U.S. Department of the Interior

U.S. Geological Survey

Scientific Investigations Report 2009–5166

Prepared in cooperation with the Naval Facilities Engineering Command Southeast

Investigation of Contaminated Groundwater at Solid Waste 

Management Unit 12, Naval Weapons Station Charleston, 

North Charleston, South Carolina, 2008

Investigation of Contaminated Groundwater 

at Solid Waste Management Unit 12, 

Naval Weapons Station Charleston, 

North Charleston, South Carolina, 2008

By Don A. Vroblesky and Matthew D. Petkewich

Prepared in cooperation with the Naval Facilities Engineering Command Southeast

Scientific Investigations Report 2009–5166

U.S. Department of the Interior

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

KEN SALAZAR, Secretary

U.S. Geological Survey

Suzette M. Kimball, Acting Director

U.S. Geological Survey, Reston, Virginia: 2009

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., 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.
iii

Contents

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

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

Purpose and Scope ..............................................................................................................................1

Site History.............................................................................................................................................4

Methods...........................................................................................................................................................5

Data Collection......................................................................................................................................5

Tree Planting..........................................................................................................................................5

Hydrology of Solid Waste Management Unit 12.......................................................................................7

Groundwater Contamination........................................................................................................................9

Changes in Contaminant Concentration at the Permeable Reactive Barrier.............................9

Changes in Contaminant Concentration Over Time in Areas Other 

Than the Permeable Reactive Barrier...............................................................................10

Summary........................................................................................................................................................15

References....................................................................................................................................................16

Appendixes 1–4............................................................................................................................................17

Figures

1–5. Maps showing—

 1. Location of Naval Weapons Station Charleston and Solid Waste 

Management Unit 12, North Charleston, South Carolina................................................2

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

Naval Weapons Station Charleston, North Charleston, South Carolina......................3

 3. Locations of loblolly pine trees planted February 20, 2008, 

Solid Waste Management Unit 12, Naval Weapons 

Station Charleston, North Charleston, South Carolina....................................................6

 4. Surface water at Solid Waste Management Unit 12, Naval Weapons 

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

 5. Groundwater levels and trichloroethene concentrations in the 

surficial aquifer, Solid Waste Management Unit 12, Naval 

Weapons Station Charleston, North Charleston, South Carolina .................................8
iv

Tables

1. Summary of major field activities during February through August 2008 

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

North Charleston, South Carolina ..............................................................................................4

2. Summary of routine sampling measurements for groundwater, 

Solid Waste Management Unit 12, Naval Weapons Station Charleston, 

North Charleston, South Carolina, February–August 2008 ....................................................5

6. Graphs and map showing 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 

collapsed (abandoned) trench and existing PRB, Solid Waste 

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

South Carolina, April 2003 to August 2008 ..............................................................................10

7–10. Graphs showing—

 7. 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, Solid Waste Management Unit 12, Naval Weapons Station 

Charleston, North Charleston, South Carolina, April 2003 to August 2008.................11

 8. Concentrations of tetrachloroethene and trichloroethene 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 to August 2008...................................................................12

 9. Concentrations of 1,1,1-trichloroethane, 1,1-dichloroethane, and 

1,1-dichloroethene 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 to August 2008...................................................................13

 10. Concentrations of cis-1,2-dichloroethene and vinyl chloride 

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 to August 2008...................................................................14
v

Conversion Factors, Datums, and Abbreviated 

Water-Quality Units

Multiply By To obtain

Length

inch (in.) 2.54 centimeter (cm)

inch (in.) 25.4 millimeter (mm)

foot (ft) 0.3048 meter (m)

mile (mi) 1.609 kilometer (km)

Area

square foot (ft2) 929.0 square centimeter (cm2)

square foot (ft2) 0.09290 square meter (m2)

square inch (in2) 6.452 square centimeter (cm2)

section (640 acres or 1 square mile) 259.0 square hectometer (hm2

) 

square mile (mi2) 259.0 hectare (ha)

square mile (mi2) 2.590 square kilometer (km2) 

Volume

gallon (gal) 3.785 liter (L) 

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).
vi

Abbreviations

1,1-DCA 1,1-dichloroethane

1,1-DCE 1,1-dichloroethene

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

1,2-DCA 1,2-dichloroethane

cDCE cis-1,2-dichloroethene

mL/min milliliter per minute

NAVFAC SE Naval Facilities Engineering Command Southeast

NWS Naval Weapons Station

PCE tetrachloroethene

PCP pentachlorophenol

PRB permeable reactive barrier

RCRA Resource Conservation and Recovery Act

RFA RCRA Facility Assessment

RFI RCRA Facility Investigation

SWMU Solid Waste Management Unit

TCE trichloroethene

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 (VOC) groundwater contamination at Solid 

Waste Management Unit 12 at the Naval Weapons Station 

Charleston, North Charleston, South Carolina, beginning in 

2000. The primary contaminants of interest in the study are 

tetrachloroethene, 1,1,1-trichloroethane, trichloroethene, 

cis-1,2-dichloroethene, vinyl chloride, 1,1-dichloroethane, and 

1,1-dichloroethene. Engineered remediation aspects at the site 

consist of a zero-valent-iron permeable reactive barrier (PRB) 

installed in December 2002 intercepting the contamination 

plume and a phytoremediation test stand of loblolly pine trees 

planted in the source area in May 2003. The U.S. Geological 

Survey planted an additional phytoremediation test stand of 

loblolly pine trees on the upgradient side of the southern end 

of the PRB in February 2008. At least once during the summer, however, the trees were inadvertently mowed during 

lawn cutting activity.

The PRB along the main axis of the contaminant plume 

appears to be actively removing contamination. In contrast 

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

of the PRB indicate that contaminants are moving around 

the PRB. 

Concentrations in wells upgradient from the PRB 

showed a general decrease in VOC concentrations. VOC 

concentrations in some wells in the forest downgradient 

from the PRB showed a sharp increase in 2005, followed by 

a decrease in 2006. Farther downgradient in the forest, the 

VOC concentrations began to increase in 2007 and continued 

to increase into 2008. The VOC-concentration changes in 

groundwater beneath the forest appear to indicate movement 

of a groundwater-contaminant pulse through the forest. It also 

is possible that the data may represent lateral shifting of the 

plume in response to changes in groundwater-flow direction.

Introduction

Groundwater contamination by 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 (fig. 1). 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. The investigation presently focuses on monitoring engineered and natural 

attenuation. The engineered remediation consists of phytoremediation and a permeable reactive barrier (PRB) consisting 

of zero-valent iron (ZVI). 

The primary VOCs of concern are chlorinated solvents. 

Chlorinated parent compounds, such as tetrachloroethene 

(PCE) and 1,1,1-trichloroethane (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 underground storage 

tank (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). Trichloroethene (TCE) probably is an original contaminant as well as a 

dechlorination or transformation product. Other VOCs present 

at SWMU12 as probable breakdown products include cis-1,2-

dichloroethene (cDCE); vinyl chloride (VC); 1,1-dichloroethene (1,1-DCE); and 1,1-dichloroethane (1,1-DCA).

Purpose and Scope

The purpose of this report is to present the findings 

and field activities of the ongoing USGS and NAVFAC SE 

investigation of groundwater contamination at SWMU12 with 

emphasis on the period from February to August 2008. Appendixes 1 to 4 summarize well-construction, water-level, and 

water-quality data for SWMU12 from 1998 to August 2008.

Investigation of Contaminated Groundwater at Solid 

Waste Management Unit 12, Naval Weapons Station 

Charleston, North Charleston, South Carolina, 2008

By Don A. Vroblesky and Matthew D. Petkewich
2 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

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 

Base from U.S. Geological Survey

1:24,000 scale digital line graphs,

Kittredge, S.C., Ladson, S.C.,

Mount Holly, S.C., and North

Charleston, S.C., 1979

Figure 1. Location of Naval Weapons Station Charleston and Solid Waste Management Unit 12 (SWMU 12),

North Charleston, South Carolina.

Charleston

Figure 1. Location of Naval Weapons Station Charleston and Solid Waste Management Unit 12, North Charleston, South Carolina. 
Introduction 

3

Building 88 

(demolished) 

Building 33 

(demolished) 

Building 449 

Permeable

Reactive 

Barrier

Northern 

Marsh 

Eastern Marsh 

SWMU12

Forest

0 2 5 5 0 7 50 5

100 FEET

25 METERS 10 15 20

Non-Forested

Area

Paved 

Area 

Forest

Dirt Road

Approximate area

thought to be affected

by groundwater

contamination

Area shown in figure 3

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 

EXPLANATION

Approximate area of engineeredphytoremediation test plotusing loblolly pine planted May 2003Monitoring well and well number 12MW-03S

Approximate area of engineeredphytoremediation test plots using loblolly pine plantedFebruary 2008

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

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

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 appear to be related to 

former degreasing operations and a leaking UST located in the 

southeastern corner of former building 88 (fig. 2). 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 milligrams per liter (mg/L; Tetra 

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

measured, listed in order of decreasing concentration, were 

1,1-DCA at 84,300 micrograms per liter (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-dichloroethane (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 feet (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 ordinance-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 

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).

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. 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 (fig. 2). A second 

engineered remediation approach is a grove of loblolly pine 

(Pinus taeda) saplings in the source area that were planted 

in May 2003. 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 “fast-grow” loblolly pine trees on the southwestern side of 

the PRB (fig. 2). Summaries of investigative activities at the 

site are available for the periods 2000 to 2003 (Don Vroblesky, 

U.S. Geological Survey, written commun., 2003), October 2003 to October 2004 (Vroblesky and others, 2004), 

October 2004 to July 2006 (Vroblesky and others, 2007a), 

and October 2006 to November 2007 (Vroblesky and others, 

2008). Table 1 contains a summary of field activities from 

February to August 2008. 

Table 1. Summary of major field activities during February 

through August 2008 at Solid Waste Management Unit 12, Naval 

Weapons Station Charleston, North Charleston, South Carolina.

Date Activity

Water-level monitoring

May 5, 2008 Synoptic water-level measurements.

August 28, 2008 Synoptic water-level measurements.

Monthly 

maintenance

Continuous monitoring over various time 

intervals in one well.

Well leveling

June 12, 2008 A new measuring-point altitude at well 12PZ-01 

was determined by differential leveling 

because of changes to the stand pipe. A recheck 

of the datum for nearby wells also was done.

Monitoring groundwater chemistry

May 5–6, 2008 Sample collection.

August 14, 2008 Sample collection.

Phytoremediation

February 20, 2008 Planted 35 loblolly pines on the upgradient side 

of the permeable reactive barrier at the southern end of the barrier.

May 5, 2008 Mulch was spread around the trees for weed 

control and to highlight their location.
Methods 5

Methods

This investigation used standard methods for data collection and tree installation during 2008. The following sections 

discuss specifics associated with the methodologies.

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 but 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, 2007a). The nomenclature suffixes “S,” “I,” and “D” 

designate shallow, intermediate, and deep depths, respectively. 

The “S” wells generally are screened to total depths below 

ground surface of about 11.5 to 18 ft. The single “I” well is 

screened from 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-inchdiameter well), wells designated with the prefix “12PZ-“ 

indicate 1-inch-diameter wells. The “12PZ-” wells 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, 2007b). 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 100–200 milliliters per minute 

(mL/min), 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 flowthrough 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. Solutes routinely 

analyzed are listed in table 2. Of these solutes, potassium 

provides relatively little information that aids in understanding 

the contamination at this site, making it a constituent that can 

be eliminated from future monitoring. 

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. Potentiometric maps generated from the data provided 

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

contained a Solinst Levelogger, which measured continuous 

water levels. 

Tree Planting

On February 20, 2008, the USGS planted 35 “fast-grow” 

loblolly pine whips (fig. 3). The tree locations were targeted 

at areas where groundwater contamination had not yet moved 

around the southern end of the PRB. A “ground-hog” boring 

tool was used to excavate each planting hole to a depth of 

3 ft using 4-inch-diameter augers. The sediment consisted of 

silty sand to clay sand, underlain by clay at a depth of about 

2 ft. Three planting holes near the PRB contained water above 

the clay. The rest of the boreholes were dry. A water sample 

collected from planting-hole A5 (fig. 3) showed no concentrations of target VOCs. Field personnel measured water levels 

in the boreholes and in nearby wells. Preplanting hole preparation consisted of scoring the sidewalls to roughen the surface 

Table 2. Summary of routine sampling measurements 

for groundwater, Solid Waste Management Unit 12, Naval 

Weapons Station Charleston, North Charleston, South Carolina, 

February–August 2008.

[*, cations were calcium, magnesium, manganese, and potassium]

Solutes Other field measurements

Carbon dioxide Alkalinity

Cations* pH

Chloride, sulfate Pumping rate 

Dissolved oxygen Specific conductance

Ferrous iron Temperature

Hydrogen sulfide

Methane, ethane, ethene

Total organic carbon 

Volatile organic compounds
6 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

#

12MW-28S

12MW-28D

12MW-26S

12MW-25S

12MW-25D

12MW-24S

12MW-24D

12MW-23S

12MW-23D

12MW-22S

12MW-22D

12MW-21S

12MW-21D

D0 C2 B5

A5

C24

B26

B20

B16

C8.5 A15

C5.4 C8.1

C5.2

C2.2

B9.1

A8.2

C19.5

C15.9

C12.4

C1.5

C25.9

C22.3

C18.9

C15.3

C11.5

C1.2

B29.5

B22.9

B12.7

A29.2

A25.7

A22.1

A18.7

D3 A11.4

Explanation

+

# Trees planted February 20, 2008 

and identifier

A Monitoring well and name

Permeable Reactive Barrier

Collapsed trench

0 1.25 2.5 Meters

0 5 10 20 Feet

A5

12MW-26S

Paved Area

Dirt Road

Figure 3. Locations of loblolly pine trees planted February 20, 2008, Solid Waste Management Unit 12, Naval Weapons 

Station Charleston, North Charleston, South Carolina.
Hydrology of Solid Waste Management Unit 12 7

and then backfilling the holes with native soil to a depth of 

about 0.5 to 1 ft. Planting the trees involved placing a single 

tree in each hole and backfilling and watering each (fig. 3). 

