HomeMy WebLinkAbout22055-18-060-IndoorAirAssessmentReport_04.17.2019Report of Additional Assessment
2151 Hawkins Street Property
ECS Project No. 49-7172-E
April 17, 2019
1
TABLE OF CONTENTS
1.0 PROJECT INFORMATION .................................................................................................................... 1
2.0 SCOPE OF SERVICES ............................................................................................................................ 5
3.0 RESULTS .............................................................................................................................................. 6
4.0 DISCUSSION ........................................................................................................................................ 7
5.0 CONCLUSIONS .................................................................................................................................... 8
6.0 RECOMMENDATIONS ......................................................................................................................... 8
7.0 QUALIFICATIONS OF REPORT ............................................................................................................. 8
FIGURES
Figure 1 Site Topographic Map
Figure 2 Site Location Map
Figure 3 Sub-Slab Soil Gas Sample Location Map
Figure 4 Indoor Air Sample Location Map
TABLES
Table 1 Summary of Sub-Slab Soil Gas Analytical Results
Table 2 Summary of Indoor Air Analytical Results
APPENDICES
Appendix A Weather Information for March 17, 2019
Appendix B Laboratory Analytical Data
Report of Additional Assessment
2151 Hawkins Street Property
ECS Project No. 49-7172-E
April 17, 2019
1
1.0 PROJECT INFORMATION
1.1 PROJECT INFORMATION
The subject property is located at 2151 Hawkins Street in Charlotte, Mecklenburg County, North Carolina
and identified by the Mecklenburg County GIS as Parcel Identification Number (PIN) 12103112. The site
currently consists of an approximate 28,329-square foot multi-tenant office building that was constructed
in 1957. Figure 1 is a site topographic map. Figure 2 is a site location map.
ECS conducted a Phase I Environmental Site Assessment (ESA) of the subject property which is
summarized in a Phase I Environmental Site Assessment Report dated June 28, 2018 (ECS Project Number
49-7172). Based on the historical research conducted during the Phase I ESA, ECS understands that the
subject property appears to have been developed in at least 1890 with railroad spurs and a ginnery. In
approximately 1896, the subject property appears to have been occupied with a portion of the Charlotte
Oil and Fertilizer Works facility and was occupied with an oil tank. In approximately 1900, an underground
oil tank to be used for a reservoir was located at the subject property, as well as a cooper shop. In
approximately 1905, a 150,000-gallon reservoir was located at the subject property. The reservoir was
increased to 650,000-gallons in approximately 1911. In 1911, the subject property was also occupied with
a mattress warehouse, transformer house, railroad spurs, and cotton shed. Between approximately 1929
and 1953, the reservoir was 600,000-gallons in size and the subject property appears to have been
associated with a portion of an oil company. In 1957, the subject property was occupied with an
approximate 28,329-square foot building that has been occupied with Tarcon Inc. Frt Forwarders,
Southern Flooring and Acoustical Co., Advanced Chemical Technology, Grice Showcase and Display
Manufacturing Co. Office (display fixture manufacturer), Design Tex Fabrics Inc., Global Networkers 2 S,
Shook Terry, Technic One 1 5S, and Whelchel and Assoc. Inc. 2O., Home Instead Senior Care, Mincey
Mountain Holdings LLC, SportsOneSource LLC, McCracken and Lopez PA, Nediri LLC, New Life Building
Supplies, SKNC LLC, and South End Ventures.
The following recognized environmental conditions (RECs) were noted in the Phase I ESA:
ECS considers the former underground oil tank reservoir, ranging between 150,000-gallons to
650,000-gallons, as well as the historical use of the property associated with the former oil and
fertilizer facility to be a REC of the subject property.
South Boulevard Property, 2000 South Boulevard - Located on the southeast adjacent property.
According to a Post-Closure Groundwater Quality Monitoring Plan dated May 2003 by AEI,
measured groundwater flow at this facility is east, north, and west. According to the figures in
the plan, several monitoring wells were installed at this facility and in the vicinity of this facility.
Monitoring wells ROW3/3A were installed by the NCDOT Right of Way on the northern boundary
of the subject property. According to the groundwater results, detections were detected above
the North Carolina 2L groundwater quality standards (NC2LGWQS) including tetrachloroethene
(also known as perchloroethene or PCE). PCE was detected at a concentration of 8.4 micrograms
per liter (µg/L). In addition, several monitoring wells to the south had detections above their
respective NC2LGWQS, with measured groundwater flow towards the subject property.
Report of Additional Assessment
2151 Hawkins Street Property
ECS Project No. 49-7172-E
April 17, 2019
2
According to a Brownfields Program Environmental Management Plan dated November 11, 2016,
trichloroethene (TCE) was detected in a temporary monitoring well located approximately 70 feet
southwest from the subject property at concentrations above its NC2LGWQS.
According to the online NCDEQ Brownfields Map, the status of this brownfield agreement is listed
as recorded. According to the database, there is a vapor intrusion requirement zone for this
property. Based on the documented contamination at this facility, measured groundwater flow
direction, and 2003 groundwater sample result near the right-of-way at the subject property, ECS
considers this listing to be a REC for the subject property.
Virginia Carolina Chemical (VCC) Charlotte, 349 Tremont Avenue - Formerly located on the
northwest adjacent property. This facility is listed on the SEMS database. According to a Removal
Site Evaluation Report dated July 2010 and completed by Arcadis, the Virginia Carolina Chemical
Company purchased this facility from the Charlotte Oil and Fertilizer Company in 1901. This facility
began fertilizer manufacturing prior and 1890 until approximately the 1930s. This facility
reportedly had an acid chamber that burned down in 1934. Sulfur burners were reportedly
present at this facility in the 1890s to early 1900s. Structures associated with this facility included
fertilizer buildings (mixing and storage), an acid chamber, associated burners, dry mixing plant, a
supply house, a wash house, railroad sidings, a fertilizer factory, a fertilizer warehouse, a bag
house, a 50,000-gallon water tower, and offices. According to the figures in the report, railroad
sidings were located approximately 100 feet northwest from the subject property and a wash
house was located approximately 450 feet northwest from the subject property.
According to a Site Delineation Report and Removal Action Work Plan dated December 2012 and
completed by Arcadis, several groundwater and soil samples were collected at this facility. Soil
samples were collected nearest to the site, on the northwest adjacent parcel (parcel number
12103212) that revealed arsenic levels exceeding the screening level. Monitoring wells were
installed on the northwestern portion of this facility with measured groundwater flow direction
to the northeast. The monitoring wells are located at least 540 feet northwest. Groundwater
sampling reveals detections of lead and arsenic above their respective NC2LGWWS. Groundwater
was not collected on the northwest adjacent parcel (parcel 12103212).
A Removal Action Completion Report dated May 2014 and completed by Arcadis, indicates a plan
for the implementation of institutional controls at this facility. Arcadis indicated that a recordable
survey plat would be prepared that prohibited the disturbance of soils and restricts the use of
groundwater in specific areas including the northwest adjacent parcel (12103212).
According to the historical Sanborn Map review, it appears the subject property was associated
with the former fertilizer and oil company. Based on the lack of groundwater sampling near the
subject property, as well as the proposed land-use restrictions for the northwest adjacent parcel,
ECS considers this facility to be a REC for the subject property.
Report of Additional Assessment
2151 Hawkins Street Property
ECS Project No. 49-7172-E
April 17, 2019
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C & P Properties, 2161 Hawkins Avenue - Located on the southwest adjoining property and
topographically crossgradient from the subject property. According to an Initial Abatement Action
and Phase I LSA Report completed by Hart and Hickman (H&H) and dated August 21, 2008, this
facility had two 500-gallon new/used oil underground storage tanks (USTs), two 10,000-gallon
diesel USTs, and two 7,500-gallon gasoline USTs. The USTs were reportedly removed in 1988.
Several monitoring wells were installed at this facility. Groundwater results revealed
concentrations of volatile organic compounds (VOCs) above their respective NC2LGWQS.
According to an October 7, 2008 letter from NCDEQ, this facility received a letter of no further
action with a notice of residual petroleum. Based on the documented groundwater concentration
and distance from the subject property, ECS considers this facility to be a REC for the subject
property.
In August 2018, ECS performed additional intrusive environmental assessment activities at the subject
property which included the advancement and sampling of six Geoprobe® soil borings, the collection of
six groundwater samples from Geoprobe® groundwater sampling points. The results of the August 2018
assessment activities are summarized in a Report of Environmental Assessment dated August 23, 2018.
