2010. Sites with the same colors have the same number of exceedances.
Bed Sediment Quality 19

Ellis Pond

Mirror Lake

Boardmans Pond

Fort Gordon Reservoir

Signal Lake

Maxwell Lake

Butler Creek

McCoys Creek Marcum Branch

South Prong Creek

Bath Branch Sandy Run Creek

Spirit Creek

Rachel Branch

Boggy Gut Creek

Headstall Creek

Brier Creek

1

78

221

221

Richmond

McDuffie

Columbia

Burke

Jefferson

Warren

9

4

2 1

57

56

54

53

52

51

50

49

48

47

46

45

43

42

41

39

38

37

35 33

30

31

18

17

13

12

10

Ref- 2

Ref- 1

Ref- 3A

32

82°5'W 82°10'W 82°15'W 82°20'W

33°24'N33°20'N33°16'N

Base from ESRI® Data & Maps, 2008Universal Transverse Mercator projection Zone 17 0 2 4 1 KILOMETERS

0 2 4 1 MILES

EXPLANATION

Fort Gordon Boundary

Aquatic-Life Criteria for Lead

Meets (< or equal to 82 mg/kg)Exceeds (> 82 mg/kg)

Lead in mg/kg and Site Number

32 to 8283 to 110111 to 150151 to 190191 to 280

41

39

12

3718

Note: mg/kg is milligrams per kilogram

Figure 3. Relation of lead concentrations to aquatic life criteria at sampling locations at Fort Gordon, GA, February–April 2010. Sites with the same colors have the same ranges in lead concentrations.
20 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Ellis Pond

Mirror Lake

Boardmans Pond

Fort Gordon Reservoir

Signal Lake

Maxwell Lake

Butler Creek

McCoys Creek

Marcum Branch

South Prong Creek

Bath Branch

Sandy Run Creek

Spirit Creek

Rachel Branch

Boggy Gut Creek

Headstall Creek

Brier Creek

1

78

221

221

Richmond

McDuffie

Columbia

Burke

Jefferson

Warren

9

4

2 1

57

56

54

53

52

51

50

49

48

47

46

45

43

42

41

39 38

37

35 33

31

32

30

18

17

12

13

10

Ref- 2

Ref- 1

Ref- 3A

82°5'W 82°10'W 82°15'W 82°20'W

33°24'N33°20'N33°16'N

Base from ESRI® Data & Maps, 2008Universal Transverse Mercator projection Zone 17 0 2 4 1 KILOMETERS

0 2 4 1 MILES

EXPLANATION

Fort Gordon Boundary

SVOC, PCB, and OC Detections and Site Number

0 to 67 to 1213 to 1920 to 2930 to 37

57

452

47

4

Figure 4. Relation between number of detections of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in nonreference and reference bed sediment samples at Fort Gordon, GA, February–April 2010. Sites with the same colors have the same ranges in the number of detections.
Bed Sediment Quality 21Figure 5. Relation of fluoranthene concentrations to aquatic life criteria at sampling locations at Fort Gordon, GA, February–April 2010.

Sites with the same colors have the same ranges in fluoranthene concentrations.

Ellis Pond

Mirror Lake

Boardmans Pond

Fort Gordon Reservoir

Signal Lake

Maxwell Lake

Butler Creek

McCoys Creek

Marcum Branch

South Prong Creek

Bath Branch

Sandy Run Creek

Spirit Creek

Rachel Branch

Boggy Gut Creek

Headstall Creek

Brier Creek

1

78

221

221

Richmond

McDuffie

Columbia

Burke

Jefferson

Warren

9

4

2 1

57

56

54

53

52

51

50

49

48

47

46

45

43

42

41

39

38

37

35 33

31

32

30

18

17

13

12

10

Ref- 2

Ref- 1

Ref- 3A

82°5'W 82°10'W 82°15'W 82°20'W

33°24'N33°20'N33°16'N

Base from ESRI® Data & Maps, 2008Universal Transverse Mercator projection Zone 17 0 2 4 1 KILOMETERS

0 2 4 1 MILES

EXPLANATION

Fort Gordon Boundary

Aquatic-Life Criteria for Fluoranthene

Meets (< or equal to 320 μg/kg)Exceeds (>320 μg/kg)

Fluoranthene in μg/kg and Site Number

< or equal to 320321 to 1,0001,001 to 2,0002,001 to 3,0003,001 to 6,040

Note: μg/kg is micrograms per kilogram

41

12

33
22 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Quality-Control Data for Bed Sediment Samples

Replicate bed sediment samples were collected at 

nonreference and reference sites to provide an evaluation 

of the variability in trace and major elements, SVOC, OC, 

and PCB concentrations associated with sample collection, 

processing, and analysis (tables 7 and 8). Bias results 

associated with sample processing and analyses were 

evaluated from the relative difference in concentrations 

between regular and replicate samples. Bed sediment samples 

were collected at three reference bed sediment sites to serve as 

a baseline for the sample analysis of trace and major elements, 

SVOC, OC, and PCB concentrations. 

Major Ions, Trace Elements, and Total Organic 

Carbon Concentrations

The average relative differences of major ions, trace 

element, and total organic carbon concentrations in the 

regular and replicate samples for nonreference (sites 13 and 

51) and reference sites (Ref-1) were 4 and 6 percent, ranging 

from 0.0 to 28.6 percent and 0.0 to 40 percent, respectively 

(table 7). Relative differences among concentrations of major 

ions, trace element, and total organic carbon in the regular 

and replicate sample for nonreference and reference sites 

were less than 20 percent at all sampling locations, except 

for mercury (28.6 percent) and cadmium (40 percent). The 

standard deviation of concentrations among all quality-control 

samples (nonreference and reference sites) was less than 10, 

except for phosphorus, manganese, and barium where greater 

variability was reported for regular and replicate samples. The 

low relative differences and overall low standard deviations 

indicate major ions, trace element, and total organic carbon 

concentrations in the fine-grained fraction of bed sediments at 

sampling sites have a low spatial variation and low bias from 

sample processing and analysis. 

Semivolatile Organic Compounds, 

Organochlorine Pesticides, and Polychlorinated 

Biphenyl Concentrations

Concentrations of SVOCs, OCs, and PCBs in the qualitycontrol samples were somewhat variable, but not atypical of 

quantitative analysis of organic contaminants in bed sediments 

(table 8). The average relative differences of SVOC, OC, and 

PCB concentrations in the regular and replicate samples for 

nonreference sites (sites 2 and 9) were 28 percent (table 8). 

Concentrations of most compounds in the quality-control 

samples from sampling sites were at the minimum method 

reporting level; therefore, few compounds were available 

to evaluate variability and bias from sampling, processing, 

and analysis. Variation in the method reporting levels could 

likely be attributed to the individual sample matrix that 

affects laboratory extraction efficiency of organic compounds 

from the sediment (Furlong and others, 1996). In replicate 

samples having reported quantitative or estimated compound 

concentrations in both samples, the relative differences range 

from 4.66 to 84.5 percent (table 8). The standard deviation 

of concentrations for all quality-control samples, however, 

was relatively low when compared to the range of observed 

concentrations among the sampling sites. Standard deviations 

of compound concentrations for regular and replicate samples 

were less than 10, except for p-Cresol, and bis (2-ethylhexyl) 

phthalate where greater variability was reported for qualitycontrol samples.

Temporal Variation in Concentrations

Temporal trends were evaluated at 13 nonreference 

sites that had been sampled previously (McConnell and 

others, 2000) to provide an assessment of the variability in 

the number of detections and concentrations for trace and 

major elements, PAHs, and other SVOCs in bed sediment 

samples associated with potential sources, accumulation, and 

attenuation processes. The sampling locations were sites 1, 

2, 4, 9, 10, 12, 13, 17, 18, 30, 33, 35, and 45 (table 9). On the 

basis of available data, temporal variation associated with 

sediment samples was assessed using percentage changes 

in the number of detections and in concentrations between 

previously sampled and current bed sediment constituents to 

provide an evaluation of the quality of streambed sediments in 

relation to guidelines for the protection of aquatic life (Persaud 

and others, 1993; U.S. Environmental Protection Agency, 

1996; Canadian Council of Ministers of the Environment, 

2001).
Bed Sediment Quality 23

Major Ions, Trace Elements, and Total Organic 

Carbon Concentrations

Overall, the percentage change in major ions, trace 

elements, and TOC detected from 1998 to 2010 was minimal 

at the 13 sites (table 9). Some exceptions were bed sediment 

samples collected from sites 10 and 35, for which percentage 

changes were greater than 8 percent (table 9). For the eight 

trace elements with established sediment-quality guidelines 

(table 2), percentage changes in constituent concentrations 

for bed sediments ranged from –81 to 141 with the 

greatest percentage change reported for copper at site 13 

(table 10). Relatively high percentage changes in constituent 

concentrations were also observed for cadmium and arsenic at 

sites 2 and 45, respectively (table 10). 

Concentrations of trace elements in bed sediments 

exceeded PEL-HA28s for aquatic life established by the 

USEPA (1996) at 46 percent and 69 percent of the current 

and previously sampled 13 sites, respectively, with the 

greatest number of exceedances for both sampling periods 

observed at site 2 (fig. 2; McConnell and others, 2000). Lead 

concentrations had the greatest frequency of exceedances 

when compared to other trace and major elements (tables 2 

and 5). On the basis of aquatic life criteria, concentrations 

of lead exceeded USEPA (1996) guidelines for bed sediment 

(less than or equal to 82 mg/kg) for the amphipod Hyalella 

azteca in more than 45 percent of bed sediments with an 

average concentration of 133 mg/kg and 111 mg/kg at 

previously sampled and current locations, respectively 

(table 5; McConnell and others, 2000). The percentage change 

in lead concentrations ranged from –48 to 27 with the greatest 

percentage increase reported for sites 30 and 45 (fig. 6; 

table 10). Decreases in lead concentrations for bed sediments 

were reported at 10 of the 13 sites (sites 1, 2, 4, 9, 12, 13, 

17, 18, 33, and 35) with the greatest percentage decrease 

reported for site 17 (table 10). On the basis of quality-control 

bed sediment data for nonreference sites (table 7), temporal 

changes in lead concentrations at sites 1 and 18 could be 

attributed to analytical and sampling variability (table 10). No 

temporal changes in lead concentrations were reported for bed 

sediments collected at site 10 (table 10).

Table 9. Percentage change in the number of detections in bed sediment samples collected during May 1998 and February–April 2010 

at Fort Gordon, GA.

