U.S. Department of the Interior

U.S. Geological Survey

Scientific Investigations Report 2010–5086

Prepared in cooperation with the Naval Facilities Engineering Command Southeast

Contaminant Movement Around a Permeable Reactive 

Barrier at Solid Waste Management Unit 12, 

Naval Weapons Station Charleston, North Charleston, 

South Carolina, 2009

Contaminant Movement Around a Permeable Reactive 

Barrier at Solid Waste Management Unit 12, 

Naval Weapons Station Charleston, North Charleston, 

South Carolina, 2009

By Don A. Vroblesky, Matthew D. Petkewich, and Kevin J. Conlon

Prepared in cooperation with the Naval Facilities Engineering Command Southeast

Scientific Investigations Report 2010–5086

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: 2010

For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, 

natural hazards, and the environment, visit http://www.usgs.gov or call 1-888-ASK-USGS

For an overview of USGS information products, including maps, imagery, and publications, 

visit http://www.usgs.gov/pubprod

To order this and other USGS information products, visit http://store.usgs.gov

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the 

U.S. Government.

Although this report is in the public domain, permission must be secured from the individual copyright owners to 

reproduce any copyrighted materials contained within this report.

Suggested citation:

Vroblesky, D.A., Petkewich, M.D., and Conlon, K.J., 2010, Contamination movement around a permeable reactive 

barrier at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

2009: U.S. Geological Survey Scientific Investigations Report 2010–5086, 74 p.
iii

Contents

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

Introduction.....................................................................................................................................................1

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

Description of the Permeable Reactive Barrier ..............................................................................5

Site History.............................................................................................................................................5

Methods...........................................................................................................................................................6

Data Collection......................................................................................................................................6

Well Drilling............................................................................................................................................6

Conceptual Site Model..................................................................................................................................8

Movement of Contamination Around the Permeable Reactive Barrier..............................................10

Potential Causes for Movement of Contamination Around the Southern End of the 

Permeable Reactive Barrier................................................................................................20

Fate of Contamination Downgradient from the Permeable Reactive Barrier...........................25

Summary........................................................................................................................................................29

References....................................................................................................................................................29

Appendixes ...................................................................................................................................................31

Figures

1–5. Maps showing—

1. Locations of Naval Weapons Station Charleston and Solid Waste 

Management Unit 12 (SWMU12) and nearby surface-water features, 

North Charleston, South Carolina.............................................................................................2

2. Locations of permanent sampling points at Solid Waste Management Unit 12 

(SWMU12), Naval Weapons Station Charleston, North Charleston, 

South Carolina..............................................................................................................................3

3. Groundwater trichloroethene (TCE) concentrations in wells sampled 

2000–2001, prior to installation of the permeable reactive barrier, Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina..............................................................................................................................4

4. Temporary-well and selected permanent-well locations and sampling dates, 

Solid Waste Management Unit 12, Naval Weapons Station Charleston, 

North Charleston, South Carolina.............................................................................................7

5. Groundwater levels in the surficial aquifer, Solid Waste Management Unit 12 

(SWMU12), Naval Weapons Station Charleston, North Charleston, 

South Carolina, August 28, 2009................................................................................................9

6. Graph showing changes in concentrations of selected volatile organic compounds 

in groundwater at wells 12MW-26S, 12MW-23S, and 12MW-18S near the southern 

and northern ends of the permeable reactive barrier (PRB), Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, 2003–2009.................................................................................................................11
iv

7–14. Maps showing distribution of contaminants in groundwater during 2009, 

Solid Waste Management Unit 12, Naval Weapons Station Charleston, 

North Charleston, South Carolina—

7. 1,4-dioxane .................................................................................................................................12

8. 1,1-dichloroethane (1,1-DCA) ..................................................................................................13

9. cis-1,2-dichloroethene (cDCE) ................................................................................................14

10. Tetrachloroethene (PCE)..........................................................................................................15

11. Trichloroethene (TCE)...............................................................................................................16

12. 1,1,1-trichloroethane (1,1,1-TCA) ............................................................................................17

13. 1,1-dichloroethene (1,1-DCE)...................................................................................................18

14. Vinyl chloride (VC).....................................................................................................................19

15–21. Graphs showing—

15. Hydraulic gradients from the upgradient to the downgradient sides of the 

permeable reactive barrier (PRB) in the northern, central, and southern parts, 

with the horizontal lines representing average values, Solid Waste Management 

Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

2003–2009....................................................................................................................................20

16. Hydraulic gradients over time from wells 12MW-03S to 12MW-05S, 12MW-02S 

to 12MW-05S, 12MW-03S to 12MW-05I, and 12MW-10S to 12MW-05S, and a 

map showing the locations of the hydraulic-gradient comparisons, the 

collapsed trench, and the existing permeable reactive barrier (PRB), 

Solid Waste Management Unit 12, Naval Weapons Station Charleston, 

North Charleston, South Carolina, 2000–2009 ......................................................................21

17. Changes in the total organic carbon content of groundwater in the northern, 

central, and southern parts of the permeable reactive barrier (PRB), Solid 

Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, 2003–2009 .......................................................................................................23

18. Changes in concentrations of selected volatile organic compounds in groundwater 

at wells 12MW-22S and 12MW-28S near the permeable reactive barrier (PRB), and 

locations of wells and the PRB, Solid Waste Management Unit 12, Naval Weapons 

Station Charleston, North Charleston, South Carolina, April 2003–2009..........................24

19. Concentrations of tetrachloroethene (PCE) and trichloroethene (TCE) over time in 

groundwater at selected wells in the groundwater-contamination plume, Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, August 2000–2009..........................................................................................26

20. Concentrations of cis-1,2-dichloroethene (cDCE) and vinyl chloride (VC) over time in 

groundwater at selected wells in the groundwater-contamination plume, Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, August 2000–2009..........................................................................................27

21. Concentrations of 1,1,1-trichloroethane (1,1,1-TCA), 1,1-dichloroethane 

(1,1-DCA), and 1,1-dichloroethene (1,1-DCE) over time in groundwater at 

selected wells in the groundwater-contamination plume, Solid Waste Management 

Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000–2009......................................................................................................................28
v

Appendixes

1. Well-construction data, Solid Waste Management Unit 12, Naval Weapons 

Station Charleston, North Charleston, South Carolina...........................................................32

2. Monthly water-level data from wells at Solid Waste Management Unit 12, 

Naval Weapons Station Charleston, North Charleston, South Carolina, 

April 1998 to August 2009.............................................................................................................33

3. Concentrations of organic compounds measured in groundwater and surface 

water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, 

North Charleston, South Carolina, August 2000 to September 2009 ....................................38

4. Concentrations of inorganic constituents measured in groundwater at Solid 

Waste Management Unit 12, Naval Weapons Station Charleston, 

North Charleston, South Carolina, August 2000 to September 2009 ....................................55

5. Concentrations of selected volatile organic compounds detected 

in groundwater from temporary wells at Solid Waste Management Unit 12, 

Naval Weapons Station Charleston, North Charleston, South Carolina, 

August to October 2009................................................................................................................70

6. Lithologic log and well-construction diagram of well 12PZ-07 at Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, August 2009. ......................................................................................................71

7. Lithologic log and well-construction diagram of well 12PZ-08 at Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, August 2009 .......................................................................................................72

8. Lithologic log and well-construction diagram of well 12PZ-09 at Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, August 2009 .......................................................................................................73

9. Lithologic log and well-construction diagram of well 12PZ-10 at Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, August 2009 .......................................................................................................74

Conversion Factors, Datums, and Abbreviated 

Water-Quality Units

Inch/Pound to SI

Multiply By To obtain

Length

inch (in.) 2.54 centimeter (cm)

inch (in.) 25.4 millimeter (mm)

foot (ft) 0.3048 meter (m)

mile (mi) 1.609 kilometer (km)

Volume

gallon (gal) 3.785 liter (L) 

Flow rate

foot per day (ft/d) 0.3048 meter per day (m/d)

foot per year (ft/yr) 0.3048 meter per year (m/yr)
vi

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

°F = (1.8 × °C) + 32

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

°C = (°F – 32) / 1.8

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

(NAVD 88).

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).

Altitude, as used in this report, refers to distance above the vertical datum.

Specific conductance is given in microsiemens per centimeter at 25 degrees Celsius 

(μS/cm at 25 °C).

Concentrations of chemical constituents in water are given either in milligrams per liter (mg/L) 

or micrograms per liter (μg/L).

Abbreviations

1,1-DCA 1,1-dichloroethane

1,1-DCE 1,1-dichloroethene

1,2-DCA 1,2-dichloroethane

1,1,1-TCA 1,1,1-trichloroethane

bls below land surface

cDCE cis-1,2-dichloroethene

CSM conceptual site model

LEB-H liquid enzyme breaker

mL/min milliliter per minute

NAVFAC SE Naval Facilities Engineering Command Southeast

NWS Naval Weapons Station

PCE tetrachloroethene

PCP pentachlorophenol

PRB permeable reactive barrier

PVC polyvinyl chloride

RCRA Resource Conservation and Recovery Act

RFA RCRA Facility Assessment

RFI RCRA Facility Investigation

SWMU12 Solid Waste Management Unit 12

TCE trichloroethene

TOC total organic carbon

USGS U.S. Geological Survey

UST underground storage tank

VC vinyl chloride

VOC volatile organic compound

ZVI zero-valent iron
Abstract

The U.S. Geological Survey and the Naval Facilities 

Engineering Command Southeast investigated natural and 

engineered remediation of chlorinated volatile organic 

compound groundwater contamination at Solid Waste Management Unit 12 at the Naval Weapons Station Charleston, 

North Charleston, South Carolina, beginning in 2000. In early 

2004, groundwater contaminants began moving around the 

southern end of a permeable reactive barrier (PRB) installed 

by a consultant in December 2002. The PRB is a 130-footlong and 3-foot-wide barrier consisting of varying amounts of 

zero-valent iron with or without sand mixture. Contamination 

moving around the PRB probably has been transported at least 

75 feet downgradient from the PRB at a rate of about 15 to 

29 feet per year. 

The diversion of contamination around the southern end 

of the PRB may be due to construction difficulties associated 

with the PRB installation or to reduced permeability in the 

PRB. An event that took place during installation of the 

PRB, which may have caused permeability loss, was the 

collapse and subsequent abandonment of a 110-foot-long 

trench originally designed to be the PRB on November 11, 

2002, approximately 25 feet upgradient (west) from the final 

PRB. Guar gum with antimicrobial preservative in a polymer 

slurry had been used to stabilize the abandoned trench prior to 

collapse and was only partially recovered. Residual guar gum 

can cause permeability reduction in a PRB. It also is possible 

that permeability reduction took place within the PRB by slow 

degradation of the guar gum slurry or mineral precipitation. 

Despite the likely permeability reduction in and near the PRB 

immediately following installation, there is evidence that 

contaminants moved through the PRB and were degraded, 

consistent with the planned purpose of the PRB.

 Volatile organic compound contamination in groundwater downgradient from the PRB is subject to attenuation 

by phytovolatilization, sorption, and biodegradation. Pulses 

of contamination increases have been observed in some 

monitoring wells downgradient from the PRB. The pulses may 

reflect downgradient transport of contaminant pulses; however, lateral shifting of the plume is a more likely explanation 

for the concentration changes at well 12MW-12S. 

The ability to monitor the fate and behavior of the plume 

in the forest is severely limited because the present axis of 

maximum contamination in that area bypasses all but one of 

the existing monitoring wells (12MW-12S). Moreover, the 

2009 data indicate that there are no optimally placed sentinel 

wells in the probable path of contaminant transport. Thus 

the monitoring network is no longer adequate to monitor the 

groundwater contamination downgradient from the PRB.

Introduction

Groundwater contamination by chlorinated volatile 

organic compounds (VOCs) is present at Solid Waste Management Unit 12 (SWMU12) at the Naval Weapons Station 

(NWS) Charleston, North Charleston, which is approximately 

10 miles north of Charleston, South Carolina (figs. 1, 2). 

The primary VOCs of concern are tetrachloroethene (PCE), 

1,1,1-trichloroethane (1,1,1-TCA), trichloroethene (TCE), 

cis-1,2-dichloroethene (cDCE), vinyl chloride (VC), 

1,1-dichloroethene (1,1-DCE), 1,2-dichloroethane (1,2-DCA), 

and 1,1-dichloroethane (1,1-DCA). Additional groundwater 

contaminants include 1,4-dioxane. 

The U.S. Geological Survey (USGS) and the Naval 

Facilities Engineering Command Southeast (NAVFAC SE) 

began investigating and monitoring groundwater contamination at SWMU12 in 2000. Based in part on the distribution 

of groundwater contamination in August 2002 (fig. 3), a 

consultant installed a permeable reactive barrier (PRB) of 

zero-valent iron (ZVI) to intercept the contamination in 

December 2002. By early 2004, however, it became clear that 

part of the contamination plume had shifted and was moving 

around the southern end of the PRB. 

Contaminant Movement Around a Permeable Reactive 

Barrier at Solid Waste Management Unit 12, 

Naval Weapons Station Charleston, North Charleston, 

South Carolina, 2009

By Don A. Vroblesky, Matthew D. Petkewich, and Kevin J. Conlon
2 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

Purpose and Scope

The purpose of this report is to discuss data related to 

the movement of groundwater contamination around a PRB 

at SWMU12 and into the forest downgradient from the PRB, 

Naval Weapons Station Charleston, North Charleston, South 

Carolina. These findings are based on several years of monitoring at wells near and distant from the PRB and a one-time 

sampling of 47 temporary wells installed in the downgradient 

forest in 2009. Synoptic water-level measurements were made 

at wells across the site, and four piezometers were installed 

in 2009. Appendixes 1 to 4 summarize well-construction, 

water-level, and water-quality data for SWMU12 from 1998 

to 2009. Appendix 5 summarizes VOC data specifically for 

the temporary wells installed and sampled in 2009 in the 

forest downgradient from the PRB. Appendixes 6 to 9 provide 

lithologic logs and well-construction diagrams for the four 

new piezometers installed at SWMU 12 during 2009.

Figure 1. Locations of Naval Weapons Station Charleston and Solid Waste Management 

Unit 12 (SWMU12) and nearby surface-water features, North Charleston, South Carolina.

Northern

Marsh Eastern Marsh

Cooper

River

George Pond

SWMU12

Drainage to

Cooper 

River

Drain Cooper

River

Base map modified from Google Maps, accessed November 1, 2006

 (References to non-Department of the Interior (DOI) products 

 do not constitute an endorsement by the DOI)

32°55'

33°

80° 79°55'

0 1 2 MILES

0 1 2 KILOMETERS

NAVAL 

WEAPONS

STATION 

CHARLESTON

Solid Waste

Management

Unit 12

Atlantic

Ocean

Columbia

South 

Carolina

Area of

Detail

North 

Charleston

Charleston

Cooper River 

Base from U.S. Geological Survey

 1:24,000-scale digital data

N

0 1,000 FEET

0 100 200 METERS

500
Introduction 

3Figure 2. Locations of permanent sampling points at Solid Waste Management Unit 12 (SWMU12), Naval Weapons Station Charleston, North Charleston, South Carolina.

Building 88 

(demolished) 

Building 33 

(demolished) 

Building 449 

Permeable

Reactive 

Barrier

Northern

Marsh

Eastern Marsh SWMU12

Forest

Non-Forested

Area

Paved 

Area 

Forest

Dirt Road

Area shown in figures 3, 4, and 7-13

12MW-09D

12MW-02D

12MW-03D 

12MW-04D 

12MW-05D 

12MW-05I 

12MW-06D

12MW-11D

12MW-12D

12MW-19D 12MW-20D

12MW-23D 

12MW-25D 

12MW-24D 

12MW-27D 

12MW-22D 

12MW-21D 12MW-28D 

12MW-21S 

12MW-24S 

12MW-19S 

12MW-08D 

12MW-07D 

12PZ-06 

12PZ-03D 

12PZ-05 

12PZ-04 

12MW-16S 

12MW-14S 

12MW-15S 

12MW-09S

12MW-02S

12MW-03S 

12MW-04S 

12MW-06S

12MW-07S 

12MW-10S 

12MW-11S

12MW-12S 

12MW-13S

12MW-05S 

12MW-08S 

12MW-18S 

12MW-20S 

12MW-22S 

12MW-23S 12MW-25S 

12MW-26S 

12MW-27S 

12MW-28S 

12MW-17S 

12MW-29S

12MW-30S 

12PZ-01 

12PZ-03S

12PZ-10

12PZ-09

12PZ-07

12PZ-08

EXPLANATION

Approximate area of engineeredphytoremediation test plotusing loblolly pine planted May 2003

Monitoring well or piezometerand well number 12MW-03S

Approximate source area. Blackrectangle represents approximatelocation of the former undergroundstorage tank

100 FEET

20 METERS

0 500 10

N
4 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

Figure 3. Groundwater trichloroethene (TCE) concentrations in wells sampled 2000–2001, prior to installation of the permeable reactive barrier, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina (temporary-well information is from CH2M Hill Constructors, Inc., 2002).

EasternMarsh

Forest

Forest

Road

Pavement

Pavement

A Shallow monitoring well, with name and trichloroethene concentration, 

in micrograms per literTemporary well, with name and trichloroethene concentration, in micrograms per liter 

EXPLANATION

12MW-05S

12-MIP-01

1

100

23,000

Line of equal trichloroethene concentration, in micrograms per liter. Interval is variable as shown. Dashed where inferred

A

@A

@A

A

@A

@A

@A

@A

12MW-13S

12MW-12S

12MW-11S

12MW-10S

12MW-06S

12MW-05S 12MW-03S

12MW-02S

10,000

1,000

100

12-MIP-01

12-MIP-28 12-MIP/17

12-MIP/VP-32

12-MIP/VP-16

12-MIP/VP-15

12-MIP/VP-19

12-MIP/VP-05

12-MIP/VP-12

12-MIP/VP-11 12-MIP/VP-04

12-MIP/VP-10

12-MIP/VP-02

12-MIP/VP-14

12-MIP/VP-13

12-MIP/VP-08

12-MIP/VP-07

12-MIP/VP-SC29

12-VP-DD

12-VP-CC

12-VP-FF

12-VP-EE

<1

<100

86,700

2

3,140

<1

<50

<1

<1

23,000

3,500 1,470

16,000

88,300

1

226

27,200

11,900 7,450

3,880

11,700

2,900

38

16

<2

214

360

276 5

17,300

100 FEET

20 METERS 0 10

0 50

N
Introduction 5

Description of the Permeable Reactive Barrier

The PRB at SWMU12 (fig. 2) installed in December 2002 

consists of a 130-foot (ft)-long and 3-ft-wide permeable barrier oriented perpendicular to the main axis of the groundwater 

contamination measured in 2000–2001 and in 2002 (CH2M 

Hill Constructors, Inc., 2002, 2003) (fig. 3). The PRB 

consists of varying amounts of ZVI with or without sand

mixture depending on the expected contaminant concentrations.

The upper part of the PRB along the major axis of contamination, approximately 60 to 100 ft from the northern end of the 

PRB was expected to intercept the highest VOC concentrations 

and so that part of the PRB consists of 100 percent ZVI. In the 

deeper part of the PRB at that location and across the full 

vertical extent of the PRB adjacent to that location, the PRB 

consists of a mixture of 50 percent sand and 50 percent ZVI. 

The northernmost 40 ft of the PRB and the southernmost 

10 ft of the PRB consist of a mixture of 80 percent sand and 

20 percent ZVI. The top of the PRB is a few feet below land 

surface (ft bls). Approximately the bottom 1 ft of the PRB 

is seated into a clay layer at about 32–35 ft bls (CH2M Hill 

Constructors, Inc., 2003). Groundwater near the PRB is in a 

confined aquifer at a depth of about 10 ft, below a clay layer 

that extends approximately to land surface.

Monitoring wells were installed by the contractor at the 

time that the PRB was installed. The wells were installed 

as two-well clusters, with the shallow well (identified by an 

“S” suffix) screened at about the depth of the groundwater 

contamination (typically about 10 ft bls) and the deeper well 

(identified by a “D” suffix) screened near the bottom of the 

PRB. The well clusters were installed a few feet upgradient 

and a few feet downgradient from the PRB near the northern 

end, the southern end, and along the center of the PRB (fig. 2). 

In addition, clusters of 1-inch-diameter wells were installed in 

the PRB near the northern end, the southern end, and along the 

center of the PRB. Subsequent drilling to collect core samples, 

however, showed that the well (12MW-24S) formerly thought 

to be in the PRB near the southern end actually is along the 

downgradient edge of the PRB and probably is not intersecting 

the PRB. A single boring near well 12MW-21S in the PRB 

near the center of the PRB showed that the boring appeared 

to scrape the edge of the PRB at some depths and to contain 

sediment from the PRB at other depths. Thus, well 12MW-21S 

probably is at the edge of the PRB. Because the water levels 

in well 12MW-21S are more similar to those in the well 

upgradient from the PRB than to the water levels in the well 

downgradient from the PRB, well 12MW-21S probably is at 

the upgradient edge of the PRB. 

Site History

Operations at SWMU12 from the early 1970s to 1981 

consisted of preservation of wooden ammunition boxes by 

impregnation with pentachlorophenol (PCP) in dip tanks 

outside former building 88 (fig. 2). VOC contamination is 

present in the soil and groundwater, and appears to be related 

to former degreasing operations and a leaking underground 

storage tank (UST) located in the southeastern corner of 

former building 88. The VOCs primarily are chlorinated 

ethanes and ethenes. 

The last known use of the UST was to store solvents 

for wood preservation in 1979. The tank was pumped dry in 

1998 and was removed and inspected in September 1999. 

Water in the excavation hole contained concentrations of total 

VOCs greater than 100,000 micrograms per liter (μg/L) (Tetra 

Tech NUS, Inc., 2000a). The most concentrated constituents 

measured, listed in order of decreasing concentration, were 

1,1-DCA at 84,300 μg/L; 1,1,1-TCA at 52,600 μg/L; 1,1-DCE 

at 9,950 μg/L; PCE at 7,630 μg/L; cDCE at 4,900 μg/L; 

1,2-DCA at 830 μg/L; chloroethane at 500 μg/L; and TCE at 

an estimated value of 385 μg/L. The tank and associated pipes 

were corroded, and two holes were present near the bottom 

of the tank. The tank-fill pipe was not connected to the tank. 

The bottom of the tank extended to a depth of about 7 ft below 

ground surface (Tetra Tech NUS, Inc., 2000b).

Several site investigations have been conducted at 

SWMU12. Harmon Engineering and Testing (1984) completed 

an installation assessment study for NWS Charleston in January 1984. Although the study did not include an investigation 

of SWMU12, the report described ordnance-related activities 

that took place at building 88, which was located at SWMU12. 

A site-characterization study in 1987 (Environmental Science 

and Engineering, Inc., 1987) included collection of sediment 

and surface-water samples for PCP analysis. Because the study 

detected only low levels of PCP, the report did not recommend 

further investigation.

An interim Resource Conservation and Recovery Act 

(RCRA) Facility Assessment (RFA) was completed in 1988 

because the NWS Charleston began operating under a 

RCRA interim status. During the assessment, building 88 

and the vicinity were designated as SWMU12 (Kearney/

Centaur, 1988).

As part of the RCRA Facility Investigation (RFI), Tetra 

Tech NUS, Inc. (2000a), conducted studies of groundwater 

contamination and hydrology between 1998 and 1999. These 

investigations included installation and sampling of 19 

monitoring wells and 45 temporary well points. In addition, 

four separate tidal studies were conducted at the marshes east 

and north of SWMU12 and at monitoring wells 12MW-06S 

and 12MW-06D. The investigation also included collecting 

and analyzing 11 surface-water and sediment-sample pairs collected from drainage ditches and from the marshes, as well as 

soil samples from several locations. The investigations showed 

that groundwater contamination was moving eastward from a 

source area on the western side of building 88 and extended 

at least 400 ft toward the eastern marsh. Recommendations 

from the investigation included monitoring the groundwater 

for VOCs and PCP. Supplemental RFI work included installation and sampling of 3 monitoring wells and 12 temporary 

monitoring wells (Tetra Tech NUS, Inc., 2001).
6 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

The USGS and the NAVFAC SE began investigations of 

the groundwater contamination in 2000 following completion 

of a series of site-evaluation investigations by consulting 

firms. The purpose of the USGS/NAVFAC SE investigations 

was to evaluate effects of natural and engineered remediation 

at the site. One engineered remediation approach being used 

at the site is a PRB consisting of ZVI installed in December 

2002 (fig. 2). The PRB is hydraulically downgradient from the 

source area and is used to intercept and control concentrations 

of chlorinated solvents moving downgradient into a lowland 

forest and toward a freshwater wetland. A second engineered 

remediation approach is a grove of loblolly pine (Pinus taeda) 

saplings in the source area that were planted in May 2003 

(fig. 2). The USGS also planted hybrid poplar trees above the 

plume in the forest and near well 12MW-26S in March 2005 

as a phytoremediation evaluation, but the hybrid poplars did 

not survive. In February 2008, the USGS planted 35 “fastgrow” loblolly pine trees on the southwestern side of 

the PRB, but they died, possibly as a result of being mowed 

down multiple times. Summaries of investigative activities 

at the site are available for the periods October 2003 to 

October 2004 (Vroblesky and others, 2004), October 2004 

to July 2006 (Vroblesky and others, 2007b), October 2006 to 

November 2007 (Vroblesky and others, 2008), and February 

to August 2008 (Vroblesky and Petkewich, 2009). 

Methods

This investigation used standard methods for data 

collection. The following sections discuss specifics associated 

with the data collection and well drilling.

Data Collection

Multiple types of sampling points were used during this 

investigation to collect data at SWMU12 (fig. 2). Wells designated by a prefix of “12MW-” primarily are 2-inch-diameter 

wells used for monitoring groundwater chemistry and water 

levels. Exceptions are wells 12MW-14S, 12MW-15S, and 

12MW-16S, which are 0.5-inch-diameter wells installed to 

monitor water levels; these wells typically are not included 

on water-level maps because of questionable reliability. 

Additional exceptions are wells 12MW-19S,D; 12MW-21S,D; 

and 12MW-24S,D, which are 1-inch-diameter wells that the 

original contractor attempted to place within the PRB, but 

were later determined to be outside of the PRB (Vroblesky and 

others, 2007b). The nomenclature suffixes “S,” “I,” and “D” 

designate shallow, intermediate, and deep depths, respectively. 

The “S” wells have 2.5- to 11-ft screens generally to total 

depths below ground surface of about 11.5 to 18 ft. The single 

“I” well has a 10-ft screen open at a depth of 19 to 29 ft. The 

“D” wells typically have 10-ft-long screens with total depths 

ranging from about 31 to 45 ft. With the exception of well 

12PZ-01 (a 2-inch-diameter well), wells designated with the 

prefix “12PZ-” indicate 1-inch-diameter wells. The “12PZ-” 

wells have 2.5- to 5-ft screen lengths and are used primarily 

for monitoring water levels, although VOC data have been 

collected from all of them, and well 12PZ-03D is routinely 

monitored for VOC content. 

This investigation used low-flow sampling methods 

(Barcelona and others, 1994; Shanklin and others, 1995; Sevee 

and others, 2000) to collect groundwater samples from all of 

the wells near the PRB. In other wells, three or more casing 

volumes of water were purged prior to sampling because 

previous investigations at this site have shown that stabilization of dissolved-oxygen concentrations to environmentally 

realistic values during the low-flow sampling in some wells 

could not be achieved during the winter because of in-well 

convection (Vroblesky and others, 2007a). Three casing 

volumes of water also were purged routinely in some wells 

where previous sampling has shown that continued pumping 

produces continuously increasing VOC concentrations, possibly because the highest VOC concentrations in the aquifer 

are slightly offset from the well screen. 

During low-flow sampling, the wells were purged at 

a rate of approximately 100–300 milliliters per minute 

(mL/min) from approximately the center of the screened 

interval using a peristaltic pump, until the water temperature, 

pH, dissolved-oxygen concentration, and specific conductance 

values stabilized and no additional water-level drawdowns 

were observed. Monitoring the stabilization of temperature, 

pH, dissolved oxygen, and specific conductance took place 

by passing the water through a flow-through cell containing 

sensors. Field properties were considered to be stable during 

pumping when the observed changes over three 3-minute 

intervals were within ±3 percent for water temperature and 

specific conductance, within ±0.1 unit for pH, and within 

±10 percent for dissolved oxygen. 

The USGS synoptically measured water levels by 

using an electric water-level sensor and using the top of the 

well casing as the reference point for determining depths to 

water. Water-level measurements were to the nearest 0.01 ft. 

Subtracting the depth to water from the previously surveyed 

altitudes of the top of the well casing provided water-level 

altitudes. Piezometric maps generated from the data provided 

general directions of groundwater flow. One well (12MW-05S) 

contained a Solinst Levelogger®, which measured continuous 

water level to monitor short-term and long-term water-table 

fluctuations, and compensated for barometric pressure 

changes. Piezometers 12PZ-07, 12PZ-08, 12PZ-09, and 

12PZ-10 became part of the water-level network in 

September 2009 (fig. 4).

Well Drilling

Piezometers 12PZ-07, 12PZ-08, 12PZ-09, and 12PZ-10 

were installed on August 20, 2009, and developed on 

August 25, 2009. The wells were installed by Terry Environmental Services, Inc., using a 4.25-inch inside-diameter 
Methods 

7

Figure 4. Temporary-well and selected permanent-well locations and sampling dates, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina.

EasternMarsh

Forest

Forest

Road

Permeable

Reactive

Barrier

Pavement

Pavement

@A @A

@A

@A

@A

@A @A

@A

@A

@A

@A

@A @A

A Shallow monitoring well

Temporary well sampled August 2009 and abbreviated well name. Complete well name for well “TW1” is “12TW-2009-1”

Temporary well sampled October 2009 and abbreviated well name. Complete well name for well “TW44” is “12TW-2009-44” 

EXPLANATION

TW1

TW44

Piezometer installed August 2009 and piezometer name @?

12MW-05S

12PZ-09

@A @A

@A

@A

@A

@A @A

@A

@A

@A

@A

@A @A

@?

@?

@?

@?

@?

@

@?

@?

?

TW9

TW8

TW7

TW6

TW5

TW4

TW3

TW2

TW1

TW42

TW41

TW40

TW39

TW37

TW36 TW35

TW34

TW33 TW32

TW31

TW30

TW29

TW28

TW27

TW26

TW25

TW24

TW23

TW22

TW21

TW20

TW19

TW18

TW17

TW15

TW14

TW13

TW12

TW11

TW10

TW38

TW16

TW45

TW46

TW47

TW43

TW44 12PZ-08

12PZ-07

12PZ-09

12PZ-10

12MW-29S

12MW-26S

12MW-25S

12MW-22S

12MW-18S

12MW-17S 12MW-13S

12MW-12S

12MW-11S

12MW-10S

12MW-05S 12MW-03S

12MW-28S

100 FEET

20 METERS 0 10

0 50

N
8 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

hollow-stem auger. The wells consisted of 2-inch outsidediameter schedule 40 polyvinyl chloride (PVC) pipe with 5-ft 

screens having a 0.01-inch slot size. Filter sand was added 

outside of the screen from the bottom of the boring from 1 to 

2 ft above the top of the screen. At least 1 ft of bentonite seal 

was added above the sandpack. Portland cement was used to 

grout the pipe from the top of the bentonite to land surface. A 

2-ft by 2-ft concrete pad was added at land surface, along with 

a steel protective riser. In three out of the four piezometers, 

the bottom of the well screens extended to 15 or 16 ft bls. In 

well 12PZ-09, however, the surficial clay extended to a depth 

of 16 ft bls. Because the bottom of the 5-ft-long well screen 

of 12PZ-09 extended to 18 ft bls, only the lowermost 2 ft of 

screen is open to a sandy horizon. This placement of the well 

screen should not adversely affect the usefulness of the well 

for its intended use as a piezometer. If piezometer 12PZ-09 is 

slug tested to determine hydraulic conductivity, however, the 

reduction in screen opening should be taken into account.

Forty-two temporary wells were installed and sampled 

during August 18–19, 2009, and five temporary wells were 

installed and sampled on October 30, 2009, in the forest east 

of the PRB (fig. 4). The temporary wells were installed and 

abandoned by Terry Environmental Services, Inc., and were 

sampled by the USGS. The temporary wells were installed 

by using push technology to advance a stainless-steel well 

screen with a retractable cover to the target depth. At the target 

depth, the cover was retracted, exposing 4 ft of screen. The 

target depth was chosen to approximate the screened interval 

of the nearest monitoring well. Samples were collected from 

the wells by using a peristaltic pump after purging for several 

minutes until the turbidity decreased.

Conceptual Site Model

Based on the data gathered from this and previous 

investigations at SWMU12, a conceptual site model (CSM) 

has been developed. The following paragraphs of this section 

include a discussion of the physical setting, the basic site 

hydrology and hydrogeology, probable contaminant sources, 

transport and fate of the contamination, and remediation 

scenarios used to date. 

SWMU12 is located on a topographically low area. 

Surface-water features nearly surround the site (fig. 1). The 

surface-water features are a series of ponds and marshes 

separated from each other by berms, further limiting water 

exchange among the surface-water features. George Pond 

connects to a tidally influenced area farther southeast by a 

conduit through the berm. Average annual rainfall is about 

50 to 52 inches (South Carolina State Climatology Office, 

2009). Rainfall runoff is the dominant influence on water 

levels in the marshes (Tetra Tech NUS, Inc., 2000a).

In general, the hydrogeologic framework of SWMU12 

consists of a surficial aquifer composed of sand to clayey sand. 

The surficial aquifer is confined over most of its extent. It is 

overlain by dense clay that extends from about land surface 

to a depth of about 10 to 11 ft in the source area and 8 to 

10 ft in the forest. The surficial aquifer is about 13 to 20 ft 

thick in much of the study area (Tetra Tech NUS, Inc., 2001) 

with possible localized zones where it may be less than 5 ft 

thick (Vroblesky and others, 2007b). Hydraulic conductivity 

values from the aquifer range from about 1 to 20 feet per day 

(Vroblesky and others, 2007b).

A series of borings in the eastern marsh in 2003 showed 

that the clay was continuous beneath the marsh out to at least 

about 30 ft from the shore near well 12MW-13S (Vroblesky 

and others, 2007b). Beneath the surficial aquifer, clay layers 

with localized sand lenses extend to a depth of about 36 to 

48.5 ft, where a dense olive-green clay encountered in the 

borings for wells 12MW-03D, 12MW-04D, and 12MW-05D 

(Tetra Tech NUS, Inc., 2000b) precludes potential for further 

downward transport of contamination. 

Groundwater moves from recharge areas near former 

building 88 in an approximately eastward direction toward 

areas of lower groundwater levels (fig. 5). Prior to Hurricane 

Gaston in August 2004, water levels at well 12MW-08S were 

usually higher than in nearby wells, resulting in a trough-like 

configuration of the potentiometric surface in the surficial 

aquifer, oriented approximately along the axis of groundwater 

contamination between wells 12MW-05S and 12MW-13S 

(Vroblesky and others, 2007b). Following Hurricane Gaston 

in August 2004, the ponds north and northeast of SWMU12 

partly drained, and thereafter, well 12MW-08S typically had 

the lowest head at the site (Vroblesky and others, 2007b). The 

change may have resulted in a shift to a more northeasterly 

direction of groundwater flow. 

The primary VOCs of concern in groundwater at 

SWMU12 are chlorinated aliphatic solvents. Chlorinated 

parent compounds, such as PCE and 1,1,1-TCA, are suspected 

to have been released through several operationally related 

activities, including surface spills, drainage from floor drains 

at former building 88, and a leaking UST (Tetra Tech NUS, 

Inc., 2000a). The suspected source area is in the vicinity of 

the former UST and along the southeastern side of former 

building 88 (fig. 2). TCE probably is an original contaminant 

as well as a dechlorination or transformation product of PCE. 

Other VOCs present in groundwater at SWMU12 as probable 

breakdown products include cDCE, VC, 1,1-DCE, 1,1-DCA,

and 1,4-dioxane.

Because most of the soil zone consists of a clay layer that 

extends from about land surface to a depth of about 10–11 ft in 

the source area, much of the contamination released onto the 

soil may have been sorbed onto clay surfaces. The presence 

of chlorinated solvents in the groundwater beneath the clay, 

however, clearly indicates that contamination continued to 

migrate vertically downward past the clay. Although the 

movement may have been through local discontinuities in the 

clay, studies have shown that hydrophobic organic solvents 

can cause clays to shrink, producing vertical cracks and allowing movement of the solvents through the clay (Abdul and 

others, 1990). Because the UST was about 7 ft bls (Tetra Tech 
Conceptual Site Model 

9

Figure 5. Groundwater levels in the surficial aquifer, Solid Waste Management Unit 12 (SWMU12), Naval Weapons Station Charleston, North Charleston, South Carolina, August 28, 2009.

Building 88

(demolished)

Building 33

(demolished)

Building 449

SWMU12

Grass 

Pavement

1.8

1.7

1.9

1.6

1.5

1.4

1.3

1.2

Road

Northern

Marsh

Forest

Eastern

Marsh

1.97

1.91

1.89 2.10

2.01

1.95

2.03

1.96

2.02

1.77

1.72

1.77

2.03

2.04

1.66 1.78

2.18

1.24

2.26

2.49

1.75

12MW-14S

12MW-16S

1.82

2.0

1.79

2.04

1.99

2.01

1.99

12MW-15S

1.87

1.87

1.71

1.73

2.1

1.14

12MW-09S

12MW-03S

12MW-04S

12MW-06S

12MW-07S

12MW-11S

12MW-12S

12MW-13S

12MW-05S

12MW-08S

12MW-18S

12MW-22S

12MW-23S

12MW-25S

12MW-26S

12MW-27S

12MW-28S

12MW-17S 12MW-30S

12PZ-01

12MW-29S

12MW-20S

12MW-19S

12MW-21S

12MW-24S 12MW-10S

12MW-02S

Permeable

reactive

barrier

0 500 10

100 FEET

20 METERS

EXPLANATION

Monitoring well and well number, with water-table altitude, in feet above NAVD 88, August 28, 2009 

12MW-13S

Water-table altitude contour,August 28, 2009. Datum is North American Vertical Datum of 1988 (NAVD 88). Dashed where inferred

 1.77

12PZ-10

12PZ-09

12PZ-07

12PZ-08

1.7

N
10 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

NUS, Inc., 2000a), leakage from the UST probably provided a 

more direct input of chlorinated solvents into the groundwater 

than did solvents spilled onto land surface. The tank was 

removed in 1999. Remaining contaminant sources consist of 

releases from solvents sorbed onto clays and aquifer material. 

Once contamination entered the aquifer, it was transported 

approximately eastward, in the direction of groundwater flow, 

toward surface-water bodies east of the site. 

Dechlorination activity takes place in the upgradient 

part of the groundwater contamination (Vroblesky and others, 

2007b). Once beneath the forest in the downgradient part of 

the plume, the chlorinated solvent concentrations substantially 

decrease. Although biodegradation is present in the aquifer 

beneath the forest, the decrease in contaminant concentration 

probably is due primarily to transpirative removal of groundwater VOCs by trees and by sorption (Vroblesky and 

others, 2007a). 

The pronounced eastward movement of the plume 

indicates that there is a groundwater-discharge point in that 

direction. The point of groundwater discharge in the surfacewater features has not yet been determined. The clay layer 

underlying the eastern marsh limits nearshore discharge of 

groundwater to surface water near well 12MW-13S. If there is 

a groundwater-discharge point in the eastern marsh, it is likely 

offshore and localized as a discontinuity or an erosional channel through the clay. It also is possible that the groundwaterdischarge point for water at SWMU12 is the Cooper River or 

the tidally influenced marsh between the Cooper River and the 

eastern marsh (fig. 1). 

Multiple engineered remediation approaches have been 

used at SWMU12. A PRB was installed in December 2002 to 

intercept and remediate groundwater along the main axis of 

the plume (CH2M Hill Constructors, Inc., 2003), but groundwater contamination began moving around the southern end of 

the PRB within 2 years of the PRB’s installation. Engineered 

phytoremediation also has been used as a remediation activity 

at SWMU12. A grove of loblolly pines was planted in the 

source area on May 14, 2003. The loblolly pines have grown 

into a small stand with a low incidence of tree death, despite 

the complete absence of artificial watering and maintenance 

(with the exception of occasional weed control). In contrast, 

hybrid poplar trees planted between wells 12MW-30S and 

12MW-12S and near well 12MW-26S all failed to survive.

Movement of Contamination Around 

the Permeable Reactive Barrier

Groundwater contaminated by VOCs began moving 

around the southern end of the PRB in early 2004. In groundwater at well 12MW-26S prior to January 2004, 1,1-DCE was 

present at 140–150 μg/L, toluene ranged from undetectable 

to 42 μg/L, and the other contaminant VOCs were less than 

the detectable limit of 5 μg/L. By April 2004, however, 

concentrations began rising, and by late 2004 to early 2005, 

VOC concentrations were in the milligrams-per-liter range 

(fig. 6A). Because VOC concentrations at nearby well 12MW23S substantially declined at about the same time they were 

rising in well 12MW-26S, the data indicate a southward shift 

in the plume (fig. 6B). No corresponding shift was observed 

at the north end of the PRB in well 12MW-18S, indicating no 

substantial change in contaminant concentrations around the 

north end of the PRB (fig. 6C).

Figures 7–14 show the generalized distribution of 

selected VOCs in groundwater during a 4-month period 

(July–October 2009) at SWMU12, with emphasis on the area 

downgradient from the southern end of the PRB. The maps 

show several important features of the contamination that are 

discussed in the following paragraphs.

An obvious feature shown by the maps is the fact that 

groundwater contamination now is bypassing the PRB by 

moving around the southern end of the PRB. The contamination moves around the PRB at well 12MW-26S and then 

moves northeastward to intersect the remnants of the original 

plume, located approximately east of the center of the PRB. 

Thus, contamination downgradient from the PRB is a mixture 

of contamination that was present prior to installation of the 

PRB, contamination that moved around the PRB, and probably 

contamination breakdown products from interaction with the 

PRB. Groundwater that likely moved through the central part 

of the PRB is characterized by sharply lowered VOC concentrations downgradient from the PRB relative to upgradient (for 

example, figs. 8–11). 

The extent of the contamination that moved around the 

PRB cannot be determined with certainty, but it is likely that 

it coincides with the 1,4-dioxane plume because 1,4-dioxane 

is highly soluble in groundwater, does not readily bind to 

soils, is resistant to biodegradation (Mallinckrodt Baker, 

Inc., 2008), and appears to form a distinct plume emanating 

from the southern end of the PRB (fig. 7). That extent also 

approximately corresponds to the 1,000-μg/L contour for 

1,1-DCA, cDCE, and PCE and to the 10,000-μg/L contour 

for 1,1-DCE (figs. 8–10, 13). The approximate coincidence of 

these contours and the sharp contrast between the concentrations within and outside of these contours provide supporting 

evidence that the contours represent the approximate extent 

of contamination that moved around the southern end of the 

PRB. Thus, the downgradient extent of contamination that 

has moved around the southern end of the PRB probably is 

between wells 12TW-2009-24 and 12TW-2009-16 (fig. 4). 

Considering that the plume traveled at least 75 ft from the 

PRB to well 12TW-2009-24 after first arriving at the PRB 

(well 12MW-26S), about 4.5 to 5 years prior to installation of 

the temporary wells, the calculated travel rate is at least 15 feet 

per year (ft/yr) during that interval. Because 1,4-dioxane was 

not detected at the next downgradient well (12TW-2009-16), 

approximately 130 ft downgradient from the PRB, the travel 

rate probably is less than about 29 ft/yr.
Movement of Contamination Around the Permeable Reactive Barrier 11 Figure 6. Changes in concentrations of selected volatile organic compounds in groundwater at wells (A)12MW-26S, (B) 12MW-23S, and (C) 12MW-18S near the southern and northern ends of the (D) permeable reactive barrier (PRB), Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 2003–2009. C. 12MW-18S (Northern end of PRB)

0

800600400200

1,000

A. 12MW-26S (Southern end of PRB)

Volatile organic compounds,

in micrograms per liter

 0

8,0006,0004,0002,000

12,000

10,000

B. 12MW-23S (Upgradient from PRB near 

 well 12MW-26S)

 0

5,0004,0003,0002,0001,000

1,1,1-trichloroethane (1,1,1-TCA)1,1-dichloroethane (1,1-DCA)1,1-dichloroethene (1,1-DCE)trichloroethene (TCE)

EXPLANATION

Open symbols indicate that the 

constituent was not detected.

The indicated value was the 

detection limit

2003 2004 2005 2006 2007 2008 2009

2003 2004 2005 2006 2007 2008 2009

2003 2004 2005 2006 2007 2008 2009

D. Location map

Volatile organic compounds,

in micrograms per liter

Volatile organic compounds,

in micrograms per liter

100 FEET

20 METERS

00 10

50

N
12 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

Figure 7. Distribution of 1,4-dioxane in groundwater during 2009, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina.

EasternMarsh

Forest

Forest

Road

Permeable

Reactive

Barrier

Pavement

Pavement

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

Permanent well sampled September 2009 and 1,4-dioxaneconcentration in micrograms per literTemporary well sampled August 2009 and 1,4-dioxane concentration in micrograms per literTemporary well sampled October 2009 and 1,4-dioxane concentration in micrograms per liter

EXPLANATION

<0.5

@A

Permanent well sampled July 2009 and 1,4-dioxane concentration in micrograms per liter

<0.5

@A

100 Line of equal 1,4-dioxane concentration in micrograms per liter. 

Interval variable as shown. Dashed where inferred

<0.5<0.5

100

1,000

<5

<5

<5

<5

<5

<5

16

<5

<5

18

13

11

<5

<5

<5

<5

<5

<5

<5

11

<5

<5

<5

<5

<5

<10

8.3

120

<25

<25

7.6

<50

<25

<50

<25

<25

<25

<10

<500

2,500

1,400

<1,000

<5

<5

<5

<5

<5

2,800

<5

<5

<100

<10 <100 <50

<5

39

<50

75

<100

<500

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

100 FEET

20 METERS 0 10

0 50

N
Movement of Contamination Around the Permeable Reactive Barrier 13 Figure 8. Distribution of 1,1-dichloroethane (1,1-DCA) in groundwater during 2009, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina. [J, estimated value] Eastern Marsh Forest Forest

Road

Permeable

Reactive

Barrier

Pavement

Pavement

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

10

1,000

10

1,000

16

18

15

42

13

84

43

15

87

2.5

4.7

5.2

2.8

6.4

2.4

3.4

1.5

2.1

7.7

2.4

8.7

3.7 2.6

3.8

1.1

<0.5

<0.5

<0.5

<0.5

0.51

<0.5

<0.5 <0.5

0.86

<0.5

<0.5

<2.5

0.66

2,500 4,800

6,500

4,600

0.16J

0.26J

<0.5

0.11J

0.41J

4,200

0.12J

4.4

1,300

58 56

5.9

20

1.4 0.48J

34

1

200

Permanent well sampled September 2009 and 1,1-dichloroethaneconcentration in micrograms per literTemporary well sampled August 2009 and 1,1-dichloroethane concentration in micrograms per literTemporary well sampled October 2009 and 1,1-dichloroethane concentration in micrograms per liter

EXPLANATION

<0.5

@A

Permanent well sampled July 2009 and 1,1-dichloroethane concentration in micrograms per liter

10

<0.5

@A

Line of equal 1,1-dichloroethane concentration in micrograms per liter. Interval variable as shown. Dashed where inferred

<0.5<0.5

100 FEET

20 METERS 0 10

0 50

N
14 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

Figure 9. Distribution of cis-1,2-dichloroethene (cDCE) in groundwater during 2009, Solid Waste Management Unit 12, Naval Weapons Station Charleston, 

North Charleston, South Carolina.

EasternMarsh

Forest

Forest

Road

Permeable

Reactive

Barrier

Pavement

Pavement

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

Permanent well sampled September 2009 andcis-1,2-dichloroethene concentration in micrograms per literTemporary well sampled August 2009 and cis-1,2-dichloroethene concentration in micrograms per literTemporary well sampled October 2009 and cis-1,2-dichloroethene concentration in micrograms per liter

EXPLANATION

<0.5

@A

Permanent well sampled July 2009 and cis-1,2-dichloroetheneconcentration in micrograms per liter

10

<0.5

@A

Line of equal cis-1,2-dichloroethene concentration in micrograms per liter. Interval variable as shown. Dashed where inferred

<0.5<0.5

100

10

1,000

1

1

3

22

76

23

11

22

6.9

3.6

0.6

1.3

200

8.2

280

210

1.4

480

1.8

7.2

510

120

2.2

5.6

6.56.3

2.1

0.73

<0.5

0.63

<0.5

<0.5

<2.5

0.97

<0.5

<0.5 <0.5

<0.5

2,100

2,500

3,900

2,600

<0.5<0.5

<0.5

<0.5

<0.5

73 360

8.3

210

9.6

3,100

34

320

900

1,300

1.1

15 <0.5

100 FEET

20 METERS 0 10

0 50

N
Movement of Contamination Around the Permeable Reactive Barrier 15 Figure 10. Distribution of tetrachloroethene (PCE) in groundwater during 2009, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina. Eastern Marsh

Forest

Forest

Road

Permeable

Reactive

Barrier

Pavement

Pavement

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

1,000

100

10

6

23

69

15

22

20

6.6

3.5

6.9

3.2

130

4.7

330

100

1.7

7.8

0.76

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<2.5

<2.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

0.96

1,300

4,900

6,200

3,200

<0.5

<0.5

<0.5

<0.5

<0.5

Permanent well sampled September 2009 and tetrachloroetheneconcentration in micrograms per literTemporary well sampled August 2009 and tetrachloroetheneconcentration in micrograms per literTemporary well sampled October 2009 and tetrachloroethene concentration in micrograms per liter

EXPLANATION

<0.5

@A

Permanent well sampled July 2009 and tetrachloroethene concentration in micrograms per liter

10

<0.5

@A

Line of equal tetrachloroethene concentration in micrograms per liter.Interval variable as shown. Dashed where inferred

<0.5<0.5

150

5

16

3,200

68 <0.5

<0.5

1.3

2.2J

370

390 780

42

100 FEET

20 METERS 0 10

0 50

N
16 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

Figure 11. Distribution of trichloroethene (TCE) in groundwater during 2009, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina.

EasternMarsh

Forest

Forest

Road

Permeable

Reactive

Barrier

Pavement

Pavement

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@

10

10

500

100

1,000

10

Permanent well sampled September 2009 and trichloroetheneconcentration in micrograms per literTemporary well sampled August 2009 and trichloroetheneconcentration in micrograms per literTemporary well sampled October 2009 and trichloroethene concentration in micrograms per liter

EXPLANATION

<0.5

@A

Permanent well sampled July 2009 and trichloroethene concentration in micrograms per liter

10

<0.5

@A

Line of equal trichloroethene concentration in micrograms per liter.Interval variable as shown. Dashed where inferred

<0.5<0.5

1

7

3

14

87

15

78

33

47

32

170

560

7.3

270

1.5

150 190

690

640

240

390

340

670

370

460

160

540

<0.5 0.79

<0.5

<2.5

0.89

<0.5

<0.5 <0.5

<0.5

2,800

5,700

6,700

4,400

2,600

1,000

<0.5

<0.5

<0.5

<0.5

<0.5

110H

900

150

1,100

480 450 2.8 180

89

4,300

<0.5

5,200

39

100 FEET

20 METERS 0 10

0 50

N
Movement of Contamination Around the Permeable Reactive Barrier 17 Figure 12. Distribution of 1,1,1-trichloroethane (1,1,1-TCA) in groundwater during 2009, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina. Eastern Marsh Forest Forest

Road

Permeable

Reactive

Barrier

Pavement

Pavement

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

100

1

100

1,000

1

<1

43

43

<1

390

8.7

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<2.5

<2.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<2.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<2.5

<0.5

<2.5

<0.5

1,400

1,400

1,100

520

100

<10

14

<0.5

1.4

2.6

2.7 49 <5

<0.5

<0.5

<0.5 <0.5

<0.5

<0.5

<0.5

150

Permanent well sampled September 2009 and 1,1,1-trichloroethane concentration in micrograms per literTemporary well sampled August 2009 and 1,1,1-trichloroethane concentration in micrograms per literTemporary well sampled October 2009 and 1,1,1-trichloroethane concentration in micrograms per liter

EXPLANATION

<0.5

@A

Permanent well sampled July 2009 and 1,1,1-trichloroethane concentration in micrograms per liter

10

<0.5

@A

Line of equal 1,1,1-trichloroethane concentration in micrograms per liter. Interval variable as shown. Dashed where inferred

<0.5<0.5

100 FEET

20 METERS 0 10

0 50

N
18 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

Figure 13. Distribution of 1,1-dichloroethene (1,1-DCE) in groundwater during 2009, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina.

EasternMarsh

Forest

Forest

Road

Permeable

Reactive

Barrier

Pavement

Pavement

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

100

100

100

100

1,000

10,000

26

11

64

21

67

71

96

87 86

40

45

110

260

260

260

100

160

360

210

140

6.9

150

340

510

100

110

310

350

170

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

8,600

1,100

1,900

1,100

15,000

18,000

12,000

10,000

<0.5

1.7J

<0.5

<0.5 <0.5

<0.5

100

3,800

310

290 870

64

540

45

37

540

370

Permanent well sampled September 2009 and 1,1-dichloroethene concentration in micrograms per literTemporary well sampled August 2009 and 1,1-dichloroethene concentration in micrograms per literTemporary well sampled October 2009 and 1,1-dichloroethene concentration in micrograms per liter

EXPLANATION

<0.5

@A

Permanent well sampled July 2009 and 1,1-dichloroethene concentration in micrograms per liter

10

<0.5

@A

Line of equal 1,1-dichloroethene concentration in micrograms per liter. Interval variable as shown. Dashed where inferred

<0.5<0.5

100 FEET

20 METERS 0 10

0 50

N
Movement of Contamination Around the Permeable Reactive Barrier 19 Permeable Reactive Barrier Pavement Pave- ment Eastern Marsh

Forest

Forest

Road

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A

@A 0.21

0.85

13

<1 <10 37

510

95

50 200

17

47

59

<0.5

<0.5

<0.5

<0.5

<0.5

100

100

10

10

4 <1

11

<5

68

<5

<1

<50

<50

3.3

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<100

<2.5

<2.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<0.5

<2.5

<0.5

<0.5

<2.5

<0.5

<2.5

<0.5

100 FEET

20 METERS 0 10

0 50

N

Permanent well sampled September 2009 andvinyl chloride concentration in micrograms per literTemporary well sampled August 2009 and vinyl chloride concentration in micrograms per literTemporary well sampled October 2009 and vinyl chloride 

concentration in micrograms per liter

Explanation

<0.5

@A

Permanent well sampled July 2009 and vinyl chloride concentration in micrograms per liter

10

<0.5

@A

Line of equal vinyl chloride concentration in micrograms per liter. Interval variable as shown. Dashed where inferred

<0.5<0.5

Figure 14. Distribution of vinyl chloride (VC) in groundwater during 2009, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina.
20 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

The southern contamination curves northeastward and 

joins the former contamination rather than tracking as a 

separate plume (figs. 9–13). Such curvature is characteristic 

of water movement around an impermeable barrier, but it also 

may indicate that the location of the original contamination 

may partly be controlled by lithology. That is, the contamination extending along the original axis of the plume may be 

moving through an area of higher hydraulic conductivity than 

the surrounding areas, such as a paleochannel.