(ECS Project Number 49-7172-A).
During the August 2018, assessment activities, total petroleum hydrocarbons (TPH) as gasoline range
organics (GRO) and diesel range organics (DRO) were detected in soil samples from soil boring SB-5. TPH-
DRO was detected in soil samples from SB-1, SB-3, SB-4, SB-5, and SB-6. Neither TPH-GRO nor TPH-DRO
was detected in samples from soil boring SB-2. The detected concentrations of TPH-GRO and TPH-FRO
were at concentrations above laboratory detection limits but below NCDEQ action levels. TPH as either
GRO or DRO was not detected in samples from the remaining soil boring (SB-2). Neither nitrates nor
nitrites were detected in samples from the six borings.
During the August 2018, assessment activities, several VOCs were detected in four of the six groundwater
sampling points. Laboratory analysis of groundwater sample GW-4 detected TCE at a concentration of 88
ug/L, which is above its NC2LGWQS of 3 ug/L, and the NCDEQ Residential and Industrial Vapor Intrusion
Screening Levels (VISLs) of 1 ug/L and 4.4 ug/L, respectively. Additionally, PCE and 1,2-dichloroethane
(DCA) were detected at concentrations above their respective NC2LGWQS but below their respective
NCDEQ VISLs.
Several other chlorinated compounds including 1,1-DCA, 1,1-dichloroethylene (DCE), cis-1,2-DCE, and
trans-1,2-DCE were detected at concentrations above the laboratory reporting limits but below their
respective NC2LGWQS. Acetone, a common laboratory contaminant, was detected at a concentration of
16 ug/L, which is below the NC2LGWQS of 6,000 ug/L.
Laboratory analysis of groundwater sample GW-2 detected PCE at a concentration of 2.2 ug/L, which is
above the NC2LGWQS of 0.7 ug/L, but below the NCDEQ Residential VISL of 12 ug/L. Additionally, TCE
was detected at a concentration of 0.71 ug/L, which is below the NC2LGWQS of 3 ug/L.
Laboratory analysis of groundwater sample GW-1 detected acetone and cis-1,2-DCE at concentrations
below their respective NC2LGWQS.
Report of Additional Assessment
2151 Hawkins Street Property
ECS Project No. 49-7172-E
April 17, 2019
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Laboratory analysis of groundwater sample GW-3 detected TCE at concentrations of 0.56 ug/L, which is
below the NC2LGWQ of 3 ug/L.
Laboratory analysis of groundwater sample GW-6 did not detect targeted compounds at concentrations
above the laboratory reporting limits.
Semi-volatile organic compounds (SVOCs) were not detected at concentrations above the laboratory
reporting limits in the groundwater samples collected.
Ammonia was detected in groundwater samples GW-1 and GW-5 at concentrations of 310 ug/L and 110
ug/L, respectively, which is below the NC2LGWQS of 1,500 ug/L. Ammonia was not detected at
concentrations above the laboratory reporting limits in the remaining groundwater samples collected.
The June 28, 2018 Phase I Environmental Site Assessment Report and the August 23, 2018 Report of
Environmental Assessment were provided to the NCBP. On November 7, 2018, personnel from the NCBP,
ECS, and 2151 Hawkins, LLC met on site to discuss possible data gaps in previous environmental
assessment activities. During the November 7, 2018, meeting NCBP indicated that the following data gaps
exist:
There is insufficient data on groundwater chemistry with respect to Resource Conservation and
Recovery Act (RCRA) metals, nitrate, and ammonia.
There is insufficient data regarding the groundwater flow directions across the subject property.
There is insufficient data with respect to the possible presence of VOCS, SVOCs, RCRA metals,
nitrate, and ammonia in shallow unsaturated soil at the subject property.
There is insufficient data with respect to the background concentrations of RCRA Metals in
shallow unsaturated soils soil at or near the subject property.
There is insufficient data with respect to the possible presence of polychlorinated biphenyls
(PCBs) in shallow unsaturated soil at the subject property.
There is insufficient data regarding the potential for vapor intrusion into structures which may be
constructed on the subject property.
There is insufficient data with respect to potential receptors and pathways near the subject
property.
On November 14, 2018, the NCBP forwarded a letter to 2151 Hawkins, LLC in which it requests additional
assessment activities to address the aforementioned data gaps. In the letter, the NCBP also requested
that soil and groundwater samples be analyzed for VOCs and SVOCs and groundwater samples be
analyzed for nitrate and ammonia presumably to confirm the results reported in the August 23, 2018
Report of Environmental Assessment. On December 19, 2018, ECS submitted a work plan to NCBP to
address its November 14, 2018 request for additional assessment. On December 20, 2018, NCBP provided
comments regarding the work plan. ECS submitted a revised work plan on December 28, 2019 which was
approved by NCBP on December 31, 2018.
ECS implemented the revised work plan dated December 28, 2018. Field work was performed in January
and February 2019 and is summarized in a report titled Report of Environmental Assessment dated
February 27, 2019. During the assessment samples of soil, groundwater, and sub-slab soil gas were
Report of Additional Assessment
2151 Hawkins Street Property
ECS Project No. 49-7172-E
April 17, 2019
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collected and analyzed. Several metals were detected in soil samples at concentrations above preliminary
soil remediation goals (PSRGs). Several VOCs were detected in groundwater samples at concentrations
above NC2LGWQS and TCE was detected at a concentration (56.2 µg/L) above non–residential vapor
intrusion screening levels (VISLs) (4.4 µg/L) in samples collected from one monitoring well (MW-3).
Several VOCs were detected in sub-slab soil gas samples and TCE was detected at a concentration (10,600
micrograms per cubic meter [µg/m3]) above its associated non-residential VISL (180 µg/m3) in a sample
collected from one sub-slab soil gas sampling point (SS-3). Information regarding the detections of VOCs
in soil, groundwater and sub-slab soil gas was provided to NCBP as the project progressed.
After receiving the Report of Environmental Assessment dated February 27, 2019, the NCBP requested
that additional assessment activities be performed. On March 6, 2019, ECS submitted a work plan for
indoor air sampling and additional sub-slab soil gas sampling. On March 7, 2019, the NCBP approved the
work plan.
2.0 SCOPE OF SERVICES
The environmental assessment consisted of collecting seven indoor air samples and one sub-slab gas
samples. Sampling activities were conducted on March 16, 2019.
2.1 Soil Gas/Indoor Air Sampling Activities
One sub-slab soil gas sample (SS-3R) and seven indoor air samples (IA-1 through IA-7) were collected at
the subject site. The sub-slab soil gas sample was collected at sample point SS-3 which had been installed
on February 9, 2019 along with three other sample points. The sub-slab soil gas sample points were
completed as flush-to-grade VaporPins® with stainless steel hose barbs set in a recessed platform with
the concrete slab. The sub-slab soil gas sample locations are shown on Figure 3. The indoor air samples
were collected at various locations throughout the building. The indoor air sample locations are shown
on Figure 4.
A sample train consisting of non-reactive tubing and micro-valves was connected to the VaporPin® at
sample point SS-3 and to a 1-liter Summa canister. A shut-in test was performed to confirm that leaks
were not present in the sampling train. A micro-valve at the connection between the sampling train and
the VaporPin® was closed and a vacuum was applied to the sampling train using a disposable syringe. The
vacuum gauge on the Summa canister was monitored for declining vacuum indicative of a leak. If a leak
was indicated, ECS took steps to eliminate the leak and repeated the test until no leaks were indicated.
A helium shroud leak test was performed at the SS-3 sample location as a quality assurance control
measure to confirm the integrity of the probe seal during the previous sampling event performed on
February 14, 2019. The leak test for sample point SS-3 was reported in the February 27, 2019 Report of
Environmental Assessment and results indicated that test parameters were within acceptable ranges.
After the leak test was completed, a vacuum syringe was used to remove three volumes of air from the
sample tubing prior to collection of the soil gas sample.
Report of Additional Assessment
2151 Hawkins Street Property
ECS Project No. 49-7172-E
April 17, 2019
6
Following successful shut-in tests, ECS collected a soil gas sample from sample point SS-3. ECS designated
this sample SS-3R. ECS utilized a 1-liter Summa canister from Pace. The canister was pre-cleaned and pre-
evacuated so that it was under negative pressure (i.e., under vacuum). The initial vacuum on the canister
was approximately 30 in-Hg. The canister was batch certified by the laboratory. The Summa canister was
outfitted with a flow regulator set to 200 milliliters per minute and a vacuum gauge. To collect the sample,
ECS opened the valve on the Summa canister and soil gas flowed into the canister. ECS noted the time the
valve was opened and the initial vacuum. When the vacuum decreased to approximately 5 in-Hg, ECS
shut the valve and recorded the time and final vacuum.
