20051_Travis Knits_Sub Slab-Indoor Air Assmt_2015.12.16

Via Email
December 16, 2015
NC DEQ
610 East Center Avenue, Suite 301
Mooresville, NC 28115

Attn: Mr. George Adams
Subject: Sub-Slab/Indoor Air Assessment
Former Knitronics Facility
Cherryville, North Carolina
H&H Project No. MOH-001

Dear George:

1.0 Introduction

This revised Sub-Slab/Indoor Air Assessment report has been prepared by Hart & Hickman, P.C.
(H&H) on behalf of Mohican Mills, Inc. (Mohican) for the former Knitronics facility located at
1515 West Academy Street in Cherryville, North Carolina (Figure 1). The subject property is
owned by Mohican and contains a 197,000 square feet warehouse building on approximately 12.13
acres. A separate wooded parcel, also owned by Mohican, contains 4.64 acres which abuts the
12.13 acre property on the east side. The warehouse building was built in 1971 for Knitronics
Knitting Mills, Inc. (“Knitronics”) and served as a former textile mill for Knitronics and others. It
is currently vacant in the eastern portion and used for warehouse space in the western portion.

As described below, Hart & Hickman, PC (H&H) has completed sub-slab vapor (SSV) and indoor
air assessment activities to evaluate vapor intrusion at the former Knitronics facility. The
assessment included in the collection and analysis of five SSV sampling points, six indoor air
samples, and one background air sample. The air sampling activities were completed in general
accordance with the North Carolina Department of Environmental Quality (DEQ) Vapor Intrusion
Guidance dated April 2014 (VI Guidance).
Mr. George Adams
December 16, 2015
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Based on the August 20, 2015 report, soil and groundwater samples were collected at the site in
July 2015 by the current tenant as part of its due diligence for a potential purchase to assess for
potential impacts in the eastern portion of the developed property. The results of the soil analyses
indicated that tetrachloroethene (PCE) was detected above the DEQ Soil-to-Groundwater
Maximum Soil Contaminant Concentration (MSCC). Additionally, cis,1,2-dichloroethene (1,2-
DCE), PCE, trichloroethene (TCE), chromium, and lead were detected in groundwater above DEQ
standards. PCE was detected in groundwater at concentrations up to 110,000 µg/l. These
chlorinated volatile organic compound (VOC) impacts were detected near the eastern portion of
the facility which is currently vacant. The metal concentrations detected in groundwater were low
concentrations and may be naturally occurring and/or an artifact of the sampling methods used.

2.0 Air Assessment Activities

2.1 Sub-Slab Sampling Methods

On November 5, 2015, H&H collected five SSV samples (SS-1 through SS-5) from the locations
shown on Figure 2. The SSV samples were collected from permanent Vapor Pin™ sample points
installed throughout the facility in areas of potential concern. For each SSV sample point, an initial
1 ½-inch diameter hole was drilled into the concrete slab to a depth of approximately 1 ¾ inches
using a hammer drill. Then, a drill guide was placed in the hole and a hammer drill, equipped with
a 5/8-inch diameter bit, was utilized to advance the borehole through the concrete slab and
approximately 6 inches into the underlying soil to form a void and penetrate any existing moisture
barrier plastic sheeting.

Following concrete borehole advancement, loose cuttings were removed using a bottle brush and
HEPA vacuum. Then, a Vapor Pin™ assembly (brass sampling point and silicone sleeve) was
placed and seated in the drilled hole by tapping the Vapor Pin™ assembly using an
installation/extraction tool and a “dead blow” hammer. The sampling points were installed as
flush mounted points and a protective cap was placed on the Vapor Pin™ sampling barb fitting.
Each SSV monitoring point was covered using a secure stainless steel cover.
Mr. George Adams
December 16, 2015
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Following installation and prior to collection of the vapor samples, a leak check of each SSV
monitoring point was conducted. The leak check was performed by first placing a shroud over
each sample point, filling the shroud with helium gas, and using a helium gas detector to verify
that the shroud was saturated with helium gas. Then, each sample point was purged using a syringe
and a three-way valve to collect purged vapor into a Tedlar® bag. The purged vapor was
subsequently analyzed using the helium gas detector to ensure that helium concentrations were
less than 20% of the helium concentrations in the shroud. Following successful leak checks, the
SSV samples were collected using one-liter stainless steel Summa canisters. The Summa canisters
were allowed to fill slowly using an airflow regulator over a period of approximately one hour at
each location. Vacuum readings were recorded prior to and following the sampling period to
ensure adequate sample volume collected.