The figures showing the distribution of contamination 

also illustrate a substantial decrease in contaminant concentrations from the upgradient to the downgradient sides of the 

PRB near the central part of the PRB. It is likely that much of 

that decrease represents contaminant destruction by the PRB. 

Potential Causes for Movement of 

Contamination Around the Southern End 

of the Permeable Reactive Barrier 

The diversion of contamination around the southern 

end of the PRB is likely caused by a permeability reduction 

associated with the abandoned trench or the PRB. If there 

was occlusion at the abandoned trench or in the PRB, then 

some level of groundwater mounding probably took place. 

Monitoring wells a few feet from the PRB on the upgradient 

and downgradient sides were installed at the time that the PRB 

was installed, so no data are available from those wells prior 

to installation of the PRB. Hydraulic gradient values across 

the PRB from the upgradient to the downgradient sides in the 

northern, middle, and southern parts of the PRB are shown 

in figure 15. Groundwater mounding, if it occurred, probably 

would be reflected by an increase in the hydraulic gradient 

(head difference divided by horizontal distance) across the 

PRB. The data are relatively variable (fig. 15) because the 

short distance between the wells (about 14–18 ft) magnifies 

the measurement uncertainty in the hydraulic-gradient calculation, as opposed to hydraulic gradients between wells farther 

apart. Although the data could indicate a continuing increase 

in hydraulic gradient in the northern part of the PRB (fig. 15A) 

and an initial increase in the central and southern parts of 

the PRB, the measurements are mostly within the range of 

measurement uncertainty (fig. 15B, C). Thus, the data are not 

precise enough to indicate a clear and substantial increase in 

hydraulic gradient across the PRB. 

A record of hydraulic gradients prior to installation of 

the PRB can be seen by comparing water levels from older 

monitoring wells, more distant from the PRB than those in 

figure 15. The hydraulic gradient from well 12MW-03S (about 

56 ft upgradient from the PRB) to well 12MW-05S (about 

61 ft downgradient of the PRB) increased rapidly within the 

2 months following the installation of the PRB (fig. 16A). 

The average hydraulic gradient after installation of the PRB 

(0.00156 from January 2003 to August 2006) was more than 

double the hydraulic gradient prior to installation (0.00069 

from August 2000 to November 2002). The change also can 

be seen in the approximate doubling of hydraulic gradient 

from well 12MW-02S to well 12MW-05S (fig. 16B). A slight 

increase in hydraulic gradient between well 12MW-10S and 

well 12MW-05S also is apparent during the same time frame 

(fig. 16C). 

Much construction was taking place near the PRB in 

November and December 2002, so one possible explanation 

for the apparent shift in hydraulic gradient is that a piece of 

machinery disturbed the measuring points of the wells. It 

seems unlikely, though, that construction disturbed all of the 

upgradient wells in the same way. It also is possible that the 

measuring point on well 12MW-05S was disturbed during 

this period. This, too, seems unlikely because there were no 

construction activities near well 12MW-05S and because the 

hydraulic gradient from well 12MW-03S to well 12MW-05I 

(adjacent to well 12MW-05S but screened 5 ft deeper) showed 

Figure 15. Hydraulic gradients from the upgradient to the 

downgradient sides of the permeable reactive barrier (PRB) 

in the (A) northern, (B) central, and (C) southern parts, with 

the horizontal lines representing average values, Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, 

North Charleston, South Carolina, 2003–2009.

A. Well 12MW-27S to 12MW-20S (North part of PRB)

 2003 2004 2005 2006 2007 2008 2009 

Hydraulic gradient, 

in foot per foot

0.000 

0.002

0.004

0.006

0.008

0.010

B. Well 12MW-28S to 12MW-22S (Central part of PRB)

 2003 2004 2005 2006 2007 2008 2009 

 2003 2004 2005 2006 2007 2008 2009 

0.000

0.002

0.004

0.006

0.008

0.010

C. Well 12MW-23S to 12MW-25S (Southern part of PRB)

0.000

0.002

0.004

0.006

0.008

0.010

Hydraulic gradient, 

in foot per foot

Hydraulic gradient, 

in foot per foot
Movement of Contamination Around the Permeable Reactive Barrier 21

Figure 16. Hydraulic gradients over time from wells (A) 12MW-03S to 12MW-05S, (B) 12MW-02S to 12MW-05S, (C) 12MW-10S 

to 12MW-05S, and (D) 12MW-03S to 12MW-05I, and (E) a map showing the locations of the hydraulic-gradient comparisons, the 

collapsed trench, and the existing permeable reactive barrier (PRB), Solid Waste Management Unit 12, Naval Weapons Station 

Charleston, North Charleston, South Carolina, 2000–2006.

A. 12MW-03S to12MW-05S

Hydraulic gradient, 

in foot per foot

0.0005

0.0010

0.0015

0.0020

0.0025

B. 12MW-02S to 12MW-05S

0.0000

0.0005

0.0010

0.0015

0.0020

0.0025

D. 12MW-03S to 12MW-05I

 2000 2001 2002 2003 2004 2005 2006 

-0.0005

0.0000

0.0005

0.0010

0.0015

0.0020

C. 12MW-10S to 12MW-05S

0.0000

0.0005

0.0010

0.0015

0.0020

0.0025

Hydraulic gradient, 

in foot per foot

Hydraulic gradient, 

in foot per foot

Hydraulic gradient, 

in foot per foot

EXPLANATION

Average hydraulic gradient from 

 August 2000 to November 2002

Average hydraulic gradient from 

 February 2003 to December 2005

Prior to installation of the 

 permeable reactive barrier

After installation of the 

 permeable reactive barrier

 2000 2001 2002 2003 2004 2005 2006 

 2000 2001 2002 2003 2004 2005 2006 

 2000 2001 2002 2003 2004 2005 2006 

E. Location of hydraulic-gradient comparisons

Back-lled

 trench

PRB

A@

A@

A@A@

A@A@A@

A@

A@

A@

A@

A@

A@

A@

A@A@

A@

A@

A@A@

A@A@

A@

A@

A@

A@

A@

A@

A

C

B

12MW-10S

12MW-02S

12MW-03S

12MW-05I

12MW-05S Collapsed trench

D

100 FEET

0 10 20 METERS

0 50

N
22 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

a similar increase (fig. 16D). Therefore, the data appear to 

indicate that there was a rapid increase in hydraulic gradient 

at the time of construction of the PRB. A likely reason for the 

hydraulic-gradient increase is occlusion of the aquifer associated with the PRB installation.

One event that took place during installation of the PRB 

that may have caused permeability loss is the collapse and 

abandonment of the original trench planned for the PRB. The 

abandoned trench was approximately 25 ft upgradient (west) 

from the final location of the PRB and extended into clay 

below the contaminated part of the aquifer (fig. 16E). The 

northernmost 90 ft of the trench collapsed between November 11 and 13, 2002, expanding from a width of about 3 ft to 

a width of about 15 to 20 ft in the northernmost 50 ft and to a 

width of about 10 ft in the part of the trench from 50 to 70 ft 

from the northern end (fig. 16E) (CH2M Hill Constructors, 

Inc., 2003). The sidewalls of the trench collapsed, and the 

trench, originally about 35 ft deep, was filled in an average 

of 12 ft (CH2M Hill Constructors, Inc., 2003), or about 10 ft 

below the main body of contamination. The preconstruction 

lithology consisted of about 10 ft of clay extending from land 

surface to the contaminated aquifer. Membrane Interface Logs 

showed that the vertical location of the contamination prior to 

the construction was immediately below the clay (Columbia 

Technologies, written commun., 2003). With the collapse of 

the sidewalls, it is likely that the overlying clay collapsed into 

the contaminated zone. Thus, one potential source of aquifer 

permeability reduction associated with the PRB installation 

is the presence of clay collapsed into the contaminated target 

zone and possibly to a depth of 10 ft below the contamination. 

A second potential source of permeability loss associated 

with the abandoned trench is that biopolymer slurry was used 

to stabilize the trench during excavation. The polymer slurry 

consisted of guar gum (Rantec G-150) with antimicrobial 

preservative (Troysan T-142), to prevent microbial degradation 

of the slurry during use, and soda ash to raise the pH (CH2M 

Hill Constructors, Inc., 2003). Guar gum has been shown to 

cause permeability loss in PRBs due to incomplete removal 

(Savoie and others, 2003) or by introduction of significant 

amounts of guar-derived organic carbon into the subsurface 

(Crane and others, 2004). Guar gum also is suspected to 

enhance microbial sulfate reduction and precipitation of iron 

sulfides by providing a source of carbon and electron donors 

(Johnson and others, 2008).

When the trench collapsed, it collapsed with the 

biopolymer slurry in the trench. As a corrective action, the 

trench was backfilled with material originally removed from 

the trench, which would have included a substantial amount 

of clay. As the trench was backfilled, the biopolymer slurry 

that was not trapped in the collapsed matrix, or entrapped 

by the backfilled material, collected on the surface and was 

removed by pumping (CH2M Hill Constructors, Inc., 2003). 

Unrecovered biopolymer slurry would have been entrapped 

in the more permeable material rather than in the collapsed 

clay. Parts of the abandoned trench where clay collapsed into 

the contaminated horizon would have experienced aquifer 

occlusion by virtue of the clay barrier, and parts of the 

abandoned trench where sand collapsed into the contaminated 

horizon would have experienced aquifer occlusion by virtue 

of the guar gum entrapped in the collapsed sand. The presence 

of antimicrobial preservative in the biopolymer slurry likely 

substantially delayed or prevented breakdown of the slurry 

by naturally occurring microbial processes. Therefore, the 

collapsed barrier probably was a major contributing factor in 

diverting contaminant flow from its original flow path. 

It also is possible that permeability reduction took place 

within the PRB at the time of installation by virtue of the 

guar gum slurry that was used to support the sides of the PRB 

trench prior to placement of the ZVI and sand. After placement of the iron and sand, the bulk of the slurry was removed 

from the barrier by pumping and circulating using temporary 

6-inch diameter slotted PVC pipes in the PRB (CH2M Hill 

Constructors, Inc., 2003). A liquid enzyme breaker (LEB-H) 

was circulated through the barrier to induce microbial degradation of the guar gum slurry; the circulation continued until 

the pH of the biopolymer slurry was reduced from about 10 to 

less than 6.5 (CH2M Hill Constructors, Inc., 2003). Persistence and degradation of the biopolymer slurry can be seen 

in the total organic carbon (TOC) data from wells screened 

in or at the edge of the PRB (fig. 17A, B, C). The TOC 

concentrations in the PRB were elevated following installation 

and declined thereafter, reflecting removal of the guar gum 

slurry and enzyme breaker. The TOC decline was relatively 

slow, however. Other studies have reported guar gum removal 

after about 6 to 9 months (Sivavec and others, 2001; Crane 

and others, 2004). At SWMU12, TOC concentrations (less 

than 100 milligrams per liter (mg/L)) in wells screened in the 

northern and southern parts of the PRB persisted for about 

21 months following installation of the PRB (fig. 17A, C). 

During that time, there was a potential for reduced permeability in the PRB at those locations. The decline in TOC 

concentrations from greater than 900 mg/L in the northern part 

and greater than 400 mg/L in the southern part of the PRB to 

concentrations less than 100 mg/L by February 2005 probably 

means that the biopolymer slurry eventually was removed or 

was substantially diminished at those locations. 

In contrast, the TOC concentrations in the PRB near 

its midpoint remained elevated at least through May 2005, 

30 months after installation (fig. 17B). These data probably 

mean that guar gum persisted at that location and probably 

was accompanied by reduced permeability. Thus, some level 

of permeability reduction probably persisted during at least the 

first year or more following installation. Additional evidence is 

that the hydraulic gradient in the short distance between wells 

(about 14 to 18 ft) across the PRB is substantially steeper 

(fig. 15) than the gradient across the PRB measured in more 

distal wells (fig. 16). The steepest gradient across the PRB 

is in the central part (fig. 15B). Thus, most of the change in 

hydraulic gradient measured between distal wells takes place 

across the PRB.

Mineral precipitation may also cause permeability loss 

in the PRB. Anaerobic corrosion of ZVI is accompanied by 
Movement of Contamination Around the Permeable Reactive Barrier 23

an increase in dissolved iron, pH, and hydrogen (Henderson 

and Demond, 2007), as observed at the PRB in SWMU12. 

Wilkin and Puls (2003) showed that for such iron reactions, 

an increase in pH is accompanied by a decrease in redox 

potential. In this reducing alkaline environment, precipitation 

of solids from native groundwater constituents is favored, 

leading to the loss of permeability and possible reduction in 

the reactivity of the ZVI (Henderson and Demond, 2007). 

Typical precipitates include iron (hydr)oxides, iron and 

calcium carbonates, iron sulfides, and green rusts (Liang and 

others, 2003; Jambor and others, 2005). Much of the sulfur 

precipitation can occur in the native aquifer just upgradient 

from the PRB (Johnson and others, 2008).

Precipitation of iron sulfides probably is taking place in 

the PRB. Measured sulfate concentrations upgradient from 

the PRB (well 12MW-28S) range from about 4 to 15 mg/L 

(April 2003 to September 2009), but sulfate concentrations 

downgradient from the PRB (well 12MW-22S) started out at 

about 8 mg/L (April 2003) and rapidly declined to concentrations typically below 1.3 mg/L (July 2003 to September 2009). 

The loss of sulfate indicates that sulfate reduction was taking 

place within or immediately upgradient from the PRB. Further 

evidence for sulfate reduction is the observation that sulfide 

was undetectable in the upgradient well (less than 0.05 mg/L) 

and was detectable at concentrations of 0.075 to 0.2 mg/L 

during approximately half of the sampling events downgradient from the PRB. Sulfide from sulfate reduction has a strong 

tendency to precipitate as iron sulfide in the presence of Fe(II). 

Therefore, iron sulfides may also precipitate within the PRB. 

Despite the probable permeability reduction in and near 

the PRB immediately following installation, there is evidence 

that contaminants moved through the PRB and were degraded, 

which is consistent with the planned purpose of the PRB. 

The concentrations of most VOCs on the downgradient side 

Figure 17. Changes in the total organic carbon content of groundwater in the (A) northern, 

(B) central, and (C) southern parts of the permeable reactive barrier (PRB), Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

2003–2009.

B. Center of PRB

2003 2004 2005 2006 2007 2008 2009 

0

200

400

600

800

1,000

Upgradient well 

(12MW-28S)

In PRB well 

(12MW-21S) 

Downgradient well 

(12MW-22S)

C. Southern part of PRB

2003 2004 2005 2006 2007 2008 2009 

0

200

400

600

800

1,000

Upgradient well 

(12MW-23S)

In PRB well 

(12MW-24S)

Downgradient well 

(12MW-25)

A. Northern part of PRB

2003 2004 2005 2006 2007 2008 2009 

Total organic carbon, 

in milligrams per liter

0

200

400

600

800

1,000

Upgradient well 

(12MW-27S)

In PRB well 

(12MW-19S)

Downgradient well 

(12MW-20S)

Total organic carbon, 

in milligrams per liter Total organic carbon, in milligrams per liter
24 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

Figure 18. Changes in concentrations of selected volatile organic compounds in groundwater at wells (A and B) 12MW-22S and 

(C) 12MW-28S near the permeable reactive barrier (PRB), and (D) locations of wells and the PRB, Solid Waste Management Unit 12, 

Naval Weapons Station Charleston, North Charleston, South Carolina, April 2003–2009.

A@

A@

A@A@

A@A@A@

A@

A@

A@

A@

A@

A@

A@

A@A@

A@

A@

A@A@

A@A@

A@

A@

A@

A@

A@

A@

12MW-28S

12MW-22S

PRB

Collapsed trench

Back-lled

 trench

12MW-03S

Volatile organic compounds,

in micrograms per liter

Vinyl chloride, 

in micrograms per liter

A. 12MW-22S D. Location map

Volatile organic compounds,

in micrograms per liter

 0

2,000

4,000

6,000

8,000

2003 2004 2005 2006 2007 2008 2009

1,1,1-trichloroethane (1,1,1-TCA)

1,1-dichloroethane (1,1-DCA)

1,1-dichloroethene (1,1-DCE)

EXPLANATION

Open symbols indicate that the 

constituent was not detected.

The indicated value was the 

detection limit

B. 12MW-22S 

Trichloroethene,

in micrograms per liter

 0

4,000

8,000

12,000

16,000

Vinyl chloride, 

in micrograms per liter

0

50

100

150

200

250

300

2003 2004 2005 2006 2007 2008 2009

trichloroethene (TCE)

vinyl chloride (VC)

C. 12MW-28S 

2003 2004 2005 2006 2007 2008 2009 0

5,000

10,000

15,000

20,000

25,000

0

100

200

300

400

500

100 FEET

0 10 20 METERS

0 50

N
Movement of Contamination Around the Permeable Reactive Barrier 25

of the PRB rapidly decreased (fig. 18A, B), while concentrations on the upgradient side remained constant for several 

years (fig. 18C). An exception was VC, which substantially 

increased in concentration in 2005, consistent with extensive 

degradation of parent chlorinated solvents and transport to an 

environment less conducive to VC degradation. These data 

indicate movement of contamination through the PRB with 

contaminant degradation down to VC. These data and the 

decline in sulfate concentrations from the upgradient to the 

downgradient side of the PRB likely indicate water movement 

through the PRB and sulfate reduction within or immediately 

upgradient from the PRB. Thus, the central part of the PRB 

appears to have performed its role of degrading chlorinated 

solvents, at least until 2007.

In 2007, after 4 years of relative stability, VOC concentrations began substantially declining on the upgradient side of 

the PRB along the central part of the PRB at well 12MW-28S 

(fig. 18C). The cause of the decline has not been determined, 

but may be related to one or more of a number of factors. 

VOC concentrations upgradient from well 12MW-28S at 

well 12MW-03S (fig. 18D) were in the tens of thousands of 

micrograms per liter range in 2001 and thereafter substantially 

declined to concentrations of mostly less than a few hundred 

micrograms per liter (figs. 19B, 20B, 21B). Thus, the concentration decline in well 12MW-28S may simply be a reflection 

of declining concentrations from the passage of a contaminant 

pulse. Another possible explanation for the contamination 

decline at well 12MW-28S, however, is that the VOCs in 

groundwater at well 12MW-28S reflect the eventual dissipation of a body of contamination cut off from the plume by the 

collapsed trench (fig. 18D). In this scenario, the main body of 

contamination upgradient from the collapsed trench may be 

in the process of being entirely diverted around the PRB. The 

decline also may be due to a combination of the above factors.

Fate of Contamination Downgradient from the 

Permeable Reactive Barrier

VOC contamination in groundwater downgradient from 

the PRB is subject to several attenuating processes. A previous 

investigation showed that once beneath the forest, the groundwater contamination transport rate slows, and substantial VOC 

removal by phytovolatilization takes place during the active 

growing season (Vroblesky and others, 2007b). In addition, 

sorption onto the aquifer and clay matrices and biodegradation 

are active removal mechanisms at SWMU12 (Vroblesky and 

others, 2007b). The primary biodegradation processes involve 

dechlorination of PCE to TCE, TCE to cDCE, and 1,1,1-TCA 

to 1,1-DCE. 

Substantial changes in groundwater-contaminant 

concentrations took place at some monitoring wells at 

SWMU12 during this investigation (figs. 19, 20, 21). In the 

mid-groundwater contamination plume downgradient from 

the PRB, multiple wells showed apparent pulses of increased 

contaminant concentrations (fig. 19C, D, F; fig. 20C, D, F; 

fig. 21D, F). For example, a pulse of increased PCE concentrations was detected at wells 12MW-05S and 12MW-29S during 

2005–2006 (fig. 19C, 19F). A pulse of increased PCE concentrations appears to peak in early 2008 at well 12MW-12S, 

which is 133 ft downgradient from well 12MW-05S and 68 ft 

downgradient from well 12MW-29S (fig. 19D). It is possible 

that the pulse detected at well 12MW-12S is the downgradient arrival of the pulse seen a few years earlier at wells 

12MW-05S and 12MW-29S.

Alternatively, the pulse of increased VOC contamination 

at well 12MW-12S may be the result of lateral shifting of the 

plume axis. The axis of maximum PCE and TCE concentrations probably is less than 25 ft wide (figs. 10, 11). Relatively 

small lateral shifts in the plume axis potentially could result in 

relatively large differences in contaminant concentration at a 

given location. Supporting evidence for lateral shifting is the 

data indicating that at about the same time that the PCE and 

TCE pulse began appearing at well 12MW-12S, the concentrations in nearby well 12MW-17S (16 ft to the southeast) began 

decreasing (figs. 4, 19E). Thus, the plume may have shifted 

northward. 

Additional evidence for a plume shift can be seen in 

the fact that the PCE, TCE, and 1,1,-DCE concentrations 

at well 12MW-12S had been relatively high in early 2002, 

followed by a sharp decrease in concentration between 

September 2003 and January 2003 (figs. 19D, 21D). This 

decrease was not due to contaminant degradation because the 

degradation product cDCE also decreased in concentration 

(fig. 20D). One important event that took place during that 

time frame that appears to have had an immediate influence 

on the groundwater hydraulics was the activity associated 

with construction of the PRB during November and December 2002. As previously discussed in this report, a definitive 

change in the site hydrology likely took place at the time of 

the construction activity. Movement of contaminants around 

the southern end of the PRB is evidence of a distinct change 

in the direction of the hydraulic gradient. Thus, the sharp 

decrease in contaminant concentrations at well 12MW-12S 

in 2003 likely was the result of a southward shift in the axis 

of contamination related to construction of the PRB. The 

increasing concentrations at well 12MW-12S and decreasing 

concentrations at well 12MW-17S in 2006 may be related 

to a northward shift in the axis of contamination. A previous 

investigation showed that the hydraulic gradient at the toe of 

the contamination plume probably began shifting northeastward in late 2004 as a result of stage-level changes in George’s 

Pond (Vroblesky and others, 2007b). 

The areal distribution of PCE and TCE also indicates a 

possible northeastward transport path (figs. 10, 11). Figure 11 

shows that the highest TCE concentrations detected at the eastern (downgradient) end of the plume were 670 μg/L at well 

12TW-2009-13 and 340 μg/L at well 12TW-2009-14. There 

is some uncertainty about the actual northeastward extent 

of the contamination. When the temporary wells were being 

installed and sampled in August 2009, multiple locations near 

well 12TW-2009-15 at depths of 8.5 to 12.5 ft were dry holes 
26 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

Figure 19. Concentrations of tetrachloroethene (PCE) and trichloroethene (TCE) over time in groundwater at selected wells in 

the groundwater-contamination plume, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, August 2000–2009.

B. 12MW-03S

 2000 2002 2004 2006 2008 2010 

 0 

4,000

8,000

12,000

16,000

20,000

A. 12MW-10S

 2000 2002 2004 2006 2008 2010 

PCE and TCE, 

in micrograms per liter

 0 

2,000

4,000

6,000

8,000

10,000

G. 12MW-13S

 2000 2002 2004 2006 2008 2010 

0

5

10

15

20

0

10

20

30

40

50

60

E. 12MW-17S

 2000 2002 2004 2006 2008 2010 

0

20

40

60

80

100

120

0

200

400

600

800

Upgradient Part of Groundwater Contamination Plume

Mid-Groundwater Contamination Plume

C. 12MW-05S

 2000 2002 2004 2006 2008 2010 

 0

1,000

2,000

3,000

4,000

TCE, in 

micrograms per liter

 0 

10,000

20,000

30,000

D. 12MW-12S

 2000 2002 2004 2006 2008 2010 

0

50

100

150

200

250

 0

1,000

2,000

3,000

4,000

Downgradient Part of Groundwater 

 Contamination Plume

Tetrachloroethene (PCE)

EXPLANATION

Open symbols indicate

that the constituent was

not detected. The indicated

value is the detection limit

F. 12MW-29S

 2000 2002 2004 2006 2008 2010 

 0

 200

 400

 600

 800

1,000

 0

1,000

2,000

3,000

4,000

5,000

6,000

Trichloroethene (TCE)

TCE, in 

micrograms per liter

TCE, in 

micrograms per liter

TCE, in 

micrograms per liter

TCE, in 

micrograms per liter

PCE and TCE, 

in micrograms per liter

PCE, in 

micrograms per liter PCE, in 

micrograms per liter PCE, in micrograms per liter

PCE, in 

micrograms per liter

PCE, in 

micrograms per liter
Movement of Contamination Around the Permeable Reactive Barrier 27

Figure 20. Concentrations of cis-1,2-dichloroethene (cDCE) and vinyl chloride (VC) over time in groundwater at selected wells in 

the groundwater-contamination plume, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, August 2000–2009.

D. 12MW-12S

 2000 2002 2004 2006 2008 2010 

0

20

40

60

80

100

120

140

160

180

0

20

C. 12MW-05S

 2000 2002 2004 2006 2008 2010 

 0

 500

1,000

1,500

2,000

2,500

3,000

0

100

200

300

400

500

B.12MW-03S

 2000 2002 2004 2006 2008 2010 

 0 

4,000

8,000

12,000

16,000

 0 

4,000

8,000

12,000

16,000

20,000

A. 12MW-10S

 2000 2002 2004 2006 2008 2010 

cDCE, in 

micrograms per liter

 0 

2,000

4,000

6,000

8,000

10,000

12,000

14,000

VC, in 

micrograms per liter

 0

 500

1,000

1,500

2,000

2,500

E. 12MW-17S

 2000 2002 2004 2006 2008 2010 

0

10

20

30

40

50

60

70

0

10

20

30

40

50

cis-1,2-Dichloroethene (cDCE)

Vinyl chloride (VC)

EXPLANATION

Open symbols indicate

that the constituent was

not detected. The indicated

value is the detection limit

F. 12MW-29S

 2000 2002 2004 2006 2008 2010 

0

100

200

300

400

500

600

700

0

20

40

60

80

VC, in 

micrograms per liter

cDCE, in 

micrograms per liter cDCE, in 

micrograms per liter

cDCE, in 

micrograms per liter

cDCE, in 

micrograms per liter cDCE, in 

micrograms per liter

10

VC, in 

micrograms per liter

VC, in 

micrograms per liter

VC, in 

micrograms per liter

VC, in 

micrograms per liter

Upgradient Part of Groundwater Contamination Plume

Mid-Groundwater Contamination Plume
28 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

Figure 21. Concentrations of 1,1,1-trichloroethane (1,1,1-TCA), 1,1-dichloroethane (1,1-DCA), and 1,1-dichloroethene (1,1-DCE) 

over time in groundwater at selected wells in the groundwater-contamination plume, Solid Waste Management Unit 12, Naval 

Weapons Station Charleston, North Charleston, South Carolina, August 2000–2009.

Mid-Groundwater Contamination Plume

C.12MW-05S

 2000 2002 2004 2006 2008 2010 

 0

 500

1,000

1,500

2,000

2,500

3,000

 0

5,000

10,000

15,000

20,000

B.12MW-03S

 2000 2002 2004 2006 2008 2010 

 0 

20,000

40,000

60,000

80,000

100,000

 0

10,000

20,000

30,000

40,000

50,000

A.12MW-10S

 2000 2002 2004 2006 2008 2010 

1,1,1-TCA, in 

micrograms per liter

 0 

10,000

20,000

30,000

40,000

1,1-DCA and 1,1-DCE, in 

 0 

micrograms per liter

10,000

20,000

30,000

40,000

D.12MW-12S

 2000 2002 2004 2006 2008 2010 

0

50

100

150

200

 0

 200

 400

 600

 800

1,000

E.12MW-17S

 2000 2002 2004 2006 2008 2010 

0

20

40

60

80

100

0

100

200

300

400

G.12MW-13S

 2000 2002 2004 2006 2008 2010 

0

20

40

60

80

100

0

20

40

60

80

100

120

140

F.12MW-29S

 2000 2002 2004 2006 2008 2010 

0

100

200

300

400

500

 0

 500

1,000

1,500

2,000

2,500

1,1,1-Trichloroethane (1,1,1-TCA)

1,1-Dichloroethane (1,1-DCA)

1,1-Dichloroethene (1,1-DCE)

EXPLANATION

Open symbols indicate

that the constituent was

not detected. The indicated

value is the detection limit

1,1,1-TCA, in 

micrograms per liter

1,1,1-TCA, in 

micrograms per liter 1,1,1-TCA, in 

micrograms per liter

1,1,1-TCA, in 

micrograms per liter

1,1,1-TCA, in 

micrograms per liter

1,1,1-TCA, in 

micrograms per liter

1,1-DCA and 1,1-DCE, in 

micrograms per liter

1,1-DCA and 1,1-DCE, in 

micrograms per liter

1,1-DCA and 1,1-DCE, in 

micrograms per liter

1,1-DCA and 1,1-DCE, in 

micrograms per liter

1,1-DCA and 1,1-DCE, in 

micrograms per liter 1,1-DCA and 1,1-DCE, in 

micrograms per liter

Downgradient Part of Groundwater 

 Contamination Plume

Upgradient Part of Groundwater Contamination Plume
References 29

even though they were screened at the same depth as nearby 

wells. Thus, the contaminated sand horizon present at well 

12TW-2009-13 was not present in some areas northeast of the 

well, even though the configuration of the TCE plume implies 

a northeastward transport direction. It is possible that the sand 

horizon at well 12TW-2009-13 is stratigraphically deeper 

toward the northeast and was below the horizon investigated 

with the temporary wells. Further investigations northeast of 

well 12TW-2009-13 are needed to resolve this question.

The eventual discharge point of contaminated groundwater to surface water is not known at this time. The presence 

of TCE and 1,1-DCE at well 12MW-13S (figs. 19G, 21G) and 

the absence of VOCs at nearby well 12MW-06S indicate that 

well 12MW-13S intersects a transport pathway of groundwater 

contamination to a potential discharge point in the eastern 

marsh. The areal distribution of TCE in wells during 2009, 

however, indicates a more northeasterly direction of transport 

(fig. 11). Additional temporary wells and installation of a 

piezometer north of well 12MW-12S and east of well 12PZ-09 

(fig. 5) potentially could clarify the transport direction.

The fate and behavior of the plume in the forest likely 

will be difficult to monitor based on future well sampling 

because the present axis of maximum contamination in that 

area bypasses all but one of the existing monitoring wells 

(12MW-12S) (figs. 9–11, 13). Moreover, the 2009 data 

indicate that there are no optimally placed sentinel wells in the 

probable path of contaminant transport. Thus the monitoring 

network is no longer adequate to monitor the groundwater 

contamination downgradient from the PRB.

Summary

The U.S. Geological Survey (USGS) and the Naval 

Facilities Engineering Command Southeast have investigated 

natural and engineered remediation of groundwater contamination since 2000 at Solid Waste Management Unit 12 at the 

Naval Weapons Station Charleston, North Charleston, South 

Carolina. The primary volatile organic compounds (VOCs) 

of concern are tetrachloroethene (PCE), 1,1,1-trichloroethane 

(1,1,1-TCA), trichloroethene (TCE), cis-1,2-dichloroethene 

(cDCE), vinyl chloride (VC), 1,1-dichloroethene (1,1-DCE), 

and 1,1-dichloroethane (1,1-DCA).

The groundwater contamination, consisting of chlorinated 

aliphatic VOCs, extends eastward at least 400 feet (ft) in the 

surficial aquifer from former building 88. 1,1,1-TCA and PCE 

are compounds that probably were original contaminants and 

are found in relatively high concentrations in groundwater 

adjacent to the eastern side of former building 88 and the 

former location of the underground storage tank. TCE probably is both an original contaminant and a transformation 

product. Many of the less chlorinated compounds, such as 

cDCE and VC, probably are transformation products of parent 

compounds. At least one compound, however, 1,1-DCE, is an 

abiotic derivative of 1,1,1-TCA. 

The central part of the permeable reactive barrier (PRB), 

along the main axis of the contaminant plume, appears to be 

actively removing contamination. Evidence for the removal is 

that substantial concentration decreases have taken place on 

the downgradient edge of the PRB at well 12MW-22S along 

the major axis of the contaminant plume. In contrast to data 

from the central area of the PRB, the data from the southern 

end of the PRB indicate that contaminants are moving around 

the PRB. In addition, 1,1-DCE concentrations have increased 

substantially since 2004 at well 12MW-23S, upgradient from 

the PRB near well 12MW-26S. 

Near the source area, at well 12MW-10S, concentrations 

of cDCE, VC, 1,1-DCA, and 1,1,1-TCA continued an irregular 

decline, while PCE and 1,1-DCE had marked fluctuations in 

concentration from 2005 to 2008. VOC concentrations at well 

12MW-03S, the next well downgradient from the source area, 

were substantially lower in 2008, compared with concentrations in 2000.

Groundwater VOC concentrations also changed in some 

wells in the forested area in the mid-part of the plume. An 

increase in VOC concentrations at wells 12MW-05S and 

12MW-29S during 2005–2006 may represent movement of a 

contaminant pulse through the forest. Declining concentrations 

in those wells from 2006 to 2008 may represent passage of 

the groundwater contaminant pulse. At well 12MW-12S, 67 ft 

downgradient from well 12MW-29S, VOC concentrations 

began rising in late 2006 and continued to rise through 2008, 

providing further evidence for movement of a contaminant 

pulse through the forest. The data also may reflect a lateral 

shift in the axis of the contamination plume, as might occur 

from the observed change in the piezometric surface. At the 

downgradient end of the plume, well 12MW-13S had continuous declines in TCE and 1,1-DCE concentrations from 2006 to 

August 2008. 

References

Abdul, A.S., Gibson, T.L., and Rai, D.N., 1990, Laboratory studies of the flow of some organic solvents and their aqueous solutions through bentonite and kaolin clays: Ground Water, v. 28, 

no. 4, p. 524–533.

Barcelona, M., Wehrmann, H.A., and Varljen, M.D., 1994, Reproducible well-purging procedures and VOC stabilization criteria 

for ground-water sampling: Ground Water, v. 

 CH2M Hill Constructors, Inc., 2002, Solid Waste Management

 Unit 12, interim corrective measures, Naval Weapons Station 

Charleston, Charleston, South Carolina: Consultant's report 

to Naval Facilities Engineering Command, October 2002, 48 p.

CH2M Hill Constructors, Inc., 2003, Performance completion 

report, interim corrective measures, permeable reactive barrier, 

Solid Waste Management Unit 12, Naval Weapons Station 

Charleston, Charleston, South Carolina: Consultant's report 

to Naval Facilities Engineering Command, April 2003, 39 p. 
30 Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009

Crane, C.E., Morgan, L.A., Evans, E., Dacyk, P., and Spies, J., 

2004, Performance monitoring of a zero-valent iron permeable 

reactive barrier installed with biopolymer slurry, remediation of 

chlorinated and recalcitrant compounds, in Proceedings of the 

4th International Conference on Remediation of Chlorinated 

and Recalcitrant Compounds, May 24–27, 2004, Monterey, 

CA: Columbus, OH, Battelle Press.

Environmental Science and Engineering, Inc., 1987, Confirmation 

study, characterization step, NWS Charleston, South Carolina: 

Consultant’s report, August 1987.

Harmon Engineering and Testing, 1984, Initial assessment study 

of Naval Weapons Station Charleston, South Carolina: NEESA 

12-040, Consultant’s report to the U.S. Navy, January 1984. 

Henderson, A.D., and Demond, A.H., 2007, Long-term performance of zero-valent iron permeable reactive barriers—A critical review: Environmental Engineering Science, v. 24, no. 4, 

p. 401–423.

Jambor, J.L., Raudsepp, M., and Mountjoy, K., 2005, Mineralogy 

of permeable reactive barriers for the attenuation of subsurface 

contaminants: The Canadian Mineralogist, v. 43, p. 2117–2140.

Johnson, R.L., Thoms, R.B., Johnson, R.O., Nurmi, J.T., and 

Tratnyek, P.G., 2008, Mineral precipitation upgradient from 

a zero-valent iron permeable reactive barrier: Ground Water 

Monitoring & Remediation, v. 28, no. 3, p. 56–64.

Kearney/Centaur, 1988, Interim RCRA facility assessment report, 

Naval Weapons Station, Charleston, South Carolina: Consultant’s report, May 1988.

Liang, L.Y., Sullivan, A.B., West, O.R., Moline, G.R., and 

Kamolpornwijit, W., 2003, Predicting the precipitation of 

mineral phases in permeable reactive barriers: Environmental 

Engineering Science, v. 20, p. 635.

Mallinckrodt Baker, Inc., 2008, Dioxane—Material safety data 

sheet for Dioxane, accessed January 11, 2010, at http://www.

jtbaker.com/msds/englishhtml/d7552.htm. 

Savoie, J.G., Kent, D.B., Smithe, R.L., LeBlanc, D.R., and 

Hubble, D.W., 2003, Changes in ground-water quality near two 

granular-iron permeable reactive barriers in a sand and gravel 

aquifer, Cape Cod, Massachusetts, 1997–2000: U.S. Geological 

Survey Water-Resources Investigations Report 03–4309, 84 p.

Sevee, J.E., White, C.A., and Maher, D.J., 2000, An analysis of 

low-flow groundwater sampling methodology: Groundwater 

Monitoring and Remediation, v. 20, no. 2, p. 87–93.

Shanklin, D.E., Sidle, W.C., and Ferguson, M.E., 1995, Micropurge low-flow sampling of uranium-contaminated groundwater at the Fernald Environmental Management Project: Groundwater Monitoring and Remediation, v. 15, no. 3, p. 168–176.

Sivavec, T., Krug, T., and Berry-Spark, K., 2001, Performance 

monitoring of a permeable reactive barrier at the Somersworth, 

NH Landfill Superfund Site: presented at the 2001 International 

Containment and Remediation Technology Conference and 

Exhibition, June 2001, Orlando, FL. 

South Carolina State Climatology Office, 2009, South Carolina Climate, data accessed December 15, 2009, at http://

www.dnr.sc.gov/climate/sco/ClimateData/cli_sc_climate.

php#precipitation.

Tetra Tech NUS, Inc., 2000a, RCRA facilities investigation report 

for SWMU12, former south side pentachlorophenol treatment 

area, Naval Weapons Station Charleston, Charleston, South 

Carolina: Consultant’s report to Naval Facilities Engineering 

Command, v. 2, appendix C-5 [variously paged].

Tetra Tech NUS, Inc., 2000b, RCRA facilities investigation report 

for SWMU12, former south side pentachlorophenol treatment 

area, Naval Weapons Station Charleston, Charleston, South 

Carolina: Consultant’s report to Naval Facilities Engineering 

Command, v. 1, 43 p.

Tetra Tech NUS, Inc., 2001, Addendum supplemental field 

investigation RCRA facilities investigation (RFI) report for 

SWMU12 former south side pentachlorophenol treatment 

area, Naval Weapons Station Charleston: Consultant’s report 

to Southern Division Naval Facilities Engineering Command, 

Charleston, South Carolina, 39 p. 

Vroblesky, D.A., Casey, C.C., and Lowery, M.A., 2007a, Influence of dissolved oxygen convection on well sampling: 

Groundwater Monitoring and Remediation, v. 27, no. 3, 

p. 49–58.

Vroblesky, D.A., Casey, C.C., Petkewich, M.D., Lowery, M.A., 

and Conlon, K.J., 2004, Interim progress report through October 2004 on ground-water contamination at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North 

Charleston, South Carolina: U.S. Geological Survey Open-File 

Report 2004–1429, 33 p.

Vroblesky, D.A., Casey, C.C., Petkewich, M.D., Lowery, M.A., 

Conlon, K.J., and Harrelson, L.G., 2007b, Investigation of 

ground-water contamination at Solid Waste Management Unit 

12, Naval Weapons Station Charleston, North Charleston, 

South Carolina: U.S. Geological Survey Scientific Investigations Report 2006–5311, 81 p.

Vroblesky, D.A., and Petkewich, M.D., 2009, Investigation 

of contaminated groundwater at Solid Waste Management 

Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, 2008: U.S. Geological Survey Scientific Investigations Report 2009–5166, 76 p.

Vroblesky, D.A., Petkewich, M.D., Lowery, M.A., Conlon, K.J., 

and Harrelson, L.G., 2008, Investigation of contaminated 

groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

2006–2007: U.S. Geological Survey Scientific Investigations 

Report 2008–5097, 70 p.

Wilkin, R.T., and Puls, R.W., 2003, Capstone report on the application, monitoring, and performance of permeable reactive 

barriers for groundwater remediation. Volume 1–Performance 

evaluations at two sites: Ada, OK, National Risk Management 

Research Laboratory, EPA/600/R03/045a.
Appendixes

	 1. Well-construction data, Solid Waste Management Unit 12, Naval Weapons

Station Charleston, North Charleston, South Carolina...........................................................32

	 2. Monthly water-level data from wells at Solid Waste Management Unit 12,

Naval Weapons Station Charleston, North Charleston, South Carolina,

April 1998 to August 2009.............................................................................................................33

	 3. Concentrations of organic compounds measured in groundwater and surface

water at Solid Waste Management Unit 12, Naval Weapons Station Charleston,

North Charleston, South Carolina, August 2000 to September 2009 ....................................38

	 4. Concentrations of inorganic constituents measured in groundwater at Solid

Waste Management Unit 12, Naval Weapons Station Charleston,

North Charleston, South Carolina, August 2000 to September 2009 ....................................55

	 5. Concentrations of selected volatile organic compounds detected

in groundwater from temporary wells at Solid Waste Management Unit 12,

Naval Weapons Station Charleston, North Charleston, South Carolina,

August to October 2009................................................................................................................70

	 6. Lithologic log and well-construction diagram of well 12PZ-07 at Solid Waste

Management Unit 12, Naval Weapons Station Charleston, North Charleston,

South Carolina, August 2009. ......................................................................................................71

	 7. Lithologic log and well-construction diagram of well 12PZ-08 at Solid Waste

Management Unit 12, Naval Weapons Station Charleston, North Charleston,

South Carolina, August 2009 .......................................................................................................72

	 8. Lithologic log and well-construction diagram of well 12PZ-09 at Solid Waste

Management Unit 12, Naval Weapons Station Charleston, North Charleston,

South Carolina, August 2009 .......................................................................................................73

	 9. Lithologic log and well-construction diagram of well 12PZ-10 at Solid Waste

Management Unit 12, Naval Weapons Station Charleston, North Charleston,

South Carolina, August 2009 .......................................................................................................74
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 1. Well-construction data, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina. 

[NAD 83, North American Datum of 1983; in., inches; ft, feet; rel., relative to; NAVD 88, North American Vertical Datum of 1988; bgs, below ground surface; btoc, 

below top of casing; ---, data not available; Horizontal coordinates for all wells (except those with *) were determined by geodimeter. Vertical datum was determined 

by differential leveling on 8/3/2004 and tied into a benchmark on 9/15/2004. Arbitrary horizontal coordinates output by geodimeter were transformed to South 

Carolina State Plane Coordinate System by using wells 12MW-04D, 12MW-09S, 12MW-08S, and 12MW-07S as control. State Plane coordinates for these four 

wells and for wells marked by * are from Appendix 1 of Vroblesky and others, 2004] 

State Plane Elevation of State Plane Top of riser Ground Stand- Depth of Depth of Depth of Depth of Elevation Northing Well Screen screen Installation Easting elevaton (ft elevation pipe screen screen screen screen of screen Well name coordinate diameter length bottom (ft date coordinate rel. NAVD (ft rel. height top bottom top (ft bottom top (ft rel. (NAD 83, (in.) (ft) rel. NAVD (NAD 83, feet) 88) NAVD 88) (ft) (ft bgs) (ft bgs) btoc) (ft btoc) NAVD 88) feet) 88) 

12MW-01D 2/25/1998 405035.719 2324888.00 2 10.74 8.26 2.48 10.00 29.00 39.00 31.48 41.48 -20.74 -30.74 

12MW-01S 2/25/1998 405033.531 2324882.50 2 10.73 8.46 2.27 10.00 4.00 14.00 6.27 16.27 4.46 -5.54 

12MW-02D 2/26/1998 405183.281 2325292.25 2 8.93 7.02 1.91 10.00 21.00 31.00 22.91 32.91 -13.98 -23.98 

12MW-02S 2/26/1998 405178.156 2325293.00 2 9.01 7.02 1.99 10.00 4.00 14.00 5.99 15.99 3.02 -6.98 

12MW-03D 2/25/1998 405113.344 2325320.75 2 9.07 6.67 2.40 10.00 20.00 30.00 22.40 32.40 -13.33 -23.33 

12MW-03S 2/25/1998 405109.594 2325317.00 2 9.05 6.72 2.33 10.00 4.00 14.00 6.33 16.33 2.72 -7.28 

12MW-04D 2/26/1998 405091.906 2325183.25 2 7.41 7.71 -0.30 10.00 22.00 32.00 21.70 31.70 -14.29 -24.29 

12MW-04S* 2/27/1998 405097.125 2325181.25 2 7.44 7.75 -0.31 10.00 4.00 14.00 3.69 13.69 3.75 -6.25 

12MW-05D 8/7/1999 405119.781 2325434.25 2 8.00 5.89 2.11 10.00 38.50 48.50 40.61 50.61 -32.61 -42.61 

12MW-05I 8/27/1999 405122.906 2325429.75 2 8.10 5.81 2.29 10.00 19.00 29.00 21.29 31.29 -13.19 -23.19 

12MW-05S 8/6/1999 405116.594 2325438.00 2 8.00 5.92 2.08 10.00 4.00 14.00 6.08 16.08 1.92 -8.08 

12MW-06D 8/4/1999 405143.969 2325670.00 2 4.92 3.05 1.87 10.00 32.00 42.00 33.87 43.87 -28.95 -38.95 

12MW-06S 8/4/1999 405147.406 2325674.00 2 5.38 3.17 2.21 10.00 4.00 14.00 6.21 16.21 -0.83 -10.83 

12MW-07D 8/6/1999 404949.625 2325517.75 2 5.37 3.44 1.93 10.00 35.00 45.00 36.93 46.93 -31.56 -41.56 

12MW-07S 8/5/1999 404946.938 2325523.25 2 5.43 3.45 1.98 10.00 4.00 14.00 5.98 15.98 -0.55 -10.55 

12MW-08D 8/3/1999 405471.406 2325630.50 2 7.41 5.28 2.13 10.00 29.00 39.00 31.13 41.13 -23.72 -33.72 

12MW-08S 8/3/1999 405475.406 2325633.25 2 7.16 5.25 1.91 10.00 4.00 14.00 5.91 15.91 1.25 -8.75 

12MW-09D 8/5/1999 405320.875 2325275.75 2 10.29 8.23 2.06 10.00 26.00 36.00 28.06 38.06 -17.77 -27.77 

12MW-09S 8/5/1999 405322.406 2325270.00 2 10.52 8.37 2.15 10.00 4.00 14.00 6.15 16.15 4.37 -5.63 

12MW-10S 6/22/2000 405094.469 2325274.00 2 9.58 7.24 2.34 11.00 4.50 15.50 6.84 17.84 2.74 -8.26 

12MW-11D 6/23/2000 405146.969 2325576.50 2 7.99 5.10 2.89 11.00 22.00 33.00 24.89 35.89 -16.90 -27.90 

12MW-11S 6/24/2000 405150.438 2325573.25 2 7.83 5.14 2.69 10.00 4.00 14.00 6.69 16.69 1.14 -8.86 

12MW-12D 8/22/2001 405133.906 2325574.75 2 8.27 5.16 3.11 10.00 20.00 30.00 23.11 33.11 -14.84 -24.84 

12MW-12S 8/23/2001 405133.500 2325571.00 2 8.52 5.16 3.36 5.00 8.00 13 11.36 16.36 -2.84 -7.84 

12MW-13S 8/23/2001 405124.125 2325665.00 2 6.35 2.97 3.38 5.00 8.00 13.00 11.38 16.38 -5.03 -10.03 

12MW-14S* 8/20/2001 405022.030 2325936.00 0.5 7.36 4.00 3.36 10.00 5.00 15.00 8.36 18.36 -1.00 -11.00 

12MW-15S* 8/20/2001 404999.770 2325854.88 0.5 7.62 4.40 3.22 10.00 5.00 15.00 8.22 18.22 -0.60 -10.60 

12MW-16S* 8/23/2001 404968.200 2325930.33 0.5 8.23 4.69 3.39 10.00 5.00 15.00 8.54 18.54 -0.31 -10.31 

12MW-17S 4/18/2002 405117.938 2325576.50 2 7.41 4.97 2.38 2.50 9 11.5 11.44 13.94 -4.03 -6.53 

12MW-18S 1/23/2003 405192.000 2325350.25 2 10.59 8.33 2.26 5.00 10 15 12.26 17.26 -1.67 -6.67 

12MW-19D 1/16/2003 405176.531 2325355.50 1 10.86 8.49 2.37 10.00 25 35 27.37 37.37 -16.51 -26.51 

12MW-19S 1/16/2003 405172.156 2325357.00 1 10.81 8.54 2.27 5.00 10 15 12.27 17.27 -1.46 -6.46 

12MW-20D 1/24/2003 405178.656 2325362.50 2 10.54 8.30 2.24 10.00 23 33 25.24 35.24 -14.70 -24.70 

12MW-20S 1/23/2003 405175.531 2325364.75 2 10.50 8.24 2.26 5.00 10 15 12.26 17.26 -1.76 -6.76 

12MW-21D 1/16/2003 405110.750 2325375.75 1 9.90 7.85 2.05 10.00 24 34 26.05 36.05 -16.15 -26.15 

12MW-21S 1/16/2003 405115.813 2325374.50 1 9.74 7.63 2.11 5.00 10 15 12.11 17.11 -2.37 -7.37 

12MW-22D 1/27/2003 405110.844 2325381.00 2 10.13 7.88 2.25 10.00 24 34 26.25 36.25 -16.12 -26.12 

12MW-22S 1/28/2003 405119.688 2325378.50 2 9.88 7.58 2.30 5.00 10 15 12.30 17.30 -2.42 -7.42 

12MW-23D 1/22/2003 405078.469 2325379.25 2 9.62 7.37 2.25 10.00 26 36 28.25 38.25 -18.63 -28.63 

12MW-23S 1/21/2003 405082.875 2325378.50 2 9.67 7.43 2.24 5.00 13 18 15.24 20.24 -5.57 -10.57 

12MW-24D 1/15/2003 405079.969 2325386.25 1 9.73 7.45 2.28 10.00 25 35 27.28 37.28 -17.55 -27.55 

12MW-24S 1/15/2003 405084.031 2325385.75 1 9.65 7.38 2.27 5.00 13 18 15.27 20.27 -5.62 -10.62 

12MW-25D 1/21/2003 405081.594 2325393.75 2 9.17 6.96 2.21 10.00 26 36 28.21 38.21 -19.04 -29.04 

12MW-25S 1/21/2003 405085.531 2325393.25 2 9.17 6.96 2.21 5.00 13 18 15.21 20.21 -6.04 -11.04 

12MW-26S 1/21/2003 405059.594 2325392.50 2 9.11 6.90 2.21 5.00 13 18 15.21 20.21 -6.10 -11.10 

12MW-27D 1/22/2003 405174.281 2325346.75 2 10.94 8.70 2.24 10.00 23 33 25.24 35.24 -14.30 -24.30 

12MW-27S 1/23/2003 405169.531 2325348.25 2 11.01 8.80 2.21 5.00 10 15 12.21 17.21 -1.20 -6.20 

12MW-28D 1/27/2003 405106.906 2325368.25 2 9.64 7.39 2.25 10.00 23 33 25.25 35.25 -15.61 -25.61 

12MW-28S 1/28/2003 405111.875 2325366.25 2 9.60 7.32 2.28 5.00 10 15 12.28 17.28 -2.68 -7.68 

12MW-29S 7/19/2004 405114.750 2325506.25 2 7.38 5.28 2.10 2.25 9.75 12 11.85 14.10 -4.47 -6.72 

12MW-30S 7/22/2004 405115.438 2325515.50 2 8.64 5.22 3.42 2.25 9.75 12 13.17 15.42 -4.53 -6.78 

12PZ-01* 8/15/2002 405261.850 2325470.42 2 8.81 6.16 2.65 10.00 4.5 14.5 7.15 17.15 1.66 -8.34 

12PZ-03D 3/10/2004 405130.594 2325712.75 1 4.72 --- --- 2.5 --- --- 11.8 14.3 -7.08 -9.58 

12PZ-03S 3/8/2004 405130.438 2325709.75 1 5.45 --- --- 2.5 --- --- 7.5 10 -2.05 -4.55 

12PZ-04 2/20/2004 405184.625 2325737.50 1 5.55 --- --- 2.5 --- --- 15 17.5 -9.45 -11.95 

12PZ-05 2/19/2004 405118.969 2325753.50 1 4.34 --- --- 2.5 --- --- 12.23 14.73 -7.89 -10.39 

12PZ-06 2/20/2004 405060.969 2325734.50 1 4.87 --- --- 2.5 --- --- 14.9 17.4 -10.03 -12.53 

12PZ-07 8/20/2009 405249.25 2325402.00 2 8.94 --- --- 5 11 16 

12PZ-08 8/20/2009 405034.031 2325520.25 2 7.02 --- --- 5 10 15 

12PZ-09 8/20/2009 405243.344 2325569.50 2 7.03 --- --- 5 13 18 

12PZ-10 8/20/2009 405356.719 2325548.00 2 7.15 --- --- 5 10 15 

32 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 2. Monthly water-level data from wells at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South 

Carolina, April 1998 to August 2009. 

[---, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988; *, measurement made by Tetra Tech NUS, Inc.] 