At least once during the summer, the trees were inadvertenly 

mowed during lawn-cutting activity by non-USGS personnel. 

In response, additional mulch was placed around each tree and 

surveyor’s flags were placed at the tree locations. By the end 

of the summer, some of the trees had not recovered. 

Hydrology of Solid Waste 

Management Unit 12

SWMU12 is located on a topographically low area. 

Surface-water features nearly surround the site (fig. 4). Temporary borings from the shoreline to approximately 30 ft into 

the eastern marsh showed the presence of a confining bed 

separating the surface water from the aquifer, indicating that 

the degree of connectivity between groundwater at SWMU12 

and the eastern marsh is low (Vroblesky and others, 2007a). 

Marshes are present over much of the area surrounding 

SWMU12 (fig. 4). An investigation in 1999 determined that 

the surface water at the site is influenced by tides; however, 

the tidal influence is small (0.02 ft; Tetra Tech NUS, Inc., 

2000a). The reason that the tidal influence is relatively small 

is that the marshes are separated from the tidal Cooper River 

by a retention wall that maintains marsh levels at a higher 

stage than the mean stage of the Cooper River. In addition, the 

marshes are a series of ponds separated from each other by 

berms, further limiting water exchange among the marshes. 

George Pond connects to a tidally influenced area farther 

southeast by a conduit through the berm. 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, 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, 2007a). The overlying clay appears to be continuous over most of the site and 

functions as a confining bed for the surficial aquifer. 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, 

2007a). 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 suface in the surficial 

0 75 150 300 Meters 

0 500 1,000 

0 75 150 300 Meters 

0 500 1,000 Feet 

3

Northern 

Marsh Eastern Marsh 

Cooper 

River 

George Pond 

SWMU12 

Drainage to 

Cooper 

River 

George 

Pond 

Drainage 

Basemap photograph accessed from www.maps.google.com, November 1, 2006

Figure 4. Surface water at Solid Waste Management Unit 12 (SWMU12), Naval Weapons Station Charleston, North Charleston, 

South Carolina.
8 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC Building 88 (demolished) Building 33 (demolished) Building 449 Northern Marsh Eastern Marsh SWMU 12 Forest

0 2 5 5 0 7 50 5

1 0 0 F E E T

2 5 M E T E R S 1 0 1 5 2 0

Grass 

Pavement 

Forest

Dirt Road Permeable 

reactive 

barrier

2.51

1.63 

<0.25 μg/L 

1,210 μg/L 

42.3 μg/L 

212 μ

1,480 

g/L 

μg/L 

4.84 μg/L

1,160 μg/L

1.73

33.2 μg/L 

 5,000 μg/L

165 μg/L 

484 μg/L

898 μg/L 

597 μg/L

132 μg/L

<0.25 μg/L

1.59 

2.28

1.47 

1.49 

1.68

1.62 

1.56 

1.60 

1.65

1.55 

1.61 

1.45 1.32 

1.44 1.42

Not measured

-0.21 

1.65 

1.67

1.34

1.39

2.05 

3.15 

3.14 

3.13 

1.6

1.2

1.0

0.8

0.6

0.4

0.2

0.0

1.4

1.8

2.2

1.37 

2.0

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-30S 

12MW-29S 

12PZ-01 

0 2 5 5 0 7 5

0 5

1 0 0 F E E T

2 5 M E T E R S 1 0 1 5 2 0

EXPLANATION

Monitoring well and well number, with water-table altitude, in feet above NAVD 88, May 5, 2008 and groundwater trichloroethene concentration, in micrograms per liter, May 5-6, 2008 

 Not all wells used for this water-table map 

were sampled in May 2008.

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

12MW-13S

1.4 Water-table altitude contour,

May 5, 2008. Interval variable as shown. Datum is North American Vertical Datum of 1988 (NAVD 88). Dashed where inferred

1.424.84 μg/L

Figure 5. Groundwater levels (May 5, 2008) and trichloroethene (TCE) concentrations (May 5–6, 2008) in the surficial aquifer, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina. 
Groundwater Contamination 9

aquifer, oriented approximately along the axis of groundwater 

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

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

in August 2004, the ponds north of SWMU12 partly drained, 

and thereafter, well 12MW-08S typically had the lowest water 

level at the site (Vroblesky and others, 2007a; fig. 5). The 

change may have resulted in a shift to a more northeasterly 

direction of groundwater flow. 

Groundwater Contamination

The groundwater contamination, consisting of chlorinated aliphatic VOCs, extends eastward in the surficial aquifer 

from former building 88 (fig. 5). The orientation and axis 

of the plume was determined from well sampling and from 

temporary push-technology wells installed during previous 

investigations. Plume maps are available for time periods in 

which more extensive sampling was available than during the 

time period that is focused on by this report (Tetra Tech NUS, 

Inc., 2000a,b; Don Vroblesky, U.S. Geological Survey, written 

commun., 2003; Vroblesky and others, 2007a,). 1,1,1-TCA 

and PCE are parent contaminants and were found in relatively 

high concentrations in groundwater adjacent to the eastern 

side of former building 88 and the former location of the UST. 

TCE probably is present both as a parent contaminant and as a 

dechlorination product. Many of the less chlorinated compounds, such as cDCE and VC, probably are transformation 

products of these parent compounds. At least one compound, 

however, 1,1-DCE, is an abiotic derivative of 1,1,1-TCA 

(Vogel, 1994). 

The most areally extensive groundwater-quality data 

were collected in August 2001. During that period, the USGS 

collected groundwater samples from monitoring wells, and 

Tetra Tech NUS, Inc., collected groundwater samples from 

temporary wells. Data indicate that the highest concentrations of 1,1,1-TCA, PCE, and TCE in groundwater were 

near former building 88, approximately 10 to 30 ft north, 

northwest, and northeast of well 12MW-10S (David Beverly, 

CH2M Hill Constructors, Inc., written commun., 2003; Don 

Vroblesky, U.S. Geological Survey, written commun., 2003). 

Maximum measured concentrations were 443,000 μg/L of 

1,1,1-TCA; 155,000 μg/L of 1,1-DCA; 20,300 μg/L of PCE; 

and 86,700 μg/L of TCE. VC was present at 2,500 μg/L; 

thus, the area near former building 88 likely is the source area 

(fig. 2). Groundwater contamination extends to a depth of at 

least 25.25 ft (the top of the well screen at 12MW-28D), as 

evidenced by consistent low concentrations of 1,1-DCA in 

groundwater at well 12MW-28D and possibly at well 12MW03D along the axis of the contamination. 

Although low concentrations of VOCs are present in the 

groundwater north of the source area at well 12MW-09S, the 

primary direction of groundwater-contamination transport is 

approximately eastward from the source area (figs. 2, 5). A 

PRB consisting of ZVI, installed in December 2002, intercepts 

the contamination. A trench upgradient from the present location of the PRB was originally intended as the PRB location 

(fig. 3), but the trench collapsed on November 11, 2002, possibly resulting in localized diversion of contaminated groundwater transport (Vroblesky and others, 2007a). 

Changes in Contaminant Concentration at the 

Permeable Reactive Barrier

Contaminant concentrations changed in some wells 

during the study period near the PRB. The central part of the 

PRB along the main axis of the contaminant plume, as defined 

in previous investigations (Tetra Tech NUS, Inc., 2000a,b; 

David Beverly, CH2M Hill Constructors, Inc., written commun., 2003; Don Vroblesky, U.S. Geological Survey, written commun., 2003), appears to be actively mitigating the 

contamination. VOC concentrations decreased substantially 

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

(fig. 6A) along the major axis of the contaminant plume following installation of the PRB and continued to decrease 

into 2008. During much of this time (2003–2006), the VOC 

concentrations directly upgradient from the PRB along the 

approximate same axis of the contaminant plume did not 

change substantially (well 12MW-28S). VOC concentrations 

on the upgradient side of the PRB at well 12MW-28S generally began to decline in 2006 and continued to decline through 

2008 (fig. 6B).

Although some level of PRB occlusion probably has 

taken place, there is no obvious evidence of groundwater 

mounding on the upgradient side near the center of the PRB. 

The lack of groundwater mounding is evidenced by the fact 

there has not been a consistent increase in water levels at 

upgradient well 12MW-28S relative to the surrounding wells 

since the wells were first measured in 2003 (12MW-21S, 

12MW-22S, 12MW-23S, 12MW-27S, 12MW-28D, 12MW21D, and 12MW-22D). In addition, the relatively consistent 

concentrations of contaminants in well 12MW-18S at the 

northern end of the PRB indicate that it is unlikely that additional contamination is being channeled around the northern of 

end of the PRB (fig. 7C).

In contrast to the center of the PRB, data from the southern end of the PRB indicate that contaminants are moving 

around the PRB. Evidence for movement of contamination 

around the southern end of the PRB is the sharp increase in 

concentrations of TCE, 1,1-DCE, and 1,1-DCA in groundwater south of the PRB at well 12MW-26S (figs. 7A, 6C) 

beginning in 2004. The occasional low concentrations found 

at well 12MW-26S (September 2006, May 2008) may reflect 

sampling bias or lateral shifts in the relatively narrow plume. 

A corresponding sharp decline in 1,1-DCE and TCE concentrations at well 12MW-23S (fig. 7B) in 2003–2004, along 

the southern upgradient side of the PRB, implies a relation 

between contaminant loss at well 12MW-23S and contaminant 

gain at well 12MW-26S. Following the initial concentration 

decline after construction of the PRB, concentrations of some 
10 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

VOCs increased at well 12MW-23S (fig. 7B). In particular, 

the 1,1-DCE concentration in groundwater at well 12MW-23S 

during May 2008 was almost twice the 1,1-DCE concentration 

immediately following PRB installation in 2003 (fig. 7B). The 

reason for the 1,1-DCE concentration increase on the upgradient side of the PRB at well 12MW-23S is not yet clear. 

Changes in Contaminant Concentration Over 

Time in Areas Other Than the Permeable 

Reactive Barrier

Substantial changes in groundwater-contaminant concentrations took place in groundwater at some monitoring wells 

at SWMU12 during this investigation (figs. 8, 9, 10). The 

changes may be from a variety of influences, including pulse 

release from source areas, biodegradation, phytovolatilization, 

and possible reversal of groundwater flow in downgradient 

areas near the marsh (Vroblesky and others, 2004, 2007a). 

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

VOC concentrations of PCE and 1,1-DCE fluctuated during 2005 to 2008 (figs. 8A, 9A), possibly reflecting irregular 

releases of sorbed contaminants from the source area or lateral 

movement of the plume. Groundwater concentrations of 

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

decline from 2002 to 2008 (figs. 9A, 10A). 

Immediately downgradient from the source area, VOC 

concentrations at well 12MW-03S have continued to decrease 

since about 2002 (figs. 8B, 9B, 10B). The highest measured 

VOC concentration at well 12MW-03S during 2008 was 

cDCE at 491 μg/L, which represents a substantial decrease 

from the maximum cDCE concentration of 15,000 μg/L in 

December 2001.

B. 12MW-28S

2003 2004 2005 2006 2007 2008

Volatile organic compounds,

in micrograms per liter

0

5,000

10,000

15,000

20,000

25,000

A C. . 12MW-22S

Volatile organic compounds,

in micrograms per liter

0

5,000

10,000

15,000

20,000

2003 2004 2005 2006 2007 2008

1,1,1-trichloroethane

1,1-dichloroethane

1,1-dichloroethene

trichloroethene

EXPLANATION

Open symbols indicate that the

constituent was not detected.

The indicated value was the

detection limit

Wells

Permeable reactive barrier

Collapsed trench

EXPLANATION

Figure 6. Concentrations of selected volatile organic 

compounds in groundwater at wells (A) 12MW-22S and 

(B) 12MW-28S, near the permeable reactive barrier (PRB), 

and (C) locations of wells and collapsed (abandoned) 

trench and existing PRB, Solid Waste Management Unit 12, 

Naval Weapons Station Charleston, North Charleston, 

South Carolina, April 2003 to August 2008.
Groundwater Contamination 11

VOC concentrations in groundwater also changed in 

some wells in the forested area in the middle part of the plume. 

Despite the decrease in TCE and 1,1-DCE concentrations 

(figs. 8C, 9C) at well 12MW-05S, PCE concentrations, which 

had been relatively uniform since 2002 (usually between 

300 and 700 μg/L), sharply increased in 2005 to greater than 

2,000 μg/L before declining again in June 2006 and continuing 

the decline into 2008 (fig. 8C). Increasing PCE and decreasing 

TCE and 1,1-DCE concentrations also were observed at well 

12MW-29S (figs. 8F, 9F), approximately 67 ft downgradient 

from well 12MW-05S, during about the same timeframe as 

well 12MW-05S. The PCE concentrations at well 12MW-29S 

began sharply declining in 2006 and continued to decline 

in 2008. The source of the change is unknown; however, 

the consistency of data implies that concentration changes 

in wells 12MW-05S and 12MW-29S share a similar cause. 

Further downgradient at well 12MW-12S, VOC concentrations began rising in late 2006 and continued to rise in 2008 

(figs. 8D, 9D, 10D). The data appear to reflect migration of a 

contaminant pulse through the forest. It also is possible that 

the concentration changes may reflect a lateral shift in the 

axis of the contamination plume, as might be expected from 

the change in the piezometric surface (Vroblesky and others, 

2007a). At the downgradient end of the plume, data collected 

at well 12MW-13S showed declines in TCE and 1,1-DCE 

concentrations from 2006 to 2008 (figs. 8G, 9G).

Well 12MW-09S was sampled in November 2007. Data 

from the sampling and a graph of the 1,1-DCE and 1,1-

DCA concentrations in groundwater during 2000–2007 were 

presented in a previous report (Vroblesky and others, 2008). 

