Cenco_2009 Annual GW Monitoring Report-OCR

ANNUAL GROUNDWATER MONITORING REPORT (2009)
HONBARRIER, INC. FACILITY
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
GROUNDWATER INCIDENT NO.: 8440
DELTA PROJECT NO.: 5E0811448P
This report was prepared for:
Honbarrier, Inc.
P.O. Box 7027
High Point, North Carolina 27263
This report was prepared by:
DELTA
Delta Consultants
8008 Corporate Center Drive, Suite 100
Charlotte, North Carolina 28226
[phone]
January 15, 201 O
TABLE OF CONTENTS
1 .0 INTRODUCTION ................................................................................... 1
2.0 ACTIVITIES PERFORMED DURING THIS PERIOD .............................. 1
3.0 SITE HISTORY ..................................................................................... 2
4.0 FIELD ACTIVITIES ............................................................................... 3
5.0 GROUNDWATER FLOW ...................................................................... 3
6.0 ANALYTICAL RESULTS ....................................................................... 4
7.0 SUMMARY AND CONCLUSIONS ......................................................... 5
FIGURES
Figure 1.1: Topographic Location Map
Figure 3.1: Site Map
Figure 5.1: Estimated Shallow Groundwater Flow Map
Figure 6.1: Total VOC Concentration Map
Table 4.1:
Table 4.2:
Table 6.1:
TABLES
Physical Characteristics of Existing Monitoring Wells
Summary of Groundwater Field Parameters
Summary of Chemical Constituents Detected in Groundwater
APPENDICES
Appendix A: Laboratory Analytical Report and Chain-of Custody Record
Appendix B: Historical Groundwater Sample Results
ANNUAL GROUNDWATER MONITORING REPORT (2009)
HONBARRIER, INC. FACILITY
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
GROUNDWATER INCIDENT NO.: 8440
DELTA PROJECT NO.: 5E0811448P
1.0 INTRODUCTION
Delta Consultants (Delta), on behalf of Honbarrier, Inc. (Honbarrier), has
prepared this Annual Groundwater Monitoring Report in accordance with the
North Carolina Department of Environment and Natural Resources
(NCDENR), Division of Water Quality, Groundwater Section correspondence
dated May 7, 2002, and titled, Modification of Sampling Plan (MSP). As per
the revised sampling plan, monitoring wells MW-2, MW-13, and MW-19 will be
sampled on an annual basis and the groundwater samples will be analyzed for
volatile organic compounds (VOCs) according to EPA Method 601. In addition,
monitoring well MW-7 will be sampled on an annual basis and the groundwater
sample will be analyzed for voes according to EPA Methods 601 and 602. This
annual report summarizes the monitoring event conducted in December 2009.
The location of the subject site is presented in Figure 1.1.
2.0 ACTIVITIES PERFORMED DURING THIS PERIOD
The following tasks were completed during the reporting period:
• Depth to groundwater was gauged at monitoring wells MW-2, MW-7, MW-
13, and MW-19 on December 22, 2009;
• Groundwater samples were collected from monitoring wells MW-2, MW-7,
MW-13, and MW-19 on December 22, 2009; and,
• Field measurements including dissolved oxygen (DO), pH, specific
conductivity, oxidation reduction potential (ORP), and temperature were
collected from monitoring wells MW-2, MW-7, MW-13, and MW-19 on
December 22, 2009.
Annual Groundwater Monitoring Report (2009)
Honbarrier, Inc.
Charlotte, North Carolina
Groundwater Incident No.: 8440
Delta Project No.: 5E0811448P
3.0 SITE HISTORY
2
Honbarrier provided bulk-hauling services to a variety of industries. The entire
site consists of 30 acres, approximately six acres of which were actively used for
terminal operations. The terminal operations began in 1969, under the name
Central Transport Incorporated. The site had been farmed prior to its purchase.
The facility consisted of a terminal office, maintenance garage, truck wash bays,
a boiler house for steam production, a wastewater pretreatment system, former
waste treatment lagoons, and parking facilities for empty tank trucks.