[EST, Eastern Standard Time; %, percentage change by weight; ---, no data. Percentage changes were determined on the less than 63-micrometer fraction of bed 

sediment samples]

Site 

number

(fig. 1)

Station 

number Station name Date Time(EST)

Major ions 

and trace 

elements

(%)

Semivolatile 

organic 

componds

(%)

1 02196843 Butler Creek tributary above Boardmans Pond at Fort Gordon, GA 3/17/10 1330 1.90 -60.9

2 02196842 Soil Erosion Lake at Fort Gordon, GA 3/16/10 1330 -3.76 -55.3

4 02196823 Butler Creek tributary (Beaver Pond) at Fort Gordon, GA 2/3/10 1130 -3.76 -34.9

9 021970190 Gordon Lake at Fort Gordon, GA 3/17/10 0830 -0.65 4.54

10 021970180 Mirror Lake at Fort Gordon, GA 3/17/10 1200 8.27 -47.5

12 021970168 Spirit Creek tributary near headwaters at Fort Gordon, GA 2/17/10 1400 -3.76 -31.3

13 021970165 Spirit Creek above Gordon Lake at Fort Gordon, GA 2/3/10 1600 -0.65 100

17 021970140 McCoy Creek above Signal Lake at Fort Gordon, GA 2/17/10 1415 -3.76 -68.0

18 021970136 Marcum Branch below Maxwell dam at Fort Gordon, GA 2/3/10 1400 -3.76 -19.7

30 021970130 North Fork Spirit Creek at Fort Gordon, GA 2/2/10 1500 1.90 -43.3

33 021970158 McCoy Creek below Signal Lake at Fort Gordon, GA 2/3/10 1220 -0.65 43.1

35 021970175 Spirit Creek tributary above Mirror Lake at Fort Gordon, GA 2/9/10 1230 8.27 -25.9

45 02197023 South Prong Creek above Ellis Pond at Fort Gordon, GA 2/10/10 0915 4.78 -8.33
24 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Table 10. Percentage change in selected trace element concentrations in bed sediment samples collected during May 1998 and February–April 2010 at Fort Gordon, GA. [EST, Eastern Standard Time; %, percentage change by weight; ---, no data; *, percentage change could be attributed to analytical and sampling variability. Percentage changes were determined on the less than 63-micrometer fraction of bed sediment samples] Site number (fig. 1) Station number Station name Date Time (EST) Copper (%) Lead (%) Zinc (%) Cad- mium (%) Chro- mium (%) Nickel (%) Arse- nic (%) Mer- cury (%)

1 02196843 Butler Creek tributary above Boardmans Pond at Fort Gordon, GA 3/17/10 1330 40.9 *-7.41 41.7 75.0 26.6 15.0 13.2 0.00

2 02196842 Soil Erosion Lake at Fort Gordon, GA 3/16/10 1330 12.2 -10.0 36.8 100 -7.14 33.3 -26.5 -64.0

4 02196823 Butler Creek tributary (Beaver Pond) at Fort Gordon, GA 2/3/10 1130 -34.9 -22.6 -32.0 -79.0 9.09 *4.35 *-3.23 *-22.7

9 021970190 Gordon Lake at Fort Gordon, GA 3/17/10 0830 -34.3 -21.1 -40.7 -66.7 -6.00 -9.09 -9.38 -54.8

10 021970180 Mirror Lake at Fort Gordon, GA 3/17/10 1200 *4.35 0.00 -30.0 --- 20.0 *-3.85 -18.5 -40.0

12 021970168 Spirit Creek tributary near headwaters at Fort Gordon, GA 2/17/10 1400 13.1 -29.4 21.6 -79.5 2.04 -15.2 *-2.65 -29.4

13 021970165 Spirit Creek above Gordon Lake at Fort Gordon, GA 2/3/10 1600 141 -18.3 36.4 -33.3 32.5 28.6 13.3 *-14.6

17 021970140 McCoy Creek above Signal Lake at Fort Gordon, GA 2/17/10 1415 -30.8 -48.4 -29.4 -50.0 30.4 *-4.17 49.6 -81.4

18 021970136 Marcum Branch below Maxwell dam at Fort Gordon, GA 2/3/10 1400 48.6 *-6.67 30.8 -37.5 20.0 0.00 *-1.79 -33.3

30 021970130 North Fork Spirit Creek at Fort Gordon, GA 2/2/10 1500 *2.50 27.3 -26.7 -56.3 47.4 0.00 40.5 *23.8 

33 021970158 McCoy Creek below Signal Lake at Fort Gordon, GA 2/3/10 1220 -33.3 -23.0 -30.0 0.00 0.00 -14.3 9.33 *-27.3

35 021970175 Spirit Creek tributary above Mirror Lake at Fort Gordon, GA 2/9/10 1230 *-4.00 -33.0 18.2 --- *-1.00 -25.9 27.1 -68.8

45 02197023 South Prong Creek above Ellis Pond at Fort Gordon, GA 2/10/10 0915 *4.55 27.3 18.4 --- 25.3 18.8 107.3 55.6
Bed Sediment Quality 25

Ellis Pond

Mirror Lake

Boardmans Pond

Fort Gordon Reservoir

Signal Lake

Maxwell Lake

Butler Creek

McCoys Creek Marcum Branch

South Prong Creek

Bath Branch Sandy Run Creek

Spirit Creek

Rachel Branch

Boggy Gut Creek

Headstall Creek

Brier Creek

1

78

221

221

Richmond

McDuffie

Columbia

Burke

Jefferson

Warren

9

4

2 1

45

35 33

30

18

17

12

13

10

82°5'W 82°10'W 82°15'W 82°20'W

33°24'N33°20'N33°16'N

Base from ESRI® Data & Maps, 2008Universal Transverse Mercator projection Zone 17 0 2 4 1 KILOMETERS

0 2 4 1 MILES

EXPLANATION

Fort Gordon Boundary

Percent Change in Lead Concentrations and Site Number

-48 to -30-29 to -15-14 to -2-1 to 12 to 1516 to 27

17

1218

30

Figure 6. Percentage change in lead concentrations in bed sediment samples collected during May 1998 and February–April 2010 at Fort Gordon, GA. 

Sites with the same colors have the same ranges in percentage change in lead concentrations.
26 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Semivolatile Organic Compound Concentrations

The average number of detections of PAHs and other 

SVOCs among previously sampled and current bed sediment 

constituents were 27 and 23, respectively (table 6; McConnell 

and others, 2000). Detection percentages of SVOCs in bed 

sediment samples from sites 4 and 12 were consistently 

higher (40 percent or greater) when compared to other 

sampling locations (table 6; McConnell and others, 2000). The 

percentage change of SVOCs detected in previously sampled 

and current bed sediments ranged from –68 to 100 with 

the greatest percentage increase reported for site 13 (fig. 7; 

table 9). Decreases in SVOC detections in bed sediments were 

reported at 10 of the 13 sites (sites 1, 2, 4, 10, 12, 17, 18, 30, 

35, and 45) with an average percentage change of –40 among 

the sites (table 9). At sites 9, 13, and 33, increases in SVOC 

detections were reported for bed sediments, with percentage 

changes of 5, 100, and 43, respectively (table 9). 

The most frequently detected organic compounds 

among bed sediment samples were pyrene, phenanthrene, and 

fluoranthene (detected at 45 percent or more sites; table 6; 

McConnell and others, 2000). The greatest concentrations 

reported for pyrene, phenanthrene, and fluoranthene at 

previously sampled bed sediment sites were 12,200 μg/kg, 

7,340 μg/kg, and 17,100 μg/kg, respectively (McConnell 

and others, 2000). Elevated concentrations of pyrene, 

phenanthrene, and fluoranthene, which exceeded PEL-HA28s 

for aquatic life established by the USEPA (1996), were also 

reported at current bed sediment sites (table 6).
Bed Sediment Quality 27

Ellis Pond

Mirror Lake

Boardmans Pond

Fort Gordon Reservoir

Signal Lake

Maxwell Lake

Butler Creek

McCoys Creek Marcum Branch

South Prong Creek

Bath Branch Sandy Run Creek

Spirit Creek

Rachel Branch

Boggy Gut Creek

Headstall Creek

Brier Creek

1

78

221

221

Richmond

McDuffie

Columbia

Burke

Jefferson

Warren

9

4

2 1

45

35 33

30

18

17

12

13

10

82°5'W 82°10'W 82°15'W 82°20'W

33°24'N33°20'N33°16'N

Base from ESRI® Data & Maps, 2008Universal Transverse Mercator projection Zone 17 0 2 4 1 KILOMETERS

0 2 4 1 MILES

EXPLANATION

Fort Gordon Boundary

Percent Change in Number of SVOC Detections and Site Number

-68 to -30-29 to -7-6 to 67 to 3031 to 7071 to 103

18

9

13

12

33

Figure 7. Percentage change in the number of detections for semivolatile organic compounds (SVOCs) in bed sediment samples during May 1998 and February–April 2010 at Fort Gordon, GA. Sites with the same colors have the same ranges in percentage change in the number of detections.
28 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Summary

Analyses of bed sediment data collected during 

February–April 2010 at 35 sites (32 nonreference sites and 3 

reference sites) at Fort Gordon, Georgia, were used to describe 

the occurrence and distribution of trace and major elements, 

semivolatile organic compounds (SVOCs), organochlorine 

pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed 

sediments of selected streams. The results presented in this 

report can be used to help evaluate the quality of streambed 

sediments in relation to guidelines for the protection of aquatic 

life and identify temporal trends in trace elements and SVOC 

concentrations at previously sampled sites. 

Concentrations of 34 major ions, trace elements, and total 

organic carbon (TOC) were determined in the fine-grained 

fraction (<63 micrometers) of bed sediment samples collected 

from 32 nonreference and 3 reference sites at Fort Gordon. 

In this investigation, most of the bed sediment samples 

(97 percent) contained TOC concentrations greater than 

2 percent by weight, which is consistent with previous studies. 

Major ion and trace element concentrations in fine-grained 

bed sediment samples at 15 of the 32 sites were two times the 

average concentrations in samples from the 3 reference sites at 

Fort Gordon. At sites 4 and 18, concentrations for several trace 

elements in bed sediments were greater than 500 percent of 

the average concentrations in samples from the reference sites. 

Bed sediment samples collected at site 37 contained mercury 

concentrations that exceeded the average concentrations in 

samples from the reference sites by a factor of nine. The 

percentage change in major ions, trace elements, and TOC 

detected at previously sampled and current bed sediment sites 

ranged from –4 to 8 with an average percentage change of less 

than 1 percent. 

Trace and major element concentrations in bed sediment 

samples commonly exceeded sediment-quality guidelines 

for bed sediments. Eight trace elements have sedimentquality guidelines established: arsenic, cadmium, chromium, 

copper, lead, mercury, nickel, and zinc. In this investigation, 

bed sediment concentrations of these trace elements were 

compared to established sediment-quality guidelines to 

identify sites that have a greater probability of affecting 

aquatic biota. No sites had arsenic concentrations in bed 

sediment that exceeded the probable effect levels for the 

amphipod Hyalella azteca of 48 milligrams per kilogram 

(mg/kg), but arsenic concentrations in bed sediment at sites 

30 and 37 were at the probable effect level of 17 mg/kg. 

Most sites had cadmium concentrations in bed sediment that 

were an order of magnitude below the established probable 

effect levels. Chromium concentrations in bed sediment 

exceeded the probable effect level of 90 mg/kg at 21 of 35 

sites (including 1 of the 3 reference sites). Additionally, 5 of 

the 21 sites exceeded the probable effect level for amphipod 

Hyalella azteca for chromium in bed sediments. At least one 

exceedance was observed for the probable effect levels for 

zinc, nickel, and copper concentrations in bed sediments. 

Major ions and trace element concentrations in bed 

sediments exceeded probable effect levels for aquatic life 

(based on the amphipod Hyalella azteca) at 46 percent and 

69 percent of the current and previously sampled locations, 

respectively, with the greatest frequency of exceedances 

reported for lead. On the basis of aquatic life criteria, 

concentrations of lead exceeded bed sediment guidelines (less 

than or equal to 82 mg/kg) for the amphipod Hyalella azteca

in more than 45 percent of bed sediments with an average 

concentration of 133 mg/kg and 111 mg/kg at previously 

sampled and current locations, respectively. 

Concentrations of 102 SVOCs, OCs, and PCBs were 

determined in bed sediment samples collected from 32 

nonreference and 3 reference sites at Fort Gordon. Organic 

contaminant compounds were detected in bed sediment 

samples at 94 percent of the sites sampled. Nondetections 

of SVOCs, OCs, and PCBs were observed at reference 

site Ref-3A, while minimal concentrations of SVOCs and 

OCs were present at the other reference sites (Ref-1 and 

Ref- 2). DDT and its degradate DDE were detected in bed 

sediments at one reference site (Ref-2) at or above the 

levels seen at nonreference sites. The polycyclic aromatic 

hydrocarbons (PAHs)—pyrene, fluoranthene, chrysene, and 

benzo(b)fluoranthene—also were detected at one or more 

reference site within the range observed at nonreference 

sites. Pentachlorophenol and phenol were also detected at 

reference site Ref-2, but at slightly lower concentrations than 

at nonreference sites. No PCBs were detected at any of the 

reference sites.