H&H collected measurements of ambient temperature at the beginning, middle, and end of the
sample collection period in the general areas of the SSV samples. In addition, outside weather
was noted during the sampling period. Weather conditions consisted of cloudy skies and
temperatures in the 70s °F. Following sample collection, the Summa canisters were properly
labeled, placed into laboratory-supplied shipping containers, and shipped under standard chain-of-
custody protocol to Con-Test Analytical Laboratory in East Longmeadow, MA for analysis of the
select VOCs cis/trans-1,2-DCE, PCE, TCE, 1,1-DCE, vinyl chloride, and 1,2-dichloroethane (1,2-
DCA) by EPA Method TO-15. This compound list includes chlorinated VOCs and daughter
products that may be present based on the results of prior soil and groundwater sampling at the
site.

2.2 Indoor Air Sampling Methods

On November 5, 2015, H&H collected five indoor air samples (IA-1 through IA-5) in the site
building coincident with the SSV sampling points. In addition, one exterior background sample
(labeled OA-1) was collected south of the building, which was upwind of the facility during the
indoor air sampling event. An additional sample (IAS-6) was collected from an active office
located on the western end of the building on November 20, 2015. The samples were collected
Mr. George Adams
December 16, 2015
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under normal/current operating conditions. Approximately two employees work in the office and
warehouse space in the western portion of the building. The approximate locations of the indoor
air samples are depicted on Figure 2.

The indoor and background air samples were collected using laboratory-supplied, six-liter stainless
steel Summa canisters which were connected to in-line flow controllers with a built-in vacuum
gauge (also laboratory-supplied). The flow controller was set by the laboratory to restrict flow to
approximately 12.5 ml/min such that the samples were collected over an 8-hr period with the
exception of IAS-6. Due to the warehouse closing early when IAS-6 was collected, this sample
period was 6.5 hrs. A 3 ft long laboratory-supplied sampling cane was connected to the flow
controller so that the sample intake point was positioned approximately 5 ft above grade (typical
breathing zone height) when the sample canister was set on its base.

Prior to and after the indoor and background air samples were collected, vacuum in the canisters
was measured using a laboratory-supplied vacuum gauge and recorded by sampling personnel.
The starting and ending vacuums in each canister were recorded on the sample chain-of-custody.
At the end of the sample period, the in-door sir sample canister’s valve was closed to stop sample
collection. The sample canisters were then labeled and shipped under standard chain-of-custody
procedures to Con-Test Analytical Laboratory for analysis of the select VOCs cis/trans-1,2-DCE,
PCE, TCE, 1,1-DCE, vinyl chloride, and 1,2-DCA by EPA Method TO-15.

As part of the indoor air sampling activities, H&H conducted a survey of stored materials and
products in the warehouse building, and periodically noted outside weather conditions. Rolls of
synthetic fiber were stored in the central and western portions of the warehouse building. H&H
did not identify materials or products in the office building which would likely affect chlorinated
VOC indoor air sample results. During the November 5, 2015 indoor air sampling event, weather
conditions consisted of cloudy skies and temperatures in the 70s °F, and during the November 20,
2105 indoor air sampling event, weather conditions consisted of clear skies and temperatures in
the low 50s °F to high 60s °F. The warehouse portion of the building does not have an operable
Mr. George Adams
December 16, 2015
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heating, ventilating, and air conditioning (HVAC) system. Small floor/area fans are sometimes
used. Indoor air sampling forms are included in Appendix B.

2.3 Quality Control

For quality assurance purposes, one duplicate sample was collected from SSV sample point SS-1
and one duplicate sample was collected from an indoor air sampling location IA-2. The duplicate
samples were collected to allow determination of analytical repeatability. Additionally, H&H
submitted two trip blank samples (Trip Blank-1 and Trip Blank-2) for laboratory analysis on
November 5, 2015. The duplicate and trip blank samples were analyzed for the same select VOCs
as the SSV and indoor air samples.