The site included a facility for cleaning the inside of empty tank trucks
following delivery of bulk chemicals. Rinse waters generated from these
washing operations were collected and treated prior to discharge to the
Charlotte Mecklenburg Utility District treatment plant in accordance with
permit number 0188. Historically, two on-site impoundments were used to
treat tank truck rinse waters. During the 1970s and 1980s, site operations
resulted in the release of contaminants into the soil and groundwater. Use of
the impoundments was terminated in 1985 when a new pretreatment system
commenced operation. Closure of the impoundments began in 1991. The
impoundments closed as a landfill in 1992 and are capped to meet Resource
Conservation and Recovery Act requirements. Figure 3.1 shows the location
of site surface features, the regulated unit (closed landfill), and seven site
monitoring wells installed during the contamination assessment process.
Monitoring wells MW-9, MW-10, MW-11, MW-12, MW-14, MW-15, and MW-17
were abandoned on May 15, 1999 (following approval by the NCDENR) and
are no longer represented on the site map. Terminal operations at the site
ceased in approximately 1995 and the property was vacated. The subject site
is currently leased and utilized as a truck storage terminal.
Annual Groundwater Monitoring Report (2009)
Honbarrier, Inc.
Charlotte, North Carolina
Groundwater Incident No.: 8440
Delta Project No.: 5E0811448P
4.0 FIELD ACTIVITIES
3
Delta mobilized to the site on December 22, 2009, to conduct the groundwater
sampling activities. The four monitoring wells sampled during the annual event
included MW-2, MW-7, MW-13, and MW-19 (Figure 3.1 ). Prior to purging the wells
of at least three volumes of water (or to dryness) using new disposable bailers,
Delta measured the depth to water in each well to be sampled using a
decontaminated electric water level indicator. A new pair of protective, non-reactive
gloves was donned at each well prior to collecting water level measurements. The
measured depths were subtracted from the casing elevations to determine the
groundwater elevation relative to Mean Sea Level. The physical characteristics of
the site monitoring wells and groundwater elevation data are summarized in Table
4.1. After purging the wells, water samples were collected from the same bailers
used to purge each well and decanted into laboratory-supplied containers. The
containers were placed into an ice-filled cooler and transported under chain-of-
custody to Pace Analytical Services, Inc. (PACE) of Huntersville, North
Carolina.
At the laboratory, the four groundwater samples were analyzed for EPA Method
601 VOCs according to Standard Method 6200. The groundwater sample
collected from monitoring well MW-7 was also analyzed for the EPA Method 602
VOCs. In addition, groundwater field measurements were collected for DO, pH,
electrical conductivity, ORP, and temperature (Table 4.2).
5.0 GROUNDWATER FLOW
Groundwater flow direction in the surficial aquifer was estimated based on water
level data obtained from the monitoring wells on December 22, 2009 (Figure 5.1).
Annual Groundwater Monitoring Report (2009)
Honbarricr, Inc.
Charlotte, North Carolina
Groundwater Incident No.: 8440
Delta Project No.: 5E0811448P
4
Interpretation of the relative water table elevations suggests that groundwater flows
generally to the southeast across the site. This flow direction is consistent with
previously interpreted flow directions. On average, static water levels measured in
the four monitoring wells have increased approximately 1.42 feet since December
2008.
6.0 ANALYTICAL RESULTS
The laboratory analytical results for the groundwater samples collected on
December 22, 2009 are contained in Appendix A and summarized in Table 6.1.
The groundwater sample collected from monitoring well MW-2 exhibited the
presence of vinyl chloride at a concentration of 1.3 micrograms per liter (µg/L),
which exceeded its established North Carolina Groundwater Quality Standard
(NCGQS) of 0.030 ~lg/L. Two additional VOCs were detected in the groundwater
sample collected from MW-2 in concentrations below their respective NCGQS.
As summarized, benzene, chlorobenzene, and vinyl chloride were detected in the
groundwater sample collected from MW-7 at concentrations of 20 µg/L, 190 µg/L,
and 1.2 µg/L, respectively, which exceeded their established NCGQS. Three
additional VOCs were detected in the groundwater sample collected from MW-7
in concentrations below their respective NCGQS.
Vinyl chloride (33 ~Lg/L) and cis-1,2-dichloroethene (376 µg/L) were detected in
the groundwater sample collected from monitoring well MW-13 in concentrations
which exceeded their respective NCGQS. Three additional VOCs were detected
in the groundwater sample collected from MW-13 in concentrations below their
respective NCGQS.