ECS noted that the barometric pressure rose during the time when sampling was conducted between
1615 and 1708 on March 16, 2019. ECS noted at 1615 and 1708 on this date that the barometric pressure
was 29.98 and 30.01 inches of mercury (in-Hg), respectively. Winds were reported to be 10 miles per hour
(mph) at 1615 and 12 mph at 1708. Temperature was reported to be 49 and 48 degrees Fahrenheit at
1615 and 1708, respectively. Light rain and fog was reported at both 1615 and 1708 on this date. A
printout from the webpage https://www.timeanddate.com/weather/usa/charlotte/historic showing
weather observations on March 16, 2019 is included as Appendix A.
The indoor air samples were collected, from a height of approximately 3.5 to 4.5 feet from the floor
surface, using a 6-Liter Summa canister with a regulator preset to a flow rate of 0.0125 L/min for each
canister. The vacuum was measured and recorded at the beginning and the end of the approximate 8-
hour sampling cycle at each location.
Following sample collection, the canisters were labeled and shipped to Pace Analytical Laboratory in
Huntersville, North Carolina to be analyzed for VOCs using EPA Method TO-15. ECS maintained chain-of-
custody (COC) procedures throughout the sample collection and transportation process.
3.0 RESULTS
A summary of the laboratory analytical results for the soil gas and indoor air samples is provided on Table
1 and 2, respectively. Table 1 also shows the analytical results for the previous soil gas sample collected
at SS-3 on February 14, 2019. Laboratory data sheets are included in Appendix B.
Laboratory results for sub-slab soil gas sample SS-3R indicate detections of several VOCs above their
respective method detection limits. Of these detections, the concentrations of TCE (47,600 ug/m3)
exceeded both the residential and non-residential sub-slab soil gas VISLs (14 and 180 ug/m3, respectively).
The concentrations of PCE (681 ug/m3) exceeded the residential sub-slab soil gas VISL (280 ug/m3). The
concentrations of none of the other detected VOCs associated with sample SS-3R exceeded their
respective residential or non-residential sub-slab soil gas VISLs.
Laboratory analysis of the indoor air samples IA-1 and IA-2 detected several VOCS at concentrations below
their respective residential and non-residential VISL.
Laboratory analysis of the indoor air samples IA-3, IA-4, IA-5, IA-6 and IA-7 detected 1,2-dichloroethane
(also known as ethylene dichloride or EDC) at concentrations of 2.4, 1.9, 3.8, 0.60, and 1.8 µg/m3 which is
Report of Additional Assessment
2151 Hawkins Street Property
ECS Project No. 49-7172-E
April 17, 2019
7
above the non-residential VISL of 0.47 µg/m3 for this compound. Laboratory analysis of the indoor air
sample IA-6 detected naphthalene at a concentration of 10.2 µg/m3 which is above the Non-Residential
VISL of 0.36 µg/m3 for this compound. Several VOCS were detected in these samples at concentrations
below their respective Residential VISLs.
4.0 DISCUSSION
The concentrations of PCE associated with sub-slab soil gas sample point SS-3 increased from 114 to 681
µg/m3 between February 14, 2019 and March 17, 2019. The concentrations of TCE associated with sub-
slab soil gas sample point SS-3 increased from 10,600 to 47,600 µg/m3 between February 14, 2019 and
March 17, 2019. The increase indicates that subsurface conditions are dynamic.
The compound, EDC, was not detected in sub-slab soil gas samples collected on February 14, 2019 or on
March 17, 2019. This compound was detected in several indoor air samples at concentrations above
residential and non-residential VISLs. The absence of this compound in sub-slab soil gas samples suggests
that the source of this compound in indoor air is not sub-slab soil gas.
Naphthalene was detected in sub-slab soil gas samples collected on February 14, 2019 or on March 17,
2019 at concentrations below both residential and non-residential VISLs. Naphthalene was detected in
indoor air sample IA-6 at a concentration of 10.2 µg/m3 which is the above the residential and non-
residential VISLs for indoor air (0.083 and 0.36 10.2 µg/m3, respectively). The fact that the naphthalene
concentrations in sub-slab soil gas samples did not exceed VISLs suggests that the source of this compound
in indoor air is not sub-slab soil gas.
PCE was detected in the sub-slab soil gas sample from sample point SS-3 collected on March 17, 2019 at
a concentration of 681 µg/m3 and above the residential VISL. PCE was detected in two of the seven indoor
air samples (IA-6 and IA-7) collected on March 17, 2019 at estimated concentrations of 0.71 and 0.76
µg/m3, respectively. The concentration of PCE associated with indoor air is more than two orders of
magnitude less than PCE concentrations associated with sub-slab soil gas and is below indoor air VISLs.
This data suggests that vapor intrusion of PCE from sub-slab soil gas into indoor air at levels is not occurring
at rates that pose health risks to persons working in the indoor air space based upon the health-based
VISLs provided by NCDEQ.
TCE was detected in the sub-slab soil gas samples from sample point SS-3 collected on February 14, 2019
and March 17, 2019 at concentrations of 10,600 and 47,600 µg/m3, respectively, and above the residential
and non-residential VISLs. TCE was detected in three of the seven indoor air samples (IA-5, IA-6 and IA-7)
collected on March 17, 2019 at estimated concentrations of 0.57, 0.85, and 0.79 µg/m3, respectively. The
concentration of TCE associated with indoor air is more than three orders of magnitude less than TCE
concentrations associated with sub-slab soil gas and below indoor air VISLs. This data suggests that vapor
intrusion of TCE from sub-slab soil gas into indoor air at levels is not occurring at rates that pose health
risks to persons working in the indoor air space based upon the health-based VISLs provided by NCDEQ.
Report of Additional Assessment
2151 Hawkins Street Property
ECS Project No. 49-7172-E
April 17, 2019
8
5.0 CONCLUSIONS
Based on the results of the environmental assessment, ECS concludes the following:
The detection of EDC in indoor air samples collected on March 17, 2019 is not related to vapor
intrusion from sub-slab soil gas.
The detection of naphthalene in indoor air samples collected on March 17, 2019 is most likely not
related to vapor intrusion from sub-slab soil gas.
The sub-slab soil gas and indoor air analytical data for samples collected on March 17, 2019
suggest that vapor intrusion of PCE and TCE was not posing a health risk for workers in the indoor
air space on that date based upon the health-based VISLs provided by NCDEQ.
Conditions are dynamic and vapor intrusion issues may occur should the concentrations of VOCs
in soil gas increase, the site be disrupted through construction activities, and/or the occurrence
of seasonal variations in weather (including changes in temperature, barometric pressure,
prevailing winds).
6.0 RECOMMENDATIONS
Based on the results of the environmental assessment, ECS recommends the following:
ECS recommends that a vapor mitigation system be installed for the structure proposed to be
constructed on the subject property.
ECS recommends that no further environmental assessment be performed on the subject
property until after the proposed structure is under construction and then the recommended
vapor mitigation system should be tested for efficiency.
Existing monitoring wells should be abandoned in accordance with North Carolina well
construction standards.
Investigation derived wastes (IDW) which consist of drummed soil cuttings and
development/purge groundwater should be disposed in accordance with North Carolina
regulations and NCBP should be provided with documentation of the disposal.
A Brownfields environmental management plan (EMP) should be prepared and submitted to
NCBP for approval.
7.0 QUALIFICATIONS OF REPORT
The activities and evaluative approaches used in this assessment are consistent with those normally
employed in environmental assessment projects of this type. Our evaluation of site conditions has been
based on our understanding of the site project information and the data obtained during our field
activities. This report was prepared for the express use of Portman Holdings and 2151 Hawkins, LLC. Use
of this report by other individuals or companies implies their acceptance of the General Conditions of
Service of the original contract.