3.0 Air Assessment Results

3.1 Sub-Slab Vapor Sampling Results

Laboratory analytical results indicated that two of the six SSV samples contained compound
concentrations above the NC DEQ Inactive Hazardous Sites Branch (IHSB) Non-Residential Sub-
Slab and Exterior Soil Gas Screening Levels (SGSLs). PCE was detected in vapor samples SS-1
and SS-2, and TCE was detected in SS-1 above the IHSB Non-Residential SGSLs. The maximum
SSV PCE concentration detected was 27,000,000 µg/m3 which exceeds the Non-Residential SGSL
of 3,500 µg/m3. No other VOCs exceeded Non-Residential SGSLs in these samples, and no VOCs
were detected above the Non-Residential SGSLs in SSV samples SS-3 through SS-5.

A summary of the SSV detections is provided in Table 1. The laboratory analytical report is
included in Appendix A.

Mr. George Adams
December 16, 2015
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3.2 Indoor Air and Outdoor Air Sampling Results

The indoor air analytical results indicated that PCE was detected in four (IA-1 through IA-4) of
six sample locations above the IHSB Non-Residential Indoor Air and Crawlspace Screening
Concentration (IASL) for PCE of 35.0 µg/m3. The maximum indoor air PCE concentration was
610 µg/m3. These samples were collected in the central and eastern portions of the building. No
other VOCs exceeded IASLs in these samples, and no VOCs were detected above the IASLs in
air samples IA-5 and IAS-6 which were collected in the western portion of the building and in the
active office.

Outdoor background air sample OA-1, collected in an upwind location, contained a low
concentration PCE. Considering the predominant wind direction the day of the sampling event, it
appears that this compound is present in ambient outdoor air near the facility.

A summary of the indoor and outdoor air detections is provided in Table 2 and Figure 2. The
laboratory analytical reports are included in Appendix A.
3.3 Calculated Cumulative Risks

The default DEQ IHSB IASLs are conservative and are based upon a Lifetime Incremental Cancer
Risk (LICR) of 1 x 10-5 for potential carcinogenic effects and a Hazard Quotient (HQ) of 0.2 for
potential non-carcinogenic effects. Vapor intrusion mitigation for occupied industrial/commercial
structures are not typically considered unless the LICR exceeds 1 x 10-4 for potential carcinogenic
effects and/or a HQ of 1 for potential non-carcinogenic effects.

Therefore, to further evaluate the risks posed by the detected indoor air compounds, H&H
calculated cumulative potential carcinogenic and non-carcinogenic risks for each of the sample
locations. The calculations are summarized in Tables 3 and 4. Please note that the assumptions
used in the calculations are based upon standard, conservative, default exposure scenarios which
include a person working at the site 250 days per year for 25 years and 8 hours per day.
Mr. George Adams
December 16, 2015
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As indicated in Table 3, none of the calculated LICRs for the November 2015 sampling event
exceeded a 1 x 10-4 risk level, and the LICRs were equal to or less than 1.34 x 10-5. As shown in
Table 4, the calculated non-carcinogenic HQs were greater than 1 in sample locations IA-1, IA-2,
and IA-3 and less than 1 in sample locations IA-4, IA-5, and IAS-6. Air samples IA-1, IA-2, and
IA-3 were collected in the central and eastern portions of the building, which is currently mostly
vacant. There is some material storage in the central portion of the warehouse near IA-3. The
areas near IA-1 and IA-2 are not occupied.

3.4 Quality Control Results

The quality control sample results indicate good quality datasets were collected. Duplicate and
trip blank sample results are summarized in Tables 1 and 2. The duplicate sample results were
similar to the original samples. No constituents were detected in the trip blank samples at
concentrations above the laboratory reporting limits.

4.0 Summary and Recommendations

H&H completed subslab vapor and indoor air assessment activities at the former Knitronics facility
located in Cherryville, North Carolina in November 2015. The assessment activities included the
collection and analysis of five SSV samples, six indoor air samples, and one background air
sample. The results of the assessment activities are summarized below.

• Two SSV samples on the eastern end of the building contained PCE concentrations above
the Non-Residential SGSL and one SSV sample on the eastern end of the building
contained TCE at a concentration above the Non-Residential SGSL. No other VOCs
exceeded SGSLs in these samples, and no VOCs were detected above the SGSLs in the
remaining samples.