The data showed that concentrations for those constituents 

declined from greater than 100 μg/L in 2000 to approximately 

20 to 30 μg/L in 2003, remained relatively constant between 

2003 and 2005, and resumed the decline during 2006–2007 

(Vroblesky and others, 2008). Concentrations in November 2007 were less than 10 μg/L.

C. 12MW-18S (Northern end of PRB)

2003 2004 2005 2006 2007 2008

Volatile organic compounds,

in micrograms per liter

0

100

200

300

400

500

600

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

2003 2004 2005 2006 2007 2008

Volatile organic compounds,

in micrograms per liter

0

2,000

4,000

6,000

8,000

10,000

12,000

B. 12MW-23S (Upgradient from PRB

near well 12MW-26S)

Year

2003 2004 2005 2006 2007 2008

Volatile organic compounds,

in micrograms per liter

0

1,000

2,000

3,000

4,000

5,000

1,1,1-trichloroethane

1,1-dichloroethane

1,1-dichloroethene

trichloroethene

EXPLANATION

Open symbols indicate that the

constituent was not detected.

The indicated value was the

detection limit

Year

Year

PRB is permeable reactive barrier 

Figure 7. 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 permeable reactive barrier (PRB), Solid Waste Management Unit 12, 

Naval Weapons Station Charleston, North Charleston, South Carolina, April 2003 to August 2008.
12 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

B. 12MW-03S

2000 2002 2004 2006 2008

P

C

E and T

C

E,

in micrograms per liter

0

4,000

8,000

12,000

16,000

20,000 A. 12MW-10S

2000 2002 2004 2006 2008

P

C

E and T

C

E,

in micrograms per liter

0

2,000

4,000

6,000

8,000

10,000

G. 12MW-13S

Year

2000 2002 2004 2006 2008

P

C

E, in

micrograms per liter

0

5

10

15

20

T

C

E, in

micrograms per liter

0

10

20

30

40

50

60

E. 12MW-17S

2000 2002 2004 2006 2008

P

C

E, in

micrograms per liter

0

20

40

60

80

100

120

T

C

E, in

micrograms per liter

0

200

400

600

800

Upgradient Part of Groundwater Contamination Plume

Middle Part of Groundwater Contamination Plume

C. 12MW-05S

2000 2002 2004 2006 2008

P

C

E, in

micrograms per liter

0

1,000

2,000

3,000

4,000

T

C

E, in

micrograms per liter

0

10,000

20,000

30,000

D. 12MW-12S

2000 2002 2004 2006 2008

P

C

E, in

micrograms per liter

0

20

40

60

80

100

120

140

T

C

E, in micrograms per liter

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

Year

2000 2002 2004 2006 2008

P

C

E, in

micrograms per liter

0

200

400

600

800

1,000

T

C

E, in

micrograms per liter

0

1,000

2,000

3,000

4,000

5,000

6,000

Trichloroethene (TCE)

Figure 8. Concentrations of tetrachloroethene (PCE) and trichloroethene (TCE) 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 to August 2008.
Groundwater Contamination 13

Upgradient Part of Groundwater Contamination Plume

Middle Part of Groundwater Contamination Plume

C.12MW-05S

2000 2002 2004 2006 2008

micrograms per liter

0

500

1,000

1,500

2,000

2,500

3,000

1,1-D

C

A and 1,1-D

CE, in

micrograms per liter

0

5,000

10,000

15,000

20,000

B.12MW-03S

2000 2002 2004 2006 2008

micrograms per liter

0

20,000

40,000

60,000

80,000

100,000

1,1-D

C

A and 1,1-D

CE, in

micrograms per liter

0

10,000

20,000

30,000

40,000

50,000

A.12MW-10S

2000 2002 2004 2006 2008

1,1,1-T

C

A, in micrograms per liter

0

10,000

20,000

30,000

40,000

1,1-D

C

A and 1,1-D

CE, in

micrograms per liter

0

10,000

20,000

30,000

40,000

D.12MW-12S

2000 2002 2004 2006 2008

micrograms per liter

0

50

100

150

200

1,1-D

C

A and 1,1-D

CE, in

micrograms per liter

0

200

400

600

800

1,000

E.12MW-17S

2000 2002 2004 2006 2008

micrograms per liter

0

20

40

60

80

100

1,1-D

C

A and 1,1-D

CE, in

micrograms per liter

0

100

200

300

400

G.12MW-13S

Year

2000 2002 2004 2006 2008

micrograms per liter

0

20

40

60

80

100

1,1-D

C

A and 1,1-D

CE, in

micrograms per liter

0

20

40

60

80

100

120

140

Downgradient Part of Groundwater Contamination Plume

F.12MW-29S

Year

2000 2002 2004 2006 2008

micrograms per liter

0

100

200

300

400

500

1,1-D

C

A and 1,1-D

CE, in

micrograms per liter

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-T

C

A, in 1,1,1-T

C

A, in

1,1,1-T

C

A, in

1,1,1-T

C

A, in

1,1,1-T

C

A, in

1,1,1-T

C

A, in

Figure 9. Concentrations of 1,1,1-trichloroethane (1,1,1-TCA), 1,1-dichloroethane (1,1-DCA), and 1,1-dichloroethene (1,1-DCE) 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 to August 2008.
14 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

Upgradient Part of Groundwater Contamination Plume

Middle Part of Groundwater Contamination Plume

D. 12MW-12S

2000 2002 2004 2006 2008

cD

C

E, in

micrograms per liter

0

20

40

60

80

100

120

140

160

180

V

C, in

micrograms per liter

0

20

C. 12MW-05S

2000 2002 2004 2006 2008

cD

C

E, in

micrograms per liter

0

500

1,000

1,500

2,000

2,500

3,000

V

C, in

micrograms per liter

0

100

200

300

400

500

B.12MW-03S

2000 2002 2004 2006 2008

cD

C

E, in

micrograms per liter

0

4,000

8,000

12,000

16,000

V

C, in

micrograms per liter

0

4,000

8,000

12,000

16,000

20,000

A. 12MW-10S

2000 2002 2004 2006 2008

cD

C

E, in

micrograms per liter

0

2,000

4,000

6,000

8,000

10,000

12,000

14,000

V

C, in

micrograms per liter

0

500

1,000

1,500

2,000

2,500

E. 12MW-17S

Year

2000 2002 2004 2006 2008

cD

C

E, in

micrograms per liter

0

10

20

30

40

50

60

70

V

C, in

micrograms per liter

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

Year

2000 2002 2004 2006 2008

cD

C

E, in

micrograms per liter

0

100

200

300

400

500

600

700

V

C, in

micrograms per liter

0

20

40

60

80

Figure 10. Concentrations of cis-1,2-dichloroethene (cDCE) and vinyl chloride (VC) 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 to August 2008.
Summary 15

Summary

The U.S. Geological Survey 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 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 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 UST. 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 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 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 shown a substantial increase since 2004 at 

well 12MW-23S, upgradient from the PRB near well 12MW26S. In an effort to test low-cost alternatives to assist in remediating groundwater contamination along the southern part of 

the PRB, the USGS planted 35 loblolly pines in that area in 

February 2008.

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 showed marked fluctuations 

in concentration during 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 2006–2008 may represent passage of 

the 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 showed continuous declines in TCE and 1,1-DCE 

concentrations from 2006 to August 2008. 
16 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

References

Barcelona, M., Wehrmann, H.A., and Varljen, M.D., 1994, 

Reproducible well-purging procedures and VOC stabilization criteria for ground-water sampling: Groundwater, v. 32, 

p. 12–22. 

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. 

Kearney/Centaur, 1988, Interim RCRA facility assessment 

report, Naval Weapons Station, Charleston, South Carolina: 

Consultant’s report, May 1988.

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.

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, text, 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. 

Vogel, T.M., 1994, Natural bioremediation of chlorinated 

solvents, in Norris, R.D., and Matthew, J.E., eds., Handbook of bioremediation: Boca Raton, FL, Lewis Publishers, 

p. 201–224.

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., 2007a, 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., Casey, C.C., and Lowery, M.A., 2007b, 

Influence of dissolved oxygen convection on well sampling: 

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

p. 49–58.

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, p. 70.
Appendixes 1–4

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

Station Charleston, North Charleston, South Carolina.........................................................18

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 2008...........................................................................................................20

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 August 2008 ......................................................................................................30

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 August 2008 .........................................53
18 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC Appendix 1. Well-construction data, Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, South Carolina.—Continued [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] Well name Installation date State Plane Northing coordinate (NAD 83, feet) State Plane Easting coordinate (NAD 83, feet) Well diameter (in.) Top of riser elevaton (ft rel. NAVD 88) Ground elevation (ft rel. NAVD 88) Stand- pipe height (ft) Screen length (ft) Depth of screen top (ft bgs) Depth of screen bottom (ft bgs) Depth of screen top (ft btoc) Depth of screen bottom (ft btoc) Elevation of screen top (ft rel. NAVD 88) Elevation of screen bottom (ft rel. NAVD 88) 12MW-01D 2/25/1998 405035.719 2324888.000 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 2324882.500 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 2325292.250 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 2325293.000 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 2325320.750 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 2325317.000 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 2325183.250 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 2325181.250 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 2325434.250 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 2325429.750 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 2325438.000 2 7.95 5.92 2.03 10.00 4.00 14.00 6.03 16.03 1.92 –8.08 12MW-06D 8/4/1999 405143.969 2325670.000 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 2325674.000 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 2325517.750 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 2325523.250 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 2325630.500 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 2325633.250 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 2325275.750 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 2325270.000 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 2325274.000 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 2325576.500 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 2325573.250 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 2325574.750 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 2325571.000 2 8.47 5.16 3.31 5.00 8.00 13 11.31 16.31 –2.84 –7.84 12MW-13S 8/23/2001 405124.125 2325665.000 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 2325936.000 0.5 7.36 4.00 3.36 10.00 5.00 15.00 8.36 18.36 –11.00

12MW-15S* 8/20/2001 404999.770 2325854.880 0.5 7.62 4.40 3.22 10.00 5.00 15.00 8.22 18.22 –0.60 –10.6012MW-16S* 8/23/2001 404968.200 2325930.330 0.5 8.23 4.69 3.39 10.00 5.00 15.00 8.54 18.54 –0.31 –10.3112MW-17S 4/18/2002 405117.938 2325576.500 2 7.41 4.97 2.38 2.50 9 11.5 11.44 13.94 –4.03 –6.53
Appendix 1 19

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

Well name Installation date

State Plane 

Northing 

coordinate 

(NAD 83, feet)

State Plane 

Easting 

coordinate 

(NAD 83, feet)

Well 

diameter 

(in.)

Top of riser 

elevaton 

(ft rel. 

NAVD 88)

Ground 

elevation 

(ft rel. 

NAVD 88)

Standpipe 

height 

(ft)

Screen 

length 

(ft)

Depth of 

screen 

top 

(ft bgs)

Depth of 

screen 

bottom 

(ft bgs)

Depth of 

screen 

top 

(ft btoc)

Depth of 

screen 

bottom 

(ft btoc)

Elevation 

of screen 

top 

(ft rel. 

NAVD 88)

Elevation 

of screen 

bottom 

(ft rel. 

NAVD 88)

12MW-18S 1/23/2003 405192.000 2325350.250 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 2325355.500 1 10.86 8.49 2.37 10.00 25 35 27.37 37.37 –16.51 –26.5112MW-19S 1/16/2003 405172.156 2325357.000 1 10.81 8.54 2.27 5.00 10 15 12.27 17.27 –1.46 –6.4612MW-20D 1/24/2003 405178.656 2325362.500 2 10.54 8.30 2.24 10.00 23 33 25.24 35.24 –14.70 –24.7012MW-20S 1/23/2003 405175.531 2325364.750 2 10.50 8.24 2.26 5.00 10 15 12.26 17.26 –1.76 –6.7612MW-21D 1/16/2003 405110.750 2325375.750 1 9.90 7.85 2.05 10.00 24 34 26.05 36.05 –16.15 –26.1512MW-21S 1/16/2003 405115.813 2325374.500 1 9.74 7.63 2.11 5.00 10 15 12.11 17.11 –2.37 –7.3712MW-22D 1/27/2003 405110.844 2325381.000 2 10.13 7.88 2.25 10.00 24 34 26.25 36.25 –16.12 –26.1212MW-22S 1/28/2003 405119.688 2325378.500 2 9.88 7.58 2.30 5.00 10 15 12.30 17.30 –2.42 –7.4212MW-23D 1/22/2003 405078.469 2325379.250 2 9.62 7.37 2.25 10.00 26 36 28.25 38.25 –18.63 –28.6312MW-23S 1/21/2003 405082.875 2325378.500 2 9.67 7.43 2.24 5.00 13 18 15.24 20.24 –5.57 –10.5712MW-24D 1/15/2003 405079.969 2325386.250 1 9.73 7.45 2.28 10.00 25 35 27.28 37.28 –17.55 –27.5512MW-24S 1/15/2003 405084.031 2325385.750 1 9.65 7.38 2.27 5.00 13 18 15.27 20.27 –5.62 –10.6212MW-25D 1/21/2003 405081.594 2325393.750 2 9.17 6.96 2.21 10.00 26 36 28.21 38.21 –19.04 –29.0412MW-25S 1/21/2003 405085.531 2325393.250 2 9.17 6.96 2.21 5.00 13 18 15.21 20.21 –6.04 –11.0412MW-26S 1/21/2003 405059.594 2325392.500 2 9.11 6.90 2.21 5.00 13 18 15.21 20.21 –6.10 –11.1012MW-27D 1/22/2003 405174.281 2325346.750 2 10.94 8.70 2.24 10.00 23 33 25.24 35.24 –14.30 –24.3012MW-27S 1/23/2003 405169.531 2325348.250 2 11.01 8.80 2.21 5.00 10 15 12.21 17.21 –1.20 –6.2012MW-28D 1/27/2003 405106.906 2325368.250 2 9.64 7.39 2.25 10.00 23 33 25.25 35.25 –15.61 –25.6112MW-28S 1/28/2003 405111.875 2325366.250 2 9.60 7.32 2.28 5.00 10 15 12.28 17.28 –2.68 –7.6812MW-29S 7/19/2004 405114.750 2325506.250 2 7.38 5.28 2.10 2.25 9.75 12 11.85 14.10 –4.47 –6.7212MW-30S 7/22/2004 405115.438 2325515.500 2 8.64 5.22 3.42 2.25 9.75 12 13.17 15.42 –4.53 –6.7812PZ-01* 8/15/2002 405261.850 2325470.420 2 6.32 6.16 0.16 10.00 4.5 14.5 4.66 14.66 1.66 –8.3412PZ-03D 3/10/2004 405130.594 2325712.750 1 4.72 — — 2.5 — — 11.8 14.3 –7.08 –9.5812PZ-03S 3/8/2004 405130.438 2325709.750 1 5.45 — — 2.5 — — 7.5 10 –2.05 –4.5512PZ-04 2/20/2004 405184.625 2325737.500 1 5.55 — — 2.5 — — 15 17.5 –9.45 –11.9512PZ-05 2/19/2004 405118.969 2325753.500 1 4.34 — — 2.5 — — 12.23 14.73 –7.89 –10.3912PZ-06 2/20/2004 405060.969 2325734.500 1 4.87 — — 2.5 — — 14.9 17.4 –10.03 –12.53
20 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