Date 12MW-01D 12MW-01S 12MW-02D 12MW-02S 12MW-03D 12MW-03S 12MW-04D 12MW-04S 12MW-05D 12MW-05I 12MW-05S 12MW-06D 12MW-06S 

4/18/1998* 4.33 4.33 4.26 4.26 4.25 4.25 4.39 4.33 --- --- --- --- ---

5/18/1998* 3.75 3.73 3.60 3.61 3.60 3.59 3.75 3.65 --- --- --- --- ---

6/25/1998* 2.32 2.31 2.16 2.16 2.15 2.14 2.20 2.21 --- --- --- --- ---

8/11/1999* 2.41 2.38 2.29 2.29 2.29 2.28 2.36 2.38 2.52 --- 2.22 2.41 1.63 

10/28/1999* 4.19 4.19 4.16 4.11 4.12 4.13 4.22 4.20 3.95 --- 4.06 3.69 3.56 

8/3/2000 3.99 4.02 3.98 --- 4.01 --- 4.00 4.04 3.75 --- 3.92 3.40 3.42 

9/7/2000 --- --- --- --- --- --- --- --- --- --- 5.31 3.92 3.99 

10/12/2000 3.23 3.21 3.07 3.06 3.07 3.05 3.12 3.13 3.20 3.03 2.98 3.04 2.56 

11/13/2000 2.28 2.27 2.08 2.07 2.07 2.05 2.14 2.14 2.30 2.03 1.98 2.22 1.54 

1/12/2001 3.30 3.30 3.14 3.14 3.12 3.15 3.17 3.24 3.00 3.08 3.03 2.76 2.78 

2/8/2001 3.15 3.15 2.99 3.00 2.99 2.99 3.07 3.10 2.86 2.94 2.89 2.71 2.64 

3/14/2001 4.17 4.19 4.05 4.05 4.04 4.04 4.12 4.21 3.60 3.96 3.95 3.24 3.33 

4/13/2001 3.61 3.59 3.43 3.43 3.43 3.43 3.60 3.51 3.45 3.39 3.35 3.18 2.92 

5/14/2001 2.28 2.26 2.03 2.01 2.04 2.01 2.13 2.16 2.29 2.00 1.95 2.14 1.26 

6/19/2001 2.50 2.48 2.43 2.44 2.43 2.44 2.41 2.43 2.19 2.55 2.25 2.30 1.70 

7/19/2001 2.80 2.80 2.72 2.70 2.71 2.78 2.76 2.77 2.87 2.70 2.63 2.73 2.38 

8/30/2001 2.25 2.24 2.15 2.14 2.14 2.13 2.21 2.22 2.43 2.11 2.06 2.39 1.57 

9/27/2001 2.29 2.30 2.23 2.23 2.21 2.22 2.25 2.27 2.46 2.19 2.16 2.42 2.23 

10/30/2001 1.29 1.27 1.21 1.20 1.20 1.20 1.28 1.25 1.69 1.20 1.17 1.76 1.30 

11/27/2001 1.10 1.09 1.04 1.03 1.03 1.02 1.05 1.07 1.46 1.02 1.00 1.57 1.21 

12/26/2001 1.38 1.36 1.32 1.31 1.30 1.30 1.33 1.34 1.67 1.30 1.27 1.69 1.48 

1/22/2002 1.93 1.90 1.81 1.80 1.80 1.80 1.80 1.89 1.97 1.79 1.73 1.88 1.93 

2/26/2002 2.26 2.25 2.08 2.07 2.09 2.07 2.22 2.21 2.19 2.04 1.99 2.08 2.08 

5/3/2002 1.78 1.77 1.61 1.63 1.61 1.61 1.69 1.67 1.94 1.58 1.51 1.92 1.36 

6/6/2002 0.96 0.95 0.83 0.83 0.83 0.83 0.85 0.86 1.32 0.81 0.76 1.41 0.61 

7/12/2002 2.15 2.15 2.01 2.03 2.03 2.00 2.08 2.08 1.85 2.28 1.88 2.15 1.83 

8/8/2002 1.53 1.51 1.41 1.40 1.41 1.42 1.45 1.29 1.81 1.39 1.32 1.85 1.12 

8/26/2002 1.41 1.40 1.27 1.26 1.27 1.28 1.33 1.34 1.54 1.24 1.21 1.68 1.53 

8/28/2002 1.86 1.88 1.78 1.69 1.75 1.77 1.84 1.89 1.90 1.71 1.68 1.92 2.05 

9/9/2002 2.94 2.93 2.99 2.99 2.97 2.99 3.03 3.06 3.02 2.95 2.87 2.87 2.76 

10/3/2002 4.23 4.24 4.22 4.23 4.28 4.20 4.27 4.31 3.95 4.15 4.16 3.54 3.59 

11/21/2002 5.19 5.17 5.29 5.36 5.32 5.43 --- --- 4.71 5.14 5.06 4.11 4.08 

12/18/2002 4.72 4.72 4.68 4.69 4.68 4.70 4.77 4.74 4.25 4.56 4.50 3.81 3.72 

2/3/2003 4.07 4.03 3.94 3.95 3.92 3.94 3.97 3.93 3.79 3.84 3.78 3.44 3.27 

2/13/2003 4.00 3.98 3.92 3.94 3.95 3.96 3.92 3.95 3.72 3.85 3.79 3.36 3.27 

2/20/2003 4.11 4.10 4.04 4.05 4.05 4.06 4.08 4.11 3.79 3.96 3.89 3.42 3.34 

2/26/2003 4.10 3.99 4.10 4.10 4.19 4.08 4.12 4.15 3.83 4.01 3.94 3.48 3.39 

3/25/2003 5.08 5.08 5.04 5.03 5.02 5.04 5.07 5.11 4.58 4.90 4.83 4.07 3.91 

4/23/2003 3.96 3.94 3.86 3.84 3.87 3.87 3.87 3.89 3.84 3.77 3.67 3.52 3.17 

5/27/2003 4.61 4.61 4.61 4.61 4.60 4.64 4.61 4.68 4.14 4.49 4.44 3.69 3.67 

6/30/2003 3.56 3.55 3.45 3.45 3.45 3.47 3.54 3.50 3.49 3.38 3.28 3.26 2.81 

8/4/2003 4.66 4.71 4.61 4.64 4.56 4.60 4.52 4.62 4.17 4.43 4.39 3.80 3.80 

8/29/2003 3.06 3.05 2.84 2.89 2.92 2.91 2.95 2.95 3.06 2.82 2.74 2.91 2.22 

9/30/2003 2.76 2.73 2.63 2.63 2.65 2.65 2.70 2.69 2.90 2.58 2.50 2.86 2.45 

11/3/2003 2.86 2.86 2.76 2.76 2.78 2.80 2.82 2.85 2.84 2.68 2.61 2.71 2.53 

12/8/2003 2.77 2.77 2.63 2.65 2.64 2.64 2.62 2.76 2.69 2.54 2.49 2.55 2.41 

1/15/2004 2.79 2.78 2.66 2.66 2.67 2.69 2.73 2.77 2.70 2.58 2.50 2.56 2.39 

2/13/2004 3.80 3.83 3.65 3.65 3.65 3.68 3.48 3.96 3.22 3.47 3.41 2.94 3.03 

3/15/2004 3.37 3.37 3.29 3.28 3.30 3.31 3.34 3.57 3.23 3.20 3.13 2.99 2.76 

4/21/2004 2.87 2.86 2.77 2.77 2.78 2.80 2.84 3.04 2.82 2.70 2.63 2.62 2.33 

5/20/2004 2.47 2.45 2.38 2.39 2.38 2.39 2.43 2.45 2.58 2.32 2.25 2.46 1.76 

6/21/2004 2.06 2.05 1.98 1.99 2.01 2.03 2.02 2.06 2.16 1.94 1.87 2.04 1.53 

7/26/2004 2.69 2.66 2.67 --- 2.69 2.73 2.70 2.75 2.57 2.75 2.53 2.59 2.47 

9/15/2004 4.22 4.21 4.10 4.13 4.13 4.16 4.27 4.24 3.83 4.04 4.00 3.51 3.56 

10/21/2004 3.16 3.13 2.91 --- 2.94 2.96 3.01 3.04 2.94 2.85 2.77 2.78 2.61 

11/29/2004 2.41 2.37 2.09 --- 2.12 2.11 2.21 2.19 2.15 1.98 1.93 2.07 1.72 

12/27/2004 2.64 2.63 2.28 --- 2.28 2.32 2.33 2.40 2.14 2.10 2.04 2.01 2.01 

1/25/2005 2.77 2.76 2.53 2.52 2.55 2.57 2.67 2.66 2.44 2.43 2.37 2.27 2.28 

2/17/2005 2.98 2.97 2.76 2.74 2.79 2.8 2.87 2.91 2.63 2.67 2.6 2.45 2.53 

3/24/2005 4.06 4.07 3.84 3.82 3.84 3.88 3.92 4.18 3.29 3.71 3.67 2.92 3.16 

4/25/2005 3.00 2.98 2.75 2.73 2.77 2.78 2.83 2.99 2.79 2.70 2.58 2.64 2.25 

5/31/2005 2.29 2.28 2.00 2.00 2.05 2.07 2.08 2.14 2.02 1.89 1.79 1.98 1.71 

6/17/2005 2.19 2.16 1.94 1.92 1.98 2.00 2.07 2.06 2.14 1.90 1.79 2.12 1.55 

7/21/2005 3.09 3.08 2.86 2.85 2.89 2.91 2.96 3.20 2.73 2.96 2.70 2.73 2.61 

8/16/2005 4.24 4.23 4.11 4.14 4.19 4.11 4.21 4.41 3.81 4.06 4.01 3.47 3.65 

9/29/2005 2.42 2.38 2.12 2.11 2.16 2.15 2.21 2.40 2.33 2.05 2.00 2.29 1.53 

10/17/2005 3.38 3.35 3.16 3.14 3.19 3.19 3.31 3.38 3.20 3.10 3.01 3.02 2.93 

12/1/2005 3.17 3.15 2.94 2.93 2.96 2.99 3.04 3.34 2.84 2.86 2.79 2.70 2.74 

12/19/2005 4.35 4.37 4.13 4.14 4.14 4.18 4.18 4.48 3.50 4.02 3.95 3.17 3.35 

1/26/2006 3.83 3.82 3.66 3.65 3.70 3.73 3.74 4.04 3.40 3.61 3.55 3.11 3.27 

3/2/2006 4.29 4.29 4.20 4.20 4.22 4.25 4.26 4.39 3.79 4.12 4.05 3.42 3.57 

3/30/2006 2.97 2.94 2.68 2.67 2.69 2.71 2.75 3.08 2.71 2.62 2.51 2.58 2.48 

5/1/2006 2.14 2.11 1.87 1.85 1.90 1.90 1.97 1.99 2.06 1.81 1.70 2.01 1.49 

5/31/2006 1.66 1.64 1.38 1.39 1.45 1.45 1.51 1.53 1.68 1.35 1.27 1.64 0.89 

6/29/2006 2.43 2.41 2.16 2.18 2.19 2.26 2.27 2.27 2.18 2.11 2.02 2.12 2.13 

10/2/2006 2.32 2.29 2.08 2.09 2.12 2.14 2.20 2.21 2.31 2.07 1.99 1.43 2.78 

5/21/2007 0.69 0.64 0.47 0.46 0.52 0.52 0.53 0.77 0.95 0.44 0.37 1.02 -0.13 

7/17/2007 0.84 0.85 --- 0.69 0.71 0.72 0.74 0.76 1.05 0.65 0.59 1.13 0.22 

11/26/2007 1.94 1.91 1.63 1.64 1.69 1.69 1.75 1.76 1.85 1.61 1.54 1.85 1.37 

5/5/2008 1.91 1.87 1.63 1.60 1.70 1.68 1.71 2.05 1.91 1.63 1.49 2.66 1.34 

8/28/2008 1.75 1.74 1.55 1.56 1.59 1.62 1.62 1.61 1.76 1.52 1.43 2.74 1.37 

2/10/2009 2.52 2.52 2.23 2.21 2.24 2.26 2.30 2.32 2.20 2.13 2.00 2.06 1.97 

2/11/2009 --- --- --- --- --- --- --- --- --- --- --- --- ---

8/3/2009 3.05 3.04 2.61 2.63 2.66 2.70 2.73 2.74 2.55 2.51 2.47 2.46 2.33 

8/28/2009 2.45 2.43 2.00 2.04 2.08 2.10 2.14 2.18 2.20 2.00 1.89 2.00 1.66 

33 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 2. Monthly water-level data from wells at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South 

Carolina, April 1998 to August 2009 (continued). 

[---. Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988; *, measurement made by Tetra Tech NUS, Inc.] 

Date 12MW-07D 12MW-07S 12MW-08D 12MW-08S 12MW-09D 12MW-09S 12MW-10S 12MW-11D 12MW-11S 12MW-12D 12MW-12S 12MW-13S 12MW-14S 

4/18/1998* --- --- --- --- --- --- --- --- --- --- --- --- ---

5/18/1998* --- --- --- --- --- --- --- --- --- --- --- --- ---

6/25/1998* --- --- --- --- --- --- --- --- --- --- --- --- ---

8/11/1999* 2.66 2.13 2.43 2.58 2.30 2.26 --- --- --- --- --- --- ---

10/28/1999* 3.84 4.07 3.70 3.74 4.04 4.09 --- --- --- --- --- --- ---

8/3/2000 3.56 3.88 --- --- 3.86 3.92 --- --- --- --- --- --- ---

9/7/2000 --- 5.09 --- --- --- 5.44 --- --- --- --- --- --- ---

10/12/2000 3.23 2.94 3.06 2.84 3.07 3.02 3.13 3.05 2.74 --- --- --- ---

11/13/2000 2.37 1.90 2.28 2.11 2.12 2.02 2.10 2.10 1.76 --- --- --- ---

1/12/2001 2.89 2.93 2.83 3.59 3.03 3.12 3.40 2.98 2.78 --- --- --- ---

2/8/2001 2.86 2.83 2.77 3.40 2.91 2.94 3.16 --- --- --- --- --- ---

3/14/2001 3.37 3.81 3.31 3.96 3.79 4.07 4.08 3.74 3.70 --- --- --- ---

4/13/2001 3.36 3.29 3.28 3.37 3.39 3.47 3.52 3.36 3.09 --- --- --- ---

5/14/2001 2.36 1.86 2.17 2.15 2.04 1.98 2.12 2.12 1.69 --- --- --- ---

6/19/2001 2.54 2.18 2.30 2.41 2.30 2.29 2.52 2.30 1.99 --- --- --- ---

7/19/2001 2.95 2.63 2.72 3.09 2.70 2.64 2.79 2.74 2.41 --- --- --- ---

8/30/2001 2.61 2.03 2.42 2.43 2.19 2.10 2.22 2.21 1.83 --- --- 1.89 ---

9/27/2001 2.71 2.20 2.36 2.81 2.33 2.21 2.30 2.35 1.99 2.47 2.00 2.11 ---

10/30/2001 1.95 1.17 1.75 1.57 1.36 1.20 1.27 1.41 1.02 1.35 1.01 1.10 ---

11/27/2001 1.72 1.01 1.56 1.60 1.18 1.05 1.08 1.21 0.85 1.19 0.86 0.95 1.75 

12/26/2001 1.87 1.29 1.68 1.48 1.41 1.33 1.36 1.44 1.11 1.46 1.11 1.20 2.00 

1/22/2002 2.07 1.71 1.88 2.21 1.81 1.78 1.91 1.82 1.53 1.81 1.56 1.61 2.07 

2/26/2002 2.20 1.95 2.06 2.51 2.04 2.05 2.17 2.04 1.78 2.06 1.78 1.85 2.23 

5/3/2002 2.13 1.51 1.91 1.82 1.65 1.54 1.68 1.68 1.27 1.70 1.29 1.36 ---

6/6/2002 1.63 0.74 1.38 1.00 0.98 0.81 0.92 1.02 0.58 1.01 0.58 0.65 ---

7/12/2002 2.35 1.85 2.16 2.96 2.00 1.97 2.13 2.01 1.70 2.01 1.69 1.74 2.22 

8/8/2002 2.07 1.33 1.84 2.08 1.50 1.34 1.49 1.55 1.14 1.55 1.13 1.20 1.98 

8/26/2002 1.85 1.19 1.62 2.40 1.34 1.29 1.38 1.37 1.07 1.32 1.04 1.10 1.89 

8/28/2002 2.09 1.60 1.87 2.99 1.79 1.82 1.85 1.81 1.55 1.79 1.49 1.56 2.11 

9/9/2002 3.06 2.88 2.90 --- 2.95 2.95 3.04 2.93 2.73 2.95 2.75 2.77 2.97 

10/3/2002 3.78 4.10 3.66 3.88 4.11 4.21 4.27 4.06 4.00 4.06 4.01 3.94 3.38 

11/21/2002 4.31 5.02 4.26 4.16 4.88 5.14 5.33 4.84 4.83 4.85 4.88 5.72 3.91 

12/18/2002 3.97 4.45 3.94 4.07 4.42 4.64 4.76 4.36 4.32 4.37 4.38 4.22 3.65 

2/3/2003 3.57 3.75 3.54 3.85 3.83 3.93 4.01 3.77 3.66 3.79 3.69 3.61 3.27 

2/13/2003 3.51 3.77 3.46 3.75 3.80 3.89 4.02 3.74 3.68 3.70 3.70 3.61 ---

2/20/2003 3.55 3.86 3.51 3.71 3.88 4.00 4.17 3.83 3.79 3.71 3.83 3.68 2.62 

2/26/2003 3.57 3.94 3.58 3.77 3.93 4.32 4.17 3.88 3.81 3.88 3.84 3.46 3.30 

3/25/2003 4.23 4.80 4.15 4.07 4.74 4.99 5.10 4.70 4.64 4.68 4.69 4.52 3.85 

4/23/2003 3.71 3.67 3.61 3.39 3.75 3.80 3.89 3.73 3.50 3.72 3.55 3.46 3.41 

5/27/2003 3.86 4.38 3.76 4.09 4.32 4.59 3.66 4.77 4.29 4.27 4.35 4.18 3.55 

6/30/2003 3.44 3.26 3.34 3.37 3.38 3.39 3.51 3.37 3.10 3.37 3.12 3.09 2.45 

8/4/2003 3.98 4.30 3.92 4.25 4.34 4.62 4.67 4.27 4.28 4.25 4.29 4.15 3.60 

8/29/2003 3.10 2.76 2.97 2.85 2.89 2.85 2.95 2.87 2.57 2.88 2.60 2.58 2.88 

9/30/2003 3.07 2.54 2.83 2.60 2.65 2.56 2.68 2.68 2.35 2.67 2.37 2.41 2.96 

11/3/2003 2.92 2.61 2.69 3.27 2.71 2.72 2.84 2.70 2.45 2.71 2.46 2.49 1.63 

12/8/2003 2.69 2.46 2.53 3.29 2.60 2.61 2.72 2.57 2.32 2.57 2.32 2.33 2.67 

1/15/2004 2.71 2.50 2.56 3.33 2.62 2.63 2.73 2.60 2.33 2.60 2.36 2.36 2.61 

2/13/2004 3.05 3.36 2.98 4.01 3.37 3.58 3.81 3.31 3.23 3.30 3.25 3.19 2.85 

3/15/2004 3.14 3.13 3.09 3.76 3.21 3.25 3.36 3.17 2.98 3.17 2.99 3.07 2.86 

4/21/2004 2.78 2.63 2.68 3.48 2.68 2.74 2.87 2.70 2.44 2.70 2.45 --- 2.58 

5/20/2004 2.60 2.24 2.54 3.18 2.41 2.37 2.42 2.39 2.03 2.39 2.06 2.08 2.39 

6/21/2004 2.22 1.87 2.07 2.62 2.02 1.99 2.06 2.00 1.73 1.99 1.71 1.73 1.94 

7/26/2004 2.71 2.53 2.67 3.81 2.65 2.67 2.78 2.62 2.41 2.62 2.39 2.42 2.59 

9/15/2004 3.73 4.01 3.43 3.38 3.83 4.05 4.18 3.88 3.86 3.93 3.89 3.81 3.43 

10/21/2004 3.07 2.84 2.60 1.91 2.70 2.79 3.03 2.80 2.65 2.80 2.67 2.67 2.88 

11/29/2004 2.33 1.94 1.86 1.33 1.91 1.98 2.20 1.99 1.79 1.97 1.78 1.79 2.19 

12/27/2004 2.26 2.05 1.74 1.98 2.01 2.17 2.48 2.04 1.91 2.04 1.91 1.90 2.17 

1/25/2005 2.54 2.40 1.97 1.46 2.26 2.42 2.65 2.34 2.22 2.33 2.21 2.21 2.41 

2/17/2005 2.71 2.66 2.2 1.86 2.49 2.63 2.91 2.57 2.44 2.55 2.47 2.48 2.57 

3/24/2005 3.17 3.64 2.71 3.51 3.39 3.74 4.00 3.42 3.57 3.43 3.56 3.45 2.91 

4/25/2005 2.91 2.67 2.43 1.34 2.56 2.62 2.82 2.64 2.47 2.64 2.47 2.46 2.69 

5/31/2005 2.27 1.82 1.70 1.25 1.78 1.88 2.18 1.85 1.65 1.84 1.62 1.64 2.08 

6/17/2005 2.45 1.88 1.79 0.51 1.76 1.80 2.05 1.91 1.66 1.89 1.66 1.71 2.32 

7/21/2005 3.04 2.84 2.49 1.56 2.63 2.71 2.96 2.75 2.62 2.74 2.62 2.63 2.87 

8/16/2005 3.74 4.07 3.46 3.06 3.78 4.02 4.20 3.88 3.94 3.87 3.93 3.87 3.45 

9/29/2005 2.59 2.02 2.02 0.41 1.99 2.02 2.19 2.09 1.85 2.09 1.83 1.85 2.43 

10/17/2005 3.32 3.10 2.82 2.03 2.96 3.02 3.23 3.07 2.92 3.06 2.91 2.92 3.11 

12/1/2005 2.96 2.85 2.42 2.10 2.66 2.80 3.08 2.77 2.70 2.76 2.67 2.70 2.83 

12/19/2005 3.38 3.88 2.99 3.69 3.64 4.00 4.31 3.68 3.84 3.67 3.84 3.70 3.05 

1/26/2006 3.34 3.59 2.95 3.17 3.36 3.56 3.86 3.44 3.52 3.43 3.52 3.46 3.13 

3/2/2006 3.61 4.07 3.31 3.43 3.87 4.11 4.38 3.90 3.97 3.89 3.98 3.88 3.34 

3/30/2006 2.83 2.58 2.36 1.28 2.49 2.55 2.81 2.57 2.43 2.56 2.43 2.44 2.66 

5/1/2006 2.29 1.76 1.75 0.36 1.74 1.74 1.95 1.81 1.58 1.81 1.54 1.60 2.14 

5/31/2006 1.97 1.29 1.39 -0.26 1.31 1.30 1.50 1.41 1.14 1.40 1.11 1.11 1.81 

6/29/2006 2.44 2.08 1.79 1.03 1.93 2.06 2.34 2.04 1.9 2.04 1.85 1.91 2.27 

10/2/2006 2.65 2.11 2.01 0.58 1.97 1.97 2.17 2.11 1.93 2.11 1.92 1.98 2.55 

5/21/2007 1.34 0.43 0.79 -1.16 0.51 0.38 0.55 0.61 0.29 0.60 0.21 0.22 1.11 

7/17/2007 1.46 0.67 0.84 -0.88 0.67 0.63 0.91 0.80 0.57 0.77 0.47 0.51 1.39 

11/26/2007 2.15 1.58 1.61 -0.10 1.54 1.85 1.92 1.63 1.46 1.64 1.43 1.45 2.08 

5/5/2008 2.23 1.63 1.60 -0.21 1.52 1.47 2.28 1.66 1.39 1.66 1.32 1.42 2.11 

8/28/2008 2.17 1.55 1.43 -0.15 1.42 1.45 2.61 1.56 1.40 1.55 1.28 1.37 2.10 

2/10/2009 2.36 1.91 1.76 0.48 1.96 2.09 3.32 2.03 1.94 2.05 1.87 1.92 1.74 

2/11/2009 --- --- --- --- --- --- --- --- --- --- --- --- ---

8/3/2009 2.81 2.52 2.12 1.55 2.30 2.48 --- 2.40 2.37 2.41 2.34 2.33 2.73 

8/28/2009 2.57 1.95 1.89 1.14 1.83 1.91 --- 1.94 1.78 1.94 1.77 1.77 2.49 

34 
 

 

 

 

 

 

 

 

 

Appendix 2. Monthly water-level data from wells at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South 

Carolina, April 1998 to August 2009 (continued). 

[---. Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988; *, measurement made by Tetra Tech NUS, Inc.] 

Date 12MW-15S 12MW-16S 12MW-17S 12MW-18S 12MW-19D 12MW-19S 12MW-20D 12MW-20S 12MW-21D 12MW-21S 12MW-22D 12MW-22S 12MW-23D 

4/18/1998* --- --- --- --- --- --- --- --- --- --- --- --- ---

5/18/1998* --- --- --- --- --- --- --- --- --- --- --- --- ---

6/25/1998* --- --- --- --- --- --- --- --- --- --- --- --- ---

8/11/1999* --- --- --- --- --- --- --- --- --- --- --- --- ---

10/28/1999* --- --- --- --- --- --- --- --- --- --- --- --- ---

8/3/2000 --- --- --- --- --- --- --- --- --- --- --- --- ---

9/7/2000 --- --- --- --- --- --- --- --- --- --- --- --- ---

10/12/2000 --- --- --- --- --- --- --- --- --- --- --- --- ---

11/13/2000 --- --- --- --- --- --- --- --- --- --- --- --- ---

1/12/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

2/8/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

3/14/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

4/13/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

5/14/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

6/19/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

7/19/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

8/30/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

9/27/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

10/30/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

11/27/2001 0.64 0.81 --- --- --- --- --- --- --- --- --- --- ---

12/26/2001 1.28 1.26 --- --- --- --- --- --- --- --- --- --- ---

1/22/2002 1.70 1.35 --- --- --- --- --- --- --- --- --- --- ---

2/26/2002 1.86 1.65 --- --- --- --- --- --- --- --- --- --- ---

5/3/2002 --- --- --- --- --- --- --- --- --- --- --- --- ---

6/6/2002 --- --- --- --- --- --- --- --- --- --- --- --- ---

7/12/2002 0.07 1.60 --- --- --- --- --- --- --- --- --- --- ---

8/8/2002 0.16 1.19 --- --- --- --- --- --- --- --- --- --- ---

8/26/2002 1.20 0.99 1.10 --- --- --- --- --- --- --- --- --- ---

8/28/2002 2.17 1.25 1.56 --- --- --- --- --- --- --- --- --- ---

9/9/2002 2.26 2.66 --- --- --- --- --- --- --- --- --- --- ---

10/3/2002 2.61 3.26 4.00 --- --- --- --- --- --- --- --- --- ---

11/21/2002 3.28 3.91 4.85 --- --- --- --- --- --- --- --- --- ---

12/18/2002 3.09 3.62 4.34 --- --- --- --- --- --- --- --- --- ---

2/3/2003 2.66 3.08 3.66 --- --- --- --- --- --- --- --- --- ---

2/13/2003 --- --- 3.66 3.80 3.88 3.91 3.79 3.85 3.89 3.86 3.84 3.83 3.91 

2/20/2003 2.52 4.14 3.80 --- --- --- --- --- --- --- --- --- ---

2/26/2003 2.84 3.21 3.82 3.96 4.04 4.02 4.04 4.01 4.02 4.03 4.03 3.99 3.94 

3/25/2003 3.22 3.86 4.67 4.96 4.93 4.95 4.92 4.90 4.92 4.97 4.93 4.91 4.90 

4/23/2003 2.18 3.08 3.49 3.80 3.78 3.79 3.80 3.77 3.79 3.81 3.79 3.74 3.80 

5/27/2003 3.37 3.60 4.31 4.56 4.55 4.56 4.54 4.53 4.50 4.56 4.51 4.49 4.48 

6/30/2003 1.65 2.82 3.11 3.39 3.39 3.41 3.39 3.38 3.39 3.43 3.38 3.34 3.40 

8/4/2003 3.14 3.60 4.28 4.56 4.52 4.54 4.51 4.53 4.46 4.48 4.45 4.46 4.42 

8/29/2003 1.05 2.47 2.59 2.84 2.87 2.84 2.85 2.82 2.82 2.88 2.85 2.79 2.88 

9/30/2003 1.34 2.51 2.36 2.59 2.57 2.57 2.58 2.54 2.59 2.61 2.58 2.53 2.64 

11/3/2003 1.86 2.30 2.45 2.69 2.70 2.70 2.71 2.67 2.70 2.72 2.71 2.65 2.73 

12/8/2003 2.11 2.15 2.31 2.56 2.58 2.57 2.58 2.56 2.58 2.56 2.56 2.51 2.59 

1/15/2004 2.12 2.21 2.36 2.60 2.62 2.61 2.60 2.58 2.60 2.60 2.59 2.53 2.62 

2/13/2004 3.36 2.60 3.25 3.49 3.52 3.51 3.50 3.50 3.48 3.44 3.48 3.44 3.48 

3/15/2004 2.11 2.55 2.99 3.23 3.73 3.26 3.24 3.23 3.24 3.27 3.21 3.19 3.24 

4/21/2004 1.70 2.18 2.45 2.71 2.73 2.73 2.71 2.69 2.72 2.75 2.70 2.66 2.73 

5/20/2004 1.03 2.01 2.06 2.32 2.33 2.34 2.35 2.32 2.34 2.38 2.33 2.28 2.36 

6/21/2004 0.80 1.58 1.73 1.94 1.96 1.96 1.95 1.93 1.95 1.96 1.94 1.90 1.98 

7/26/2004 2.14 3.31 2.41 2.63 2.64 2.64 2.65 2.63 2.62 2.63 2.61 2.58 2.64 

9/15/2004 2.79 3.41 3.87 4.07 4.10 4.09 4.09 4.03 4.10 3.98 4.05 4.04 4.07 

10/21/2004 2.12 2.66 2.64 2.84 2.87 2.87 2.87 2.84 2.88 2.89 2.88 2.82 2.85 

11/29/2004 1.49 1.83 1.78 2.01 2.05 2.02 2.03 2.00 2.05 2.06 2.05 1.97 2.08 

12/27/2004 2.46 1.78 1.86 2.16 2.19 2.16 2.17 2.13 2.18 1.93 2.16 2.09 2.21 

1/25/2005 2.22 2.11 --- 2.44 2.50 2.49 2.46 2.43 2.49 2.34 2.48 2.44 2.46 

2/17/2005 2.4 2.33 2.47 2.67 2.71 2.7 2.69 2.66 2.72 2.74 2.7 2.65 2.72 

3/24/2005 3.39 2.85 3.56 3.77 3.79 3.79 3.75 3.74 3.86 3.60 3.72 3.70 3.71 

4/25/2005 1.64 2.40 2.47 2.67 2.74 2.73 2.70 2.68 2.74 2.78 2.73 2.65 2.75 

5/31/2005 1.44 1.69 1.64 1.89 2.14 1.91 1.91 1.87 1.95 1.89 1.91 1.82 1.97 

6/17/2005 1.08 2.00 1.64 1.86 1.92 1.90 1.90 1.86 1.95 1.97 1.93 1.85 1.98 

7/21/2005 1.87 2.71 2.62 2.80 2.86 2.85 2.83 2.79 2.86 2.93 3.04 2.60 2.88 

8/16/2005 2.93 3.47 3.93 4.08 4.13 4.11 4.09 4.08 4.08 4.13 4.09 4.06 4.09 

9/29/2005 0.50 2.04 1.84 2.13 2.10 2.08 2.09 2.05 2.20 2.12 2.10 2.02 2.16 

10/17/2005 2.10 2.89 2.91 3.10 3.16 3.14 3.12 3.08 3.20 3.17 3.14 3.07 3.16 

12/1/2005 2.65 2.65 2.68 2.86 2.91 2.89 2.89 2.85 2.92 2.91 2.91 2.84 2.92 

12/19/2005 3.55 3.61 3.81 4.06 4.10 4.10 4.06 4.04 4.07 4.09 4.04 4.01 4.01 

1/26/2006 3.15 3.14 3.48 3.63 3.67 3.66 3.64 3.62 3.65 3.69 3.65 3.62 3.64 

3/2/2006 3.18 3.37 3.97 4.18 4.22 4.23 4.18 4.16 4.18 4.25 4.17 4.15 4.14 

3/30/2006 1.95 2.38 2.40 2.61 2.65 2.64 2.63 2.59 2.67 2.68 2.65 2.59 2.67 

5/1/2006 1.07 1.79 1.54 1.78 1.84 1.80 1.82 1.77 1.80 1.80 1.82 1.75 1.88 

5/31/2006 0.31 1.39 1.11 1.31 1.37 1.35 1.36 1.30 1.38 1.39 1.38 1.31 1.44 

6/29/2006 1.05 2.08 1.88 2.09 2.14 2.1 2.12 2.08 2.15 2.13 2.14 2.06 2.17 

10/2/2006 1.40 2.38 1.92 2.05 2.10 2.09 2.09 2.05 2.13 2.12 2.12 2.06 2.16 

5/21/2007 -0.86 0.76 0.26 0.42 0.47 0.44 0.46 0.41 0.50 0.49 0.48 0.40 0.55 

7/17/2007 -0.68 1.01 0.54 0.63 0.68 0.65 0.66 0.62 0.72 0.70 0.69 0.62 0.75 

11/26/2007 1.17 1.88 1.46 1.59 1.63 1.59 1.63 1.58 1.65 1.63 1.63 1.58 1.69 

5/5/2008 1.14 1.88 1.37 1.59 1.64 1.61 1.61 1.55 1.65 1.66 1.65 1.56 1.70 

8/28/2008 0.67 1.79 1.40 1.49 1.55 1.52 1.54 1.48 1.56 1.56 1.57 1.49 1.61 

2/10/2009 1.43 3.12 1.90 2.14 --- --- 2.17 2.13 --- --- 2.19 2.11 2.22 

2/11/2009 --- --- --- 2.09 2.14 2.10 2.12 2.07 2.15 2.13 2.13 2.06 2.16 

8/3/2009 2.79 2.58 2.36 2.54 2.54 2.52 2.55 2.51 2.56 2.51 2.54 2.49 2.57 

8/28/2009 1.24 2.26 1.75 1.97 2.01 1.99 2.00 1.96 2.03 2.01 2.03 1.95 2.08 

35 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 2. Monthly water-level data from wells at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South 

Carolina, April 1998 to August 2009 (continued). 

[---. Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988; *, measurement made by Tetra Tech NUS, Inc.] 

Date 12MW-23S 12MW-24D 12MW-24S 12MW-25D 12MW-25S 12MW-26S 12MW-27D 12MW-27S 12MW-28D 12MW-28S 12MW-29S 12MW-30S 12PZ-01 

4/18/1998* --- --- --- --- --- --- --- --- --- --- --- --- ---

5/18/1998* --- --- --- --- --- --- --- --- --- --- --- --- ---

6/25/1998* --- --- --- --- --- --- --- --- --- --- --- --- ---

8/11/1999* --- --- --- --- --- --- --- --- --- --- --- --- ---

10/28/1999* --- --- --- --- --- --- --- --- --- --- --- --- ---

8/3/2000 --- --- --- --- --- --- --- --- --- --- --- --- ---

9/7/2000 --- --- --- --- --- --- --- --- --- --- --- --- ---

10/12/2000 --- --- --- --- --- --- --- --- --- --- --- --- ---

11/13/2000 --- --- --- --- --- --- --- --- --- --- --- --- ---

1/12/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

2/8/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

3/14/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

4/13/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

5/14/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

6/19/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

7/19/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

8/30/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

9/27/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

10/30/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

11/27/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

12/26/2001 --- --- --- --- --- --- --- --- --- --- --- --- ---

1/22/2002 --- --- --- --- --- --- --- --- --- --- --- --- ---

2/26/2002 --- --- --- --- --- --- --- --- --- --- --- --- ---

5/3/2002 --- --- --- --- --- --- --- --- --- --- --- --- ---

6/6/2002 --- --- --- --- --- --- --- --- --- --- --- --- ---

7/12/2002 --- --- --- --- --- --- --- --- --- --- --- --- ---

8/8/2002 --- --- --- --- --- --- --- --- --- --- --- --- ---

8/26/2002 --- --- --- --- --- --- --- --- --- --- --- --- ---

8/28/2002 --- --- --- --- --- --- --- --- --- --- --- --- 1.72 

9/9/2002 --- --- --- --- --- --- --- --- --- --- --- --- ---

10/3/2002 --- --- --- --- --- --- --- --- --- --- --- --- 4.14 

11/21/2002 --- --- --- --- --- --- --- --- --- --- --- --- 5.03 

12/18/2002 --- --- --- --- --- --- --- --- --- --- --- --- 4.52 

2/3/2003 --- --- --- --- --- --- --- --- --- --- --- --- 3.86 

2/13/2003 3.81 3.84 3.85 3.83 3.85 3.80 3.87 3.89 3.87 3.88 --- --- 3.85 

2/20/2003 --- --- --- --- --- --- --- --- --- --- --- --- 3.96 

2/26/2003 3.98 3.86 4.02 3.96 3.96 3.83 4.01 4.04 4.03 3.98 --- --- 4 

3/25/2003 4.95 4.88 4.92 4.87 4.91 4.88 4.95 4.95 4.94 4.98 --- --- 4.87 

4/23/2003 3.79 3.79 3.77 3.78 3.76 3.78 3.79 3.78 4.10 3.80 --- --- 3.73 

5/27/2003 4.52 4.45 4.49 4.45 4.49 4.50 4.55 4.54 4.52 4.54 --- --- 4.49 

6/30/2003 3.40 3.39 3.36 3.39 3.34 3.37 3.40 3.39 3.40 3.43 --- --- 3.34 

8/4/2003 4.49 4.40 4.42 4.41 4.45 4.47 4.51 4.54 4.47 4.50 --- --- 4.47 

8/29/2003 2.87 2.88 2.81 2.89 2.81 2.85 2.85 2.85 2.87 2.88 --- --- 2.79 

9/30/2003 2.59 2.62 2.56 2.64 2.57 2.59 2.58 2.57 2.61 2.61 --- --- 2.54 

11/3/2003 2.71 2.73 2.69 2.72 2.67 2.69 2.73 2.70 2.72 2.73 --- --- 2.63 

12/8/2003 2.58 2.58 2.54 2.57 2.53 2.56 2.59 2.57 2.59 2.58 --- --- ---

1/15/2004 2.62 2.61 2.36 2.62 2.56 2.61 2.63 2.60 2.61 2.62 --- --- ---

2/13/2004 3.51 3.46 3.47 3.46 3.46 3.50 3.54 3.50 3.51 3.50 --- --- ---

3/15/2004 3.26 3.23 3.11 3.24 3.22 3.22 3.26 3.25 3.25 3.28 --- --- ---

4/21/2004 2.72 2.72 2.67 2.73 2.69 2.71 2.73 2.72 2.73 2.74 --- --- 2.61 

5/20/2004 2.35 2.35 2.30 2.35 2.29 2.28 2.36 2.34 2.35 2.37 --- --- 2.22 

6/21/2004 1.96 1.99 1.93 1.98 1.95 1.94 1.95 1.95 1.96 1.97 --- --- 1.85 

7/26/2004 2.64 2.62 2.60 2.64 2.60 2.63 2.65 2.64 2.64 2.63 --- --- 2.55 

9/15/2004 4.08 4.03 4.03 4.02 4.03 4.07 4.08 4.09 4.08 4.10 3.95 3.95 3.95 

10/21/2004 2.96 2.91 2.85 2.89 2.85 2.88 2.89 2.87 2.89 2.89 2.73 2.72 2.72 

11/29/2004 2.06 2.09 2.00 2.06 2.02 2.03 2.04 2.03 2.07 2.05 1.85 1.84 1.88 

12/27/2004 2.18 2.18 2.13 2.18 2.14 2.16 2.20 2.17 2.20 2.17 1.98 1.97 2.01 

1/25/2005 2.56 2.50 2.44 2.50 2.47 2.50 2.50 2.49 2.50 2.51 2.30 2.28 2.28 

2/17/2005 2.72 2.72 2.65 2.7 2.69 2.72 2.72 2.69 2.74 2.73 2.54 2.53 2.52 

3/24/2005 3.75 3.70 3.71 3.62 3.71 3.75 3.79 3.77 3.75 3.75 3.63 3.62 3.62 

4/25/2005 2.75 2.74 2.69 2.75 2.70 2.74 2.73 2.72 2.74 2.76 2.55 2.53 2.55 

5/31/2005 1.94 1.93 1.87 1.94 1.87 1.93 1.95 1.92 1.94 1.93 1.73 1.70 1.72 

6/17/2005 1.96 1.99 1.88 1.97 1.89 1.95 1.91 1.90 1.95 1.96 1.73 1.70 1.67 

7/21/2005 2.87 2.88 2.79 2.85 2.81 2.86 2.85 2.84 2.87 2.87 2.69 2.66 2.66 

8/16/2005 4.13 4.09 4.09 4.05 4.08 4.12 4.12 4.11 4.10 4.13 4.00 3.99 3.97 

9/29/2005 2.11 2.14 2.05 2.14 2.06 2.07 2.10 2.08 2.12 2.12 1.93 1.93 1.92 

10/17/2005 3.16 3.17 3.10 3.16 3.10 3.13 3.15 3.13 3.15 3.17 2.96 3.00 2.97 

12/1/2005 2.93 2.93 2.87 2.89 2.90 2.91 2.92 2.87 2.92 2.93 2.73 2.72 2.73 

12/19/2005 4.08 3.99 4.03 3.96 4.01 4.04 4.11 4.10 4.06 4.10 3.88 3.86 3.90 

1/26/2006 3.66 3.63 3.63 3.61 3.63 3.63 3.66 3.66 3.65 3.68 3.55 3.55 3.52 

3/2/2006 4.20 4.13 4.17 4.12 4.16 4.15 4.21 4.21 4.16 4.22 4.04 4.03 4.05 

3/30/2006 2.67 2.67 2.62 2.66 2.61 2.63 2.65 2.64 2.66 2.68 2.48 2.46 2.49 

5/1/2006 1.78 1.87 1.79 1.86 1.81 1.82 1.82 1.81 1.86 1.82 1.66 1.66 1.64 

5/31/2006 1.40 1.42 1.34 1.44 1.35 1.37 1.38 1.37 1.39 1.40 1.19 1.19 1.19 

6/29/2006 2.16 2.16 2.11 2.15 2.1 2.15 2.15 2.13 2.16 2.15 1.96 1.95 1.92 

10/2/2006 2.14 2.75 2.10 2.17 2.09 2.14 2.09 2.08 2.12 2.13 1.98 1.97 1.93 

5/21/2007 0.49 0.57 0.43 0.55 0.45 0.47 0.46 0.45 0.50 0.50 0.36 0.31 ---

7/17/2007 0.70 0.76 0.66 0.76 0.66 0.68 0.66 0.67 0.71 0.70 0.60 0.57 ---

11/26/2007 1.65 1.69 1.63 1.67 1.61 1.50 1.62 --- 1.63 1.62 1.51 1.50 1.50 

5/5/2008 1.67 1.71 1.62 1.70 1.62 1.65 1.64 1.61 1.67 1.65 1.45 1.44 ---

8/28/2008 1.58 1.61 1.54 1.58 1.52 1.56 1.56 1.53 1.57 1.57 1.43 1.42 1.33 

2/10/2009 2.21 --- --- 2.20 2.16 2.19 2.18 2.19 2.22 2.21 2.00 1.99 1.96 

2/11/2009 2.15 2.17 2.11 2.15 2.11 2.15 2.14 2.13 2.16 2.14 --- --- ---

8/3/2009 2.56 2.68 2.52 2.54 2.50 2.55 2.56 2.56 2.57 2.55 2.40 2.40 2.36 

8/28/2009 2.04 2.09 1.99 2.07 2.01 2.03 2.03 2.02 2.06 2.03 1.82 1.72 1.79 

36 
 

 

 

 

 

 

 

 

 

 

 

 

Appendix 2. Monthly water-level data from wells at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, 

South Carolina, April 1998 to August 2009 (continued). 

[---. Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988; *, measurement made by Tetra Tech NUS, Inc.] 

Date 12PZ-03D 12PZ-03S 12PZ-04 12PZ-05 12PZ-06 12PZ-07 12PZ-08 12PZ-09 12PZ-10 

4/18/1998* --- --- --- --- --- --- --- --- ---

5/18/1998* --- --- --- --- --- --- --- --- ---

6/25/1998* --- --- --- --- --- --- --- --- ---

8/11/1999* --- --- --- --- --- --- --- --- ---

10/28/1999* --- --- --- --- --- --- --- --- ---

8/3/2000 --- --- --- --- --- --- --- --- ---

9/7/2000 --- --- --- --- --- --- --- --- ---

10/12/2000 --- --- --- --- --- --- --- --- ---

11/13/2000 --- --- --- --- --- --- --- --- ---

1/12/2001 --- --- --- --- --- --- --- --- ---

2/8/2001 --- --- --- --- --- --- --- --- ---

3/14/2001 --- --- --- --- --- --- --- --- ---

4/13/2001 --- --- --- --- --- --- --- --- ---

5/14/2001 --- --- --- --- --- --- --- --- ---

6/19/2001 --- --- --- --- --- --- --- --- ---

7/19/2001 --- --- --- --- --- --- --- --- ---

8/30/2001 --- --- --- --- --- --- --- --- ---

9/27/2001 --- --- --- --- --- --- --- --- ---

10/30/2001 --- --- --- --- --- --- --- --- ---

11/27/2001 --- --- --- --- --- --- --- --- ---

12/26/2001 --- --- --- --- --- --- --- --- ---

1/22/2002 --- --- --- --- --- --- --- --- ---

2/26/2002 --- --- --- --- --- --- --- --- ---

5/3/2002 --- --- --- --- --- --- --- --- ---

6/6/2002 --- --- --- --- --- --- --- --- ---

7/12/2002 --- --- --- --- --- --- --- --- ---

8/8/2002 --- --- --- --- --- --- --- --- ---

8/26/2002 --- --- --- --- --- --- --- --- ---

8/28/2002 --- --- --- --- --- --- --- --- ---

9/9/2002 --- --- --- --- --- --- --- --- ---

10/3/2002 --- --- --- --- --- --- --- --- ---

11/21/2002 --- --- --- --- --- --- --- --- ---

12/18/2002 --- --- --- --- --- --- --- --- ---

2/3/2003 --- --- --- --- --- --- --- --- ---

2/13/2003 --- --- --- --- --- --- --- --- ---

2/20/2003 --- --- --- --- --- --- --- --- ---

2/26/2003 --- --- --- --- --- --- --- --- ---

3/25/2003 --- --- --- --- --- --- --- --- ---

4/23/2003 --- --- --- --- --- --- --- --- ---

5/27/2003 --- --- --- --- --- --- --- --- ---

6/30/2003 --- --- --- --- --- --- --- --- ---

8/4/2003 --- --- --- --- --- --- --- --- ---

8/29/2003 --- --- --- --- --- --- --- --- ---

9/30/2003 --- --- --- --- --- --- --- --- ---

11/3/2003 --- --- --- --- --- --- --- --- ---

12/8/2003 --- --- --- --- --- --- --- --- ---

1/15/2004 --- --- --- --- --- --- --- --- ---

2/13/2004 --- --- --- --- --- --- --- --- ---

3/15/2004 2.92 -4.18 2.97 2.94 2.94 --- --- --- ---

4/21/2004 2.47 2.71 2.40 2.45 2.60 --- --- --- ---

5/20/2004 2.08 1.99 2.00 2.05 2.43 --- --- --- ---

6/21/2004 1.72 1.71 1.67 1.69 2.04 --- --- --- ---

7/26/2004 2.47 2.92 2.40 2.49 2.60 --- --- --- ---

9/15/2004 3.68 1.13 3.50 3.66 3.46 --- --- --- ---

10/21/2004 2.68 2.36 2.62 2.59 2.86 --- --- --- ---

11/29/2004 1.80 2.25 1.61 1.80 2.14 --- --- --- ---

12/27/2004 1.88 2.16 1.77 --- --- --- --- --- ---

1/25/2005 2.24 2.53 2.07 --- --- --- --- --- ---

2/17/2005 2.48 2.64 2.42 --- --- --- --- --- ---

3/24/2005 3.20 2.77 3.07 --- --- --- --- --- ---

4/25/2005 2.47 2.78 2.41 --- --- --- --- --- ---

5/31/2005 1.65 2.90 1.61 --- --- --- --- --- ---

6/17/2005 1.81 2.50 1.77 --- --- --- --- --- ---

7/21/2005 2.69 2.67 2.65 --- --- --- --- --- ---

8/16/2005 2.11 4.44 4.11 --- --- --- --- --- ---

9/29/2005 1.83 2.60 1.70 --- --- --- --- --- ---

10/17/2005 2.92 2.63 2.88 --- --- --- --- --- ---

12/1/2005 2.69 2.74 2.57 --- --- --- --- --- ---

12/19/2005 3.41 2.81 3.21 --- --- --- --- --- ---

1/26/2006 3.32 2.91 3.21 --- --- --- --- --- ---

3/2/2006 3.67 2.98 --- --- --- --- --- --- ---

3/30/2006 2.44 2.92 2.44 --- --- --- --- --- ---

5/1/2006 1.64 2.64 1.59 --- --- --- --- --- ---

5/31/2006 1.16 2.26 --- --- --- --- --- --- ---

6/29/2006 1.98 2.93 --- --- --- --- --- --- ---

10/2/2006 2.05 2.61 --- --- --- --- --- --- ---

5/21/2007 0.25 1.33 --- --- --- --- --- --- ---

7/17/2007 0.55 0.65 --- --- --- --- --- --- ---

11/26/2007 1.56 2.46 --- --- --- --- --- --- ---

5/5/2008 --- --- --- --- --- --- --- --- ---

8/28/2008 --- --- --- --- --- --- --- --- ---

2/10/2009 1.93 2.93 --- --- --- --- --- --- ---

2/11/2009 --- --- --- --- --- --- --- --- ---

8/3/2009 --- --- --- --- --- ---

8/28/2009 1.83 2.56 1.81 --- --- 1.87 1.87 1.71 1.73 

37 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009.
 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride;
 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter
 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding
 

time was exceeded]
 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-02D 8/30/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <10 <10 38 <5 2.1 <5 <5 <5 <2 

12MW-02D 11/29/2000 <0.18 <0.18 <0.21 0.22J --- --- <0.18 <0.17 <0.17 <0.5 <0.5 52 <0.18 2.7J <0.21 <0.18 <0.17 <0.15 

12MW-02D 2/27/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 11 <0.26 1.3J <0.13 <0.13 <0.14 <0.17 

12MW-02D 5/15/2001 <0.27 <0.29 <0.35 <0.26 --- --- <0.35 <0.27 <0.31 <0.5 <0.5 34 <0.33 2.3J <0.38 <0.43 1.5 <0.19 

12MW-02D 8/29/2001 <0.22 <0.23 <0.2 0.32J --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 29 <0.26 2.2J <0.13 <0.13 <0.14 <0.17 

12MW-02D 12/3/2001 <0.22 <0.23 <0.2 <0.16 --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 44 <0.26 2.9J <0.13 <0.13 <0.14 <0.17 

12MW-02D 2/27/2002 <0.22 <0.23 <0.2 <0.16 --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 7.8 <0.26 1.9J <0.13 <0.13 <0.14 <0.17 

12MW-02D 6/10/2002 <0.17 <0.64 <0.15 <0.13 <8.8 --- <0.12 <0.15 <0.28 <5 <5 53 <0.24 3.6 <0.1 <0.17 <0.13 <0.18 

12MW-02D 9/9/2002 0.52J 0.39J <0.18 1.2 <5.4 --- <0.24 <0.24 0.25J <10 <10 <10 <0.24 5.9 2.1 <0.19 1.2 <0.2 

12MW-02D 1/8/2003 <0.17 <0.64 <0.15 0.35J <8.8 --- <0.12 <0.15 <0.28 <10 <10 41 <0.24 3.2 0.2J <0.17 0.36J <0.18 

12MW-02D 4/9/2003 <0.16 <0.11 <0.14 <0.17 <3.2 --- <0.11 <0.16 <0.22 <0.5 <0.5 6.5 <0.12 2.7 <0.17 <0.14 <0.12 <0.1 

12MW-02D 7/16/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <5 <5 42 <0.43 2.4 <0.31 <0.34 <0.25 <0.11 

12MW-02D 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 --- --- --- <0.43 --- <0.31 <0.34 <0.25 <0.11 

12MW-02D 5/23/2005 <0.29 <0.21 <0.18 <0.17 <3.5 --- <0.22 <0.2 <0.23 <0.5 <0.5 20 <0.2 2 <0.21 <0.19 <0.28 <0.15 

12MW-02D 6/20/2006 <0.19 <0.19 <0.19 <0.15 <7.7 --- <0.2 <0.21 <0.19 <0.4 <0.5 17 <0.36 1.3J <0.16 <0.19 <0.3 <0.2 

12MW-02S 8/30/2000 <5 12 <5 200 --- --- <5 <5 <5 <10 <10 67 <5 1.9 <5 <5 <5 <2 

12MW-02S 11/29/2000 <0.18 5.7 <0.21 110 --- --- <0.18 <0.17 0.75 <0.5 <0.5 3.3 <0.18 <1 <0.21 <0.18 0.24J <0.15 

12MW-02S 2/27/2001 <2.2 8.6 <2 160 --- --- <1.6 <2.3 <2.4 <0.5 <0.5 37 <2.6 1.1J <1.3 <1.3 <1.4 <1.7 

12MW-02S 5/15/2001 <2.7 5.4J <3.5 81 --- --- <3.5 <2.7 <3.1 <0.5 <0.5 6.3 <3.3 1.7J <3.8 <4.3 6.4J <1.9 

12MW-02S 8/29/2001 <0.33 2.1J <0.3 23 --- <0.2 <0.24 <0.3 <0.56 <0.5 <0.5 <0.5 <0.47 1.9J <0.21 <0.35 4.8 <0.35 

12MW-02S 12/3/2001 <0.44 5.5 <0.39 69 --- <0.2 <0.32 <0.46 0.66J <0.5 <0.5 6.1 <0.51 2.3J <0.25 <0.26 0.47J <0.35 

12MW-02S 2/27/2002 <1.1 2.8J <0.98 46 --- <0.2 <0.81 <1.2 <1.2 <0.5 <0.5 1.2J <1.3 1.2J <0.63 <0.65 <0.68 <0.87 

12MW-02S 6/10/2002 <0.84 6.7J <0.76 84 <44 <1 <0.6 <0.75 <1.4 <5 <5 16 <1.2 2.7 <0.52 <0.87 <0.64 <0.88 

12MW-02S 9/9/2002 <1.3 5.4 <0.88 58 <27 --- <1.2 <1.2 <1 <10 <10 11 <1.2 1.8 <0.82 <0.96 <0.83 <0.99 

12MW-02S 1/8/2003 <0.84 15 <0.76 130 <44 <1 <0.6 <0.75 1.6J <10 <10 24 <1.2 1.8 <0.52 <0.87 2.3 <0.88 

12MW-02S 4/9/2003 <2.1 27 <1.8 250 <40 --- <1.4 <2 2.9J <0.5 <0.5 21 <1.4 3.3 <2.2 <1.8 <1.5 <1.3 

12MW-02S 7/15/2003 <2.7 14 <3.4 100 <64 --- <2.9 <3 <4 <50 <50 76 <4.3 1.3J <3.1 <3.4 <2.5 <1.1 

12MW-02S 9/17/2003 <1.6 26 <1.4 150 <32 --- <1.1 <1.6 <2.2 <5 <5 60 <1.2 1.2J <1.7 <1.4 2.1J 2.8J 

12MW-02S 1/14/2004 <2.1 29 <1.8 140 <40 --- <1.4 <2 <2.7 <10 <10 <10 <1.4 1.4J <2.2 <1.8 <1.5 <1.3 

12MW-02S 4/28/2004 <2.4 200 <2.7 530 69J --- <2.3 <2.8 11 <20 <20 140 <2.2 4.1 <2.6 <2.6 11 3.4J 

12MW-02S 8/16/2004 <0.27 <0.3 <0.34 1.9 <6.4 --- <0.29 <0.3 <0.4 <50 <50 670 <0.43 1.2J <0.31 <0.34 <0.25 <0.11 

12MW-02S 2/2/2005 <0.29 0.66J <0.18 5.4 <3.5 --- <0.22 <0.2 0.29J <0.5 <0.5 1.4J <0.2 <0.54 <0.21 <0.19 0.36J <0.15 

12MW-02S 5/23/2005 <0.29 0.54J <0.18 4.2 <3.5 --- <0.22 <0.2 <0.23 <0.5 <0.5 2.8 <0.2 1.4J <0.21 <0.19 <0.28 <0.15 

12MW-02S 9/12/2005 <0.21 1.1 <0.16 7.8 <7 --- <0.2 <0.23 0.18J <0.5 <0.5 9.3 <0.25 1.6J <0.16 <0.21 <0.19 0.37J 

12MW-02S 1/30/2006 <0.21 11 0.17J 55 10J --- <0.2 <0.23 0.84 <0.5 <0.5 10 <0.25 --- <0.16 <0.21 0.71 1.8 

12MW-02S 6/20/2006 <0.19 0.8 <0.19 6.1 <7.7 --- <0.2 <0.21 <0.19 <0.4 <0.5 1.1 <0.36 <0.54 <0.16 <0.19 <0.3 <0.2 

12MW-02S 9/11/2006 <0.19 0.66J <0.21 4.1 <6.6 --- <0.21 <0.2 <0.34 <0.4 <0.5 1.2 <0.3 --- <0.16 <0.17 <0.19 <0.17 

12MW-02S 5/21/2007 0.648J 4.55 <0.25 31.3 --- --- <0.3 <0.25 2.64 <2 <2 7.45J <2 1.2 0.316J <0.25 6.17 <0.5 

12MW-02S 11/28/2007 7.98 15.7 <0.25 90.8 --- --- <0.3 <0.25 11.7 <2 <2 43.3 <2 1.4 7.2 <0.25 43.2 1.11 

12MW-02S 2/10/2009 47 86.1 0.85J 462 --- --- <0.3 <0.25 48.1 <10 <10 21.6J <2 1.7 68.4 <0.25 362 3.86 

12MW-03D 8/30/2000 <5 <5 <5 <5 --- --- <5 <5 18 <10 <10 24 <5 1.6 <5 <5 6 <2 

12MW-03D 11/30/2000 <0.36 <0.35 <0.42 0.99J --- --- <0.37 <0.35 24 <0.5 <0.5 24 <0.36 2.1J <0.41 <0.36 5.8 <0.31 

12MW-03D 2/27/2001 <0.22 <0.23 <0.2 0.54 --- --- <0.16 <0.23 6.8 8.5 8.6 13 <0.26 <0.96 <0.13 <0.13 1.4 <0.17 

12MW-03D 5/15/2001 9.8 1.6 <0.35 7.5 --- --- <0.35 <0.27 15 <0.5 <0.5 22 <0.33 1.5J 6 <0.43 15 0.88 

12MW-03D 8/29/2001 <0.17 <0.64 <0.15 2.7 --- <0.2 <0.12 <0.15 19 <0.5 <0.5 21 <0.24 1.8J <0.1 <0.17 12 0.73 

38 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-03D 12/4/2001 <0.17 <0.64 <0.15 6.3 --- <0.2 <0.12 <0.15 44 <0.5 <0.5 47 <0.24 2.5J <0.1 <0.17 33 1.3 