Mr. George Adams
December 16, 2015
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• Four indoor air samples collected in the central and eastern portion of the building
contained PCE concentrations above the Non-Residential IASL. No other VOCs exceeded
IASLs in these samples, and no VOCs were detected above the IASLs in the remaining air
samples.

• Calculated cancer risks did not exceed a LICR of 1.34 x 10-5 in the indoor air samples, and
calculated non-carcinogenic HQs were greater than 1 in indoor air sample locations IA-1,
IA-2, and IA-3 and less than 1 in indoor air sample locations IA-4, IA-5, and IAS-6. Air
samples IA-1, IA-2, and IA-3 were collected in the central and eastern portions of the
building, which is currently mostly vacant. There is some synthetic fiber storage in the
central portion of the building near sample IA-3.

Based upon the results of the sub-slab vapor and indoor air assessment activities, additional
assessment appears to be warranted. Vapor mitigation should be evaluated for the building,
particularly if the eastern portion of the building will be utilized in the future.

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Table 2 (Page 1 of 1)Hart & Hickman, PC
Table 3
Calculated Additive Carcinogenic Risks
Indoor Air Sampling November 2015
Former Knitronics
Cherryville, North Carolina
H&H Job No. MOH-001
File: S:\AAA-Master Projects\Mohican Mills - MOH\MOH-001 Knitronics\Air Assessment\Data TablesRisk Calculator CAR
Date: 12/15/2015
Figure 3 (Page 1 of 1)
Hart & Hickman, PC
Carcinogenic Risks
Unit Location Compound Exposure Conc.IUR AT EF ED ET
ug/m3 (ug/m3)-1 days days/yr years hr/hr
IA-1 Tetrachloroethene 610 2.60E-07 25550.00 250.00 25.00 0.33 0.00001292
Trichloroethene 1.5 4.10E-06 25550.00 250.00 25.00 0.33 0.00000050
Total 1.34E-05
IA-2 Tetrachloroethene 310 2.60E-07 25550.00 250.00 25.00 0.33 0.00000657
Trichloroethene 0.89 4.10E-06 25550.00 250.00 25.00 0.33 0.00000030
Total 6.86E-06
IA-3 Tetrachloroethene 210 2.60E-07 25550.00 250.00 25.00 0.33 0.00000445
Trichloroethene 0.59 4.10E-06 25550.00 250.00 25.00 0.33 0.00000020
Total 4.64E-06
IA-4 Tetrachloroethene 71 2.60E-07 25550.00 250.00 25.00 0.33 0.00000150
Trichloroethene 0.42 4.10E-06 25550.00 250.00 25.00 0.33 0.00000014
Total 1.64E-06
IA-5 Tetrachloroethene 6.5 2.60E-07 25550.00 250.00 25.00 0.33 0.00000014
Trichloroethene 0.13 4.10E-06 25550.00 250.00 25.00 0.33 0.00000004
1,2-Dichloroethane 0.071 2.60E-05 25550.00 250.00 25.00 0.33 0.00000015
Total 3.31E-07
IAS-6 Tetrachloroethene 5.3 2.60E-07 25550.00 250.00 25.00 0.33 0.00000011
Trichloroethene 0.13 4.10E-06 25550.00 250.00 25.00 0.33 0.00000004
1,2-Dichloroethane 0.057 2.60E-05 25550.00 250.00 25.00 0.33 0.00000012
