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AMEC Environmental & Infrastructure, Inc.
502 West Germantown Pike, Suite 850
Plymouth Meeting, PA 19462
610.828.8100 / fax: 610.828.6700 www.amec.com
August 22, 2013
Dr. James Van Nortwick
GE Corporate Environmental Programs
500 West Monroe Street- 10th Floor
Chicago, Illinois 60661
Re: Vapor Intrusion Assessment Report
GE Trailer Fleet Services
1906 Bancroft Street in Charlotte, North Carolina
AMEC Project: 572260702
Dear Dr. Van Nortwick:
AMEC Environment & Infrastructure, Inc. (AMEC) is pleased to report the findings of the sub-
slab soil vapor sampling performed at 1906 Bancroft Street in Charlotte, North Carolina (Site).
The purpose of this sampling was to determine if gases volatilizing from potentially impacted
shallow groundwater may be adversely impacting indoor air quality in the on-site structures.
This investigation was completed in accordance to the North Carolina Department of
Environment and Natural Resources (NCDENR), Division of Waste Management (DWM)
Inactive Hazardous Sites Branch (IHSB) guidance. The investigation concluded that the sub-
slab vapor survey did not identify adverse risk to Site occupants in a slab-on-grade structure
based on the IHSB Industrial/Commercial (i.e., non-residential) Site use.
Should you have any questions regarding this assessment report, please contact Stephen Cline
at (610) 828-8100.
Respectfully Submitted,
AMEC Environment & Infrastructure, Inc.
Steven Tanen Stephen P. Cline
Senior Project Geologist Associate Geologist
Attachment
TABLE OF CONTENTS
1.0 INTRODUCTION ............................................................................................................ 1
1.1 Background ................................................................................................................. 1
2.0 SAMPLING ACTIVITIES ............................................................................................... 2
3.0 ANALYTICAL RESULTS .............................................................................................. 4
3.1 Sub-slab Air Sampling Results .................................................................................... 4
3.2 Risk Calculations ......................................................................................................... 4
4.0 SUMMATION ................................................................................................................. 5
FIGURES
Figure 1 Site Location Map
Figure 2 Site Layout
Figure 3 Groundwater Sampling Exceedences – 6/16/11
Figure 4 Sub-slab Sample Locations
Figure 5 Sub-slab Vapor Data
TABLES
Table 1 Groundwater Analytical Results – Detected VOCs
Table 2 Sub-slab Sample Information – Volatile Organic Compounds
Table 3 Sub-slab Sample Results – Volatile Organic Compounds
APPENDICES
Appendix A Photo Log - August 2012 Vapor Intrusion Sampling Event
Appendix B Laboratory Analytical Data Report
Appendix C Risk Calculations
Results of Sub-slab Vapor Sampling
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
-1-
1.0 INTRODUCTION
AMEC Environment & Infrastructure, Inc. (AMEC) was retained by Transport International Pool,
Inc. (TFS) to conduct an indoor vapor assessment for the property located at 1906 Bancroft
Street in Charlotte, North Carolina (Figure 1) (the “Site”). This TFS property consists of
approximately 7.93 acres and is improved with a 3,750 square foot slab-on-grade shop building.
1.1 Background
TFS owns but no longer occupies the Site, which is currently vacant. TFS used the Site from
1986 to 2011 as a branch location for the leasing, parking, storage, and minor repair of over-
the-road trailers. Prior to 1986 the property was undeveloped woodland. The general layout of
the Site while it was operational is shown on Figure 2.
The Site is located in an area with mixed industrial and commercial use, with several industrial
and commercial establishments located within a half mile both north and west of the Site.
Residential properties are located southwest of the property. A number of the upgradient
industrial/commercial properties have a history of solvent use and confirmed impacts to soil and
groundwater. based on a search of environmental databases and review of readily available
reports.
Phase II investigations completed at the Site by AMEC for TFS did not detect any volatile
organic compounds (VOCs) in soil other than acetone and methyl ethyl ketone (MEK). Both
compounds were detected at estimated concentrations and below NCDENR Soil Remediation
Goals. Neither acetone nor MEK were detected in groundwater and both were identified as
likely laboratory and/or sample preservations artifacts and, therefore, judged not to be
representative of actual Site conditions. However, the same investigations revealed impacts to
Site groundwater in the southern portion of the parcel at both the upgradient and downgradient
Site boundaries from chloroform, carbon tetrachloride, 1,1-dichloroethane (1,1-DCA), 1,1-
dichloroethene (1,1-DCE), cis-1,2-Dichloroethene (cis-1,2-DCE), trans-1,2-dichloroethene
(trans-1,2-DCE), tetrachloroethene (PCE) and trichloroethene (TCE). The compounds carbon
tetrachloride, 1,1-DCE, PCE and TCE were detected at concentrations above the North
Carolina Department of Environment and Natural Resources (NCDENR) 2L Groundwater
Quality Standards. Results from groundwater testing are provided in Table 1 and groundwater
sampling locations are shown on Figure 3. These results appear to be due to releases from an
upgradient source, which has had documented use and confirmed releases of such solvents.
Due to identified groundwater impacts at the Site within 100 feet of the on-site shop building,
TFS authorized collection of sub-slab soil vapor samples from beneath that building to
determine if gases volatizing from impacted shallow groundwater may be impacting indoor air
quality.
The following sections summarize the activities completed with regard to the vapor sampling
and the results obtained from those activities.
Results of Sub-slab Vapor Sampling
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
-2-
2.0 SAMPLING ACTIVITIES
The Site consists of a slab on grade shop building (”shop”) (Figure 2), which covers
approximately 3,750 square feet. Prior to any sub-slab sampling, North Carolina One-Call was
notified in accordance with State requirements and utilities marked (ticket confirmation number:
A122231658).
Four sub-slab vapor samples (SS-1 through SS-4) were collected inside of the shop, along with
one duplicate sample (SS-5) for sample SS-1.
The building was gridded into four sections with one sample collected from each section.
Sample locations are shown on Figure 2. All sub-slab vapor samples were collected from
immediately beneath the concrete slab inside the building (Figure 4). A small hole was bored
through the concrete floor and then inert 0.170 x 0.25-inch polyethylene tubing equipped with a
sterile stainless steel screen covering its orifice was installed in the borehole within two inches
of the bottom of the slab. Sand-sized glass beads were used as backfill material to fill the
sampling area to a depth such that the bottom one inch of the tubing was covered. The
remaining space within the hole was filled with volatile organic carbon (VOC)-free bentonite
pellets, which were then hydrated to seal the tubing in place and to isolate the sample point
from ambient air conditions within the shop. The remaining annulus was filled with grout to the
top of the floor slab.