Detections of SVOCs, OCs, and PCBs were reported 

with greater frequency in bed sediments at upstream sampling 

locations when compared to downstream locations. The 

greatest number of detections for SVOCs, OCs, and PCBs 

were reported for bed sediment samples collected from sites 

4 and 13. Relatively high detections of organic contaminants 

also were reported for samples collected from sites 12, 39, and 

48. The most frequently detected organic compounds in bed 

sediment were the PAHs pyrene and fluoranthene (detected at 

28 out of the 32 nonreference sites). Other commonly detected 

PAHs included chrysene and phenanthrene, which were 

detected at 24 and 21 sites, respectively. The PCB congener 

AroclorTM 1260 was detected at estimated concentrations of 

6.18 μg/kg and 3.49 μg/kg at sites 4 and 48, respectively; 

and congener AroclorTM 1254 was detected at estimated 

concentrations of 3.70 μg/kg, 5.83 μg/kg, and 3.20 μg/kg 

at sites 31, 39, and 48, respectively. Twelve nonreference 

sites also had detectable concentrations of either DDT or at 

least one of its degradates, DDD and DDE (sites 1, 4, 9, 10, 

13, 38, 41, 43, 48, 51, 53, and 54). The average number of 

SVOCs, OCs, and PCBs detected in bed sediment samples 

at nonreference and reference sites was 15, 1, and less than 

1, respectively. The percentage change of SVOCs detected 

at previously sampled and current bed sediment sites ranged 

from –68 to 100 with the greatest percentage increase reported 

for site 13. 
Selected References 29

Concentrations of SVOCs, OCs, and PCBs in bed 

sediments exceeded probable effect levels for aquatic 

life (based on the amphipod Hyalella azteca) established 

by the U.S. Environmental Protection Agency at more 

than 9 percent of nonreference sampling locations with 

exceedances measured at three sites (sites 12, 33, and 39). 

Organic contaminants exceeding aquatic life criteria included 

fluoranthene, phenanthrene, anthracene, benzo(a)anthracene, 

chrysene, benzo(a)pyrene, and pyrene. The most frequently 

detected organic compounds among bed sediment samples 

were pyrene, chrysene, and fluoranthene, which were detected 

at more than 45 percent of sites and reported at concentrations 

exceeding probable effect levels for the amphipod Hyalella 

azteca.

Overall, results of this investigation presented data on 

trace and major elements, SVOCs, OCs, and PCBs in bed 

sediments of selected streams collected at Fort Gordon, 

Georgia. Temporal evaluation of bed sediment constituents 

provided an assessment in number of detections and 

concentrations for bed sediment constituents associated with 

variation in potential sources, accumulation, and attenuation 

processes. Sediment-quality guidelines have helped to evaluate 

the potential adverse effects to aquatic life attributed to 

elevated trace elements, SVOC, OC, and PCB concentrations. 

Further investigation would be needed to determine the degree 

to which aquatic ecosystem health has been affected and to 

identify potential source areas of these contaminants so the 

appropriate corrective measures can be assessed.

Selected References

Adams, W.J., Kimerle, R.A., and Barnett, J.W., Jr., 1992, Sediment quality and aquatic life assessment: Environmental 

Science and Technology, v. 26, no. 10, p. 1865–1875.

Canadian Council of Ministers of the Environment, 2001, 

Canadian sediment quality guidelines for the protection of 

aquatic life—Introduction (updated), in Canadian environmental quality guidelines, 1999, Winnipeg, Canadian 

Council of Ministers of the Environment, 3 p.

Childress, C.J.O., Foreman, W.T., Connor, B.F., and Maloney, T.J., 1999, New reporting procedures based on longterm method detection levels and some considerations 

for interpretations of water-quality data provided by the 

U.S. Geological Survey National Water Quality Laboratory: 

U.S. Geological Survey Open-File Report 99–193, 19 p.

Clark, W.Z., Jr., and Zisa, A.C., 1976, Physiographic map of 

Georgia: Georgia Geologic Survey, scale 1:2,000,000.

Elrick, K.A., and Horowitz, A.J., 1986, Analysis of rocks and 

sediments for mercury, by wet digestion and flameless cold 

vapor atomic absorption: U.S. Geological Survey Open-File 

Report 86–529, 14 p.

Furlong, E.T., Vaught, D.G., Merten, L.M., Foreman, W.T., 

and Gates, P.M., 1996, Methods of analysis by the U.S. 

Geological Survey National Water Quality Laboratory—

Determination of semivolatile organic compounds in bottom 

sediment by solvent extraction, gel permeation chromatographic fractionation, and capillary-column gas chromatography/mass spectrometry: U.S. Geological Survey OpenFile Report 95–719, 67 p.

Georgia Department of Natural Resources, 1998, Rules of 

water quality control: Atlanta, Georgia Department of 

Natural Resources, Environmental Protection Division, 

chap. 391–3–6, 19 p.

Horowitz, A.J., and Elrick, K.A., 1985a, Multielement analysis of rocks and sediments by wet digestion and atomic 

absorption spectroscopy: U.S. Geological Survey Open-File 

Report 85–78, 17 p.

Horowitz, A.J., and Elrick, K.A., 1985b, Analysis of rocks 

and sediments for arsenic, antimony, and selenium, by wet 

digestion and hydride atomic absorption, U.S. Geological 

Survey Open-File Report 85–497, 12 p.

Horowitz, A.J., and Stephens, V.C., 2008, The effects of land 

use on fluvial sediment chemistry for the conterminous 

U.S.—Results from the first cycle of the NAWQA Program, 

Trace and major elements, phosphorus, carbon, and sulfur: 

Science of the Total Environment, v. 400, p. 290–314. 

Ingersol, C.G., MacDonald, D.D., Wand, N., Crane, J.L., 

Field, L.J., Haverland, P.S., Kemble, N.E., Lindskoog, R.A., 

Severn, C., and Smorong, D.E., 2000, Prediction of sediment toxicity using consensus-based freshwater sediment 

quality guidelines: U.S. Environmental Protection Agency, 

EPA 905/R-00/007, 33 p.

McConnell, J.B., Stamey, T.C., Persinger, H.H., and McFadden, K.W., 2000, Trace elements and semivolatile organic 

compounds in bed sediments from streams and impoundments at Fort Gordon, Georgia: U.S. Geological Survey 

Open-File Report 00–87, 39 p. [with insert of organic 

compounds data].

Mueller, D.K., Martin, J.D., and Lopes, T.J., 1997, Qualitycontrol design for surface-water sampling in the National 

Water-Quality Assessment Program: U.S. Geological Survey Open-File Report 97–223, 17 p.

National Oceanic and Atmospheric Administration, 2010, 

National Environmental Satellite, Data and Information 

Service, National Climatic Data Center, at http://www.ncdc.

noaa.gov/oa/climate/online/ccd/nrmlprcp.html. 
30 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Noriega, M.C., Wydoski, D.S., and Foreman, W.T., 2004, 

Methods of analysis by the U.S. Geological Survey National 

Water Quality Laboratory—Determination of organochlorine pesticides and polychlorinated biphenyls in bottom and 

suspended sediment by gas chromatography with electroncapture detection: U.S. Geological Survey Water-Resources 

Investigations Report 03–4293, 46 p.

Olson, M.C., Iverson, J.L., Furlong, E.T., and Schroeder, M.P., 

2004, Methods of analysis by the U.S. Geological Survey 

National Water Quality Laboratory—Determination of 

polycyclic aromatic hydrocarbon compounds in sediment 

by gas chromatography/mass spectrometry: U.S. Geological 

Survey Water-Resources Investigations Report 03–4318, 

45 p.

Ontario Ministry of the Environment, 1997, Guidelines for 

use at contaminated sites in Ontario, appendix 2 (revised 

in 1998), table E, Sediment Quality Criteria, accessed 

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Persaud, D., Jaagumagi, R., and Hayton, A., 1993, Guidelines 

for the protection and management of aquatic sediment 

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Data on surface-water, streambed-interstitial water, 

and bed-sediment quality for selected locations in the 

small arms impact area of central Fort Gordon, Georgia, 

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Table 6 31

Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.[QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site 

number

(fig. 1)

Station number Station name Date Time (EST)

QA/QC surrogate values, as percent recovery (%)

 2-Fluorobiphenyl, 

surrogate, 

bs<2 mm

alpha-HCH-d6, 

surrogate, bs

Isodrin, 

surrogate, 

bs

Nitrobenzened5, surrogate, 

bs<2 mm

1 02196843 Butler Creek tributary above Boardmans Pond at Fort Gordon, GA 3/17/10 1330 62.0 71.3 70.7 54.0

2 02196842 Soil Erosion Lake at Fort Gordon, GA 3/16/10 1330 40.9 89.9 72.3 32.3

4 02196823 Butler Creek tributary (Beaver Pond) at Fort Gordon, GA 2/3/10 1130 95.9 60.8 72.8 72.3

9 021970190 Gordon Lake at Fort Gordon, GA 3/17/10 0830 73.2 73.2 59.5 60.2

10 021970180 Mirror Lake at Fort Gordon, GA 3/17/10 1200 53.0 73.0 66.8 46.8

12 021970168 Spirit Creek tributary near headwaters at Fort Gordon, GA 2/17/10 1400 68.3 72.5 71.4 58.8

13 021970165 Spirit Creek above Gordon Lake at Fort Gordon, GA 2/3/10 1600 117 59.7 70.2 91.7

17 021970140 McCoy Creek above Signal Lake at Fort Gordon, GA 2/17/10 1415 34.0 84.8 65.1 25.3

18 021970136 Marcum Branch below Maxwell dam at Fort Gordon, GA 2/3/10 1400 98.1 64.1 69.4 76.6

30 021970130 North Fork Spirit Creek at Fort Gordon, GA 2/2/10 1500 61.7 17.7 71.9 44.5

31 332505082111300 BS-31 Fort Gordon, GA 2/2/10 1330 32.0 62.0 80.0 29.9

32 332436082111200 BS-32 Fort Gordon, GA 2/9/10 1415 24.3 81.5 72.3 17.3

33 021970158 McCoy Creek below Signal Lake at Fort Gordon, GA 2/3/10 1220 74.7 65.2 73.8 49.5

35 21970175 Spirit Creek tributary above Mirror Lake at Fort Gordon, GA 2/9/10 1230 58.0 77.2 77.8 54.2

37 332502082100200 BS-37 Fort Gordon, GA 2/9/10 1045 63.8 70.3 73.6 61.1

38 332552082091300 BS-38 Fort Gordon, GA 2/3/10 0930 101 60.5 74.9 78.5

39 02196825 Butler Creek tributary at Willard Trail at Fort Gordon, GA 2/3/10 1005 79.5 60.0 65.4 59.6

41 331840082164000 BS-41 Fort Gordon, GA 2/18/10 1245 63.9 117 71.3 54.7

42 331928082144000 BS-42 Fort Gordon, GA 2/10/10 1030 67.2 83.4 86.9 67.9

43 02197557 Brier Creek at U.S. Route 1 near Wrens, GA 3/16/10 1030 59.1 103 61.4 45.3

45 02197023 South Prong Creek above Ellis Pond at Fort Gordon, GA 2/10/10 0915 65.0 78.7 76.7 61.9