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 2008.—Continued

[—, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988]

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

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

10/28/1999 4.19 4.19 4.16 4.11 4.12 4.13 4.22 4.20 3.95 — 4.06

8/3/2000 3.99 4.02 3.98 — 4.01 — 4.00 4.04 3.75 — 3.92

9/7/2000 — — — — — — — — — — 5.31

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

11/21/2002 5.19 5.17 5.29 5.36 5.32 5.43 — — 4.71 5.14 5.06

12/13/2002 4.72 4.72 4.68 4.69 4.68 4.70 4.77 4.74 4.25 4.56 4.50

2/4/2003 4.07 4.03 3.94 3.95 3.92 3.94 3.97 3.93 3.79 3.84 3.78

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

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

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

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

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

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

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
Appendix 2 21

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 2008.—Continued

[—, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988]

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

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

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

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

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

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

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

2/13/2004 3.80 3.83 3.65 3.65 3.65 3.68 3.48 3.96 3.22 3.47 3.41

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

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

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

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

7/26/2004 2.69 2.66 2.67 — 2.69 2.73 2.70 2.75 2.57 2.75 2.53

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

10/21/2004 3.16 3.13 2.91 — 2.94 2.96 3.01 3.04 2.94 2.85 2.77

11/29/2004 2.41 2.37 2.09 — 2.12 2.11 2.21 2.19 2.15 1.98 1.93

12/27/2004 2.64 2.63 2.28 — 2.28 2.32 2.33 2.40 2.14 2.10 2.04

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

2/17/2005 2.98 2.97 2.76 2.74 2.79 2.8 2.87 2.91 2.63 2.67 2.6

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

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

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

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

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

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

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

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

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

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

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

3/2/2006 4.29 4.29 4.20 4.20 4.22 4.25 4.26 4.39 3.79 4.12 4.05

3/30/2006 2.97 2.94 2.68 2.67 2.69 2.71 2.75 3.08 2.71 2.62 2.51

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

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

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

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

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

7/17/2007 0.84 0.85 — 0.69 0.71 0.72 0.74 0.76 1.05 0.65 0.59

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

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

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
22 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

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 2008.—Continued

[—, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988]

Date 12MW-06D 12MW-06S 12MW-07D 12MW-07S 12MW-08D 12MW-08S 12MW-09D 12MW-09S 12MW-10S 12MW-11D 12MW-11S

4/18/1998 — — — — — — — — — — — 

5/18/1998 — — — — — — — — — — — 

6/25/1998 — — — — — — — — — — — 

8/11/1999 2.41 1.63 2.66 2.13 2.43 2.58 2.30 2.26 — — — 

10/28/1999 3.69 3.56 3.84 4.07 3.70 3.74 4.04 4.09 — — — 

8/3/2000 3.40 3.42 3.56 3.88 — — 3.86 3.92 — — — 

9/7/2000 3.92 3.99 — 5.09 — — — 5.44 — — — 

10/12/2000 3.04 2.56 3.23 2.94 3.06 2.84 3.07 3.02 3.13 3.05 2.74

11/13/2000 2.22 1.54 2.37 1.90 2.28 2.11 2.12 2.02 2.10 2.10 1.76

1/12/2001 2.76 2.78 2.89 2.93 2.83 3.59 3.03 3.12 3.40 2.98 2.78

2/8/2001 2.71 2.64 2.86 2.83 2.77 3.40 2.91 2.94 3.16 — — 

3/14/2001 3.24 3.33 3.37 3.81 3.31 3.96 3.79 4.07 4.08 3.74 3.70

4/13/2001 3.18 2.92 3.36 3.29 3.28 3.37 3.39 3.47 3.52 3.36 3.09

5/14/2001 2.14 1.26 2.36 1.86 2.17 2.15 2.04 1.98 2.12 2.12 1.69

6/19/2001 2.30 1.70 2.54 2.18 2.30 2.41 2.30 2.29 2.52 2.30 1.99

7/19/2001 2.73 2.38 2.95 2.63 2.72 3.09 2.70 2.64 2.79 2.74 2.41

8/30/2001 2.39 1.57 2.61 2.03 2.42 2.43 2.19 2.10 2.22 2.21 1.83

9/27/2001 2.42 2.23 2.71 2.20 2.36 2.81 2.33 2.21 2.30 2.35 1.99

10/30/2001 1.76 1.30 1.95 1.17 1.75 1.57 1.36 1.20 1.27 1.41 1.02

11/27/2001 1.57 1.21 1.72 1.01 1.56 1.60 1.18 1.05 1.08 1.21 0.85

12/26/2001 1.69 1.48 1.87 1.29 1.68 1.48 1.41 1.33 1.36 1.44 1.11

1/22/2002 1.88 1.93 2.07 1.71 1.88 2.21 1.81 1.78 1.91 1.82 1.53

2/26/2002 2.08 2.08 2.20 1.95 2.06 2.51 2.04 2.05 2.17 2.04 1.78

5/3/2002 1.92 1.36 2.13 1.51 1.91 1.82 1.65 1.54 1.68 1.68 1.27

6/6/2002 1.41 0.61 1.63 0.74 1.38 1.00 0.98 0.81 0.92 1.02 0.58

7/12/2002 2.15 1.83 2.35 1.85 2.16 2.96 2.00 1.97 2.13 2.01 1.70

8/8/2002 1.85 1.12 2.07 1.33 1.84 2.08 1.50 1.34 1.49 1.55 1.14

8/26/2002 1.68 1.53 1.85 1.19 1.62 2.40 1.34 1.29 1.38 1.37 1.07

8/28/2002 1.92 2.05 2.09 1.60 1.87 2.99 1.79 1.82 1.85 1.81 1.55

9/9/2002 2.87 2.76 3.06 2.88 2.90 — 2.95 2.95 3.04 2.93 2.73

10/3/2002 3.54 3.59 3.78 4.10 3.66 3.88 4.11 4.21 4.27 4.06 4.00

11/21/2002 4.11 4.08 4.31 5.02 4.26 4.16 4.88 5.14 5.33 4.84 4.83

12/13/2002 3.81 3.72 3.97 4.45 3.94 4.07 4.42 4.64 4.76 4.36 4.32

2/4/2003 3.44 3.27 3.57 3.75 3.54 3.85 3.83 3.93 4.01 3.77 3.66

2/13/2003 3.36 3.27 3.51 3.77 3.46 3.75 3.80 3.89 4.02 3.74 3.68

2/20/2003 3.42 3.34 3.55 3.86 3.51 3.71 3.88 4.00 4.17 3.83 3.79

2/26/2003 3.48 3.39 3.57 3.94 3.58 3.77 3.93 4.32 4.17 3.88 3.81

3/25/2003 4.07 3.91 4.23 4.80 4.15 4.07 4.74 4.99 5.10 4.70 4.64

4/23/2003 3.52 3.17 3.71 3.67 3.61 3.39 3.75 3.80 3.89 3.73 3.50

5/27/2003 3.69 3.67 3.86 4.38 3.76 4.09 4.32 4.59 3.66 4.77 4.29

6/30/2003 3.26 2.81 3.44 3.26 3.34 3.37 3.38 3.39 3.51 3.37 3.10
Appendix 2 23

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 2008.—Continued

[—, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988]

Date 12MW-06D 12MW-06S 12MW-07D 12MW-07S 12MW-08D 12MW-08S 12MW-09D 12MW-09S 12MW-10S 12MW-11D 12MW-11S

8/4/2003 3.80 3.80 3.98 4.30 3.92 4.25 4.34 4.62 4.67 4.27 4.28

8/29/2003 2.91 2.22 3.10 2.76 2.97 2.85 2.89 2.85 2.95 2.87 2.57

9/30/2003 2.86 2.45 3.07 2.54 2.83 2.60 2.65 2.56 2.68 2.68 2.35

11/3/2003 2.71 2.53 2.92 2.61 2.69 3.27 2.71 2.72 2.84 2.70 2.45

12/8/2003 2.55 2.41 2.69 2.46 2.53 3.29 2.60 2.61 2.72 2.57 2.32

1/15/2004 2.56 2.39 2.71 2.50 2.56 3.33 2.62 2.63 2.73 2.60 2.33

2/13/2004 2.94 3.03 3.05 3.36 2.98 4.01 3.37 3.58 3.81 3.31 3.23

3/15/2004 2.99 2.76 3.14 3.13 3.09 3.76 3.21 3.25 3.36 3.17 2.98

4/21/2004 2.62 2.33 2.78 2.63 2.68 3.48 2.68 2.74 2.87 2.70 2.44

5/20/2004 2.46 1.76 2.60 2.24 2.54 3.18 2.41 2.37 2.42 2.39 2.03

6/21/2004 2.04 1.53 2.22 1.87 2.07 2.62 2.02 1.99 2.06 2.00 1.73

7/26/2004 2.59 2.47 2.71 2.53 2.67 3.81 2.65 2.67 2.78 2.62 2.41

9/15/2004 3.51 3.56 3.73 4.01 3.43 3.38 3.83 4.05 4.18 3.88 3.86

10/21/2004 2.78 2.61 3.07 2.84 2.60 1.91 2.70 2.79 3.03 2.80 2.65

11/29/2004 2.07 1.72 2.33 1.94 1.86 1.33 1.91 1.98 2.20 1.99 1.79

12/27/2004 2.01 2.01 2.26 2.05 1.74 1.98 2.01 2.17 2.48 2.04 1.91

1/25/2005 2.27 2.28 2.54 2.40 1.97 1.46 2.26 2.42 2.65 2.34 2.22

2/17/2005 2.45 2.53 2.71 2.66 2.2 1.86 2.49 2.63 2.91 2.57 2.44

3/24/2005 2.92 3.16 3.17 3.64 2.71 3.51 3.39 3.74 4.00 3.42 3.57

4/25/2005 2.64 2.25 2.91 2.67 2.43 1.34 2.56 2.62 2.82 2.64 2.47

5/31/2005 1.98 1.71 2.27 1.82 1.70 1.25 1.78 1.88 2.18 1.85 1.65

6/17/2005 2.12 1.55 2.45 1.88 1.79 0.51 1.76 1.80 2.05 1.91 1.66

7/21/2005 2.73 2.61 3.04 2.84 2.49 1.56 2.63 2.71 2.96 2.75 2.62

8/16/2005 3.47 3.65 3.74 4.07 3.46 3.06 3.78 4.02 4.20 3.88 3.94

9/29/2005 2.29 1.53 2.59 2.02 2.02 0.41 1.99 2.02 2.19 2.09 1.85

10/17/2005 3.02 2.93 3.32 3.10 2.82 2.03 2.96 3.02 3.23 3.07 2.92

12/1/2005 2.70 2.74 2.96 2.85 2.42 2.10 2.66 2.80 3.08 2.77 2.70

12/19/2005 3.17 3.35 3.38 3.88 2.99 3.69 3.64 4.00 4.31 3.68 3.84

1/26/2006 3.11 3.27 3.34 3.59 2.95 3.17 3.36 3.56 3.86 3.44 3.52

3/2/2006 3.42 3.57 3.61 4.07 3.31 3.43 3.87 4.11 4.38 3.90 3.97

3/30/2006 2.58 2.48 2.83 2.58 2.36 1.28 2.49 2.55 2.81 2.57 2.43

5/1/2006 2.01 1.49 2.29 1.76 1.75 0.36 1.74 1.74 1.95 1.81 1.58

5/31/2006 1.64 0.89 1.97 1.29 1.39 -0.26 1.31 1.30 1.50 1.41 1.14

6/29/2006 2.12 2.13 2.44 2.08 1.79 1.03 1.93 2.06 2.34 2.04 1.9

10/2/2006 1.43 2.78 2.65 2.11 2.01 0.58 1.97 1.97 2.17 2.11 1.93

5/21/2007 1.02 -0.13 1.34 0.43 0.79 -1.16 0.51 0.38 0.55 0.61 0.29

7/17/2007 1.13 0.22 1.46 0.67 0.84 -0.88 0.67 0.63 0.91 0.80 0.57

11/26/2007 1.85 1.37 2.15 1.58 1.61 -0.10 1.54 1.85 1.92 1.63 1.46

5/5/2008 2.66 1.34 2.23 1.63 1.60 -0.21 1.52 1.47 2.28 1.66 1.39

8/28/2008 2.74 1.37 2.17 1.55 1.43 -0.15 1.42 1.45 2.61 1.56 1.40
24 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

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 2008.—Continued

[—, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988]