Once the grout had set, the tubing was purged to remove air introduced to the sub-slab airspace
during concrete boring and tubing installation, as well as the ambient air within the tubing. One
liter of air was purged using a peristaltic pump prior to sampling. In order to minimize ambient
air intrusion, air flow was maintained at a rate below 200 milliliters per minute during purging.
After purging, the tubing was immediately connected to a batch certified 1-liter summa canister
for air collection. The sample was collected with a flow controller that regulated air flow to fill the
summa canister at a constant rate over a 30 minute period. The summa canister identification
number, sampler identification number, pump start and end time, and the starting and ending
summa canister vacuums were recorded (Table 2).
For one sample (SS-1), helium was employed as a tracer gas to provide a means of assessing
whether air from above the slab was able to pass through the bentonite seal during sampling.
To achieve this, a plastic bag filled with helium was placed over the tubing and borehole
throughout the sampling period. Photographs of the sampling activities are provided in
Appendix A.
The samples were transported under strict chain-of-custody protocol to Air Toxics, Ltd., of
Folsom, California, for analysis of United States Environmental Protection Agency (USEPA)
Method TO-15 constituents (carbon tetrachloride, chloroethane, chloroform, chloromethane,
1,1-DCA, 1,1-DCE, cis-1,2-DCE, trans-1,2-DCE, ethanol, methylene chloride, PCE, TCE, 1,1,1-
trichloroethane and vinyl chloride). Following sample collection, the slab was repaired with
cement grout.
Results of Sub-slab Vapor Sampling
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
-3-
The sampling event was conducted in accordance with the NCDENR procedures presented in
the document Supplemental Guidelines for the Evaluation of Structural Vapor Intrusion Potential
for Site Assessments and Remedial Actions Under the Inactive Hazardous Sites Branch, dated
June 21, 2011.
Results of Sub-slab Vapor Sampling
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
-4-
3.0 ANALYTICAL RESULTS
3.1 Sub-slab Air Sampling Results
Analytical results were reported in micrograms per cubic meter (µg/m3) and have been
compared to the NCDENR Division of Waste Management (DWM) Inactive Hazardous Sites
Branch (IHSB) Industrial/Commercial soil gas screening levels. PCE was present in each sub-
slab sample at concentrations below the PCE IHSB soil gas industrial/commercial screening
level (350 µg/m3). Reported concentrations for PCE ranged from 18 to 230 µg/m3 with the
highest concentration detected in sample SS-2. Sample SS-2 was located in the western
quadrant of the Site building. No other constituents were detected. Sub-slab sampling results
are presented in Table 3 and are summarized on Figure 5.
Sample SS-5 was collected as a duplicate of SS-1 to assess the overall precision and
reproducibility of data as it pertains to both field collection methods and laboratory analysis.
These samples exhibited PCE concentrations of 62 µg/m3 (SS-1) and 64 µg/m3 (SS-5),
respectively. The calculated relative percent difference (RPD) between the two samples is 3.1-
percent. An RPD of less than 10-percent indicates a good correlation between the two samples
and these results are within an acceptable range of accuracy. The laboratory analytical report
and chain-of-custody documentation are included in Appendix B.
3.2 Risk Calculations
As stated above, PCE was present at concentrations below its respective soil gas
industrial/commercial screening level, 350 µg/m3. This screening level is based on a
carcinogenic target risk of 1 x 10-5 and a hazard index (HI) of 0.2. These values include a safety
factor to account for the synergistic effect of an additional four VOCs.
For additional comparison, AMEC calculated the cumulative risk associated with each of the
samples based on PCE only (i.e., the only compound detected). The concentrations were
compared to USEPA Regional Screening Levels (RSL) for Industrial Air (April 2012). The RSLs
are based on Carcinogenic Target Risk of 10-6 and non-cancer HI of 1. The risk based
calculations are provided in Appendix C and summarized below.
When evaluating soil gas and sub-slab sampling results at commercial/industrial sites, a 90 fold
attenuation factor is applied to account for the concrete slab material which impedes the upward
movement of the vapors1. This 100 fold attenuation factor was applied so the results could be
compared to indoor air vapor standards. These calculation tables are provided in Appendix C.
The risk calculations for PCE indicate that, at the highest concentration observed (230 µg/m3
PCE in sample SS-2), the cumulative risk value, when the 100 fold attenuation factor is applied,
is less than 10-8 with a hazard index of 0.01.
1 USEPA Vapor Intrusion Guidance, December 13, 2012
Results of Sub-slab Vapor Sampling
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
-5-
4.0 SUMMATION
Sub-slab samples were collected at four locations beneath the at-grade floor slab in the shop.
The samples were collected to evaluate the potential for vapor intrusion from groundwater into
the building. The VOCs detected in groundwater at the Site were not detected in Site soils.
Acetone and MEK were detected in Site soils at estimated concentrations and were judged to
be likely laboratory and/or sample preservation artifacts.
The results showed that each sub-slab vapor sample exhibited PCE at a concentration below its
IHSB soil gas industrial/commercial screening level, but above its method detection limit. No
other VOCs were detected in the samples collected.
The sub-slab results were also compared to USEPA RSLs for Industrial Air. The RSLs are
based on a Carcinogenic Target Risk of 10-6 and non-cancer HI of 1. When considering a 100
fold attenuation factor to account for the concrete slab, in order to compare the Site results to
indoor air vapor standards, the Carcinogenic Target Risk is 10-8 and the HI is 0.01.
Based on the sub-slab vapor sampling results from this investigation, additional air sampling
within the shop building is not warranted as the observed concentrations pose no adverse risk
to building occupants. The sub-slab vapor survey did not identify adverse risk to Site occupants
in a slab-on-grade structure based on the IHSB Industrial/Commercial (i.e., non-residential) Site
use.
Results of Sub-slab Vapor Sampling
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
FIGURES
TFS Charlotte Branch Location
Vapor Intrusion Assessment
1906 Bancroft Street
Charlotte, North Carolina
TFS Charlotte Branch Location
Vapor Intrusion Assessment
1906 Bancroft Street
Charlotte, North Carolina
Figure 2
Site Layout
Environment & Infrastructure, Inc.