Total 2.76E-07
Notes:
IUR = Inhalation Unit Rate; AT = Averaging Time; EF = Exposure Frequency; ED = Exposure Duration; ET = Exposure Time
µg/m3 = microgram per cubic meter
IUR values taken from Regional Screening Level (RSL) Composite Worker Ambient Air Table dated June 2015
Risk
Former Finishing Room
Warehouse (east)
Inactive Office (east)
Warehouse (central)
Active Office (west)
Warehouse (West)
Table 4
Calculated Additive Non-Carcinogenic Risks
Indoor Air Sampling November 2015
Former Knitronics
Cherryville, North Carolina
H&H Job No. MOH-001
File: S:\AAA-Master Projects\Mohican Mills - MOH\MOH-001 Knitronics\Air Assessment\Data TablesRisk Calculator NONCAR
Date: 12/15/2015
Figure 4 (Page 1 of 1)
Hart & Hickman, PC
Non-Carcinogenic Risks
Unit Location Compound Exposure Conc.Rfc AT EF ED ET
ug/m3 mg/m3 days days/yr years hr/hr
IA-1 Tetrachloroethene 610 4.00E-02 9125.00 250.00 25.00 0.33 3.47825342
Trichloroethene 1.5 2.00E-03 9125.00 250.00 25.00 0.33 0.17106164
Total 3.65E+00
IA-2 Tetrachloroethene 310 4.00E-02 9125.00 250.00 25.00 0.33 1.76763699
Trichloroethene 0.89 2.00E-03 9125.00 250.00 25.00 0.33 0.10149658
Total 1.87E+00
IA-3 Tetrachloroethene 210 4.00E-02 9125.00 250.00 25.00 0.33 1.19743151
Trichloroethene 0.59 2.00E-03 9125.00 250.00 25.00 0.33 0.06728425
Total 1.26E+00
IA-4 Tetrachloroethene 71 4.00E-02 9125.00 250.00 25.00 0.33 0.40484589
Trichloroethene 0.42 2.00E-03 9125.00 250.00 25.00 0.33 0.04789726
Total 4.53E-01
IA-5 Tetrachloroethene 6.5 4.00E-02 9125.00 250.00 25.00 0.33 0.03706336
Trichloroethene 0.13 2.00E-03 9125.00 250.00 25.00 0.33 0.01482534
1,2-Dichloroethane 0.071 7.00E-03 9125.00 250.00 25.00 0.33 0.00231341
Total 5.42E-02
IAS-6 Tetrachloroethene 5.3 4.00E-02 9125.00 250.00 25.00 0.33 0.03022089
Trichloroethene 0.13 2.00E-03 9125.00 250.00 25.00 0.33 0.01482534
1,2-Dichloroethane 0.057 7.00E-03 9125.00 250.00 25.00 0.33 0.00185724
Total 4.69E-02
Notes:
Rfc = Reference Concentration; AT = Averaging Time; EF = Exposure Frequency; ED = Exposure Duration; ET = Exposure Time
mg/m3 = milligram per cubic meter
µg/m3 = microgram per cubic meter
Rfc values taken from Regional Screening Level (RSL) Composite Worker Ambient Air Table dated June 2015
Active Office (west)
Hazard Quotient
Former Finishing Room
Warehouse (east)
Inactive Office (east)
Warehouse (central)
Warehouse (West)
SITE
0 2000 4000
APPROXIMATE
SCALE IN FEET
N
U.S.G.S. QUADRANGLE MAP
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
WACO, NORTH CAROLINA, 1976
TITLE
PROJECT
SITE LOCATION MAP
FORMER KNITRONICS1515 WEST ACADEMY STREETCHERRYVILLE, NC
DATE:
JOB NO:
REVISION NO:
FIGURE:
12-1-15 0
1MOH-001
P
A
U
L