46 332116082145100 BS-46 Fort Gordon, GA 2/4/10 0925 72.1 59.8 73.4 53.2

47 332351082102700 BS-47 Fort Gordon, GA 2/3/10 1430 72.4 58.5 63.1 58.6

48 332446082094200 BS-48 Fort Gordon, GA 2/17/10 1115 62.9 113 72.4 60.6

49 331946082172000 BS-49 Fort Gordon, GA 2/18/10 1215 32.0 82.9 79.2 26.4

50 332038082183400 BS-50 Fort Gordon, GA 2/18/10 1000 23.0 83.2 87.1 16.1

51 331749082193600 BS-51 Fort Gordon, GA 2/18/10 1500 50.2 100 70.9 34.8

52 331709082195600 BS-52 Fort Gordon, GA 2/10/10 1500 72.9 81.0 94.2 72.8

53 331932082205000 BS-53 Fort Gordon, GA 2/18/10 1100 58.3 107 94.5 54.0

54 331754082151600 Sandy Run Creek at South Post Border, Fort Gordon, GA 4/13/10 1200 56.3 75.1 63.2 44.4

56 332208082103900 South Prong Creek below Range 14, Fort Gordon, GA 4/14/10 1200 59.2 74.7 60.1 51.9

57 332221082115700 Unnamed Creek East of Range 8, Fort Gordon, GA 4/14/10 0900 55.8 67.3 47.9 49.6

Ref- 1 02197554 Brier Creek at U.S. Route 221 near Wrens, GA 2/11/10 0900 68.5 76.4 76.9 67.2

Ref- 2 02197558 Boggy Gut Creek at U.S. Route 221 near Harlem, GA 2/11/10 1200 56.6 54.6 65.6 52.8

Ref- 3A 332321082152300 Ref-3A Fort Gordon, GA 2/4/10 0930 --- 64.5 77.0 ---
32 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site 

number

(fig. 1)

Date

QA/QC surrogate values, 

as percent recovery (%) Semivolatile organic compounds (micrograms per kilograms)

Nonachlorobiphenyl, 

surrogate, bs

 p-Terphenyld14, surrogate, 

bs<2mm

 1,4-Dichlorobenzene, 

bs< 2mm

2,4,6-Trichlorophenol, 

bs< 2 mm

 2,4-Dichlorophenol, 

bs<2mm

2-Methyl-4,6-dinitrophenol, 

bs<2mm

4-Chloro3-methylphenol, bs<2mm C8-Alkylphe- nol, bs<2mm Pentachlo- rophenol, bs<2mm 2,4,6-Trimeth- ylphenol, bs<2mm 2,4-Dini- trophenol, bs<2mm

1 3/17/10 99.4 92.2 <170 <170 <170 --- <170 <170 <170 <170 ---

2 3/16/10 99.3 74.5 --- <60.0 <60.0 --- <60.0 <60.0 <60.0 --- ---4 2/3/10 84.1 --- <50.0 <50.0 <50.0 --- <50.0 <50.0 <80.0 <50.0 ---9 3/17/10 107 106 <150 <150 <150 --- <150 <150 <150 <150 ---

10 3/17/10 98.9 94.5 <75.0 <75.0 <75.0 --- <75.0 <75.0 <75.0 <75.0 ---12 2/17/10 68.8 89.9 <50.0 <50.0 <50.0 --- <50.0 <50.0 --- <50.0 ---13 2/3/10 77.8 --- <60.0 <60.0 <60.0 --- <60.0 E14.8 <100 <60.0 ---17 2/17/10 113 81.0 --- <50.0 <50.0 --- <50.0 <50.0 E39.7 --- ---18 2/3/10 82.4 --- <60.0 <60.0 <60.0 --- <60.0 <60.0 <80.0 <60.0 ---30 2/2/10 78.6 --- <50.0 <50.0 <50.0 --- <50.0 <50.0 <50.0 <50.0 ---31 2/2/10 72.8 39.0 <50.0 <50.0 <50.0 --- <50.0 <50.0 <50.0 <50.0 ---32 2/9/10 108 82.7 --- <50.0 <50.0 --- <50.0 <50.0 <50.0 --- ---33 2/3/10 79.7 --- <50.0 <50.0 <50.0 --- <50.0 <50.0 <50.0 <50.0 ---35 2/9/10 71.8 84.6 <50.0 <50.0 <50.0 --- <50.0 <50.0 --- <50.0 ---37 2/9/10 68.2 84.2 <50.0 <50.0 <50.0 --- <50.0 <50.0 --- <50.0 ---38 2/3/10 87.6 --- <55.0 <55.0 <55.0 --- <55.0 <55.0 <100 <55.0 ---

39 2/3/10 68.9 --- <55.0 <55.0 <55.0 --- <55.0 <55.0 E116 <55.0 ---

41 2/18/10 131 77.9 --- <145 <145 --- <145 <145 E63.0 --- ---42 2/10/10 77.3 83.2 <50.0 <50.0 <50.0 --- <50.0 <50.0 --- <50.0 ---43 3/16/10 108 79.8 --- <85.0 <85.0 --- <85.0 <85.0 <85.0 --- ---45 2/10/10 69.4 83.9 <50.0 <50.0 <50.0 --- <50.0 <50.0 --- <50.0 ---46 2/4/10 80.8 --- <55.0 <55.0 <55.0 --- <55.0 <55.0 <55.0 <55.0 ---47 2/3/10 66.1 --- <55.0 <55.0 <55.0 --- <55.0 <55.0 <55.0 <55.0 ---48 2/17/10 111 85.2 --- <75.0 <75.0 --- <75.0 <75.0 E101 --- ---49 2/18/10 131 81.7 --- <55.0 <55.0 --- <55.0 <55.0 <55.0 --- ---50 2/18/10 127 80.6 --- <50.0 <50.0 --- <50.0 <50.0 <50.0 --- ---51 2/18/10 117 75.9 --- <90.0 <90.0 --- <90.0 <90.0 <90.0 --- ---52 2/10/10 89.4 90.0 <50.0 <50.0 <50.0 --- <50.0 <50.0 --- <50.0 ---53 2/18/10 129 75.0 --- <125 <125 --- <125 <125 <125 --- ---54 4/13/10 108 101 <90.3 <90.3 <90.3 --- <90.3 <90.3 <90.3 <90.3 ---56 4/14/10 88.4 116 <100 <100 <100 --- <100 <100 <100 <100 ---57 4/14/10 83.3 79.3 <175 <175 <175 --- <175 <175 <175 <175 ---

Ref- 1 2/11/10 72.5 90.5 <55.0 <55.0 <55.0 --- <55.0 <55.0 --- <55.0 ---Ref- 2 2/11/10 62.1 71.3 <90.0 <90.0 <90.0 --- <90.0 <90.0 E16.5 <90.0 ---Ref- 3A 2/4/10 93.2 --- --- --- --- --- --- --- --- --- ---
Table 6 33

Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site 

number

(fig. 1)

Date

Semivolatile organic compounds (micrograms per kilogram)

2-Nitrophenol, bs<2mm

3,5-Dimethylphenol, 

bs<2mm

 3-Nitrophenol, 

bs<2mm

 2-Chlorophenol, bs<2mm Phenol, bs<2mm Azoben- zene, bs<2mm Carbazole, bs<2mm Hexachlo- robenzene, bs<2mm Hexachloro- benzene, bs p-Cresol, bs<2mm Pentachlo- roanisole, bs<2mm

1 3/17/10 <170 <170 --- <170 <170 <170 E26.3 <170 <9.00 998 <170

2 3/16/10 <60.0 <60.0 --- <60.0 <60.0 <60.0 E2.62 <60.0 <3.00 <60.0 <60.0

4 2/3/10 <50.0 <50.0 <50.0 <50.0 E6.66 <50.0 E19.4 <50.0 <3.00 <50.0 <50.0

9 3/17/10 <150 <150 --- <150 E65.7 <150 <150 <150 <9.00 2,680 <150

10 3/17/10 <75.0 <750 --- <75.0 <75.0 <75.0 E11.2 <75.0 <3.00 E35.0 <75.0

12 2/17/10 --- <50.0 --- <50.0 E6.93 <50.0 352 <50.0 <3.00 E14.4 <50.0

13 2/3/10 <60.0 <60.0 <60.0 <60.0 E39.3 <60.0 E33.5 <60.0 <3.00 72.9 <60.0

17 2/17/10 <50.0 <50.0 --- <50.0 <50.0 <50.0 <50.0 <50.0 <3.00 E0.86 <50.0

18 2/3/10 <60.0 <60.0 <60.0 <60.0 E8.75 <60.0 E8.31 <60.0 <3.00 E10.6 <60.0

30 2/2/10 <50.0 <50.0 <50.0 <50.0 E4.61 <50.0 E2.88 <50.0 <3.00 <50.0 <50.0

31 2/2/10 <50.0 <50.0 <50.0 <50.0 <50.0 E2.73 <50.0 <3.00 <50.0 <50.0

32 2/9/10 <50.0 <50.0 --- <50.0 <50.0 <50.0 E1.86 <50.0 <3.00 <50.0 <50.0

33 2/3/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 E34.0 <50.0 <3.00 <50.0 <50.0

35 2/9/10 --- <50.0 --- <50.0 <50.0 <50.0 E5.31 <50.0 <3.00 <50.0 <50.0

37 2/9/10 --- <50.0 --- <50.0 E3.03 <50.0 E7.93 <50.0 <3.00 <50.0 <50.0

38 2/3/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <3.00 <55.0 <55.0

39 2/3/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 547 <55.0 <3.00 <55.0 <55.0

41 2/18/10 <145 <145 --- <145 <145 <145 E15.9 <145 <9.00 E34.8 <145

42 2/10/10 --- <50.0 --- <50.0 E3.23 <50.0 <50.0 <50.0 <3.00 <50.0 <50.0

43 3/16/10 <85.0 <85.0 --- <85.0 E21.9 <85.0 <85.0 <85.0 <3.00 E31.9 <85.0

45 2/10/10 --- <50.0 --- <50.0 <50.0 <50.0 <50.0 <50.0 <3.00 <50.0 <50.0

46 2/4/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 E2.51 <55.0 <3.00 <55.0 <55.0

47 2/3/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 E2.61 <55.0 <3.00 <55.0 <55.0

48 2/17/10 <75.0 <75.0 --- <75.0 E28.5 <75.0 E22.4 <75.0 <3.00 E66.3 <75.0

49 2/18/10 <55.0 <55.0 --- <55.0 <55.0 <55.0 <55.0 <55.0 <3.00 E0.94 <55.0

50 2/18/10 <50.0 <50.0 --- <50.0 <50.0 <50.0 <50.0 <50.0 <3.00 <50.0 <50.0

51 2/18/10 <90.0 <90.0 --- <90.0 <90.0 <90.0 <90.0 <90.0 <3.00 E6.05 <90.0

52 2/10/10 --- <50.0 --- <50.0 <50.0 <50.0 <50.0 <50.0 <3.00 <50.0 <50.0

53 2/18/10 <125 <125 --- <125 <125 <125 <125 <125 <7.50 E20.9 <125

54 4/13/10 <90.3 <90.3 --- <90.3 <90.3 <90.3 E9.66 <90.3 <3.00 337 <90.3

56 4/14/10 <100 <100 --- <100 <100 <100 <100 <100 <6.00 E94.4 <100

57 4/14/10 <175 <175 --- <175 <175 <175 <175 <175 <10.5 1,060 <175

Ref- 1 2/11/10 --- <55.0 --- <55.0 <55.0 <55.0 <55.0 <55.0 <3.00 <55.0 <55.0

Ref- 2 2/11/10 --- <90.0 --- <90.0 E17.0 <90.0 <90.0 <90.0 <3.00 <90.0 <90.0

Ref- 3A 2/4/10 --- --- --- --- --- --- --- --- <15.0 --- ---
34 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site 

number

(fig. 1)

Date

Semivolatile organic compounds (micrograms per kilogram)