502 West Germantown Pike, Suite 850
Plymouth Meeting PA 19462
Modular
Office
Shop
Building
Aerial of Site while Site
operational (i.e., pre‐2012)
Site at time of Vapor
Intrusion Survey was
vacant.
TFS Charlotte Branch Location
Vapor Intrusion Assessment
1906 Bancroft Street
Charlotte, North Carolina
Figure 3
Groundwater Exceedences 6/16/11
Environment & Infrastructure, Inc.
502 West Germantown Pike, Suite 850
Plymouth Meeting PA 19462
0 50 100
Approximate Scale in Feet
ref: www.maps.google.com
Monitoring well
µg/L micrograms per Liter
NE No Exceedances
MW‐5
NE
MW‐8
NE
MW‐3
NE
MW‐4
NE
MW‐1
ug/L Conc Criteria
11DCE 11.2 7
PCE 111 0.7
TCE 143 3
MW‐2
ug/L Conc Criteria
Carbon Tet 1.8 0.3
MW‐6
ug/L Conc Criteria
TCE 17.7 3
MW‐7
ug/L Conc Criteria
11DCE 16.5 7
PCE 103 0.7
TCE 90.1 3
MW‐9
ug/L Conc Criteria
PCE 5.6 0.7
TCE 2.9 3
TFS Charlotte Branch Location
Vapor Intrusion Assessment
1906 Bancroft Street
Charlotte, North Carolina
Figure 4
Sub-slab Sample Locations
Environment & Infrastructure, Inc.
502 West Germantown Pike, Suite 850
Plymouth Meeting PA 19462
Sub‐slab Sample Location
Mecklenburg County Parcel
Aerial of Site while Site
operational (i.e., pre‐2012)
Site at time of Vapor
Intrusion Survey was
vacant.
TFS Charlotte Branch Location
Vapor Intrusion Assessment
1906 Bancroft Street
Charlotte, North Carolina
Figure 5
Sub-Slab Vapor Data
Environment & Infrastructure, Inc.
502 West Germantown Pike, Suite 850
Plymouth Meeting PA 19462
Legend
Sub‐Slab Sampling Location
PCE: Tetrachloroethene
Units: micrograms per cubic meter (µg/m3)
350 µg/m3: PCE IHSB (Industrial) Acceptable Soil Gas Concentration
PCE 62
PCE 18 PCE 230
PCE 18
Aerial of Site while Site
operational (i.e., pre‐2012)
Site at time of Vapor
Intrusion Survey was
vacant.
Results of Sub-slab Vapor Sampling
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
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MW-7
M
W
-
8
M
W
-
9
F8
2
0
3
8
-
1
F
8
3
5
2
0
-
3
F
8
2
0
3
8
-
2
F
8
3
5
2
0
-
4
F
8
2
0
3
8
-
3
F
8
3
5
2
0
-
2
F
8
3
5
2
0
-
5
5/
2
/
2
0
1
1
6
/
1
7
/
2
0
1
1
5
/
2
/
2
0
1
1
6
/
1
6
/
2
0
1
1
5
/
3
/
2
0
1
1
6
/
1
6
/
2
0
1
1
F83520-6
F
8
3
5
2
0
-
7
F
8
3
5
2
0
-
8
6/16/2011
5/
3
/
2
0
1
1
6
/
1
6
/
2
0
1
1
5
/
3
/
2
0
1
1
6
/
1
6
/
2
0
1
1
6
/
1
6
/
2
0
1
1
6
/
1
6
/
2
0
1
1
6
/
1
6
/
2
0
1
1
Table 2
Sub-slab Sample Information - Volatile Organic Compounds
TFS - Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
August 2012
Date Canister
Serial #Certification
Flow
Controller
Serial #
Start Time End Time
Start
Vacuum
(inches Hg)
End
Vacuum
(inches Hg)
8/15/2012 22968 Batch 40825 1048 1146 -28.5 -3.5
8/15/2012 37684 Batch FC00408 1158 1252 -29.5 -4
8/15/2012 37325 Batch FC00563 1132 1217 -29 -3.5
8/15/2012 37398 Batch FC00680 1149 1250 -30 -3.5
8/15/2012 37390 Batch FC00211 1151 1310 -26.5 -0.5
Sample Date Time
Wind Speed
(mph)
1052 5.8
1152 3.5
1252 5.8
1352 3.5
Notes:
* = Duplicate sample of SS-1
Weather Condition Details
Air Sample Details
Sample
SS-1
SS-2
SS-3
SS-4
SS-5*
8/15/2012
Temperature
ºF
79
81
82
82
Humidity
(%)
29.94
29.94
29.94
29.94
Pressure
(inches Hg)
77
72
69
67
Ta
b
l
e
3
Su
b
-
S
l
a
b
S
a
m
p
l
e
R
e
s
u
l
t
s
–
V
o
l
a
t
i
l
e
O
r
g
a
n
i
c
C
o
m
p
o
u
n
d
s
TF
S
-
C
h
a
r
l
o
t
t
e
B
r
a
n
c
h
19
0
6
B
a
n
c
r
o
f
t
S
t
r
e
e
t
,
C
h
a
r
l
o
t
t
e
,
N
o
r
t
h
C
a
r
o
l
i
n
a
Au
g
u
s
t
2
0
1
2
Sa
m
p
l
e
I
D
S
a
m
p
l
e
D
a
t
e
C
a
r
b
o
n
T
e
t
r
a
c
h
l
o
r
i
d
e
C
h
l
o
r
o
e
t
h
a
n
e
C
h
l
o
r
o
f
o
r
m
C
h
l
o
r
o
m
e
t
h
a
n
e
1
,
1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e
1
,
1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e
c
i
s
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e
t
r
a
n
s
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e
E
t
h
a
n
o
l
M
e
t
h
y
l
e
n
e
C
h
l
o
r
i
d
e
T
e
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e
T
r
i
c
h
l
o
r
o
e
t
h
e
n
e
1
,
1
,
1
-
T
r
i
c
h
l
o
r
o
e
t
h
a
n
e
V
i
n
y
l
C
h
l
o
r
i
d
e
Helium**
20
0
N
A
5
3
7
8
0
7
7
0
1
,
7
6
0
.