12MW-03D 2/27/2002 <0.22 <0.23 <0.2 1.2 --- 0.07J <0.16 <0.23 13 <0.5 <0.5 15 <0.26 1.2J <0.13 <0.13 3.3 0.2J 

12MW-03D 6/11/2002 <0.17 <0.64 <0.15 3.2 <8.8 --- <0.12 <0.15 21 <5 <5 50 <0.24 1.4J <0.1 <0.17 19 <0.18 

12MW-03D 9/10/2002 0.57J 0.45J <0.18 2.1 <5.4 --- <0.24 <0.24 14 <10 <10 16 <0.24 1.2J 0.7 <0.19 4.6 0.3J 

12MW-03D 1/9/2003 <0.17 <0.64 <0.15 1.2 <8.8 <1 <0.12 <0.15 11 <10 <10 <10 <0.24 1.9 <0.1 <0.17 2 0.73 

12MW-03D 4/9/2003 <0.27 1.8 <0.34 1.9 <6.4 --- <0.29 <0.3 11 <0.5 <0.5 3.4 <0.43 2.1 <0.31 <0.34 3.2 0.65 

12MW-03D 7/15/2003 <0.16 1.5 <0.14 1.9 <3.2 --- <0.11 <0.16 13 <10 <10 68 <0.12 1.6J <0.17 0.15J 3.3 0.82 

12MW-03D 8/16/2004 <0.27 4.7 <0.34 4.3 <6.4 --- <0.29 <0.3 16 --- --- --- <0.43 --- <0.31 <0.34 4 1.8 

12MW-03D 5/25/2005 <0.29 1.5 <0.18 2.3 <3.5 --- <0.22 <0.2 8.7 <0.5 <0.5 18 <0.2 1.7J 0.23J <0.19 3.4 0.27J 

12MW-03D 6/21/2006 <0.19 0.56J <0.21 1.3 <6.6 --- <0.21 <0.2 6.9 <0.4 <0.5 2.7 <0.3 0.97J <0.16 <0.17 1.8 0.19J 

12MW-03D 5/21/2007 <0.3 <0.3 <0.25 1.12 --- --- <0.3 <0.25 10.1 <2 <2 32.1 <2 1.2 <0.25 <0.25 1.54 <0.5 

12MW-03D 5/6/2008 <0.3 2.74 <0.25 2.17 --- --- <0.3 <0.25 2.74 <2 <2 <6 <2 1.7 <0.25 <0.25 0.492J <0.5 

12MW-03D 9/1/2009 <0.5 0.44J <0.5 0.31J <5 --- <0.5 <0.5 2 --- --- --- <0.5 --- <0.5 <0.5 0.55 <0.5 

12MW-03S 8/30/2000 16,000 4,000 2,300 4,500 --- --- <5 <5 7,600 39 <10 140 <5 3.6 7,300 <5 9,500 1,600 

12MW-03SR 8/30/2000 19,000 2,000 1,100 5,200 --- --- <5 <5 8,500 <10 <10 190 <5 3.6 8,800 <5 12,000 850 

12MW-03S 11/30/2000 31,000 5,100 <170 11,000 --- --- <150 <140 7,000 32 17 160 <140 7.8 8,500 <140 9,000 160J 

12MW-03S 2/27/2001 3,700 2,100 <200 3,100 --- --- <160 <230 12,000 11 30 140 <260 3J 6,500 <130 5,200 230J 

12MW-03SR 2/27/2001 3,800 2,100 <200 3,300 --- --- <160 <230 12,000 12 34 190 <260 2.4J 7,100 <130 5,700 210J 

12MW-03S 5/15/2001 76,000 20,000 <1,700 29,000 --- --- <1700 <1,400 8,900 69 24 180 <1,700 24 11,000 <2100 7,900 <940 

12MW-03S 8/29/2001 73,000 23,000 <760 34,000 --- 51 <600 <750 12,000 75 53 190 <1,200 30 12,000 <870 16,000 <880 

12MW-03SR 8/29/2001 74,000 24,000 <350 30,000 52 <350 <270 13,000 120 80 290 <330 28 12,000 <430 12,000 1,200 

12MW-03S 12/5/2001 92,000 35,000 <760 46,000 --- 71 <600 <750 14,000 120 200 410 <1,200 48 16,000 <870 12,000 <880 

12MW-03SR 12/5/2001 93,000 36,000 <760 48,000 --- 72 <600 <750 15,000 140 190 430 <1200 46 16,000 <870 13,000 <880 

12MW-03S 2/27/2002 5,300 4,500 <200 5,400 --- 1.2 <160 <230 13,000 14 44 130 <260 6.7 7,100 <130 5,600 600 

12MW-03SR 2/27/2002 5,700 4,600 <200 5,800 --- 0.98 <160 <230 13,000 45 45 140 <260 6.6 7,500 <130 6,000 620 

12MW-03S 6/11/2002 32,000 16,000 260J 20,000 <8,800 26 <120 <150 13,000 64 140 400 <240 24 13,000 <170 5,900 1,100 

12MW-03SR 6/11/2002 33,000 16,000 270J 20,000 <8,800 26 <120 <150 14,000 66 130 390 <240 25 13,000 <170 6,100 1,200 

12MW-03S 9/10/2002 5,200 5,300 75 6,100 6,800 --- <6 <7.5 13,000 42 14 67 <12 10 7,700 <8.7 4,700 440 

12MW-03SR 9/10/2002 5,300 5,300 <190 6,300 <11,000 --- <150 <190 13,000 15 <10 62 <300 12 7,700 <220 4,900 480J 

12MW-03S 1/9/2003 4,000 3,300 45 5,100 2,700 4.1 <6 <7.5 7,300 17 <10 71 <12 7.7 4,600 <8.7 4,300 320 

12MW-03SR 1/9/2003 3,700 3,100 <76 4,600 <4,400 4.6 <60 <75 7,000 20 <10 44 <120 7.7 4,500 <87 4,200 360 

12MW-03S 4/10/2003 15,000 8,800 150J 12,000 12,000 12.4 <57 <80 9,900 15 51 64 <58 11 6,800 <72 3,600 640 

12MW-03SR 4/10/2003 15,000 8,500 140J 11,000 9,900 --- <57 <80 9,900 13 20 87 <58 12 6,700 <72 3,800 590 

12MW-03S 7/17/2003 580 960 <85 1,200 <1,600 0.094 <73 <74 3,100 <10 20 73 <110 <5 2,100 <84 1,900 140 

12MW-03SR 7/17/2003 590 990 <85 1,300 <1,600 0.073 <73 <74 3,200 1.8 6.7 81 <110 <5 2,100 <84 2,200 140 

12MW-03S 9/16/2003 1,700 1,200 <50 2,300 1,100J 1.35 <56 <53 2,800 <5 12 79 <59 5.2 2,600 <59 1,400 120J 

12MW-03SR 9/16/2003 --- --- --- --- --- 1.61 --- --- --- --- --- --- --- <5 --- --- --- ---

12MW-03S 1/14/2004 940 1,000 <17 1,700 1,000J 0.166 <15 <15 3,300 10 <10 80 <21 1,900 <17 3,000 150 

12MW-03SR 1/14/2004 --- --- --- --- --- 0.471 --- --- --- --- --- --- --- --- --- --- --- ---

12MW-03S 4/27/2004 8,100 5,100 65J 10,000 3,300 2.84 <29 <30 5,700 12J 28 170 <43 5.3 6,400 <34 5,300 380 

12MW-03SR 4/27/2004 --- --- --- --- --- 3.19 --- --- --- --- --- --- --- 5.2 --- --- --- ---

12MW-03S 8/18/2004 370 590 <27 1,000 <400 0.548 <23 <28 1,700 <5 <5 52 <22 2.8 1,200 <26 1,400 96 

12MW-03SR 8/18/2004 1,120 1,050 13.5 1,820 722 0.508 <0.33 1.22 2,070 --- --- --- 4.12J 3.1 1,710 <0.39 2,040 78.0J 

12MW-03S 2/2/2005 650 890 10.4 1,820 593 0.262 1 1.13 2,670 2.7J 5.3 28 5 <5 1,550 1 2,400 120 

12MW-03SR 2/2/2005 --- --- --- --- --- 0.287 --- --- --- --- --- --- --- <5 --- --- --- ---

12MW-03S 5/24/2005 67J 360 <85 540 <1,600 <0.07M <73 <74 1,700 <2.5 2.7J 39 <110 7 910 <84 1,500 79J 

39 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-03S 9/13/2005 29J 160 <13 270 940J --- <16 <18 760 <0.5 <0.5 2.3 <20 1.5J 470 <16 560 36J 

12MW-03S 1/31/2006 39J 260 <13 590 <560 --- <16 <18 1,700 <0.5 <0.5 5.1 <20 --- 770 <16 1700 58 

12MW-03S 6/21/2006 <9.4 92 <9.7 150 110 --- <9.8 <10 520 <0.4 <0.5 2.2 <18 1.6J 340 <9.6 370 23J 

12MW-03S 9/12/2006 <9.4 78 <11 120 <330 --- <10 <10 370 <0.4 <0.5 1.9 <15 --- 260 <8.5 260 13J 

12MW-03S 5/21/2007 9.04 201H 2.06 407H 220 --- <0.3 <0.25 1,410H <2 <2 11.0J <2 1.9 500H <0.25 1,220H 28.6 

12MW-03S 7/16/2007 1.88 59.7 0.727J 84 <20 --- <0.3 <0.25 291 <2 <2 <6 <2 2.3 111 <0.25 232 3.61 

12MW-03S 11/27/2007 3.74J 68.5 <1.25 140 --- --- <1.5 <1.25 393 <2 <2 41.0B <10 1.9 166 <1.25 391 15.1 

12MW-03S 5/6/2008 2.76J 77.5 <1.25 137 --- --- <1.5 <1.25 491 <2 <2 <6 <10 2.4 178 <1.25 484 21 

12MW-03S 2/12/2009 <1.63 57.4 <1.25 116 --- --- <1.5 <1.25 376 <10 <10 <10 <10 1.6 121 <1.25 377 8.34 

12MW-03S 7/20/2009 <10H 140 <10 290 <100 --- <10 <10 900 <10 <10 30 <10 1.9 390 <10 900H 50 

12MW-04D 8/28/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <2 <2 64 <5 2.7 <5 <5 <5 <2 

12MW-04D 11/28/2000 <0.18 <0.18 <0.21 <0.17 --- --- <0.18 <0.17 <0.17 <0.5 <0.5 100 <0.18 3.3J <0.21 <0.18 <0.17 <0.15 

12MW-04D 2/26/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 46 <0.26 1.3J <0.13 <0.13 <0.14 <0.17 

12MW-04D 5/14/2001 <0.27 <0.29 <0.35 <0.26 --- --- <0.35 <0.27 <0.31 <0.5 <0.5 57 <0.33 3J <0.38 <0.43 <0.34 <0.19 

12MW-04D 8/27/2001 <0.27 <0.29 <0.35 <0.26 --- <0.2 <0.35 <0.27 <0.31 <0.5 <0.5 39 <0.33 1.9J <0.38 <0.43 <0.34 <0.19 

12MW-04D 12/3/2001 <0.17 <0.64 <0.15 <0.13 --- --- <0.12 <0.15 <0.28 <0.5 <0.5 73 <0.24 4.3 <0.1 <0.17 <0.13 <0.18 

12MW-04D 2/26/2002 <0.22 <0.23 <0.2 <0.16 --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 33 <0.26 1J <0.13 <0.13 <0.14 <0.17 

12MW-04D 6/11/2002 <0.17 <0.64 <0.15 <0.13 <8.8 --- <0.12 <0.15 <0.28 <5 <5 62 <0.24 3 <0.1 <0.17 <0.13 <0.18 

12MW-04D 9/9/2002 <0.26 <0.24 <0.18 <0.33 <5.4 --- <0.24 <0.24 <0.2 <10 <10 38 <0.24 2.9 <0.16 <0.19 <0.17 <0.2 

12MW-04D 1/7/2003 <0.17 <0.64 <0.15 <0.13 <8.8 --- <0.12 <0.15 <0.28 <10 <10 <10 <0.24 2 <0.1 <0.17 <0.13 <0.18 

12MW-04D 4/7/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <0.5 <0.5 12 <0.43 2.1 <0.31 <0.34 0.28J <0.11 

12MW-04D 7/14/2003 <0.16 <0.11 <0.14 <0.17 <3.2 --- <0.11 <0.16 <0.22 <10 <10 53 <0.12 1.8 <0.17 <0.14 <0.12 <0.1 

12MW-04D 8/18/2004 <0.19 <0.2 <0.22 <0.18 <3.2 --- <0.18 <0.22 <0.15 --- --- --- <0.18 --- <0.2 <0.21 <0.2 <0.15 

12MW-04S 8/28/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <2 <2 38 <5 6.4 <5 <5 <5 <2 

12MW-04S 11/28/2000 <0.18 <0.18 <0.21 <0.17 --- --- <0.18 <0.17 <0.17 6.5 8.5 12 <0.18 7.7 <0.21 <0.18 <0.17 <0.15 

12MW-04S 2/26/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 77 <0.26 6.8 <0.13 <0.13 <0.14 <0.17 

12MW-04S 5/14/2001 <0.27 <0.29 <0.35 <0.26 --- --- <0.35 <0.27 <0.31 <0.5 <0.5 <0.5 <0.33 11 <0.38 <0.43 <0.34 <0.19 

12MW-04S 8/27/2001 <0.27 <0.29 <0.35 <0.26 --- <0.2 <0.35 <0.27 <0.31 <0.5 <0.5 2.1 <0.33 7.2 <0.38 <0.43 <0.34 <0.19 

12MW-04S 12/3/2001 <0.17 <0.64 <0.15 <0.13 --- --- <0.12 <0.15 <0.28 <0.5 <0.5 <0.5 <0.24 9.7 <0.1 <0.17 <0.13 <0.18 

12MW-04S 2/26/2002 <0.22 <0.23 <0.2 <0.16 --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 1.9 <0.26 5.2 <0.13 <0.13 <0.14 <0.17 

12MW-04S 6/11/2002 <0.17 <0.64 <0.15 <0.13 <8.8 --- <0.12 <0.15 <0.28 <5 <5 <5 <0.24 8 <0.1 <0.17 <0.13 <0.18 

12MW-04S 9/9/2002 <0.26 <0.24 <0.18 <0.33 <5.4 --- <0.24 <0.24 <0.2 <10 <10 16 <0.24 11 <0.16 <0.19 <0.17 <0.2 

12MW-04S 1/7/2003 <0.17 <0.64 <0.15 <0.13 <8.8 <1 <0.12 <0.15 <0.28 <10 <10 <10 <0.24 7.6 <0.1 <0.17 <0.13 <0.18 

12MW-04S 4/7/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <0.5 <0.5 22 <0.43 7.5 <0.31 <0.34 <0.25 <0.11 

12MW-04S 7/14/2003 <0.16 <0.11 <0.14 <0.17 <3.2 --- <0.11 <0.16 <0.22 <5 <5 25 <0.12 7.5 <0.17 <0.14 <0.12 <0.1 

12MW-04S 9/16/2003 <0.16 <0.11 <0.14 <0.17 <3.2 --- <0.11 <0.16 <0.22 <5 <5 35 <0.12 11 <0.17 <0.14 <0.12 <0.1 

12MW-04S 1/12/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <10 <10 <10 <0.43 7.2 <0.31 <0.34 <0.25 <0.11 

12MW-04S 4/26/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <5 <5 29 <0.43 10 <0.31 <0.34 <0.25 <0.11 

12MW-04S 8/18/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <5 <5 26 <0.43 9.1 <0.31 <0.34 <0.25 <0.11 

12MW-04S 2/1/2005 <0.29 <0.21 <0.18 <0.17 3.9J --- <0.22 <0.2 <0.23 <0.5 0.65J 30 <0.2 7.5 <0.21 <0.19 <0.28 <0.15 

12MW-04S 5/23/2005 <0.29 <0.21 <0.18 <0.17 10J --- <0.22 <0.2 <0.23 <0.5 <0.5 7.4 <0.2 8.3 <0.21 <0.19 <0.28 <0.15 

12MW-04S 9/12/2005 <0.21 <0.17 <0.16 <0.2 <7 --- <0.2 <0.23 <0.18 <0.5 <0.5 18 <0.25 9.6 <0.16 <0.21 <0.19 <0.2 

12MW-04S 1/30/2006 <0.21 <0.17 <0.16 <0.2 <7 --- <0.2 <0.23 <0.18 <0.5 <0.5 10 <0.25 --- <0.16 <0.21 <0.19 <0.2 

12MW-04S 6/21/2006 <0.19 <0.21 <0.21 <0.14 <6.6 --- <0.21 <0.2 <0.34 <0.4 <0.5 3.7 <0.3 7.8 <0.16 <0.17 <0.19 <0.17 

12MW-04S 9/11/2006 <0.19 <0.21 <0.21 <0.14 <6.6 --- <0.21 <0.2 <0.34 <0.4 <0.5 3.5 <0.3 --- <0.16 <0.17 <0.19 <0.17 

12MW-04S 5/22/2007 <0.3 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 <2 <2 <6 <2 5.7 <0.25 <0.25 <0.25 <0.5 

40 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-04S 11/28/2007 <0.3 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 <2 <2 50.3 <2 7.5 <0.25 <0.25 <0.25 <0.5 

12MW-04S 2/10/2009 <0.325 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 <10 <10 31.2 <2 <0.45 <0.25 <0.25 <0.5 

12MW-05D 8/30/2000 <5 <5 <5 <5 --- --- <5 <5 6.2 <10 <10 <10 <5 2.6 <5 <5 9.6 <2 

12MW-05D 11/30/2000 1.4 <0.18 <0.21 2.6 --- --- <0.18 <0.17 2.5 <0.5 <0.5 5.9 <0.18 2.5J 3.1 <0.18 5.3 <0.15 

12MW-05D 2/28/2001 <0.22 <0.23 <0.2 0.68 --- --- <0.16 <0.23 1.4 6.6 <0.5 10 <0.26 3.6 <0.13 <0.13 1.8 <0.17 

12MW-05D 5/15/2001 <0.27 <0.29 <0.35 0.83J --- --- <0.35 <0.27 2.1 <0.5 <0.5 13 <0.33 3.7 <0.38 <0.43 1.8 <0.19 

12MW-05D 8/28/2001 <0.17 <0.64 <0.15 0.97 --- 0.36 <0.12 <0.15 3.5 <0.5 5.1 34 <0.24 5.4 <0.1 <0.17 0.55 <0.18 

12MW-05D 12/4/2001 <0.22 <0.23 <0.2 0.3J --- <0.2 <0.16 <0.23 0.75J <0.5 <0.5 6.4 <0.26 4.3 <0.13 <0.13 1 <0.17 

12MW-05D 2/28/2002 <0.22 <0.23 <0.2 0.37J --- --- <0.16 <0.23 0.76J <0.5 <0.5 5.9 <0.26 2.9J <0.13 <0.13 0.74 <0.17 

12MW-05D 6/11/2002 <0.17 <0.64 <0.15 0.39J <8.8 --- 0.15J <0.15 0.97J <5 <5 6J <0.24 4 <0.1 <0.17 0.89 <0.18 

12MW-05D 9/10/2002 <0.26 <0.24 <0.18 <0.33 <5.4 --- <0.24 <0.24 0.54J <10 <10 <10 <0.24 3.7 <0.16 <0.19 0.56J <0.2 

12MW-05D 1/8/2003 <0.17 <0.64 <0.15 0.34J <8.8 --- <0.12 <0.15 0.39J <10 <10 <10 <0.24 3 <0.1 <0.17 0.64 <0.18 

12MW-05D 4/7/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <0.5 <0.5 6.8 <0.43 3.7 <0.31 <0.34 0.47J <0.11 

12MW-05I 8/30/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <10 <10 16 <5 1.8 <5 <5 <5 <2 

12MW-05I 11/30/2000 23 3.3 <0.42 12 --- --- <0.37 <0.35 23 <0.5 <0.5 22 <0.36 2.1J 12 <0.36 20 0.43J 

12MW-05I 2/28/2001 0.33J <0.23 <0.2 0.46J --- --- <0.16 <0.23 1.1 <0.5 <0.5 9.8 <0.26 <0.96 0.46 <0.13 0.73 <0.17 

12MW-05I 5/16/2001 1.4 <0.29 <0.35 0.6J --- --- <0.35 <0.27 0.31J <0.5 <0.5 13 <0.33 1.2J 0.86J <0.43 0.71J <0.19 

12MW-05I 8/29/2001 0.48J <0.29 <0.35 0.59J --- <0.2 <0.35 <0.27 <0.31 <0.5 <0.5 12 <0.33 <0.96 0.7J <0.43 0.73J <0.19 

12MW-05I 12/4/2001 <0.22 <0.23 <0.2 0.25J --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 17 <0.26 3.5 <0.13 <0.13 1 <0.17 

12MW-05I 2/27/2002 <0.22 <0.23 <0.2 0.4J --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 11 <0.26 1.3J <0.13 <0.13 1.5 <0.17 

12MW-05I 6/11/2002 <0.17 <0.64 <0.15 0.35J <8.8 --- <0.12 <0.15 <0.28 <5 <5 14J <0.24 1.1J <0.1 <0.17 1 <0.18 

12MW-05I 9/10/2002 <0.26 <0.24 <0.18 <0.33 <5.4 --- <0.24 <0.24 <0.2 <10 <10 <10 <0.24 1.4J 0.17J <0.19 0.63 <0.2 

12MW-05I 1/8/2003 <0.17 <0.64 <0.15 <0.13 <8.8 <1 <0.12 <0.15 <0.28 <10 <10 14 <0.24 0.99J <0.1 <0.17 0.61 <0.18 

12MW-05I 4/7/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <0.5 <0.5 7.9 <0.43 2 <0.31 <0.34 0.3J <0.11 

12MW-05I 7/14/2003 <0.16 <0.11 <0.14 <0.17 <3.2 --- <0.11 <0.16 <0.22 <1 <1 7.1 <0.12 0.69J <0.17 <0.14 0.37J <0.1 

12MW-05I 8/18/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 --- --- --- <0.43 --- <0.31 <0.34 <0.25 <0.11 

12MW-05I 5/25/2005 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <0.5 <0.5 8.1 <0.43 1.2J <0.31 <0.34 0.61J <0.11 

12MW-05I 6/22/2006 <0.19 <0.21 <0.21 <0.14 <6.6 --- <0.21 <0.2 <0.34 <0.4 <0.5 8.1 <0.3 1.4J <0.16 <0.17 <0.19 <0.17 

12MW-05S 8/30/2000 640 66 13 10,000 --- --- <5 <5 1,500 <10 <10 170 <5 2.4 580 <5 27,000 33 

12MW-05SR 8/30/2000 730 71 15 12,000 --- --- <5 <5 1,600 <10 <10 170 <5 2.4 670 <5 31,000 36 

12MW-05S 11/30/2000 440 <35 <42 8,500 --- --- <37 <35 890 <0.5 8.8 170 <36 2.5J 400 <36 22,000 <31 

12MW-05SR 11/30/2000 450J <140 <170 8,400 --- --- <150 <140 710 <0.5 <0.5 150 <140 4.5J 260J <140 21,000 <120 

12MW-05S 2/28/2001 360J <230 <200 7,100 --- --- <160 <230 580J <0.5 6 130 <260 1.6J 270J <130 12,000 <170 

12MW-05SR 2/28/2001 360J <230 <200 7,200 --- --- <160 <230 580J 8.6 6.6 140 <260 2.3J 280J <130 12,000 <170 

12MW-05S 5/16/2001 590J <290 <350 8,900 --- --- <350 <270 690J <0.5 <0.5 130 <330 3.7 500J <430 16,000 <190 

12MW-05SR 5/16/2001 510J <290 <350 9,200 --- --- <350 <270 690J <0.5 4.6 99 <330 3.2 440J <430 17,000 <190 

12MW-05S 8/29/2001 2,600 310J <350 16,000 --- 0.72 <350 <270 1,400 8.9 <0.5 110 <330 1.7J 3,100 <430 23,000 <190 

12MW-05SR 8/29/2001 1,900 <290 <350 13,000 --- 1.1 <350 <270 1,300 <0.5 <0.5 110 <330 1.8J 2,200 <430 21,000 <190 

12MW-05S 12/4/2001 <330 <1300 <300 13,000 --- <0.2 <240 <300 1,100J <0.5 <0.5 110 <470 4 740J <350 25,000 <350 

12MW-05SR 12/4/2001 <330 <1300 <300 14,000 --- <0.2 <240 <300 1,200J <0.5 <0.5 140 <470 3.7 <210 <350 25,000 <350 

12MW-05S 2/28/2002 <440 <460 <390 9,300 --- <0.2 <320 <460 800J <0.5 <0.5 85 <510 2J 360J <260 18,000 <350 

12MW-05S 6/11/2002 790J <1300 <300 13,000 <18,000 <1 <240 <300 1,600J <5 <5 170 <470 3.3 <210 <350 23,000 <350 

12MW-05SR 6/11/2002 840J <1300 <300 14,000 <18,000 --- <240 <300 1,700J <5 <5 170 <470 3.7 <210 <350 23,000 <350 

12MW-05S 9/10/2002 490 74J <15 12,000 <880 --- <12 <15 1,500 <10 <10 56 <24 4.9 540 <17 20,000 52J 

12MW-05SR 9/10/2002 <330 <1300 <300 12,000 <18,000 --- <240 <300 1,700J <10 <10 130 <470 4.7 560J <350 20,000 <350 

12MW-05S 1/8/2003 <33 <130 <30 11,000 <1,800 <1 <24 <30 1,000 <10 <10 160 <47 3.4 500 <35 20,000 <35 

41 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-05SR 1/8/2003 <330 <1300 <300 11,000 <18,000 <1 <240 <300 1,200J <10 <10 35 <470 3 550J <350 20,000 <350 

12MW-05S 4/10/2003 <53 <60 <68 9,400 <1,300 <1 <58 <59 1,200 <0.5 1.4 39 <85 2.2 <61 <67 21,000 <21 

12MW-05SR 4/10/2003 <330 <210 <280 8,100 <6,300 --- <230 <320 1,100J <0.5 2.5 62 <230 2.4 380J <290 18,000 <210 

12MW-05S 7/17/2003 <330 <210 <280 10,000 <6,300 <0.07 <230 <320 1,200J <13 <13 140 <230 <5 740J <290 20,000 <210 

12MW-05SR 7/17/2003 <330 <210 <280 9,900 <6,300 --- <230 <320 1,200J <10 <10 130 <230 --- 720J <290 19,000 <210 

12MW-05S 9/16/2003 <460 <430 <400 8,900 <6,800 <0.07 <450 <420 1,200J <5 5.2 95 <470 <5 660J <470 16,000 <350 

12MW-05SR 9/16/2003 <460 <430 <400 9,300 <6,800 --- <450 <420 1,300J <5 <5 100 <470 --- 700J <470 18,000 <350 

12MW-05S 1/14/2004 230 <60 <68 8,600 <1,300 0.07 <58 <59 1,200 <10 <10 62 <85 --- 620 <67 18,000 <21 

12MW-05SR 1/14/2004 <530 <600 <680 9,000 <13,000 --- <580 <590 1,200J <10 <10 78 <850 --- 650J <670 18,000 <210 

12MW-05S 4/27/2004 <330 <370 <420 9,000 <8,000 <0.07 <360 <370 1,300J --- --- --- <530 <5 770J <420 18,000 <130 

12MW-05SR 4/27/2004 <530 <600 <680 7,500 <13,000 --- <580 <590 1,300J <5 <5 170 <850 --- 810J <670 20,000 <210 

12MW-05S 8/18/2004 290 68J <43 9,600 <630 <0.067 <36 <44 1,400 <50 <50 180 <35 2.5 910 <42 22,000 120 

12MW-05SR 8/18/2004 <380 <390 <430 8,800 <6,300 --- <360 <440 1,500 <20 <20 140 <350 --- 1,000J <420 22,000 <310 

12MW-05S 2/2/2005 157J <200 <36 6,330 <13 0.084 1 1.95 1,490 <5 5.5J 100 410J <5 1,470 3.59 13,100 130 

12MW-05SR 2/2/2005 <580 <420 <360 8,900 <7,000 --- <440 <400 2,000 <5 <5 100 1,100J --- 2,300 <380 20,000 <290 

12MW-05S 5/24/2005 160 40J <15 6,200 <280 0.064JM <17 <16 2,300 <2.5 <2.5 92 <16 43 2,600 <15 15,000 170 

12MW-05SR 5/24/2005 <530 <600 <680 5,900 <13,000 --- <580 <590 2,300J <2.5 <2.5 92 <850 --- 2,800 <670 16,000 <210 

12MW-05S 9/13/2005 79 35J <13 4,000 <560 --- <16 <18 2,500 <0.5 <0.5 4.6 <20 --- 2,400 <16 11,000 140 

12MW-05SR 9/13/2005 <210 <170 <160 3,900 <7,000 --- <200 <230 2,100 <0.5 <0.5 110 <250 --- 2,200 <210 9,800 <200 

12MW-05S 1/31/2006 99J 65J <18 3,600 <350 --- <22 <20 2,300 <0.5 1.1J 69 34J --- 2,300 <19 11,000 160 

12MW-05SR 1/31/2006 <210 <170 <160 3,600 <7,000 --- <200 <230 2,400 <0.5 0.78J 73 <250 --- 2,500 <210 11,000 <200 

12MW-05S 6/20/2006 120J 100J <97 1,700 30J --- <98 <100 2,200 1.1J 2.7 130 <180 3.3 1,500 <96 6,800 170J 

12MW-05SR 6/20/2006 120J 120J <97 1,900 <3,900 --- <98 <100 2,500 0.88J 2.4 100 <180 --- 1,700 <96 6,900 200J 

12MW-05S 9/12/2006 100J 100J <97 1,700 <3,900 --- <98 <100 1,900 0.43J 1.1J 130 <180 --- 1,000 <96 6,100 170J 

12MW-05SR 9/12/2006 99J 98J <97 1,500 <3,900 --- <98 <100 1,900 <0.4 0.6J 110 <180 --- 980 <96 5,800 150J 

12MW-05S 5/22/2007 22.5 59.7 1.68 990 <20 --- <0.3 <0.25 914 <2 2.71J 2,070 <2 2 296 0.79J 3,400 47.7 

12MW-05SR 5/22/2007 23.3 60.9 1.6 1,050 --- --- <0.3 0.28J 971 <2 5.38J 2,520 <2 --- 325 0.68J 3,510 49.4 

12MW-05S 7/17/2007 27.2J 63.2 <12.5 874 <1,000 --- <15 <12.5 948 <2 <2 3,100 <100 2.7 355 <12.5 3,190 44.4J 

12MW-05SR 7/17/2007 20.8J 60.3 <12.5 869 --- --- <15 <12.5 927 <2 <2 3,390 <100 --- 358 <12.5 3,190 45.2J 

12MW-05S 11/27/2007 9.52J 33.8 <6.25 858 --- --- <7.5 <6.25 685 <100 <100 3,480B <50 2.6 208 <6.25 2,230 46.5 

12MW-05S 5/6/2008 6.38J 55.5 <5 586 --- --- <6 <5 580 <2 <2 8,870 <40 2.6 91.3 <5 1,210 16.7J 

12MW-05SR 5/6/2008 6.39J 56.7 <5 572 --- --- <6 <5 605 <2 <2 7,730 <40 2.8 85.4 <5 1,190 15.7J 

12MW-05S 2/11/2009 6.86J 126 <5 564 --- --- <6 <5 510 <10 12.9J 6,490 <40 2.4 64.1 <5 666 <10 

12MW-05SR 2/11/2009 <6.5 107 <5 496 --- --- <6 <5 455 <10 12.3J 6,250 <40 --- 56.3 <5 629 <10 

12MW-05S 7/20/2009 <5.0H 58 <5 370 <50H --- 1.3JH <5 360 <10 23 6,200 <5.0H 2.2 68 <5.0H 450 37 

12MW-06D 8/29/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <2 <2 27 <5 1.8 <5 <5 <5 <2 

12MW-06D 11/29/2000 <0.18 <0.18 <0.21 <0.17 --- --- <0.18 <0.17 <0.17 <0.5 <0.5 16 <0.18 2.8J <0.21 <0.18 <0.17 <0.15 

12MW-06D 2/27/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 16 <0.26 1.5J <0.13 <0.13 <0.14 <0.17 

12MW-06D 5/14/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 9.2 <0.26 3.9 <0.13 <0.13 <0.14 <0.17 

12MW-06D 8/28/2001 <0.17 <0.64 <0.15 <0.13 --- --- <0.12 <0.15 <0.28 <0.5 <0.5 310 <0.24 2.1J <0.1 <0.17 <0.13 <0.18 

12MW-06D 7/16/2007 <0.3 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.25 <0.25 <0.25 <0.5 

12MW-06D 11/28/2007 <0.3 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 <2 <2 21.9J <2 --- <0.25 <0.25 <0.25 <0.5 

12MW-06D 2/11/2009 <0.325 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.45 <0.25 <0.25 <0.5 

12MW-06S 8/29/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <2 <2 36 <5 2 <5 <5 <5 <2 

12MW-06S 11/29/2000 0.42J <0.18 <0.21 <0.17 --- --- <0.18 <0.17 <0.17 <0.5 <0.5 46 <0.18 4.3 <0.21 <0.18 <0.17 <0.15 

12MW-06S 2/27/2001 0.29J <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 23 <0.26 1.4J <0.13 0.15J <0.14 <0.17 

42 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-06S 5/14/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 11 <0.26 2.9J <0.13 <0.13 <0.14 <0.17 

12MW-06S 8/28/2001 <0.27 <0.29 <0.35 <0.26 --- --- <0.35 <0.27 <0.31 <0.5 <0.5 15 <0.33 3.2 <0.38 <0.43 <0.34 <0.19 

12MW-06S 12/4/2001 <0.22 <0.23 <0.2 <0.16 --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 430 <0.26 3.4 <0.13 <0.13 0.15J <0.17 

12MW-06S 2/26/2002 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 71 <0.26 3.5 <0.13 <0.13 <0.14 <0.17 

12MW-06S 6/11/2002 <0.17 <0.64 <0.15 <0.13 <8.8 --- <0.12 <0.15 <0.28 <5 <5 75 <0.24 5.1 <0.1 <0.17 <0.13 <0.18 

12MW-06S 9/9/2002 <0.26 <0.24 <0.18 <0.33 <5.4 --- <0.24 <0.24 <0.2 <10 <10 28 <0.24 4.8 <0.16 <0.19 <0.17 <0.2 

12MW-06S 1/7/2003 <0.26 <0.24 <0.18 <0.33 <5.4 <1 <0.24 <0.24 <0.2 <10 <10 44 <0.24 3.6 <0.16 <0.19 <0.17 <0.2 

12MW-06S 4/8/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <0.5 <0.5 20 <0.43 2.5 <0.31 <0.34 <0.25 <0.11 

12MW-06S 8/19/2004 <0.19 <0.2 <0.22 <0.18 <3.2 --- <0.18 <0.22 <0.15 --- --- --- <0.18 --- <0.2 <0.21 <0.2 <0.15 

12MW-06S 5/23/2005 <0.29 <0.21 <0.18 <0.17 <3.5 --- <0.22 <0.2 <0.23 --- --- --- <0.2 --- <0.21 <0.19 <0.28 <0.15 

12MW-06S 6/22/2006 <0.19 <0.21 <0.21 <0.14 <6.6 --- <0.21 <0.2 <0.34 --- --- --- <0.3 --- <0.16 <0.17 <0.19 <0.17 

12MW-06S 5/21/2007 <0.3H <0.3H <0.25H <0.3H --- --- <0.3H <0.25H <0.3H --- --- --- <2H --- <0.25H <0.25H <0.25H <0.5H 

12MW-06S 5/6/2008 <0.3 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.25 <0.25 <0.25 <0.5 

12MW-06S 2/11/2009 <0.33 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.45 <0.25 <0.25 <0.5 

12MW-07D 8/28/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <2 <2 19 <5 2.1 <5 <5 <5 <2 

12MW-07D 11/29/2000 <0.18 <0.18 <0.21 <0.17 --- --- <0.18 <0.17 <0.17 <0.5 <0.5 10 <0.18 2.3J <0.21 <0.18 <0.17 <0.15 

12MW-07D 2/26/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 5.8 20 <0.26 1.4J <0.13 <0.13 <0.14 <0.17 

12MW-07D 5/14/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 9.4 <0.26 2.2J <0.13 <0.13 <0.14 <0.17 

12MW-07D 8/29/2001 0.7J <0.29 <0.35 0.78J --- <0.2 <0.35 <0.27 <0.31 11 <0.5 11 <0.33 1.1J 1J <0.43 0.44J <0.19 

12MW-07S 8/28/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <2 <2 120 <5 3.1 <5 <5 <5 <2 

12MW-07S 11/28/2000 <0.18 <0.18 <0.21 <0.17 --- --- <0.18 <0.17 <0.17 <0.5 <0.5 120 <0.18 1.5J <0.21 <0.18 <0.17 <0.15 

12MW-07S 2/26/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 340 <0.26 <0.96 <0.13 0.14J <0.14 <0.17 

12MW-07S 5/14/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 190 <0.26 1.2J <0.13 <0.13 <0.14 <0.17 

12MW-07S 8/29/2001 0.55J <0.29 <0.35 0.67J --- <0.2 <0.35 <0.27 <0.31 <0.5 <0.5 150 <0.33 <0.96 0.77J <0.43 0.38J <0.19 

12MW-07S 5/22/2007 <0.3 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.25 <0.25 <0.25 <0.5 

12MW-07S 11/28/2007 <0.3 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 <2 <2 45 <2 1.05 <0.25 <0.25 <0.25 <0.5 

12MW-07S 2/12/2009 <0.325 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.45 <0.25 <0.25 <0.5 

12MW-08D 8/29/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <2 <2 7.6 <5 5.3 <5 <5 <5 <2 

12MW-08D 11/28/2000 <0.18 <0.18 <0.21 <0.17 --- --- <0.18 <0.17 <0.17 <0.5 <0.5 8.3 <0.18 3J <0.21 <0.18 <0.17 <0.15 

12MW-08D 2/26/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 5.7 <0.26 1.8J <0.13 <0.13 <0.14 <0.17 

12MW-08D 5/14/2001 <0.27 <0.29 <0.35 <0.26 --- --- <0.35 <0.27 <0.31 <0.5 <0.5 2.5 <0.33 3.1J <0.38 <0.43 <0.34 <0.19 

12MW-08D 8/27/2001 <0.27 <0.29 <0.35 <0.26 --- <0.2 <0.35 <0.27 <0.31 <0.5 <0.5 5.4 <0.33 3.9 <0.38 <0.43 <0.34 <0.19 

12MW-08S 8/28/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <2 <2 150 <5 1.3 <5 <5 <5 <2 

12MW-08S 11/28/2000 <0.18 <0.18 <0.21 <0.17 --- --- <0.18 <0.17 <0.17 <0.5 <0.5 52 <0.18 <1 <0.21 <0.18 <0.17 <0.15 

12MW-08S 2/26/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 53 <0.26 <0.96 <0.13 <0.13 <0.14 <0.17 

12MW-08S 5/14/2001 <0.27 <0.29 <0.35 <0.26 --- --- <0.35 <0.27 <0.31 <0.5 <0.5 12 <0.33 2.5J <0.38 <0.43 <0.34 <0.19 

12MW-08S 8/27/2001 <0.27 <0.29 <0.35 <0.26 --- --- <0.35 <0.27 <0.31 <0.5 <0.5 3.7 <0.33 1.7J <0.38 <0.43 <0.34 <0.19 

12MW-09D 8/29/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <2 <2 720 <5 3 <5 <5 <5 <2 

12MW-09D 11/29/2000 <0.18 0.24J <0.21 0.18J --- --- <0.18 <0.17 <0.17 <0.5 <0.5 940 <0.18 5.4 <0.21 <0.18 <0.17 <0.15 

12MW-09D 2/27/2001 <0.22 0.34J <0.2 0.34J --- --- <0.16 <0.23 <0.24 <0.5 <0.5 640 <0.26 4.8 <0.13 <0.13 <0.14 <0.17 

12MW-09D 5/15/2001 <0.27 0.31J <0.35 0.3J --- --- <0.35 <0.27 <0.31 <0.5 <0.5 380 <0.33 5 <0.38 <0.43 <0.34 <0.19 

12MW-09D 8/29/2001 <0.22 0.33J <0.2 0.52 --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 570 <0.26 4.4 <0.13 <0.13 <0.14 <0.17 

12MW-09D 12/3/2001 <0.17 <0.64 <0.15 <0.13 --- <0.2 <0.12 <0.15 <0.28 13 <0.5 550 <0.24 4.6 <0.1 <0.17 <0.13 <0.18 

12MW-09D 2/26/2002 <0.22 <0.23 <0.2 0.19J --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 310 <0.26 5.1 <0.13 <0.13 <0.14 <0.17 

12MW-09D 6/10/2002 <0.17 <0.64 <0.15 <0.13 <8.8 --- <0.12 <0.15 <0.28 <5 <5 360 <0.24 5.8 <0.1 <0.17 <0.13 <0.18 

12MW-09D 9/10/2002 <0.26 <0.24 <0.18 <0.33 <5.4 --- <0.24 <0.24 <0.2 <10 <10 230 <0.24 5.2 <0.16 <0.19 <0.17 <0.2 

43 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-09D 1/7/2003 <0.17 <0.64 <0.15 <0.13 <8.8 --- <0.12 <0.15 <0.28 <10 <10 300 <0.24 4.1 <0.1 <0.17 <0.13 <0.18 

12MW-09D 4/9/2003 <0.16 0.14J <0.14 <0.17 <3.2 --- <0.11 <0.16 <0.22 <0.5 <0.5 340 <0.12 4.4 <0.17 <0.14 <0.12 <0.1 

12MW-09D 7/16/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <50 <50 370 <0.43 4 <0.31 <0.34 <0.25 <0.11 

12MW-09D 8/16/2004 <0.19 <0.2 <0.22 <0.18 <3.2 --- <0.18 <0.22 <0.15 --- --- --- <0.18 --- <0.2 <0.21 <0.2 <0.15 

12MW-09S 8/29/2000 <5 120 <5 120 --- --- <5 <5 <5 <2 <2 61 <5 2.5 <5 <5 <5 <2 

12MW-09S 11/29/2000 1 97 <0.21 98 --- --- <0.18 <0.17 0.3J <0.5 5.6 130 <0.18 1.9J <0.21 <0.18 0.94 0.49J 

12MW-09S 2/27/2001 0.79 86 <0.2 86 --- --- <0.16 <0.23 0.32J <0.5 <0.5 92 <0.26 1.9J <0.13 <0.13 0.89 0.24J 

12MW-09S 5/15/2001 <2.2 73 <2.8 60 --- --- <2.8 <2.2 <2.4 <0.5 5.9 270 <2.7 3.3 <3 <3.4 <2.7 <1.5 

12MW-09S 8/29/2001 <1.7 76 <1.6 83 --- <0.2 <1.3 <1.8 <1.9 <0.5 <0.5 230 <2.1 2.2J <1 <1 1.3J <1.4 

12MW-09S 12/3/2001 <1.3 73 <1.2 69 --- <0.2 <0.95 <1.2 <2.2 <0.5 <0.5 120 <1.9 4 <0.82 <1.4 <1 <1.4 

12MW-09S 2/26/2002 <1.7 51 <1.6 52 --- --- <1.3 <1.8 <1.9 <0.5 <0.5 64 <2.1 2.2J <1 <1 <1.1 <1.4 

12MW-09S 6/10/2002 <1.3 100 <1.2 110 290 --- <0.95 <1.2 <2.2 <5 <5 57 <1.9 3.2 <0.82 <1.4 <1 <1.4 

12MW-09S 9/10/2002 <1 35 <0.7 31 150 --- <0.96 <0.98 <0.81 <10 <10 220 <0.95 2.4 <0.66 <0.77 1.3J <0.79 

12MW-09S 1/7/2003 <0.67 20 <0.6 18 63J 7 <0.48 <0.6 <1.1 <10 <10 560 <0.94 10 <0.41 <0.7 <0.51 <0.7 

12MW-09S 4/8/2003 <0.33 22 <0.28 23 68 --- <0.23 <0.32 <0.44 <0.5 <0.5 630 <0.23 4 <0.34 <0.29 0.47J <0.21 

12MW-09S 7/15/2003 <0.53 30 <0.68 32 80 --- <0.58 <0.59 <0.8 <50 <50 660 <0.85 2.4 <0.61 1.5J 0.71J 0.39J 

12MW-09S 9/17/2003 <0.33 28 <0.28 28 85 --- <0.23 <0.32 <0.44 <50 <50 700 <0.23 3.3 <0.34 0.46J 0.61J <0.21 

12MW-09S 1/13/2004 <0.41 23 <0.35 24 87 --- <0.28 <0.4 <0.55 <10 <10 220 <0.29 2.1 <0.43 <0.36 <0.31 <0.26 

12MW-09S 4/28/2004 <0.47 23 <0.54 26 83 --- <0.45 <0.55 <0.36 <5 <5 54 <0.44 3.7 <0.51 <0.52 <0.5 <0.39 

12MW-09S 8/16/2004 <0.53 20 <0.68 25 77 --- <0.58 <0.59 <0.8 <5 <5 87 <0.85 2.5 <0.61 <0.67 <0.49 <0.21 

12MW-09S 5/25/2005 <0.66 29 <0.85 30 99 --- <0.73 <0.74 <1 <25 <25 100 <1.1 2.1 <0.77 <0.84 0.94J 0.62J 

12MW-09S 1/31/2006 <0.52 27 <0.41 34 110 --- <0.51 <0.58 <0.45 <0.5 <0.5 72 <0.62 --- <0.4 <0.52 0.78J 0.65J 

12MW-09S 6/22/2006 <0.47 17 <0.53 25 76 --- <0.52 <0.51 <0.85 <0.4 <0.5 110 <0.76 1.8 <0.4 <0.43 <0.47 0.63J 

12MW-09S 9/12/2006 <0.47 15 <0.53 21 59 --- <0.52 <0.51 <0.85 <0.4 <0.5 49 1J --- <0.4 <0.43 0.6J 0.57J 

12MW-09S 5/22/2007 <0.3 9.03 <0.25 14.1 --- --- <0.3 <0.25 0.328J <2 <2 56.8 <2 1.4 <0.25 <0.25 <0.25 <0.5 

12MW-09S 11/28/2007 <0.3 5.84 <0.25 8.15 --- --- <0.3 <0.25 0.401J <2 <2 71.2 <2 1.7 <0.25 <0.25 <0.25 <0.5 

12MW-09S 2/12/2009 <0.325 2.52 <0.25 4.74 --- --- <0.3 <0.25 <0.3 <10 <10 17.2J <2 1.8 <0.45 <0.25 <0.25 <0.5 

12MW-10S 11/30/2000 19,000 7,000 <420 2,400 --- --- <370 <350 9,300 38 330 1,200 <360 14 3,300 <360 1,900 660J 

12MW-10S 2/28/2001 38,000 15,000 <390 5,100 --- --- <320 <460 5,500 97 240 1,400 <510 17 3,100 <260 1,100 480J 

12MW-10S 5/16/2001 17,000 5,000 <440 5,600 --- --- <430 <340 6,400 27 190 970 <420 14 3,500 <540 1,800 1,600 

12MW-10SR 5/16/2001 16,000 5,200 <700 5,800 --- --- <690 <550 6,700 28 200 1,100 <660 15 3,500 <860 1,700J 1,700 

12MW-10S 8/29/2001 19,000 6,600 <190 7,000 --- 6.1 <150 <190 9,200 23 130 510 <300 12 4,200 <220 3,500 1,800 

12MW-10SR 8/29/2001 18,000 5,900 <390 6,600 --- 4.8 <320 <460 8,300 35 160 610 <510 13 3,700 <260 2,400 1,700 

12MW-10S 12/5/2001 16,000 6,100 <300 12,000 --- 5.4 <240 <300 12,000 28 150 370 <470 13 4,400 <350 2,600 2,200 

12MW-10SR 12/5/2001 17,000 5,900 <300 11,000 --- 5.3 <240 <300 12,000 42 200 450 <470 11 4,100 <350 2,500 2,300 

12MW-10S 2/27/2002 16,000 5,400 <390 9,300 --- 8.2 <320 <460 7,300 31 210 790 <510 13 3,400 <260 1,600 1,400 

12MW-10SR 2/27/2002 16,000 5,400 <390 9,300 --- 7.5 <320 <460 7,300 28 190 810 <510 12 3,300 <260 1,600 1,400 

12MW-10S 6/11/2002 6,800 2,800 <140 4,900 <4,300 6 <190 <200 6,800 6.3J 140 470 <190 12 2,400 <150 1,200 1,600 

12MW-10S 9/10/2002 11,000 4,400 47 4,700 1,700 --- <4.8 <6 7,000 130 11 180 <9.4 13 3,400 <7 1,300 1,400 

12MW-10S 1/8/2003 17,000 7,700 79J 5,700 <1,800 4.3 <24 <30 3,500 160 36 31 <47 12 2,200 <35 900 760 

12MW-10S 4/10/2003 5,600 2,400 <170 4,800 <3,200 9.2 <150 <150 2,300 11 140 710 870 11 1,800 <170 710 470 

12MW-10S 7/16/2003 9,300 4,200 <270 9,700 <5,100 4.94 <230 <240 3,000 20 96 940 <340 15 3,400 <270 1,100 610 

12MW-10S 9/16/2003 3,600 1,800 <140 4,400 <2,600 1.33 <120 <120 2,100 4.2 44 810 <170 11 1,600 <130 550 480 

12MW-10S 1/14/2004 2,700 1,600 <27 4,300 <510 5.59 <23 <24 1,900 54 <10 1,200 <34 1,600 <27 580 460 

12MW-10S 4/27/2004 2,500 1,500 <140 3,600 <2,600 6.33 <120 <120 1,800 --- --- --- <170 9.8 1,500 <130 570 440 

12MW-10S 8/18/2004 3,100 2,100 27J 3,900 <130 5.35 <7.2 <8.8 --- <50 <50 1,100 <7 11 2,100 <8.4 730 630 

44 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-10SR 8/18/2004 2,910 2,090 26.5 3,310 529 --- 0.571J 1.59 2,520 --- --- --- 4.24J --- 2,150 1.04 689 422 

12MW-10S 2/2/2005 2,100 1,700 21J 4,700 330J 4.4 <8.7 <7.9 1,400 25J 100 1,300 <8 12 1,800 <7.6 470 330 

12MW-10S 5/24/2005 7,600 5,000 82J 13,000 <1,400 18 <87 <79 2,200 26 74 860 <80 20 4,400 <76 1,100 410 

12MW-10S 9/13/2005 5,200 4,700 <200 13,000 <8,700 --- <250 <290 2,200 <0.5 1.6 1,600 <310 --- 3,200 <260 980 410J 

12MW-10S 1/31/2006 1,900 1,800 <82 4,500 <3,500 --- <100 <120 1,000 2.9 14 300 <120 --- 1,700 <100 460 220J 

12MW-10S 6/21/2006 6,600 6,200 91J 17,000 1,200 --- <82 <81 2,300 140 230 710 <120 --- 4,300 <68 1,100 370 

12MW-10S 9/12/2006 1,700 2,100 <85 5,200 <2,600 --- <82 <81 920 1.4 6.5 460 <120 --- 1,300 <68 380 170J 

12MW-10S 5/22/2007 10,500 12,100 142J 33,400 <10,000 --- <150 <125 4,490 74.2 110 654 <1,000 21 8,530 <125 2,190 476J 

12MW-10S 7/16/2007 265 671 7.66 1,230 <20 --- <0.3 0.375J 480 3.27J 6.77J 84.8 <2 10 435 <0.25 174 45.1 

12MW-10S 11/27/2007 1,600 2,260 39.9 4,320 --- --- <6 <5 1,040 <20 649B <40 11 1,820 <5 447 217 

12MW-10S 5/6/2008 766 776 8.31J 1,190 --- --- <6 <5 433 10.1J 40 895 <40 7.7 379 <5 132 121 

12MW-10S 9/1/2009 100 200 2.3 310 75 --- 0.34J <1 320 <10 13 120 <1 9.9 370 0.34J 150 95 

12MW-11D 8/29/2000 <5 <5 <5 <5 --- --- <5 <5 <5 <2 <2 39 <5 2.6 <5 <5 <5 <2 

12MW-11D 11/29/2000 <0.18 <0.18 <0.21 <0.17 --- --- <0.18 <0.17 <0.17 <0.5 <0.5 39 <0.18 4.1 <0.21 <0.18 <0.17 <0.15 

12MW-11D 2/27/2001 <0.22 <0.23 <0.2 0.41J --- --- <0.16 <0.23 0.75J <0.5 6.9 42 <0.26 1.6J 2.3 <0.13 0.98 <0.17 

12MW-11D 5/15/2001 <0.27 <0.29 <0.35 <0.26 --- --- <0.35 <0.27 <0.31 <0.5 5.2 28 <0.33 2.8J <0.38 <0.43 <0.34 <0.19 

12MW-11D 8/28/2001 <0.22 <0.23 <0.2 0.24J --- --- <0.16 <0.23 <0.24 <0.5 6.6 26 <0.26 2.2J <0.13 <0.13 0.47 <0.17 

12MW-11D 12/4/2001 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 31 <0.26 3.2J <0.13 <0.13 <0.14 <0.17 