Annual Groundwater Monitoring Report (2009)
Honbarrier, Inc.
Charlotte, North Carolina
Groundwater Incident No.: 8440
Delta Project No.: 5E0811448P
5
Vinyl chloride (5.7 µg/L) was detected in the groundwater sample collected from
monitoring well MW-19 in a concentration which exceeded its established
NCGQS. Two additional VOCs were detected in the groundwater sample
collected from MW-19 in concentrations below their respective NCGQS.
A total VOC concentration map, showing total detectable VOCs, is provided as
Figure 6.1. Historical groundwater sample results are presented in Appendix B.
7.0 SUMMARY AND CONCLUSIONS
Based on the field and laboratory analytical results, Delta offers the following
summary and conclusions.
• Shallow groundwater flow is directed toward the southeast across the site.
• The groundwater sample collected from monitoring well MW-2 exhibited a
concentration of vinyl chloride, which exceeded its established NCGQS.
Concentrations of total VOCs detected in the groundwater sample
collected from MW-2 continue to decrease and are currently at a historical
low.
• The groundwater sample collected from monitoring well MW-7 exhibited
the presence of benzene, chlorobenzene, and vinyl chloride in
concentrations which exceeded their NCGQS. Concentrations of dissolved
petroleum-related voes have decreased significantly since the last
sampling event conducted in December 2008. Historically, concentrations
of total VOCs detected in the groundwater samples collected from MW-7
Annual Groundwater Monitoring Report (2009)
Honbarrier, Inc.
Charlotte, N011h Carolina
Groundwater Incident No.: 8440
Delta Project No.: 5E0811448P
6
exhibit non-static conditions; however, there appears to be a decreasing
trend becoming evident.
• Vinyl chloride and cis-1,2-dichloroethene were detected in the groundwater
sample collected from monitoring well MW-13 in concentrations which
exceeded their respective NCGQS. Concentrations of total VOCs detected
in the groundwater sample collected from MW-13 have increased since
December 2008.
• Vinyl chloride was detected in the groundwater sample collected from
monitoring well MW-19 in a concentration above its established NCGQS.
Low-level concentrations of total VOCs detected in the groundwater
samples collected from MW-19 exhibit non-static conditions.
Total dissolved VOCs detected in the groundwater samples collected from the four
monitoring wells in December 2009 have decreased since the sampling event
conducted in December 2008. Based on the information presented in this report
and past groundwater analytical data, Delta concludes that the chlorinated
VOC groundwater contaminant plume identified at the subject site exhibits
characteristics indicative of biodegradation and physical attenuation. No
parent compounds (trichloroethene, tetrachloroethene) were detected at
concentrations at or above the laboratory reporting limits in the groundwater
samples collected from the four monitoring wells sampled in December 2009.
The remaining chlorinated daughter compounds (cis-1,2-dichloroethene, vinyl
chloride) detected in the groundwater samples are likely the result of
degradation of the parent compound(s). The next groundwater sampling
event should be conducted in December 2010.
TABLES
TABLE 4.1
PHYSICAL CHARACTERISTICS OF EXISTING MONITORING WELLS
HONBARRIER, INC. FACILITY
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
DEL TA PROJECT NO.: 5E0811448P
WELL SCREEN GROUND TOC DEPTH TO GROUNDWATER