0
N
A
5
2
0
N
A
5
,
3
0
0
3
5
0
1
8
4
4
,
0
0
0
2
8
0
N
A
ASTM D-1946 (µg/L)
SS
-
1
8
/
1
5
/
2
0
1
2
<
4
.
7
<
7
.
9
<
3
.
6
<
1
5
<
3
.
0
<
3
.
0
<
3
.
0
<
3
.
0
<
5
.
6
<
2
6
6
2
<
4
.
0
<
4
.
1
<
1
.
9
<
1
6
3
.
6
SS
-
2
8
/
1
5
/
2
0
1
2
<
4
.
8
<
8
.
0
<
3
.
7
<
1
6
<
3
.
1
<
3
.
0
<
3
.
0
<
3
.
0
<
5
.
7
<
2
6
2
3
0
<
4
.
1
<
4
.
1
<
1
.
9
N
R
SS
-
3
8
/
1
5
/
2
0
1
2
<
5
.
0
<
8
.
3
<
3
.
8
<
1
6
<
3
.
2
<
3
.
1
<
3
.
1
<
3
.
1
<
6
.
0
<
2
7
1
8
<
4
.
2
<
4
.
3
<
2
.
0
N
R
SS
-
4
8
/
1
5
/
2
0
1
2
<
4
.
9
<
8
.
2
<
3
.
8
<
1
6
<
3
.
1
<
3
.
1
<
3
.
1
<
3
.
1
<
5
.
8
<
2
7
1
8
<
4
.
2
<
4
.
2
<
2
.
0
N
R
SS
-
5
(
S
S
-
1
D
u
p
)
*
8
/
1
5
/
2
0
1
2
<
4
.
5
<
7
.
6
<
3
.
5
<
1
5
<
2
.
9
<
2
.
8
<
2
.
8
<
2
.
8
<
5
.
4
<
2
5
6
4
<
3
.
9
<
3
.
9
<
1
.
8
N
R
No
t
e
s
µg
/
m
3 =
m
i
c
r
o
g
r
a
m
s
p
e
r
c
u
b
i
c
m
e
t
e
r
IH
S
B
=
I
n
a
c
t
i
v
e
H
a
z
a
r
d
o
u
s
S
i
t
e
s
B
r
a
n
c
h
(
J
u
l
y
2
0
1
2
)
NE
=
N
o
t
e
s
t
a
b
l
i
s
h
e
d
NR
=
N
o
t
r
e
p
o
r
t
e
d
*
=
D
u
p
l
i
c
a
t
e
s
a
m
p
l
e
o
f
S
S
-
1
**
=
S
a
m
p
l
e
r
e
s
u
l
t
s
w
i
t
h
a
c
o
n
c
e
n
t
r
a
t
i
o
n
o
f
u
p
t
o
2
0
0
µ
g
/
l
a
r
e
c
o
n
s
i
d
e
r
e
d
u
s
a
b
l
e
a
c
c
o
r
d
i
n
g
t
o
I
H
S
B
G
u
i
d
a
n
c
e
IH
S
B
A
c
c
e
p
t
a
b
l
e
S
o
i
l
G
a
s
Co
n
c
e
n
t
r
a
t
i
o
n
-
In
d
u
s
t
r
i
a
l
/
C
o
m
m
e
r
c
i
a
l
VO
C
T
O
-
1
5
(
µ
g
/
m
3
)
Su
b
-
S
l
a
b
S
a
m
p
l
e
s
Results of Sub-slab Vapor Sampling
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
APPENDIX A
Photo 1
Sub-slab samples SS-2 (top)
and SS-3 (bottom). View is
facing northwest.
Photo 2
Sub-slab samples SS-3 (top)
and SS-2 (bottom). View is
facing southeast.
PHOTOGRAPH LOG
4021 Stirrup Creek Drive, Suite 100Durham, NC 27703
PROCESSED Anthony Kellogg
DATE 9/5/2012
PAGE
PHOTOGRAPH LOG
August 2012 Vapor Intrusion Sampling Event
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, NC1
Photo 3
Sub-slab samples SS-1/SS-5
(top) and SS-2 (bottom).
View is facing north.
Photo 4
Sub-slab samples SS-1/SS-
5 (bottom) and SS-4 (top).
View is facing southeast.
PHOTOGRAPH LOG
4021 Stirrup Creek Drive, Suite 100Durham, NC 27703
PROCESSED Anthony Kellogg
DATE 9/5/2012
PAGE
PHOTOGRAPH LOG
August 2012 Vapor Intrusion Sampling Event
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, NC2
Photo 5
A view of a patched boring pg
location. Each boring was
patched to surface with
grout.
PHOTOGRAPH LOG
4021 Stirrup Creek Drive, Suite 100Durham, NC 27703
PROCESSED Anthony Kellogg
DATE 9/5/2012
PAGE
PHOTOGRAPH LOG
August 2012 Vapor Intrusion Sampling Event
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, NC3
Results of Sub-slab Vapor Sampling
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
APPENDIX B
9/2/2012
Mr. Anthony Kellogg
AMEC Environment & Infrastructure
4021 Stirrup Creek Drive
Suite 100
Durham NC 27703
Project Name: GE-CHARLOTTE
Project #: GE-CHARLOTTE
Dear Mr. Anthony Kellogg
The following report includes the data for the above referenced project for sample(s)
received on 8/17/2012 at Air Toxics Ltd.
The data and associated QC analyzed by Modified TO-15 are compliant with the
project requirements or laboratory criteria with the exception of the deviations noted in
the attached case narrative.
Thank you for choosing Air Toxics Ltd. for your air analysis needs. Air Toxics Ltd. is
committed to providing accurate data of the highest quality. Please feel free to contact
the Project Manager: Ausha Scott at 916-985-1000 if you have any questions regarding
the data in this report.
Regards,
Ausha Scott
Project Manager
Workorder #: 1208404A
Page 1 of 17
Mr. Anthony Kellogg
AMEC Environment & Infrastructure
4021 Stirrup Creek Drive
Suite 100
Durham, NC 27703
WORK ORDER #:1208404A
CLIENT:BILL TO:
PHONE:
Accounts Payable-Durham
AMEC Environment & Infrastructure
4021 Stirrup Creek Drive
Suite 100
Durham, NC 27703
919-381-9900
08/17/2012
DATE COMPLETED:09/02/2012
P.O. #C012500874
PROJECT #GE-CHARLOTTE GE-CHARLOTTE
Work Order Summary
FAX:
DATE RECEIVED:CONTACT:Ausha Scott
NAMEFRACTION #TEST VAC./PRES.