12MW-11D 2/27/2002 <0.22 <0.23 <0.2 <0.16 --- --- <0.16 <0.23 <0.24 <0.5 <0.5 22 <0.26 2.5 <0.13 <0.13 <0.14 <0.17 

12MW-11D 6/10/2002 <0.17 <0.64 <0.15 <0.13 <8.8 --- <0.12 <0.15 <0.28 <5 <5 35 <0.24 3.1 <0.1 <0.17 <0.13 <0.18 

12MW-11D 9/9/2002 <0.26 <0.24 <0.18 <0.33 <5.4 --- <0.24 <0.24 <0.2 <10 <10 65 <0.24 2.5 <0.16 <0.19 <0.17 <0.2 

12MW-11D 1/8/2003 <0.17 <0.64 <0.15 <0.13 <8.8 --- <0.12 <0.15 <0.28 <10 <10 40 <0.24 2.8 <0.1 <0.17 <0.13 <0.18 

12MW-11D 4/9/2003 <0.16 <0.11 <0.14 <0.17 <3.2 --- <0.11 <0.16 <0.22 <0.5 <0.5 12 <0.12 2.4 <0.17 <0.14 <0.12 <0.1 

12MW-11D 7/16/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <5 <5 83 <0.43 2.7 <0.31 <0.34 <0.25 <0.11 

12MW-11S 8/29/2000 <5 20 <5 130 --- --- <5 <5 <5 <2 <2 17 <5 6 <5 <5 7.6 <2 

12MW-11S 11/29/2000 0.34J 6.1 <0.21 65 --- --- <0.18 <0.17 0.37J <0.5 <0.5 19 <0.18 2.1J <0.21 <0.18 3.8 <0.15 

12MW-11SR 11/29/2000 0.57J 8.5 <0.21 74 --- --- <0.18 <0.17 0.68 <0.5 <0.5 14 <0.18 2.4J <0.21 <0.18 6.4 <0.15 

12MW-11S 2/27/2001 <0.87 9.3 <0.78 70 --- --- <0.65 <0.92 8.9 <0.5 <0.5 19 <1 1.4J 15 <0.52 16 <0.7 

12MW-11S 5/15/2001 <1.1 5.5 <1.4 41 --- --- <1.4 <1.1 <1.2 <0.5 <0.5 12 <1.3 2.2J <1.5 <1.7 2.6J <0.75 

12MW-11S 8/28/2001 1.1J 7 <0.78 80 --- <0.2 <0.65 <0.92 1.3J <0.5 <0.5 15 <1 1.4J <0.5 <0.52 38 <0.7 

12MW-11S 1/8/2003 <0.17 12 0.23J 71 <8.8 --- <0.12 <0.15 0.58J --- --- --- <0.24 --- <0.1 <0.17 1.4 <0.18 

12MW-11S 8/19/2004 <1.5 13 <1.7 110 <25 --- <1.4 <1.8 <1.2 --- --- --- <1.4 --- <1.6 <1.7 <1.6 <1.2 

12MW-11S 5/23/2005 <2.7 13 <3.4 89 <64 --- <2.9 <3 <4 --- --- --- <4.3 --- <3.1 <3.4 6.6J <1.1 

12MW-11S 6/20/2006 <0.94 8 <0.97 52 <39 --- <0.98 <1 <0.95 --- --- --- <1.8 --- <0.81 <0.96 3.1J <0.98 

12MW-11S 5/22/2007 <0.3 9.93 <0.25 55.5 --- --- <0.3 <0.25 1.16 <2 <2 37.6 <2 --- <0.25 <0.25 7.85 <0.5 

12MW-11S 4/14/2009 <0.325 8.64 <0.25 64.7 --- --- <0.3 <0.25 6.36 --- --- --- <2 --- 2.46 <0.25 85.4 <0.5 

12MW-11SR 4/14/2009 <0.65 7.3 <0.5 59.7 --- --- <0.6 <0.5 4.92 --- --- --- <4 --- 2.19 <0.5 68.3 <1 

12MW-11S 7/20/2009 1.4 5.9H 0.23JH 64 <5 --- <1.0H <1.0H 8.3 --- --- --- <1.0H --- 5.2 <0.5 89H 0.85 

12MW-12D 8/28/2001 <0.22 <0.23 <0.2 0.34J --- <0.2 <0.16 2 <0.24 <0.5 <0.5 8.5 <0.26 4.2 <0.13 0.41 2.3 <0.17 

12MW-12D 8/18/2004 <0.19 <0.2 <0.22 <0.18 <3.2 --- <0.18 <0.22 <0.15 --- --- --- <0.18 --- <0.2 <0.21 <0.2 <0.15 

12MW-12D 7/16/2007 <0.3 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.25 <0.25 <0.25 <0.5 

12MW-12S 8/28/2001 10 5.8 0.95 420 --- <0.2 <0.16 <0.23 29J <0.5 <0.5 20 <0.26 1.6J 15 0.22J 2,900 0.44J 

12MW-12S 12/4/2001 <8.7 <9.2 <7.8 680 --- <0.2 <6.5 <9.2 38 <0.5 <0.5 24 <10 2.4J 65 <5.2 2,400 <7 

12MW-12S 2/27/2002 <55 <58 <49 280 --- <0.2 <41 <58 <61 <0.5 <0.5 21 <64 1.3J <31 <32 1,800 <44 

12MW-12S 6/10/2002 <42 <160 <38 880 <2,200 <1 <30 <37 <70 <5 <5 33 <59 2.8 110 <44 2,400 <44 

12MW-12S 9/9/2002 <1.7 7.5J <1.5 400 <88 --- <1.2 <1.5 50 <10 <10 20 <2.4 2.2 100 <1.7 2,200 <1.8 

45 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-12S 1/8/2003 <1.7 <6.4 <1.5 170 <88 <1 <1.2 <1.5 18 <10 <10 13 <2.4 1J 8 <1.7 1,400 <1.8 

12MW-12S 4/10/2003 <6.6 4.7J <5.6 140 <130 --- <4.5 <6.4 9.2J <0.5 <0.5 13 <4.6 1.3J <6.9 <5.8 430 <4.1 

12MW-12S 7/16/2003 <6.6 <7.5 <8.5 99 <160 --- <7.3 <7.4 <10 <25 <25 63 <11 1.5J <7.7 <8.4 250 <2.7 

12MW-12S 9/15/2003 <6.6 <7.5 <8.5 68 <160 <0.07 <7.3 <7.4 <10 <0.5 <0.5 8.6 <11 <5 <7.7 <8.4 180 <2.7 

12MW-12S 1/13/2004 1.2 2.7 <0.28 48 <6.3 <0.07 <0.23 <0.32 4 <10 <10 <10 <0.23 --- 2.6 <0.29 120 <0.21 

12MW-12S 4/26/2004 <0.94 2.3J <1.1 33 <16 <0.07 <0.9 <1.1 3.3 --- --- --- <0.88 <5 1.4J <1 65 <0.77 

12MW-12S 8/17/2004 1.2 3.1 0.29J 58 <3.2 <0.067 <0.18 <0.22 4.2 <1.3 <1.3 21 <0.18 1.7 2.7 <0.21 93 0.24J 

12MW-12S 2/1/2005 <1.2 2.8J <0.73 60 <14 --- <0.87 <0.79 4.4 0.66J <0.5 14 1.5J <0.54 2J <0.76 80 <0.58 

12MW-12S 5/24/2005 2.7J 4.1J <3.4 86 <64 --- <2.9 <3 8.4J <25 <25 69J <4.3 5.7 4.6J <3.4 130 1.2J 

12MW-12S 9/12/2005 <2.6 3.1J <2 100 <87 --- <2.5 <2.9 7.2J <0.5 <0.5 18 <3.1 1.6J 2.7J <2.6 150 <2.5 

12MW-12S 1/30/2006 2.4J 3.5J <1.6 150 <70 --- <2 <2.3 14 <0.5 <0.5 8.9 4.3J --- 2.7J <2.1 400 <2 

12MW-12S 6/20/2006 <7.5 <7.7 <7.7 150 <310 --- <7.8 <8.2 19J <0.4 <0.5 17 16J 1.4J 7.6J <7.6 570 <7.8 

12MW-12S 9/11/2006 <7.5 <8.4 <8.5 300 <260 --- <8.2 <8.1 40J <0.4 <0.5 3.8 <12 --- 27 <6.8 960 <6.6 

12MW-12S 5/22/2007 2.82 2.89 0.492J 495 --- --- <0.3 <0.25 86 <2 <2 45.7 <2 1.2 84 0.364J 1,280 5.34 

12MW-12S 7/16/2007 2.61 2.86 0.387J 396 --- --- <0.3 <0.25 87.5 <2 <2 52.2 <2 1.5 95.8 0.477J 1,140 6.37 

12MW-12S 11/26/2007 <6 <6 <5 417 --- --- <6 <5 114 <2 <2 33.4B <40 1.4 103 <5 1,150 <10 

12MW-12S 5/6/2008 <6 <6 <5 518 --- --- <6 <5 160 <2 <2 54.1 <40 1.7 139 <5 1,480 <10 

12MW-12S 2/11/2009 <6.5 <6 <5 525 --- --- <6 <5 139 <10 <10 66 <40 1.2 130 <5 1290 <10 

12MW-12S 4/14/2009 <6.5 10.2J <5 657 --- --- <6 <5 114 --- --- --- <40 --- 122 <5 1190 <10 

12MW-12S 7/20/2009 2.6JH 20H <10H 540 <100H --- <10 <10H 210H <10 <10 69 <10H 1.4 150 <10H 1,100 13H 

12MW-13S 8/28/2001 <0.17 <0.64 <0.15 20 --- --- <0.12 <0.15 0.47J <0.5 <0.5 4 <0.24 2.2J <0.1 <0.17 16 <0.18 

12MW-13S 12/4/2001 <0.22 <0.23 <0.2 1 --- <0.2 1.7 <0.23 <0.24 <0.5 <0.5 <0.5 <0.26 5.6 0.35J <0.13 5.2 <0.17 

12MW-13S 2/26/2002 <0.22 <0.23 <0.2 1 --- <0.2 <0.16 <0.23 <0.24 <0.5 <0.5 2.9 <0.26 1.7J <0.13 <0.13 4.3 <0.17 

12MW-13S 6/11/2002 <0.17 <0.64 <0.15 0.82 <8.8 <1 <0.12 <0.15 <0.28 <5 <5 <5 <0.24 1.6J <0.1 <0.17 4 <0.18 

12MW-13S 9/10/2002 <0.26 <0.24 <0.18 3.5 <5.4 --- <0.24 <0.24 <0.2 <10 <10 <10 <0.24 1.2J <0.16 <0.19 3.9 <0.2 

12MW-13S 1/7/2003 <0.17 <0.64 <0.15 34 <8.8 <1 <0.12 <0.15 <0.28 <10 <10 <10 <0.24 1.5J <0.1 <0.17 21 <0.18 

12MW-13S 4/8/2003 <1.1 <1.2 <1.4 65 <26 <1 <1.2 <1.2 <1.6 <0.5 <0.5 1.7 <1.7 2 <1.2 <1.3 37 <0.42 

12MW-13SR 4/8/2003 <0.16 0.77 <0.14 52 <3.2 --- <0.11 <0.16 0.39J --- --- --- <0.12 --- <0.17 <0.14 31 <0.1 

12MW-13S 7/15/2003 <1.3 <1.5 <1.7 82 <32 --- <1.5 <1.5 <2 <0.5 <0.5 1.8 <2.1 0.88J <1.5 <1.7 33 <0.53 

12MW-13SR 7/15/2003 <1.3 <1.5 <1.7 76 <32 --- <1.5 <1.5 <2 --- --- --- <2.1 --- <1.5 <1.7 31 <0.53 

12MW-13S 9/15/2003 <1.3 <1.5 <1.7 83 <32 <0.07 <1.5 <1.5 <2 <0.5 <0.5 1.1 <2.1 <5 <1.5 <1.7 26 <0.53 

12MW-13SR 9/15/2003 <1.3 <1.5 <1.7 82 <32 --- <1.5 <1.5 <2 --- --- --- <2.1 --- <1.5 <1.7 25 <0.53 

12MW-13S 1/13/2004 <0.27 <1.2 <0.34 41 <26 0.043J <0.29 <0.3 <0.4 <10 <10 <10 <0.43 7.6 <0.31 <0.34 20 <0.11 

12MW-13SR 1/13/2004 <1.1 <1.2 <1.4 47 <26 --- <1.2 <1.2 <1.6 --- --- --- <1.7 --- <1.2 <1.3 21 <0.42 

12MW-13S 4/28/2004 <0.27 0.77J <0.34 60 <6.4 <0.07 <0.29 <0.3 <0.4 <0.5 <0.5 3.5 <0.43 <5 <0.31 <0.34 14 <0.11 

12MW-13SR 4/28/2004 <1.5 <1.6 <1.7 57 <25 --- <1.4 <1.8 <1.2 --- --- --- <1.4 --- <1.6 <1.7 15 <1.2 

12MW-13S 8/17/2004 0.23J 0.82 <0.22 54 <3.2 <0.067 <0.18 <0.22 0.27J <0.5 <0.5 4.1 <0.18 0.8J <0.2 <0.21 15 0.23J 

12MW-13SR 8/17/2004 <0.38 0.91J <0.43 55 <6.3 --- <0.36 <0.44 <0.29 --- --- --- <0.35 --- <0.41 <0.42 15 <0.31 

12MW-13S 2/2/2005 <1.5 <1 <0.91 62 <17 --- <1.1 <0.99 <1.2 <0.5 <0.5 2.6 1.3J <0.54 <1 <0.95 14 <0.73 

12MW-13SR 2/2/2005 <1.5 1.1J <0.91 61 <17 --- <1.1 <0.99 <1.2 --- --- --- 1.7J --- <1 <0.95 14 <0.73 

12MW-13S 5/24/2005 <1.5 1.3J <0.91 95 <17 0.063JM <1.1 <0.99 <1.2 <0.5 <0.5 2.4 <1 4.2J <1 <0.95 43 <0.73 

12MW-13SR 5/24/2005 <1.5 1.2J <0.91 92 <17 --- <1.1 <0.99 <1.2 <0.5 <0.5 2.4 <1 2.5 <1 <0.95 42 <0.73 

12MW-13S 9/12/2005 <2.1 <1.7 <1.6 110 <70 --- <2 <2.3 <1.8 <0.5 <0.5 <0.5 <2.5 --- <1.6 <2.1 30 <2 

12MW-13SR 9/12/2005 <2.1 <1.7 <1.6 120 <70 --- <2 <2.3 <1.8 <0.5 <0.5 0.72J <2.5 --- <1.6 <2.1 33 <2 

12MW-13S 1/30/2006 <2.1 <1.7 <1.6 120 <70 --- <2 <2.3 <1.8 <0.5 <0.5 1.2J 3.4J <1.6 <2.1 30 <2 

12MW-13SR 1/30/2006 <2.1 <1.7 <1.6 130 <70 --- <2 <2.3 <1.8 <0.5 <0.5 0.88J 3.4J --- <1.6 <2.1 32 <2 

46 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-13S 6/22/2006 <1.5 <1.7 <1.7 82 <53 --- <1.6 <1.6 23 <0.4 <0.5 10 <2.4 1.1J <1.3 <1.4 42 <1.3 

12MW-13SR 6/22/2006 <1.5 <1.7 <1.7 87 <53 --- <1.6 <1.6 19 <0.4 <0.5 8.8 <2.4 --- <1.3 <1.4 39 <1.3 

12MW-13S 9/11/2006 <1.5 <1.7 <1.7 64 <53 --- <1.6 <1.6 14 <0.4 <0.5 1.2 <2.4 --- <1.3 <1.4 29 <1.3 

12MW-13SR 9/11/2006 <1.5 <1.7 <1.7 61 <53 --- <1.6 <1.6 13 <0.4 <0.5 2.3 <2.4 --- <1.3 <1.4 28 <1.3 

12MW-13S 5/21/2007 <0.3 0.559J <0.25 44 --- --- <0.3 <0.25 3.05 <2 <2 6.46J <2 0.73J <0.25 <0.25 16.4 <0.5 

12MW-13SR 5/21/2007 <0.3 0.489J <0.25 45.4 --- --- <0.3 <0.25 2.57 <2 <2 <6 <2 --- <0.25 <0.25 16.3 <0.5 

12MW-13S 7/16/2007 <0.3 0.436J <0.25 28.4 --- --- <0.3 <0.25 0.892J <2 <2 <6 <2 1.2 <0.25 <0.25 9.96 <0.5 

12MW-13SR 7/16/2007 <0.3 0.440J <0.25 28.2 --- --- <0.3 <0.25 0.782J <2 <2 11.5J <2 --- <0.25 <0.25 9.69 <0.5 

12MW-13S 8/22/2007 <0.3 0.416J <0.25 23.8 --- --- <0.3 <0.25 1.01 --- --- --- <2 2.4 <0.25 <0.25 10.7 <0.5 

12MW-13S 11/27/2007 <0.3 <0.3 <0.25 22.4 --- --- <0.3 <0.25 <0.3 <2 <2 41.6B <2 1.2 <0.25 <0.25 5.17 <0.5 

12MW-13SR 11/27/2007 <0.3 <0.3 <0.25 21.2 --- --- <0.3 <0.25 <0.3 <2 <2 28.0B <2 1.2 <0.25 <0.25 5.16 <0.5 

12MW-13S 5/5/2008 <0.3 0.520J <0.25 35.8 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.25 <0.25 4.84 <0.5 

12MW-13S 8/14/2008 <0.3 <0.3 <0.25 10.8 --- --- <0.3 <0.25 <0.3 <10 <10 <10 <2 1.1 <0.25 <0.25 3.57 <0.5 

12MW-13SR 8/14/2008 <0.3 <0.3 <0.25 16.4 --- --- <0.3 <0.25 <0.3 <10.0 <10 <10 <2 --- <0.250 <0.250 5.34 <0.500 

12MW-13S 2/11/2009 <0.325 <0.3 <0.25 16.1 --- --- <0.3 <0.25 <0.3 <10 <10 64.2 <2 0.96J <0.45 <0.25 3.3 <0.5 

12MW-13SR 2/11/2009 <0.325 <0.3 <0.25 16 --- --- <0.3 <0.25 <0.3 <10 <10 20.0J <2 --- <0.45 <0.25 3.04 <0.5 

12MW-13S 7/20/2009 <0.5 0.45JH <0.50H 37 <5.0H --- 0.85 <0.50H 0.10JH <10 <10 <10 <0.50H 1.3 <0.5 <0.50H 4.2 0.32J 

12MW-13SR 7/20/2009 <0.50H 1.2 <0.5 36 <5 --- <0.5 <0.5 <0.50H <10 <10 <10 <0.50H 1.5 <0.5 <0.50H 1.8H 0.36J 

12MW-13S 9/1/2009 <0.5 0.48J <0.5 31 <5 --- <0.5 <0.5 <0.5 <10 <10 22 <0.5 2.1 <0.5 <0.5 2.8 0.21J 

12MW-13SR 9/1/2009 0.030J 0.46J <0.5 30 <5 --- <0.5 <0.5 0.12J <10 <10 14 <0.5 3.1 <0.5 <0.5 2.8 0.21J 

12MW-14S 8/30/2001 <0.17 <0.64 <0.15 <0.13 --- --- <0.12 <0.15 <0.28 11 <0.5 1.4J <0.24 2.6J <0.1 <0.17 <0.13 <0.18 

12MW-17S 9/10/2002 2.1 0.98 <0.18 240 <5.4 --- <0.24 <0.24 29J <10 <10 19 <0.24 1.6J 110 0.32J 690 0.91 

12MW-17S 1/7/2003 <0.84 <3.2 <0.76 350 <44 <1 <0.6 <0.75 31 <10 <10 46 <1.2 2.1 100 <0.87 720 <0.88 

12MW-17S 4/9/2003 <6.6 <4.2 <5.6 160 <130 --- <4.5 <6.4 16J <0.5 <0.5 45 <4.6 3 32 <5.8 320 <4.1 

12MW-17S 7/15/2003 <11 <12 <14 170 <260 --- <12 <12 <16 <5 <5 73 <17 1.9 35J <13 420 <4.2 

12MW-17S 9/15/2003 <11 <12 <14 160 <260 <0.07 <12 <12 <16 <5 <5 26 <17 <5 30J <13 370 <4.2 

12MW-17S 1/13/2004 <11 <12 <0.68 190 <13 <0.07 <0.58 <0.59 24 <10 <10 35 <0.85 49 <0.67 420 <4.2 

12MW-17S 4/26/2004 3.1 1.9 <0.43 280 <6.3 <0.07 <0.36 <0.44 30 <5 <5 39 <0.35 <5 72 <0.42 690 1.3 

12MW-17S 8/17/2004 0.44J 0.51J <0.43 70 <6.3 <0.067 <0.36 <0.44 7.1 <5 <5 41 <0.35 1.7 12 <0.42 230 <0.31 

12MW-17S 2/1/2005 <5.8 <4.2 <3.6 150 <70 0.11 <4.4 <4 16J 2.4J <1 23 <4 <5 33 <3.8 360 <2.9 

12MW-17S 5/24/2005 <11 <12 <14 190 <260 --- <12 <12 27J <25 <25 90 <17 3.2 46 <13 460 <4.2 

12MW-17S 9/12/2005 <8.3 <7 <6.5 170 <280 --- <8.1 <9.2 23J <0.5 <0.5 29 <9.9 1.8 38 <8.2 390 <7.9 

12MW-17S 1/31/2006 <12 <8.4 <7.3 220 <140 --- <8.7 <7.9 31J <0.5 <0.5 23 <8 --- 54 <7.6 450 <5.8 

12MW-17S 6/20/2006 <1.9 <1.9 <1.9 41 <77 --- <2 <2.1 6.3J <0.4 <0.5 21 <3.6 1.7 9 <1.9 110 <2 

12MW-17S 9/11/2006 <1.9 <2.1 <2.1 64 <66 --- <2.1 <2 10J <0.4 <0.5 12 <3 --- 13 <1.7 160 <1.7 

12MW-17S 5/22/2007 <0.3 0.718J <0.25 68.3 --- --- <0.3 <0.25 9.07 <2 <2 39.9 <2 1.4 9.19 <0.25 136 <0.5 

12MW-17S 11/26/2007 <0.6 1.67J <0.5 125 --- --- <0.6 <0.5 11.1 <2 <2 25.6B <4 1.6 9.45 <0.5 194 <1 

12MW-17S 5/6/2008 <0.3 2.82 0.380J 107 --- --- <0.3 <0.25 17 <2 <2 36.9 <2 1.8 13.1 <0.25 212 0.668J 

12MW-17S 2/11/2009 <0.65 1.85J <0.5 103 --- --- <0.6 <0.5 12.3 <10 <10 53.7 <4 1.4 11.9 <0.5 177 <1 

12MW-17S 7/20/2009 2.7 1.4H <1 45H <10 --- <1.0H <1.0H 9.6H <10 <10 27 <1.0H 1.4 16 <1.0H 180 <1.0H 

12MW-18S 4/9/2003 <13 86 <17 550 <320 --- <15 <15 <20 <0.5 <0.5 130 <21 9.4 <15 <17 <12 <5.3 

12MW-18S 7/16/2003 <13 64 <17 500 <320 --- <15 <15 <20 <25 <25 62 <21 3.9 <15 <17 <12 <5.3 

12MW-18S 9/17/2003 <13 54 <17 490 <320 --- <15 <15 <20 <5 <5 600 <21 4.1 <15 <17 <12 <5.3 

12MW-18S 1/14/2004 <11 87 <14 440 <260 --- <12 <12 <16 <10 <10 150 <17 3.9 <12 <13 <9.9 <4.2 

12MW-18S 4/27/2004 <6.6 84 <8.5 230 <160 --- <7.3 <7.4 <10 <20 <20 190 <11 7.6 <7.7 <8.4 7.7J <2.7 

12MW-18S 8/19/2004 <4.7 75 <5.4 240 <79 --- <4.5 <5.5 4.4J <50 <50 510 <4.4 8.8 <5.1 <5.2 22 <3.9 

47 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-18S 2/3/2005 <7.3 47 <4.6 380 <87 --- <5.5 <5 9.1J --- --- --- 7.4J --- <5.2 <4.8 16J <3.6 

12MW-18S 5/23/2005 <11 71 <14 450 <260 --- <12 <12 <16 --- --- --- <17 --- <12 <13 25J 4.7J 

12MW-18S 9/12/2005 <8.3 76 <6.5 390 <280 --- <8.1 <9.2 9.8J --- --- --- <9.9 --- <6.4 <8.2 18J <7.9 

12MW-18S 1/31/2006 <12 89 <7.3 300 <140 --- <8.7 <7.9 <9.4 --- --- --- <8 --- <8.4 <7.6 19J <5.8 

12MW-18S 6/20/2006 <4.7 84 <5.3 230 <160 --- <5.2 <5.1 <8.5 --- --- --- <7.6 --- <4 <4.3 15J 4.4J 

12MW-18S 9/11/2006 <3.7 72 <3.9 250 <150 --- <3.9 <4.1 6.2J --- --- --- <7.2 --- <3.2 <3.8 15J 4.5J 

12MW-18S 5/22/2007 <0.3 63.2 0.559J 235 --- --- <0.3 <0.25 8.59 --- --- --- <2 --- <0.25 <0.25 12.4 2.07 

12MW-18S 7/16/2007 <0.3 59.8 0.517J 153 --- --- <0.3 <0.25 7.83 --- --- --- <2 --- <0.25 <0.25 13.9 2.3 

12MW-18S 11/26/2007 0.609J 44 <0.5 161 --- --- <0.6 <0.5 8.83 <40 --- 2,620B <4 3.6 <0.5 <0.5 16 <1 

12MW-18S 5/5/2008 <1.5 48.8 <1.25 305 --- --- <1.5 <1.25 15.6 <2 <2 3,430 <10 3.4 <1.25 <1.25 33.2 <2.5 

12MW-18S 2/10/2009 <1.63 35 <1.25 778 --- --- <1.5 <1.25 25.6 --- --- --- <10 --- 2.37J <1.25 103 7.01 

12MW-18S 7/20/2009 14 34 <5.0H 540H <50H --- <5.0H <5 34H <10 <10 2,600 <5.0H 3.7 2.2JH <5 110H 17 

12MW-19D 4/8/2003 <11 <12 <14 <16 <260 --- <12 <12 <16 3.2 7.4 72 <17 980 <12 <13 <9.9 <4.2 

12MW-19D 7/14/2003 <13 <8.4 <11 <14 <250 --- <9 <13 <18 2.8 4.5 1,100 <9.2 670 <14 <12 <9.8 <8.2 

12MW-19D 9/17/2003 <6.6 <4.2 <5.6 <6.8 <130 --- <4.5 <6.4 <8.8 <5 <5 2,600 <4.6 510 <6.9 <5.8 <4.9 <4.1 

12MW-19D 1/14/2004 <2.1 <2.4 <2.7 <3.3 <51 --- 2.6J <2.4 <3.2 <10 <10 3,900 <3.4 --- <2.4 <2.7 <2 <0.85 

12MW-19D 4/27/2004 <0.19 <0.2 <0.22 <0.18 <3.2 --- 2.4 <0.22 <0.15 <200 <200 5,200 0.24J 220 <0.2 1.1 <0.2 <0.15 

12MW-19D 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- 2.5 <0.3 <0.4 <500 <500 5,100 <0.43 100 <0.31 20 <0.25 <0.11 

12MW-19S 4/8/2003 <13 <15 <17 <21 <320 --- <15 <15 <20 1.9 4.9 130 <21 930 <15 <17 <12 <5.3 

12MW-19S 7/14/2003 <13 22J <11 <14 <250 --- <9 <13 <18 <250 <250 2,900 <9.2 650 <14 <12 <9.8 <8.2 

12MW-19S 9/17/2003 <18 <17 <16 <21 <270 --- <18 <17 <17 <5 6 2,900 <19 670 <14 <19 <17 <14 

12MW-19S 1/14/2004 <0.82 8.3 <0.7 <0.86 <16 --- 1.3J <0.8 <1.1 <10 <10 2,300 1J 360 <0.86 <0.72 <0.61 <0.52 

12MW-19S 4/27/2004 <0.94 7.1 <1.1 <0.91 <16 --- 1.3J <1.1 <0.73 <200 <200 4,200 1.2J 270 <1 <1 <1 <0.77 

12MW-19S 8/19/2004 <0.94 4.5 <1.1 <0.91 <16 --- 1.7J <1.1 <0.73 <500 <500 3,300 <0.88 150 <1 <1 <1 <0.77 

12MW-19S 2/2/2005 <1.5 5.3 <0.91 <0.85 30J --- 1.3J <0.99 <1.2 <250 <250 6,600 1.4J 67 <1 <0.95 <1.4 <0.73 

12MW-19S 5/25/2005 <0.29 5.7 0.43J <0.17 30 --- 1.3 <0.2 <0.23 2.3 5.1 6,600 <0.2 61 <0.21 <0.19 <0.28 <0.15 

12MW-19S 9/13/2005 <0.29 1.7 <0.18 <0.17 9.3J --- 1.3 <0.2 <0.23 <0.5 <0.5 3,200 <0.2 31 <0.21 <0.19 <0.28 <0.15 

12MW-19S 1/31/2006 <0.21 0.53J <0.16 <0.2 <7 --- 1.3 <0.23 <0.18 55 0.52J 4,300 <0.25 --- <0.16 <0.21 <0.19 <0.2 

12MW-19S 9/12/2006 <0.19 4.7 0.26J <0.15 17J --- 2 <0.21 <0.19 <0.4 0.91J 3,300 <0.36 --- <0.16 <0.19 <0.3 <0.2 

12MW-20D 4/8/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <0.5 <0.5 4.5 <0.43 2 <0.31 <0.34 <0.25 <0.11 

12MW-20D 7/15/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <5 <5 35 <0.43 1.8 <0.31 <0.34 <0.25 <0.11 

12MW-20D 9/16/2003 <0.16 <0.11 <0.14 <0.17 <3.2 --- <0.11 <0.16 <0.22 <0.5 <0.5 14 <0.12 1.9 <0.17 <0.14 <0.12 <0.1 

12MW-20D 1/12/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <10 <10 65 <0.43 2.3 <0.31 <0.34 <0.25 <0.11 

12MW-20D 4/26/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <5 <5 250 <0.43 4.7 <0.31 <0.34 <0.25 <0.11 

12MW-20D 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <50 <50 400 <0.43 2.9 <0.31 <0.34 <0.25 <0.11 

12MW-20D 5/25/2005 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <250 <250 3,800 <0.43 2.1 <0.31 0.63J <0.25 <0.11 

12MW-20D 6/21/2006 <0.19 <0.19 <0.19 0.15J <7.7 --- <0.2 <0.21 <0.19 <0.4 <0.5 1,100 <0.36 2.2 <0.16 <0.19 <0.3 <0.2 

12MW-20D 2/12/2009 <0.325 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 <10 <10 3,910 <2 2.2 <0.45 <0.25 <0.25 <0.5 

12MW-20S 4/9/2003 <13 67 <17 410 <320 --- <15 <15 <20 <0.5 <0.5 59 <21 3 <15 <17 <12 <5.3 

12MW-20S 7/16/2003 <5.3 35 <6.8 220 <130 --- <5.8 <5.9 <8 1.1 2.3 230 <8.5 260 <6.1 <6.7 <4.9 <2.1 

12MW-20S 9/16/2003 <2.7 17 <3.4 110 <64 --- <2.9 <3 <4 <5 5.3 5,100 <4.3 500 <3.1 <3.4 <2.5 <1.1 

12MW-20S 1/14/2004 <0.66 7.0 <0.85 43 26J --- 3.1 <0.74 <1 <10 <10 7,800 <1.1 310 <0.77 <0.84 <0.62 <0.27 

12MW-20S 4/26/2004 <1.1 2.7J <1.4 38 33J --- 3J <1.2 <1.6 <200 <200 3,300 <1.7 92 <1.2 46 <0.99 <0.42 

12MW-20S 8/19/2004 <0.75 0.88J <0.86 13 31J --- 3.6 <0.88 <0.58 <500 <500 6,900 <0.7 38 <0.82 51 <0.8 <0.62 

12MW-20S 2/2/2005 <0.29 1.5 0.45J 14 23 --- 3.3 <0.2 0.34J <250 <250 8,200 <0.2 7.2 <0.21 2.1 0.37J 0.22J 

12MW-20S 5/25/2005 <0.29 0.57J <0.18 6.9 6.8J --- 5 <0.2 <0.23 <500 <500 7,200 <0.2 6.2 <0.21 2.2 <0.28 <0.15 

48 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-20S 9/13/2005 <0.29 1.2 <0.18 12 11J --- 3.7 <0.2 <0.23 0.86J <0.5 5,400 <0.2 6.4 <0.21 0.8 <0.28 <0.15 

12MW-20S 1/31/2006 <0.42 3.1 <0.33 26 19J --- 3.1 <0.46 0.61J <500 <500 12,000 <0.49 --- <0.32 0.61J 0.42J <0.39 

12MW-20S 6/22/2006 <0.19 0.76 <0.21 6.5 <6.6 --- 2.6 <0.2 <0.34 <0.4 <0.5 3,100 <0.3 6.2 <0.16 0.42J <0.19 <0.17 

12MW-20S 9/11/2006 <0.19 1.3 <0.21 12 10J --- 3 <0.2 <0.34 <0.4 <0.5 8,900 <0.3 --- <0.16 0.46J <0.19 <0.17 

12MW-20S 5/23/2007 <0.3 0.498J <0.25 4.1 --- --- 1.92 <0.25 <0.3 2.34J <2 14,100 <2 4.5 <0.25 <0.25 <0.25 <0.5 

12MW-20S 11/28/2007 <0.3 0.317J <0.25 2.95 --- --- 2.62 <0.25 <0.3 <40 <40 9,610 <2 4.1 <0.25 <0.25 <0.25 <0.5 

12MW-20S 2/12/2009 <0.325 <0.3 <0.25 1.33 --- --- 1.95 <0.25 <0.3 <10 <10 13,700 <2 4.5 <0.45 <0.25 <0.25 <0.5 

12MW-21D 4/7/2003 <1.1 3.4J <1.4 <1.6 <26 --- 2.1J <1.2 2.3J 4.2 7.7 2,400 <1.7 850 <1.2 <1.3 <0.99 <0.42 

12MW-21D 7/15/2003 <0.82 1.1J <0.7 <0.86 <16 --- 2.3 <0.8 1.4J <500 <500 1,900 <0.58 440 <0.86 <0.72 <0.61 <0.52 

12MW-21D 9/16/2003 <0.82 <0.53 <0.7 <0.86 <16 --- 1.9J <0.8 <1.1 <5 <5 3,900 <0.58 360 <0.86 <0.72 <0.61 <0.52 

12MW-21D 1/12/2004 <0.82 <0.53 <0.7 <0.86 <16 --- 1.8J <0.8 <1.1 <10 <10 15,000 <0.58 240 <0.86 <0.72 <0.61 <0.52 

12MW-21D 4/27/2004 <1.3 <1.5 <1.7 <2.1 <32 318 1.8J <1.5 <2 <500 <500 5,000 <2.1 130 <1.5 <1.7 <1.2 <0.53 

12MW-21D 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- 1.8 <0.3 <0.4 <500 <500 4,200 <0.43 97 <0.31 <0.34 <0.25 <0.11 

12MW-21S 4/8/2003 <1.3 21 <1.7 <2.1 <32 456.9 <1.5 <1.5 2.9J 110 18 110 <2.1 440 <1.5 <1.7 <1.2 <0.53 

12MW-21SR 4/8/2003 --- --- --- --- --- 455.4 --- --- --- 96 23 95 --- 460 --- --- --- ---

12MW-21S 7/15/2003 <5.3 25 <6.8 <8.2 <130 117 <5.8 <5.9 <8 39 13 160 <8.5 430 <6.1 <6.7 <4.9 <2.1 

12MW-21SR 7/15/2003 --- --- --- --- --- --- --- --- --- 41 19 <250 --- --- --- --- --- ---

12MW-21S 9/15/2003 <5.3 17J <6.8 <8.2 <130 321 <5.8 <5.9 <8 15 6.9 1,400 <8.5 430 <6.1 <6.7 <4.9 <2.1 

12MW-21SR 9/15/2003 --- --- --- --- --- --- --- --- --- 11 6.3 1,100 --- --- --- --- --- ---

12MW-21S 1/13/2004 <1.3 47 <1.7 <2.1 <32 316 <1.5 <1.5 11 13 10 2,000 <2.1 370 <1.5 <1.7 <1.2 <0.53 

12MW-21SR 1/13/2004 --- --- --- --- --- --- --- --- --- 16 13 4,100 --- 360 --- --- --- ---

12MW-21S 4/27/2004 <0.94 56 2J <0.91 <16 390 1.5J <1.1 6.3 40 15 1,400 <0.88 340 <1 <1 <1 <0.77 

12MW-21SR 4/27/2004 --- --- --- --- --- --- --- --- --- 43 17 2,000 --- --- --- --- --- ---

12MW-21S 8/19/2004 <1.9 55 3J <1.8 <32 288M 2.4J <2.2 2.2J <130 <130 1,900 <1.8 100 <2 <2.1 <2 <1.5 

12MW-21SR 8/19/2004 <5.3 46 <6.8 <8.2 <130 --- <5.8 <5.9 <8 <130 <130 1,900 <8.5 --- <6.1 <6.7 <4.9 <2.1 

12MW-21S 2/1/2005 <2.9 21 <1.8 <1.7 <35 70 <2.2 <2 <2.3 <25 31J 2,000 <2 250 <2.1 <1.9 <2.8 <1.5 

12MW-21SR 2/1/2005 --- --- --- --- --- --- --- --- --- 25J 33J 2,000 --- --- --- --- --- ---

12MW-21S 5/24/2005 <12 24J <7.3 7.2J <140 279 <8.7 <7.9 <9.4 11 8.9 2,200 <8 310 <8.4 <7.6 <11 <5.8 

12MW-21S 9/13/2005 <12 20J <7.3 <6.8 <140 --- <8.7 <7.9 <9.4 <0.5 <0.5 43 <8 <8.4 <7.6 <11 <5.8 

12MW-21S 1/31/2006 <0.83 12 1.8J <0.82 43J --- 1.8J <0.92 <0.72 2.7 2.1 1,500J 1.7J --- <0.64 <0.82 <0.74 <0.79 

12MW-21S 6/22/2006 <0.19 13 1.5 <0.15 <7.7 --- 2.2 <0.21 <0.19 6.3 7.4 730 <0.36 --- <0.16 <0.19 <0.3 <0.2 

12MW-21S 9/11/2006 <1.9 20 <2.1 <1.4 <66 --- 2.5J <2 <3.4 0.81J <0.5 640 <3 --- <1.6 <1.7 <1.9 <1.7 

12MW-22D 4/9/2003 <0.16 3.1 <0.14 8 <3.2 388.9 0.41J <0.16 29 1.5 3.4 1,800 0.44 190 <0.17 0.2J 0.21J 0.55 

12MW-22D 7/14/2003 <0.41 2.2 <0.35 3.1 <7.9 106 0.93J <0.4 9.6 5.2 8.6 1,900 0.67J 320 <0.43 0.55J <0.31 0.58J 

12MW-22D 9/17/2003 <0.41 0.96 <0.35 1.8 <7.9 311 0.86J <0.4 6.6 <5 <5 5,700 <0.29 250 <0.43 100 <0.31 <0.26 

12MW-22D 1/12/2004 <2.7 <3 <3.4 <4.1 <64 103 <2.9 <3 5.5J <10 <10 16,000 <4.3 <3.1 140 <2.5 <1.1 

12MW-22D 4/28/2004 <2.4 <2.5 <2.7 <2.3 <40 94.1 <2.3 <2.8 3.9J <250 <250 4,400 <2.2 47 <2.6 130 <2.5 <1.9 

12MW-22D 8/17/2004 <0.94 <0.98 <1.1 1.2J <16 --- 0.99J <1.1 3.4 --- --- --- <0.88 --- <1 58 <1 <0.77 

12MW-22D 5/25/2005 <1.2 <0.84 <0.73 <0.68 <14 51.4 1.4J <0.79 1.3J <500 <500 6,600 <0.8 80 <0.84 43 <1.1 <0.58 

12MW-22D 6/21/2006 <0.19 <0.19 <0.19 <0.15 <7.7 --- 1.3 <0.21 0.33J <0.4 <0.5 5,500 <0.36 --- <0.16 1.2 <0.3 0.84 

12MW-22D 5/22/2007 <0.3 <0.3 <0.25 <0.3 --- --- 1.06 <0.25 <0.3 <2 <2 27,000 <2 --- <0.25 0.429J <0.25 1.58 

12MW-22D 11/28/2007 <0.3 <0.3 <0.25 <0.3 --- --- 0.773J <0.25 <0.3 <100 <100 20,100 <2 --- <0.25 0.300J <0.25 0.852J 

12MW-22D 9/1/2009 <0.5 <0.5 <0.5 <0.5 <5 --- 1.7 <0.5 <0.5 --- --- --- <0.5 --- <0.5 <0.5 <0.5 0.39J 

12MW-22S 4/10/2003 1,100 <300 <340 6,100 <6,400 4.7 <290 <300 1,200J 1.4 1.4 40 1,800 4 790J <340 15,000 <110 

12MW-22S 7/17/2003 650 200J <170 2,100 <3,200 23.7 <150 <150 5,400 <5 11 400 <210 57 <150 <170 2,500 <53 

12MW-22S 9/15/2003 <82 100J <70 1,300 <1,600 77.3 <57 <80 4,600 1.2 3.2 92 <58 100 <86 <72 420 <52 

49 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-22S 1/14/2004 43 33 <6.8 550 <130 235 <5.8 <5.9 2,100 <10 <10 2,400 <8.5 <6.1 <6.7 13J <2.1 

12MW-22S 4/28/2004 11J 19 <4.2 630 <80 208 <3.6 <3.7 1,500 <500 <500 3,600 <5.3 100 <3.8 <4.2 63 4.5J 

12MW-22S 8/17/2004 <24 27J <27 1,000 <400 29.5 <23 <28 1,600 <500 <500 5,000 <22 20 <26 <26 <25 <19 

12MW-22S 2/3/2005 <37 <26 <23 980 <440 0.604 <27 <25 1,200 <250 <250 4,400 38J 8.1 <26 <24 <36 <18 

12MW-22S 5/24/2005 4.4J 21 1.8J 820 <35 0.616M <2.2 <2 860 <250 <250 5,000 <2 11 <2.1 <1.9 58 5.7 

12MW-22S 9/13/2005 <8.3 11J <6.5 440 <280 --- <8.1 <9.2 460 <0.5 <0.5 7.1 17J <6.4 <8.2 <7.4 61 

12MW-22S 1/31/2006 <17 23J <13 630 <560 --- <16 <18 480 250J <250 4,500 <20 --- <13 <16 170 280 

12MW-22S 6/20/2006 <7.5 11J <7.7 390 <310 --- <7.8 <8.2 210 0.75J <0.5 7,700 19J --- <6.5 <7.6 82 170 

12MW-22S 9/11/2006 <7.5 11J <7.7 450 <310 --- <7.8 <8.2 200 <0.4 <0.5 2,700 <14 --- <6.5 <7.6 89 130 

12MW-22S 5/22/2007 <0.3 11.9 1.01 293 --- --- 1.38 <0.25 147 <2 <2 16,300 <2 --- 1.72 0.252J 54.1 211 

12MW-22S 7/17/2007 <1.5 9.63 <1.25 265 --- --- 1.85J <1.25 121 <2 <2 18,100 <10 --- 1.65J <1.25 60 138 

12MW-22S 11/27/2007 <0.6 5.4 <0.5 158 --- --- 1.17J <0.5 56.4 <200 <200 11,300B <4 5.3 1.24J <0.5 39.6 105 

12MW-22S 5/6/2008 <0.6 7.57 <0.5 102 --- --- 1.59J <0.5 44.1 <2 <2 21,600 <4 5.2 2.44 <0.5 42.3 180 

12MW-22S 2/11/2009 <0.65 4.56 <0.5 96.3 --- --- 1.72J <0.5 16.4 <10 <10 11,700 <4 4.1 2.15 <0.5 39.1 47.6 

12MW-22S 9/1/2009 <0.5 4.4 0.72 100 39 --- 1.9 <0.5 15 <10 <10 8,800 <0.5 3.9 1.3 0.34J 39 47 

12MW-23D 4/8/2003 <0.16 <0.11 <0.14 0.72 <3.2 --- <0.11 <0.16 <0.22 <0.5 <0.5 9.6 <0.12 1.9 <0.17 <0.14 0.58 <0.1 

12MW-23D 7/14/2003 <0.16 <0.11 <0.14 0.4J <3.2 --- <0.11 <0.16 <0.22 <10 <10 120 <0.12 1.7 <0.17 <0.14 0.35J <0.1 

12MW-23D 9/17/2003 <0.16 <0.11 <0.14 0.22J <3.2 --- <0.11 <0.16 <0.22 <5 <5 120 <0.12 <0.54 <0.17 0.26J 0.24J <0.1 

12MW-23D 1/12/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <10 <10 2,700 <0.43 2.2 <0.31 <0.34 <0.25 <0.11 

12MW-23D 4/27/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <50 <50 680 <0.43 3.2 <0.31 <0.34 <0.25 <0.11 

12MW-23D 8/18/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <200 <200 3,200 <0.43 2.8 <0.31 <0.34 <0.25 <0.11 

12MW-23D 5/25/2005 <0.29 0.4J <0.18 <0.17 <3.5 --- <0.22 <0.2 <0.23 <100 <100 1,700 <0.2 1.4J <0.21 <0.19 <0.28 0.49J 

12MW-23D 6/21/2006 <0.19 0.73J <0.21 <0.14 <6.6 --- <0.21 <0.2 <0.34 <0.4 <0.5 1,700 <0.3 2 <0.16 <0.17 <0.19 1.8 

12MW-23S 4/9/2003 <110 <120 <140 2,200 <2,600 <1 <120 <120 370J 1.1 2 65 740 2.8 <120 <130 4,200 <42 

12MW-23S 7/16/2003 <110 <120 <140 2,100 <2,600 <0.07 <120 <120 450J 1.2 2.7 99 <170 <5 <120 <130 4,100 <42 

12MW-23S 9/17/2003 <53 <60 <68 1,000 <1,300 <0.07 <58 <59 280 <5 5.2 110 <85 <5 <61 <67 1,900 <21 

12MW-23S 1/14/2004 <2.1 13 <2.7 390 <51 0.07 <2.3 <2.4 150 <10 <10 31 <3.4 --- 14 <2.7 790 <0.85 

12MW-23S 4/27/2004 <2.4 16 <2.7 450 <40 <0.07 <2.3 <2.8 150 <5 <5 89 <2.2 <5 19 <2.6 770 <1.9 

12MW-23S 8/17/2004 <15 16J <17 480 <250 0.072J <14 <18 160 <20 <20 170 38J 1.8 21J <17 760 <12 

12MW-23S 2/1/2005 97 99 <15 690 <280 --- <17 <16 150 <5 <5 89 <16 --- 38J <15 690 <12 

12MW-23S 2/3/2005 --- --- --- --- --- 0.154 --- --- --- --- --- --- --- <5 --- --- --- ---

12MW-23S 5/25/2005 290 420 <15 1,600 <280 0.068JM <17 <16 260 <10 <10 240 <16 30 100 <15 1,100 13J 

12MW-23S 9/12/2005 77 240 <16 950 <700 --- <20 <23 200 <0.5 <0.5 6.9 <25 --- 50J <21 660 <20 

12MW-23S 1/30/2006 260 520 <16 1,900 <700 --- <20 <23 360 0.54J <0.5 570 30J --- 180 <21 890 23J 

12MW-23S 6/21/2006 230 700 <27 2,100 <820 --- <26 <25 490 0.57J <0.5 720 <38 --- 190 <21 830 34J 

12MW-23S 9/12/2006 99J 500 <39 1,800 <1,500 --- <39 <41 400 <0.4 <0.5 650 <72 --- 100J <38 670 39J 

12MW-23S 5/21/2007 148H 956H 13 3,200H --- --- <0.3 1.33 703H 2.49J <2 3,010 <2 --- 222H 0.748J 972H 61.1 

12MW-23S 7/16/2007 151 1,220 14.9 3,240 --- --- <0.3 1.47 737 2.91J 3.53J 4,190 <2 --- 221 0.900J 1,050 75.1 

12MW-23S 11/27/2007 112 1,010 <12.5 3,180 --- --- <15 <12.5 602 <100 <100 2,650B <100 2.1 263 <12.5 914 98.8 

12MW-23S 5/6/2008 232 1,680 19.7J 4,080 --- --- <15 <12.5 1,030 4.71J 2.25J 5,500 <100 2.5 458 <12.5 1,160 109 

12MW-23S 2/11/2009 57.9 876 <6.25 2,490 --- --- <7.5 <6.25 557 <10 <10 3,080 <50 1.9 201 <6.25 582 101 

12MW-23S 7/20/2009 70H 1,100 <50H 3,300H <500H --- 85 <50 810 <10 <10 1,500 <50H 1.8 290H <50 720H 140H 

12MW-23SR 7/20/2009 110 1,100 <10 3,200H <250H --- <25H <25H 850H <10 <10 1,500 <25H 2.5 290H <10 760 200 

12MW-24D 4/7/2003 <1.3 <1.5 <1.7 <2.1 <32 --- <1.5 <1.5 <2 2.1 4.6 7,700 <2.1 420 <1.5 <1.7 <1.2 <0.53 

12MW-24D 7/16/2003 <1.3 <1.5 <1.7 <2.1 <32 --- 1.6J <1.5 <2 0.96 2 1,600 <2.1 260 <1.5 <1.7 <1.2 <0.53 

12MW-24D 9/16/2003 <0.66 <0.75 <0.85 <1 <16 --- 1.3J <0.74 <1 <5 <5 7,500 <1.1 160 <0.77 <0.84 <0.62 <0.27 

50 
 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-24D 1/12/2004 <0.16 <0.11 <0.14 0.29J <3.2 --- 1.6 <0.16 <0.22 <10 <10 14,000 0.25J 280 <0.17 0.53 0.18J <0.1 

12MW-24D 4/27/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- 1.8 <0.3 <0.4 <500 <500 4,900 <0.43 120 <0.31 6 <0.25 <0.11 

12MW-24D 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- 2 <0.3 <0.4 <500 <500 5,800 <0.43 180 <0.31 21 <0.25 <0.11 

12MW-24S 4/7/2003 <2.7 <3 <3.4 28 <64 --- <2.9 <3 120 2 5.3 3,500 <4.3 450 <3.1 <3.4 52 <1.1 

12MW-24S 7/16/2003 <1.3 <1.5 <1.7 17 <32 --- 1.9J <1.5 75 <500 <500 1,400 <2.1 310 <1.5 <1.7 69 1.4J 

12MW-24S 9/16/2003 <0.82 <0.53 <0.7 10 <16 --- 2.5 <0.8 47 <5 5.8 4,600 <0.58 370 <0.86 <0.72 37 1.5J 

12MW-24S 1/13/2004 <0.82 <0.53 <0.7 22 <16 --- 2.7 <0.8 38 <10 <10 11,000 <0.58 85 <0.86 1J 6.1 1.8 

12MW-24S 4/27/2004 <0.94 <0.98 <1.1 5.7 <16 --- 2.8J <1.1 54 <5 <5 4,300 <0.88 52 <1 1.1J 1.5J <0.77 

12MW-24S 8/18/2004 <1.3 <1.5 <1.7 5.8J <32 --- 2.7J <1.5 58 <500 <500 8,700 <2.1 32 <1.5 <1.7 <1.2 <0.53 

12MW-24S 2/1/2005 <1.5 <1 <0.91 5.7 <17 --- 2.5J <0.99 60 <250 <250 8,700 <1 27 <1 <0.95 <1.4 1.2J 

12MW-24S 5/25/2005 <1.5 1.4J <0.91 2.8J 30J --- 2.6J <0.99 40 <500 <500 7,100 <1 29 <1 <0.95 <1.4 11 

12MW-24S 9/12/2005 <0.42 13 1.4 1.3J 58 --- 2.3 <0.46 18 1.7 7.5 6,000 0.53J 13 <0.32 0.48J <0.37 17 

12MW-24S 1/30/2006 <0.42 2.1 1.1J 0.68J 56 --- 1.7 <0.46 7.8 <250 <250 7,800 0.61J --- <0.32 <0.41 <0.37 12 

12MW-24S 6/21/2006 <0.19 0.97 1.6 0.32J 72 --- 2 <0.2 5.1 0.52J 0.91J 8,900 <0.3 15 <0.16 0.47J <0.19 14 

12MW-24S 9/11/2006 <0.19 0.36J 0.71J 0.31J 33 --- 2 <0.2 4.2 2.3 0.65J 5,800 <0.3 --- <0.16 0.48J <0.19 8.7 

12MW-25D 4/8/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <0.5 <0.5 22 <0.43 1.7J <0.31 <0.34 0.46J <0.11 

12MW-25D 7/15/2003 <0.27 <0.3 <0.34 1.1J <6.4 --- <0.29 <0.3 <0.4 <10 <10 180 <0.43 11 <0.31 <0.34 0.76J <0.11 

12MW-25D 9/16/2003 <0.16 0.18J <0.14 1.3 <3.2 --- 0.13J <0.16 0.35J <5 <5 920 <0.12 57 <0.17 <0.14 0.83 <0.1 

12MW-25D 1/12/2004 <0.27 <0.3 <0.34 1.1J <6.4 --- <0.29 <0.3 0.59J <10 <10 2,900 <0.43 87 <0.31 <0.34 <0.25 <0.11 

12MW-25D 4/28/2004 <0.19 0.44J <0.22 1.6 <3.2 --- 0.51J <0.22 0.33J <500 <500 4,900 0.55J 200 <0.2 0.45J 0.51J <0.15 

12MW-25D 8/16/2004 <0.27 <0.3 <0.34 1J <6.4 --- <0.29 <0.3 0.48J <500 <500 6,000 <0.43 <0.31 2.6 <0.25 <0.11 

12MW-25D 5/23/2005 <0.29 <0.21 <0.18 1.3 <3.5 --- 0.64J <0.2 0.33J <250 <250 6,300 0.24J 100 <0.21 58 0.29J 0.29J 

12MW-25D 6/21/2006 <0.19 <0.19 <0.19 0.26J <7.7 --- 0.62J <0.21 0.31J <0.4 <0.5 5,900 <0.36 7 <0.16 0.61J <0.3 0.54J 

12MW-25S 4/9/2003 <1.3 <1.5 <1.7 25 <32 <1 <1.5 <1.5 24 <0.5 <0.5 21 <2.1 1.2J <1.5 <1.7 63 <0.53 

12MW-25S 7/15/2003 <1.3 <1.5 <1.7 43 <32 <0.07 <1.5 <1.5 36 <5 <5 30 <2.1 <5 <1.5 <1.7 100 0.56J 

12MW-25S 9/17/2003 <1.3 <1.5 <1.7 33 <32 4.72 <1.5 <1.5 48 <10 <10 180 <2.1 <5 <1.5 <1.7 58 <0.53 

12MW-25S 1/13/2004 <0.82 0.73J <0.7 25 <16 15.6 <0.57 <0.8 64 <10 <10 1,700 <0.58 <0.86 11 13 <0.52 

12MW-25S 4/27/2004 <1.3 <1.5 <1.7 23 <32 11.5 <1.5 <1.5 67 <10 <10 3,500 <2.1 15 <1.5 37 5.6 <0.53 

12MW-25S 8/18/2004 <0.94 <0.98 <1.1 23 <16 <0.067 <0.9 <1.1 69 <500 <500 6,500 <0.88 13 <1 41 6.5 <0.77 

12MW-25S 2/1/2005 <1.5 <1 <0.91 25 <17 --- <1.1 <0.99 83 <250 <250 6,400 <1 6.8 <1 34 1.4J 1.1J 

12MW-25S 5/23/2005 <2.7 <3 <3.4 20 <64 --- <2.9 <3 87 <250 <250 4,700 <4.3 9.9 <3.1 15 4.6J 1.2J 

12MW-25S 9/12/2005 <2.1 <1.7 <1.6 16 <70 --- <2 <2.3 78 <0.5 <0.5 6,100 <2.5 5.7 <1.6 3.9J 2.4J 9.7 

12MW-25S 1/30/2006 <2.1 <1.7 <1.6 11 <70 --- <2 <2.3 62 <250 <250 6,800 4J --- <1.6 2.2J <1.9 28 

12MW-25S 6/21/2006 <0.94 <1 <1.1 9 <33 --- <1 <1 53 <0.4 <0.5 5,100 <1.5 6.3 <0.81 2J 1.8J 39 

12MW-25S 9/11/2006 <0.94 <1 <1.1 6 <33 --- <1 <1 41 <0.4 <0.5 4,300 <1.5 --- <0.81 2.2J 2J 51 

12MW-25S 5/21/2007 <0.3 <0.3 <0.25 0.645J --- --- 1.3 <0.25 10.2 <2 <2 17,900 <2 4.1 <0.25 3.04 0.926J 71.6 

12MW-25S 7/16/2007 <0.3 <0.3 <0.25 <0.3 --- --- 1.2 <0.25 5.97 <2 <2 22,700 <2 4.4 <0.25 2.16 0.479J 68.4 

12MW-25S 11/27/2007 <0.3 <0.3 <0.25 <0.3 --- --- 0.877J <0.25 3.3 <200 <200 11,500B <2 4.1 <0.25 1.91 0.336J 78.8 

12MW-25S 5/6/2008 <0.3 <0.3 <0.25 <0.3 --- --- 1.25 <0.25 2.24 <2 <2 22,600 <2 4 <0.25 2.39 <0.25 54.4 

12MW-25S 2/11/2009 <0.325 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 1.26 <10 <10 9,980 <2 2.9 <0.45 2.16 <0.25 56.1 