Date 12MW-12D 12MW-12S 12MW-13S 12MW-14S 12MW-15S 12MW-16S 12MW-17S 12MW-18S 12MW-19D 12MW-19S 12MW-20D

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 — — 1.89 — — — — — — — — 

9/27/2001 2.47 2.00 2.11 — — — — — — — — 

10/30/2001 1.35 1.01 1.10 — — — — — — — — 

11/27/2001 1.19 0.86 0.95 1.75 0.64 0.81 — — — — — 

12/26/2001 1.46 1.11 1.20 2.00 1.28 1.26 — — — — — 

1/22/2002 1.81 1.56 1.61 2.07 1.70 1.35 — — — — — 

2/26/2002 2.06 1.78 1.85 2.23 1.86 1.65 — — — — — 

5/3/2002 1.70 1.29 1.36 — — — — — — — — 

6/6/2002 1.01 0.58 0.65 — — — — — — — — 

7/12/2002 2.01 1.69 1.74 2.22 0.07 1.60 — — — — — 

8/8/2002 1.55 1.13 1.20 1.98 0.16 1.19 — — — — — 

8/26/2002 1.32 1.04 1.10 1.89 1.20 0.99 1.10 — — — — 

8/28/2002 1.79 1.49 1.56 2.11 2.17 1.25 1.56 — — — — 

9/9/2002 2.95 2.75 2.77 2.97 2.26 2.66 — — — — — 

10/3/2002 4.06 4.01 3.94 3.38 2.61 3.26 4.00 — — — — 

11/21/2002 4.85 4.88 5.72 3.91 3.28 3.91 4.85 — — — — 

12/13/2002 4.37 4.38 4.22 3.65 3.09 3.62 4.34 — — — — 

2/4/2003 3.79 3.69 3.61 3.27 2.66 3.08 3.66 — — — — 

2/13/2003 3.70 3.70 3.61 — — — 3.66 3.80 3.88 3.91 3.79

2/20/2003 3.71 3.83 3.68 2.62 2.52 4.14 3.80 — — — — 

2/26/2003 3.88 3.84 3.46 3.30 2.84 3.21 3.82 3.96 4.04 4.02 4.04

3/25/2003 4.68 4.69 4.52 3.85 3.22 3.86 4.67 4.96 4.93 4.95 4.92

4/23/2003 3.72 3.55 3.46 3.41 2.18 3.08 3.49 3.80 3.78 3.79 3.80

5/27/2003 4.27 4.35 4.18 3.55 3.37 3.60 4.31 4.56 4.55 4.56 4.54

6/30/2003 3.37 3.12 3.09 2.45 1.65 2.82 3.11 3.39 3.39 3.41 3.39
Appendix 2 25

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 2008.—Continued

[—, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988]

Date 12MW-12D 12MW-12S 12MW-13S 12MW-14S 12MW-15S 12MW-16S 12MW-17S 12MW-18S 12MW-19D 12MW-19S 12MW-20D

8/4/2003 4.25 4.29 4.15 3.60 3.14 3.60 4.28 4.56 4.52 4.54 4.51

8/29/2003 2.88 2.60 2.58 2.88 1.05 2.47 2.59 2.84 2.87 2.84 2.85

9/30/2003 2.67 2.37 2.41 2.96 1.34 2.51 2.36 2.59 2.57 2.57 2.58

11/3/2003 2.71 2.46 2.49 1.63 1.86 2.30 2.45 2.69 2.70 2.70 2.71

12/8/2003 2.57 2.32 2.33 2.67 2.11 2.15 2.31 2.56 2.58 2.57 2.58

1/15/2004 2.60 2.36 2.36 2.61 2.12 2.21 2.36 2.60 2.62 2.61 2.60

2/13/2004 3.30 3.25 3.19 2.85 3.36 2.60 3.25 3.49 3.52 3.51 3.50

3/15/2004 3.17 2.99 3.07 2.86 2.11 2.55 2.99 3.23 3.73 3.26 3.24

4/21/2004 2.70 2.45 — 2.58 1.70 2.18 2.45 2.71 2.73 2.73 2.71

5/20/2004 2.39 2.06 2.08 2.39 1.03 2.01 2.06 2.32 2.33 2.34 2.35

6/21/2004 1.99 1.71 1.73 1.94 0.80 1.58 1.73 1.94 1.96 1.96 1.95

7/26/2004 2.62 2.39 2.42 2.59 2.14 3.31 2.41 2.63 2.64 2.64 2.65

9/15/2004 3.93 3.89 3.81 3.43 2.79 3.41 3.87 4.07 4.10 4.09 4.09

10/21/2004 2.80 2.67 2.67 2.88 2.12 2.66 2.64 2.84 2.87 2.87 2.87

11/29/2004 1.97 1.78 1.79 2.19 1.49 1.83 1.78 2.01 2.05 2.02 2.03

12/27/2004 2.04 1.91 1.90 2.17 2.46 1.78 1.86 2.16 2.19 2.16 2.17

1/25/2005 2.33 2.21 2.21 2.41 2.22 2.11 — 2.44 2.50 2.49 2.46

2/17/2005 2.55 2.47 2.48 2.57 2.4 2.33 2.47 2.67 2.71 2.7 2.69

3/24/2005 3.43 3.56 3.45 2.91 3.39 2.85 3.56 3.77 3.79 3.79 3.75

4/25/2005 2.64 2.47 2.46 2.69 1.64 2.40 2.47 2.67 2.74 2.73 2.70

5/31/2005 1.84 1.62 1.64 2.08 1.44 1.69 1.64 1.89 2.14 1.91 1.91

6/17/2005 1.89 1.66 1.71 2.32 1.08 2.00 1.64 1.86 1.92 1.90 1.90

7/21/2005 2.74 2.62 2.63 2.87 1.87 2.71 2.62 2.80 2.86 2.85 2.83

8/16/2005 3.87 3.93 3.87 3.45 2.93 3.47 3.93 4.08 4.13 4.11 4.09

9/29/2005 2.09 1.83 1.85 2.43 0.50 2.04 1.84 2.13 2.10 2.08 2.09

10/17/2005 3.06 2.91 2.92 3.11 2.10 2.89 2.91 3.10 3.16 3.14 3.12

12/1/2005 2.76 2.67 2.70 2.83 2.65 2.65 2.68 2.86 2.91 2.89 2.89

12/19/2005 3.67 3.84 3.70 3.05 3.55 3.61 3.81 4.06 4.10 4.10 4.06

1/26/2006 3.43 3.52 3.46 3.13 3.15 3.14 3.48 3.63 3.67 3.66 3.64

3/2/2006 3.89 3.98 3.88 3.34 3.18 3.37 3.97 4.18 4.22 4.23 4.18

3/30/2006 2.56 2.43 2.44 2.66 1.95 2.38 2.40 2.61 2.65 2.64 2.63

5/1/2006 1.81 1.54 1.60 2.14 1.07 1.79 1.54 1.78 1.84 1.80 1.82

5/31/2006 1.40 1.11 1.11 1.81 0.31 1.39 1.11 1.31 1.37 1.35 1.36

6/29/2006 2.04 1.85 1.91 2.27 1.05 2.08 1.88 2.09 2.14 2.1 2.12

10/2/2006 2.11 1.92 1.98 2.55 1.40 2.38 1.92 2.05 2.10 2.09 2.09

5/21/2007 0.60 0.21 0.22 1.11 -0.86 0.76 0.26 0.42 0.47 0.44 0.46

7/17/2007 0.77 0.47 0.51 1.39 -0.68 1.01 0.54 0.63 0.68 0.65 0.66

11/26/2007 1.64 1.43 1.45 2.08 1.17 1.88 1.46 1.59 1.63 1.59 1.63

5/5/2008 1.66 1.32 1.42 2.11 1.14 1.88 1.37 1.59 1.64 1.61 1.61

8/28/2008 1.55 1.28 1.37 2.10 0.67 1.79 1.40 1.49 1.55 1.52 1.54
26 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

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 2008.—Continued

[—, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988]

Date 12MW-20S 12MW-21D 12MW-21S 12MW-22D 12MW-22S 12MW-23D 12MW-23S 12MW-24D 12MW-24S 12MW-25D 12MW-25S

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 — — — — — — — — — — — 

12/13/2002 — — — — — — — — — — — 

2/4/2003 — — — — — — — — — — — 

2/13/2003 3.85 3.89 3.86 3.84 3.83 3.91 3.81 3.84 3.85 3.83 3.85

2/20/2003 — — — — — — — — — — — 

2/26/2003 4.01 4.02 4.03 4.03 3.99 3.94 3.98 3.86 4.02 3.96 3.96

3/25/2003 4.90 4.92 4.97 4.93 4.91 4.90 4.95 4.88 4.92 4.87 4.91

4/23/2003 3.77 3.79 3.81 3.79 3.74 3.80 3.79 3.79 3.77 3.78 3.76

5/27/2003 4.53 4.50 4.56 4.51 4.49 4.48 4.52 4.45 4.49 4.45 4.49

6/30/2003 3.38 3.39 3.43 3.38 3.34 3.40 3.40 3.39 3.36 3.39 3.34
Appendix 2 27

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 2008.—Continued

[—, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988]

Date 12MW-20S 12MW-21D 12MW-21S 12MW-22D 12MW-22S 12MW-23D 12MW-23S 12MW-24D 12MW-24S 12MW-25D 12MW-25S

8/4/2003 4.53 4.46 4.48 4.45 4.46 4.42 4.49 4.40 4.42 4.41 4.45

8/29/2003 2.82 2.82 2.88 2.85 2.79 2.88 2.87 2.88 2.81 2.89 2.81

9/30/2003 2.54 2.59 2.61 2.58 2.53 2.64 2.59 2.62 2.56 2.64 2.57

11/3/2003 2.67 2.70 2.72 2.71 2.65 2.73 2.71 2.73 2.69 2.72 2.67

12/8/2003 2.56 2.58 2.56 2.56 2.51 2.59 2.58 2.58 2.54 2.57 2.53

1/15/2004 2.58 2.60 2.60 2.59 2.53 2.62 2.62 2.61 2.36 2.62 2.56

2/13/2004 3.50 3.48 3.44 3.48 3.44 3.48 3.51 3.46 3.47 3.46 3.46

3/15/2004 3.23 3.24 3.27 3.21 3.19 3.24 3.26 3.23 3.11 3.24 3.22

4/21/2004 2.69 2.72 2.75 2.70 2.66 2.73 2.72 2.72 2.67 2.73 2.69

5/20/2004 2.32 2.34 2.38 2.33 2.28 2.36 2.35 2.35 2.30 2.35 2.29

6/21/2004 1.93 1.95 1.96 1.94 1.90 1.98 1.96 1.99 1.93 1.98 1.95

7/26/2004 2.63 2.62 2.63 2.61 2.58 2.64 2.64 2.62 2.60 2.64 2.60

9/15/2004 4.03 4.10 3.98 4.05 4.04 4.07 4.08 4.03 4.03 4.02 4.03

10/21/2004 2.84 2.88 2.89 2.88 2.82 2.85 2.96 2.91 2.85 2.89 2.85

11/29/2004 2.00 2.05 2.06 2.05 1.97 2.08 2.06 2.09 2.00 2.06 2.02

12/27/2004 2.13 2.18 1.93 2.16 2.09 2.21 2.18 2.18 2.13 2.18 2.14

1/25/2005 2.43 2.49 2.34 2.48 2.44 2.46 2.56 2.50 2.44 2.50 2.47

2/17/2005 2.66 2.72 2.74 2.7 2.65 2.72 2.72 2.72 2.65 2.7 2.69

3/24/2005 3.74 3.86 3.60 3.72 3.70 3.71 3.75 3.70 3.71 3.62 3.71

4/25/2005 2.68 2.74 2.78 2.73 2.65 2.75 2.75 2.74 2.69 2.75 2.70

5/31/2005 1.87 1.95 1.89 1.91 1.82 1.97 1.94 1.93 1.87 1.94 1.87

6/17/2005 1.86 1.95 1.97 1.93 1.85 1.98 1.96 1.99 1.88 1.97 1.89

7/21/2005 2.79 2.86 2.93 3.04 2.60 2.88 2.87 2.88 2.79 2.85 2.81

8/16/2005 4.08 4.08 4.13 4.09 4.06 4.09 4.13 4.09 4.09 4.05 4.08

9/29/2005 2.05 2.20 2.12 2.10 2.02 2.16 2.11 2.14 2.05 2.14 2.06

10/17/2005 3.08 3.20 3.17 3.14 3.07 3.16 3.16 3.17 3.10 3.16 3.10

12/1/2005 2.85 2.92 2.91 2.91 2.84 2.92 2.93 2.93 2.87 2.89 2.90

12/19/2005 4.04 4.07 4.09 4.04 4.01 4.01 4.08 3.99 4.03 3.96 4.01

1/26/2006 3.62 3.65 3.69 3.65 3.62 3.64 3.66 3.63 3.63 3.61 3.63

3/2/2006 4.16 4.18 4.25 4.17 4.15 4.14 4.20 4.13 4.17 4.12 4.16

3/30/2006 2.59 2.67 2.68 2.65 2.59 2.67 2.67 2.67 2.62 2.66 2.61

5/1/2006 1.77 1.80 1.80 1.82 1.75 1.88 1.78 1.87 1.79 1.86 1.81

5/31/2006 1.30 1.38 1.39 1.38 1.31 1.44 1.40 1.42 1.34 1.44 1.35

6/29/2006 2.08 2.15 2.13 2.14 2.06 2.17 2.16 2.16 2.11 2.15 2.1

10/2/2006 2.05 2.13 2.12 2.12 2.06 2.16 2.14 2.75 2.10 2.17 2.09

5/21/2007 0.41 0.50 0.49 0.48 0.40 0.55 0.49 0.57 0.43 0.55 0.45

7/17/2007 0.62 0.72 0.70 0.69 0.62 0.75 0.70 0.76 0.66 0.76 0.66

11/26/2007 1.58 1.65 1.63 1.63 1.58 1.69 1.65 1.69 1.63 1.67 1.61

5/5/2008 1.55 1.65 1.66 1.65 1.56 1.70 1.67 1.71 1.62 1.70 1.62

8/28/2008 1.48 1.56 1.56 1.57 1.49 1.61 1.58 1.61 1.54 1.58 1.52
28 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

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 2008.—Continued

[—, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988]