RECEIPT
PRESSURE
FINAL
01A SS-1 Modified TO-15 3.0 "Hg 5 psi
02A SS-2 Modified TO-15 3.5 "Hg 5 psi
03A SS-3 Modified TO-15 4.5 "Hg 5 psi
04A SS-4 Modified TO-15 4.0 "Hg 5 psi
05A SS-5 Modified TO-15 2.0 "Hg 5 psi
06A Lab Blank Modified TO-15 NA NA
06B Lab Blank Modified TO-15 NA NA
07A CCV Modified TO-15 NA NA
07B CCV Modified TO-15 NA NA
08A LCS Modified TO-15 NA NA
08AA LCSD Modified TO-15 NA NA
08B LCS Modified TO-15 NA NA
08BB LCSD Modified TO-15 NA NA
CERTIFIED BY:
Technical Director
DATE:
Name of Accrediting Agency: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program)
Accreditation number: CA300005, Effective date: 10/18/2011, Expiration date: 10/17/2012.
180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA - 9563
(916) 985-1000 . (800) 985-5955 . FAX (916) 985-1020
09/02/12
Page 2 of 17
This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc.
Eurofins Air Toxics Ltd. certifies that the test results contained in this report meet all requirements of the NELAC standards
Certfication numbers: AZ Licensure AZ0775, CA NELAP - 12282CA, NY NELAP - 11291,
TX NELAP - T104704434-12-5, UT NELAP CA009332012-3, WA NELAP - C935
LABORATORY NARRATIVEEPA Method TO-15AMEC Environment & InfrastructureWorkorder# 1208404A
Five 1 Liter Summa Canister samples were received on August 17, 2012. The laboratory performed
analysis via EPA Method TO-15 using GC/MS in the full scan mode.
This workorder was independently validated prior to submittal using 'USEPA National Functional
Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic
driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant
project quality control requirements and verification of all quantified amounts.
There were no receiving discrepancies.
Receiving Notes
All Quality Control Limit exceedances and affected sample results are noted by flags. Each flag is defined
at the bottom of this Case Narrative and on each Sample Result Summary page.
Analytical Notes
Eight qualifiers may have been used on the data analysis sheets and indicates as follows:
B - Compound present in laboratory blank greater than reporting limit (background subtraction not
performed).
J - Estimated value.
E - Exceeds instrument calibration range.
S - Saturated peak.
Q - Exceeds quality control limits.
U - Compound analyzed for but not detected above the reporting limit.
UJ- Non-detected compound associated with low bias in the CCV and/or LCS.
N - The identification is based on presumptive evidence.
File extensions may have been used on the data analysis sheets and indicates
as follows:
a-File was requantified
b-File was quantified by a second column and detector
r1-File was requantified for the purpose of reissue
Definition of Data Qualifying Flags
Page 3 of 17
EPA METHOD TO-15 GC/MS FULL SCAN
Summary of Detected Compounds
Client Sample ID: SS-1
Lab ID#: 1208404A-01A
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
0.74 9.1 5.0 62Tetrachloroethene
Client Sample ID: SS-2
Lab ID#: 1208404A-02A
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
0.76 34 5.2 230Tetrachloroethene
Client Sample ID: SS-3
Lab ID#: 1208404A-03A
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
0.79 2.7 5.4 18Tetrachloroethene
Client Sample ID: SS-4
Lab ID#: 1208404A-04A
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
0.78 2.7 5.2 18Tetrachloroethene
Client Sample ID: SS-5
Lab ID#: 1208404A-05A
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
0.72 9.4 4.9 64Tetrachloroethene
Page 4 of 17
Client Sample ID: SS-1
Lab ID#: 1208404A-01A
EPA METHOD TO-15 GC/MS FULL SCAN
2082331File Name:
Dil. Factor:1.49
Date of Collection: 8/15/12 11:46:00 AM
Date of Analysis: 8/24/12 01:36 PM
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
7.4 Not Detected 15 Not DetectedChloromethane
0.74 Not Detected 1.9 Not DetectedVinyl Chloride
3.0 Not Detected 7.9 Not DetectedChloroethane
3.0 Not Detected 5.6 Not DetectedEthanol
0.74 Not Detected 3.0 Not Detected1,1-Dichloroethene
7.4 Not Detected 26 Not DetectedMethylene Chloride
0.74 Not Detected 3.0 Not Detectedtrans-1,2-Dichloroethene
0.74 Not Detected 3.0 Not Detected1,1-Dichloroethane
0.74 Not Detected 3.0 Not Detectedcis-1,2-Dichloroethene
0.74 Not Detected 3.6 Not DetectedChloroform
0.74 Not Detected 4.1 Not Detected1,1,1-Trichloroethane
0.74 Not Detected 4.7 Not DetectedCarbon Tetrachloride
0.74 Not Detected 4.0 Not DetectedTrichloroethene
0.74 9.1 5.0 62Tetrachloroethene
Container Type: 1 Liter Summa Canister
Limits%RecoverySurrogates
Method
100 70-130Toluene-d8
103 70-1301,2-Dichloroethane-d4
105 70-1304-Bromofluorobenzene
Page 5 of 17
Client Sample ID: SS-2
Lab ID#: 1208404A-02A
EPA METHOD TO-15 GC/MS FULL SCAN
2082332File Name:
Dil. Factor:1.52
Date of Collection: 8/15/12 12:52:00 PM
Date of Analysis: 8/24/12 02:25 PM
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
7.6 Not Detected 16 Not DetectedChloromethane
0.76 Not Detected 1.9 Not DetectedVinyl Chloride
3.0 Not Detected 8.0 Not DetectedChloroethane
3.0 Not Detected 5.7 Not DetectedEthanol
0.76 Not Detected 3.0 Not Detected1,1-Dichloroethene