FIGURES
SOURCE:USGS Topographic MapCharlotte East Quadrangle2016
SCALE:1-inch = 2,000 feet
1’2000’1000’
SITE
FIGURE 1
SITE TOPOGRAPHIC MAP
2151 Hawkins, LLC
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
ECS Project Number 49-7172-E
FIGURE 2SITE MAP
2151 Hawkins, LLC2151 Hawkins StreetCharlotte, Mecklenburg County, North Carolina
ECS Project Number 49-7172-E
SOURCE:
GOOGLE EARTH, DATED 2017
SCALE:
AS SHOWN
APPROXIMATE SITE BOUNDARY
LEGEND
FIGURE 3
SUB-SLAB SOIL GAS SAMPLE LOCATION MAP
2151 Hawkins, LLC
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
ECS Project Number 49-7172-E
SOURCE:
PORTMAN HOLDINGS, INC.
APPROXIMATE SCALE:
1 INCH = 80 FEET
SB-1/GW-1
GW-4
SS-1 SUB SLAB SOIL GAS SAMPLE LOCATION (APPROXIMATE)
LEGEND
FIGURE 4
INDOOR AIR SAMPLE LOCATION MAP
2151 Hawkins, LLC
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
ECS Project Number 49-7172-E
SOURCE:
PORTMAN HOLDINGS, INC.
APPROXIMATE SCALE:
1 INCH = 80 FEET
SB-1/GW-1
GW-4
INDOOR AIR SAMPLE LOCATION (APPROXIMATE)
LEGEND
IA-6
IA-4
IA-3
IA-2
IA-1
IA-5
IA-7
TABLES
2151 Hawkins Steet, LLC
Charlotte Oil & Fertilizer Works
2151 Hawkins Street, Charlotte, North Carolina
ECS Project No. 49:7172-E
Parameter
Sample ID SS-3 SS-3R
Sample Date 2/14/2019 3/17/2019
Acetone 61.7 52.7 2,700,000 220,000
Benzene 2.6 4.8 1,600 120
2-Butanone (MEK)54.6 8.6 440,000 35,000
Cyclohexane 1.2 J 2.2 J 530,000 42,000
Trichlorofluoromethane (F11)<0.84 1.4 J NS NS
Dichlorodifluoromethane (F12)1.8 J 2.2 8,800 700
1,1-Dichloroethane 33.3 3.0 7,700 580
n-Heptane <0.87 <1.7 35,000 2,800n-Hexane 2.1 NA 61,000 4,900
2-Hexanone 2.7 J 2.2 J 2,600 210
Methylene Chloride 12.6 26.6 53,000 4,200
Naphthalene 11.3 6.7 260 21
Propylene <0.33 <0.74 260,000 21,000
cis-1,2-Dichloroethene 30.2 59.6 NS NStrans-1,2-Dichloroethene 67.8 120 NS NS
Chloroform 23.8 53.3 530 41
1,1,1-Trichloroethane 19.5 33.8 440,000 35,000
1,2,4-Trimethylbenzene 2.7 2.6 5,300 420
1,3,5-Trimethylbenzene 0.95 J 2.1 J 5,300 420
Ethyl acetate 4.2 <1.5 6,100 490
Ethylbenzene 2.4 2.0 4,900 370
Toluene 52.1 27.0 440,000 35,000
Tetrachloroethene (PCE)114 681 3,500 280
Tetrahydrofuran 3.1 <1.3 180,000 14,000
Trichloroethene (TCE)10,600 47,600 180 14
Vinyl chloride <0.29 <0.55 2,800 56
m,p-Xylene 7.6 6.5 8,800 700
o-Xylene 2.6 <1.9 8,800 700
Styrene 1.8 J <1.8 J 88,000 7,000
Notes:
Results presented in micrograms per cubic meter (µg/m3)
NCDEQ-DWM = North Carolina Department of Environmental Quality-Division of Waste Management
NCDEQ-DWM Residential and Non-Residential Vapor Intrusion Screening Concentrations are from update of February 2018
VISL= Vapor Intrusion Screening Levels
NS = No Established Standard
Underline = Concentration Exceeds Residential VISL
BOLD = Concentration Exceeds Non-Residential VISL
Volatile Organic Compounds (VOCs) by EPA TO-15
TABLE 1: SUMMARY OF SUB-SLAB SOIL GAS ANALYTICAL RESULTS
ANALYTICAL RESULTS NCDEQ-DWM
Non-Residential
VISL (Exterior &
sub-slab)
NCDEQ-DWM
Residential VISL
(Exterior & sub-
slab)
2151 Hawkins Steet, LLC
Charlotte Oil & Fertilizer Works
2151 Hawkins Street, Charlotte, North Carolina
ECS Project No. 49:7172-D
Parameter
Sample ID IA-1 IA-2 IA-3 IA-4 IA-5 IA-6 IA-7
Sample Date
Acetone 290 7.7 19.5 21.3 53.2 34.9 24.1 27,000 2,200
Benzene 0.49 J 0.31 J <0.52 0.45 J 0.47 J 0.27 J 0.39 J 16 0.36
2-Butanone (MEK)1.2 J <4.8 0.81 J 1.3 J 0.87 J 0.96 J 1.4 J 4,400 1,000Cyclohexane <2.8 <2.8 <2.8 <2.8 <2.8 <2.8 <2.8 5,300 1,300
Trichlorofluoromethane (F11)1.3 J 1.7 J 1.7 J <1.8 1.8 J 1.6 J 1.6 J NS NSDichlorodifluoromethane (F12)2.4 2.6 2.9 2.7 2.6 2.8 2.8 88 21
1,2-Dichloroethane (EDC)<0.65 <0.66 2.4 1.9 3.8 0.60 J 1.8 0.47 0.11
n-Heptane <1.3 <1.3 <1.3 <1.3 <1.3 0.72 J <1.3 350 83
2-Hexanone <6.6 <6.7 <6.7 <6.6 <6.6 <6.7 <6.7 26 6.3
Methylene Chloride 3.9 J 3.4 J 3.5 J 3.9 J 7.9 3.7 J 4.5 J 530 100
Naphthalene <4.2 <4.3 <4.3 <4.2 <4.2 10.2 <4.3 0.36 0.083
Propylene <0.55 <0.56 <0.56 <0.55 <0.55 <0.56 <0.56 2,600 630
cis-1,2-Dichloroethene <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 NS NS
trans-1,2-Dichloroethene <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 NS NS
Chloroform <0.78 <0.80 <0.80 <0.78 <0.78 <0.80 <0.80 0.53 0.12
1,1,1-Trichloroethane <1.8 <1.8 <1.8 <1.8 <1.8 <1.8 <1.8 4,400 1,000
1,2,4-Trimethylbenzene <1.6 <1.6 <1.6 <1.6 1.0 J 14.5 <1.6 53 13
1,3,5-Trimethylbenzene <1.6 <1.6 <1.6 <1.6 <1.6 3.9 <1.6 53 13
Ethyl acetate 1.5 <1.2 <1.2 0.75 J 3.6 1.4 <1.2 61 15
Ethylbenzene <1.4 <1.4 1.2 J 0.82 J <1.4 1.4 J 1.2J 4.9 1.1
Toluene 1.5 1.4 3.2 2.0 3.1 2.9 2.2 4,400 1,000
Tetrachloroethene (PCE)<1.1 <1.1 <1.1 <1.1 <1.1 0.71 J 0.76 J 35 8.3
Tetrahydrofuran <0.95 <0.97 <0.97 <0.95 <0.95 <0.97 <0.97 1,800 420
Trichloroethene (TCE)<0.86 <0.88 <0.88 <0.86 0.57 J 0.85 J 0.79 J 1.8 0.42
Vinyl chloride <0.41 <0.42 <0.42 <0.41 <0.41 <0.42 <0.42 2.8 0
m,p-Xylene <2.8 <2.8 3.6 3.7 <2.8 5.4 4.0 88 21o-Xylene <1.4 <1.4 0.71 J 0.78 J <1.4 2.9 0.82 J 88 21
Styrene <1.4 <1.4 <1.4 <1.4 <1.4 <1.4 <1.4 880 210
Notes:
Results presented in micrograms per cubic meter (µg/m3)NCDEQ-DWM = North Carolina Department of Environmental Quality-Division of Waste Management
NCDEQ-DWM Residential and Non-Residential Vapor Intrusion Screening Concentrations are from update of February 2018VISL= Vapor Intrusion Screening Levels
IASL (A) = Indoor Air/Crawlspace Screening Level at target risk 1.0E -06NS = No Established Standard
Underline = Concentration Exceeds Residential VISL IASL (A)
BOLD = Concentration Exceeds Non-Residential VISL IASL (A)
Volatile Organic Compounds (VOCs) by EPA TO-15
2/14/2019
TABLE 2: SUMMARY OF INDOOR AIR ANALYTICAL RESULTS