12MW-25S 9/1/2009 <0.5 0.12J <0.5 <0.5 <5 --- 1.7 <0.5 1.1 <10 <10 4,900 <0.5 2.5 <0.5 2.7 <0.5 59 

12MW-26S 4/8/2003 <0.16 4.6 0.6 150 <3.2 <1 <0.11 <0.16 0.35J <0.5 <0.5 79 <0.12 3.1 <0.17 <0.14 0.25J 0.41 

12MW-26S 7/16/2003 <0.66 4.3 <0.85 140 <16 25 <0.73 <0.74 <1 <130 <130 930 <1.1 51 <0.77 31 <0.62 0.45J 

12MW-26S 9/17/2003 <3.3 <3.7 <4.2 140 <80 --- <3.6 <3.7 <5 <5 <5 140 <5.3 --- <3.8 42 <3.1 <1.3 

12MW-26S 1/13/2004 <3.3 7J <4.2 230 <80 2.83 <3.6 <3.7 12J <10 <10 3,700 <5.3 --- <3.8 13J 32 <1.3 

12MW-26S 4/27/2004 47 46 <6.8 900 <130 --- <5.8 <5.9 62 <100 <100 1,200 <8.5 --- 18J <6.7 590 <2.1 

51 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-26S 8/18/2004 780 390 <6.8 2,600 <130 1.1M <5.8 <5.9 160 <250 <250 3,500 <8.5 2.8 320 <6.7 1,000 9.8 

12MW-26S 2/2/2005 2,300 1,700 <46 7,000 <870 --- <55 <50 440 <25 <25 1,300 <50 --- 1,100 <48 1,600 73J 

12MW-26S 5/25/2005 2,500 2,200 <91 7,300 <1,700 --- <110 <99 650 --- --- --- <100 --- 1,500 <95 1,700 130J 

12MW-26S 9/28/2005 1,600 2,000 <82 5,800 <3,500 --- <100 <120 810 --- --- --- <120 --- 1,300 <100 1,200 140J 

12MW-26S 1/31/2006 2,100 3,800 75 8,400 2,000 --- <17 <16 1,500 --- --- --- 29J --- 2,100 <15 2,000 280 

12MW-26S 7/5/2006 1,300 2,700 <97 5,900 <3,900 --- <98 <100 1,300 --- --- --- <180 --- 1,600 <96 1,500 180J 

12MW-26S 9/12/2006 380 930 <42 1,900 <1,300 --- <41 <40 510 --- --- <61 --- 420 <34 520 130 

12MW-26S 5/21/2007 1,500H 4,420H 66.8 9,980H 3,330 --- <0.3 3.86 2,940H 16.6J 25.5 1,950 <2 2.6 3,270H 1.49 3,440H 234H 

12MW-26S 7/16/2007 1,270 4,560 42.3 8,820 <20 --- 0.367J 2.43 2,840 11.1J 17.5J 7,250 <2 3.8 2,700 1.14 4,410 284 

12MW-26S 8/22/2007 1,080 3,710 46.7J 6,910 <2,000 --- <30 <25 2,390 <100 <100 13,000 <200 3.8 3,230 <25 3,940 281 

12MW-26SR 8/22/2007 1,480 5,370 72.0J 9,580 <2,000 --- <30 <25 3,470 <100 <100 13,200 <200 4.2 4,290 <25 5,280 379 

12MW-26S 11/26/2007 761 2,720 <25 5,890 --- --- <30 <25 1,830 <200 <200 4,260B <200 3.7 2,250 <25 3,230 216 

12MW-26SR 11/26/2007 991 3,370 <25 7,520 --- --- <30 <25 2,240 <100 <100 4,890B <200 3.8 2,670 <25 3,920 278 

12MW-26S 5/6/2008 107 540 6.19J 1,160 --- --- <6 <5 315 7.99J 12.5J 4,890 <40 2.6 567 <5 597 141 

12MW-26S 8/14/2008 803 3,030 52.8 7500 --- --- .314J 3.65 2,420 <200 <200 6,760 <2 3 2,890 9.89 4,490 177J 

12MW-26S 2/11/2009 655 3,920 55 8,730 --- --- <6 <5 2,700 19.1J 26.7 2,300 <40 3.3 3,840 <5 4,690 381 

12MW-26S 7/20/2009 370H 3,000 <50 6,900H 1,000 --- <50H <50H 2,300 <10 16 710 <50H 2.5 3,200 <50H 3,700 700 

12MW-26S 9/1/2009 520 4,200 55 10,000 2,800 --- <25 <25 3,100 <10 17 1,200 <25 4 4,100 <25 5,200 510 

12MW-27D 4/8/2003 <0.16 0.15J <0.14 0.49J <3.2 --- <0.11 <0.16 <0.22 <0.5 <0.5 8.2 <0.12 3.7 <0.17 <0.14 0.28J <0.1 

12MW-27D 7/15/2003 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <5 <5 22 <0.43 2 <0.31 <0.34 <0.25 <0.11 

12MW-27D 9/16/2003 <0.23 <0.22 <0.2 <0.26 <3.4 --- <0.23 <0.21 <0.22 <0.5 <0.5 11 <0.24 --- <0.18 <0.23 <0.22 <0.18 

12MW-27D 1/12/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 <10 <10 <10 <0.43 2.5 <0.31 <0.34 <0.25 <0.11 

12MW-27D 4/28/2004 <0.19 <0.2 <0.22 <0.18 <3.2 --- <0.18 <0.22 <0.15 <1 <1 16 <0.18 3.9 <0.2 <0.21 <0.2 <0.15 

12MW-27D 8/18/2004 <0.19 <0.2 <0.22 <0.18 <3.2 --- <0.18 <0.22 <0.15 9.6 <1.3 71 <0.18 4.3 <0.2 <0.21 <0.2 <0.15 

12MW-27D 5/23/2005 <0.29 <0.21 <0.18 <0.17 <3.5 --- <0.22 <0.2 <0.23 <130 <130 3,700 <0.2 5.9 <0.21 <0.19 <0.28 <0.15 

12MW-27D 6/21/2006 <0.19 <0.21 <0.21 0.18J <6.6 --- <0.21 <0.2 <0.34 <0.4 <0.5 4,100 <0.3 3.5 <0.16 <0.17 <0.19 0.2J 

12MW-27S 4/9/2003 <1.3 110 <1.7 290 53J --- <1.5 <1.5 8.8 <0.5 <0.5 110 <2.1 2.4 <1.5 <1.7 18 4.6 

12MW-27S 7/16/2003 <6.6 94 <8.5 400 <160 --- <7.3 <7.4 16J <25 <25 190 <11 3.3 <7.7 <8.4 45 5.8J 

12MW-27S 9/16/2003 <5.7 74 <5 380 <85 --- <5.6 <5.3 <5.4 <5 <5 180 <5.9 3.3 <4.5 <5.9 42 <4.4 

12MW-27S 1/14/2004 <0.41 100 1.2 340 56 --- <0.28 <0.4 11 <10 <10 110 <0.29 2.6 <0.43 <0.36 25 4.5 

12MW-27S 4/27/2004 <0.47 98 1.1J 380 55 --- <0.45 <0.55 14 <5 <5 140 <0.44 3.2 <0.51 <0.52 36 3.1 

12MW-27S 8/18/2004 <0.66 120 1.3J 500 65 --- <0.73 <0.74 14 <50 <50 610 <1.1 3.7 <0.77 <0.84 36 6.1 

12MW-27S 2/3/2005 <7.3 65 <4.6 330 <87 --- <5.5 <5 13J --- --- --- <5 --- <5.2 <4.8 34 3.8J 

12MW-27S 5/23/2005 <7.3 61 <4.6 380 <87 --- <5.5 <5 16J <50 <50 1,100 <5 5 <5.2 12J 34 5.4J 

12MW-27S 9/13/2005 <4.2 40 <3.3 240 <140 --- <4 <4.6 15 <0.5 <0.5 750 6.6J 3.8 <3.2 <4.1 25 <3.9 

12MW-27S 1/31/2006 <5.2 53 <4.1 200 <170 --- <5.1 <5.8 13J <0.5 <0.5 1,000 <6.2 --- <4 <5.2 17 <4.9 

12MW-27S 6/21/2006 <3.7 50 <4.2 200 <130 --- <4.1 <4 16J <0.4 <0.5 470 <6.1 5.1 <3.2 <3.4 18 4.3J 

12MW-27S 9/12/2006 <3.7 54 <3.9 240 <150 --- <3.9 <4.1 18 <0.4 <0.5 530 <7.2 --- <3.2 <3.8 22 5.5J 

12MW-27S 5/23/2007 <0.3 31.6 0.684J 395 --- --- <0.3 <0.25 22 <2 <2 2120 <2 2.9 0.28J <0.25 40.7 4 

12MW-27S 7/17/2007 <3 32.8 <2.5 512 --- --- <3 <2.5 30 <2 <2 2,570 <20 3.7 <2.5 <2.5 71.3 6.12J 

12MW-27S 11/27/2007 <3 10.1 <2.5 447 --- --- <3 <2.5 19 <20 <20 1,510B <20 3.5 <2.5 <2.5 78.8 <5 

12MW-27S 5/5/2008 0.624J 24.7 2.03 761 --- --- <0.3 0.268J 38 <2 <2 1,930 <2 3.61 1.99 <0.25 165 5.76 

12MW-27S 2/10/2009 <3.3 18 <2.5 860 --- --- <3 <2.5 32 <10 <10 1,690 <20 3.69 <4.5 <2.5 145 21.8 

12MW-27S 7/20/2009 <10H 44 <10H 1,000 110 --- <10 <10H 30H <10 <10 360 24 3.4 30 <10 170 63 

12MW-28D 4/8/2003 <0.16 1.7 <0.14 4.2 <3.2 --- <0.11 <0.16 2.3 <0.5 <0.5 9.1 <0.12 1.7J 3.1 <0.14 7.6 <0.1 

12MW-28D 7/15/2003 <0.66 7.5 <0.85 14 <16 --- <0.73 <0.74 9.7 <1 <1 13 <1.1 1.1J 10 <0.84 26 0.59J 

52 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-28D 9/17/2003 <0.16 6.1 <0.14 12 <3.2 --- <0.11 <0.16 12 <5 <5 92 <0.12 2 6.7 <0.14 16 0.65 

12MW-28D 1/12/2004 <0.27 8.6 <0.34 2.7 <6.4 --- <0.29 <0.3 20 <10 <10 430 <0.43 13 0.58J <0.34 2.9 23 

12MW-28D 4/26/2004 <0.66 5.7 <0.85 <1 <16 --- <0.73 <0.74 <1 <2.5 <2.5 1,100 <1.1 7.2 <0.77 <0.84 <0.62 40 

12MW-28D 8/17/2004 <0.75 8.5 <0.86 <0.73 <13 --- <0.72 <0.88 <0.58 <500 <500 3,800 0.76J 3 <0.82 <0.84 <0.8 43 

12MW-28D 5/25/2005 <1.2 6.9 <0.73 <0.68 <14 0.076 <0.87 <0.79 <0.94 <250 <250 5,700 <0.8 44 <0.84 <0.76 <1.1 55 

12MW-28D 6/22/2006 <0.94 3.4J <0.97 <0.76 <39 --- <0.98 <1 <0.95 <0.4 0.5J 3,800 <1.8 --- <0.81 <0.96 <1.5 59 

12MW-28D 5/22/2007 <0.3 1.64 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 <2 <2 15,500 <2 --- <0.25 0.496J <0.25 41.6 

12MW-28D 7/16/2007 <0.3 1.2 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.25 0.309J <0.25 21.7 

12MW-28D 11/28/2007 <0.3 0.93J <0.25 <0.3 --- --- <0.3 <0.25 <0.3 <40 <40 5910 <2 --- <0.25 0.272J <0.25 24.8 

12MW-28D 2/11/2009 <0.32 0.63J <0.25 <0.3 --- --- <0.3 <0.25 <0.3 <10 <10 4,770 <2 1.8 <0.45 <0.25 <0.25 17.5 

12MW-28S 4/9/2003 3,700 1,300J <680 20,000 <13,000 <1 <580 <590 5,300 3.6 6.7 63 <850 5.2 5,300 <670 17,000 350J 

12MW-28SR 4/9/2003 3,100 1,100J <680 18,000 <13,000 --- <580 <590 4,800 3.6 6.5 77 <850 4.7 4,900 <670 16,000 290J 

12MW-28S 7/17/2003 3,300 1,300 <280 15,000 <6,300 0.087 <230 <320 4,500 12 15 1,100 <230 <5 5,600 <290 15,000 <210 

12MW-28SR 7/17/2003 3,200 1,200 <280 14,000 <6,300 --- <230 <320 4,400 12 15 1,200 <230 --- 5,200 <290 14,000 <210 

12MW-28S 9/15/2003 3,900 1,600 <280 16,000 <6,300 0.077 <230 <320 5,300 6.6 6.5 520 <230 <5 5,600 <290 15,000 <210 

12MW-28SR 9/15/2003 3,900 1,600 <280 16,000 <6,300 --- <230 <320 5,600 7.1 6.7 310 <230 --- 5,500 <290 15,000 <210 

12MW-28S 1/14/2004 3,200 1,400 <34 12,000 <640 0.084 <29 <30 5,400 12 <10 280 <43 --- 5,100 <34 12,000 280 

12MW-28SR 1/14/2004 3,000 1,500 <340 11,000 <6,400 --- <290 <300 5,100 <10 <10 280 <430 --- 4,700 <340 12,000 <110 

12MW-28S 4/28/2004 3,100 1,600 <42 11,000 <800 <0.07 <36 <37 5,300 <25 <25 310 <53 <5 5,500 <42 12,000 290 

12MW-28SR 4/28/2004 2,800 1,500 <340 10,000 <6,400 --- <290 <300 4,700 <25 <25 340 <430 --- 5,200 <340 12,000 300J 

12MW-28S 8/17/2004 3,000 1,700 <27 14,000 <400 <0.067 <23 <28 5,300 <25 <25 370 <22 2.5 5,200 <26 12,000 380 

12MW-28SR 8/17/2004 3,100 2,000 <220 14,000 <3,200 --- <180 <220 5,100 <25 <25 360 <180 --- 5,500 <210 13,000 360J 

12MW-28S 2/2/2005 2,990 2,090 20 10,400 200 0.111 <1 <25 4,410 16J 19J 310 <25 <5 4,750 12.2 13,000 <200 

12MW-28SR 2/2/2005 3,400 2,200 <230 13,000 <4,400 --- <270 <250 5,500 17J 18J 330 690J --- 7,400 <240 14,000 420J 

12MW-28S 5/24/2005 4,800 3,500 <420 15,000 <8,000 <0.07M <360 <370 6,000 16 7J 310 <530 7.5 7,900 <420 16,000 440J 

12MW-28SR 5/24/2005 4,600 3,400 <420 15,000 <8,000 0.053JM <360 <370 5,900 17 6.2J 310 <530 8.6 7,800 <420 16,000 410J 

12MW-28S 9/13/2005 3,800 3,300 31J 17,000 <440 --- <27 <25 5,200 19 10 410 <25 --- 7,200 <24 16,000 340 

12MW-28SR 9/13/2005 3,600 3,100 <230 16,000 <4,400 --- <270 <250 4,900 <0.5 <0.5 1.5 <250 --- 6,800 <240 15,000 380J 

12MW-28S 1/31/2006 3,500 3,900 39J 15,000 <440 --- <27 <25 5,300 16 5.7 490 41J --- 8,600 <24 16,000 330 

12MW-28SR 1/31/2006 3,600 4,000 <230 15,000 <4,400 --- <270 <250 5,300 16 5.8 540 <250 --- 8,500 <240 16,000 400J 

12MW-28S 6/20/2006 4,100 5,100 <240 20,000 140 --- <250 <260 4,800 25 7.9 720 520J 3.8 8,600 <240 17,000 430J 

12MW-28SR 6/20/2006 4,200 5,100 <240 20,000 160 --- <250 <260 4,800 28 9 570 570J 3.4 8,500 <240 18,000 420J 

12MW-28S 9/12/2006 3,800 5,900 <240 20,000 <9,600 --- <250 <260 4,000 9.6 3.4 610 <450 --- 5,900 <240 12,000 370J 

12MW-28SR 9/12/2006 4,100 6,300 <270 19,000 <8,200 --- <260 <250 4,100 7.4 2.4 720 <380 --- 6,300 <210 14,000 380J 

12MW-28S 5/22/2007 2,620 6,720 69.8 18,800 35.1J --- <0.3 7.31 2,690 34.2 4.23J 3,340 <2 1.8 2,890 0.765J 6,890 281 

12MW-28SR 5/22/2007 2,730 6,890 70.5 19,600 37.1J --- <0.3 7.66 2,750 33.9 4.15J 3,520 <2 1.8 3,030 0.789J 7,080 297 

12MW-28S 7/17/2007 2,520 6,480 <62.5 15,100 --- --- <75 <62.5 2,820 22.5J 4.87J 3,530 <500 --- 3,350 <62.5 7,570 193J 

12MW-28S 11/27/2007 1,530 4,100 <50 11,200 --- --- <60 <50 1,810 <40 <40 2,290B <400 2.6 1,920 <50 4,890 <100 

12MW-28S 5/6/2008 653 3,190 32.9J 5,980 --- --- <15 <12.5 1,710 12.3J <2 4,680 <100 2.6 <12.5 <12.5 5,000 77.6 

12MW-28SR 5/6/2008 569 2,890 31.4 5,360 --- --- <0.3 4.41 1,520 12.1J <2 4,800 <2 2.5 1,110 0.825J 3,800 58.4J 

12MW-28S 2/11/2009 196 1,350 <25 , --- --- <30 <25 1,130 <10 <10 3,130 <200 3 606 <25 3,030 <50 

12MW-28SR 2/11/2009 203 1,350 <25 2,890 --- --- <30 <25 1,170 <10 <10 2,420 <200 3.1 631 <25 3,080 <50 

12MW-28S 7/20/2009 150H 1,300 <100H 3,800H <500 --- <50 <100H 1,300 <10 <10 1,400 <100H 3 780H <100H 4,300 200H 

12MW-29S 8/17/2004 19J <9.8 <11 570 <160 <0.067 <9 <11 150 <5 <5 54 <8.8 1.3 24J <10 4,400 12J 

12MW-29SR 8/17/2004 <130 <150 <170 560J <3,200 <0.067 <150 <150 <200 <5 <5 60 <210 1.3 <150 <170 4,900 <53 

12MW-29SR 8/17/2004 4.35 3.93 0.755J 429 <25 --- <0.33 <0.36 134 --- --- --- 4.20J --- 17.3 0.409J 3,900 2.6 

53 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 3. Concentrations of organic compounds measured in groundwater and surface water at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, 

August 2000 to September 2009 (continued). 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 12DCA, 1-2-dichloroethane; 11DCE, 1,1-dichloroethene; CF, chloroform; cDCE, cis-1,2-dichloroethene; Meth, methane; MC, methylene chloride; 

TOC, total organic carbon; PCE, tetrachloroethene;TCE, trichloroethene; VC, vinyl chloride; <, less than; ---, data not measured; J, estimated; R, replicate sample; all concentrations are in micrograms per liter 

except for acetate and total organic carbon, which are in milligrams per liter; M, poor recovery in laboratory quality-control samples; B, analyte was detected in the associated laboratory blank; H, analyte holding 

time was exceeded] 

Site identification Sample date 111TCA 11DCA 12DCA 11DCE 1,4-

Dioxane Acetate Benzene CF c DCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 

12MW-29S 2/2/2005 36J 8.9J <7.3 1,900 <140 --- <8.7 <7.9 260 <2 <2 40 130J <0.54 170 <7.6 5,800 12J 

12MW-29S 5/24/2005 <150 <100 <91 2,200 <1,700 --- <110 <99 460 <2.5 <2.5 43 <100 1.8 600 <95 5,300 <73 

12MW-29SR 5/24/2005 <150 <100 <91 2,300 <1,700 --- <110 <99 480 <2.5 <2.5 43 <100 5.2 620 <95 5,500 <73 

12MW-29S 9/13/2005 24J <10 <9.1 1,700 <170 --- <11 <9.9 720 <0.5 <0.5 60 <10 1.8 790 <9.5 4,700 44 

12MW-29SR 9/13/2005 <100 <87 <82 1,600 <3,500 --- <100 <120 640 <0.5 <0.5 24 200J 1.8 660 <100 4,500 <99 

12MW-29S 1/31/2006 <150 <100 <91 1,200 <1,700 --- <110 <99 660 <0.5 <0.5 33 <100 --- 740 <95 3,700 <73 

12MW-29SR 1/31/2006 <0.29 <0.21 <0.18 1,200 <3.5 --- <0.22 <0.2 540 <0.5 <0.5 27 <0.2 --- 690 <0.19 3,300 <0.15 

12MW-29S 6/20/2006 <47 <48 <48 1,100 <1,900 --- <49 <52 590 <0.4 <0.5 60J 120J 2 380 <48 3,000 <49 

12MW-29SR 6/20/2006 <19 <19 <19 1,100 <770 --- <20 <21 620 <0.4 <0.5 40 <36 1.2J 440 <19 3,100 41J 

12MW-29S 9/11/2006 <47 <48 <48 1,200 <1,900 --- <49 <52 520 <0.4 6.4 41 <90 --- 250 <48 2,800 <49 

12MW-29SR 9/11/2006 <47 <48 <48 1,100 <1,900 --- <49 <52 510 <0.4 <0.5 34 <90 --- 220 <48 2,700 <49 

12MW-29S 5/22/2007 <12 27.7J <10 1220 --- --- <12 <10 226 <2 <2 64.5 <80 1.1 110 <10 1,950 <20 

12MW-29SR 5/22/2007 2.17 27.4 2.27 1,230 --- --- <0.3 0.565J 221 <2 <2 65.7 <2 1.2 97.1 0.544J 1,980 10.6 

12MW-29S 7/17/2007 <7.5 32.1 <6.25 1,280 --- --- <7.5 <6.25 233 <2 <2 77.2 <50 1.8 131 <6.25 2,200 <12.5 

12MW-29S 11/27/2007 <7.5 21.5J <6.25 960 --- --- <7.5 <6.25 121 <2 <2 34.6B <50 1.3 68.9 <6.25 1,320 <12.5 

12MW-29S 5/6/2008 <3 21.3 <2.5 563 --- --- <3 <2.5 112 <2 <2 71.6 <20 1.8 32.1 <2.5 898 <5 

12MW-29S 2/11/2009 <1.63 23.4 1.97J 852 --- --- <1.5 <1.25 50.7 <10 <10 275 <10 1.3 23.6 <1.25 462 <2.5 

12MW-29SR 2/11/2009 <1.63 22.3 1.71J 826 --- --- <1.5 <1.25 48.3 <10 <10 301 <10 1.2 22.4 <1.25 435 <2.5 

12MW-29S 7/20/2009 49 56 <10H 870H <100H --- <10 15 73 <10 <10 150 <10H 1.1 42 <10H 480H <10H 

12MW-30S 8/18/2004 18J <9.8 <11 440 <160 <0.067 <9 <11 110 <5 <5 52 <8.8 1.6 53 <10 3,800 <7.7 

12MW-30SR 8/18/2004 <94 <98 <110 470 <1,600 0.078J <90 <110 100J <5 <5 47 <88 1.5 <100 <100 3,700 <77 

12MW-30S 5/24/2005 <120 <84 <73 1,200 <1,400 --- <87 <79 270J <1 <1 27 <80 3.3 200J <76 2,600 <58 

12MW-30S 9/13/2005 14J 5.8J <4.6 1,200 <87 --- <5.5 <5 330 <0.5 <0.5 33 <5 2.1 350 <4.8 3,000 24 

12PZ-03D 8/19/2004 <0.19 <0.2 <0.22 <0.18 <3.2 --- <0.18 <0.22 <0.15 <20 <20 180 <0.18 --- <0.2 <0.21 <0.2 <0.15 

12PZ-03D 2/1/2005 <0.29 <0.21 <0.18 <0.17 <3.5 --- <0.22 <0.2 <0.23 --- --- --- <0.2 --- <0.21 <0.19 <0.28 <0.15 

12PZ-03D 5/23/2005 <0.29 <0.21 <0.18 <0.17 <3.5 --- <0.22 <0.2 <0.23 --- --- --- <0.2 --- <0.21 <0.19 <0.28 <0.15 

12PZ-03D 1/31/2006 <0.21 <0.17 <0.16 <0.2 <7 --- <0.2 <0.23 <0.18 --- --- --- <0.25 --- <0.16 <0.21 <0.19 <0.2 

12PZ-03D 6/22/2006 <0.19 <0.21 <0.21 <0.14 <6.6 --- <0.21 <0.2 <0.34 --- --- --- <0.3 --- <0.16 <0.17 <0.19 <0.17 

12PZ-03D 5/21/2007 <0.3 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.25 <0.25 <0.25 <0.5 

12PZ-03D 11/28/2007 <0.3 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 <2 <2 119 <2 --- <0.25 <0.25 <0.25 <0.5 

12PZ-03D 2/11/2009 <0.325 <0.3 <0.25 <0.3 --- --- <0.3 <0.25 <0.3 --- --- --- <2 --- <0.45 <0.25 <0.25 <0.5 

12PZ-03S 8/19/2004 <0.19 <0.2 <0.22 <0.18 <3.2 --- <0.18 <0.22 <0.15 --- --- --- <0.18 --- <0.2 <0.21 <0.2 <0.15 

East Marsh Site 1 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 --- --- --- <0.43 --- <0.31 <0.34 <0.25 <0.11 

East Marsh Site 2 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 --- --- --- <0.43 --- <0.31 <0.34 <0.25 <0.11 

East Marsh Site 3 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 --- --- --- <0.43 --- <0.31 <0.34 <0.25 <0.11 

North Marsh Site 1 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 --- --- --- <0.43 --- <0.31 0.44J <0.25 <0.11 

North Marsh Site 2 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 --- --- --- <0.43 --- <0.31 <0.34 <0.25 <0.11 

North Marsh Site 3 8/16/2004 <0.27 <0.3 <0.34 <0.41 <6.4 --- <0.29 <0.3 <0.4 --- --- --- <0.43 --- <0.31 <0.34 <0.25 <0.11 

54 
 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009.
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample] 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-01S 1/30/2006 --­ --­ --­ --­ --­ --­ <0.05 --­ --­ 2.5 4.9 --­ --­ 95 --­ --­ 18.3 --­

12MW-02D 8/30/2000 --­ --­ --­ 28 --­ --­ 1.5 --­ 78 0.1 6.9 --­ --­ 841 1.7 <0.05 22.1 --­

12MW-02D 11/29/2000 175 --­ 42 22 180 --­ 1.5 8.5 110 0.5 7.2 5.3 130 1,100 5.4 <0.05 20.4 --­

12MW-02D 2/27/2001 175 --­ 35 20 130 --­ 0.30 5.6 45 1.5 6.9 5.2 150 951 <5.0 <0.05 20.2 --­

12MW-02D 5/15/2001 150 --­ 50 15 190 --­ 1.0 10 140 0.8 7.0 5.7 150 1,160 <10 <0.05 20.9 --­

12MW-02D 8/29/2001 200 --­ 39 25 170 --­ 0.15 7.7 96 0.3 6.9 4.6 140 1,060 <5.0 <0.05 22.8 --­

12MW-02D 12/3/2001 200 <4.0 46 18 200 --­ 2.5 9.0 110 0.2 7.2 4.5 140 1,190 <10 <0.05 20.2 --­

12MW-02D 2/27/2002 150 <2.0 43 13 190 --­ 0.40 8.6 73 0.8 7.1 5.2 170 1,030 <5.0 <0.05 14.4 --­

12MW-02D 6/10/2002 225 0.74 45 19 210 --­ 1.0 9.3 110 0.3 7.0 6 170 1,210 <10 <0.05 23.1 --­

12MW-02D 9/9/2002 178 <2.0 45 23 95 --­ 0.35 5.3 41 0.7 6.9 2.5 93.0 783 11 <0.05 24.8 --­

12MW-02D 1/8/2003 200 <1.6 33 23 130 0.20 0.85 6.0 75 0.5 6.9 4.5 150 978 4.3 <0.05 19.8 --­

12MW-02D 4/9/2003 210 <1.6 32 24 110 --­ <0.05 5.1 50 0.3 7.1 4 130 820 6.0 <0.05 18.3 --­

12MW-02D 7/16/2003 225 <1.0 40 28 180 --­ <0.05 8.0 100 0.2 7.0 <0.48 150 1,050 5.3 0.80 23.4 --­

12MW-02D 8/16/2004 200 --­ --­ 18 120 --­ 0.20 --­ --­ 0.5 5.5 --­ --­ 1,110 2.8J <0.05 22.0 19.2 

12MW-02D 5/23/2005 175 --­ 33 20 140 --­ 1.0 6.6 79 0.2 7.0 4.8 150 908 2.5J <0.05 21.9 2.4 

12MW-02D 6/20/2006 185 --­ --­ 23 120 --­ 0.60 --­ --­ 0.2 7.0 --­ --­ 821 3.0 <.05 22.6 --­

12MW-02S 8/30/2000 --­ --­ --­ 250 --­ --­ 0.50 --­ <15 0.5 4.8 --­ --­ 80.6 9.1 <0.05 24.1 --­

12MW-02S 11/29/2000 <50 --­ 0.76 70 9.9 --­ <0.05 0.49 7.4 0.7 5.1 <0.41 13.0 76.0 14 <0.05 21.0 --­

12MW-02S 2/27/2001 <10 --­ 0.76 100 11 --­ 0.10 0.47 6.4 0.9 4.9 <0.54 12.0 77.0 12 <0.05 18.5 --­

12MW-02S 5/15/2001 110 --­ 0.72 95 10 --­ <0.05 0.48 5.8 1.6 5.0 <0.54 11.0 87.4 11 <0.05 22.2 --­

12MW-02S 8/29/2001 <10 --­ 0.39 85 <5.0 --­ 0.10 0.38 3.9 0.5 4.8 <0.54 7.6 50.0 8.5 <0.05 23.9 --­

12MW-02S 12/3/2001 <10 <0.20 0.51 60 9.1 0.30 0.10 0.39 3.6 0.9 4.8 <0.54 11.0 63.6 12 <0.05 20.7 --­

12MW-02S 2/27/2002 <10 <0.20 0.39 24 5.2 --­ <0.05 0.47 4.3 2.5 4.9 <0.54 9.9 49 10 <0.05 13.8 --­

12MW-02S 6/10/2002 <10 <0.50 <0.3 80 8.0 0.82 0.10 0.38 3.2 0.3 4.6 <0.39 11.0 54 11 <0.05 23.2 --­

12MW-02S 9/9/2002 <10 <0.20 0.48 70 8.1 --­ 0.10 0.62 6.5 0.9 4.8 <0.39 11.0 61.8 9.9 <0.05 24.9 --­

12MW-02S 1/8/2003 <10 <0.20 0.57 35 14 0.10 0.05 0.59 6.9 1.0 5.1 0.51J 15.0 77.8 15 <0.05 18.3 --­

12MW-02S 4/9/2003 <10 <0.20 0.95 50 15 4.7 0.40 0.79 27 0.3 4.7 <0.48 19.0 99.5 14 <0.05 16.9 --­

12MW-02S 7/15/2003 <10 <0.20 0.65 80 13 2.9 0.30 0.49 6.5 0.2 5.0 <0.48 12.0 77.0 11 <0.05 24.0 --­

12MW-02S 9/17/2003 <10 --­ 0.6 160 15 14 0.50 0.48 4.4 0.2 5.0 <0.48 14.0 78.8 10 <0.05 25.1 8.3 

12MW-02S 1/14/2004 <10 --­ 0.49 100 13 --­ <0.05 0.44 4 1.5 5.1 <0.48 8.90 67.6 8.9 <0.05 18.6 7 

12MW-02S 4/28/2004 <10 --­ 1.4 120 28 --­ 0.10 1.1 9.2 0.2 4.8 <0.53 19.0 87.9 13 <0.05 18.1 212 

12MW-02S 8/16/2004 <10 --­ <0.15 70 4.7 --­ <0.05 0.30 1.8J 1.5 4.8 <0.53 8.1 54.5 9.0 --­ 24.4 3.4 

12MW-02S 2/2/2005 <10 --­ 0.17J 50 4.4 --­ 0.10 0.44 --­ 2.0 5.2 0.57J 9.2 68.7 9.8 <0.05 16.8 23.3 

12MW-02S 5/23/2005 <10 --­ 0.22J 50 4.0 --­ <0.05 0.30 2.2 2.0 4.9 <0.36 8.7 50.2 10 <0.05 21.4 3.3 

12MW-02S 9/12/2005 <10 --­ 0.18J 120 5.1 --­ <0.05 0.32 1.9J 0.3 4.7 <0.36 9.6 53.9 11 <0.05 24.7 --­

12MW-02S 1/30/2006 --­ --­ --­ --­ 8.6 --­ <0.05 --­ --­ 0.7 4.9 --­ --­ 74.0 10 --­ 19.3 --­

12MW-02S 6/20/2006 <10 --­ --­ 95 5.0 --­ <0.05 --­ --­ 3.0 4.8 --­ --­ 54.0 11 <0.05 23.6 --­

12MW-02S 9/11/2006 <10 --­ --­ 120 7.6 --­ <0.05 --­ --­ 2.0 4.4 --­ --­ 56.0 9.0 <0.05 25.2 --­

12MW-02S 5/21/2007 <10 --­ --­ 120 9.7 --­ <0.05 --­ --­ 0.3 4.7 --­ --­ 247 8.9 <0.05 22.2 --­

12MW-02S 11/28/2007 <10 --­ 0.24 150 10 --­ 0.07 0.58 3.1J 1.0 5.1 0.372 12.6 80 9.4 0.08 22.6 --­

12MW-02S 2/10/2009 <10 --­ --­ 30 9.8 --­ <0.05 --­ --­ 1 4.9 --­ --­ 84 11 <0.2 18.4 --­

12MW-03D 8/30/2000 --­ --­ --­ 21 --­ --­ 1.5 --­ 84 0.2 7.0 --­ --­ 748 <1.0 <0.05 24.0 --­

12MW-03D 11/30/2000 225 --­ 33 13 110 --­ 1.5 6.5 80 0.6 7.1 5.2 --­ 714 <5.0 <0.05 17.9 --­

12MW-03D 2/27/2001 150 --­ 30 18 97 --­ 0.50 6.0 70 0.6 7.0 4.7 110 682 <5.0 <0.05 19.3 --­

12MW-03D 5/15/2001 155 --­ 34 18 110 --­ 0.50 6.7 120 0.9 7.0 4.9 100 736 <5.0 <0.05 22.0 --­

12MW-03D 8/29/2001 170 --­ 39 15 120 --­ 1.0 7.6 89 0.2 7.0 5.2 100 816 <5.0 <0.05 22.7 --­

12MW-03D 12/4/2001 175 <2.0 43 17 150 0.20 1.5 8.8 100 0.2 7.2 6.1 110 963 <5.0 0.15 21.5 --­

12MW-03D 2/27/2002 200 <1.0 33 10 110 --­ 0.80 7.0 72 0.8 7.2 5.5 110 768 2.6 <0.05 17.8 --­

12MW-03D 6/11/2002 250 0.62 40 16 140 0.15 1.0 7.8 94 0.3 7.0 6.1 120 899 <5.0 <0.05 23.2 --­

55 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-03D 9/10/2002 200 <1.0 29 19 110 --­ 1.5 6.3 77 0.05 7.1 5.1 100 748 <2.5 <0.05 23.7 --­

12MW-03D 1/9/2003 200 <0.80 26 20 76 0.10 0.10 5.1 46 0.8 7.0 4.7 100 627 2.7 <0.05 18.6 --­

12MW-03D 4/9/2003 160 <0.60 27 15 61 --­ 0.15 5.2 83 0.3 7.1 4.4 98.0 612 3.0 <0.05 18.5 --­

12MW-03D 7/15/2003 150 <0.50 28 22 81 --­ 0.60 5.6 100 0.1 7.0 4.2 92.0 659 2.5J <0.05 22.2 --­

12MW-03D 8/16/2004 150 --­ --­ 14 57 --­ 1.0 --­ --­ 0.1 7.0 --­ --­ 608 3.2 <0.05 22.7 --­

12MW-03D 5/25/2005 50 --­ 33 13 110 --­ 0.20 6.6 76 0.2 7.7 5.1 110 742 3.4 <0.05 20.5 --­

12MW-03D 6/21/2006 140 --­ --­ 19 110 --­ 0.20 --­ --­ 0.1 7.1 --­ --­ 749 2.1J <0.05 23.7 --­

12MW-03D 5/21/2007 160 --­ --­ 21 120 --­ 0.20 --­ --­ 0.05 7.0 --­ --­ 954 2.4 <0.05 21.4 --­

12MW-03D 5/6/2008 190 --­ --­ 28 77 --­ 0.17 --­ --­ <0.05 7.1 --­ --­ 632 1.6 0.05 21.2 --­

12MW-03D 9/1/2009 140 --­ --­ 12 --­ --­ 0.14 --­ --­ 0.1 6.9 --­ --­ 683 --­ <0.2 21.6 --­

12MW-03S 8/30/2000 --­ --­ --­ 250 --­ --­ 7.0 --­ <15 0.05 5.3 --­ --­ 331 4.7 <0.05 25.5 --­

12MW-03SR 8/30/2000 --­ --­ --­ --­ --­ --­ --­ --­ <15 --­ --­ --­ --­ --­ 4.7 --­ --­ --­

12MW-03S 11/30/2000 <50 --­ 4.9 60 110 --­ 15 3.7 30 0.3 5.3 0.67J --­ 416 5.3 <0.05 17.4 --­

12MW-03S 2/27/2001 <10 --­ 1.2 140 62 --­ 2.0 2.0 7 0.4 4.4 <0.54 37.0 241 5.4 <0.05 17.3 --­

12MW-03SR 2/27/2001 --­ --­ 0.5 --­ 59 --­ --­ 1.7 6.8 --­ --­ <0.54 38.0 --­ 5.3 --­ --­ --­

12MW-03S 5/15/2001 <10 --­ 17 250 210 --­ 16 12 100 0.2 4.8 0.9J 87.0 733 <10 <0.05 26.6 --­

12MW-03S 8/29/2001 <10 --­ 28 250 260 --­ 17 16 150 --­ 4.7 1.4J 95.0 880 <10 <0.05 24.0 --­

12MW-03SR 8/29/2001 --­ --­ 28 --­ 270 --­ --­ 16 150 --­ --­ 1.3J 93.0 --­ <10 --­ --­ --­

12MW-03S 12/5/2001 <10 <5.0 40 320 400 1.6 32 25 220 <0.05 4.7 2.3 130 1,310 <13 <0.05 22.5 --­

12MW-03SR 12/5/2001 --­ <5.0 40 --­ 410 --­ --­ 25 220 --­ --­ 2.3 120 --­ <13 --­ --­ --­

12MW-03S 2/27/2002 <10 <1.0 2.1 160 110 --­ 3.0 4.0 18 <0.05 4.4 <0.54 55.0 372 3.8 <0.05 16.9 --­

12MW-03SR 2/27/2002 --­ <1.0 2.1 --­ 110 --­ --­ 4.0 17 --­ --­ <0.54 54.0 --­ 5.2 --­ --­ --­

12MW-03S 6/11/2002 <10 0.98 24 250 230 33 14 14 130 <0.05 4.8 1.8 95.0 822 <10 <0.05 23.1 --­

12MW-03SR 6/11/2002 --­ 0.77 23 --­ 200 --­ --­ 14 130 --­ --­ 1.8 92.0 --­ <10 --­ --­ --­

12MW-03S 9/10/2002 <10 <1.0 8.3 220 160 7.0 6.0 6.4 57 0.05 4.5 0.66J 64.0 367 3.1 <0.05 25.9 --­

12MW-03SR 9/10/2002 --­ <1.0 8.6 --­ 170 --­ --­ 6.6 62 --­ --­ 0.79J 63.0 --­ 2.9 --­ --­ --­

12MW-03S 1/9/2003 <10 <1.6 2.3 190 130 0.20 5.4 3.1 16 0.2 4.2 0.44J 51.0 311 <4.0 <0.05 17.5 --­

12MW-03SR 1/9/2003 --­ <1.6 2.5 --­ 130 --­ --­ 3.2 16 --­ --­ 0.52J 51.0 --­ 5.4 --­ --­ --­

12MW-03S 4/10/2003 38 <20 9.8 60 170 25 38 6.9 56 0.1 5.2 0.7J 62.0 590 <5.0 0.15 16.4 --­

12MW-03SR 4/10/2003 --­ <20 9.3 --­ 170 24 --­ 6.6 53 --­ --­ 0.49J 66.0 --­ <5.0 --­ --­ --­

12MW-03S 7/17/2003 <10 <0.50 2.5 160 93 3.6 9.0 2.7 16 <0.05 4.9 <0.48 39.0 213 3.2 0.25 23.4 --­

12MW-03SR 7/17/2003 --­ <0.50 2.5 --­ 94 --­ --­ 2.7 17 --­ --­ <0.48 38.0 --­ 3.5 --­ --­ --­

12MW-03S 9/16/2003 <10 --­ 2.6 160 80 3.0 5.0 2.5 17 0.2 5.0 <0.48 39.0 198 3.8 0.05 24.5 29.4 

12MW-03S 1/14/2004 <10 --­ 1.0 140 62 4.0 1.0 2.0 8.3 0.2 4.4 <0.48 28.0 234 8.0 <0.05 19.2 4.9 

12MW-03S 4/27/2004 <10 --­ 8.6 180 110 71 10 5.7 49 <0.05 5.1 1.2J 43.0 385 6.7 <0.05 18.1 --­

12MW-03S 8/18/2004 <10 --­ 0.38 170 33 1.2 3.7 1.2 4.7 0.05 4.6 <0.53 26.0 144 13 0.05 25.5 11.2 

12MW-03S 2/2/2005 <10 --­ 2.4 120 44 1.6 4.0 2.1 --­ 0.05 4.9 <0.53 29.0 198 13 <0.05 19.1 0 

12MW-03S 5/24/2005 <10 --­ 0.30 140 27 1.6 1.8 0.74 2.8 0.1 5.0 <0.36 22.0 162 19 --­ 20.6 7.7 

12MW-03S 9/13/2005 <10 --­ 0.46 35 19 --­ 2.0 0.65 2.7 0.2 5.2 <0.36 19.0 139 18 <0.05 24.2 8.9 

12MW-03S 1/31/2006 --­ --­ --­ --­ 21 --­ 0.35 --­ --­ 0.2 4.8 --­ --­ 149 18 --­ 19.5 5.1 

12MW-03S 6/21/2006 <10 --­ --­ 110 13 --­ 0.90 --­ --­ 0.1 5.0 --­ --­ 123 23 <0.05 23.4 --­

12MW-03S 9/12/2006 <10 --­ --­ 45 11 --­ 0.10 --­ --­ 0.2 4.7 --­ --­ 112 23 <0.05 23.0 --­

12MW-03S 5/21/2007 <10 --­ --­ 70 17 --­ <0.05 --­ --­ 0.3 4.7 --­ --­ 329 20 <0.05 20.4 --­

12MW-03S 7/16/2007 <10 --­ --­ 90 7.7 --­ <0.05 --­ --­ 3.0 4.7 --­ --­ 103 24 <0.05 22.3 --­

12MW-03S 11/27/2007 <10 --­ --­ 30 7.1 --­ <1.0 --­ --­ 0.2 4.4 --­ --­ 106 23 0.042 20.6 --­

12MW-03S 5/6/2008 <10 --­ --­ 20 8.8 --­ <0.05 --­ --­ 0.1 4.8 --­ --­ 105 23 0.08 19.5 --­

12MW-03S 2/12/2009 <10 --­ --­ 20 5.2 --­ 1.3 --­ --­ 0.2 4.9 --­ --­ 90 22 <0.2 18.6 --­

12MW-03S 7/20/2009 <10 --­ --­ 20 10 --­ 0.69 --­ --­ 0.2 5.3 --­ --­ 104 24 <0.2 21.4 --­

12MW-04D 8/28/2000 --­ --­ --­ --­ --­ --­ 0.90 --­ 99 0.2 7.1 --­ --­ 632 2.8 <0.05 27.0 --­

12MW-04D 11/28/2000 200 --­ 41 14 79 --­ 2.0 8.0 110 0.3 7.1 7.5 100 749 <5.0 <0.05 23.5 --­

12MW-04D 2/26/2001 145 --­ 36 <10 67 --­ 0.35 5.4 58 0.7 8.3 6.4 75.0 571 <5.0 <0.05 22.4 --­

56 
 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-04D 5/14/2001 110 --­ 43 12 88 --­ 0.20 8.7 97 0.9 7.1 6.8 86.0 730 <5.0 --­ 23.5 --­

12MW-04D 8/27/2001 150 --­ 46 17 84 --­ 0.90 9.2 120 0.2 7.2 6.7 79.0 633 <5.0 <0.05 25.2 --­

12MW-04D 12/3/2001 200 <1.0 49 15 92 --­ 1.5 10 120 0.1 7.4 6.2 84.0 791 <5.0 <0.05 21.8 --­

12MW-04D 2/26/2002 180 <1.0 44 10 81 --­ 0.70 8.5 100 0.5 7.1 6.6 94.0 721 <2.5 <0.05 21.7 --­

12MW-04D 6/11/2002 225 <0.50 40 16 98 --­ 0.90 7.8 110 0.5 7.1 7.1 100 781 <5.0 <0.05 23.4 --­

12MW-04D 9/9/2002 225 <0.40 43 20 63 --­ 1.5 8.1 120 0.05 7.0 5.9 75.0 669 <1.0 <0.05 26.3 --­

12MW-04D 1/7/2003 200 <0.40 40 18 40 --­ 1.0 7.1 88 0.7 7.2 5.0 60.0 531 3.4 <0.05 20.3 --­

12MW-04D 4/7/2003 100 <0.60 36 18 45 --­ <0.05 6.9 30 0.05 7.7 5.4 58.0 479 4.9 <0.05 21.8 --­

12MW-04D 7/14/2003 210 0.31J 47 15 69 --­ 0.60 9.3 120 0.2 7.0 5.0 61.0 682 1.4J <0.05 24.6 --­

12MW-04D 8/18/2004 200 --­ --­ 23 51 --­ 0.80 --­ --­ <0.05 6.8 --­ --­ 555 2.1 <0.05 23.0 6 

12MW-04S 8/28/2000 --­ --­ --­ --­ --­ --­ 3.5 --­ 43 0.3 4.2 --­ --­ 138 8.8 <0.05 27.9 --­

12MW-04S 11/28/2000 <50 --­ 0.31 300 22 --­ 1.5 0.96 44 0.4 4.6 <0.41 23.0 144 14 <0.05 22.8 --­

12MW-04S 2/26/2001 <10 --­ <0.30 270 19 --­ 3.0 0.89 45 0.3 5.3 <0.54 19.0 80 14 --­ 18.4 --­

12MW-04S 5/14/2001 <10 --­ 0.44 250 19 --­ 0.25 0.86 41 2.5 4.4 <0.54 19.0 129 12 <0.05 23.0 --­

12MW-04S 8/27/2001 <10 --­ 0.30 320 17 --­ 0.15 0.84 37 0.6 4.4 <0.54 18.0 132 12 <0.05 28.4 --­

12MW-04S 12/3/2001 <10 0.68 <0.30 300 16 0.20 <0.05 0.81 34 0.3 4.5 <0.54 18.0 120 15 <0.05 22.4 --­

12MW-04S 2/26/2002 <10 0.68 <0.30 300 16 --­ 0.35 0.83 37 1.0 4.7 <0.54 21.0 121 17 <0.05 19.9 --­

12MW-04S 6/11/2002 <10 0.74 <0.30 320 17 0.40 0.05 0.67 32 3.5 4.5 <0.39 21.0 125 15 <0.05 24.0 --­

12MW-04S 9/9/2002 <10 0.45 <0.30 260 14 --­ 2.5 0.67 29 0.3 4.5 <0.39 19.0 124 14 <0.05 28.7 --­

12MW-04S 1/7/2003 <10 0.61 <0.30 250 17 --­ 3.1 0.73 36 0.2 4.7 <0.39 22.0 132 18 <0.05 17.7 --­

12MW-04S 4/7/2003 <10 0.67 <0.30 300 16 --­ 3.5 0.73 41 0.1 4.8 <0.48 20.0 130 16 <0.05 20.4 --­

12MW-04S 7/14/2003 <10 0.67 0.26J 300 15 --­ 1.5 0.63 39 0.3 4.3 <0.48 13.0 113 17 <0.05 25.9 --­

12MW-04S 9/16/2003 <10 --­ 0.24J 270 14 --­ 3.0 0.63 27 0.2 4.6 <0.48 18.0 123 16 <0.05 26.7 13 

12MW-04S 1/12/2004 <10 --­ 0.78 200 17 --­ 0.70 0.80 38 0.3 4.4 <0.48 16.0 124 16 <0.05 18.8 32.6 

12MW-04S 4/26/2004 <10 --­ 0.15J 220 14 --­ 2.5 0.75 39 0.8 4.5 <0.53 15.0 118 21 <0.05 20.5 48.4 

12MW-04S 8/18/2004 <10 --­ 9.1 220 12 --­ 0.80 0.80 25 0.2 4.6 1.0J 18.0 170 29 <0.05 25.3 54.1 

12MW-04S 2/1/2005 <10 --­ 0.27J 220 12 --­ 1.0 0.85 --­ 0.7 4.8 <0.53 18.0 126 18 <0.05 19.3 27.6 

12MW-04S 5/23/2005 <10 --­ 0.36 300 13 --­ 0.50 0.68 36 0.3 4.6 <0.36 16.0 117 18 <0.05 24.0 19.2 

12MW-04S 9/12/2005 <10 --­ 0.40 260 12 --­ 4.5 0.62 26 0.2 4.7 <0.36 16.0 127 18 <0.05 27.2 --­

12MW-04S 1/30/2006 --­ --­ --­ --­ 9.7 --­ 2.5 --­ --­ 0.2 4.8 --­ --­ 125 20 --­ 19.8 --­

12MW-04S 6/21/2006 <10 --­ --­ 250 11 --­ 1.0 --­ --­ 0.2 4.6 --­ --­ 140 56 <0.05 26.0 --­

12MW-04S 9/11/2006 <10 --­ --­ 300 16 --­ 4.0 --­ --­ 0.2 4.7 --­ --­ 125 19 <0.05 28.9 --­

12MW-04S 5/22/2007 <10 --­ --­ 250 9.2 --­ 1.0 --­ --­ 0.2 4.7 --­ --­ 112 19 <0.05 22.9 --­

12MW-04S 11/28/2007 <10 --­ 0.20 30 9.8 --­ 1.6 0.60 26 0.1 5.5 0.19 20.0 129 19 0.14 22.8 --­

12MW-04S 2/10/2009 <10 --­ --­ 45 8.4 --­ 2 --­ --­ 0.03 4.8 --­ --­ 132 23 <0.2 19.3 --­

12MW-05D 8/30/2000 --­ --­ --­ 19 --­ --­ 0.50 --­ 84 0.6 7.3 --­ --­ 1,240 11 <0.05 21.5 --­

12MW-05D 11/30/2000 250 --­ 41 15 180 --­ 1.0 9.7 73 0.6 7.3 12 --­ 1,390 13 <0.05 17.8 --­

12MW-05D 2/28/2001 350 --­ 46 22 180 --­ 0.50 11 91 0.4 7.2 12 210 1,300 7.6 0.80 17.0 --­

12MW-05D 5/15/2001 250 --­ 43 18 92 --­ 0.50 9.8 80 0.3 7.4 9.9 200 1,290 8.2 0.35 20.2 --­

12MW-05D 8/28/2001 350 --­ 39 17 --­ --­ 0.40 9.4 63 0.8 7.3 11 220 1,280 --­ 0.40 22.2 --­

12MW-05D 12/4/2001 350 <2.0 35 18 130 0.50 0.90 9.0 58 0.3 7.5 10 210 1,220 <5.0 0.10 20.0 --­

12MW-05D 2/28/2002 300 <1.0 33 11 150 --­ 0.70 8.8 48 0.8 7.2 11 230 1,170 14 0.10 12.3 --­

12MW-05D 6/11/2002 375 0.65 32 13 130 --­ 0.50 7.8 41 0.2 7.3 11 230 1,170 14 <0.05 22.6 --­

12MW-05D 9/10/2002 375 <2.0 31 18 130 --­ 0.70 7.8 47 0.3 7.4 9.6 210 1,300 12 0.05 21.8 --­

12MW-05D 1/8/2003 300 <2.0 39 18 170 0.30 0.60 9.0 68 0.2 7.4 11 220 1,250 13 <0.05 18.0 --­

12MW-05D 4/7/2003 325 <1.6 42 18 180 --­ 0.80 9.7 78 0.2 7.8 12 210 1,230 10 <0.05 19.2 --­

12MW-05I 8/30/2000 --­ --­ --­ 19 --­ --­ 0.70 --­ 49 0.4 7.0 --­ --­ 637 1.1 <0.05 20.9 --­

12MW-05I 11/30/2000 120 --­ 17 13 100 --­ 1.0 3.5 42 0.6 7.2 3.3 --­ 634 <5.0 <0.05 18.6 --­

12MW-05I 2/28/2001 120 --­ 15 16 93 --­ 0.15 3.3 40 0.4 6.9 3.2 100 597 <5.0 <0.05 17.9 --­

12MW-05I 5/16/2001 100 --­ 16 16 98 --­ 0.40 3.4 46 0.8 6.8 3.0 97.0 618 5.9 <0.05 18.9 --­

12MW-05I 8/29/2001 125 --­ 20 20 120 --­ 0.70 4.0 48 0.05 6.9 3.4 110 665 <5.0 <0.05 21.7 --­

57 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-05I 12/4/2001 150 <2.0 22 16 130 1.5 1.5 4.4 53 0.05 7.0 3.7 110 760 <5.0 <0.05 20.2 --­