Pentachloronitrobenzene, 

bs<2mm

1,2,4-Trichlorobenzene, 

bs<2mm

1,2-Dichlorobenzene, 

bs<2mm

 1,2-Dimethylnaphthalene, 

bs<2mm

 1,3-Dichlorobenzene, 

bs<2mm

1,6-Dimethylnaphthalene, 

bs<2mm

 1-Methyl-9Hfluorene, 

bs<2mm

 1-Methylphenanthrene, 

bs<2mm

 1-Methylpyrene, 

bs<2mm

 2,2’-Biquinoline, 

bs<2mm

2,3,6-Trimethylnaphthalene, 

bs<2mm

1 3/17/10 <170 <170 <170 <170 <170 E22.3 <170 <170 <170 <170 <170

2 3/16/10 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 E1.14 <60.0 <60.0 <60.0

4 2/3/10 <50.0 <50.0 <50.0 E3.38 <50.0 E8.85 E3.39 E11.4 E10.1 <50.0 E5.01

9 3/17/10 <150 <150 <150 <150 <150 E23.5 <150 <150 <150 <150 <150

10 3/17/10 <75.0 <75.0 <75.0 <75.0 <75.0 E5.52 <75.0 E13.8 <75.0 <75.0 <75.0

12 2/17/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 E4.88 87.3 88.7 <50.0 E1.98

13 2/3/10 <60.0 <60.0 <60.0 <60.0 <60.0 E9.85 <60.0 <60.0 E14.2 <60.0 <60.0

17 2/17/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 E0.65 <50.0 E11.7 <50.0

18 2/3/10 <60.0 <60.0 <60.0 E7.61 <60.0 E19.9 E5.98 <60.0 E9.04 <60.0 E11.7

30 2/2/10 <50.0 <50.0 <50.0 E5.81 <50.0 E17.8 E4.08 E13.0 E7.29 <50.0 E8.82

31 2/2/10 <50.0 <50.0 <50.0 E1.89 <50.0 E5.67 <50.0 E3.86 E2.37 <50.0 E2.54

32 2/9/10 <50.0 <50.0 <50.0 <50.0 <50.0 E0.68 <50.0 E1.43 <50.0 E21.9 <50.0

33 2/3/10 <50.0 <50.0 <50.0 <50.0 <50.0 E2.30 <50.0 E10.0 E13.0 <50.0 <50.0

35 2/9/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 E1.88 E1.77 <50.0 E0.91

37 2/9/10 <50.0 <50.0 <50.0 <50.0 <50.0 E1.83 <50.0 E2.71 E2.87 <50.0 E1.06

38 2/3/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0

39 2/3/10 <55.0 <55.0 <55.0 <55.0 <55.0 E2.98 E12.4 152 167 <55.0 E3.74

41 2/18/10 <145 <145 <145 <145 <145 <145 <145 <145 <145 <145 <145

42 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

43 3/16/10 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0

45 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

46 2/4/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0

47 2/3/10 <55.0 <55.0 <55.0 E0.87 <55.0 E3.27 E1.24 E3.36 E2.90 <55.0 E1.60

48 2/17/10 <75.0 <75.0 <75.0 <75.0 <75.0 E4.99 <75.0 <75.0 E11.4 <75.0 <75.0

49 2/18/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0

50 2/18/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

51 2/18/10 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0

52 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

53 2/18/10 <125 <125 <125 <125 <125 <125 <125 <125 <125 <125 <125

54 4/13/10 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3

56 4/14/10 <100 <100 <100 <100 <100 E13.1 <100 <100 <100 <100 <100

57 4/14/10 <175 <175 <175 <175 <175 E18.1 <175 <175 <175 <175 <175

Ref- 1 2/11/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0

Ref- 2 2/11/10 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0

Ref- 3A 2/4/10 --- --- --- --- --- --- --- --- --- --- ---
Table 6 35

Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site 

number

(fig. 1)

Date

Semivolatile organic compounds (micrograms per kilogram)

2,4-Dinitrotoluene, 

bs<2mm

 2,6-Dimethylnaphthalene, 

bs<2mm

2,6-Dinitrotoluene, 

bs<2mm

2-Chloronaphthalene, 

bs<2mm

 2-Ethylnaphthalene, bs<2mm

2-Methylanthracene, 

bs<2mm

4-Bromophenyl phenyl 

ether, bs<2mm

 4-Chlorophenyl 

phenyl ether, 

bs<2mm

 4HCyclopenta[def]

phenanthrene, 

bs<2mm

 9,10-Anthraquinone, 

bs<2mm

 9HFluorene, 

bs<2mm

1 3/17/10 <170 <170 <220 <170 <170 <170 <170 <170 <170 E101 <170

2 3/16/10 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 E1.62 E10.4 <60.0

4 2/3/10 <50.0 E8.44 <50.0 <50.0 E4.22 E6.10 <50.0 <50.0 E10.5 66.2 E6.92

9 3/17/10 <150 E131 <150 <150 <150 <150 <150 <150 <150 <150 <150

10 3/17/10 <75.0 E5.81 <75.0 <75.0 <75.0 <75.0 <75.0 <75.0 E6.22 E43.1 <75.0

12 2/17/10 <50.0 E1.74 <50.0 <50.0 <50.0 E20.8 <50.0 <50.0 160 804 E28.5

13 2/3/10 <60.0 E10.4 <60.0 <60.0 E4.54 <60.0 <60.0 <60.0 E16.2 127 E6.82

17 2/17/10 <50.0 E0.92 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

18 2/3/10 <60.0 E20.8 <60.0 <60.0 E8.77 <60.0 <60.0 <60.0 <60.0 <60.0 E4.98

30 2/2/10 <50.0 E13.4 <50.0 <50.0 E6.28 E3.29 <50.0 <50.0 <50.0 <50.0 <50.0

31 2/2/10 <50.0 E4.76 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 E1.70 <50.0 <50.0

32 2/9/10 <50.0 E0.59 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 E1.60 E6.39 E0.87

33 2/3/10 <50.0 E2.30 <50.0 <50.0 E1.10 E5.40 <50.0 <50.0 E19.0 96.0 E6.40

35 2/9/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 E3.65 E15.5 E1.49

37 2/9/10 <50.0 E1.68 <50.0 <50.0 E1.00 <50.0 <50.0 <50.0 E4.63 E17.4 E1.34

38 2/3/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0

39 2/3/10 <55.0 E3.48 <55.0 <55.0 <55.0 E34.1 <55.0 <55.0 273 1,240 E72.7

41 2/18/10 <145 <145 <145 <145 <145 <145 <145 <145 <145 <145 <145

42 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

43 3/16/10 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0

45 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

46 2/4/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 E2.41 E9.45 E2.40

47 2/3/10 <55.0 E3.03 <55.0 <55.0 E1.33 E2.60 <55.0 <55.0 E6.13 E15.5 E8.57

48 2/17/10 <75.0 E13.0 <75.0 <75.0 <75.0 <75.0 <75.0 <75.0 <75.0 90.6 <75.0

49 2/18/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0

50 2/18/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

51 2/18/10 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0

52 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

53 2/18/10 <125 <125 <125 <125 <125 <125 <125 <125 <125 <125 <125

54 4/13/10 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3

56 4/14/10 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100

57 4/14/10 <175 E37.0 <175 <175 <175 <175 <175 <175 <175 <175 <175

Ref- 1 2/11/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0

Ref- 2 2/11/10 <90.0 <90.0 <265 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0

Ref- 3A 2/4/10 --- --- --- --- --- --- --- --- --- --- ---
36 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site 

number

(fig. 1)

Date

Semivolatile organic compounds (micrograms per kilogram)

 Acenaphthene, 

bs<2mm

 Acenaphthylene, 

bs<2mm

 Acridine, 

bs<2mm

Anthracene, 

bs<2mm

 Benzo[a]

anthracene, 

bs<2mm

Benzo[a]

pyrene, 

bs<2mm

Benzo[b]

fluoranthene, 

bs<2mm

 Benzo[c]

cinnoline, 

bs<2mm

Benzo[ghi]

perylene, 

bs<2mm

Benzo[k]

fluoranthene, 

bs<2mm

Bis(2-chloroethoxy)

methane, 

bs<2mm

1 3/17/10 <170 <170 E46.4 E18.5 <170 E82.2 E157 <170 <170 <170 <170

2 3/16/10 <60.0 <60.0 <60.0 E1.16 E5.61 E8.38 E13.7 <60.0 E32.0 E7.17 <60.0

4 2/3/10 E4.47 E3.86 E15.9 E13.0 E40.3 66.1 119 <50.0 E22.4 E42.2 <50.0

9 3/17/10 <150 E14.2 E92.1 E25.2 E43.2 E60.2 <120 <150 <150 E48.5 <150

10 3/17/10 <75.0 E4.57 <75.0 E6.79 E21.0 E35.5 E63.5 <75.0 E33.8 E24.9 <75.0

12 2/17/10 E15.3 E9.57 263 120 1,100 1,170 2,230 <50.0 E508 E1,200 <50.0

13 2/3/10 E3.06 E7.46 E28.9 E19.4 82.0 133 251 <60.0 E41.0 93.5 <60.0

17 2/17/10 <50.0 <50.0 <50.0 E1.02 <50.0 E3.16 E3.90 <50.0 <50.0 E1.86 <50.0

18 2/3/10 E1.62 E4.31 <60.0 E6.72 E15.2 E23.0 E45.4 <60.0 E8.60 E16.4 <60.0

30 2/2/10 <50.0 E3.60 <50.0 E3.75 E12.8 E14.4 E36.0 <50.0 E4.61 E15.2 <50.0

31 2/2/10 <50.0 <50.0 <50.0 E2.23 E10.7 E10.1 E13.4 <50.0 E9.31 E4.46 <50.0

32 2/9/10 E0.55 <50.0 E1.62 E1.53 E8.46 E8.77 E9.70 <50.0 E19.2 E5.02 <50.0

33 2/3/10 E3.60 E3.00 E30.0 E17.0 130 170 270 <50.0 E130 100 <50.0

35 2/9/10 E0.96 E0.68 E4.97 E3.30 E20.2 E26.5 E54.0 <50.0 E16.2 E22.0 <50.0

37 2/9/10 E0.66 E0.70 E8.15 E2.97 E35.4 E43.7 72.4 <50.0 E27.8 E28.3 <50.0

38 2/3/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 E7.62 <55.0 <55.0 <55.0 <55.0

39 2/3/10 E46.7 E25.0 454 183 1,810 2,190 4,630 <55.0 E1,020 1,470 <55.0

41 2/18/10 <145 <145 E18.9 E4.26 E14.8 <145 E22.4 <145 <145 <145 <145

42 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

43 3/16/10 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0 <85.0

45 2/10/10 <50.0 E2.87 <50.0 E1.56 <50.0 E3.72 E4.77 <50.0 E2.27 E1.72 <50.0

46 2/4/10 E1.22 E1.49 <55.0 E4.22 <55.0 E8.93 E9.88 <55.0 <55.0 E4.95 <55.0

47 2/3/10 E4.69 E2.37 <55.0 E7.38 <55.0 E11.3 E21.7 <55.0 E3.39 E9.59 <55.0

48 2/17/10 <75.0 E23.2 <75.0 E21.9 E75.0 97.3 176 <75.0 E158 76.2 <75.0

49 2/18/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0

50 2/18/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

51 2/18/10 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0

52 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

53 2/18/10 <125 <125 <125 <125 E7.19 <125 <125 <125 <125 <125 <125

54 4/13/10 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3 <90.3

56 4/14/10 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100

57 4/14/10 <175 <175 <175 <175 <175 <175 <175 <175 <175 <175 <175

Ref- 1 2/11/10 <55.0 <55.0 <55.0 <55.0 <55.0 <55.0 E2.40 <55.0 <55.0 <55.0 <55.0

Ref- 2 2/11/10 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0 <90.0

Ref- 3A 2/4/10 --- --- --- --- --- --- --- --- --- --- ---
Table 6 37

Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site 

number

(fig. 1)

Date

Semivolatile organic compounds (micrograms per kilogram)