ANALYTICAL RESULTS NCDEQ-DWM Residential VISL
IASL (A)
NCDEQ-DWM Non-Residential
VISL IASL (A)
APPENDIX A
APPENDIX B
#=CL#
March 25, 2019
LIMS USE: FR - JOE NESTOR
LIMS OBJECT ID: 92421695
92421695
Project:
Pace Project No.:
RE:
Joe Nestor
ECS Southeast
1812 Center Park Drive
Suite D
Charlotte, NC 28217
Hawkins
Dear Joe Nestor:
Enclosed are the analytical results for sample(s) received by the laboratory on March 18, 2019. The
results relate only to the samples included in this report. Results reported herein conform to the most
current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where
applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Taylor Ezell
taylor.ezell@pacelabs.com
Project Manager
(704)875-9092
Enclosures
REPORT OF LABORATORY ANALYSIS
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Pace Analytical Services, LLC
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Page 1 of 24
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92421695
Hawkins
Minnesota Certification IDs
1700 Elm Street SE, Minneapolis, MN 55414-2485
A2LA Certification #: 2926.01
Alabama Certification #: 40770
Alaska Contaminated Sites Certification #: 17-009
Alaska DW Certification #: MN00064
Arizona Certification #: AZ0014
Arkansas DW Certification #: MN00064
Arkansas WW Certification #: 88-0680
California Certification #: 2929
CNMI Saipan Certification #: MP0003
Colorado Certification #: MN00064
Connecticut Certification #: PH-0256
EPA Region 8+Wyoming DW Certification #: via MN 027-
053-137
Florida Certification #: E87605
Georgia Certification #: 959
Guam EPA Certification #: MN00064
Hawaii Certification #: MN00064
Idaho Certification #: MN00064
Illinois Certification #: 200011
Indiana Certification #: C-MN-01
Iowa Certification #: 368
Kansas Certification #: E-10167
Kentucky DW Certification #: 90062
Kentucky WW Certification #: 90062
Louisiana DEQ Certification #: 03086
Louisiana DW Certification #: MN00064
Maine Certification #: MN00064
Maryland Certification #: 322
Massachusetts Certification #: M-MN064
Michigan Certification #: 9909
Minnesota Certification #: 027-053-137
Minnesota Dept of Ag Certifcation #: via MN 027-053-137
Minnesota Petrofund Certification #: 1240
Mississippi Certification #: MN00064
Missouri Certification #: 10100
Montana Certification #: CERT0092
Nebraska Certification #: NE-OS-18-06
Nevada Certification #: MN00064
New Hampshire Certification #: 2081
New Jersey Certification #: MN002
New York Certification #: 11647
North Carolina DW Certification #: 27700
North Carolina WW Certification #: 530
North Dakota Certification #: R-036
Ohio DW Certification #: 41244
Ohio VAP Certification #: CL101
Oklahoma Certification #: 9507
Oregon Primary Certification #: MN300001
Oregon Secondary Certification #: MN200001
Pennsylvania Certification #: 68-00563
Puerto Rico Certification #: MN00064
South Carolina Certification #:74003001
Tennessee Certification #: TN02818
Texas Certification #: T104704192
Utah Certification #: MN00064
Virginia Certification #: 460163
Washington Certification #: C486
West Virginia DEP Certification #: 382
West Virginia DW Certification #: 9952 C
Wisconsin Certification #: 999407970
Wyoming UST Certification #: via A2LA 2926.01
REPORT OF LABORATORY ANALYSIS
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Page 2 of 24
#=SS#
SAMPLE SUMMARY
Pace Project No.:
Project:
92421695
Hawkins
Lab ID Sample ID Matrix Date Collected Date Received
92421695001 IA-1 Air 03/16/19 15:54 03/18/19 14:05
92421695002 IA-2 Air 03/16/19 15:55 03/18/19 14:05
92421695003 IA-3 Air 03/16/19 16:02 03/18/19 14:05
92421695004 IA-4 Air 03/16/19 16:05 03/18/19 14:05
92421695005 IA-5 Air 03/16/19 16:15 03/18/19 14:05
92421695006 IA-6 Air 03/16/19 16:20 03/18/19 14:05
92421695007 IA-7 Air 03/16/19 16:25 03/18/19 14:05
92421695008 SS-3R Air 03/16/19 16:35 03/18/19 14:05
REPORT OF LABORATORY ANALYSIS
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Page 3 of 24
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92421695
Hawkins
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92421695001 IA-1 TO-15 30 PASI-MNCK
92421695002 IA-2 TO-15 30 PASI-MNCK
92421695003 IA-3 TO-15 30 PASI-MNCK
92421695004 IA-4 TO-15 30 PASI-MNCK
92421695005 IA-5 TO-15 30 PASI-MNCK
92421695006 IA-6 TO-15 30 PASI-MNCK
92421695007 IA-7 TO-15 30 PASI-MNCK
92421695008 SS-3R TO-15 30 PASI-MAFV, NCK
REPORT OF LABORATORY ANALYSIS
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Page 4 of 24
#=HO#
SUMMARY OF DETECTION
Pace Project No.:
Project:
92421695
Hawkins
Parameters AnalyzedResult
Lab Sample ID
Report Limit QualifiersUnitsMethod
Client Sample ID
92421695001 IA-1
2-Butanone (MEK)1.2J ug/m3 03/23/19 22:254.7TO-15
Acetone 290 ug/m3 03/23/19 22:253.8TO-15
Benzene 0.49J ug/m3 03/23/19 22:250.51TO-15
Dichlorodifluoromethane 2.4 ug/m3 03/23/19 22:251.6TO-15
Ethyl acetate 1.5 ug/m3 03/23/19 22:251.2TO-15
Methylene Chloride 3.9J ug/m3 03/23/19 22:255.6TO-15
Toluene 1.5 ug/m3 03/23/19 22:251.2TO-15
Trichlorofluoromethane 1.3J ug/m3 03/23/19 22:251.8TO-15
92421695002 IA-2
Acetone 7.7 ug/m3 03/23/19 23:223.9TO-15
Benzene 0.31J ug/m3 03/23/19 23:220.52TO-15
Dichlorodifluoromethane 2.6 ug/m3 03/23/19 23:221.6TO-15
Methylene Chloride 3.4J ug/m3 03/23/19 23:225.7TO-15
Toluene 1.4 ug/m3 03/23/19 23:221.2TO-15
Trichlorofluoromethane 1.7J ug/m3 03/23/19 23:221.8TO-15
92421695003 IA-3
1,2-Dichloroethane 2.4 ug/m3 03/23/19 23:510.66TO-15
2-Butanone (MEK)0.81J ug/m3 03/23/19 23:514.8TO-15
Acetone 19.5 ug/m3 03/23/19 23:513.9TO-15
Dichlorodifluoromethane 2.9 ug/m3 03/23/19 23:511.6TO-15
Ethylbenzene 1.2J ug/m3 03/23/19 23:511.4TO-15