7.6 Not Detected 26 Not DetectedMethylene Chloride
0.76 Not Detected 3.0 Not Detectedtrans-1,2-Dichloroethene
0.76 Not Detected 3.1 Not Detected1,1-Dichloroethane
0.76 Not Detected 3.0 Not Detectedcis-1,2-Dichloroethene
0.76 Not Detected 3.7 Not DetectedChloroform
0.76 Not Detected 4.1 Not Detected1,1,1-Trichloroethane
0.76 Not Detected 4.8 Not DetectedCarbon Tetrachloride
0.76 Not Detected 4.1 Not DetectedTrichloroethene
0.76 34 5.2 230Tetrachloroethene
Container Type: 1 Liter Summa Canister
Limits%RecoverySurrogates
Method
101 70-130Toluene-d8
104 70-1301,2-Dichloroethane-d4
100 70-1304-Bromofluorobenzene
Page 6 of 17
Client Sample ID: SS-3
Lab ID#: 1208404A-03A
EPA METHOD TO-15 GC/MS FULL SCAN
2082333File Name:
Dil. Factor:1.58
Date of Collection: 8/15/12 12:17:00 PM
Date of Analysis: 8/24/12 03:11 PM
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
7.9 Not Detected 16 Not DetectedChloromethane
0.79 Not Detected 2.0 Not DetectedVinyl Chloride
3.2 Not Detected 8.3 Not DetectedChloroethane
3.2 Not Detected 6.0 Not DetectedEthanol
0.79 Not Detected 3.1 Not Detected1,1-Dichloroethene
7.9 Not Detected 27 Not DetectedMethylene Chloride
0.79 Not Detected 3.1 Not Detectedtrans-1,2-Dichloroethene
0.79 Not Detected 3.2 Not Detected1,1-Dichloroethane
0.79 Not Detected 3.1 Not Detectedcis-1,2-Dichloroethene
0.79 Not Detected 3.8 Not DetectedChloroform
0.79 Not Detected 4.3 Not Detected1,1,1-Trichloroethane
0.79 Not Detected 5.0 Not DetectedCarbon Tetrachloride
0.79 Not Detected 4.2 Not DetectedTrichloroethene
0.79 2.7 5.4 18Tetrachloroethene
Container Type: 1 Liter Summa Canister
Limits%RecoverySurrogates
Method
99 70-130Toluene-d8
104 70-1301,2-Dichloroethane-d4
99 70-1304-Bromofluorobenzene
Page 7 of 17
Client Sample ID: SS-4
Lab ID#: 1208404A-04A
EPA METHOD TO-15 GC/MS FULL SCAN
2082334File Name:
Dil. Factor:1.55
Date of Collection: 8/15/12 12:50:00 PM
Date of Analysis: 8/24/12 03:55 PM
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
7.8 Not Detected 16 Not DetectedChloromethane
0.78 Not Detected 2.0 Not DetectedVinyl Chloride
3.1 Not Detected 8.2 Not DetectedChloroethane
3.1 Not Detected 5.8 Not DetectedEthanol
0.78 Not Detected 3.1 Not Detected1,1-Dichloroethene
7.8 Not Detected 27 Not DetectedMethylene Chloride
0.78 Not Detected 3.1 Not Detectedtrans-1,2-Dichloroethene
0.78 Not Detected 3.1 Not Detected1,1-Dichloroethane
0.78 Not Detected 3.1 Not Detectedcis-1,2-Dichloroethene
0.78 Not Detected 3.8 Not DetectedChloroform
0.78 Not Detected 4.2 Not Detected1,1,1-Trichloroethane
0.78 Not Detected 4.9 Not DetectedCarbon Tetrachloride
0.78 Not Detected 4.2 Not DetectedTrichloroethene
0.78 2.7 5.2 18Tetrachloroethene
Container Type: 1 Liter Summa Canister
Limits%RecoverySurrogates
Method
100 70-130Toluene-d8
97 70-1301,2-Dichloroethane-d4
100 70-1304-Bromofluorobenzene
Page 8 of 17
Client Sample ID: SS-5
Lab ID#: 1208404A-05A
EPA METHOD TO-15 GC/MS FULL SCAN
2082406File Name:
Dil. Factor:1.44
Date of Collection: 8/15/12 1:10:00 PM
Date of Analysis: 8/24/12 08:37 PM
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
7.2 Not Detected 15 Not DetectedChloromethane
0.72 Not Detected 1.8 Not DetectedVinyl Chloride
2.9 Not Detected 7.6 Not DetectedChloroethane
2.9 Not Detected 5.4 Not DetectedEthanol
0.72 Not Detected 2.8 Not Detected1,1-Dichloroethene
7.2 Not Detected 25 Not DetectedMethylene Chloride
0.72 Not Detected 2.8 Not Detectedtrans-1,2-Dichloroethene
0.72 Not Detected 2.9 Not Detected1,1-Dichloroethane
0.72 Not Detected 2.8 Not Detectedcis-1,2-Dichloroethene
0.72 Not Detected 3.5 Not DetectedChloroform
0.72 Not Detected 3.9 Not Detected1,1,1-Trichloroethane
0.72 Not Detected 4.5 Not DetectedCarbon Tetrachloride
0.72 Not Detected 3.9 Not DetectedTrichloroethene
0.72 9.4 4.9 64Tetrachloroethene
Container Type: 1 Liter Summa Canister
Limits%RecoverySurrogates
Method
101 70-130Toluene-d8
101 70-1301,2-Dichloroethane-d4
99 70-1304-Bromofluorobenzene
Page 9 of 17
Client Sample ID: Lab Blank
Lab ID#: 1208404A-06A
EPA METHOD TO-15 GC/MS FULL SCAN
2082330File Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/24/12 12:24 PM
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
5.0 Not Detected 10 Not DetectedChloromethane
0.50 Not Detected 1.3 Not DetectedVinyl Chloride
2.0 Not Detected 5.3 Not DetectedChloroethane
2.0 Not Detected 3.8 Not DetectedEthanol
0.50 Not Detected 2.0 Not Detected1,1-Dichloroethene
5.0 Not Detected 17 Not DetectedMethylene Chloride
0.50 Not Detected 2.0 Not Detectedtrans-1,2-Dichloroethene
0.50 Not Detected 2.0 Not Detected1,1-Dichloroethane
0.50 Not Detected 2.0 Not Detectedcis-1,2-Dichloroethene
0.50 Not Detected 2.4 Not DetectedChloroform
0.50 Not Detected 2.7 Not Detected1,1,1-Trichloroethane
0.50 Not Detected 3.1 Not DetectedCarbon Tetrachloride
0.50 Not Detected 2.7 Not DetectedTrichloroethene
0.50 Not Detected 3.4 Not DetectedTetrachloroethene
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
99 70-130Toluene-d8
103 70-1301,2-Dichloroethane-d4
102 70-1304-Bromofluorobenzene
Page 10 of 17
Client Sample ID: Lab Blank