 Chrysene, 

bs<2mm

Dibenzo[a,h]

anthracene, 

bs<2mm

 Dibenzothiophene, 

bs<2mm

Fluoranthene, 

bs<2mm

Hexachlorobutadiene, 

bs<2mm

Hexachlorocyclopentadiene, 

bs<2mm

Hexachloroethane, 

bs<2mm

Indeno[1,2,3-

cd]pyrene, 

bs<2mm

 Isophorone, 

bs<2mm

Isoquinoline, 

bs<2mm

Naphthalene, 

bs<2mm

1 3/17/10 E96.8 <170 <170 187 <170 --- --- <170 <170 <170 <1702 3/16/10 E9.37 <60 <60.0 E14.4 <60.0 <180 <180 E35.0 <60.0 <60.0 <60.0

4 2/3/10 69.6 <50.0 E6.04 148 <50.0 --- <50.0 E25.8 <50.0 <50.0 E7.109 3/17/10 E49.8 <150 <150 E124 <150 --- --- <150 E32.0 <150 E7.26

10 3/17/10 E38.7 <75.0 <75.0 76.9 <75.0 --- --- E42.2 <75.0 <75.0 E6.2612 2/17/10 18,500 E210 65.5 3,480 <50.0 --- --- E657 <50.0 <50.0 E6.22

13 2/3/10 148 E16.3 E8.16 312 <60.0 --- <60.0 E50.3 <60.0 <60.0 E7.99

17 2/17/10 E2.75 <50.0 <50.0 E4.49 <50.0 <150 <150 E14.4 <50.0 <50.0 <50.0

18 2/3/10 E23.8 <60.0 E3.94 E44.8 <60.0 --- <60.0 E8.77 <60.0 <60.0 E13.4

30 2/2/10 E19.5 <50.0 E2.52 E21.2 <50.0 --- <50.0 E4.96 <50.0 <50.0 E12.1

31 2/2/10 E8.90 <50.0 <50.0 E23.0 <50.0 --- --- <50.0 <50.0 <50.0 E7.9932 2/9/10 E11.5 <50.0 E0.81 E24.0 <50.0 <150 <150 E19.1 <50.0 E3.23 <50.0

33 2/3/10 200 E35.0 E7.90 360 <50.0 --- <50 E120 <50.0 <50.0 E2.4035 2/9/10 E41.0 E5.06 E1.69 75.9 <50.0 --- --- E19.4 <50.0 <50.0 <50.0

37 2/9/10 52.4 E8.43 E1.66 103 <50.0 --- --- E30.0 <50.0 <50.0 E2.19

38 2/3/10 <55.0 <55.0 <55.0 E8.32 <55.0 --- <55.0 <55.0 <55.0 <55.0 <55.0

39 2/3/10 3,070 <300 130 6,040 --- <55.0 <55.0 E1,110 <55.0 <55.0 E9.71

41 2/18/10 E17.5 <145 <145 E32.9 <145 <435 <435 <145 <145 E42.1 E4.4442 2/10/10 <50.0 <50.0 <50.0 E0.88 <50.0 --- --- <50.0 <50.0 <50.0 <50.0

43 3/16/10 <85.0 <85.0 <85.0 <85.0 <85.0 <270 <270 <85.0 <85.0 <85.0 <85.0

45 2/10/10 E2.55 <50.0 <50.0 E2.81 <50.0 --- --- <50.0 <50.0 <50.0 E1.05

46 2/4/10 E5.07 <55.0 E1.30 E18.3 --- <55.0 <55.0 <55.0 <55.0 <55.0 <55.0

47 2/3/10 E10.0 <55.0 E3.88 E47.4 <55.0 --- <55.0 <55.0 <55.0 <55.0 <55.0

48 2/17/10 134 <75.0 E5.89 231 <75.0 <225 <225 E165 <75.0 E4.97 E5.5449 2/18/10 E0.91 <55.0 <55.0 E1.82 <55.0 <150 <150 <55.0 <55.0 <55.0 <55.0

50 2/18/10 <50.0 <50.0 <50.0 E0.64 <50.0 <150 <150 <50.0 <50.0 <50.0 <50.051 2/18/10 <90.0 <90.0 <90.0 E3.33 <90.0 <270 <270 <90.0 <90.0 <90.0 <90.0

52 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 --- --- <50.0 <50.0 <50.0 <50.0

53 2/18/10 E5.76 <125 <125 E6.38 <125 <270 <270 <125 <125 <125 <125

54 4/13/10 <90.3 <90.3 <90.3 <90.3 <90.3 --- --- <90.3 <90.3 <90.3 <90.3

56 4/14/10 <100 <100 <100 E9.04 <100 --- --- <100 <100 <100 <100

57 4/14/10 <175 <175 <175 <175 <175 <175 <175 <175 <175 <175 <175

Ref- 1 2/11/10 E0.83 <55.0 <55.0 E1.89 <55.0 --- --- <55.0 <55.0 <55.0 <55.0

Ref- 2 2/11/10 <90.0 <90.0 <90.0 E3.74 <90.0 --- --- <90.0 <90.0 <90.0 <90.0

Ref- 3A 2/4/10 --- --- --- --- --- --- --- --- --- --- ---
38 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon

Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site 

number

(fig. 1)

Date

Semivolatile organic compounds (micrograms per kilogram)

 Nitrobenzene, 

bs<2mm

N-Nitrosodin-propylamine, 

bs<2mm

NNitrosodiphenylamine, 

bs<2mm

Phenanthrene, 

bs<2mm

Phenanthridine, 

bs<2mm

Pyrene, 

bs<2mm

Quinoline, 

bs<2mm

Bis(2-chloroethyl) ether, 

bs<2mm

 Bis(2-chloroisopropyl) 

ether, bs<2mm

 Bis(2-ethylhexyl) phthalate, bs<2mm Benzyl n-bu- tyl phthalate, bs<2mm

1 3/17/10 <170 <170 <170 E75.7 <170 E125 <170 <170 <170 E448 <205

2 3/16/10 <60.0 <60.0 <60.0 E4.75 <60.0 E10.3 <60.0 <60.0 <60.0 E242 <85.0

4 2/3/10 <50.0 <50.0 <50.0 72.0 E6.61 114 <50.0 <50.0 <50.0 213 <60.0

9 3/17/10 <150 <150 <150 E58.7 <150 E102 <150 <150 <150 4,780 <340

10 3/17/10 <75.0 <75.0 <75.0 E36.8 <75.0 E56.4 <75.0 <75.0 <75.0 E149 <90.1

12 2/17/10 <50.0 <50.0 <50.0 1,020 73.8 2,550 E4.42 <50.0 <50.0 173 <75.0

13 2/3/10 <60.0 <60.0 E4.62 110 E11.4 241 <60.0 <60.0 <60.0 861 E202

17 2/17/10 <50.0 <50.0 <50.0 E1.81 <50.0 E4.57 <50.0 <50.0 <50.0 <50.0 <50.0

18 2/3/10 <60.0 <60.0 <60.0 E35.5 <60.0 E36.1 <60.0 229 <60.0 E107 <90.0

30 2/2/10 <50.0 <50.0 <50.0 E24.8 <50.0 E22.6 <50.0 <50.0 <50.0 1,340 311

31 2/2/10 <50.0 <50.0 <50.0 E15.6 <50.0 E18.2 <50.0 <50.0 <50.0 <50.0 <70.2

32 2/9/10 <50.0 <50.0 <50.0 E13.5 <50.0 E17.3 <50.0 <50.0 <50.0 <50.0 <50.0

33 2/3/10 <50.0 <50.0 <50.0 120 E11.0 270 <50.0 <50.0 <50.0 <60.0 <75.0

35 2/9/10 <50.0 <50.0 <50.0 E28.3 <50.0 56.2 <50.0 <50.0 <50.0 130 <75.0

37 2/9/10 <50.0 <50.0 <50.0 E28.2 E2.96 79.9 <50.0 <50.0 <50.0 <50.0 <50.0

38 2/3/10 <55.0 <55.0 <55.0 E3.46 <55.0 E6.11 <55.0 <55.0 <55.0 E154 <90.0

39 2/3/10 <55.0 <55.0 <55.0 1,970 127 4,590 <55.0 <200 <55.0 E113 <110

41 2/18/10 <145 <145 <145 <145 <145 E24.0 <145 <145 <145 <145 <195

42 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 E0.92 <50.0 <50.0 <50.0 <50.0 <50.0

43 3/16/10 <85.0 <85.0 <85.0 <85.0 <85.0 E5.95 <85.0 <85.0 <85.0 E189 <135

45 2/10/10 <50.0 <50.0 <50.0 E2.14 <50.0 E4.33 <50.0 <50.0 <50.0 <50.0 <65.0

46 2/4/10 <55.0 <55.0 <55.0 E12.1 <55.0 E14.9 <55.0 <55.0 <55.0 <55.0 <65.0

47 2/3/10 <55.0 <55.0 <55.0 E39.1 <55.0 E33.2 <55.0 <55.0 <55.0 <55.0 <55.0

48 2/17/10 <75.0 <75.0 E16.3 85.3 E7.09 185 <75.0 <75.0 <75.0 E522 <230

49 2/18/10 <55.0 <55.0 <55.0 <55.0 <55.0 E1.81 <55.0 <55.0 <55.0 <55.0 <75.0

50 2/18/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <55.0

51 2/18/10 <90.0 <90.0 <90.0 <90.0 <90.0 E3.02 <90.0 <90.0 <90.0 629 <90.0

52 2/10/10 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0

53 2/18/10 <125 <125 <125 <125 <125 E4.32 <125 <125 <125 <120 <160

54 4/13/10 <90.3 <90.3 E12.4 <90.3 <90.3 <90.3 <90.3 <95.0 <90.3 <120 <130

56 4/14/10 <100 <100 <100 <100 <100 E6.16 <100 <160 <100 <100 <140

57 4/14/10 <175 <175 <175 <175 <175 <175 <175 <175 <175 <175 <175

Ref- 1 2/11/10 <55.0 <55.0 <55.0 <55.0 <55.0 E1.62 <55.0 <55.0 <55.0 <60.0 <65.0

Ref- 2 2/11/10 <90.0 <90.0 <90.0 <90.0 <90.0 E2.83 <90.0 <90.0 <90.0 <90.0 <95.0

Ref- 3A 2/4/10 --- --- --- --- --- --- --- --- --- --- ---
Table 6 39

Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site 

number

(fig. 1)

Date

Semivolatile organic compounds 

(micrograms per kilogram) Organochlorine pesticides (micrograms per kilogram)

Diethyl 

phthalate, 

bs<2mm

Dimethyl 

phthalate, 

bs<2mm

Di-n-butyl phthalate, 

bs<2mm

Di-n-octyl 

phthalate, 

bs<2mm

beta-HCH, 

bs Aldrin, bs alpha-Endo- sulfan, bs alpha-HCH, bs trans-Non- achlor, bs cis-Chlor- dane, bs trans-Chlor- dane, bs

1 3/17/10 <170 <170 <170 442 <1.50 <6.00 <1.50 <4.50 <3.00 <3.00 <1.50

2 3/16/10 <60.0 <60.0 <60.0 <60.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

4 2/3/10 <50.0 <50.0 <50.0 E25.1 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

9 3/17/10 E56.8 <150 <150 9,340 <1.50 <6.00 <1.50 <4.50 <3.00 <3.00 <1.50

10 3/17/10 <75.0 <75.0 <75.0 80.2 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 E0.39

12 2/17/10 <50.0 <50.0 <50.0 E33.8 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

13 2/3/10 <60.0 <60.0 E27.9 <110 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

17 2/17/10 <50.0 <50.0 <50.0 E11.4 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

18 2/3/10 <60.0 <60.0 <60.0 <60.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