WELL ID DEPTH INTERVAL SURFACE ELEVATION GROUNDWATER ELEVATION ELEVATION (ft·BLS) (ft-BLS) lft-MSL\ (ft·MSL) (ft·TOC)* {ft-MSL)
MW-2 24 14-24 769.8 771.59 17.66 753.93
MW-7 39 29-39 768.7 768.71 16.28 752.43
MW-13 29 19-29 759.5 761.74 13.20 748.54
MW-16 76 66-76 759.7 761.81 NM NM
MW-18 130 110-130 768.95 768.81 NM NM
MW-19 14 4-14 746.92 746.87 2.33 744.54
NOTES:
ft-BLS Feet below land surface
ft-MSL Feet above mean sea level
TOC Top of casing
ft-TOC Feet below top of casing
* Measured on December 22, 2009
NM Not measured; well not included as part of this sampling event; deep well
TABLE 4.2
SUMMARY OF GROUNDWATER FIELD PARAMETERS
HONBARRIER, INC. FACILITY
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
DEL TA PROJECT NO.: 5E0811448P
WELL ID FIELD PARAMETERS
PH (SU) Temperature (C0) ORP (mV) DO (ma/Ll EC IS/cm)
MW-2 6.84 18.23 146 4.68 0.552
MW-7 7.02 18.58 -84 4.78 0.685
MW-13 7.17 17.65 84 6.31 0.537
MW-16 NM NM NA NM NM
MW-18 NM NM NA NM NM
MW-19 6.49 17.82 103 7.14 0.514
NOTES:
SU Standard Units co Degrees Celsius
ORP Oxidation Reduction Potential
mV Milli-Volts
DO Dissolved Oxygen
mg/L Milligrams per liter or parts per million
EC Electrical Conductivity
Siem Siemens per centimeter
NM Not measured; well not included as part of this sampling event
Measured on December 22, 2009
TABLE 6.1
SUMMARY OF CHEMICAL CONSTITUENTS DETECTED IN GROUNDWATER
HONBARRIER, INC. FACILITY
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
DELTA PROJECT NO.: 5E0811448P
CONSTITUENT MONITORING WELL IDENTIFICATION NCGQS MW-2 MW-7 MW-13 MW-19
Benzene NS 20 NS NS 1
Chlorobenzene ND 190 8.1 ND 50
1,2-Dichlorobenzene ND ND ND ND 20
1,3-Dichlorobenzene ND 1.1 ND ND 200
1,4-Dichlorobenzene ND 5.3 2 ND 6
1, 1-Dichloroethene ND ND ND ND 7
1, 1-Dichloroethane 2.5 ND ND 4 6
cis-1,2-Dichloroethene 14.6 1.9 376 23.9 70
trans-1,2-Dichloroethene ND ND 16.7 ND 100
Ethyl benzene NS ND NS NS 600
Toluene NS ND NS NS 600
Trichloroethene ND ND ND ND 3
Vinyl Chloride 1.3 1.2 33 5.7 0.030
Xylenes NS ND NS NS 500
Total voes 18.4 219.5 435.8 33.6 NA
NOTES:
All concentrations in micrograms per liter (µg/L) or parts per billion
NS Not sampled for this constituent
ND Not detected in a concentration at or above the laboratory Practical Quantitation Limits
NA Not applicable
NCGQS North Carolina Groundwater Quality Standard
BOLD Exceeds the NCGQS
Samples collected on December 22, 2009
FIGURES
APPENDICES
APPENDIX A
LABORATORY ANALYTICAL REPORT AND CHAIN-OF-
CUSTODY RECORD
Pace Analytical Services, Inc.
2225 Riverside Dr.
Asheville, NC 28804
[phone]
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
(704 )875-9092
January 14, 2010
John Reuscher
Delta Environmental Consultant
8008 Corp. Center Drive
Suite 100
Charlotte, NC 28226
RE : Project: HONBARRIER 2009 SAMPLING
Pace Project No.: 9260108
Dear John Reuscher:
Enclosed are the analytical results for sample(s) received by the laboratory on December 22, 2009.
The results relate only to the samples included in this report. Results reported herein conform to the
most current NELAC standards, where applicable, unless otherwise narrated in the body of the
report.
Inorganic Wet Chemistry and Metals analyses were performed at our Pace Asheville laboratory and
Organic testing was performed at our Pace Huntersville laboratory unless otherwise footnoted. All
Microbiological analyses were performed at the laboratory where the samples were received.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
~ ~--:£:CL-I
Kevin Godwin
[e-mail]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, Inc ..