Date 12MW-26S 12MW-27D 12MW-27S 12MW-28D 12MW-28S 12MW-29S 12MW-30S 12PZ-01 12PZ-03D 12PZ-03S 12PZ-04

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 — — — 

12/13/2002 — — — — — — — 4.52 — — — 

2/4/2003 — — — — — — — 3.86 — — — 

2/13/2003 3.80 3.87 3.89 3.87 3.88 — — 3.85 — — — 

2/20/2003 — — — — — — — 3.96 — — — 

2/26/2003 3.83 4.01 4.04 4.03 3.98 — — 4 — — — 

3/25/2003 4.88 4.95 4.95 4.94 4.98 — — 4.87 — — — 

4/23/2003 3.78 3.79 3.78 4.10 3.80 — — 3.73 — — — 

5/27/2003 4.50 4.55 4.54 4.52 4.54 — — 4.49 — — — 

6/30/2003 3.37 3.40 3.39 3.40 3.43 — — 3.34 — — — 
Appendix 2 29

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 2008.—Continued

[—, Not measured; all measurements are in feet relative to the North American Vertical Datum of 1988]

Date 12MW-26S 12MW-27D 12MW-27S 12MW-28D 12MW-28S 12MW-29S 12MW-30S 12PZ-01 12PZ-03D 12PZ-03S 12PZ-04

8/4/2003 4.47 4.51 4.54 4.47 4.50 — — 4.47 — — — 

8/29/2003 2.85 2.85 2.85 2.87 2.88 — — 2.79 — — — 

9/30/2003 2.59 2.58 2.57 2.61 2.61 — — 2.54 — — — 

11/3/2003 2.69 2.73 2.70 2.72 2.73 — — 2.63 — — — 

12/8/2003 2.56 2.59 2.57 2.59 2.58 — — — — — — 

1/15/2004 2.61 2.63 2.60 2.61 2.62 — — — — — — 

2/13/2004 3.50 3.54 3.50 3.51 3.50 — — — — — — 

3/15/2004 3.22 3.26 3.25 3.25 3.28 — — — 2.92 -4.18 2.97

4/21/2004 2.71 2.73 2.72 2.73 2.74 — — 2.61 2.47 2.71 2.40

5/20/2004 2.28 2.36 2.34 2.35 2.37 — — 2.22 2.08 1.99 2.00

6/21/2004 1.94 1.95 1.95 1.96 1.97 — — 1.85 1.72 1.71 1.67

7/26/2004 2.63 2.65 2.64 2.64 2.63 — — 2.55 2.47 2.92 2.40

9/15/2004 4.07 4.08 4.09 4.08 4.10 3.95 3.95 3.95 3.68 1.13 3.50

10/21/2004 2.88 2.89 2.87 2.89 2.89 2.73 2.72 2.72 2.68 2.36 2.62

11/29/2004 2.03 2.04 2.03 2.07 2.05 1.85 1.84 1.88 1.80 2.25 1.61

12/27/2004 2.16 2.20 2.17 2.20 2.17 1.98 1.97 2.01 1.88 2.16 1.77

1/25/2005 2.50 2.50 2.49 2.50 2.51 2.30 2.28 2.28 2.24 2.53 2.07

2/17/2005 2.72 2.72 2.69 2.74 2.73 2.54 2.53 2.52 2.48 2.64 2.42

3/24/2005 3.75 3.79 3.77 3.75 3.75 3.63 3.62 3.62 3.20 2.77 3.07

4/25/2005 2.74 2.73 2.72 2.74 2.76 2.55 2.53 2.55 2.47 2.78 2.41

5/31/2005 1.93 1.95 1.92 1.94 1.93 1.73 1.70 1.72 1.65 2.90 1.61

6/17/2005 1.95 1.91 1.90 1.95 1.96 1.73 1.70 1.67 1.81 2.50 1.77

7/21/2005 2.86 2.85 2.84 2.87 2.87 2.69 2.66 2.66 2.69 2.67 2.65

8/16/2005 4.12 4.12 4.11 4.10 4.13 4.00 3.99 3.97 2.11 4.44 4.11

9/29/2005 2.07 2.10 2.08 2.12 2.12 1.93 1.93 1.92 1.83 2.60 1.70

10/17/2005 3.13 3.15 3.13 3.15 3.17 2.96 3.00 2.97 2.92 2.63 2.88

12/1/2005 2.91 2.92 2.87 2.92 2.93 2.73 2.72 2.73 2.69 2.74 2.57

12/19/2005 4.04 4.11 4.10 4.06 4.10 3.88 3.86 3.90 3.41 2.81 3.21

1/26/2006 3.63 3.66 3.66 3.65 3.68 3.55 3.55 3.52 3.32 2.91 3.21

3/2/2006 4.15 4.21 4.21 4.16 4.22 4.04 4.03 4.05 3.67 2.98 — 

3/30/2006 2.63 2.65 2.64 2.66 2.68 2.48 2.46 2.49 2.44 2.92 2.44

5/1/2006 1.82 1.82 1.81 1.86 1.82 1.66 1.66 1.64 1.64 2.64 1.59

5/31/2006 1.37 1.38 1.37 1.39 1.40 1.19 1.19 1.19 1.16 2.26 — 

6/29/2006 2.15 2.15 2.13 2.16 2.15 1.96 1.95 1.92 1.98 2.93 — 

10/2/2006 2.14 2.09 2.08 2.12 2.13 1.98 1.97 1.93 2.05 2.61 — 

5/21/2007 0.47 0.46 0.45 0.50 0.50 0.36 0.31 — 0.25 1.33 — 

7/17/2007 0.68 0.66 0.67 0.71 0.70 0.60 0.57 — 0.55 0.65 — 

11/26/2007 1.50 1.62 — 1.63 1.62 1.51 1.50 1.50 1.56 2.46 —

5/5/2008 1.65 1.64 1.61 1.67 1.65 1.45 1.44 — — — — 

8/28/2008 1.56 1.56 1.53 1.57 1.57 1.43 1.42 1.33 — — —
30 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE 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 <0.1512MW-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 <0.1712MW-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 <0.1912MW-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 <0.1712MW-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 <0.1712MW-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 <0.1712MW-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 <0.1812MW-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 <0.212MW-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 <0.1812MW-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 <0.112MW-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 <0.1112MW-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 <0.1112MW-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 <0.1512MW-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 <0.212MW-02S 8/30/2000 <5 12 <5 200 — — <5 <5 <5 <10 <10 67 <5 1.9 <5 <5 <5 <212MW-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 <0.1512MW-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 <1.712MW-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 <1.912MW-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 <0.3512MW-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 <0.3512MW-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 <0.8712MW-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 <0.8812MW-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 <0.9912MW-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 <0.8812MW-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 <1.312MW-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 <1.112MW-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 2.8J12MW-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 <1.312MW-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 3.4J12MW-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
Appendix 3 31

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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

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 <0.1512MW-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 <0.1512MW-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 0.37J12MW-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 1.812MW-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 <0.212MW-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 <0.1712MW-02S 5/21/2007 0.648J 4.55 31.3 <0.25 — — <0.3 <0.25 2.64 <2 <2 7.45J <2 1.24 0.316J <0.25 6.17 <0.512MW-02S 11/28/2007 7.98 15.7 90.8 <0.25 — — <0.3 <0.25 11.7 <2 <2 43.3 <2 1.41 7.2 <0.25 43.2 1.1112MW-03D 8/30/2000 <5 <5 <5 <5 — — <5 <5 18 <10 <10 24 <5 1.6 <5 <5 6 <212MW-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 <0.3112MW-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 <0.1712MW-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 0.8812MW-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 0.7312MW-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 1.312MW-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 0.2J12MW-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 <0.1812MW-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 0.3J12MW-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 0.7312MW-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 0.6512MW-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 0.8212MW-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 1.812MW-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 0.27J12MW-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 0.19J12MW-03D 5/21/2007 <0.3 <0.3 1.12 <0.25 — — <0.3 <0.25 10.1 <2 <2 32.1 <2 1.23 <0.25 <0.25 1.54 <0.512MW-03D 5/6/2008 <0.3 2.74 <0.25 2.17 — — <0.3 <0.25 2.74 <2 <2 <6 <2 1.73 <0.25 <0.25 0.492J <0.512MW-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 1,60012MW-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 85012MW-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 160J12MW-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 230J12MW-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 210J12MW-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
32 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 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 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 13J12MW-03S 5/21/2007 9.04 201H 407H 2.06 220 — <0.3 <0.25 1,410H <2 <2 11.0J <2 1.88 500H <0.25 1,220H 28.6
Appendix 3 33

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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

12MW-03S 7/16/2007 1.88 59.7 84 0.727J <20 — <0.3 <0.25 291 <2 <2 <6 <2 2.28 111 <0.25 232 3.6112MW-03S 11/27/2007 3.74J 68.5 140 <1.25 — — <1.5 <1.25 393 <2 <2 41.0B <10 1.89 166 <1.25 391 15.112MW-03S 5/6/2008 2.76J 77.5 <1.25 137 — — <1.5 <1.25 491 <2 <2 <6 <10 2.35 178 <1.25 484 2112MW-04D 8/28/2000 <5 <5 <5 <5 — — <5 <5 <5 <2 <2 64 <5 2.7 <5 <5 <5 <212MW-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 <0.1512MW-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 <0.1712MW-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 <0.1912MW-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 <0.1912MW-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 <0.1812MW-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 <0.1712MW-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 <0.1812MW-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 <0.212MW-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 <0.1812MW-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 <0.1112MW-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 <0.112MW-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 <0.1512MW-04S 8/28/2000 <5 <5 <5 <5 — — <5 <5 <5 <2 <2 38 <5 6.4 <5 <5 <5 <212MW-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 <0.1512MW-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 <0.1712MW-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 <0.1912MW-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 <0.1912MW-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 <0.1812MW-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 <0.1712MW-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 <0.1812MW-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 <0.212MW-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 <0.1812MW-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 <0.1112MW-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 <0.112MW-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 <0.112MW-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 <0.1112MW-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 <0.1112MW-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
34 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 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 <0.3 <0.25 — — <0.3 <0.25 <0.3 <2 <2 <6 <2 5.74 <0.25 <0.25 <0.25 <0.5 12MW-04S 11/28/2007 <0.3 <0.3 <0.3 <0.25 — — <0.3 <0.25 <0.3 <2 <2 50.3 <2 7.48 <0.25 <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 <0.112MW-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
Appendix 3 35

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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

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 <0.1112MW-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 <0.1712MW-05S 8/30/2000 640 66 13 10,000 — — <5 <5 1,500 <10 <10 170 <5 2.4 580 <5 27,000 3312MW-05SR 8/30/2000 730 71 15 12,000 — — <5 <5 1,600 <10 <10 170 <5 2.4 670 <5 31,000 3612MW-05S 11/30/2000 440 <35 <42 8,500 — — <37 <35 890 <0.5 8.8 170 <36 2.5J 400 <36 22,000 <3112MW-05SR 11/30/2000 450J <140 <170 8,400 — — <150 <140 710 <0.5 <0.5 150 <140 4.5J 260J <140 21,000 <12012MW-05S 2/28/2001 360J <230 <200 7,100 — — <160 <230 580J <0.5 6 130 <260 1.6J 270J <130 12,000 <17012MW-05SR 2/28/2001 360J <230 <200 7,200 — — <160 <230 580J 8.6 6.6 140 <260 2.3J 280J <130 12,000 <17012MW-05S 5/16/2001 590J <290 <350 8,900 — — <350 <270 690J <0.5 <0.5 130 <330 3.7 500J <430 16,000 <19012MW-05SR 5/16/2001 510J <290 <350 9,200 — — <350 <270 690J <0.5 4.6 99 <330 3.2 440J <430 17,000 <19012MW-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 <19012MW-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 <19012MW-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 <35012MW-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 <35012MW-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 <35012MW-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 <35012MW-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 <35012MW-05S 9/10/2002 490 74J <15 12,000 <880 — <12 <15 1,500 <10 <10 56 <24 4.9 540 <17 20,000 52J12MW-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 <35012MW-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 <3512MW-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 <35012MW-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 <2112MW-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 <21012MW-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 <21012MW-05SR 7/17/2003 <330 <210 <280 9,900 <6,300 — <230 <320 1,200J <10 <10 130 <230 — 720J <290 19,000 <21012MW-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 <35012MW-05SR 9/16/2003 <460 <430 <400 9,300 <6,800 — <450 <420 1,300J <5 <5 100 <470 — 700J <470 18,000 <35012MW-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 <2112MW-05SR 1/14/2004 <530 <600 <680 9,000 <13,000 — <580 <590 1,200J <10 <10 78 <850 — 650J <670 18,000 <21012MW-05S 4/27/2004 <330 <370 <420 9,000 <8,000 <0.07 <360 <370 1,300J — — — <530 <5 770J <420 18,000 <13012MW-05SR 4/27/2004 <530 <600 <680 7,500 <13,000 — <580 <590 1,300J <5 <5 170 <850 — 810J <670 20,000 <21012MW-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
36 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 12MW-05SR 8/18/2004 <380 <390 <430 8,800 <6,300 — <360 <440 1,500 <20 <20 140 <350 — 1000J <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 59.7 990 1.68 <20 — <0.3 <0.25 914 <2 2.71J 2,070 <2 2.01 296 0.791J 3,400 47.7 12MW-05SR 5/22/2007 23.3 60.9 1,050 1.6 — — <0.3 0.276J 971 <2 5.38J 2,520 <2 — 325 0.679J 3,510 49.4 12MW-05S 7/17/2007 27.2J 63.2 874 <12.5 <1,000 — <15 <12.5 948 <2 <2 3,100 <100 2.65 355 <12.5 3,190 44.4J 12MW-05SR 7/17/2007 20.8J 60.3 869 <12.5 — — <15 <12.5 927 <2 <2 3,390 <100 — 358 <12.5 3,190 45.2J 12MW-05S 11/27/2007 9.52J 33.8 858 <6.25 — — <7.5 <6.25 685 <100 <100 3,480B <50 2.63 208 <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 2.64 91.3 <5 1210 16.7J 12MW-05SR 5/6/2008 6.39J 56.7 <5 572 — — <6 <5 605 <2 <2 7,730 <40 2.83 85.4 <5 1190 15.7J 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 <0.3 <0.25 — — <0.3 <0.25 <0.3 — — — <2 — <0.25 <0.25 <0.25 <0.5 12MW-06D 11/28/2007 <0.3 <0.3 <0.3 <0.25 — — <0.3 <0.25 <0.3 <2 <2 21.9J <2 — <0.25 <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