Lab ID#: 1208404A-06B
EPA METHOD TO-15 GC/MS FULL SCAN
2082405File Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/24/12 07:20 PM
(ug/m3)(ug/m3)(ppbv)(ppbv)Compound
AmountRpt. LimitAmountRpt. Limit
5.0 Not Detected 10 Not DetectedChloromethane
0.50 Not Detected 1.3 Not DetectedVinyl Chloride
2.0 Not Detected 5.3 Not DetectedChloroethane
2.0 Not Detected 3.8 Not DetectedEthanol
0.50 Not Detected 2.0 Not Detected1,1-Dichloroethene
5.0 Not Detected 17 Not DetectedMethylene Chloride
0.50 Not Detected 2.0 Not Detectedtrans-1,2-Dichloroethene
0.50 Not Detected 2.0 Not Detected1,1-Dichloroethane
0.50 Not Detected 2.0 Not Detectedcis-1,2-Dichloroethene
0.50 Not Detected 2.4 Not DetectedChloroform
0.50 Not Detected 2.7 Not Detected1,1,1-Trichloroethane
0.50 Not Detected 3.1 Not DetectedCarbon Tetrachloride
0.50 Not Detected 2.7 Not DetectedTrichloroethene
0.50 Not Detected 3.4 Not DetectedTetrachloroethene
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
100 70-130Toluene-d8
99 70-1301,2-Dichloroethane-d4
96 70-1304-Bromofluorobenzene
Page 11 of 17
Client Sample ID: CCV
Lab ID#: 1208404A-07A
EPA METHOD TO-15 GC/MS FULL SCAN
2082319aFile Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/23/12 07:44 PM
%RecoveryCompound
92Chloromethane
84Vinyl Chloride
93Chloroethane
99Ethanol
821,1-Dichloroethene
85Methylene Chloride
86trans-1,2-Dichloroethene
841,1-Dichloroethane
87cis-1,2-Dichloroethene
85Chloroform
881,1,1-Trichloroethane
90Carbon Tetrachloride
87Trichloroethene
85Tetrachloroethene
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
103 70-130Toluene-d8
98 70-1301,2-Dichloroethane-d4
104 70-1304-Bromofluorobenzene
Page 12 of 17
Client Sample ID: CCV
Lab ID#: 1208404A-07B
EPA METHOD TO-15 GC/MS FULL SCAN
2082402File Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/24/12 05:20 PM
%RecoveryCompound
113Chloromethane
102Vinyl Chloride
112Chloroethane
133 QEthanol
991,1-Dichloroethene
103Methylene Chloride
102trans-1,2-Dichloroethene
981,1-Dichloroethane
102cis-1,2-Dichloroethene
99Chloroform
1011,1,1-Trichloroethane
104Carbon Tetrachloride
104Trichloroethene
101Tetrachloroethene
Q = Exceeds Quality Control limits.
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
101 70-130Toluene-d8
96 70-1301,2-Dichloroethane-d4
99 70-1304-Bromofluorobenzene
Page 13 of 17
Client Sample ID: LCS
Lab ID#: 1208404A-08A
EPA METHOD TO-15 GC/MS FULL SCAN
2082326File Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/24/12 09:56 AM
%RecoveryCompound
112Chloromethane
100Vinyl Chloride
106Chloroethane
121Ethanol
1001,1-Dichloroethene
96Methylene Chloride
109trans-1,2-Dichloroethene
961,1-Dichloroethane
98cis-1,2-Dichloroethene
97Chloroform
1001,1,1-Trichloroethane
103Carbon Tetrachloride
101Trichloroethene
96Tetrachloroethene
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
100 70-130Toluene-d8
98 70-1301,2-Dichloroethane-d4
103 70-1304-Bromofluorobenzene
Page 14 of 17
Client Sample ID: LCSD
Lab ID#: 1208404A-08AA
EPA METHOD TO-15 GC/MS FULL SCAN
2082327File Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/24/12 10:26 AM
%RecoveryCompound
105Chloromethane
94Vinyl Chloride
104Chloroethane
119Ethanol
1011,1-Dichloroethene
94Methylene Chloride
109trans-1,2-Dichloroethene
951,1-Dichloroethane
99cis-1,2-Dichloroethene
96Chloroform
981,1,1-Trichloroethane
101Carbon Tetrachloride
100Trichloroethene
96Tetrachloroethene
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
100 70-130Toluene-d8
96 70-1301,2-Dichloroethane-d4
104 70-1304-Bromofluorobenzene
Page 15 of 17
Client Sample ID: LCS
Lab ID#: 1208404A-08B
EPA METHOD TO-15 GC/MS FULL SCAN
2082403File Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/24/12 06:03 PM
%RecoveryCompound
103Chloromethane
92Vinyl Chloride
99Chloroethane
101Ethanol
941,1-Dichloroethene
89Methylene Chloride
101trans-1,2-Dichloroethene
881,1-Dichloroethane
92cis-1,2-Dichloroethene
89Chloroform
901,1,1-Trichloroethane
93Carbon Tetrachloride
92Trichloroethene
89Tetrachloroethene
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
100 70-130Toluene-d8
94 70-1301,2-Dichloroethane-d4
102 70-1304-Bromofluorobenzene
Page 16 of 17
Client Sample ID: LCSD
Lab ID#: 1208404A-08BB
EPA METHOD TO-15 GC/MS FULL SCAN
2082404File Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/24/12 06:33 PM
%RecoveryCompound
96Chloromethane
88Vinyl Chloride
95Chloroethane
102Ethanol
931,1-Dichloroethene
89Methylene Chloride
98trans-1,2-Dichloroethene
871,1-Dichloroethane
92cis-1,2-Dichloroethene
88Chloroform
901,1,1-Trichloroethane
91Carbon Tetrachloride
92Trichloroethene
88Tetrachloroethene
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
101 70-130Toluene-d8
96 70-1301,2-Dichloroethane-d4
103 70-1304-Bromofluorobenzene
Page 17 of 17
8/30/2012
Mr. Anthony Kellogg
AMEC Environment & Infrastructure
4021 Stirrup Creek Drive
Suite 100
Durham NC 27703
Project Name: GE-CHARLOTTE
Project #: GE-CHARLOTTE
Dear Mr. Anthony Kellogg
The following report includes the data for the above referenced project for sample(s)
received on 8/17/2012 at Air Toxics Ltd.