H

B
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GRO
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R
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A
D
WEST A
C
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D
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M
Y

S
T
R
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E
T
JOB NO. MOH-001
REVISION NO. 0DATE: 12-8-15
FIGURE NO. 2
2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology
LEGEND
SITE PROPERTY BOUNDARY
SUB-SLAB AND/OR INDOOR AIR SAMPLE
LOCATION
BACKGROUND AIR SAMPLE LOCATION
ASSUMED SHALLOW GROUNDWATERFLOW DIRECTION
FORMER KNITRONICS
1515 WEST ACADEMY STREET
CHERRYVILLE, NC
INDOOR/BACKGROUND AIR SAMPLE RESULTS
ACTIVE OFFICE
FENCE
CONCENTRATION (μg/m3)
SAMPLE ID
NOTES:
1. ONLY COMPOUNDS DETECTED IN AT LEAST ONE SAMPLE SHOWN.2. RED VALUE = CONCENTRATION EXCEEDS DEQ INDOOR AIR AND
CRAWLSPACE SCREENING CONCENTRATION.
IA-1
TETRACHLOROETHENE 610
COMPOUND
SS-1/IA-1
1,2-DICHLOROETHANE <0.14
cis-1,2-DICHLOROETHENE 0.83
TETRACHLOROETHENE 610
TRICHLOROETHENE 1.5
INACTIVE OFFICES
SS-2/IA-2
1,2-DICHLOROETHANE <0.14
cis-1,2-DICHLOROETHLENE 0.46
TETRACHLOROETHENE 310
TRICHLOROETHENE 0.89
SS-4/IA-4
1,2-DICHLOROETHANE <0.14
cis-1,2-DICHLOROETHENE 010 J
TETRACHLOROETHENE 71
TRICHLOROETHENE 0.42
SS-5/IA-5
1,2-DICHLOROETHANE 0.071 J
cis-1,2-DICHLOROETHENE <0.14
TETRACHLOROETHENE 6.5
TRICHLOROETHENE 0.13 J
IAS-6
1,2-DICHLOROETHANE 0.057 J
cis-1,2-DICHLOROETHENE <0.14
TETRACHLOROETHENE 5.3
TRICHLOROETHENE 0.13 J
OA-1
1,2-DICHLOROETHANE <0.14
cis-1,2-DICHLOROETHENE <0.14
TETRACHLOROETHENE 0.22 J
TRICHLOROETHENE <0.19
SS-3/IA-3
1,2-DICHLOROETHANE <0.14
cis-1,2-DICHLOROETHENE 0.26
TETRACHLOROETHENE 210
TRICHLOROETHENE 0.59
VACANT

S:\AAA-Master Projects\Mohican Mills - MOH\MOH-001 Knitronics\Air Assessment\SS_IA_Report.docx