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
Appendix 3 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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

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 <0.1912MW-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 <0.1712MW-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 <0.1712MW-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 <0.1812MW-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 <0.212MW-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 <0.212MW-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 <0.1112MW-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 <0.1512MW-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 <0.1512MW-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 <0.1712MW-06S 5/21/2007 <0.300H <0.300H <0.300H <0.250H — — <0.300H <0.250H <0.300H — — — <2.00H — <0.250H <0.250H <0.250H <0.500H12MW-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 <0.512MW-07D 8/28/2000 <5 <5 <5 <5 — — <5 <5 <5 <2 <2 19 <5 2.1 <5 <5 <5 <212MW-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 <0.1512MW-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 <0.1712MW-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 <0.1712MW-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 <0.1912MW-07S 8/28/2000 <5 <5 <5 <5 — — <5 <5 <5 <2 <2 120 <5 3.1 <5 <5 <5 <212MW-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 <0.1512MW-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 <0.1712MW-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 <0.1712MW-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 <0.1912MW-07S 5/22/2007 <0.3 <0.3 <0.3 <0.25 — — <0.3 <0.25 <0.3 — — — <2 — <0.25 <0.25 <0.25 <0.512MW-07S 11/28/2007 <0.3 <0.3 <0.3 <0.25 — — <0.3 <0.25 <0.3 <2 <2 45 <2 1.05 <0.25 <0.25 <0.25 <0.512MW-08D 8/29/2000 <5 <5 <5 <5 — — <5 <5 <5 <2 <2 7.6 <5 5.3 <5 <5 <5 <212MW-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 <0.1512MW-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 <0.1712MW-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 <0.1912MW-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 <0.1912MW-08S 8/28/2000 <5 <5 <5 <5 — — <5 <5 <5 <2 <2 150 <5 1.3 <5 <5 <5 <212MW-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 <0.1512MW-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
38 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 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 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 <0.2112MW-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
Appendix 3 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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

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 0.65J12MW-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 0.63J12MW-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 0.57J12MW-09S 5/22/2007 <0.3 9.03 14.1 <0.25 — — <0.3 <0.25 0.328J <2 <2 56.8 <2 1.36 <0.25 <0.25 <0.25 <0.512MW-09S 11/28/2007 <0.3 5.84 8.15 <0.25 — — <0.3 <0.25 0.401J <2 <2 71.2 <2 1.68 <0.25 <0.25 <0.25 <0.512MW-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 660J12MW-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 480J12MW-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 1,60012MW-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 1,70012MW-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 1,80012MW-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 1,70012MW-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 2,20012MW-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 2,30012MW-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 1,40012MW-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 1,40012MW-10S 6/11/2002 6,800 2,800 <140 4,900 <4300 6 <190 <200 6,800 6.3J 140 470 <190 12 2,400 <150 1,200 1,60012MW-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 1,40012MW-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 76012MW-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 47012MW-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 61012MW-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 48012MW-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 46012MW-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 44012MW-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 63012MW-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 42212MW-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 33012MW-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 41012MW-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 410J12MW-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 220J12MW-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 37012MW-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 170J12MW-10S 5/22/2007 10,500 12,100 33,400 142J <10,000 — <150 <125 4,490 74.2 110 654 <1,000 20.7 8,530 <125 2,190 476J
40 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 12MW-10S 7/16/2007 265 671 1,230 7.66 <20 — <0.3 0.375J 480 3.27J 6.77J 84.8 <2 10.1 435 <0.25 174 45.1 12MW-10S 11/27/2007 1,600 2,260 4,320 39.9 — — <6 <5 1,040 <20 649B <40 10.5 1,820 <5 447 217 12MW-10S 5/6/2008 766 776 8.31J 1,190 — — <6 <5 433 10.1J 40 895 <40 7.67 379 <5 132 121 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 55.5 <0.25 — — <0.3 <0.25 1.16 <2 <2 37.6 <2 — <0.25 <0.25 7.85 <0.5 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 <0.3 <0.25 — — <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 <712MW-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
Appendix 3 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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

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 <4412MW-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 <1.812MW-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 <1.812MW-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 <4.112MW-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 <2.712MW-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 <2.712MW-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 <0.2112MW-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 <0.7712MW-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 0.24J12MW-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 <0.5812MW-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 1.2J12MW-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 <2.512MW-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 <212MW-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 <7.812MW-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 <6.612MW-12S 5/22/2007 2.82 2.89 495 0.492J — — <0.3 <0.25 86 <2 <2 45.7 <2 1.17 84 0.364J 1,280 5.3412MW-12S 7/16/2007 2.61 2.86 396 0.387J — — <0.3 <0.25 87.5 <2 <2 52.2 <2 1.46 95.8 0.477J 1,140 6.3712MW-12S 11/26/2007 <6 <6 417 <5 — — <6 <5 114 <2 <2 33.4B <40 1.42 103 <5 1,150 <1012MW-12S 5/6/2008 <6 <6 <5 518 — — <6 <5 160 <2 <2 54.1 <40 1.73 139 <5 1,480 <1012MW-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 <0.1812MW-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 <0.1712MW-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 <0.1712MW-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 <0.1812MW-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 <0.212MW-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 <0.1812MW-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 <0.4212MW-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 <0.112MW-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 <0.5312MW-13SR 7/15/2003 <1.3 <1.5 <1.7 76 <32 — <1.5 <1.5 <2 — — — <2.1 — <1.5 <1.7 31 <0.5312MW-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 <0.5312MW-13SR 9/15/2003 <1.3 <1.5 <1.7 82 <32 — <1.5 <1.5 <2 — — — <2.1 — <1.5 <1.7 25 <0.5312MW-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
42 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 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 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 44 <0.25 — — <0.3 <0.25 3.05 <2 <2 6.46J <2 0.730J <0.25 <0.25 16.4 <0.5 12MW-13SR 5/21/2007 <0.3 0.489J 45.4 <0.25 — — <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 28.4 <0.25 — — <0.3 <0.25 0.892J <2 <2 <6 <2 1.17 <0.25 <0.25 9.96 <0.5 12MW-13SR 7/16/2007 <0.3 0.440J 28.2 <0.25 — — <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 23.8 <0.25 — — <0.3 <0.25 1.01 — — — <2 2.42 <0.25 <0.25 10.7 <0.5 12MW-13S 11/27/2007 <0.3 <0.3 22.4 <0.25 — — <0.3 <0.25 <0.3 <2 <2 41.6B <2 1.24 <0.25 <0.25 5.17 <0.5 12MW-13SR 11/27/2007 <0.3 <0.3 21.2 <0.25 — — <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 1.09 <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-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 <4.112MW-17S 7/15/2003 <11 <12 <14 170 <260 — <12 <12 <16 <5 <5 73 <17 1.9 35J <13 420 <4.2
Appendix 3 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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

12MW-17S 9/15/2003 <11 <12 <14 160 <260 <0.07 <12 <12 <16 <5 <5 26 <17 <5 30J <13 370 <4.212MW-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 <4.212MW-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 1.312MW-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 <0.3112MW-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 <2.912MW-17S 5/24/2005 <11 <12 <14 190 <260 — <12 <12 27J <25 <25 90 <17 3.2 46 <13 460 <4.212MW-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 <7.912MW-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 <5.812MW-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 <212MW-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 <1.712MW-17S 5/22/2007 <0.3 0.718J 68.3 <0.25 — — <0.3 <0.25 9.07 <2 <2 39.9 <2 1.39 9.19 <0.25 136 <0.512MW-17S 11/26/2007 <0.6 1.67J 125 <0.5 — — <0.6 <0.5 11.1 <2 <2 25.6B <4 1.55 9.45 <0.5 194 <112MW-17S 5/6/2008 <0.3 2.82 0.380J 107 — — <0.3 <0.25 17 <2 <2 36.9 <2 1.77 13.1 <0.25 212 0.668J12MW-18S 4/9/2003 <13 86 <17 550 <320 — <15 <15 <20 <0.5 <0.5 130 <21 9.4 <15 <17 <12 <5.312MW-18S 7/16/2003 <13 64 <17 500 <320 — <15 <15 <20 <25 <25 62 <21 3.9 <15 <17 <12 <5.312MW-18S 9/17/2003 <13 54 <17 490 <320 — <15 <15 <20 <5 <5 600 <21 4.1 <15 <17 <12 <5.312MW-18S 1/14/2004 <11 87 <14 440 <260 — <12 <12 <16 <10 <10 150 <17 3.9 <12 <13 <9.9 <4.212MW-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 <2.712MW-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 <3.912MW-18S 2/3/2005 <7.3 47 <4.6 380 <87 — <5.5 <5 9.1J — — — 7.4J — <5.2 <4.8 16J <3.612MW-18S 5/23/2005 <11 71 <14 450 <260 — <12 <12 <16 — — — <17 — <12 <13 25J 4.7J12MW-18S 9/12/2005 <8.3 76 <6.5 390 <280 — <8.1 <9.2 9.8J — — — <9.9 — <6.4 <8.2 18J <7.912MW-18S 1/31/2006 <12 89 <7.3 300 <140 — <8.7 <7.9 <9.4 — — — <8 — <8.4 <7.6 19J <5.812MW-18S 6/20/2006 <4.7 84 <5.3 230 <160 — <5.2 <5.1 <8.5 — — — <7.6 — <4 <4.3 15J 4.4J12MW-18S 9/11/2006 <3.7 72 <3.9 250 <150 — <3.9 <4.1 6.2J — — — <7.2 — <3.2 <3.8 15J 4.5J12MW-18S 5/22/2007 <0.3 63.2 235 0.559J — — <0.3 <0.25 8.59 — — — <2 — <0.25 <0.25 12.4 2.0712MW-18S 7/16/2007 <0.3 59.8 153 0.517J — — <0.3 <0.25 7.83 — — — <2 — <0.25 <0.25 13.9 2.312MW-18S 11/26/2007 0.609J 44 161 <0.5 — — <0.6 <0.5 8.83 <40 — 2,620B <4 3.56 <0.5 <0.5 16 <112MW-18S 5/5/2008 <1.5 48.8 <1.25 305 — — <1.5 <1.25 15.6 <2 <2 3,430 <10 3.41 <1.25 <1.25 33.2 <2.512MW-19D 4/8/2003 <11 <12 <14 <16 <260 — <12 <12 <16 3.2 7.4 72 <17 980 <12 <13 <9.9 <4.212MW-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 <8.212MW-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
44 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 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-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

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 <0.1512MW-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
Appendix 3 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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

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 <0.1712MW-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 <0.1712MW-20S 5/23/2007 <0.3 0.498J 4.1 <0.25 — — 1.92 <0.25 <0.3 2.34J <2 14,100 <2 4.5 <0.25 <0.25 <0.25 <0.512MW-20S 11/28/2007 <0.3 0.317J 2.95 <0.25 — — 2.62 <0.25 <0.3 <40 <40 9,610 <2 4.05 <0.25 <0.25 <0.25 <0.512MW-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 <0.4212MW-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 <0.5212MW-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 <0.5212MW-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 <0.5212MW-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 <0.5312MW-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 <0.1112MW-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 <0.5312MW-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 <2.112MW-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 <2.112MW-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 <0.5312MW-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 <0.7712MW-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 <1.512MW-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 <2.112MW-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 <1.512MW-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 <5.812MW-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 <5.812MW-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 <0.7912MW-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 <0.212MW-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 <1.712MW-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 0.5512MW-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
46 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 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 <0.3 <0.25 — — 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 <0.3 <0.25 — — 0.773J <0.25 <0.3 <100 <100 20,100 <2 — <0.25 0.300J <0.25 0.852J 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 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 11.9 293 1.01 — — 1.38 <0.25 147 <2 <2 16,300 <2 — 1.72 0.252J 54.1 211 12MW-22S 7/17/2007 <1.5 9.63 265 <1.25 — — 1.85J <1.25 121 <2 <2 18,100 <10 — 1.65J <1.25 60 138 12MW-22S 11/27/2007 <0.6 5.4 158 <0.5 — — 1.17J <0.5 56.4 <200 <200 11,300B <4 5.34 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-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 0.49J12MW-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
Appendix 3 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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