Page 1of13
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CHAIN-OF-CUSTODY I Analytical Request Document
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APPENDIX B
HISTORICAL GROUNDWATER SAMPLE RES UL TS
TABLE S-1
SUMMARY OF voes DETECTED IN GROUNDWATER -MW-2
HONBARRIER, INC. FACILITY
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
DELTA ENVIRONMENTAL PROJECT#: 5E0811448P
CONSTITUENT 12/19/97 4/28/98 5/18/99 6/29/99 12/16/99 6/27/00 12/11/00 6/15/01 12/5/01 12/30/02 12/3/03 12/2/04 12/9/05 12112106 12/27107 1216108 12122109 DL
Benzene NS NS ND NS ND ND ND NS ND NAG NAG NAG NAG NAG NAG NAG NAG NA
Chlorobenzene NS NS 2 NS ND ND ND NS ND ND ND ND ND ND ND ND ND 1
2-Chlorotoluene NS NS ND NS 17.8 18 ND NS 7 NAG NAG NAG NAC NAG NAG NAG NAG NA
1,3-Dichlorobenzene NS NS ND NS ND ND ND NS ND ND ND ND ND ND ND ND ND 1
1,4-Dichlorobenzene NS NS ND NS ND ND ND NS ND ND ND ND ND ND ND ND ND 1
1, 1-Dich!oroethane NS NS 40 NS 35.6 28 22 NS 26 16.4 6.4 6.9 11.0 5.1 5.7 6.6 2.5 1
1, 1-Dich!oroethene NS NS ND NS ND ND ND NS ND ND ND ND ND ND ND ND ND 1
cis-1,2-Dich!oroethene NS NS 194 NS 169 110 85 NS 110 99.8 95 65 71 41 38 34 14.6 1
trans-1,2-Dich!oroethene NS NS ND NS 2.3 ND ND NS ND 1.2 ND ND 1.2 ND ND ND ND 1
1,2,4-Trich!orobenzene NS NS ND NS ND ND ND NS ND NAG NAC NAG NAG NAG NAG NAC NAG NA
Trichloroethene NS NS 3 NS 2.2 6.3 ND NS ND 4.4 4.4 1.2 1.6 ND ND ND ND 1
Vinyl Chloride NS NS 53 NS 43.1 28 12 NS 18 21.3 10 4.4 5.9 3.3 1.8 1.7 1.3 1
Xylenes NS NS ND NS ND ND ND NS ND NAG NAG NAG NAG NAG NAG NAG NAC NA
T etrachloroethene NS NS ND NS ND ND ND NS ND ND ND ND ND ND ND ND ND 1
Total VOCs NA NA 292 NA 270 190.3 119 NA 161.3 143.1 115.8 77.2 90.7 49.4 45.5 41.8 18.4 NA
NOTES:
All concentrations in micrograms per liter (.ug/L) or parts per billion
ND
DL
NA
NS
NAG
300
250
~ 200 -
~ "' 2:
c 0 ~ 150
~ -c "' " c
0
u 100
0
r5J' r5J' & <ii' 0 ~ ~ !::' '21 'O :::.;
TOTAL voe CONCENTRATIONS DETECTED
MONITORING WELL MW-2
& ~ " §> & <§ & rs: <g-rv (!? Pi' !? ~ :::.; ~ <V <V <V :::.; :::.; " " "
Sample Date
~ ~ <V ~ ~ ~ :::.; "
;§' <§ <V "
& rv ~ "
TABLE S-1
SUMMARY OF voes DETECTED IN GROUNDWATER -MW-7
HONBARRIER, INC. FACILITY
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
DEL TA ENVIRONMENTAL PROJECT#: 5E0811448P
CONSTITUENT 12119197 04128198 05118199 06129199 12116199 06127100 12111100 06115101 12/05/01 12130102 12/03/03 12/02/04 12/09/05 12112106 12127/07 12106108 12122/09 DL
Benzene 25 28 23 NS 34.4 48 87 NS ND 56 63 101 2.7 36 134.0 96.4 20.0 5
Chlorobenzene 110 180 190 NS 230 290 420 NS 300 246 510 204 6.2 200 518.0 214.0 190.0 25
2-Chloroto!uene ND ND ND NS ND ND ND NS ND NAC NAG NAG NAG NAG NAG NAG NAG NA
1,2-Dich!orobenzene ND ND ND NS ND ND ND NS ND 2.9 ND ND ND ND ND ND ND 5
1,3-Dichlorobenzene 5.1 ND 8 NS 6.6 8.9 19 NS 13 5.1 11 ND ND ND 11.0 ND 1.1 5
1,4-Dichlorobenzene 29 46 59 NS 55.8 53 110 NS 87 33.2 98 13.2 ND 6.1 33.5 10.4 5.3 5
1, 1-Dichloroethane ND ND 3 NS 7.7 ND 5.1 NS ND ND ND ND ND ND ND ND ND 5
1, 1-Dichloroethene ND ND ND NS 5.4 ND ND NS ND ND ND ND ND ND ND ND ND 5