The data and associated QC analyzed by Modified ASTM D-1946 are compliant with
the project requirements or laboratory criteria with the exception of the deviations
noted in the attached case narrative.
Thank you for choosing Air Toxics Ltd. for your air analysis needs. Air Toxics Ltd. is
committed to providing accurate data of the highest quality. Please feel free to contact
the Project Manager: Ausha Scott at 916-985-1000 if you have any questions regarding
the data in this report.
Regards,
Ausha Scott
Project Manager
Workorder #: 1208404B
Page 1 of 9
Mr. Anthony Kellogg
AMEC Environment & Infrastructure
4021 Stirrup Creek Drive
Suite 100
Durham, NC 27703
WORK ORDER #:1208404B
CLIENT:BILL TO:
PHONE:
Accounts Payable-Durham
AMEC Environment & Infrastructure
4021 Stirrup Creek Drive
Suite 100
Durham, NC 27703
919-381-9900
08/17/2012
DATE COMPLETED:08/30/2012
P.O. #C012500874
PROJECT #GE-CHARLOTTE GE-CHARLOTTE
Work Order Summary
FAX:
DATE RECEIVED:CONTACT:Ausha Scott
NAMEFRACTION #TEST VAC./PRES.
RECEIPT
PRESSURE
FINAL
01A SS-1 Modified ASTM D-1946 3.0 "Hg 5 psi
02A Lab Blank Modified ASTM D-1946 NA NA
03A LCS Modified ASTM D-1946 NA NA
03AA LCSD Modified ASTM D-1946 NA NA
CERTIFIED BY:
Technical Director
DATE:
Name of Accrediting Agency: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program)
Accreditation number: CA300005, Effective date: 10/18/2011, Expiration date: 10/17/2012.
180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA - 9563
(916) 985-1000 . (800) 985-5955 . FAX (916) 985-1020
08/30/12
Page 2 of 9
This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc.
Eurofins Air Toxics Ltd. certifies that the test results contained in this report meet all requirements of the NELAC standards
Certfication numbers: AZ Licensure AZ0775, CA NELAP - 12282CA, NY NELAP - 11291,
TX NELAP - T104704434-12-5, UT NELAP CA009332012-3, WA NELAP - C935
LABORATORY NARRATIVEModified ASTM D-1946AMEC Environment & InfrastructureWorkorder# 1208404B
One 1 Liter Summa Canister sample was received on August 17, 2012. The laboratory performed
analysis via Modified ASTM Method D-1946 for Helium in air using GC/TCD. The method involves
direct injection of 1.0 mL of sample.
Method modifications taken to run these samples are summarized in the table below. Specific project
requirements may over-ride the ATL modifications.
Requirement ATL ModificationsASTM D-1946
Calibration A single point
calibration is
performed using a
reference standard
closely matching the
composition of the
unknown.
A 3-point calibration curve is performed. Quantitation is
based on a daily calibration standard which may or may
not resemble the composition of the associated samples.
Reference Standard The composition of any
reference standard
must be known to
within 0.01 mol % for
any component.
The standards used by ATL are blended to a >/= 95%
accuracy.
Sample Injection Volume Components whose
concentrations are in
excess of 5 % should
not be analyzed by
using sample volumes
greater than 0.5 mL.
The sample container is connected directly to a fixed
volume sample loop of 1.0 mL on the GC. Linear range
is defined by the calibration curve. Bags are loaded by
vacuum.
Normalization Normalize the mole
percent values by
multiplying each value
by 100 and dividing by
the sum of the original
values. The sum of the
original values should
not differ from 100%
by more than 1.0%.
Results are not normalized. The sum of the reported
values can differ from 100% by as much as 15%, either
due to analytical variability or an unusual sample matrix.
Precision Precision requirements
established at each
concentration level.
Duplicates should agree within 25% RPD for detections
> 5 X's the RL.
Receiving Notes
There were no receiving discrepancies.
There were no analytical discrepancies.
Analytical Notes
Page 3 of 9
Seven qualifiers may have been used on the data analysis sheets and indicate as follows:
B - Compound present in laboratory blank greater than reporting limit.
J - Estimated value.
E - Exceeds instrument calibration range.
S - Saturated peak.
Q - Exceeds quality control limits.
U - Compound analyzed for but not detected above the detection limit.
M - Reported value may be biased due to apparent matrix interferences.
File extensions may have been used on the data analysis sheets and indicates
as follows:
a-File was requantified
b-File was quantified by a second column and detector
r1-File was requantified for the purpose of reissue
Definition of Data Qualifying Flags
Page 4 of 9
NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946
Summary of Detected Compounds
Client Sample ID: SS-1
Lab ID#: 1208404B-01A
No Detections Were Found.
Page 5 of 9
Client Sample ID: SS-1
Lab ID#: 1208404B-01A
NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946
9082940File Name:
Dil. Factor:2.00
Date of Collection: 8/15/12 11:46:00 AM
Date of Analysis: 8/30/12 07:33 AM
(%)(%)Compound
AmountRpt. Limit
0.10 Not DetectedHelium
Container Type: 1 Liter Summa Canister
Page 6 of 9
Client Sample ID: Lab Blank
Lab ID#: 1208404B-02A
NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946
9082926File Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/29/12 09:10 PM
(%)(%)Compound
AmountRpt. Limit
0.050 Not DetectedHelium
Container Type: NA - Not Applicable
Page 7 of 9
Client Sample ID: LCS
Lab ID#: 1208404B-03A
NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946
9082925File Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/29/12 09:02 PM
%RecoveryCompound
99Helium
Container Type: NA - Not Applicable
Page 8 of 9
Client Sample ID: LCSD
Lab ID#: 1208404B-03AA
NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946
9082941File Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 8/30/12 07:48 AM
%RecoveryCompound
100Helium
Container Type: NA - Not Applicable
Page 9 of 9
Results of Sub-slab Vapor Sampling
TFS Charlotte Branch
1906 Bancroft Street, Charlotte, North Carolina
APPENDIX C
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h
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