Methylene Chloride 3.5J ug/m3 03/23/19 23:515.7TO-15
Toluene 3.2 ug/m3 03/23/19 23:511.2TO-15
Trichlorofluoromethane 1.7J ug/m3 03/23/19 23:511.8TO-15
m&p-Xylene 3.6 ug/m3 03/23/19 23:512.8TO-15
o-Xylene 0.71J ug/m3 03/23/19 23:511.4TO-15
92421695004 IA-4
1,2-Dichloroethane 1.9 ug/m3 03/24/19 00:200.65TO-15
2-Butanone (MEK)1.3J ug/m3 03/24/19 00:204.7TO-15
Acetone 21.3 ug/m3 03/24/19 00:203.8TO-15
Benzene 0.45J ug/m3 03/24/19 00:200.51TO-15
Dichlorodifluoromethane 2.7 ug/m3 03/24/19 00:201.6TO-15
Ethyl acetate 0.75J ug/m3 03/24/19 00:201.2TO-15
Ethylbenzene 0.82J ug/m3 03/24/19 00:201.4TO-15
Methylene Chloride 3.9J ug/m3 03/24/19 00:205.6TO-15
Toluene 2.0 ug/m3 03/24/19 00:201.2TO-15
m&p-Xylene 3.7 ug/m3 03/24/19 00:202.8TO-15
o-Xylene 0.78J ug/m3 03/24/19 00:201.4TO-15
92421695005 IA-5
1,2,4-Trimethylbenzene 1.0J ug/m3 03/24/19 00:481.6TO-15
1,2-Dichloroethane 3.8 ug/m3 03/24/19 00:480.65TO-15
2-Butanone (MEK)0.87J ug/m3 03/24/19 00:484.7TO-15
Acetone 53.2 ug/m3 03/24/19 00:483.8TO-15
Benzene 0.47J ug/m3 03/24/19 00:480.51TO-15
Dichlorodifluoromethane 2.6 ug/m3 03/24/19 00:481.6TO-15
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
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9800 Kincey Ave. Suite 100
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(704)875-9092
Page 5 of 24
#=HO#
SUMMARY OF DETECTION
Pace Project No.:
Project:
92421695
Hawkins
Parameters AnalyzedResult
Lab Sample ID
Report Limit QualifiersUnitsMethod
Client Sample ID
92421695005 IA-5
Ethyl acetate 3.6 ug/m3 03/24/19 00:481.2TO-15
Methylene Chloride 7.9 ug/m3 03/24/19 00:485.6TO-15
Toluene 3.1 ug/m3 03/24/19 00:481.2TO-15
Trichloroethene 0.57J ug/m3 03/24/19 00:480.86TO-15
Trichlorofluoromethane 1.8J ug/m3 03/24/19 00:481.8TO-15
92421695006 IA-6
1,2,4-Trimethylbenzene 14.5 ug/m3 03/24/19 01:171.6TO-15
1,2-Dichloroethane 0.60J ug/m3 03/24/19 01:170.66TO-15
1,3,5-Trimethylbenzene 3.9 ug/m3 03/24/19 01:171.6TO-15
2-Butanone (MEK)0.96J ug/m3 03/24/19 01:174.8TO-15
Acetone 34.9 ug/m3 03/24/19 01:173.9TO-15
Benzene 0.27J ug/m3 03/24/19 01:170.52TO-15
Dichlorodifluoromethane 2.8 ug/m3 03/24/19 01:171.6TO-15
Ethyl acetate 1.4 ug/m3 03/24/19 01:171.2TO-15
Ethylbenzene 1.4J ug/m3 03/24/19 01:171.4TO-15
Methylene Chloride 3.7J ug/m3 03/24/19 01:175.7TO-15
Naphthalene 10.2 ug/m3 03/24/19 01:174.3TO-15
Tetrachloroethene 0.71J ug/m3 03/24/19 01:171.1TO-15
Toluene 2.9 ug/m3 03/24/19 01:171.2TO-15
Trichloroethene 0.85J ug/m3 03/24/19 01:170.88TO-15
Trichlorofluoromethane 1.6J ug/m3 03/24/19 01:171.8TO-15
m&p-Xylene 5.4 ug/m3 03/24/19 01:172.8TO-15
n-Heptane 0.72J ug/m3 03/24/19 01:171.3TO-15
o-Xylene 2.9 ug/m3 03/24/19 01:171.4TO-15
92421695007 IA-7
1,2-Dichloroethane 1.8 ug/m3 03/24/19 01:460.66TO-15
2-Butanone (MEK)1.4J ug/m3 03/24/19 01:464.8TO-15
Acetone 24.1 ug/m3 03/24/19 01:463.9TO-15
Benzene 0.39J ug/m3 03/24/19 01:460.52TO-15
Dichlorodifluoromethane 2.8 ug/m3 03/24/19 01:461.6TO-15
Ethylbenzene 1.2J ug/m3 03/24/19 01:461.4TO-15
Methylene Chloride 4.5J ug/m3 03/24/19 01:465.7TO-15
Tetrachloroethene 0.76J ug/m3 03/24/19 01:461.1TO-15
Toluene 2.2 ug/m3 03/24/19 01:461.2TO-15
Trichloroethene 0.79J ug/m3 03/24/19 01:460.88TO-15
Trichlorofluoromethane 1.6J ug/m3 03/24/19 01:461.8TO-15
m&p-Xylene 4.0 ug/m3 03/24/19 01:462.8TO-15
o-Xylene 0.82J ug/m3 03/24/19 01:461.4TO-15
92421695008 SS-3R
1,1,1-Trichloroethane 33.8 ug/m3 03/24/19 02:142.3TO-15
1,1-Dichloroethane 3.0 ug/m3 03/24/19 02:141.7TO-15
1,1-Dichloroethene 57.4 ug/m3 03/24/19 02:141.7TO-15
1,2,4-Trimethylbenzene 2.6 ug/m3 03/24/19 02:142.1TO-15
1,3,5-Trimethylbenzene 2.1J ug/m3 03/24/19 02:142.1TO-15
2-Butanone (MEK)8.6 ug/m3 03/24/19 02:146.3TO-15
2-Hexanone 2.2J ug/m3 03/24/19 02:148.7TO-15
REPORT OF LABORATORY ANALYSIS
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Page 6 of 24
#=HO#
SUMMARY OF DETECTION
Pace Project No.:
Project:
92421695
Hawkins
Parameters AnalyzedResult
Lab Sample ID
Report Limit QualifiersUnitsMethod
Client Sample ID
92421695008 SS-3R
Acetone 52.7 ug/m3 03/24/19 02:145.1TO-15
Benzene 4.8 ug/m3 03/24/19 02:140.68TO-15
Chloroform 53.3 ug/m3 03/24/19 02:141.0TO-15
Cyclohexane 2.2J ug/m3 03/24/19 02:143.7TO-15
Dichlorodifluoromethane 2.2 ug/m3 03/24/19 02:142.1TO-15
Ethylbenzene 2.0 ug/m3 03/24/19 02:141.9TO-15
Methylene Chloride 26.6 ug/m3 03/24/19 02:147.4TO-15
Naphthalene 6.7 ug/m3 03/24/19 02:145.6TO-15
Tetrachloroethene 681 ug/m3 03/24/19 02:14 E1.4TO-15
Toluene 27.0 ug/m3 03/24/19 02:141.6TO-15
Trichloroethene 47600 ug/m3 03/25/19 02:112940TO-15
Trichlorofluoromethane 1.4J ug/m3 03/24/19 02:142.4TO-15
cis-1,2-Dichloroethene 59.6 ug/m3 03/24/19 02:141.7TO-15
m&p-Xylene 6.5 ug/m3 03/24/19 02:143.7TO-15
o-Xylene 3.1 ug/m3 03/24/19 02:141.9TO-15
trans-1,2-Dichloroethene 120 ug/m3 03/24/19 02:141.7TO-15
REPORT OF LABORATORY ANALYSIS
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Page 7 of 24
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92421695
Hawkins
Sample:IA-1 Lab ID:92421695001 Collected:03/16/19 15:54 Received:03/18/19 14:05 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,1,1-Trichloroethane ND ug/m3 03/23/19 22:25 71-55-61.8 0.49 1.58
1,1-Dichloroethane ND ug/m3 03/23/19 22:25 75-34-31.3 0.36 1.58
1,1-Dichloroethene ND ug/m3 03/23/19 22:25 75-35-41.3 0.43 1.58
1,2,4-Trimethylbenzene ND ug/m3 03/23/19 22:25 95-63-61.6 0.71 1.58
1,2-Dichloroethane ND ug/m3 03/23/19 22:25 107-06-20.65 0.24 1.58
1,3,5-Trimethylbenzene ND ug/m3 03/23/19 22:25 108-67-81.6 0.63 1.58
2-Butanone (MEK)1.2J ug/m3 03/23/19 22:25 78-93-34.7 0.58 1.58
2-Hexanone ND ug/m3 03/23/19 22:25 591-78-66.6 1.2 1.58