cis-1,2-Dichloroethene 250 280 530 NS 406 140 220 NS 160 18.4 230 4.4 NS NS 49.9 ND 1.9 5
trans-1,2-Dichloroethene ND ND 6 NS 4.9 ND 5.1 NS ND 1 ND ND ND ND ND ND ND 5
1,2,4-Trichlorobenzene ND ND 20 NS 18.2 13 18 NS 7.5 NAG NAG NAG NAG NAG NAG NAG NAG NA
Trichloroethene ND ND ND NS 21 21 6.1 NS ND ND ND ND ND ND ND ND ND 5
Vinyl Chloride 160 100 90 NS 120 70 160 NS 110 55.8 73 2.5 ND ND 11.3 ND 1.2 5
Xy!enes ND ND 3 NS 4.3 ND ND NS ND ND ND 3.3 ND ND 91.3 40.7 ND 10
Ethylbenzene ND ND ND NS ND ND ND NS ND 27 ND 4.1 ND ND ND 53.8 ND 5
Toluene ND ND 2 NS ND ND ND NS ND ND ND ND ND ND ND 10.1 ND 5
Tetrachloroethene ND ND ND NS 21.3 21 ND NS 7.9 ND ND ND ND ND ND ND ND 5
Tota!VOCs 579.1 634 934 NA 935.6 664.9 1,050.3 NA 685.4 445.4 985.0 332.5 8.9 242.1 849.0 425.4 219.5 NA
NOTES:
Al! concentrations in micrograms per liter (µg/L) or parts per billion
ND
DL
NA
NS
1,500
1,400
1,300 .
1,200
1,100
~ 1,000
...J -Cl 900 ..:;
c: 800 0 :;::
"' ~ 700 -c: .,
" 600 c: 0
(.) 500
400
300
200
100
0
~ ~ & C§ ~ <§
!:-~ '!:' :y (g' (!?
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TOTAL voe CONCENTRATIONS DETECTED
MONITORING WELL MW-7
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Sample Date
!!,> <!? w <V f:' !:-:y :y
fi-10 <$' "
<:§:> (;§ ~ :y
§' rv ~ "
TABLE S-1
SUMMARY OF voes DETECTED IN GROUNDWATER -MW-13
HONBARRIER, INC. FACILITY
CHARLOTIE, MECKLENBURG COUNTY, NORTH CAROLINA
DELTA ENVIRONMENTAL PROJECT#: 5E0811448P
CONSTITUENT 12/19/97 04/28/98 05/18/99 06/29/99 12/16/99 06/27/00 12/11/00 06/15/01 12/05/01 12/30/02 12/03/03 12/02/04 12/09/05 12/12/06 12/27/07 12/06/08 12/22/09 DL
Benzene ND ND ND NS ND ND ND NS ND NAC NAC NAC NAC NAG NAG NAG NAG NA
Chlorobenzene 13 15 14 NS 12.1 15 13 NS 14 4.6 17 16.9 34 31 19.8 10 8.1 5
2-Ch!orotoluene ND ND ND NS ND ND ND NS ND NAG NAG NAG NAG NAG NAG NAG NAG NA
1,3-Dichlorobenzene ND ND ND NS ND ND ND NS ND ND ND ND ND ND ND ND ND 5
1,4-Dichlorobenzene 6.4 6.8 ND NS 4.4 5.2 ND NS ND 1.8 3.3 3.1 6.7 ND ND ND 2 5
1 , 1-Dichloroethane 16 9.6 5 NS 7.5 ND ND NS ND 2 4.8 1.8 ND ND ND ND ND 5
1, 1-0ichloroethene 13 6.9 5 NS 4.1 ND ND NS ND ND ND ND ND ND ND ND ND 5
cis-1, 2-0ichloroethene 150 140 131 NS 138 83 84 NS 83 43.1 77 98.5 170 240 223 249 376 5
trans-1,2-0lchloroethene ND ND ND NS ND ND ND NS ND ND 2.3 ND 3.1 6.7 9.6 12.2 16.7 5
1,2,4-Trichlorobenzene ND ND ND NS 2.1 ND ND NS ND NAG NAG NAG NAG NAG NAG NAC NAG NA
Trichloroethene 6 ND 2.5 NS ND ND ND NS ND ND ND ND ND ND ND ND ND 5
Vinyl Chloride 36 29 20 NS 13.5 12 10 NS 16 8.4 17 16.3 17 17 32.2 27.8 33 5
Xy!enes ND ND ND NS ND ND ND NS ND NAG NAC NAG NAC NAG NAC NAG NAG NA
Ethylbenzene ND ND ND NS ND ND ND NS ND NAG NAG NAG NAG NAG NAG NAC NAG NA
Toluene ND ND ND NS ND ND ND NS ND NAG NAG NAG NAG NAG NAG NAG NAG NA
Tetrachloroethene ND ND ND NS ND ND ND NS ND ND ND ND ND ND ND ND ND 5
Total voes 240.4 207.3 177.5 NA 181.7 115.2 107 NA 113 59.9 121.4 136.6 230.8 294.7 284.6 299.0 435.8 NA
NOTES:
Al! concentrations in micrograms per liter (µgfl) or parts per billion
ND
DL
NA
NS
NAC
:J
a, 300 -~~--'ff±f±'fff 2:
c:
0
"" 250 e -c: ..