30 2/2/10 <50.0 <50.0 <50.0 E35.3 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

31 2/2/10 <50.0 <50.0 <50.0 <50.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

32 2/9/10 <50.0 <50.0 <50.0 <50.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

33 2/3/10 <50.0 <50.0 <50.0 E12.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

35 2/9/10 <50.0 <50.0 <50.0 <50.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

37 2/9/10 <50.0 <50.0 <50.0 <50.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

38 2/3/10 <55.0 <55.0 <55.0 <55.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

39 2/3/10 <55.0 <55.0 E33.6 E25.1 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

41 2/18/10 <145 <145 <145 <145 <1.50 <6.00 <1.50 <4.50 <3.00 <3.00 <1.50

42 2/10/10 <50.0 <50.0 <50.0 <50.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

43 3/16/10 <85.0 <85.0 <85.0 <85.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

45 2/10/10 <50.0 <50.0 <50.0 <50.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

46 2/4/10 <55.0 <55.0 <55.0 <55.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

47 2/3/10 <55.0 <55.0 <55.0 <55.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

48 2/17/10 <75.0 <75.0 <75.0 E202 <0.50 <2.00 <0.50 <1.50 E0.51 E0.86 0.78

49 2/18/10 <55.0 <55.0 <55.0 <55.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

50 2/18/10 <50.0 <50.0 <50.0 <50.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

51 2/18/10 <90.0 <90.0 <90.0 <90.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

52 2/10/10 <50.0 <50.0 <50.0 <50.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

53 2/18/10 <125 <125 <125 <125 <1.3 <5.00 <1.30 <3.80 <2.50 <2.50 <1.30

54 4/13/10 <90.3 <90.3 <90.3 <90.3 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

56 4/14/10 <100 <100 <100 <100 <1.00 <4.00 <1.00 <3.00 <2.00 <2.00 <1.00

57 4/14/10 <175 <175 <175 <175 <1.80 <7.00 <1.80 <5.20 <3.50 <3.50 <1.80

Ref- 1 2/11/10 <55.0 <55.0 <55.0 <55.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

Ref- 2 2/11/10 <90.0 <90.0 <90.0 <90.0 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50

Ref- 3A 2/4/10 --- --- --- --- <2.50 <10.0 <2.50 <7.50 <5.00 <5.00 <2.50
40 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued [QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations] Site number (fig. 1) Date Organochlorine pesticides (micrograms per kilogram) *Chlordane plus degra- dates, bs Dieldrin, bs Endrin, bs Heptachlor epoxide, bs Heptachlor, bs Lindane, bs Mirex, bs p,p’-DDD, bs p,p’-DDE, bs p,p’-DDT, bs *DDT plus degradates, bs<2mm

1 3/17/10 <7.50 <1.50 <3.00 <4.50 <3.00 <1.50 <4.50 <7.50 9.55 <3.00 9.55

2 3/16/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

4 2/3/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 E2.46 5.39 <1.00 7.85

9 3/17/10 <7.50 <1.50 <3.00 <4.50 <3.00 <1.50 <4.50 <7.50 11.7 <3.00 11.7

10 3/17/10 E0.39 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 2.52 <1.00 2.52

12 2/17/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

13 2/3/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 1.94 E0.47 2.41

17 2/17/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

18 2/3/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

30 2/2/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <2.50 <5.00

31 2/2/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

32 2/9/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

33 2/3/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

35 2/9/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

37 2/9/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

38 2/3/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 2.68 3.01 5.69

39 2/3/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

41 2/18/10 <7.50 <1.50 <3.00 <4.50 <3.00 <1.50 <4.50 <7.50 3.35 <3.00 3.35

42 2/10/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

43 3/16/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 E1.07 <1.00 E1.07

45 2/10/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

46 2/4/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

47 2/3/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

48 2/17/10 2.15 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 4.17 <1.00 4.17

49 2/18/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

50 2/18/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

51 2/18/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 3.00 <1.00 3.00

52 2/10/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

53 2/18/10 <6.30 <1.30 <2.50 <3.80 <2.50 <1.30 <3.80 <6.20 4.09 <2.50 4.09

54 4/13/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 E1.19 <1.00 E1.19

56 4/14/10 <5.00 <1.00 <2.00 <3.00 <2.00 <1.00 <3.00 <5.00 <3.00 <2.00 <10.0

57 4/14/10 <8.80 <1.80 <3.50 <5.20 <3.50 <1.80 <5.20 <8.80 <5.20 <3.50 <17.5

Ref- 1 2/11/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00

Ref- 2 2/11/10 <2.50 <0.50 <1.00 <1.50 <1.00 <0.50 <1.50 <2.50 2.27 1.02 3.28

Ref- 3A 2/4/10 <12.5 <2.50 <5.00 <7.50 <5.00 <2.50 <7.50 <12.5 <7.50 <5.00 <25.0
Table 6 41

Table 6. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[QA/QC, quality assurance/quality control; EST, Eastern Standard Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; --, no data; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site 

number

(fig. 1)

Date

Organochlorine pesticides 

(micrograms per kilogram) Polychlorinated biphenyl congeners (micrograms per kilogram)

p,p'-Methoxychlor, 

bs Toxaphene, bs AroclorTM 1016 plus AroclorTM 1242, bs AroclorTM 1254, bs AroclorTM 1260, bs

1 3/17/10 <10.5 <600 <15.0 <15.0 <15.0

2 3/16/10 <3.50 <200 <5.00 <5.00 <5.00

4 2/3/10 <3.50 <200 <5.00 <5.00 E6.18

9 3/17/10 <10.5 <600 <15.0 <15.0 <15.0

10 3/17/10 <3.50 <200 <5.00 <5.00 <5.00

12 2/17/10 <3.50 <200 <5.00 <5.00 <5.00

13 2/3/10 E2.73 <200 <5.00 <5.00 <5.00

17 2/17/10 <3.50 <200 <5.00 <5.00 <5.00

18 2/3/10 <3.50 <200 <5.00 <5.00 <5.00

30 2/2/10 <3.50 <200 <5.00 <5.00 <5.00

31 2/2/10 <3.50 <200 <5.00 E3.70 <5.00

32 2/9/10 <3.50 <200 <5.00 <5.00 <5.00

33 2/3/10 <3.50 <200 <5.00 <5.00 <5.00

35 2/9/10 <3.50 <200 <5.00 <5.00 <5.00

37 2/9/10 <3.50 <200 <5.00 <5.00 <5.00

38 2/3/10 <3.50 <200 <5.00 <5.00 <5.00

39 2/3/10 <3.50 <200 <5.00 E5.83 <5.00

41 2/18/10 <11.0 <200 <15.0 <15.0 <15.0

42 2/10/10 <3.50 <200 <5.00 <5.00 <5.00

43 3/16/10 <3.50 <200 <5.00 <5.00 <5.00

45 2/10/10 <3.50 <200 <5.00 <5.00 <5.00

46 2/4/10 <3.50 <200 <5.00 <5.00 <5.00

47 2/3/10 <3.50 <200 <5.00 <5.00 <5.00

48 2/17/10 <3.50 <200 <5.00 E3.20 E3.49

49 2/18/10 <3.50 <200 <5.00 <5.00 <5.00

50 2/18/10 <3.50 <200 <5.00 <5.00 <5.00

51 2/18/10 <3.50 <200 <5.00 <5.00 <5.00

52 2/10/10 <3.50 <200 <5.00 <5.00 <5.00

53 2/18/10 <8.80 <500 <12.5 <12.5 <12.5

54 4/13/10 <3.50 <200 <5.00 <5.00 <5.00

56 4/14/10 <7.00 <400 <10.0 <10.0 <10.0

57 4/14/10 <12.2 <700 <17.5 <17.5 <17.5

Ref- 1 2/11/10 <3.50 <200 <5.00 <5.00 <5.00

Ref- 2 2/11/10 <3.50 <200 <5.00 <5.00 <5.00

Ref- 3A 2/4/10 <17.5 <1000 <25.0 <25.0 <25.0
42 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010. [EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations] Site number (fig. 1) Station number Station name Date Time (EST) Quality-assurrance/quality-control surrogate values, as percent recovery (%) 2-Fluoro- biphenyl, bs<2 mm alpha- HCH-d6, surrogate Isodrin, surro- gate Nitroben- zene-d5, surrogate, bs<2 mm Non- achloro- biphenyl, surrogate p-Terphe- nyl-d14, surrogate, bs<2mm

2 02196842 Soil Erosion Lake at Fort Gordon, GA 3/16/10 1330 40.9 89.9 72.3 32.3 99.3 74.5

Replicate 2 02196842 Soil Erosion Lake at Fort Gordon, GA 3/16/10 1330 36.1 72.9 72.9 26.3 105 84.9

Relative percent 

difference, abs. 02196842 Soil Erosion Lake at Fort Gordon, GA 3/16/10 1330 12.3 20.9 0.82 20.3 5.84 13.0

9 021970190 Gordon Lake at Fort Gordon, GA 3/17/10 0830 73.2 73.2 59.5 60.2 107 106

Replicate 9 021970190 Gordon Lake at Fort Gordon, GA 3/17/10 0830 71.3 73.3 57.0 57.0 101 103

Relative percent 

difference, abs. 021970190 Gordon Lake at Fort Gordon, GA 3/17/10 0830 2.68 0.19 4.38 5.39 5.79 2.44
Table 8 43

Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site number

(fig. 1) Date

Semivolatile organic compounds (micrograms per kilogram)

 1,4-Dichlorobenzene, 

bs< 2mm

2,4,6-Trichlorophenol, bs< 2 

mm

 2,4-Dichlorophenol, 

bs<2mm

2-Methyl-4,6-dinitrophenol, 

bs<2mm

4-Chloro3-methylphenol, 

bs<2mm

C8-Alkylphenol, 

bs<2mm

Pentachlorophenol, 

bs<2mm

2,4,6-Trimethylphenol, 

bs<2mm

2,4-Dinitrophenol, 

bs<2mm

2-Nitrophenol, 

bs<2mm

2 3/16/10 --- <60.0 <60.0 --- <60.0 <60.0 <60.0 --- --- <60.0

Replicate 2 3/16/10 <65.0 <65.0 <65.0 --- <65.0 <65.0 <65.0 <65.0 --- <65.0

Relative percent difference, abs. 3/16/10 --- --- --- --- --- --- --- --- --- ---

9 3/17/10 <150 <150 <150 --- <150 <150 <150 <150 --- <150

Replicate 9 3/17/10 <145 <145 <145 --- <145 <145 <145 <145 --- <145

Relative percent difference, abs. 3/17/10 --- --- --- --- --- --- --- --- --- ---
44 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued [EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentra- tions. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations] Site number (fig. 1) Date Semivolatile organic compounds (micrograms per kilogram) 3,5-Di- methyl- phenol, bs<2mm 3-Nitro- phenol, bs<2mm 2-Chlo- rophenol, bs<2mm Phenol, bs<2mm Azoben- zene, bs<2mm Carbazole, bs<2mm Hexachlo- robenzene, bs<2mm Hexa- chloro- benzene, bs p-Cresol, bs<2mm Penta- chloro- anisole, bs<2mm

2 3/16/10 <60.0 --- <60.0 <60.0 <60.0 E2.62 <60.0 <3.00 <60.0 <60.0

Replicate 2 3/16/10 <65.0 --- <65.0 <65.0 <65.0 E4.54 <65.0 <3.00 E50.2 <65.0

Relative percent difference, abs. 3/16/10 --- --- --- --- --- E53.4 --- --- --- ---

9 3/17/10 <150 --- <150 E65.7 <150 <150 <150 <9.00 2,680 <150

Replicate 9 3/17/10 <145 --- <145 <145 <145 <145 <145 <9.00 2,970 <145

Relative percent difference, abs. 3/17/10 --- --- --- --- --- --- --- --- 10.3 ---
Table 8 45

Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site number

(fig. 1) Date

Semivolatile organic compounds (micrograms per kilogram)

Pentachloronitrobenzene, 

bs<2mm

1,2,4-Trichlorobenzene, 

bs<2mm

1,2-Dichlorobenzene, 

bs<2mm

 1,2-Dimethylnaphthalene, 

bs<2mm

 1,3-Dichlorobenzene, 

bs<2mm

1,6-Dimethylnaphthalene, 

bs<2mm

 1-Methyl-9Hfluorene, 

bs<2mm

 1-Methylphenanthrene, 

bs<2mm

 1-Methylpyrene, 

bs<2mm

 2,2’-Biquinoline, 

bs<2mm

2 3/16/10 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 E1.14 <60.0 <60.0

Replicate 2 3/16/10 <65.0 <65.0 <65.0 <65.0 <65.0 <65.0 <65.0 E2.46 <65.0 E14.9

Relative percent difference, abs. 3/16/10 --- --- --- --- --- --- --- E73.5 --- ---

9 3/17/10 <150 <150 <150 <150 <150 E23.5 <150 <150 <150 <150

Replicate 9 3/17/10 <145 <145 <145 <145 <145 E32.3 <145 <145 <145 <145

Relative percent difference, abs. 3/17/10 --- --- --- --- --- E31.5 --- --- --- ---
46 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued [EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations] Site number (fig. 1) Date Semivolatile organic compounds (micrograms per kilogram) 2,3,6-Tri- methyl- naph- thalene, bs<2mm 2,4-Dini- trotoluene, bs<2mm 2,6-Di- methyl- naph- thalene, bs<2mm 2,6-Dini- trotoluene, bs<2mm 2-Chlo- ronaph- thalene, bs<2mm 2-Eth- ylnaph- thalene, bs<2mm 2-Meth- ylanthra- cene, bs<2mm 4-Bromo- phenyl phenyl ether, bs<2mm 4-Chlo- rophenyl phenyl ether, bs<2mm 4H- Cyclopenta[def] phenanthrene, bs<2mm

2 3/16/10 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 E1.62

Replicate 2 3/16/10 <65.0 <65.0 <65.0 <65.0 <65.0 <65.0 <65.0 <65.0 <65.0 E2.29

Relative percent difference, abs. 3/16/10 --- --- --- --- --- --- --- --- --- E34.3

9 3/17/10 <150 <150 E131 <150 <150 <150 <150 <150 <150 <150

Replicate 9 3/17/10 E10.4 <145 E138 <145 <145 <145 <145 <145 <145 <145

Relative percent difference, abs. 3/17/10 --- --- E5.20 --- --- --- --- --- --- ---
Table 8 47

Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site number

(fig. 1) Date

Semivolatile organic compounds (micrograms per kilogram)

 9,10-Anthraquinone, 

bs<2mm

 9HFluorene, 

bs<2mm

 Acenaphthene, 

bs<2mm

 Acenaphthylene, 

bs<2mm

 Acridine, 

bs<2mm

Anthracene, 

bs<2mm

 Benzo[a]

anthracene, 

bs<2mm

Benzo[a]

pyrene, 

bs<2mm

Benzo[b]

fluoranthene, 

bs<2mm

 Benzo[c]cinnoline, bs<2mm

2 3/16/10 E10.4 <60.0 <60.0 <60.0 <60.0 E1.16 E5.61 E8.38 E13.7 <60.0

Replicate 2 3/16/10 E13.6 <65.0 <65.0 <65.0 <65.0 <65.0 E6.04 E11.3 E23.0 <65.0

Relative percent difference, abs. 3/16/10 E26.7 --- --- --- --- --- E7.52 E29.7 E50.7 ---

9 3/17/10 <150 <150 <150 E14.2 E92.1 E25.2 E43.2 E60.2 <120 <150

Replicate 9 3/17/10 <145 <145 <145 <145 <150 <145 E46.4 E63.2 E125 <145

Relative percent difference, abs. 3/17/10 --- --- --- --- --- --- E7.14 E4.86 --- ---
48 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued [EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations] Site number (fig. 1) Date Semivolatile organic compounds (micrograms per kilogram) Benzo[ghi] perylene, bs<2mm Benzo[k] fluoran- thene, bs<2mm Bis(2-chlo- roethoxy) methane, bs<2mm Chrysene, bs<2mm Dibenzo[a,h] anthracene, bs<2mm Dibenzo- thiophene, bs<2mm Fluoran- thene, bs<2mm Hexa- chlorobu- tadiene, bs<2mm Hexa- chlorocy- clopen- tadiene, bs<2mm Hexachlo- roethane, bs<2mm

2 3/16/10 E32.0 E7.17 <60.0 E9.37 <60.0 <60.0 E14.4 <60.0 <180 <180

Replicate 2 3/16/10 E20.1 E9.23 <65.0 E12.4 <65.0 <65.0 E21.1 <65.0 --- ---

Relative percent difference, abs. 3/16/10 E45.7 E25.2 --- E27.8 --- --- E37.7 --- --- ---

9 3/17/10 <150 E48.5 <150 E49.8 <150 <150 E124 <150 --- ---

Replicate 9 3/17/10 <145 <145 <145 E59.7 <145 <145 E133 <145 --- ---

Relative percent difference, abs. 3/17/10 --- --- --- E18.1 --- --- E7.00 --- --- ---
Table 8 49

Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site number

(fig. 1) Date

Semivolatile organic compounds (micrograms per kilogram)

Indeno[1,2,3-

cd]pyrene, 

bs<2mm

 Isophorone, 

bs<2mm

Isoquinoline, 

bs<2mm

Naphthalene, 

bs<2mm

 Nitrobenzene, bs<2mm

N-Nitrosodi-n-propylamine, 

bs<2mm

N-Nitrosodiphenylamine, 

bs<2mm

Phenanthrene, 

bs<2mm

Phenanthridine, 

bs<2mm

Pyrene, 

bs<2mm

2 3/16/10 E35.0 <60.0 <60.0 <60.0 <60.0 <60.0 <60.0 E4.75 <60.0 E10.3

Replicate 2 3/16/10 E21.8 <65.0 <65.0 <65.0 <65.0 <65.0 <65.0 E6.47 <65.0 E15.0

Relative percent difference, abs. 3/16/10 E46.5 --- --- --- --- --- --- E30.7 --- E37.2

9 3/17/10 <150 E32.0 <150 E7.26 <150 <150 <150 E58.7 <150 E102

Replicate 9 3/17/10 <145 E41.1 <145 E9.43 <145 <145 <145 E61.5 <145 E107

Relative percent difference, abs. 3/17/10 --- E24.9 --- E26.1 --- --- --- E4.66 --- E4.78
50 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued [EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans- chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations] Site number (fig. 1) Date Semivolatile organic compounds (micrograms per kilogram) Quinoline, bs<2mm Bis(2- chloroeth- yl) ether, bs<2mm Bis(2-chlo- roisopro- pyl) ether, bs<2mm Bis(2- ethylhexyl) phthalate, bs<2mm Benzyl n-butyl phthalate, bs<2mm Diethyl phthalate, bs<2mm Dimethyl phthalate, bs<2mm Di-n-butyl phthalate, bs<2mm Di-n-octyl phthalate, bs<2mm

2 3/16/10 <60.0 <60.0 <60.0 E242 <85.0 <60.0 <60.0 <60.0 <60.0

Replicate 2 3/16/10 <65.0 <65.0 <65.0 <65.0 <85.0 <65.0 <65.0 <65.0 <65.0

Relative percent difference, abs. 3/16/10 --- --- --- --- --- --- --- --- ---9 3/17/10 <150 <150 <150 4,780 <340 E56.8 <150 <150 9,340Replicate 9 3/17/10 <145 <145 <145 1,940 <320 <145 <145 <145 <230

Relative percent difference, abs. 3/17/10 --- --- --- 84.5 --- --- --- --- ---
Table 8 51

Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site number

(fig. 1) Date

Organochlorine pesticides (micrograms per kilogram)

beta-HCH, 

bs Aldrin, bs

alpha-Endosulfan, 

bs

alpha-HCH, 

bs

trans-Nonachlor, bs cis-Chlor- dane, bs trans-Chlor- dane, bs

*Chlordane plus 

degradates, bs

Dieldrin, 

bs

 Endrin, 

bs

2 3/16/10 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50 <2.50 <0.50 <1.00

Replicate 2 3/16/10 <0.50 <2.00 <0.50 <1.50 <1.00 <1.00 <0.50 <2.50 <0.50 <1.00

Relative percent difference, abs. 3/16/10 --- --- --- --- --- --- --- --- --- ---

9 3/17/10 <1.50 <6.00 <1.50 <4.50 <3.00 <3.00 <1.50 <7.50 <1.50 <3.00

Replicate 9 3/17/10 <1.50 <6.00 <1.50 <4.50 <3.00 <3.00 <1.50 <7.50 <1.50 <3.00

Relative percent difference, abs. 3/17/10 --- --- --- --- --- --- --- --- --- ---
52 Trace Elements, Semivolatile Organics, and Chlorinated Organic Compounds in Bed Sediments at Fort Gordon Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued [EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentra- tions of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations] Site number (fig. 1) Date Organochlorine pesticides (micrograms per kilogram) Heptachlor epoxide, bs Heptachlor, bs Lindane, bs Mirex, bs p,p’-DDD, bs p,p’-DDE, bs p,p’-DDT, bs *DDT plus degra- dates, bs<2mm p,p’- Methoxy- chlor, bs Toxa- phene, bs

2 3/16/10 <1.50 <1.00 <0.50 <1.50 <2.50 <1.50 <1.00 <5.00 <3.50 <200

Replicate 2 3/16/10 <1.50 <1.00 <0.50 <1.50 <2.50 E0.77 <1.00 E0.77 <3.50 <200

Relative percent difference, abs. 3/16/10 --- --- --- --- --- --- --- --- --- ---

9 3/17/10 <4.50 <3.00 <1.50 <4.50 <7.50 11.7 <3.00 11.7 <10.5 <600

Replicate 9 3/17/10 <4.50 <3.00 <1.50 <4.50 <7.50 10.9 <3.00 10.9 <10.5 <600

Relative percent difference, abs. 3/17/10 --- --- --- --- --- 7.22 --- 7.22 --- ---
Table 8 53

Table 8. Concentrations of semivolatile organic compounds (SVOCs), organochlorine pesticides (OCs), and polychlorinated biphenyls (PCBs) in quality-control bed sediment samples collected at Fort Gordon, GA, February–April 2010.—Continued[EST, Eastern Standadrd Time; μg/kg, micrograms per kilogram; %, percent recovery by weight; <, less than; bs <2 mm, bed sediment smaller than 2 millimeters; E, estimated value; ---, no data; abs., absolute; *, total quantitative and estimated concentration values. Concentrations of chlordane plus degradates determined as the sum of trans-nonachlor, cis-chlordane, and trans-chlordane concentrations. Concentrations of DDT plus degradates determined as the sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT concentrations]

Site number

(fig. 1) Date

Polychlorinated biphenyls (micrograms per kilogram)

AroclorTM 1016 

plus AroclorTM 

1242, bs

AroclorTM 1254, 

bs

AroclorTM 1260, 

bs

2 3/16/10 <5.00 <5.00 <5.00Replicate 2 3/16/10 <5.00 <5.00 <5.00Relative percent difference, abs. 3/16/10 --- --- ---9 3/17/10 <15.0 <15.0 <15.0Replicate 9 3/17/10 <15.0 <15.0 <15.0Relative percent difference, abs. 3/17/10 --- --- ---
Thomas and others—Trace Element, Semivolatile Organic, and Chlorinated Organic Compound Concentrations in Bed Sediments of Streams at Fort Gordon—Open-File Report 2011–1067