Acetone 290 ug/m3 03/23/19 22:25 67-64-13.8 1.9 1.58
Benzene 0.49J ug/m3 03/23/19 22:25 71-43-20.51 0.24 1.58
Chloroform ND ug/m3 03/23/19 22:25 67-66-30.78 0.31 1.58
Cyclohexane ND ug/m3 03/23/19 22:25 110-82-72.8 0.56 1.58
Dichlorodifluoromethane 2.4 ug/m3 03/23/19 22:25 75-71-81.6 0.46 1.58
Ethyl acetate 1.5 ug/m3 03/23/19 22:25 141-78-61.2 0.30 1.58
Ethylbenzene ND ug/m3 03/23/19 22:25 100-41-41.4 0.48 1.58
Methylene Chloride 3.9J ug/m3 03/23/19 22:25 75-09-25.6 1.5 1.58
Naphthalene ND ug/m3 03/23/19 22:25 91-20-34.2 2.1 1.58
Propylene ND ug/m3 03/23/19 22:25 115-07-10.55 0.23 1.58
Styrene ND ug/m3 03/23/19 22:25 100-42-51.4 0.54 1.58
Tetrachloroethene ND ug/m3 03/23/19 22:25 127-18-41.1 0.50 1.58
Tetrahydrofuran ND ug/m3 03/23/19 22:25 109-99-90.95 0.41 1.58
Toluene 1.5 ug/m3 03/23/19 22:25 108-88-31.2 0.55 1.58
Trichloroethene ND ug/m3 03/23/19 22:25 79-01-60.86 0.41 1.58
Trichlorofluoromethane 1.3J ug/m3 03/23/19 22:25 75-69-41.8 0.58 1.58
Vinyl chloride ND ug/m3 03/23/19 22:25 75-01-40.41 0.20 1.58
cis-1,2-Dichloroethene ND ug/m3 03/23/19 22:25 156-59-21.3 0.35 1.58
m&p-Xylene ND ug/m3 03/23/19 22:25 179601-23-12.8 1.1 1.58
n-Heptane ND ug/m3 03/23/19 22:25 142-82-51.3 0.60 1.58
o-Xylene ND ug/m3 03/23/19 22:25 95-47-61.4 0.54 1.58
trans-1,2-Dichloroethene ND ug/m3 03/23/19 22:25 156-60-51.3 0.45 1.58
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
Pace Analytical Services, LLC
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Page 8 of 24
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92421695
Hawkins
Sample:IA-2 Lab ID:92421695002 Collected:03/16/19 15:55 Received:03/18/19 14:05 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,1,1-Trichloroethane ND ug/m3 03/23/19 23:22 71-55-61.8 0.50 1.61
1,1-Dichloroethane ND ug/m3 03/23/19 23:22 75-34-31.3 0.36 1.61
1,1-Dichloroethene ND ug/m3 03/23/19 23:22 75-35-41.3 0.44 1.61
1,2,4-Trimethylbenzene ND ug/m3 03/23/19 23:22 95-63-61.6 0.73 1.61
1,2-Dichloroethane ND ug/m3 03/23/19 23:22 107-06-20.66 0.24 1.61
1,3,5-Trimethylbenzene ND ug/m3 03/23/19 23:22 108-67-81.6 0.64 1.61
2-Butanone (MEK)ND ug/m3 03/23/19 23:22 78-93-34.8 0.59 1.61
2-Hexanone ND ug/m3 03/23/19 23:22 591-78-66.7 1.2 1.61
Acetone 7.7 ug/m3 03/23/19 23:22 67-64-13.9 1.9 1.61
Benzene 0.31J ug/m3 03/23/19 23:22 71-43-20.52 0.25 1.61
Chloroform ND ug/m3 03/23/19 23:22 67-66-30.80 0.32 1.61
Cyclohexane ND ug/m3 03/23/19 23:22 110-82-72.8 0.57 1.61
Dichlorodifluoromethane 2.6 ug/m3 03/23/19 23:22 75-71-81.6 0.47 1.61
Ethyl acetate ND ug/m3 03/23/19 23:22 141-78-61.2 0.31 1.61
Ethylbenzene ND ug/m3 03/23/19 23:22 100-41-41.4 0.49 1.61
Methylene Chloride 3.4J ug/m3 03/23/19 23:22 75-09-25.7 1.5 1.61
Naphthalene ND ug/m3 03/23/19 23:22 91-20-34.3 2.1 1.61
Propylene ND ug/m3 03/23/19 23:22 115-07-10.56 0.23 1.61
Styrene ND ug/m3 03/23/19 23:22 100-42-51.4 0.55 1.61
Tetrachloroethene ND ug/m3 03/23/19 23:22 127-18-41.1 0.51 1.61
Tetrahydrofuran ND ug/m3 03/23/19 23:22 109-99-90.97 0.42 1.61
Toluene 1.4 ug/m3 03/23/19 23:22 108-88-31.2 0.57 1.61
Trichloroethene ND ug/m3 03/23/19 23:22 79-01-60.88 0.41 1.61
Trichlorofluoromethane 1.7J ug/m3 03/23/19 23:22 75-69-41.8 0.59 1.61
Vinyl chloride ND ug/m3 03/23/19 23:22 75-01-40.42 0.20 1.61
cis-1,2-Dichloroethene ND ug/m3 03/23/19 23:22 156-59-21.3 0.35 1.61
m&p-Xylene ND ug/m3 03/23/19 23:22 179601-23-12.8 1.1 1.61
n-Heptane ND ug/m3 03/23/19 23:22 142-82-51.3 0.61 1.61
o-Xylene ND ug/m3 03/23/19 23:22 95-47-61.4 0.55 1.61
trans-1,2-Dichloroethene ND ug/m3 03/23/19 23:22 156-60-51.3 0.46 1.61
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
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Page 9 of 24
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92421695
Hawkins
Sample:IA-3 Lab ID:92421695003 Collected:03/16/19 16:02 Received:03/18/19 14:05 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,1,1-Trichloroethane ND ug/m3 03/23/19 23:51 71-55-61.8 0.50 1.61
1,1-Dichloroethane ND ug/m3 03/23/19 23:51 75-34-31.3 0.36 1.61
1,1-Dichloroethene ND ug/m3 03/23/19 23:51 75-35-41.3 0.44 1.61
1,2,4-Trimethylbenzene ND ug/m3 03/23/19 23:51 95-63-61.6 0.73 1.61
1,2-Dichloroethane 2.4 ug/m3 03/23/19 23:51 107-06-20.66 0.24 1.61
1,3,5-Trimethylbenzene ND ug/m3 03/23/19 23:51 108-67-81.6 0.64 1.61
2-Butanone (MEK)0.81J ug/m3 03/23/19 23:51 78-93-34.8 0.59 1.61
2-Hexanone ND ug/m3 03/23/19 23:51 591-78-66.7 1.2 1.61
Acetone 19.5 ug/m3 03/23/19 23:51 67-64-13.9 1.9 1.61
Benzene ND ug/m3 03/23/19 23:51 71-43-20.52 0.25 1.61
Chloroform ND ug/m3 03/23/19 23:51 67-66-30.80 0.32 1.61
Cyclohexane ND ug/m3 03/23/19 23:51 110-82-72.8 0.57 1.61
Dichlorodifluoromethane 2.9 ug/m3 03/23/19 23:51 75-71-81.6 0.47 1.61
Ethyl acetate ND ug/m3 03/23/19 23:51 141-78-61.2 0.31 1.61
Ethylbenzene 1.2J ug/m3 03/23/19 23:51 100-41-41.4 0.49 1.61
Methylene Chloride 3.5J ug/m3 03/23/19 23:51 75-09-25.7 1.5 1.61
Naphthalene ND ug/m3 03/23/19 23:51 91-20-34.3 2.1 1.61
Propylene ND ug/m3 03/23/19 23:51 115-07-10.56 0.23 1.61
Styrene ND ug/m3 03/23/19 23:51 100-42-51.4 0.55 1.61
Tetrachloroethene ND ug/m3 03/23/19 23:51 127-18-41.1 0.51 1.61
Tetrahydrofuran ND ug/m3 03/23/19 23:51 109-99-90.97 0.42 1.61
Toluene 3.2 ug/m3 03/23/19 23:51 108-88-31.2 0.57 1.61
Trichloroethene ND ug/m3 03/23/19 23:51 79-01-60.88 0.41 1.61
Trichlorofluoromethane 1.7J ug/m3 03/23/19 23:51 75-69-41.8 0.59 1.61
Vinyl chloride ND ug/m3 03/23/19 23:51 75-01-40.42 0.20 1.61
cis-1,2-Dichloroethene ND ug/m3 03/23/19 23:51 156-59-21.3 0.35 1.61
m&p-Xylene 3.6 ug/m3 03/23/19 23:51 179601-23-12.8 1.1 1.61
n-Heptane ND ug/m3 03/23/19 23:51 142-82-51.3 0.61 1.61