12MW-05I 2/27/2002 150 <1.0 22 10 130 --­ 0.50 4.9 55 0.6 7.2 4.0 130 773 4.7 <0.05 15.1 --­

12MW-05I 6/11/2002 137 0.64 24 15 150 --­ 0.50 4.7 55 0.2 6.9 4.1 130 826 5.5 <0.05 22.6 --­

12MW-05I 9/10/2002 110 <1.0 18 18 130 --­ 0.60 4.0 47 0.05 7.0 3.3 120 740 2.9 <0.05 21.2 --­

12MW-05I 1/8/2003 140 <1.0 13 18 87 0.30 3.0 2.7 32 0.7 6.9 3.1 97.0 562 <2.5 <0.05 17.2 --­

12MW-05I 4/7/2003 --­ <1.0 14 --­ 92 1.5 --­ 3.1 48 --­ 6.8 2.9 98.0 570 <2.5 --­ 19.2 --­

12MW-05I 7/14/2003 <10 <0.50 16 15 100 7.2 0.50 3.4 44 0.2 6.6 2.7 89.0 617 1.9J <0.05 20.3 --­

12MW-05I 8/18/2004 100 --­ --­ 17 110 --­ 0.40 --­ --­ <0.05 6.9 --­ --­ 678 2.3J <0.05 21.0 --­

12MW-05I 5/25/2005 110 --­ 19 10 110 --­ <0.05 3.8 51 0.2 7.1 3.4 120 666 2.2 <0.05 18.5 --­

12MW-05I 6/22/2006 125 --­ --­ 18 120 --­ 0.40 --­ --­ 0.1 6.8 --­ --­ 695 3.1 <0.05 20.8 --­

12MW-05S 8/30/2000 --­ --­ --­ 260 --­ --­ 3.5 --­ 34 0.2 5.3 --­ --­ 578 2.8 <0.05 21.7 --­

12MW-05S 11/30/2000 <50 --­ 8.1 100 130 --­ 2.0 4.4 40 0.3 5.3 1.4J --­ 527 5.5 <0.05 18.9 --­

12MW-05SR 11/30/2000 --­ --­ 8.3 --­ 130 --­ --­ 4.5 41 --­ --­ 1.5J --­ --­ 5.6 --­ --­ --­

12MW-05S 2/28/2001 25 --­ 9.0 90 120 --­ 0.90 4.6 35 0.6 5.4 1.5J 85.0 500 <5.0 <0.05 16.5 --­

12MW-05SR 2/28/2001 --­ --­ 9.0 --­ 120 --­ --­ 4.5 35 --­ --­ 1.8J 83.0 --­ <5.0 --­ --­ --­

12MW-05S 5/16/2001 19 --­ 8.8 200 130 --­ 4.5 4.5 32 0.4 5.3 1.2J 73.0 529 <5.0 <0.05 18.4 --­

12MW-05SR 5/16/2001 --­ --­ 8.5 --­ 130 --­ --­ 4.4 32 --­ --­ 1.3J 71.0 --­ <5.0 --­ --­ --­

12MW-05S 8/29/2001 <10 --­ 9.2 220 140 --­ 3.5 4.8 34 0.1 5.2 1.3J 75.0 543 <5.0 <0.05 22.4 --­

12MW-05SR 8/29/2001 --­ --­ 9.5 --­ 140 --­ --­ 4.9 35 --­ --­ 1.4J 73.0 --­ <5.0 --­ --­ --­

12MW-05S 12/4/2001 <10 <2.0 7.4 250 130 5.5 2.5 4.3 30 0.2 5.2 1.1J 67.0 526 <5.0 <0.05 20.0 --­

12MW-05SR 12/4/2001 --­ <2.0 7.3 --­ 110 --­ --­ 4.2 29 --­ --­ 1.3J 68.0 --­ <5.0 --­ --­ --­

12MW-05S 2/28/2002 <10 <1.0 7.9 120 120 --­ 1.5 4.6 31 0.7 5.8 1.3J 78.0 505 <5.0 <0.05 12.9 --­

12MW-05S 6/11/2002 <10 1.1 7.3 250 130 --­ 2.5 4.1 28 0.1 5.1 1.3J 76.0 529 <5.0 <0.05 21.4 --­

12MW-05SR 6/11/2002 --­ 1.2 7.5 --­ 120 --­ --­ 4.1 28 --­ --­ 1.3J 77.0 --­ <5.0 --­ --­ --­

12MW-05S 9/10/2002 <10 <1.0 6.4 270 130 0.62 2.5 4.0 28 0.3 5.0 1.2J 74.0 546 3.0 <0.05 22.0 --­

12MW-05SR 9/10/2002 --­ <1.0 6.3 --­ 120 --­ --­ 3.8 27 --­ --­ 1.1J 74.0 --­ 2.8 --­ --­ --­

12MW-05S 1/8/2003 <10 <1.6 6.6 160 120 3.7 1.5 3.9 25 0.3 5.2 1.1J 77.0 493 4.0 <0.05 16.3 --­

12MW-05SR 1/8/2003 --­ <1.6 6.5 --­ 130 --­ --­ 4.0 25 --­ --­ 1.2J 77.0 --­ 4.6 --­ --­ --­

12MW-05S 4/10/2003 <10 <1.6 6.0 180 120 3.1 2.5 3.7 22 0.3 5.1 1.1J 75.0 473 5.3 <0.05 15.9 --­

12MW-05SR 4/10/2003 --­ 1.8 6.0 --­ 120 --­ --­ 3.7 23 --­ --­ 0.96J 66.0 --­ 4.2 --­ --­ --­

12MW-05S 7/17/2003 <10 <0.8 6.6 170 130 8.4 2.5 3.9 25 <0.05 5.4 0.91J 69.0 489 4.5 <0.05 21.5 --­

12MW-05SR 7/17/2003 --­ 1J 7.3 --­ 130 --­ --­ 4.0 25 --­ --­ 1.1J 65.0 --­ 5.1 --­ --­ --­

12MW-05S 9/16/2003 <10 --­ 5.7 --­ 110 2.7 2.0 3.5 22 0.2 4.9 1.3J 71.0 459 4.4 <0.05 20.9 1.9 

12MW-05SR 9/16/2003 --­ --­ 5.7 --­ 110 --­ --­ 3.4 21 --­ --­ 1.2J 72.0 --­ 4.0 --­ --­ --­

12MW-05S 1/14/2004 <10 --­ 6.2 40 120 2.0 1.0 3.4 25 0.4 5.1 1.3J 56.0 464 3.7J <0.05 17.5 3.9 

12MW-05SR 1/14/2004 --­ --­ 6.1 --­ 120 --­ --­ 3.4 25 --­ --­ 1.4J 55.0 --­ 4.0J --­ --­ --­

12MW-05S 4/27/2004 <10 --­ --­ 130 --­ 3.0 2.0 --­ --­ <0.05 5.3 --­ --­ 470 --­ <0.05 17.8 --­

12MW-05SR 4/27/2004 --­ --­ 5.6 --­ 110 --­ --­ 3.5 21 --­ --­ 1.7J 57.0 --­ 5.0 --­ --­ --­

12MW-05S 8/18/2004 --­ --­ 6.0 <10 110 1.8 1.5 3.7 23 0.3 5.0 <0.53 26.0 450 4.2 <0.05 21.7 2.7 

12MW-05SR 8/18/2004 --­ --­ 6.1 --­ 110 --­ --­ 3.7 23 --­ --­ 1.9 67.0 --­ 4.9 --­ --­ --­

12MW-05S 2/2/2005 <10 --­ 5.8 180 110 1.9 1.5 3.4 --­ 0.05 5.3 1.4J 62.0 454 4.0 <0.05 18.0 --­

12MW-05SR 2/2/2005 --­ --­ 5.8 --­ 100 --­ --­ 3.4 --­ --­ --­ 1.4J 63.0 --­ 7.2 --­ --­ --­

12MW-05S 5/24/2005 <10 --­ 5.9 180 96 1.5 1.25 3.0 22 0.05 6.2 1.1J 59.0 399 4.2 <0.05 17.8 1.5 

12MW-05SR 5/24/2005 --­ --­ 5.6 --­ 95 --­ --­ 3.0 22 --­ --­ 1.1J 59.0 --­ 4.3 --­ --­ --­

12MW-05S 9/13/2005 <10 --­ 5.0 80 97 --­ 1.5 2.7 20 0.1 5.6 1.1J 54.0 378 4.2 <0.05 21.8 7.9 

12MW-05SR 9/13/2005 --­ --­ 5.3 --­ 91 --­ --­ 2.8 20 --­ --­ 1.1J 59.0 --­ 4.2 --­ --­ --­

12MW-05S 1/31/2006 --­ --­ --­ --­ 76 --­ 1.0 --­ --­ 0.2 5.2 --­ --­ 353 4.3 --­ 18.4 0.3 

12MW-05SR 1/31/2006 --­ --­ --­ --­ 77 --­ --­ --­ --­ --­ --­ --­ --­ --­ 4.4 --­ --­ --­

12MW-05S 6/20/2006 <10 --­ --­ 100 83 --­ 3.0 --­ --­ 0.05 5.2 --­ --­ 346 4.6 <0.05 20.1 --­

12MW-05SR 6/20/2006 --­ --­ --­ --­ 83 --­ --­ --­ --­ --­ --­ --­ --­ --­ 4.5 --­ --­ --­

12MW-05S 9/12/2006 <10 --­ --­ 70 75 --­ 1.5 --­ --­ 0.1 5.2 --­ --­ 343 5.6 <0.05 21.4 --­

58 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-05SR 9/12/2006 --­ --­ --­ 75 --­ --­ --­ --­ --­ --­ --­ 4.3 --­ --­ --­

12MW-05S 5/22/2007 <10 --­ --­ 50 63 --­ 2.0 --­ --­ 0.05 5.3 --­ --­ 327 4.5 <0.05 19.0 --­

12MW-05SR 5/22/2007 --­ --­ --­ --­ 63 --­ --­ --­ --­ --­ --­ --­ --­ --­ 4.6 --­ --­ --­

12MW-05S 7/17/2007 <10 --­ --­ 60 64 --­ 1.4 --­ --­ 0.1 6.0 --­ --­ 337 4.3 <0.05 20.3 --­

12MW-05SR 7/17/2007 --­ --­ --­ --­ 63 --­ --­ --­ --­ --­ --­ --­ --­ --­ 4.4 --­ --­ --­

12MW-05S 11/27/2007 <10 --­ --­ 35 57 --­ 0.62 --­ --­ 0.1 6.0 --­ --­ 313 4.5 0.10 18.8 --­

12MW-05S 5/6/2008 <10 --­ --­ 40 62 --­ 1.3 --­ --­ 0.05 5.2 --­ --­ 317 3.8 <0.60 18.4 --­

12MW-05SR 5/6/2008 --­ --­ --­ --­ 61 --­ --­ --­ --­ --­ --­ --­ --­ --­ 3.9 --­ --­ --­

12MW-05S 2/11/2009 <10 --­ --­ 27 70 --­ 0.89 --­ --­ <0.02 5.3 --­ --­ 332 4.2 0.37 18.5 --­

12MW-05S 7/20/2009 <10 --­ --­ 35 81 --­ 2.4 --­ --­ 0.1 5 --­ --­ 344 6.9 0.27 20.6 --­

12MW-06D 8/29/2000 --­ --­ --­ 65 --­ --­ 14 --­ 810 0.2 6.4 --­ --­ 2,250 22 <0.05 20.3 --­

12MW-06D 11/29/2000 225 --­ 110 45 530 --­ 16 21 750 0.2 6.8 9.8 230 2,280 22 0.05 16.6 --­

12MW-06D 2/27/2001 240 --­ 95 70 540 --­ 12 19 650 0.2 6.5 9.9 280 2,310 <25 <0.05 15.9 --­

12MW-06D 5/14/2001 225 --­ 110 40 470 --­ 10 22 800 1.0 6.6 8.1 280 2,340 21 <0.05 18.8 --­

12MW-06D 8/28/2001 275 --­ 34 50 460 --­ 15 17 280 <0.05 6.5 1.9J 250 2,180 <25 <0.05 23.8 --­

12MW-06D 7/16/2007 220 --­ --­ 30 --­ --­ 10 --­ --­ <0.05 6.3 --­ --­ 2,200 --­ <0.05 21.0 --­

12MW-06D 11/28/2007 120 --­ 100 14 500 --­ 9.4 22 750 0.1 7.7 9.59 298 2,180 19 0.12 17.0 --­

12MW-06D 2/11/2009 <10 --­ --­ 40 --­ --­ 37 --­ --­ <0.02 4.4 --­ --­ 2,580 --­ <0.2 18.7 --­

12MW-06S 8/29/2000 --­ --­ --­ 200 --­ --­ 26 --­ 270 0.05 5.4 --­ --­ 1,730 17 0.25 21.9 --­

12MW-06S 11/29/2000 <50 --­ 29 85 470 --­ 32 14 250 0.1 5.7 2.3 190 1,710 19 0.25 16.2 --­

12MW-06S 2/27/2001 <10 --­ 29 180 500 --­ 22 15 250 0.3 5.0 2.0 260 1,810 30 0.25 13.8 --­

12MW-06S 5/14/2001 <10 --­ 32 170 270 --­ 30 16 270 0.3 5.3 1.4J 230 1,690 22 0.15 18.9 --­

12MW-06S 8/28/2001 50 --­ 120 100 580 --­ 30 23 840 <0.05 5.7 8.6 280 1,690 <25 0.20 24.4 --­

12MW-06S 12/4/2001 100 <5.0 33 75 480 --­ 23 19 280 <0.05 6.2 1.8J 280 1,900 <13 0.60 17.1 --­

12MW-06S 2/26/2002 <10 <1.0 67 90 1,000 --­ 75 55 550 <0.05 4.8 2.6 570 3,880 130 0.25 18.1 --­

12MW-06S 6/11/2002 <10 3.2 61 320 980 --­ 75 45 480 <0.05 4.6 2.8 500 3,640 100 0.25 20.7 --­

12MW-06S 9/9/2002 <10 <1.00 55 310 970 --­ 65 46 460 <0.05 4.5 3.0 730 3,870 100 0.15 22.7 --­

12MW-06S 1/7/2003 <10 <5.0 38 200 570 --­ 38 19 320 <0.05 5.1 2.1 310 2,150 63 0.05 13.9 --­

12MW-06S 4/8/2003 <10 <6.0 35 210 530 --­ 25 18 300 0.05 5.4 1.7J 260 1,860 30 <0.05 15.3 --­

12MW-06S 8/19/2004 <10 --­ --­ 150 510 --­ 20 --­ --­ <0.05 5.4 --­ --­ 1,840 22 --­ 22.0 33.2 

12MW-06S 5/23/2005 30 --­ --­ 70 --­ --­ 20 --­ --­ <0.05 6.6 --­ --­ 1,800 --­ 0.30 18.9 --­

12MW-06S 6/22/2006 <10 --­ --­ 50 --­ --­ 35 <0.05 5.2 --­ --­ 1,780 --­ 0.10 19.7 --­

12MW-06S 5/21/2007 <10 --­ --­ 50 --­ --­ 35 --­ --­ <0.05 5.2 --­ --­ 1,780 --­ <0.05 18.6 --­

12MW-06S 5/6/2008 <10 --­ --­ 40 --­ 49 --­ --­ <0.05 4.8 --­ --­ 2,090 --­ <0.6 18.0 --­

12MW-06S 2/11/2009 160 --­ --­ 18 --­ --­ 4.1 --­ --­ 0.2 5.4 --­ --­ 2,280 --­ <0.2 18.7 --­

12MW-07D 8/28/2000 --­ --­ --­ <100 --­ --­ 4.8 --­ 190 0.2 6.6 --­ --­ 1,620 26 <0.05 20.5 --­

12MW-07D 11/29/2000 85 --­ 73 32 370 --­ 6.0 15 200 --­ 6.6 8.8 130 1,560 32 <0.05 18.1 --­

12MW-07D 2/26/2001 120 --­ 65 35 290 --­ 5.5 13 190 0.5 6.7 8.1 150 1,327 22 <0.05 18.7 --­

12MW-07D 5/14/2001 125 --­ 69 24 320 --­ 3.0 14 180 1.5 6.7 7.0 140 1,359 28 <0.05 19.7 --­

12MW-07S 2/26/2001 100 --­ 12 37 94 --­ 1.5 3.3 84 0.1 6.1 1.5J 82.0 81 <5.0 0.15 17.2 --­

12MW-07S 5/14/2001 80 --­ 15 25 67 --­ 2.0 4.2 110 0.5 6.4 1.4J 69.0 492 <5.0 <0.05 18.5 --­

12MW-07S 8/29/2001 100 --­ 15 40 87 --­ 2.0 4.2 100 0.07 6.5 1.5J 76.0 490 <5.0 <0.05 23.0 --­

12MW-07S 1/13/2004 --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ 7.0 --­ --­ 516 --­ --­ 16.7 --­

12MW-07S 8/19/2004 45 --­ --­ 27 --­ --­ 2.0 --­ --­ <0.05 6.3 --­ --­ 531 --­ <0.05 22.4 3.3 

12MW-07S 5/22/2007 100 --­ --­ 50 --­ --­ 2.0 --­ --­ 0.1 --­ --­ --­ 557 --­ <0.05 --­ --­

12MW-07S 11/28/2007 30 --­ 15 11 110 --­ 0.85 4.8 110 0.1 --­ 1.7 89.5 575 0.74 0.09 18.3 --­

12MW-07S 2/12/2009 35 --­ --­ 18 --­ --­ 1.9 --­ --­ 0.1 6.5 --­ --­ 565 --­ 0.44 18.0 --­

12MW-08D 8/29/2000 --­ --­ --­ 32 --­ --­ 2.5 --­ 130 0.2 7.0 --­ --­ 1,470 11 <0.05 22.9 --­

12MW-08D 11/28/2000 200 --­ 50 18 260 --­ 3.5 8.6 140 0.2 6.6 7.9 170 1,410 13 <0.05 18.5 --­

12MW-08D 2/26/2001 225 --­ 48 30 230 --­ 1.5 8.4 130 1.5 7.1 8.1 220 1,420 10 <0.05 17.7 --­

12MW-08D 5/14/2001 225 --­ 55 26 210 --­ 0.70 9.3 170 1.0 7.0 7.3 240 1,450 11 <0.05 19.9 --­

59 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-08D 8/27/2001 300 --­ 52 27 250 --­ 2.5 9.3 150 0.2 7.0 7.5 240 1,430 10 <0.05 26.3 --­

12MW-08S 8/28/2000 --­ --­ --­ --­ --­ --­ 6.5 --­ 69 0.2 4.4 --­ --­ 1,310 7.6 <0.05 24.9 --­

12MW-08S 11/28/2000 <50 --­ 50 50 390 --­ 4.0 5.2 67 0.6 4.3 0.88J 59 1,270 <5.0 <0.05 17.9 --­

12MW-08S 2/26/2001 <10 --­ 45 --­ 360 --­ 3.0 4.8 58 0.4 5.4 1.1J 160 218 <10 <0.05 16.9 --­

12MW-08S 5/14/2001 <10 --­ 46 160 340 --­ 4.0 4.9 59 0.3 4.3 0.68J 150 1,240 <10 <0.05 18.6 --­

12MW-08S 8/27/2001 <10 --­ 44 210 360 --­ 4.0 5.0 55 0.05 4.7 0.73J 140 1,030 <10 <0.05 23.9 --­

12MW-09D 8/29/2000 --­ --­ --­ 70 --­ --­ 12 --­ 600 0.1 6.4 --­ --­ 3,770 5.4 <0.05 22.2 --­

12MW-09D 11/29/2000 225 --­ 200 50 1,000 --­ 17 41 530 0.2 6.6 14 430 3,450 <5 <0.05 18.3 --­

12MW-09D 2/27/2001 260 --­ 200 100 960 --­ 14 40 560 0.2 6.5 14 430 3,800 <25 <0.05 18.1 --­

12MW-09D 5/15/2001 200 --­ 230 90 800 --­ 18 47 620 0.6 6.6 12 370 3,640 <25 <0.05 18.4 --­

12MW-09D 8/29/2001 250 --­ 250 110 1,000 --­ 15 52 630 0.1 6.4 <0.54 390 3,490 <50 <0.05 22.5 --­

12MW-09D 12/3/2001 250 <1.00 240 40 950 --­ 18 49 580 0.05 6.7 12 390 3,620 <25 <0.05 18.9 --­

12MW-09D 2/26/2002 350 <1.00 250 70 1,000 --­ 23 50 620 <0.05 6.5 11 430 3,740 <25 <0.05 18.6 --­

12MW-09D 6/10/2002 350 3.7 220 70 990 --­ 12 46 570 0.1 6.5 13 440 3,710 <50 <0.05 20.3 --­

12MW-09D 9/10/2002 --­ <4.0 210 112 920 --­ 15 45 560 0.05 6.5 <0.39 400 3,720 <10 <0.05 20.6 --­

12MW-09D 1/7/2003 --­ <1.00 220 100 960 --­ 17 44 560 0.1 6.2 13 420 --­ <25 <0.05 17.7 --­

12MW-09D 4/9/2003 --­ <8.0 210 100 810 --­ 9.0 43 520 0.3 6.6 13 400 3,630 <20 <0.05 16.9 --­

12MW-09D 7/16/2003 250 <5.0 220 120 1,000 --­ 13 47 570 0.1 6.5 12 420 3,620 <13 <0.05 21.6 --­

12MW-09D 8/16/2004 260 --­ --­ 120 1,100 --­ 8.8 --­ --­ --­ 5.9 --­ --­ 3,670 <13 <0.05 20.0 23.7 

12MW-09S 8/29/2000 --­ --­ --­ 80 --­ --­ 2.5 --­ 20 0.2 5.2 --­ --­ 172 21 <0.05 21.3 --­

12MW-09S 11/29/2000 <50 --­ 1.5 50 15 --­ 3.5 0.90 15 0.3 6.2 <0.41 34.0 196 23 <0.05 18.5 --­

12MW-09S 2/27/2001 13 --­ 1.1 100 13 --­ 2.5 0.60 14 0.2 5.2 <0.54 290 166 22 <0.05 16.9 --­

12MW-09S 5/15/2001 44 --­ 1.0 70 12 --­ 3.0 0.76 14 0.4 5.7 <0.54 33.0 200 17 0.10 17.8 --­

12MW-09S 8/29/2001 37 --­ 1.3 130 12 --­ 3.0 0.79 15 0.1 5.6 <0.54 27.0 171 20 <0.05 22.4 --­

12MW-09S 12/3/2001 19 <0.20 1.2 150 14 --­ 3.5 0.8 15 <0.05 5.4 <0.54 23.0 161 26 <0.05 19.9 --­

12MW-09S 2/26/2002 40 <0.20 1.2 130 10 --­ 4.0 0.88 15 0.2 5.6 <0.54 28.0 154 24 --­ 18.2 --­

12MW-09S 6/10/2002 <10 <0.50 0.96 150 11 --­ 3.5 0.71 12 0.05 5.2 <0.39 25.0 141 27 <0.05 20.5 --­

12MW-09S 9/10/2002 32 <0.40 1.1 130 8.4 --­ 2.5 0.77 16 0.05 5.8 <0.39 29.0 187 18 0.08 23.1 --­

12MW-09S 1/7/2003 65 <0.40 2.1 140 47 0.5 8.9 2.2 33 <0.05 6.0 0.52J 72.0 411 8.7 2.5 16.3 --­

12MW-09S 4/8/2003 70 <0.40 1.8 120 26 --­ 6.0 2.2 33 <0.05 6.1 <0.48 55.0 346 20 0.90 15.7 --­

12MW-09S 7/15/2003 45 <0.20 1.0 160 16 --­ 5.5 1.1 18 <0.05 5.6 <0.48 35.0 219 20 0.05 20.0 --­

12MW-09S 9/17/2003 70 --­ 1.2 140 16 --­ 7.0 1.2 19 0.2 5.7 0.49J 48.0 312 19 0.30 22.2 --­

12MW-09S 1/13/2004 20 --­ 0.96 35 12 --­ 6.0 0.87 14 0.1 5.5 <0.48 18.0 172 24 <0.05 15.7 4.9 

12MW-09S 4/28/2004 20 --­ 1.3 110 12 2.1 5.0 1.1 24 0.1 5.2 0.73J 20.0 150 26 <0.05 16.9 42 

12MW-09S 8/16/2004 --­ --­ 1.8 130 10 --­ 6.3 2.5 45 --­ 4.9 1.4J 25.0 145 26 <0.05 20.5 429 

12MW-09S 5/25/2005 <10 --­ 0.74 32 11 --­ 2.0 0.63 8.8 0.1 5.7 <0.36 20.0 143 29 <0.05 17.4 3.4 

12MW-09S 1/31/2006 --­ --­ --­ --­ 24 --­ 1.4 --­ --­ 0.5 5.2 --­ --­ 169 30 --­ 16.5 19.8 

12MW-09S 6/22/2006 <10 --­ --­ 120 10 --­ 1.5 --­ --­ 0.1 5.0 --­ --­ 120 23 <0.05 19.5 --­

12MW-09S 9/12/2006 <10 --­ --­ 110 10 --­ 2.0 --­ --­ 0.1 4.8 --­ --­ 124 23 <0.05 20.5 --­

12MW-09S 5/22/2007 <10 --­ --­ 120 7.5 --­ 1.5 --­ --­ 0.3 --­ --­ --­ 114 22 <0.05 --­ --­

12MW-09S 11/28/2007 <10 --­ 0.60 14 8.1 --­ 0.50 0.55 8.8J 0.2 5.0 0.31 19.5 112 20 0.25 18.5 --­

12MW-09S 2/12/2009 <10 --­ --­ 25 19 --­ 1.7 --­ --­ 0.2 5.1 --­ --­ 114 20 <0.2 17.8 --­

12MW-10S 11/30/2000 <50 --­ 3.1 300 120 --­ 38 8.5 49 0.4 4.5 <0.41 --­ 496 <5.0 <0.05 22.5 --­

12MW-10S 2/28/2001 <10 --­ 4.3 300 100 --­ 60 13 110 <0.05 4.4 1.4J 35.0 613 <5.0 0.20 17.9 --­

12MW-10SR 5/16/2001 --­ --­ 2.5 --­ 89 --­ --­ 6.8 33 --­ --­ <0.54 32.0 --­ <5.0 --­ --­ --­

12MW-10SR 8/29/2001 --­ --­ 2.2 --­ 92 --­ --­ 5.8 34 --­ --­ <0.54 32.0 --­ <5.0 --­ --­ --­

12MW-10SR 12/5/2001 --­ <2.0 2.6 --­ 110 --­ --­ 7.1 40 --­ --­ 0.66J 44.0 --­ <5.0 --­ --­ --­

12MW-10S 2/27/2002 <10 <1.0 2.6 250 100 --­ 23 6.4 28 <0.05 4.6 <0.54 38.0 357 3.4 0.80 15.4 --­

12MW-10SR 2/27/2002 --­ <1.0 2.6 --­ 100 --­ --­ 6.3 29 --­ --­ <0.54 36.0 --­ 4.1 --­ --­ --­

12MW-10S 6/11/2002 <10 <0.50 1.4 250 73 2.4 2.5 3.8 15 0.4 3.9 <0.39 32.0 250 <5.0 <0.05 26.6 --­

12MW-10S 9/10/2002 <10 <1.0 1.1 250 64 2.9 18 3.2 21 <0.05 4.5 <0.39 28.0 259 3.9 0.20 27.0 --­

60 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-10S 1/8/2003 <10 <1.0 1.9 275 95 4.4 27 4.8 40 <0.05 4.6 <0.39 28.0 325 8.2 0.80 18.2 --­

12MW-10S 4/10/2003 <10 <0.80 1.4 245 69 --­ 12 3.1 16 0.1 4.7 <0.48 27.0 193 10 0.90 15.5 --­

12MW-10S 7/16/2003 <10 <0.40 2.1 260 67 5.8 12 4.3 14 0.1 4.7 <0.48 30.0 275 7.8 0.50 25.0 --­

12MW-10S 9/16/2003 <10 --­ 1.2 270 53 3.9 5.0 2.6 15 0.1 4.7 <0.48 24.0 193 7.7 0.80 25.8 53 

12MW-10S 1/14/2004 <10 --­ 1.7 130 41 2.8 8.0 2.5 14 0.1 4.7 <0.48 16.0 186 10 0.40 18.4 12.4 

12MW-10S 4/27/2004 --­ --­ --­ --­ --­ 16 --­ --­ --­ --­ 4.9 --­ --­ 171 --­ --­ 18.6 --­

12MW-10S 8/18/2004 <10 --­ 1.1 20 40 3.1 8.1 2.6 12 0.1 4.6 0.62J 22.0 162 9.9 0.05 24.6 12.4 

12MW-10S 2/2/2005 <10 --­ 1.1 90 32 --­ 5.5 2.4 --­ 0.2 4.8 <0.53 19.0 147 11 0.70 15.4 9.1 

12MW-10S 2/3/2005 --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­

12MW-10S 5/24/2005 <10 --­ 2.9 240 75 3.5 10 5.7 12 0.05 4.6 <0.36 31.0 303 10 0.35 21.2 --­

12MW-10S 9/13/2005 <10 --­ 2.7 270 77 --­ 7.6 5.5 12 0.05 4.7 <0.36 29.0 249 7.3 0.90 25.4 2.9 

12MW-10S 1/31/2006 --­ --­ --­ --­ 29 --­ 3.7 --­ --­ <0.05 --­ --­ --­ 159 11 --­ 19.4 9.2 

12MW-10S 6/21/2006 <10 --­ 3.8 270 80 --­ 10 7.2 --­ 0.1 4.6 --­ --­ 342 9.2 0.25 24.4 --­

12MW-10S 9/12/2006 <10 --­ --­ 70 33 --­ 5.0 --­ --­ 0.2 4.7 --­ --­ 163 10 0.80 24.0 --­

12MW-10S 5/22/2007 <10 --­ --­ 70 130 --­ 20 --­ --­ 0.05 4.7 --­ --­ 723 6.2 0.90 20.9 --­

12MW-10S 7/16/2007 <10 --­ --­ 160 23 --­ 1.5 --­ --­ 1.0 4.8 --­ --­ 138 22 <0.05 24.4 --­

12MW-10S 11/27/2007 <10 --­ --­ 25 46 --­ 3.9 --­ --­ 0.4 5.0 --­ --­ 242 11 1.3 18.4 --­

12MW-10S 5/6/2008 <10 --­ --­ 50 24 --­ 5.0 --­ --­ 0.2 4.7 --­ --­ 151 15 0.33 22.7 --­

12MW-10S 9/1/2009 25 --­ --­ 40 14 --­ 1.8 --­ --­ >1 5.3 --­ --­ 150 16 5.5 23.0 --­

12MW-11D 8/29/2000 --­ --­ --­ 120 --­ --­ 16 --­ 370 0.05 6.1 --­ --­ 3,070 38 <0.05 19.9 --­

12MW-11D 11/29/2000 150 --­ 150 55 880 --­ 18 33 520 <0.05 6.3 7.4 330 3,050 47 <0.05 18.6 --­

12MW-11D 2/27/2001 135 --­ 160 60 910 --­ 12 33 440 0.7 6.1 6.7 400 3,170 38 <0.05 17.4 --­

12MW-11D 5/15/2001 130 --­ 160 90 780 --­ 13 37 530 0.3 6.3 6.5 390 3,290 <25 <0.05 21.4 --­

12MW-11D 8/28/2001 130 --­ 170 160 900 --­ 17 39 590 <0.05 6.2 6.2 360 3,240 <40 <0.05 25.1 --­

12MW-11D 12/4/2001 115 <1.0 180 120 920 --­ 23 43 710 <0.05 6.3 6.7 350 3,520 57 <0.05 18.9 --­

12MW-11D 2/27/2002 135 <1.0 180 30 940 --­ 16 44 680 0.05 6.2 7.3 430 3,370 57 <0.05 14.8 --­

12MW-11D 6/10/2002 130 3.7 170 75 1,000 --­ 23 41 720 0.5 6.0 7.3 400 3,600 68 <0.05 21.8 --­

12MW-11D 9/9/2002 175 <8.0 160 60 840 --­ 18 36 520 --­ 6.1 7.1 410 3,320 37 --­ 22.4 --­

12MW-11D 1/8/2003 125 <8.0 150 32 840 0.10 10 31 420 0.1 6.1 6.9 430 3,130 39 <0.05 15.8 --­

12MW-11D 4/9/2003 150 <8.0 150 70 800 --­ 5.5 31 410 0.3 6.4 6.4 400 3,010 41 <0.05 16.8 --­

12MW-11D 7/16/2003 165 <5.0 160 13 940 --­ 15 35 500 0.05 6.2 5.6 390 3,230 43 <0.05 22.8 --­

12MW-11S 8/29/2000 --­ --­ --­ 70 --­ --­ 3.5 --­ 80 0.2 5.8 --­ --­ 1,100 5.6 --­ 21.3 --­

12MW-11S 11/29/2000 175 --­ 35 70 330 --­ 3.5 11 130 0.8 6.3 2.5 160 1,630 8.4 <0.05 18.5 --­

12MW-11SR 11/29/2000 --­ --­ 32 --­ 330 --­ --­ 10 120 --­ --­ 2.6 230 --­ 9.2 --­ --­ --­

12MW-11S 2/27/2001 90 --­ 46 75 380 --­ 3.5 14 160 0.4 5.9 2.9 240 1,670 <25 <0.05 16.7 --­

12MW-11S 5/15/2001 110 --­ 47 100 360 --­ 6.5 15 170 0.9 6.1 2.3 230 1,840 <25 <0.05 19.9 --­

12MW-11S 8/28/2001 105 --­ 34 70 310 --­ 3.0 11 120 0.05 6.1 2.3 190 1,470 <10 <0.05 23.5 --­

12MW-11S 1/8/2003 90 --­ --­ 50 --­ 1.0 0.50 --­ --­ 0.3 5.9 --­ --­ 1,650 --­ <0.05 15.2 --­

12MW-11S 8/19/2004 125 --­ --­ 50 380 --­ 5.0 --­ --­ 0.2 6.1 --­ --­ 1,680 8.1J <0.05 22.7 85.5 

12MW-11S 5/23/2005 100 --­ --­ 30 --­ --­ 4.0 --­ --­ 0.2 7.1 --­ --­ 1,350 --­ <0.05 19.3 --­

12MW-11S 6/20/2006 65 --­ --­ 40 --­ --­ 4.5 --­ --­ 0.2 6.1 --­ --­ 1,600 --­ <0.05 20.7 --­

12MW-11S 5/22/2007 90 --­ --­ 22 --­ --­ 3.0 --­ --­ 0.1 6.1 --­ --­ 1,260 --­ <0.05 19.3 --­

12MW-11S 7/20/2009 80 --­ --­ 20 --­ --­ 6.1 --­ --­ <0.02 --­ --­ --­ --­ --­ 0.32 --­ --­

12MW-12D 8/28/2001 175 --­ 100 12 490 --­ 0.20 22 290 0.4 7.2 5.9 260 2,030 70 <0.05 24.6 --­

12MW-12D 8/18/2004 150 --­ --­ 35 860 --­ 10 --­ --­ 0.1 6.3 --­ --­ 3,070 49 <0.05 22.8 3.3 

12MW-12D 7/16/2007 150 --­ --­ 30 --­ --­ 10 --­ --­ 0.1 6.3 --­ --­ 2,200 --­ <0.05 21.0 --­

12MW-12S 8/28/2001 80 --­ 20 150 190 --­ 1.5 6.4 78 0.2 5.8 1.6J 130 919 <10 <0.05 23.5 --­

12MW-12S 12/4/2001 85 <4.0 19 150 220 1.4 0.80 7 71 0.4 6.2 1.8J 140 976 <10 <0.05 19.6 --­

12MW-12S 2/27/2002 95 <4.0 36 35 290 --­ 0.20 11 130 0.3 6.3 2.7 200 1,380 11 <0.05 13.6 --­

12MW-12S 6/10/2002 120 1.1 32 75 290 1.9 1.5 9.4 110 0.2 6.1 2.2 180 1,190 <10 <0.05 21.8 --­

12MW-12S 9/9/2002 125 <2.0 32 60 290 --­ 1.5 9.6 120 0.2 6.1 2.3 180 1,180 8.4 <0.05 22.5 --­

61 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-12S 1/8/2003 115 <2.0 28 50 230 2.4 0.35 8.3 97 0.7 6.3 2.5 180 1,200 7.6 <0.05 13.3 --­

12MW-12S 4/10/2003 110 <2.0 27 60 220 1.6 0.25 7.9 93 0.4 5.8 1.9 160 1,080 16 <0.05 14.7 --­

12MW-12S 4/26/2004 125 --­ --­ 40 --­ 2.6 2.0 --­ --­ 0.3 6.3 --­ --­ 1,250 --­ <0.05 18.3 --­

12MW-12S 8/17/2004 110 --­ 29 40 250 --­ 1.0 8.6 100 <0.05 6.1 2.5 170 1,120 6.7 <0.05 21.7 --­

12MW-12S 2/1/2005 100 --­ 31 22 260 2.4 1.0 9.1 --­ 0.4 5.8 2.1 190 1,170 6.7J <0.05 16.5 31.2 

12MW-12S 5/24/2005 120 --­ 27 110 220 2.1 0.90 7.9 92 0.1 6.0 1.7 180 964 5.9 <0.05 17.6 40.7 

12MW-12S 9/12/2005 --­ --­ 24 --­ 220 --­ --­ 7.4 83 --­ --­ 2.1 140 --­ 6.4 --­ --­ --­

12MW-12S 9/16/2005 100 --­ --­ 24 --­ --­ 0.75 --­ --­ 0.2 6.3 --­ --­ 1,020 --­ <0.05 21.7 3.8 

12MW-12S 1/30/2006 --­ --­ --­ --­ 200 --­ 0.30 --­ --­ 0.5 6.5 --­ --­ 968 5.1J --­ 17.8 11.7 

12MW-12S 6/20/2006 105 --­ --­ 45 230 --­ 1.0 --­ --­ 0.1 6.2 --­ --­ 1,050 6.7 <0.05 20.5 --­

12MW-12S 9/11/2006 100 --­ --­ 32 200 --­ 1.0 --­ --­ 0.1 6.2 --­ --­ 1,000 6.8 <0.05 22.0 --­

12MW-12S 5/22/2007 125 --­ --­ 35 200 --­ 2.0 --­ --­ 0.2 6.3 --­ --­ 1,050 6.8 <0.05 19.3 --­

12MW-12S 7/16/2007 110 --­ --­ 23 190 --­ 1.7 --­ --­ 0.05 6.3 --­ --­ 1,050 6.8 <0.05 20.6 --­

12MW-12S 11/26/2007 80 --­ --­ 25 190 --­ 0.07 --­ --­ 0.4 6.1 --­ --­ 964 6.3 0.065 20.7 --­

12MW-12S 5/6/2008 70 --­ --­ 20 180 --­ 0.64 --­ --­ 0.1 6.1 --­ --­ 900 6.0 <0.6 18.0 --­

12MW-12S 2/11/2009 70 --­ --­ 15 180 --­ 1.3 --­ --­ 0.1 6.3 --­ --­ 897 6.2 0.345 17.9 --­

12MW-12S 7/20/2009 100 --­ --­ 25 190 --­ 0.9 --­ --­ 0.1 6.0 --­ --­ 916 6.9 <0.2 21.1 --­

12MW-13S 8/28/2001 <10 --­ 24 100 320 --­ 9.0 14 150 0.2 4.9 1.9J 140 1,140 18 <0.05 23.1 --­

12MW-13S 12/4/2001 <20 <4.0 32 160 370 0.6 12 18 190 <0.05 5.5 2.2 160 1,390 22 <0.05 17.6 --­

12MW-13S 2/26/2002 <10 <5.0 35 140 400 --­ 8.0 20 190 1.50 4.9 2.4 200 1,400 34 <0.05 17.6 --­

12MW-13S 6/11/2002 <10 1.5 30 190 370 0.5 11 17 170 <0.05 5.2 2.4 180 1,460 28 <0.05 20.3 --­

12MW-13S 9/10/2002 <10 <4.0 26 200 360 0.46 12 16 160 <0.05 5.0 2.1 170 1,420 26 <0.05 21.8 --­

12MW-13S 1/7/2003 <10 <4.0 19 150 310 0.9 4.4 12 120 1.5 4.7 1.7 170 1,110 27 <0.05 14.7 --­

12MW-13S 4/8/2003 <10 <2.0 18 150 280 8.0 6.0 11 120 0.2 5.0 1.5J 150 1,070 16 <0.05 15.5 --­

12MW-13S 7/15/2003 <10 1.1J 16 210 280 4.4 7.0 10 110 0.1 5.1 1.2J 110 1,010 18 <0.05 21.1 --­

12MW-13S 9/15/2003 <10 --­ 4.8 180 280 1.4 8.0 9.7 99 0.05 4.9 1.8 140 1,030 20 <0.05 22.7 --­

12MW-13S 1/13/2004 <10 --­ 20 160 300 5.9 5.5 12 130 0.7 4.8 2.2 140 1,130 20 <0.05 15.9 8.5 

12MW-13S 4/28/2004 <10 --­ 18 40 270 180 8.0 11 120 <0.05 4.8 1.9 120 1,050 17 <0.05 16.7 2.8 

12MW-13S 8/17/2004 <10 --­ 18 170 290 1.5 7.0 12 120 <0.05 4.8 1.9 150 1,070 18 <0.05 21.8 --­

12MW-13S 2/2/2005 <10 --­ 20 30 300 1.3 6.0 12 --­ 0.3 5.0 1.4J 170 1,080 17 <0.05 16.4 --­

12MW-13S 5/24/2005 <10 --­ 19 170 300 1.1 4.5 11 120 0.1 4.8 1.5 160 1,060 17 <0.05 19.9 --­

12MW-13SR 5/24/2005 --­ --­ 19 --­ 300 --­ --­ 11 120 --­ --­ 1.4 160 --­ 17 --­ --­ --­

12MW-13S 9/12/2005 --­ --­ 17 --­ 230 --­ --­ 9.9 100 --­ --­ 1.6 130 --­ 12 --­ --­ --­

12MW-13SR 9/12/2005 --­ --­ 17 --­ 190 --­ --­ 10 110 --­ --­ 1.6 120 --­ 14 --­ --­ --­

12MW-13S 9/16/2005 <10 --­ --­ 70 --­ --­ 6.6 --­ --­ 0.1 5.2 --­ --­ 1,020 --­ <0.05 22.0 20 

12MW-13S 1/30/2006 --­ --­ --­ --­ 270 --­ 5.5 --­ --­ 0.6 5.1 --­ --­ 1,010 13 --­ 17.0 16 

12MW-13SR 1/30/2006 --­ --­ --­ 270 --­ --­ --­ --­ --­ --­ --­ --­ --­ 14 --­ --­ --­

12MW-13S 6/22/2006 <10 --­ 19 45 270 --­ 10 12 120 <0.05 5.1 --­ 120 1,090 16 0.05 20.1 --­

12MW-13S 9/11/2006 25 --­ --­ 45 300 --­ 8.0 --­ --­ 0.2 5.1 --­ --­ 2,230 16 <0.05 22.2 --­

12MW-13SR 9/11/2006 --­ --­ --­ 310 --­ --­ --­ --­ --­ --­ --­ --­ 19 --­ --­ --­

12MW-13S 5/21/2007 <10 --­ --­ 50 310 --­ 9.0 --­ --­ 0.1 5.0 --­ --­ 1,210 21 <0.05 19.2 --­

12MW-13SR 5/21/2007 --­ --­ --­ --­ 310 --­ --­ --­ --­ --­ --­ --­ --­ --­ 21 --­ --­ --­

12MW-13S 7/16/2007 <10 --­ --­ 50 310 --­ 8.7 --­ --­ 0.2 5.0 --­ --­ 1,250 21 <0.05 30.2 --­

12MW-13SR 7/16/2007 --­ --­ --­ --­ 310 --­ --­ --­ --­ --­ --­ --­ --­ --­ 21 --­ --­ --­

12MW-13S 8/22/2007 --­ --­ --­ --­ 320 --­ --­ --­ --­ --­ --­ --­ --­ --­ 22 --­ --­ --­

12MW-13S 11/27/2007 <10 --­ --­ 25 310 --­ 7.5 --­ --­ 0.05 4.4 --­ --­ 1,240 22 0.184 18.5 --­

12MW-13SR 11/27/2007 --­ --­ --­ --­ 310 --­ --­ --­ --­ --­ --­ --­ --­ --­ 22 --­ --­ --­

12MW-13S 5/5/2008 <10 --­ 22 40 300 --­ 6.3 14 141 0.2 4.8 2.0 164 1,210 20 <0.6 17.7 --­

12MW-13S 8/14/2008 <10 --­ --­ 28 390 --­ 7.1 --­ --­ 0.05 4.9 --­ --­ 1,320 26 0.07 21.4 --­

12MW-13SR 8/14/2008 --­ --­ --­ --­ 390 --­ --­ --­ --­ --­ --­ --­ --­ --­ 26 --­ --­ --­

12MW-13S 2/11/2009 <10 --­ --­ 30 340 --­ 6.6 --­ --­ 0.2 4.9 --­ --­ 1,290 24 <0.2 17.6 --­

62 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-13SR 2/11/2009 --­ --­ --­ --­ 340 --­ --­ --­ --­ --­ --­ --­ 24 --­ --­ --­

12MW-13S 7/20/2009 110 --­ --­ <10 350 --­ 5.4 --­ --­ <0.02 4.7 --­ --­ 1,220 6.6 <0.2 20.8 --­

12MW-13SR 7/20/2009 --­ --­ --­ --­ 360 --­ --­ --­ --­ --­ --­ --­ --­ --­ 28 --­ --­ --­

12MW-13S 9/1/2009 <10 --­ --­ 50 400 --­ 8.9 --­ --­ <0.02 5.2 --­ --­ 1,260 32 0.7 21.1 --­

12MW-13SR 9/1/2009 --­ --­ --­ --­ 390 --­ --­ --­ --­ --­ --­ --­ --­ --­ 32 --­ --­ --­

12MW-14S 8/30/2001 30 --­ 54 100 830 --­ 12 41 940 1.5 --­ 4.4 490 --­ 29 <0.05 --­ --­

12MW-17S 9/10/2002 112 <2.0 63 100 420 1.1 5.5 18 220 <0.05 6.2 3 220 1,820 15 <0.05 21.4 --­

12MW-17S 1/7/2003 125 <2.0 69 33 450 0.9 3.5 19 240 0.3 6.0 3.5 250 1,920 22 <0.05 15.7 --­

12MW-17S 4/9/2003 125 <2.0 74 75 470 1.9 5.1 19 250 0.2 6.0 3.1 250 1,980 20 <0.05 16.0 --­

12MW-17S 7/15/2003 140 <2.5 79 90 490 2.0 7.5 21 270 0.1 6.6 3.4 260 2,000 23 <0.05 20.6 --­

12MW-17S 9/15/2003 115 --­ 75 70 450 1.8 --­ 20 260 0.2 6.2 3.6 250 1,990 18 <0.05 21.5 2.6 

12MW-17S 1/13/2004 120 --­ 75 30 480 1.9 6.0 20 270 0.7 6.2 3.7 200 1,840 18 <0.05 17.3 5.7 

12MW-17S 4/26/2004 130 --­ 75 1,100 480 2.9 6.0 20 260 0.1 6.3 3.4 200 1,820 19 <0.05 17.0 --­

12MW-17S 8/17/2004 135 --­ 85 110 570 1.2 7.6 23 300 <0.05 6.1 4.1 280 2,080 20J <0.05 20.6 --­

12MW-17S 2/1/2005 100 --­ 77 20 490 --­ 8.0 21 --­ 0.4 6.4 3.2 290 1,990 21 <0.05 16.6 11.6 

12MW-17S 5/24/2005 --­ --­ --­ --­ --­ 2.5 --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­

12MW-17S 5/24/2005 110 --­ 75 120 490 --­ 9.0 21 270 0.1 6.5 3.4 290 1,870 21 <0.05 18.0 32.5 

12MW-17S 9/12/2005 --­ --­ 67 --­ 470 --­ --­ 20 240 --­ --­ 3.5 210 --­ 20 --­ --­ --­

12MW-17S 9/16/2005 100 --­ --­ 35 --­ --­ 6.2 --­ --­ <0.05 6.3 --­ --­ 1,830 --­ <0.05 21.3 39.5 

12MW-17S 1/31/2006 --­ --­ --­ --­ 410 --­ 6.0 --­ --­ 0.2 6.4 --­ --­ 1,720 19 --­ 17.8 15.9 

12MW-17S 6/20/2006 110 --­ --­ 25 530 --­ 9.0 --­ --­ 0.2 6.2 --­ --­ 2,050 21 <0.05 19.7 --­

12MW-17S 9/11/2006 120 --­ --­ 27 500 --­ 10 --­ --­ <0.05 6.2 --­ --­ 1,990 22 <0.05 21.2 --­

12MW-17S 5/22/2007 100 --­ --­ 32 470 --­ 0.8 --­ --­ 0.1 6.2 --­ --­ 1,990 21 <0.05 18.6 --­

12MW-17S 11/26/2007 130 --­ --­ 100 410 --­ 7.7 --­ --­ 0.1 6.2 --­ --­ 1,740 19 0.08 20.9 --­

12MW-17S 5/6/2008 70 --­ --­ 17 380 --­ 6.0 --­ --­ 0.05 6.3 --­ --­ 1,690 18 <0.6 18.3 --­

12MW-17S 2/11/2009 100 --­ --­ 15 400 --­ 3.9 --­ --­ <0.02 6.3 --­ --­ 1,770 19 <0.2 18.8 --­

12MW-17S 7/20/2009 --­ --­ --­ --­ 420 --­ --­ --­ --­ --­ 6.1 --­ --­ 1,660 18 --­ 20.3 --­

12MW-18S 4/9/2003 70 <0.60 6.7 250 38 --­ 5.9 2.1 50 0.2 5.1 0.49J 52.0 303 7.9 2.5 16.6 --­

12MW-18S 7/16/2003 50 0.42J 5.2 250 36 --­ 3.5 1.8 29 <0.05 5.5 0.63J 42.0 283 15 0.60 22.2 --­

12MW-18S 9/17/2003 45 --­ 4.3 220 32 --­ 2.5 1.6 22 <0.05 5.3 0.77J 46.0 246 13 0.50 21.6 0.7 

12MW-18S 1/14/2004 35 --­ 4 180 33 --­ 1.5 1.5 20 0.3 6.1 0.48J 32.0 266 16 0.15 18.0 --­

12MW-18S 4/27/2004 50 --­ 4.1 220 31 --­ 2.5 1.6 19 0.1 5.5 0.95J 38.0 284 18 0.05 19.9 14.5 

12MW-18S 8/19/2004 <10 --­ 4.9 350 26 --­ 2.5 1.9 21 0.05 5.2 1.2J 48.0 277 15 0.15 22.9 --­

12MW-18S 2/3/2005 50 --­ 7.5 300 30 --­ 1.5 2.7 --­ 0.3 5.6 1.3J 55.0 341 11 0.05 17.2 5.6 

12MW-18S 5/23/2005 70 --­ --­ 270 38 --­ 2.0 --­ --­ 0.1 5.4 --­ --­ 328 12 0.10 21.6 2.7 

12MW-18S 9/12/2005 65 --­ --­ 220 42 --­ 1.5 --­ --­ 0.1 5.6 --­ --­ 351 9.9 0.10 23.4 --­

12MW-18S 1/31/2006 --­ --­ --­ --­ 43 --­ 1.0 --­ --­ 0.2 5.9 --­ --­ 332 10 --­ 15.8 --­

12MW-18S 6/20/2006 40 --­ --­ 210 51 --­ 1.5 --­ --­ 0.2 5.5 --­ --­ 329 10 <0.05 24.2 --­

12MW-18S 9/11/2006 45 --­ --­ 250 53 --­ 1.5 --­ --­ 0.1 5.2 --­ --­ 317 11 <0.05 25.1 --­

12MW-18S 5/22/2007 <10 --­ --­ 350 56 --­ 2.5 --­ --­ 0.2 5.4 --­ --­ 341 8.1 <0.05 20.8 --­

12MW-18S 7/16/2007 40 --­ --­ 300 55 --­ 2.0 --­ --­ 0.1 5.4 --­ --­ 333 7.7 <0.05 23.2 --­

12MW-18S 11/26/2007 <10 --­ --­ 350 54 --­ 1.9 --­ --­ 0.05 5.6 --­ --­ 336 7.0 0.07 22.9 --­

12MW-18S 5/5/2008 <10 --­ 6.9 350 56 --­ 2.5 3.0 29 0.05 5.4 1.1 51.3 354 7.6 0.048 20.5 --­

12MW-18S 2/10/2009 <10 --­ --­ 350 56 --­ 1.1 --­ --­ 0.1 5.3 --­ --­ 359 8 <0.2 19.4 --­

12MW-18S 7/20/2009 50 --­ 9.1 --­ 58 --­ 1.1 <5 33 0.05 --­ --­ --­ --­ 9.4 <0.2 --­ --­

12MW-19D 4/8/2003 200 <0.80 120 10 75 --­ 14 11 2,400 0.2 6.6 11 390 1,920 <2.0 <0.05 17.4 --­

12MW-19D 4/27/2004 150 --­ 27 <10 140 --­ 1.0 0.80 73 <0.05 8.4 5.3 230 1,220 <2.5 <0.05 20.6 30.2 

12MW-19D 8/16/2004 135 --­ 16 <10 140 43,000 0.2 0.30 24 <0.05 9.2 3.8 190 969 <2.0 <0.05 23.2 3.6 

12MW-19S 4/8/2003 190 <0.80 130 <10 70 --­ 13 12 2,700 <0.05 7.0 11 330 1,890 <2.0 <0.05 16.8 --­

12MW-19S 7/14/2003 130 1.7 120 <10 28 300,000 1.5 10 370 0.05 8.2 7.1 380 1,780 0.5 <0.05 22.5 --­

63 
 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-19S 9/17/2003 300 --­ 130 <10 31 310,000 0.7 9.1 260 0.05 7.8 10 320 1,870 2.8 <0.05 23.8 3.4 