§ 2001~~~~
(.)
150
0 L.2lZ:c22'.J~~
G;-cy
;::' :y
,§' Rt $i <:::;
& <§ :S:' ~
& id ;::' :y
TOTAL voe CONCENTRATIONS DETECTED
MONITORING WELL MW-13
§ ,:: " §' & !:? !'§ ~ § ;:::
,f;' <:::;
;::' :y ,!!} <V "
!:? 5? .:y fJI
rk f:V ? :y
fS' w ? :y
Sample Date
ff <V ;::' :y
!'.. ~ <$' "
~ >&
"" :y
(!; r\} ~ "
TABLE S-1
SUMMARY OF voes DETECTED IN GROUNDWATER -MW-19
HONBARRIER, INC. FACILITY
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
DELTA ENVIRONMENTAL PROJECT#: 5E0811448P
CONSTITUENT 12119197 04128/98 05/18199 06/29199 12/16/99 06/27/00 12111/00 06/15/01 12/05/01 12/30/02 12/03/03 12102104 12109/05 12112/06 12127/07 12106/08 12122/09 DL
Benzene NP NS ND ND ND ND ND ND ND NAC NAC NAC NAC NAC NAC NAC NAC NA
Chlorobenzene NP NS ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1
2HChlorotoluene NP NS ND ND ND ND ND ND ND NAC NAC NAC NAC NAC NAC NAC NAC NA
1,3-Dichlorobenzene NP NS ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1
1,4-Dichlorobenzene NP NS ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1
1, 1-Dich!oroethane NP NS 11 3.5 7.5 9.1 5.6 8.4 ND 4.3 5.0 2.3 11 6.0 ND ND ND 1
1, 1-Dichloroethene NP NS 9.4 ND 5.5 7.3 ND 4.2 ND ND ND ND 2.7 1.1 1.9 3.5 4 1
cis-1,2-Dichloroethene NP NS 26 16.3 18.5 23 8.3 21.9 8.7 6.9 15 8.2 13 18 4.7 15.3 23.9 1
trans-1,2-Dichloroethene NP NS ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1
1,2,4-Trichlorobenzene NP NS ND ND ND ND ND ND ND NAC NAC NAC NAC NAC NAC NAC NAC NA
Trichloroethene NP NS ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1
Vinyl Chloride NP NS ND ND ND ND ND 6.2 ND 2.8 3.1 ND 11 3.3 ND 1.9 5.7 1
Xylenes NP NS ND ND ND ND ND ND ND NAC NAC NAC NAC NAC NAC NAC NAC NA
Ethy!benzene NP NS ND ND ND ND ND ND ND NAC NAC NAG NAC NAC NAC NAC NAC NA
Toluene NP NS ND ND ND ND ND ND ND NAC NAC NAC NAC NAC NAC NAC NAG NA
T etrachloroethene NP NS ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1
Total voes NA NA 46.4 19.8 31.5 39.4 13.9 40.7 8.7 14.0 23.1 10.5 37.7 28.4 6.6 20.7 33.6 NA
NOTES:
All concentrations in micrograms per liter (ugll) or parts per billion
ND
DL
NA
NS
NP
NAC