Appendix A

Laboratory Analytical Data
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Page 28 of 28
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
November 30, 2015
Steve Libbey
Hart & Hickman - Charlotte, NC
2923 South Tryon Street, Suite 100
Charlotte, NC 28203
Project Location: Cherryville, NC
Client Job Number:
Project Number: MOH-001
Laboratory Work Order Number: 15K1004
Enclosed are results of analyses for samples received by the laboratory on November 20, 2015. If you have any questions
concerning this report, please feel free to contact me.
Sincerely,
Lisa A. Worthington
Project Manager
Page 1 of 12
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL SUMMARY
11/30/2015Hart & Hickman - Charlotte, NC
2923 South Tryon Street, Suite 100
Charlotte, NC 28203
ATTN: Steve Libbey
MOH-001
15K1004
The results of analyses performed on the following samples submitted to the CON-TEST Analytical Laboratory are found in this report.
PROJECT LOCATION:
PURCHASE ORDER NUMBER:
PROJECT NUMBER:
REPORT DATE:
WORK ORDER NUMBER:
FIELD SAMPLE #LAB ID:MATRIX TESTSAMPLE DESCRIPTION SUB LAB
Cherryville, NC
IAS-6 15K1004-01 Indoor air EPA TO-15
Page 2 of 12
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CASE NARRATIVE SUMMARY
All reported results are within defined laboratory quality control objectives unless listed below or otherwise qualified in this report.
The results of analyses reported only relate to samples submitted to the Con-Test Analytical Laboratory for testing.
I certify that the analyses listed above, unless specifically listed as subcontracted, if any, were performed under my direction according to the approved methodologies listed
in this document, and that based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the
best of my knowledge and belief, accurate and complete.
Johanna K. Harrington
Manager, Laboratory Reporting
Page 3 of 12
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Cherryville, NC
Date Received: 11/20/2015
Work Order: 15K1004Sample Description/Location:
Field Sample #: IAS-6
Sample ID: 15K1004-01
Sample Matrix: Indoor air
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -10
Receipt Vacuum(in Hg): -10.1
Sampled: 11/20/2015 15:15
Canister ID: 1138
Flow Controller ID: 3170
Sub Description/Location:
Canister Size: 6 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 8 hr
RLResults AnalystAnalyzedDilutionFlagRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL
1,2-Dichloroethane 0.014 0.035 11/21/15 11:57 TPHJ0.057 0.7020.140.0098
1,1-Dichloroethylene ND 0.035 11/21/15 11:57 TPHND0.7020.140.0086
cis-1,2-Dichloroethylene ND 0.035 11/21/15 11:57 TPHND0.7020.140.013
trans-1,2-Dichloroethylene ND 0.035 11/21/15 11:57 TPHND0.7020.140.0093
Tetrachloroethylene 0.79 0.035 11/21/15 11:57 TPH5.3 0.7020.240.010
Trichloroethylene 0.025 0.035 11/21/15 11:57 TPHJ0.13 0.7020.190.010
Vinyl Chloride ND 0.035 11/21/15 11:57 TPHND0.7020.0900.015
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)112 11/21/15 11:5770-130
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Sample Extraction Data
Prep Method: TO-15 Prep-EPA TO-15
Lab Number [Field ID]Batch Date
Pressure
Dilution
Pre
Dilution
Pre-Dil
Initial
mL
Pre-Dil
Final
mL
Default
Injection
mL
Actual
Injection
mL
15K1004-01 [IAS-6]B136451 1.5 1 N/A 1000 400 855 11/20/15
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ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B136451 - TO-15 Prep
Blank (B136451-BLK1)Prepared & Analyzed: 11/20/15
0.020ND1,2-Dichloroethane
0.020ND1,1-Dichloroethylene
0.020NDcis-1,2-Dichloroethylene
0.020NDtrans-1,2-Dichloroethylene
0.020 J0.019Tetrachloroethylene
0.020NDTrichloroethylene
0.020NDVinyl Chloride
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)1159.18
LCS (B136451-BS1)Prepared & Analyzed: 11/20/15
5.00 70-13094.84.741,2-Dichloroethane
5.00 70-13095.74.781,1-Dichloroethylene
5.00 70-13092.24.61cis-1,2-Dichloroethylene
5.00 70-13083.14.16trans-1,2-Dichloroethylene
5.00 70-1301175.84Tetrachloroethylene
5.00 70-1301015.03Trichloroethylene
5.00 70-1301185.88Vinyl Chloride
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)1229.78
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FLAG/QUALIFIER SUMMARY
*QC result is outside of established limits.
†Wide recovery limits established for difficult compound.
‡Wide RPD limits established for difficult compound.
#Data exceeded client recommended or regulatory level
Percent recoveries and relative percent differences (RPDs) are determined by the software using values in the
calculation which have not been rounded.
Detected but below the Reporting Limit (lowest calibration standard); therefore, result is an estimated
concentration (CLP J-Flag).
J
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39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CertificationsAnalyte
CERTIFICATIONS
Certified Analyses included in this Report
EPA TO-15 in Air
AIHA,FL,NJ,NY,VA,ME1,2-Dichloroethane
AIHA,FL,NJ,NY,VA,ME1,1-Dichloroethylene
AIHA,FL,NY,VA,MEcis-1,2-Dichloroethylene
AIHA,NJ,NY,VA,MEtrans-1,2-Dichloroethylene
AIHA,FL,NJ,NY,VA,METetrachloroethylene
AIHA,FL,NJ,NY,VA,METrichloroethylene
AIHA,FL,NJ,NY,VA,MEVinyl Chloride
The CON-TEST Environmental Laboratory operates under the following certifications and accreditations:
Code Description Number Expires
100033AIHA-LAP, LLCAIHA 02/1/2016
M-MA100Massachusetts DEPMA 06/30/2016
PH-0567Connecticut Department of Publilc HealthCT 09/30/2017
10899 NELAPNew York State Department of HealthNY 04/1/2016
2516 NELAPNew Hampshire Environmental LabNH-S 02/5/2016
LAO00112Rhode Island Department of HealthRI 12/30/2015
652North Carolina Div. of Water QualityNC 12/31/2015
MA007 NELAPNew Jersey DEPNJ 06/30/2016
E871027 NELAPFlorida Department of HealthFL 06/30/2016
LL015036Vermont Department of Health Lead LaboratoryVT 07/30/2016
C2065State of Washington Department of EcologyWA 02/23/2016
2011028State of MaineME 06/9/2017
460217Commonwealth of VirginiaVA 12/14/2015
2557 NELAPNew Hampshire Environmental LabNH-P 09/6/2016
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S:\AAA-Master Projects\Mohican Mills - MOH\MOH-001 Knitronics\Air Assessment\SS_IA_Report.docx
Appendix B Indoor Air Building Survey and Sampling Forms