12MW-23S 4/9/2003 <110 <120 <140 2,200 <2600 <1 <120 <120 370J 1.1 2 65 740 2.8 <120 <130 4,200 <4212MW-23S 7/16/2003 <110 <120 <140 2,100 <2600 <0.07 <120 <120 450J 1.2 2.7 99 <170 <5 <120 <130 4,100 <4212MW-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 <2112MW-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 <0.8512MW-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 <1.912MW-23S 8/17/2004 <15 16J <17 480 <250 0.072J <14 <18 160 <20 <20 170 38J 1.8 21J <17 760 <1212MW-23S 2/1/2005 97 99 <15 690 <280 — <17 <16 150 <5 <5 89 <16 — 38J <15 690 <1212MW-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 13J12MW-23S 9/12/2005 77 240 <16 950 <700 — <20 <23 200 <0.5 <0.5 6.9 <25 — 50J <21 660 <2012MW-23S 1/30/2006 260 520 <16 1,900 <700 — <20 <23 360 0.54J <0.5 570 30J — 180 <21 890 23J12MW-23S 6/21/2006 230 700 <27 2,100 <820 — <26 <25 490 0.57J <0.5 720 <38 — 190 <21 830 34J12MW-23S 9/12/2006 99J 500 <39 1,800 <1,500 — <39 <41 400 <0.4 <0.5 650 <72 — 100J <38 670 39J12MW-23S 5/21/2007 148H 956H 3,200H 13 — — <0.3 1.33 703H 2.49J <2 3,010 <2 — 222H 0.748J 972H 61.112MW-23S 7/16/2007 151 1,220 3,240 14.9 — — <0.3 1.47 737 2.91J 3.53J 4,190 <2 — 221 0.900J 1,050 75.112MW-23S 11/27/2007 112 1,010 3,180 <12.5 — — <15 <12.5 602 <100 <100 2,650B <100 2.09 263 <12.5 914 98.812MW-23S 5/6/2008 232 1,680 19.7J 4,080 — — <15 <12.5 1,030 4.71J 2.25J 5,500 <100 2.45 458 <12.5 1,160 10912MW-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 <0.5312MW-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 <0.5312MW-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 <0.2712MW-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 <0.112MW-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 <0.1112MW-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 <0.1112MW-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 <1.112MW-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 1.4J12MW-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 1.5J12MW-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 1.812MW-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 <0.7712MW-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 <0.5312MW-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 1.2J12MW-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
48 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 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 0.645J <0.25 — — 1.3 <0.25 10.2 <2 <2 17,900 <2 4.08 <0.25 3.04 0.926J 71.6 12MW-25S 7/16/2007 <0.3 <0.3 <0.3 <0.25 — — 1.2 <0.25 5.97 <2 <2 22,700 <2 4.43 <0.25 2.16 0.479J 68.4 12MW-25S 11/27/2007 <0.3 <0.3 <0.3 <0.25 — — 0.877J <0.25 3.3 <200 <200 11,500B <2 4.05 <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 3.96 <0.25 2.39 <0.25 54.4 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
Appendix 3 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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

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 <1.312MW-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 <2.112MW-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 9.812MW-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 73J12MW-26S 5/25/2005 2,500 2,200 <91 7,300 <1,700 — <110 <99 650 — — — <100 — 1,500 <95 1,700 130J12MW-26S 9/28/2005 1,600 2,000 <82 5,800 <3,500 — <100 <120 810 — — — <120 — 1,300 <100 1,200 140J12MW-26S 1/31/2006 2,100 3,800 75 8,400 2,000 — <17 <16 1,500 — — — 29J — 2,100 <15 2,000 28012MW-26S 7/5/2006 1,300 2,700 <97 5,900 <3,900 — <98 <100 1,300 — — — <180 — 1,600 <96 1,500 180J12MW-26S 9/12/2006 380 930 <42 1,900 <1,300 — <41 <40 510 — — <61 — 420 <34 520 13012MW-26S 5/21/2007 1,500H 4,420H 9,980H 66.8 3,330 — <0.3 3.86 2,940H 16.6J 25.5 1,950 <2 2.57 3,270H 1.49 3,440H 234H12MW-26S 7/16/2007 1,270 4,560 8,820 42.3 <20 — 0.367J 2.43 2,840 11.1J 17.5J 7,250 <2 3.81 2,700 1.14 4,410 28412MW-26S 8/22/2007 1,080 3,710 6,910 46.7J <2,000 — <30 <25 2,390 <100 <100 13,000 <200 3.84 3,230 <25 3,940 28112MW-26SR 8/22/2007 1,480 5,370 9,580 72.0J <2,000 — <30 <25 3,470 <100 <100 13,200 <200 4.24 4,290 <25 5,280 37912MW-26S 11/26/2007 761 2,720 5,890 <25 — — <30 <25 1,830 <200 <200 4,260B <200 3.72 2,250 <25 3,230 21612MW-26SR 11/26/2007 991 3,370 7,520 <25 — — <30 <25 2,240 <100 <100 4,890B <200 3.75 2,670 <25 3,920 27812MW-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 14112MW-26S 8/14/2008 803 3,030 52.8 7500 — — .314J 3.65 2,420 <200 <200 6,760 <2 2.95 2,890 9.89 4,490 177J12MW-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 <0.112MW-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 <0.1112MW-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 <0.1812MW-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 <0.1112MW-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 <0.1512MW-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 <0.1512MW-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 <0.1512MW-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 0.2J12MW-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 4.612MW-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 5.8J12MW-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 <4.412MW-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 4.512MW-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 3.112MW-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
50 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 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 31.6 395 0.684J — — <0.3 <0.25 22.3 <2 <2 2120 <2 2.91 0.282J <0.25 40.7 4 12MW-27S 7/17/2007 <3 32.8 512 <2.5 — — <3 <2.5 30.1 <2 <2 2,570 <20 3.7 <2.5 <2.5 71.3 6.12J 12MW-27S 11/27/2007 <3 10.1 447 <2.5 — — <3 <2.5 18.6 <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 37.7 <2 <2 1,930 <2 3.61 1.99 <0.25 165 5.76 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 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 <0.3 <0.25 — — <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 <0.3 <0.25 — — <0.3 <0.25 <0.3 — — — <2 — <0.25 0.309J <0.25 21.7 12MW-28D 11/28/2007 <0.3 0.932J <0.3 <0.25 — — <0.3 <0.25 <0.3 <40 <40 5910 <2 — <0.25 0.272J <0.25 24.8 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
Appendix 3 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 August 2008.—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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC

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 38012MW-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 360J12MW-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 <20012MW-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 420J12MW-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 440J12MW-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 410J12MW-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 34012MW-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 380J12MW-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 33012MW-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 400J12MW-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 430J12MW-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 420J12MW-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 370J12MW-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 380J12MW-28S 5/22/2007 2,620 6,720 18,800 69.8 35.1J — <0.3 7.31 2,690 34.2 4.23J 3,340 <2 1.86 2,890 0.765J 6,890 28112MW-28SR 5/22/2007 2,730 6,890 19,600 70.5 37.1J — <0.3 7.66 2,750 33.9 4.15J 3,520 <2 1.86 3,030 0.789J 7,080 29712MW-28S 7/17/2007 2,520 6,480 15,100 <62.5 — — <75 <62.5 2,820 22.5J 4.87J 3,530 <500 — 3,350 <62.5 7,570 193J12MW-28S 11/27/2007 1,530 4,100 11,200 <50 — — <60 <50 1,810 <40 <40 2,290B <400 2.6 1,920 <50 4,890 <10012MW-28S 5/6/2008 653 3,190 32.9J 5,980 — — <15 <12.5 1,710 12.3J <2 4,680 <100 2.57 <12.5 <12.5 5,000 77.612MW-28SR 5/6/2008 569 2,890 31.4 5,360 — — <0.3 4.41 1,520 12.1J <2 4,800 <2 2.52 1,110 0.825J 3,800 58.4J12MW-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 12J12MW-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 <5312MW-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 2.612MW-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 12J12MW-29S 5/24/2005 <150 <100 <91 2,200 <1700 — <110 <99 460 <2.5 <2.5 43 <100 1.8 600 <95 5,300 <7312MW-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 <7312MW-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 4412MW-29SR 9/13/2005 <100 <87 <82 1,600 <3500 — <100 <120 640 <0.5 <0.5 24 200J 1.8 660 <100 4,500 <9912MW-29S 1/31/2006 <150 <100 <91 1,200 <1,700 — <110 <99 660 <0.5 <0.5 33 <100 — 740 <95 3,700 <7312MW-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 <0.1512MW-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
52 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—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 ace- tate 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-Diox- ane Acetate Benzene CF cDCE Ethane Ethene Meth MC TOC PCE Toluene TCE VC 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 1220 <10 — — <12 <10 226 <2 <2 64.5 <80 1.13 111 <10 1,950 <20 12MW-29SR 5/22/2007 2.17 27.4 1,230 2.27 — — <0.3 0.565J 221 <2 <2 65.7 <2 1.18 97.1 0.544J 1,980 10.6 12MW-29S 7/17/2007 <7.5 32.1 1280 <6.25 — — <7.5 <6.25 233 <2 <2 77.2 <50 1.82 131 <6.25 2,200 <12.5 12MW-29S 11/27/2007 <7.5 21.5J 960 <6.25 — — <7.5 <6.25 121 <2 <2 34.6B <50 1.33 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 1.83 32.1 <2.5 898 <5 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 <0.3 <0.25 — — <0.3 <0.25 <0.3 — — — <2 — <0.25 <0.25 <0.25 <0.5 12PZ-03D 11/28/2007 <0.3 <0.3 <0.3 <0.25 — — <0.3 <0.25 <0.3 <2 <2 119 <2 — <0.25 <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
Appendix 4 53

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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (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 19.212MW-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 2.412MW-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 8.312MW-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 712MW-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
54 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU) 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-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 —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 0.048 21.2

—

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 — — —
Appendix 4 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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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 29.412MW-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 4.912MW-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 11.212MW-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 012MW-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 7.712MW-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 8.912MW-03S 1/31/2006 — — — — 21 — 0.35 — — 0.2 4.8 — — 149 18 — 19.5 5.112MW-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 —
56 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU) 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 — 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
Appendix 4 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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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-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 —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 —
58 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU) 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 3.912MW-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 2.712MW-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

—
Appendix 4 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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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 1.512MW-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 7.912MW-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 0.312MW-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 —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-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-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 —
60 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU) 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

—

— 1780

— 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-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 3.312MW-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 0.093 18.3

—

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 —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 —
Appendix 4 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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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 23.712MW-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 4.912MW-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 4212MW-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 42912MW-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 3.412MW-09S 1/31/2006 — — — — 24 — 1.4 — — 0.5 5.2 — — 169 30 — 16.5 19.8
62 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU) 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-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 —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 5312MW-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 12.412MW-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 12.412MW-10S 2/2/2005 <10 — 1.1 90 32 — 5.5 2.4 — 0.2 4.8 <0.53 19.0 147.1 11 0.70 15.4 9.112MW-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 2.912MW-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

—
Appendix 4 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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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 1000 — 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 — — 1,104 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 85.512MW-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-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 3.312MW-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 —
64 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (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 31.212MW-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 40.712MW-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 3.812MW-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-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 8.512MW-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 2.812MW-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 — — —
Appendix 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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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 2012MW-13S 1/30/2006 — — — — 270 — 5.5 — — 0.6 5.1 — — 1,010 13 — 17.0 1612MW-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-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 2.612MW-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 5.712MW-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 11.612MW-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 32.512MW-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
66 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU) 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-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 0.712MW-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 14.512MW-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 5.612MW-18S 5/23/2005 70 — — 270 38 — 2.0 — — 0.1 5.4 — — 328 12 0.10 21.6 2.712MW-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-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 30.212MW-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 3.612MW-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 —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 3.412MW-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 2.312MW-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 712MW-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
Appendix 4 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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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 1,045 <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 1.412MW-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 212MW-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 5.512MW-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-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 5.512MW-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 13.812MW-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 19.812MW-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 24.512MW-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 24.112MW-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 0.327 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 0.463 64.1 379 2.9 0.14 20.5 —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 18.812MW-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
68 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU) 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 — — — 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 11.812MW-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 12.912MW-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 27.712MW-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

—
Appendix 4 69

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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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 6.212MW-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 8.512MW-22S 2/3/2005 250 — 42 4 99 2.7 20 15 — <0.05 6.4 1.9 110 884 <1.3 0.20 17.0 1.512MW-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 40.812MW-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 3.412MW-22S 1/31/2006 — — — — 91 — — — — 0.05 6.0 — — 691 2.3J — 19.1 65.812MW-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-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 1.812MW-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 7.412MW-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 6.912MW-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 8.412MW-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 2.712MW-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 9.312MW-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 8.612MW-23S 2/1/2005 — — 16 — 55 — — 4.0 — — — 2.3 65.0 — 4.4 — — —
70 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (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-24D 4/7/2003 180 <0.80 120 100 86 — 40 21 1,400 0.120 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 18.312MW-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 18.112MW-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 5.212MW-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 2512MW-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 10.312MW-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 31.212MW-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 15.312MW-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
Appendix 4 71

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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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 14.512MW-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 15.312MW-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 5.512MW-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 112MW-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 19.712MW-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 28.912MW-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 5.312MW-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 18.412MW-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 12.212MW-25S 1/30/2006 — — — — 44 — 2.3 — — 0.2 6.6 — — 683 <0.75 — 18.8 7.712MW-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 —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-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 8.912MW-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 4.712MW-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 8.312MW-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 1212MW-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 —
72 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU) 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-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 412MW-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 2.712MW-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 17.912MW-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 0.212MW-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 6.712MW-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 812MW-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

—
Appendix 4 73

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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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 512MW-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 12.112MW-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 15.212MW-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 9.112MW-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-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 12.812MW-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 12.612MW-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 11.412MW-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 —
74 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC 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 August 2008.—Continued [mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU) 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 0.037 20.9

—

12MW-28SR 5/6/2008

—

— 10.5

— 94

—

— 4.0 35

—

— 1.4 58.7

— 5.1

—

—

—

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 38.412MW-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 34.912MW-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

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-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 27.612PZ-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
Appendix 4 75

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 August 2008.—Continued[mg/L, milligrams per liter; nM, nanomoles; μg/L, micrograms per liter; S.U., standard units; μS/cm, microsiemens per centimeter; 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) Mag- nesium (mg/L) Man- ganese (μg/L) Dissolved oxygen (mg/L) pH (S.U.) Potassium (mg/L) Sodium (mg/L) Specific conduc- tance (μS/cm) Sulfate (mg/L) Sulfide (mg/L) Tem- perature (Celsius) Turbidity (NTU)

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 — —
76 Contaminated Groundwater at Solid Waste Management Unit 12, Naval Weapons Station Charleston, North Charleston, SC

Prepared by:

USGS Publishing Network

Raleigh Publishing Service Center

3916 Sunset Ridge Road

Raleigh, NC 27607

For additional information regarding this publication, contact:

Don A. Vroblesky, Hydrologist

USGS South Carolina Water Science Center

Stephenson Center, Suite 129

720 Gracern Road

Columbia, SC 29210

email: vroblesk@usgs.gov

Or visit the USGS South Carolina Water Science Center Web site at:

http://sc.water.usgs.gov/

Vroblesky and Petkewich—Contaminated Groundwater at Solid Waste Management Unit 12, North Charleston, SC—Scientific Investigations Report 2009–5166