12MW-19S 1/14/2004 110 --­ 66 <10 37 290,000 0.05 4.1 130 0.1 8.9 5.4 140 991 <0.5 <0.05 18.6 2.3 

12MW-19S 4/27/2004 60 --­ 50 <10 33 --­ <0.05 2.7 70 0.05 9.2 4.6 100 778 <0.75 <0.05 19.5 7 

12MW-19S 8/19/2004 50 --­ 35 <10 33 --­ <0.05 1.7 61 <0.05 9.3 3.6 66.0 503 <0.50 <0.05 23.8 5.1 

12MW-19S 2/2/2005 33 --­ 16 <10 44 250,000 <0.05 0.52 --­ <0.05 10.0 2 52.0 400 <0.5 <0.05 16.5 --­

12MW-19S 5/25/2005 30 --­ 14 <10 45 260,000 <0.05 0.56 17 0.05 8.9 1.8 42.0 326 <0.75 <0.05 18.7 --­

12MW-19S 9/13/2005 21 --­ 9.4 <10 51 --­ <0.05 0.40 15 0.1 9.3 1.9 34.0 272 1.0J <0.05 23.4 --­

12MW-19S 1/31/2006 --­ --­ --­ --­ 45 --­ <0.05 --­ --­ 0.1 9.5 --­ --­ 255 <0.75 --­ 18.2 --­

12MW-19S 9/12/2006 22 --­ --­ <10 40 --­ 0.10 --­ --­ 0.1 9.4 --­ --­ 199 <0.75 <0.05 23.2 --­

12MW-20D 4/8/2003 200 <2.0 31 14 200 --­ 1.5 6.5 90 0.2 7.1 4.8 170 1,050 <5.0 <0.05 17.5 --­

12MW-20D 7/15/2003 200 <1.0 45 25 290 --­ 1.5 9.1 100 0.3 6.9 5.3 210 1,320 4.4J 0.05 22.3 --­

12MW-20D 9/16/2003 175 --­ 46 30 300 --­ 1.5 9.3 99 0.05 6.8 5.8 220 1,390 <5.0 0.10 22.2 1.4 

12MW-20D 1/12/2004 175 --­ 52 25 380 --­ 1.5 10 120 0.1 6.8 6.3 200 1,440 <6.3 <0.05 18.5 2 

12MW-20D 4/26/2004 200 --­ 55 30 320 --­ 1.5 11 120 0.2 6.9 6.6 180 1,460 <5.0 0.05 20.8 5.5 

12MW-20D 8/16/2004 150 --­ 59 20 340 --­ 1.0 12 130 0.2 6.9 7 220 1,570 4.0J 0.30 23.0 --­

12MW-20D 5/25/2005 250 --­ 47 24 280 --­ 0.90 9.3 96 0.2 7.0 5.8 250 1,360 <5 0.10 20.3 --­

12MW-20D 6/21/2006 185 --­ 44 30 250 --­ 0.70 8.7 91 0.1 6.8 --­ 170 1,280 <2.5 <0.05 22.9 --­

12MW-20D 2/12/2009 200 --­ 27 20 180 --­ 0.3 6 58 0.15 7.0 4.5 172 1,010 0.53 <0.2 18.9 --­

12MW-20S 4/9/2003 40 <0.60 7.5 250 45 --­ 0.85 2.6 36 0.1 5.1 0.93J 54.0 310 15 0.05 16.8 --­

12MW-20S 7/16/2003 50 0.85 43 320 41 --­ 18 16 230 <0.05 5.4 1.4J 100 835 2.2 0.60 21.5 --­

12MW-20S 9/16/2003 <10 --­ 62 320 39 --­ 35 26 340 <0.05 5.2 2.0 170 1,100 2.0 0.80 22.9 5.5 

12MW-20S 1/14/2004 180 --­ 44 250 40 --­ 38 19 250 <0.05 5.9 1.3J 160 1,030 <0.5 <0.05 18.2 13.8 

12MW-20S 4/26/2004 260 --­ 26 270 41 --­ 23 11 150 0.1 6.2 0.98J 130 793 1.0J 0.60 19.0 19.8 

12MW-20S 8/19/2004 225 --­ 16 200 45 --­ 15 6.9 91 0.1 6.0 1.0J 130 700 <0.75 0.15 22.4 24.5 

12MW-20S 2/2/2005 175 --­ 8.4 35 53 --­ 7.5 3.4 --­ 0.05 6.5 <0.53 100 527 4.6 <0.05 16.9 24.1 

12MW-20S 5/25/2005 130 --­ 9.7 50 68 --­ 5.5 3.1 44 0.05 6.4 <0.36 96.0 572 1.0J <0.05 20.0 --­

12MW-20S 9/13/2005 102 --­ 8.0 50 61 --­ 4.0 3.2 43 <0.05 6.4 0.39J 85.0 448 2.4 0.10 22.8 --­

12MW-20S 1/31/2006 --­ --­ --­ --­ 47 --­ 2.0 --­ --­ 0.1 6.1 --­ --­ 314 8.7 --­ 18.8 --­

12MW-20S 6/22/2006 35 --­ 2.8 25 44 --­ 2.5 1.1 16 <0.05 6.2 --­ 47.0 296 2.7 <0.05 21.3 --­

12MW-20S 9/11/2006 60 --­ --­ 30 57 --­ 2.5 --­ --­ --­ 6.0 --­ --­ 327 4.4 <0.05 23.3 --­

12MW-20S 5/23/2007 50 --­ 2.1 27 49 --­ 2.2 1.0 13 <0.05 6.3 0.33 52.2 269 2.3 <0.05 19.7 --­

12MW-20S 11/28/2007 30 --­ 3.4 0.21 82 --­ 2.4 1.5 20 <0.05 6.6 0.46 64.1 379 2.9 0.14 20.5 --­

12MW-20S 2/12/2009 32 --­ 3.6 17 78 --­ 1.9 1.58 20 0.02 7.0 0.4 65.8 1,020 3 <0.2 19.0 --­

12MW-21D 4/7/2003 150 <0.80 100 40 79 --­ 48 15 1,900 0.1 6.7 10 370 1,950 <2.0 0.10 19.9 --­

12MW-21D 7/15/2003 500 0.70J 95 60 71 4,100 18 15 750 <0.05 7.0 9.2 380 1,950 <1.0 <0.05 23.2 --­

12MW-21D 9/16/2003 350 --­ 88 50 65 12,000 15 12 570 <0.05 7.2 9.8 370 1,850 <1.0 <0.05 23.8 18.8 

12MW-21D 1/12/2004 250 --­ 71 33 71 46,000 9 9.3 320 <0.05 7.4 9.3 260 1,670 <1.3 <0.05 18.6 28.9 

12MW-21D 4/27/2004 325 --­ 68 27 69 14,000 7.5 8.7 330 <0.05 7.4 9.9 270 1,650 <1.3 <0.05 19.0 27.1 

12MW-21D 8/16/2004 500 --­ 49 25 74 4,900 3.5 7.4 170 0.05 7.6 9.0 300 1,380 <0.75 <0.05 23.1 23.1 

12MW-21S 4/8/2003 110 <0.80 57 <10 87 --­ 4.5 7.0 320 <0.05 7.6 18 220 1,200 7.7 <0.05 17.3 --­

12MW-21SR 4/8/2003 --­ --­ 54 --­ --­ --­ --­ 6.6 300 --­ --­ 16 210 --­ --­ --­ --­ --­

12MW-21S 7/15/2003 112 1.2 77 <10 93 380,000 6.5 8.1 400 <0.05 7.3 16 230 1,290 3.5 <0.05 22.4 --­

12MW-21SR 7/15/2003 --­ 1.0 75 --­ 93 --­ --­ 7.9 380 --­ --­ 17 220 --­ 3.5 --­ --­ --­

12MW-21S 9/15/2003 125 --­ 76 <10 94 500,000 3.0 7.7 330 <0.05 8.0 17 210 1,280 <1.5 <0.05 25.0 1.4 

12MW-21SR 9/15/2003 --­ --­ 74 --­ 97 --­ --­ 7.5 320 --­ --­ 16 200 --­ <1.5 --­ --­ --­

12MW-21S 1/13/2004 50 --­ 71 <10 90 410,000 2.0 4.7 140 0.1 8.4 15 170 1,150 <1.3 <0.05 16.3 9.9 

12MW-21S 4/27/2004 75 --­ 76 <10 91 560,000 1.5 4.8 130 0.1 9.2 14 160 1,240 <1.5 <0.05 19.3 8.4 

12MW-21S 8/18/2004 --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­

12MW-21S 8/19/2004 65 --­ 62 <10 110 400,000 0.30 4.8 94 <0.05 8.0 11 130 923 <1.3 <0.05 24.0 --­

12MW-21S 2/1/2005 50 --­ 68 <10 110 580,000 0.40 3.9 --­ 0.05 9.7 10 150 951 <1.3 <0.05 16.9 --­

12MW-21SR 2/1/2005 --­ --­ 68 --­ 110 --­ --­ 4.0 --­ --­ --­ 10 150 --­ <1.3 --­ --­ --­

64 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-21S 2/3/2005 --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­

12MW-21S 5/24/2005 --­ --­ --­ --­ --­ 220,000 --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­

12MW-21S 5/24/2005 70 --­ 84 <10 90 --­ 0.15 3.0 71 0.05 9.6 12 160 1,120 <1.3 <0.05 20.6 7.3 

12MW-21S 9/13/2005 70 --­ 81 <10 94 --­ 0.5 2.5 93 0.05 9.5 12 110 1,050 <1.3 <0.05 24.1 4 

12MW-21S 1/31/2006 --­ --­ --­ -­ 86 --­ 0.35 --­ --­ <0.05 9.4 --­ --­ 889 <1.3 --­ 19.3 0.1 

12MW-21S 6/22/2006 50 --­ 60 <10 85 --­ 0.30 1.7 68 0.1 9.2 --­ 94.0 768 <1.3 <0.05 23.1 --­

12MW-21S 9/11/2006 50 --­ --­ <10 96 --­ 0.15 --­ --­ 0.05 9.4 --­ --­ 750 <1.3 <0.05 24.7 --­

12MW-22D 4/9/2003 205 <1.6 79 21 140 59 3.0 14 200 <0.05 6.5 7.6 170 1,180 <4.0 0.80 18.2 --­

12MW-22D 7/14/2003 250 0.80J 100 60 130 14 3.0 21 280 <0.05 6.7 6.9 270 1,530 <1.5 0.50 21.6 --­

12MW-22D 9/17/2003 375 --­ 99 70 120 8.8 3.5 20 270 0.2 6.3 8.8 250 1,660 <0.5 0.20 22.6 --­

12MW-22D 1/12/2004 350 --­ 83 50 140 6.4 2.0 17 210 0.1 6.8 8.5 180 1,440 <2.0 0.20 19.1 11.8 

12MW-22D 4/28/2004 550 --­ 88 60 130 120 1.9 18 220 0.2 7.1 8.5 200 1,550 <2.0 0.15 17.7 --­

12MW-22D 8/17/2004 500 --­ 79 50 140 --­ 2.0 16 210 0.3 6.9 8.1 220 1,530 <1.8 <0.05 23.5 12.9 

12MW-22D 5/25/2005 550 --­ 71 60 110 --­ 1.4 15 200 0.1 7.1 7.5 260 1,380 <1.5 <0.05 20.7 27.7 

12MW-22D 6/21/2006 375 --­ 58 35 150 --­ 1.1 11 160 0.2 6.9 --­ 150 1,100 <1.8 0.05 22.7 --­

12MW-22D 5/22/2007 300 --­ 41 50 150 --­ 0.95 8.7 110 0.1 7.1 6.0 141 1,110 <0.10 <0.05 21.6 --­

12MW-22D 11/28/2007 350 --­ 51 35 150 --­ 1.1 11 140 0.1 7.4 6.8 159 1,100 0.37J 0.13 21.7 --­

12MW-22D 9/1/2009 250 --­ --­ 11 --­ --­ 0.61 --­ --­ 0.1 7.0 --­ --­ 910 --­ <0.2 22.1 --­

12MW-22S 4/10/2003 60 <1.0 14 60 96 2,100 7.5 5.3 94 0.3 5.8 1.7J 73.0 518 8 <0.05 16.2 --­

12MW-22S 7/17/2003 70 <0.50 16 240 96 1,200 14 6.5 110 <0.05 5.8 1.7J 68.0 536 1.4J 0.6 22.3 --­

12MW-22S 9/15/2003 <10 --­ 19 270 86 410 28 7.6 120 <0.05 5.9 2.1 79.0 --­ 1.3J 0.05 23.3 --­

12MW-22S 1/14/2004 80 --­ 29 220 82 6.7 23 12 170 <0.05 6.6 2.1 78.0 741 <1.5 0.20 18.6 6.2 

12MW-22S 4/28/2004 150 --­ 43 270 90 10 27 17 250 <0.05 6.3 2.1 85.0 924 <1.3 0.20 17.5 --­

12MW-22S 8/17/2004 250 --­ 38 300 98 5.7 30 14 210 0.05 6.1 1.9J 100 918 <1.3 <0.05 23.5 8.5 

12MW-22S 2/3/2005 250 --­ 42 --­ 99 2.7 20 15 --­ <0.05 6.4 1.9 110 884 <1.3 0.20 17.0 1.5 

12MW-22S 5/24/2005 250 --­ 41 250 96 2.9 25 14 220 0.05 6.3 2.9 120 954 <1.3 0.10 19.1 40.8 

12MW-22S 9/13/2005 225 --­ 33 250 100 --­ 20 12 160 0.05 6.3 1.5 81.0 846 <1.5 0.10 23.9 3.4 

12MW-22S 1/31/2006 --­ --­ --­ --­ 91 --­ --­ --­ --­ 0.05 6.0 --­ --­ 691 2.3J --­ 19.1 65.8 

12MW-22S 6/20/2006 225 --­ 30 160 99 2.6 16 11 150 0.05 6.2 --­ 89.0 821 <1.3 <0.05 23.0 --­

12MW-22S 9/11/2006 200 --­ --­ 170 90 --­ 14 --­ --­ <0.05 6.4 --­ --­ 756 <1.3 0.05 24.1 --­

12MW-22S 5/22/2007 175 --­ 22 140 92 --­ 13 8.1 100 <0.05 6.5 1.45 103 743 1.09 <0.05 21.4 --­

12MW-22S 7/17/2007 167 --­ 22 130 90 --­ 11 7.8 99 <0.05 6.4 1.39 115 699 1.2 <0.05 23.2 --­

12MW-22S 11/27/2007 175 --­ 20 100 85 --­ 8.3 7.0 91 <0.05 6.6 1.36 104 672 0.98 0.09 23.0 --­

12MW-22S 5/6/2008 160 --­ 17 65 90 --­ 8.8 6.3 78 <0.05 6.6 1.23 99.8 651 0.73 0.075 20.8 --­

12MW-22S 2/11/2009 110 --­ 14 40 98 --­ 3.6 5.02 64 <0.02 6.6 1.1 98.5 577 0.67 <0.2 19.6 --­

12MW-22S 9/1/2009 85 --­ 9.1 40 120 --­ 6 3.5J 42 <0.02 6.6 --­ --­ 541 <1 <0.2 23.0 --­

12MW-23D 4/8/2003 140 <0.80 27 17 83 --­ 0.85 5.5 66 0.2 6.8 4.8 83.0 572 <2.0 <0.05 17.9 --­

12MW-23D 7/14/2003 180 <0.50 33 18 99 --­ 1.0 6.7 84 0.2 6.7 4.5 74.0 682 3.3 <0.05 22.3 --­

12MW-23D 9/17/2003 160 --­ 32 17 89 --­ 1.5 6.1 76 0.3 7.0 5.0 88.0 654 2.1J <0.05 22.1 --­

12MW-23D 1/12/2004 130 --­ 42 20 150 --­ 1.0 8.2 110 0.3 7.1 6.5 98.0 897 4 <0.05 19.2 1.8 

12MW-23D 4/27/2004 185 --­ 32 15 93 --­ 1.3 6.3 79 0.2 7.1 5.7 98.0 655 2.4J <0.05 20.3 7.4 

12MW-23D 8/18/2004 140 --­ 39 16 140 --­ 1.5 8.0 98 0.2 7.0 6.1 110 815 2.7J <0.05 23.9 6.9 

12MW-23D 5/25/2005 175 --­ 36 25 110 --­ 0.60 7.2 87 0.2 7.2 5.7 100 773 <1.5 <0.05 20.1 --­

12MW-23D 6/21/2006 200 --­ 42 22 130 --­ 0.7 8.4 100 0.2 7.0 --­ 95.0 848 <1.8 <0.05 22.7 --­

12MW-23S 4/9/2003 145 0.97 12 60 66 3.8 2.5 3.6 73 0.2 5.9 1.9 130 705 56 <0.05 18.1 --­

12MW-23S 7/16/2003 200 0.60J 15 150 71 2.4 5.0 4.4 94 0.2 6.3 2.0 120 735 55 <0.05 23.0 --­

12MW-23S 9/17/2003 175 --­ 17 130 60 4.3 6.0 4.2 82 0.05 6.2 2.4 98.0 609 33 <0.05 24.4 8.4 

12MW-23S 1/14/2004 130 --­ 15 55 52 2.8 1.3 3.8 70 0.9 6.9 2.4 60.0 474 13 <0.05 18.7 2.7 

12MW-23S 4/27/2004 175 --­ 15 60 53 --­ 0.85 3.9 83 0.4 6.4 2.2 71.0 495 11 <0.05 20.2 9.3 

12MW-23S 8/17/2004 160 --­ 16 85 51 2.2 4.5 4.0 71 0.05 6.2 2.4 72.0 472 5.9 <0.05 23.3 8.6 

12MW-23S 2/1/2005 --­ --­ 16 --­ 55 --­ --­ 4.0 --­ --­ --­ 2.3 65.0 --­ 4.4 --­ --­ --­

65 
 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-23S 2/3/2005 --­ --­ --­ --­ --­ 1.8 --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ --­

12MW-23S 2/5/2005 110 --­ --­ 40 --­ --­ 1.7 --­ --­ 0.7 6.4 --­ --­ 452 --­ <0.05 18.7 4.3 

12MW-23S 5/25/2005 120 --­ 15 100 61 42 1.8 4.0 92 0.05 6.3 2.2 74.0 502 4.4 <0.05 18.9 1.5 

12MW-23S 9/12/2005 120 --­ 17 120 58 --­ 5.0 4.2 75 0.05 6.3 2.5 72.0 465 2.4 <0.05 23.9 4.6 

12MW-23S 1/30/2006 --­ --­ --­ --­ 59 --­ 2.1 --­ --­ 0.50 6.2 --­ --­ 449 2.9 --­ 19.7 1.4 

12MW-23S 6/21/2006 110 460 16 110 58 --­ 4.0 4.3 97 --­ 6.0 --­ 66.0 476 2.3 <0.05 22.5 --­

12MW-23S 9/12/2006 115 --­ --­ 160 58 --­ 4.8 --­ --­ 0.05 6.1 --­ --­ 455 2.0 <0.05 22.7 --­

12MW-23S 5/21/2007 112 --­ 14 170 61 --­ 4.7 4.1 73 0.05 6.2 2.2 67.7 499 2.29 <0.05 21.1 --­

12MW-23S 7/16/2007 90 --­ 15 190 64 --­ 5.3 4.5 87 0.1 6.0 2.3 72.9 494 2.86 <0.05 22.5 --­

12MW-23S 11/27/2007 112 --­ 15 190 60 --­ 5.1 4.5 92 0.1 6.2 2.4 70.1 478 2.4 0.06 22.4 --­

12MW-23S 5/6/2008 100 --­ 14 170 66 --­ 4.9 4.4 125 0.05 6.0 2.2 71.2 488 2.94 0.04 19.6 --­

12MW-23S 2/11/2009 110 --­ 18 150 61 --­ 4 5.32 80 0.07 6.2 2.5 73.7 467 2.9 <0.2 19.2 --­

12MW-23S 7/20/2009 <10 --­ 19 140 63 --­ 6.4 5.4 95 0.05 6.3 --­ --­ 480 2.1 <0.2 22.5 --­

12MW-23SR 7/20/2009 --­ --­ 20 --­ 62 --­ --­ 5.5 98 --­ --­ --­ --­ --­ 2.5 --­ --­ --­

12MW-24D 4/7/2003 180 <0.80 120 100 86 --­ 40 21 1,400 0.12 6.5 8.7 130 1,300 <2 0.10 20.8 --­

12MW-24D 7/16/2003 450 0.70J 170 140 92 400 45 23 1,900 <0.05 6.6 10 120 1,590 <1.3 <0.05 22.4 --­

12MW-24D 9/16/2003 500 --­ 160 130 84 18 35 21 1,400 <0.05 7.0 12 130 1,580 <1.3 <0.05 23.3 --­

12MW-24D 1/12/2004 400 --­ 180 60 78 89 28 30 1,300 0.03 6.5 12 120 1,640 <1.3 <0.05 18.0 18.3 

12MW-24D 4/27/2004 500 --­ 130 45 79 --­ 15 22 710 0.05 7.3 12 100 1,310 <1.3 <0.05 19.0 18.1 

12MW-24D 8/16/2004 400 --­ 150 65 79 1,600 23 25 940 0.03 7.0 12 140 1,410 1.7J <0.05 23.0 5.2 

12MW-24S 4/7/2003 125 <0.60 100 100 65 --­ 44 22 1,400 0.2 5.9 5.5 91.0 1,090 <1.5 0.30 20.6 --­

12MW-24S 7/16/2003 425 0.91 160 190 53 8,600 50 30 1,600 <0.05 6.5 6.8 100 1,430 <0.75 0.20 22.6 --­

12MW-24S 9/16/2003 325 --­ 170 150 46 24,000 35 26 1,300 0.1 6.8 9.9 110 1,510 <0.75 <0.05 24.0 --­

12MW-24S 1/13/2004 400 --­ 110 70 42 5,000 15 17 710 <0.05 7.2 8.7 80.0 1,100 <0.75 <0.05 17.2 25 

12MW-24S 4/27/2004 500 --­ 79 80 38 --­ 13 15 470 <0.05 6.9 7.4 80.0 972 0.87J <0.05 19.8 10.3 

12MW-24S 8/18/2004 325 --­ 62 60 39 --­ 15 12 350 <0.05 6.8 6.5 79.0 801 <0.75 <0.05 24.4 31.2 

12MW-24S 2/1/2005 225 --­ 45 40 37 --­ 6.4 9.1 --­ <0.05 7.0 5.2 75.0 674 <0.5 <0.05 17.0 15.3 

12MW-24S 1/30/2006 --­ --­ --­ --­ 48 --­ 2.6 --­ --­ <0.05 7.2 --­ --­ 494 2.8 --­ 18.9 3.2 

12MW-24S 6/21/2006 125 380 23 16 50 --­ 2.6 3.9 96 <0.05 6.9 --­ 58.0 466 <0.75 <0.05 22.8 --­

12MW-24S 9/11/2006 110 --­ --­ 15 56 --­ 1.8 --­ --­ <0.05 7.2 --­ --­ 430 <0.75 <0.05 23.4 --­

12MW-25D 7/15/2003 125 <1.0 40 14 140 --­ 1.5 6.3 90 0.2 7.2 5.0 110 861 5.6 0.30 21.4 --­

12MW-25D 9/16/2003 190 --­ 50 18 140 10 1.5 8.4 120 0.1 7.1 5.9 130 460 <2.0 0.60 21.9 --­

12MW-25D 1/12/2004 130 --­ 56 16 150 --­ 1.2 11 140 0.1 6.4 7.2 120 1,060 <2.0 0.90 17.8 --­

12MW-25D 4/28/2004 125 --­ 89 25 150 --­ 2.5 18 220 0.05 6.7 8.4 120 1,210 <2.5 0.50 19.1 17.3 

12MW-25D 8/16/2004 200 --­ 56 33 180 --­ 1.5 11 140 0.2 6.9 7.4 150 1,090 <2.3 0.15 22.1 14.5 

12MW-25D 5/23/2005 250 --­ 90 70 150 --­ 2.5 19 350 0.1 6.9 8.4 160 1,200 <1.8 0.25 21.5 15.3 

12MW-25D 6/21/2006 275 --­ 63 45 130 --­ 2.1 13 270 0.1 6.8 --­ 110 1,050 <1.8 0.10 21.1 --­

12MW-25S 4/9/2003 100 <0.60 18 30 48 2.6 2.0 4.3 66 0.1 6.3 2.3 62.0 410 2.7 <0.05 17.4 --­

12MW-25S 7/15/2003 105 0.35J 16 45 49 5.5 2.0 4.1 59 0.1 6.8 2.3 58.0 405 1.7 <0.05 21.3 --­

12MW-25S 9/17/2003 110 --­ 16 30 47 10 2.0 3.9 55 0.1 6.3 2.5 59.0 412 1.0J 0.10 21.3 5.5 

12MW-25S 1/13/2004 115 --­ 17 30 49 8.5 1.6 4.1 59 0.1 6.7 2.5 47.0 420 <0.75 <0.05 16.2 1 

12MW-25S 4/27/2004 120 --­ 21 40 48 --­ 1.8 5.1 72 0.3 6.5 3.0 57.0 469 <0.75 <0.05 18.7 19.7 

12MW-25S 8/18/2004 160 --­ 25 40 49 3,100 2.0 6.2 85 0.2 6.3 3.3 69.0 506 <0.75 <0.05 22.7 28.9 

12MW-25S 2/1/2005 225 --­ 30 60 48 --­ 2.2 7.3 --­ 0.05 6.4 3.0 79.0 588 <0.75 <0.05 17.8 5.3 

12MW-25S 5/23/2005 210 --­ 34 85 48 --­ 2.3 8.4 110 0.05 6.5 3.1 87.0 630 <0.75 0.05 21.3 18.4 

12MW-25S 9/12/2005 240 --­ 34 110 52 --­ 2.4 8.8 110 0.1 6.5 3.6 93.0 670 0.84J <0.05 23.2 12.2 

12MW-25S 1/30/2006 --­ --­ --­ --­ 44 --­ 2.3 --­ --­ 0.2 6.6 --­ --­ 683 <0.75 --­ 18.8 7.7 

12MW-25S 6/21/2006 260 560 42 100 47 --­ 2.6 10 130 0.1 6.4 --­ 90.0 697 1.3J 0.05 21.6 --­

12MW-25S 9/11/2006 260 --­ --­ 140 98 --­ 2.6 --­ --­ 0.05 6.5 --­ --­ 686 1.8J <0.05 22.1 --­

12MW-25S 5/21/2007 225 --­ 33 120 51 --­ 2.2 8.6 110 0.05 6.4 3.4 77.4 653 0.67 <0.05 20.5 --­

12MW-25S 7/16/2007 200 --­ 36 110 50 --­ 2.3 9.2 110 0.05 6.5 3.6 81.5 629 0.66 0.05 22.1 --­

66 
 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-25S 11/27/2007 225 --­ 33 80 50 --­ 1.9 8.4 100 0.05 6.6 3.6 76.4 594 0.48 0.09 21.1 --­

12MW-25S 5/6/2008 225 --­ 31 85 52 --­ 2.2 7.7 94 0.05 6.6 3.3 71.1 561 0.32J 0.06 19.6 --­

12MW-25S 2/11/2009 150 --­ 29 40 68 --­ 1.5 7.36 89 0.07 6.6 3.3 69.6 525 <0.1 <0.2 19.8 --­

12MW-25S 9/1/2009 125 --­ 27 35 92 --­ 1.7 7.4 82 0.05 6.5 --­ --­ 507 <1 <0.2 21.8 --­

12MW-26S 4/8/2003 85 <0.60 20 30 51 --­ 1.9 4.7 67 0.1 6.6 2.8 56.0 403 <1.5 0.05 16.8 --­

12MW-26S 7/16/2003 85 <0.30 33 45 50 --­ 4.0 7.9 120 <0.05 6.3 2.5 48.0 508 <0.75 0.30 22.3 --­

12MW-26S 9/17/2003 125 --­ 25 60 48 --­ 2.5 5.7 83 <0.05 6.4 3.2 58.0 466 <0.75 0.05 23.8 8.9 

12MW-26S 1/13/2004 110 --­ 24 60 52 --­ 3.1 5.5 85 <0.05 7.1 3.2 44.0 462 <0.75 0.05 17.7 --­

12MW-26S 4/27/2004 110 --­ 21 60 53 --­ 3.2 4.9 72 --­ 6.4 2.8 48.0 423 <1 <0.05 18.5 4.7 

12MW-26S 8/18/2004 70 --­ 20 120 68 --­ 3.5 5 71 <0.05 6.2 2.7 58.0 441 <1 0.05 24.3 8.3 

12MW-26S 2/2/2005 100 --­ 21 110 79 --­ 4.5 5.5 --­ 0.05 5.9 2.6 61.0 486 1.1J <0.05 15.8 12 

12MW-26S 5/25/2005 40 --­ --­ 25 84 --­ 7.0 --­ --­ 0.05 7.1 --­ --­ 509 <1 <0.05 19.7 --­

12MW-26S 1/31/2006 --­ --­ --­ --­ 110 --­ 6.5 --­ --­ 0.1 6.0 --­ --­ 590 <1.3 --­ 18.6 --­

12MW-26S 7/5/2006 65 --­ --­ 70 --­ --­ 4.0 --­ --­ 0.1 6.1 --­ --­ 574 --­ <0.05 22.3 '--­

12MW-26S 9/12/2006 110 --­ --­ 85 67 --­ 2.0 --­ --­ 0.05 6.4 --­ --­ 432 <1 <0.05 21.8 --­

12MW-26S 5/21/2007 85 --­ 21 150 89 --­ 4.1 6.5 79 0.05 6.1 2.6 68.4 535 1.0 <0.05 20.6 --­

12MW-26S 7/16/2007 80 --­ 21 140 100 --­ 4.7 6.5 81 <0.05 6.0 2.6 70.1 534 1.2 <0.05 21.5 --­

12MW-26S 8/22/2007 --­ --­ 21 --­ 120 --­ --­ 6.7 80 --­ --­ 2.6 75.8 --­ 1.5 --­ --­ --­

12MW-26SR 8/22/2007 --­ --­ 21 --­ 120 --­ --­ 6.4 76 --­ --­ 2.6 71.0 --­ 1.4 --­ --­ --­

12MW-26S 11/26/2007 50 --­ 20 110 110 --­ 4.7 6.3 77 0.05 6.1 2.8 70.4 508 1.3 0.15 22.1 --­

12MW-26SR 11/26/2007 --­ --­ 20 --­ 110 --­ --­ 6.1 75 --­ --­ 2.7 68.7 --­ 1.3 --­ --­ --­

12MW-26S 5/6/2008 95 --­ 21 140 94 --­ 4.9 6.0 74 <0.05 6.1 2.7 65.5 584 1.1 0.05 19.1 --­

12MW-26S 8/14/2008 75 --­ 21 150 100 --­ 5.0 6.5 81 0.1 5.9 2.5 73.3 533 1.4 <0.20 22.0 --­

12MW-26S 2/11/2009 90 --­ 23 160 110 --­ 2 7.26 87 0.05 6.0 2.8 78.4 558 1.4 <0.2 18.4 --­

12MW-26S 7/20/2009 <10 --­ 26 65 110 --­ 4.8 7.1 84 0.05 6.2 --­ --­ 572 2 <0.2 22.51 --­

12MW-26S 9/1/2009 80 --­ 23 160 120 --­ 4.8 7.4 87 0.03 5.9 --­ --­ 574 1.1 <0.2 22.31 --­

12MW-27D 4/8/2003 200 <2.0 47 33 220 --­ 2.2 9.5 110 0.2 6.8 6.4 170 1,190 6.2 <0.05 17.2 --­

12MW-27D 7/15/2003 175 <1.0 52 22 280 --­ 2.0 11 120 0.2 6.9 6.0 190 1,300 7.9 <0.05 22.4 --­

12MW-27D 9/16/2003 175 --­ 51 21 260 --­ 2.0 10 110 0.1 6.9 6.1 190 1,340 5.8J <0.05 22.8 4 

12MW-27D 1/12/2004 150 --­ 52 21 290 --­ 1.0 10 110 0.3 6.8 6.6 180 1,400 <6.3 <0.05 18.1 2.7 

12MW-27D 4/28/2004 150 --­ 50 19 250 --­ 0.90 10 130 0.1 6.9 6.3 150 1,330 5J <0.05 18.5 17.9 

12MW-27D 8/18/2004 200 --­ 42 30 220 --­ 1.6 8.8 98 0.1 6.8 5.4 170 1,150 <2.5 0.10 24.1 --­

12MW-27D 5/23/2005 225 --­ 1.6 37 270 --­ 1.5 1.4 11 0.1 7.0 <0.36 25.0 1,340 <5 <0.05 22.9 0.2 

12MW-27D 6/21/2006 100 --­ 63 45 190 --­ 1.5 13 130 0.1 6.7 --­ 170 1,370 <2.5 <0.05 23.4 --­

12MW-27S 4/9/2003 <10 <0.60 4.3 150 32 --­ 1.4 1.8 33 0.3 4.7 0.67J 28.0 195 18 <0.05 16.2 --­

12MW-27S 7/16/2003 <10 0.35J 3.2 200 37 --­ 3.5 1.6 29 <0.05 5.0 0.62J 24.0 195 17 <0.05 22.4 --­

12MW-27S 9/16/2003 <10 --­ 2.8 200 34 --­ 5.5 1.5 25 0.05 5.0 0.63J 28.0 240 <2.5 <0.05 24.3 --­

12MW-27S 1/14/2004 <10 --­ 3.1 --­ 37 --­ 0.80 1.5 25 0.6 5.4 0.48J 20.0 196 14 <0.05 17.2 --­

12MW-27S 4/27/2004 <10 --­ 2.5 140 37 --­ 0.50 1.5 23 0.2 4.9 0.79J 22.0 193 16 <0.05 19.4 6.7 

12MW-27S 8/18/2004 <10 --­ 2.2 190 36 --­ 2.5 1.4 17 0.1 4.7 0.94J 28.0 190 14 <0.05 24.6 --­

12MW-27S 2/3/2005 <50 --­ --­ 22 --­ --­ 4.0 --­ --­ 0.4 4.9 --­ --­ 175 --­ <0.05 16.9 8 

12MW-27S 5/23/2005 <10 --­ 59 210 38 --­ 2.5 12 120 0.1 4.9 6.6 230 189 13 <0.05 21.6 --­

12MW-27S 9/13/2005 <10 --­ 1.2 240 39 --­ 3.5 1.5 11 0.2 4.7 0.51J 25.0 202 12 <0.05 24.1 --­

12MW-27S 1/31/2006 --­ --­ --­ --­ 43 --­ 2.0 --­ --­ 0.2 4.7 --­ --­ 223 12 --­ 20.0 --­

12MW-27S 6/21/2006 <10 --­ 2.1 350 46 --­ 2.5 2.1 15 0.05 4.6 --­ 29.0 237 10 <0.05 23.4 --­

12MW-27S 9/12/2006 <10 --­ --­ 350 47 --­ 3.0 --­ --­ 0.1 4.5 --­ --­ 241 9.9 <0.05 23.6 --­

12MW-27S 5/23/2007 <10 --­ 1.6 420 45 --­ 2.0 2.1 14 0.05 4.5 0.62 35.4 229 9.6 <0.05 20.4 --­

12MW-27S 7/17/2007 <10 --­ 2.0 420 45 --­ 3.0 2.2 14 0.1 4.6 0.71 35.9 231 9.6 <0.05 23.1 --­

12MW-27S 11/27/2007 <10 --­ 1.7 350 47 --­ 2.7 2.1 14 0.1 4.7 0.69 34.4 234 8.5 0.06 21.7 --­

12MW-27S 5/5/2008 <10 --­ 1.2 370 45 --­ 1.6 1.9 9.9J 4.6 0.57 34.0 222 9.0 0.047 20.5 --­

12MW-27S 2/10/2009 <10 --­ 2.2 330 47 --­ 1.5 2.5 15 0.5 4.6 0.66 39.2 235 8.6 <0.2 18.5 --­

67 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-27S 7/20/2009 <10 --­ <5 --­ 47 --­ 2.5 1.8J 8.7J 0.05 4.7 --­ --­ 215 20 <0.2 23.1 --­

12MW-28D 4/8/2003 50 <0.80 20 16 85 --­ 0.65 4.3 48 0.2 6.9 3.5 96.0 588 3 <0.05 18.5 --­

12MW-28D 7/15/2003 100 0.55J 23 18 100 --­ 1.5 4.9 64 <0.05 6.9 4 95.0 647 3.8 <0.05 23.0 --­

12MW-28D 9/17/2003 150 --­ 24 19 98 --­ 2.0 5 64 0.1 6.9 4.2 100 688 4.1 <0.05 22.8 5 

12MW-28D 1/12/2004 175 --­ 36 17 150 --­ 1.3 7.5 96 0.2 6.6 5.6 110 888 <2 0.20 18.8 --­

12MW-28D 4/26/2004 180 --­ 34 25 130 --­ 1.7 7.2 95 0.05 7.0 5.5 95.0 831 <2 0.10 21.0 12.1 

12MW-28D 8/17/2004 240 --­ 41 30 150 --­ 2.0 8.8 110 0.2 6.9 6.3 140 928 <1.8 <0.05 23.4 15.2 

12MW-28D 5/25/2005 200 --­ 52 40 120 --­ 1.5 11 140 0.1 6.7 6.5 160 1,030 <1.5 0.05 21.7 9.1 

12MW-28D 6/22/2006 350 --­ 64 100 120 --­ 1.4 14 170 0.2 6.5 --­ 120 1,070 <1.8 0.10 21.7 --­

12MW-28D 5/22/2007 275 --­ 46 100 130 --­ 1.0 11 130 0.1 6.6 6.8 129 947 <0.1 0.05 21.3 --­

12MW-28D 7/16/2007 225 --­ --­ 65 --­ 0.85 --­ --­ 0.1 6.6 --­ --­ 915 --­ 0.05 22.6 --­

12MW-28D 11/28/2007 250 --­ 42 70 100 --­ 0.81 9.6 120 0.05 7.1 6.5 121 840 0.39J 0.14 21.8 --­

12MW-28D 2/11/2009 260 --­ 41 50 90 --­ 0.73 9.5 110 0.1 6.8 6.6 121 793 <0.1 <0.2 20.6 --­

12MW-28S 4/9/2003 250 <1.6 110 70 130 2.3 4.5 12 140 0.2 6.1 2.3 70.0 1,050 15 <0.05 17.7 --­

12MW-28SR 4/9/2003 --­ <1.6 120 --­ 130 --­ --­ 13 140 --­ --­ 2.5 70.0 --­ 15 --­ --­ --­

12MW-28SR 7/17/2003 --­ <0.80 73 --­ 120 --­ --­ 9.3 120 --­ --­ 1.8 70.0 --­ 12 --­ --­ --­

12MW-28SR 9/15/2003 --­ --­ 42 --­ 120 --­ --­ 7.2 81 --­ --­ 1.7J 70.0 --­ 7.9 --­ --­ --­

12MW-28SR 1/14/2004 --­ --­ 32 --­ 120 --­ --­ 5.8 61 --­ --­ 1.7J 49.0 --­ 6.5 --­ --­ --­

12MW-28S 4/28/2004 <10 --­ 24 220 110 18 0.80 6.3 60 0.2 5.6 1.6J 59.0 528 6.8 <0.05 18.6 --­

12MW-28SR 4/28/2004 --­ --­ 24 --­ 120 --­ --­ 6.3 60 --­ --­ 1.5J 59.0 --­ 7.2 --­ --­ --­

12MW-28S 8/17/2004 35 --­ 20 250 110 3.0 4.5 5.8 64 0.3 5.3 64 64.0 521 5.5 <0.05 23.8 12.8 

12MW-28SR 8/17/2004 --­ --­ 20 --­ 110 --­ --­ 5.9 64 --­ --­ 63 63.0 --­ 5.9 --­ --­ --­

12MW-28S 2/2/2005 60 --­ 21 180 110 0.82 1.3 5.5 --­ 0.4 5.7 1.4J 61.0 511 4.5 <0.05 18.5 --­

12MW-28SR 2/2/2005 --­ --­ 22 --­ 120 --­ --­ 5.7 --­ --­ --­ 1.5J 64.0 --­ 5.4 --­ --­ --­

12MW-28S 5/24/2005 <10 --­ 20 210 120 0.98J 0.7 5.5 53 0.05 5.4 1.6 64.0 538 5.9 <0.05 21.2 12.6 

12MW-28SR 5/24/2005 --­ --­ 20 --­ 120 --­ --­ 5.6 54 --­ --­ 1.2J 65.0 --­ 5.8 --­ --­ --­

12MW-28S 9/13/2005 <10 --­ 18 250 130 --­ 2.6 5.5 52 0.2 5.2 1.3J 69.0 533 8.6 <0.05 23.7 11.4 

12MW-28SR 9/13/2005 --­ --­ 18 --­ 130 --­ --­ 5.6 53 --­ --­ 1.6 71.0 --­ 8 --­ --­ --­

12MW-28S 1/31/2006 --­ --­ --­ --­ 120 --­ --­ --­ --­ --­ --­ --­ --­ --­ 5.4 --­ --­ --­

12MW-28SR 1/31/2006 --­ --­ --­ --­ 120 --­ --­ --­ --­ --­ --­ --­ --­ --­ 5.4 --­ --­ --­

12MW-28S 6/20/2006 <10 --­ 18 250 140 1.2 0.95 5.9 54 0.1 5.1 --­ 68.0 553 7 <0.05 22.9 --­

12MW-28SR 6/20/2006 --­ --­ 18 --­ 140 --­ --­ 5.7 53 --­ --­ --­ 66.0 --­ 5.4 --­ --­ --­

12MW-28S 9/12/2006 <10 --­ --­ 270 120 --­ 2.4 --­ --­ 0.2 5.2 --­ --­ 538 4.1 <0.05 24.1 --­

12MW-28SR 9/12/2006 --­ --­ --­ 120 --­ --­ --­ --­ --­ --­ --­ --­ --­ 4.1 --­ --­ --­

12MW-28S 5/22/2007 <10 --­ 13.5 270 120 --­ 1.0 4.9 43 0.2 5.1 1.5 65.6 503 5.6 <0.05 20.3 --­

12MW-28SR 5/22/2007 --­ --­ 12.9 --­ 120 --­ --­ 4.6 41 --­ --­ 1.4 63.1 --­ 5.5 --­ --­ --­

12MW-28S 7/17/2007 <10 --­ 13.8 260 120 --­ 2.0 5.0 44 0.1 5.2 1.6 71.7 485 4.5 <0.05 23.6 --­

12MW-28S 11/27/2007 <10 --­ 13.2 270 100 --­ 1.9 4.7 44 0.5 5.3 1.7 63.9 466 4.0 0.07 22.6 --­

12MW-28S 5/6/2008 <10 --­ 10.4 250 95 --­ 0.69 3.9 34 0.05 5.2 1.4 57.7 435 5.1 0.04 20.9 --­

12MW-28SR 5/6/2008 --­ --­ 10.5 --­ 94 --­ --­ 4.0 35 --­ --­ 1.4 58.7 --­ 5.1 --­ --­ --­

12MW-28S 2/11/2009 <10 --­ 11 280 92 --­ 1.9 4.56 40 0.1 5.1 1.5 65.2 432 5.8 <0.2 19.6 --­

12MW-28SR 2/11/2009 --­ --­ 12 --­ 92 --­ --­ 4.61 40 --­ --­ 1.5 65.9 --­ 5.8 --­ --­ --­

12MW-28S 7/20/2009 <10 --­ 11 260 96 --­ 5 4.4J 36 0.05 5.5 --­ --­ 439 12 <0.2 23.1 --­

12MW-29S 8/17/2004 50 --­ 4.2 40 90 2.0 0.80 2.3 17 0.05 5.7 1.5J 82.0 463 2.0J <0.05 20.9 38.4 

12MW-29SR 8/17/2004 --­ --­ 4.4 --­ 89 --­ --­ 2.3 17 --­ --­ 1.6J 82.0 --­ 2.2 --­ --­ --­

12MW-29S 2/2/2005 50 --­ 6.2 20 94 1.8 0.80 2.5 --­ 0.2 6.1 1.2J 88.0 478 1.4J <0.05 17.4 --­

12MW-29S 5/24/2005 65 --­ 6.5 70 86 1.0J 0.60 2.6 23 0.05 --­ 1.2J 85.0 478 1.8J <0.05 18.1 9.2 

12MW-29SR 5/24/2005 --­ --­ 6.6 --­ 87 --­ --­ 2.6 23 --­ --­ 1.1J 85.0 --­ 1.7J --­ --­ --­

12MW-29S 9/13/2005 <10 --­ 5.9 150 80 --­ 0.50 2.5 22 0.1 6.1 1.7 85.0 460 2J <0.05 21.5 34.9 

12MW-29SR 9/13/2005 --­ --­ 6.1 --­ 84 --­ --­ 2.6 23 --­ --­ 1.5 86.0 --­ 1.9J --­ --­ --­

12MW-29S 1/31/2006 --­ --­ --­ --­ 76 --­ 0.30 --­ --­ --­ 6.1 --­ --­ 449 1.8J --­ 17.3 6.3 

68 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 4. Concentrations of inorganic constituents measured in groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina,
 

August 2000 to September 2009 (continued).
 

[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units, μS/cm, microsiemens per centimeter at 25 degrees Celsius; NTU, Nephelometric turbidity units; ---, Data not collected; <, less than; J,
 

estimated; R, replicate sample]
 

Well number Sampling 

date 

Alkalinity 

(mg/L) 

Bromide 

(mg/L) 

Calcium 

(mg/L) 

Carbon 

Dioxide 

(mg/L) 

Chloride 

(mg/L) 

Hydrogen 

(nM) 

Iron(II) 

(mg/L) 

Magnesium 

(mg/L) 

Manganese 

(μg/L) 

Dissolved 

Oxygen 

(mg/L) 

pH 

(S.U.) 

Potassium 

(mg/L) 

Sodium 

(mg/L) 

Specific 

Cond. (μS/cm 

at 25o C) 

Sulfate 

(mg/L) 

Sulfide 

(mg/L) 

Temperature 

(Celsius) 

Turbidity 

(NTU) 

12MW-29SR 1/31/2006 --­ --­ --­ --­ 76 --­ --­ --­ --­ --­ --­ --­ --­ --­ 1.6J --­ --­ --­

12MW-29S 6/20/2006 70 --­ --­ 110 80 --­ 0.50 --­ --­ 0.2 6.0 --­ --­ 476 1.9J <0.05 20.0 --­

12MW-29SR 6/20/2006 --­ --­ --­ --­ 79 --­ --­ --­ --­ --­ --­ --­ --­ --­ 1.7J --­ --­ --­

12MW-29S 9/11/2006 65 --­ --­ 30 77 --­ 0.80 --­ --­ 0.1 6.0 --­ --­ 471 1.8J <0.05 21.3 --­

12MW-29SR 9/11/2006 --­ --­ --­ --­ 77 --­ --­ --­ --­ --­ --­ --­ --­ --­ 1.7J --­ --­ --­

12MW-29S 5/22/2007 90 --­ --­ 35 71 --­ 0.40 --­ --­ 0.1 6.0 --­ --­ 463 1.8 <0.05 19.0 --­

12MW-29SR 5/22/2007 --­ --­ --­ --­ 70 --­ --­ --­ --­ --­ --­ --­ --­ --­ 1.7 --­ --­ --­

12MW-29S 7/17/2007 90 --­ --­ 25 71 --­ 0.30 --­ --­ 0.05 5.8 --­ --­ 470 1.8 <0.05 19.3 --­

12MW-29S 11/27/2007 50 --­ --­ 12 67 --­ <0.05 --­ --­ 2.0 7.4 --­ --­ 486 1.7 0.12 18.6 --­

12MW-29S 5/6/2008 70 --­ --­ 25 68 --­ 0.09 --­ --­ 0.2 6.2 --­ --­ 470 2.0 <0.6 19.6 --­

12MW-29S 2/11/2009 75 --­ --­ 20 71 --­ 1.1 --­ --­ 0.3 6.0 --­ --­ 451 1.7 0.28 18.1 --­

12MW-29S 7/20/2009 70 --­ --­ 23 77 --­ 0.26 --­ --­ 0.2 5.9 --­ --­ 458 2.5 0.21 20.8 --­

12MW-30S 8/18/2004 100 --­ 6.2 50 100 2.6 --­ 2.3 45 0.05 5.6 1.2J 81.0 500 6.9 <0.05 20.6 21.6 

12MW-30SR 8/18/2004 --­ --­ 6.2 --­ 97 --­ --­ 2.3 46 --­ --­ 1.4J 83.0 --­ 6.3 --­ --­ --­

12MW-30S 5/24/2005 70 --­ 9.4 50 96 17 0.40 2.6 37 0.1 --­ 1.2J 88.0 505 1.7J <0.05 19.8 11.4 

12MW-30S 9/13/2005 65 --­ 11 40 88 --­ 0.40 2.6 38 0.2 6.0 1.5 89.0 494 2.5 <0.05 21.5 27.6 

12PZ-03D 8/19/2004 90 --­ 46 80 580 --­ 24 19 370 0.1 5.6 4.6 310 2,200 58 <0.05 22.8 --­

12PZ-03D 2/1/2005 65 --­ --­ 70 --­ --­ 18 --­ --­ 0.05 5.8 --­ --­ 2,050 --­ <0.05 14.6 190 

12PZ-03D 5/23/2005 100 --­ --­ 100 --­ --­ 24 --­ --­ 0.1 6.1 --­ --­ 2,060 --­ <0.05 --­ --­

12PZ-03D 6/22/2006 45 --­ --­ 160 --­ --­ 25 --­ --­ 0.05 5.7 --­ --­ 2,060 --­ <0.05 22.0 --­

12PZ-03D 5/21/2007 --­ --­ --­ --­ --­ --­ --­ --­ --­ --­ 5.8 --­ --­ 2,080 --­ --­ 18.8 --­

12PZ-03D 11/28/2007 35 --­ 39.1 25 550 --­ 9.9 18 290 0.3 6.5 3.3 333 --­ 50 0.13 --­ --­

12PZ-03D 2/11/2009 --­ --­ --­ 20 --­ --­ 4.3 --­ --­ --­ 5.7 --­ --­ 2,520 --­ 0.60 18.0 --­

69 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix 5. Concentrations of selected volatile organic compounds detected in groundwater from 

temporary wells at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North 

Charleston, South Carolina, August to October 2009. 

[111TCA, 1,1,1-trichloroethane; 11DCA, 1,1-dichloroethane; 11DCE, 1,1-dichloroethene; 14Diox, 1,4-dioxane; cDCE, cis -1,2-

dichloroethene; PCE, tetrachloroethene; TCE, trichloroethene; VC, vinyl chloride; <, less than; J, estimated value; all 

concentrations are in micrograms per liter] 

Sample date 

Well name (month/day/year) 111TCA 11DCA 11DCE 14Diox cDCE PCE TCE VC 

12TW-2009-01 08/18/2009 <1.0 1 170 <10 22 20 540 <1.0 

12TW-2009-02 08/18/2009 <0.5 1 87 <5.0 11 6 390 <0.5 

12TW-2009-03 08/18/2009 <0.5 13 140 11 1 <0.5 1 <0.5 

12TW-2009-04 08/18/2009 <0.5 18 160 16 1 <0.5 1 <0.5 

12TW-2009-05 08/18/2009 <0.5 16 100 8 1 <0.5 1 <0.5 

12TW-2009-06 08/18/2009 <1.0 3 260 <10 22 23 560 <1.0 

12TW-2009-07 08/18/2009 <0.5 5 260 <5.0 7 7 170 <0.5 

12TW-2009-08 08/18/2009 <0.5 5 260 <5.0 4 4 87 <0.5 

12TW-2009-09 08/18/2009 <0.5 3 110 <5.0 1 1 14 <0.5 

12TW-2009-10 08/18/2009 <0.5 4 350 <5.0 2 1 160 <0.5 

12TW-2009-11 08/18/2009 <2.5 3 310 <25 6 8 460 <2.5 

12TW-2009-12 08/18/2009 <0.5 1 110 <5.0 7 22 370 <0.5 

12TW-2009-13 08/18/2009 <2.5 <2.5 100 <25 6 15 670 <2.5 

12TW-2009-14 08/18/2009 <0.5 <0.5 45 <5.0 2 2 340 <0.5 

12TW-2009-15 08/18/2009 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-16 08/18/2009 43 87 1,100 <25 120 100 1,000 <2.5 

12TW-2009-17 08/18/2009 9 15 510 <50 510 330 2,600 <5.0 

12TW-2009-18 08/18/2009 <0.5 4 40 <5.0 7 <0.5 32 <0.5 

12TW-2009-19 08/18/2009 <0.5 43 86 11 2 <0.5 3 <0.5 

12TW-2009-20 08/18/2009 <0.5 9 340 <5.0 23 5 240 <0.5 

12TW-2009-21 08/18/2009 <0.5 2 96 <5.0 3 <0.5 47 <0.5 

12TW-2009-22 08/18/2009 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-23 08/18/2009 <2.5 8 150 <25 480 69 640 3 

12TW-2009-24 08/18/2009 1,100 4,600 12,000 1,400 2,600 3,200 4,400 68 

12TW-2009-25 08/18/2009 43 84 1,900 <50 76 130 690 <5.0 

12TW-2009-26 08/18/2009 <0.5 2 71 <5.0 1 <0.5 7 <0.5 

12TW-2009-27 08/18/2009 <0.5 <0.5 7 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-28 08/18/2009 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-29 08/18/2009 <0.5 2 67 8 210 3 190 <0.5 

12TW-2009-30 08/18/2009 <0.5 3 210 13 280 <0.5 150 4 

12TW-2009-31 08/18/2009 <0.5 2 21 18 1 <0.5 2 <0.5 

12TW-2009-32 08/18/2009 <2.5 42 1,100 <25 8 <2.5 33 <2.5 

12TW-2009-33 08/18/2009 1,400 6,500 18,000 2,500 3,900 6,200 6,700 <50 

12TW-2009-34 08/18/2009 <2.5 15 360 <25 <2.5 <2.5 <2.5 <2.5 

12TW-2009-35 08/18/2009 1,400 4,800 15,000 <1,000 2,500 4,900 5,700 <100 

12TW-2009-36 08/18/2009 390 2,500 8,600 <500 2,100 1,300 2,800 <50 

12TW-2009-37 08/18/2009 <0.5 6 64 120 200 7 270 11 

12TW-2009-38 08/18/2009 <0.5 1 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-39 08/18/2009 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 7 <0.5 

12TW-2009-40 08/18/2009 <0.5 <0.5 11 <5.0 1 <0.5 78 <0.5 

12TW-2009-40R 08/18/2009 <0.5 <0.5 11 <5.0 1 <0.5 77 <0.5 

12TW-2009-41 08/18/2009 <0.5 <0.5 26 <5.0 1 <0.5 15 <0.5 

12TW-2009-41R 08/18/2009 <0.5 <0.5 28 <5.0 1 <0.5 15 <0.5 

12TW-2009-42 08/18/2009 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-42R 08/18/2009 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-43 10/30/2009 <0.5 0.11J <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-43R 10/30/2009 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-44 10/30/2009 <0.5 0.41J <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-45 10/30/2009 <0.5 0.16J 1.7J <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-46 10/30/2009 <0.5 0.26J <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

12TW-2009-47 10/30/2009 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 

70 
71

Appendix 6. Lithologic log and well-construction diagram of well 12PZ-07 at Solid Waste Management 

Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, August 2009 

(Randy Brand, Terry Environmental Services, written commun., 2009). 
72

Appendix 7. Lithologic log and well-construction diagram of well 12PZ-08 at Solid Waste Management 

Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, August 2009 

(Randy Brand, Terry Environmental Services, written commun., 2009). 
73

Appendix 8. Lithologic log and well-construction diagram of well 12PZ-09 at Solid Waste Management 

Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina August 2009 

(Randy Brand, Terry Environmental Services, written commun., 2009).
74

Appendix 9. Lithologic log and well-construction diagram of well 12PZ-10 at Solid Waste Management 

Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina, August 2009 

(Randy Brand, Terry Environmental Services, written commun., 2009). 

Vroblesky and others—Contaminant Movement Around a Permeable Reactive Barrier at SWMU12, Naval Weapons Station Charleston, 2009—Scientific Investigations Report 2010–5086