o-Xylene 0.71J ug/m3 03/23/19 23:51 95-47-61.4 0.55 1.61
trans-1,2-Dichloroethene ND ug/m3 03/23/19 23:51 156-60-51.3 0.46 1.61
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
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Page 10 of 24
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92421695
Hawkins
Sample:IA-4 Lab ID:92421695004 Collected:03/16/19 16:05 Received:03/18/19 14:05 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,1,1-Trichloroethane ND ug/m3 03/24/19 00:20 71-55-61.8 0.49 1.58
1,1-Dichloroethane ND ug/m3 03/24/19 00:20 75-34-31.3 0.36 1.58
1,1-Dichloroethene ND ug/m3 03/24/19 00:20 75-35-41.3 0.43 1.58
1,2,4-Trimethylbenzene ND ug/m3 03/24/19 00:20 95-63-61.6 0.71 1.58
1,2-Dichloroethane 1.9 ug/m3 03/24/19 00:20 107-06-20.65 0.24 1.58
1,3,5-Trimethylbenzene ND ug/m3 03/24/19 00:20 108-67-81.6 0.63 1.58
2-Butanone (MEK)1.3J ug/m3 03/24/19 00:20 78-93-34.7 0.58 1.58
2-Hexanone ND ug/m3 03/24/19 00:20 591-78-66.6 1.2 1.58
Acetone 21.3 ug/m3 03/24/19 00:20 67-64-13.8 1.9 1.58
Benzene 0.45J ug/m3 03/24/19 00:20 71-43-20.51 0.24 1.58
Chloroform ND ug/m3 03/24/19 00:20 67-66-30.78 0.31 1.58
Cyclohexane ND ug/m3 03/24/19 00:20 110-82-72.8 0.56 1.58
Dichlorodifluoromethane 2.7 ug/m3 03/24/19 00:20 75-71-81.6 0.46 1.58
Ethyl acetate 0.75J ug/m3 03/24/19 00:20 141-78-61.2 0.30 1.58
Ethylbenzene 0.82J ug/m3 03/24/19 00:20 100-41-41.4 0.48 1.58
Methylene Chloride 3.9J ug/m3 03/24/19 00:20 75-09-25.6 1.5 1.58
Naphthalene ND ug/m3 03/24/19 00:20 91-20-34.2 2.1 1.58
Propylene ND ug/m3 03/24/19 00:20 115-07-10.55 0.23 1.58
Styrene ND ug/m3 03/24/19 00:20 100-42-51.4 0.54 1.58
Tetrachloroethene ND ug/m3 03/24/19 00:20 127-18-41.1 0.50 1.58
Tetrahydrofuran ND ug/m3 03/24/19 00:20 109-99-90.95 0.41 1.58
Toluene 2.0 ug/m3 03/24/19 00:20 108-88-31.2 0.55 1.58
Trichloroethene ND ug/m3 03/24/19 00:20 79-01-60.86 0.41 1.58
Trichlorofluoromethane ND ug/m3 03/24/19 00:20 75-69-41.8 0.58 1.58
Vinyl chloride ND ug/m3 03/24/19 00:20 75-01-40.41 0.20 1.58
cis-1,2-Dichloroethene ND ug/m3 03/24/19 00:20 156-59-21.3 0.35 1.58
m&p-Xylene 3.7 ug/m3 03/24/19 00:20 179601-23-12.8 1.1 1.58
n-Heptane ND ug/m3 03/24/19 00:20 142-82-51.3 0.60 1.58
o-Xylene 0.78J ug/m3 03/24/19 00:20 95-47-61.4 0.54 1.58
trans-1,2-Dichloroethene ND ug/m3 03/24/19 00:20 156-60-51.3 0.45 1.58
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
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Page 11 of 24
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92421695
Hawkins
Sample:IA-5 Lab ID:92421695005 Collected:03/16/19 16:15 Received:03/18/19 14:05 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,1,1-Trichloroethane ND ug/m3 03/24/19 00:48 71-55-61.8 0.49 1.58
1,1-Dichloroethane ND ug/m3 03/24/19 00:48 75-34-31.3 0.36 1.58
1,1-Dichloroethene ND ug/m3 03/24/19 00:48 75-35-41.3 0.43 1.58
1,2,4-Trimethylbenzene 1.0J ug/m3 03/24/19 00:48 95-63-61.6 0.71 1.58
1,2-Dichloroethane 3.8 ug/m3 03/24/19 00:48 107-06-20.65 0.24 1.58
1,3,5-Trimethylbenzene ND ug/m3 03/24/19 00:48 108-67-81.6 0.63 1.58
2-Butanone (MEK)0.87J ug/m3 03/24/19 00:48 78-93-34.7 0.58 1.58
2-Hexanone ND ug/m3 03/24/19 00:48 591-78-66.6 1.2 1.58
Acetone 53.2 ug/m3 03/24/19 00:48 67-64-13.8 1.9 1.58
Benzene 0.47J ug/m3 03/24/19 00:48 71-43-20.51 0.24 1.58
Chloroform ND ug/m3 03/24/19 00:48 67-66-30.78 0.31 1.58
Cyclohexane ND ug/m3 03/24/19 00:48 110-82-72.8 0.56 1.58
Dichlorodifluoromethane 2.6 ug/m3 03/24/19 00:48 75-71-81.6 0.46 1.58
Ethyl acetate 3.6 ug/m3 03/24/19 00:48 141-78-61.2 0.30 1.58
Ethylbenzene ND ug/m3 03/24/19 00:48 100-41-41.4 0.48 1.58
Methylene Chloride 7.9 ug/m3 03/24/19 00:48 75-09-25.6 1.5 1.58
Naphthalene ND ug/m3 03/24/19 00:48 91-20-34.2 2.1 1.58
Propylene ND ug/m3 03/24/19 00:48 115-07-10.55 0.23 1.58
Styrene ND ug/m3 03/24/19 00:48 100-42-51.4 0.54 1.58
Tetrachloroethene ND ug/m3 03/24/19 00:48 127-18-41.1 0.50 1.58
Tetrahydrofuran ND ug/m3 03/24/19 00:48 109-99-90.95 0.41 1.58
Toluene 3.1 ug/m3 03/24/19 00:48 108-88-31.2 0.55 1.58
Trichloroethene 0.57J ug/m3 03/24/19 00:48 79-01-60.86 0.41 1.58
Trichlorofluoromethane 1.8J ug/m3 03/24/19 00:48 75-69-41.8 0.58 1.58
Vinyl chloride ND ug/m3 03/24/19 00:48 75-01-40.41 0.20 1.58
cis-1,2-Dichloroethene ND ug/m3 03/24/19 00:48 156-59-21.3 0.35 1.58
m&p-Xylene ND ug/m3 03/24/19 00:48 179601-23-12.8 1.1 1.58
n-Heptane ND ug/m3 03/24/19 00:48 142-82-51.3 0.60 1.58
o-Xylene ND ug/m3 03/24/19 00:48 95-47-61.4 0.54 1.58
trans-1,2-Dichloroethene ND ug/m3 03/24/19 00:48 156-60-51.3 0.45 1.58
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
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Page 12 of 24
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92421695
Hawkins
Sample:IA-6 Lab ID:92421695006 Collected:03/16/19 16:20 Received:03/18/19 14:05 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,1,1-Trichloroethane ND ug/m3 03/24/19 01:17 71-55-61.8 0.50 1.61
1,1-Dichloroethane ND ug/m3 03/24/19 01:17 75-34-31.3 0.36 1.61
1,1-Dichloroethene ND ug/m3 03/24/19 01:17 75-35-41.3 0.44 1.61
1,2,4-Trimethylbenzene 14.5 ug/m3 03/24/19 01:17 95-63-61.6 0.73 1.61
1,2-Dichloroethane 0.60J ug/m3 03/24/19 01:17 107-06-20.66 0.24 1.61
1,3,5-Trimethylbenzene 3.9 ug/m3 03/24/19 01:17 108-67-81.6 0.64 1.61
2-Butanone (MEK)0.96J ug/m3 03/24/19 01:17 78-93-34.8 0.59 1.61
2-Hexanone ND ug/m3 03/24/19 01:17 591-78-66.7 1.2 1.61
Acetone 34.9 ug/m3 03/24/19 01:17 67-64-13.9 1.9 1.61
Benzene 0.27J ug/m3 03/24/19 01:17 71-43-20.52 0.25 1.61
Chloroform ND ug/m3 03/24/19 01:17 67-66-30.80 0.32 1.61
Cyclohexane ND ug/m3 03/24/19 01:17 110-82-72.8 0.57 1.61
Dichlorodifluoromethane 2.8 ug/m3 03/24/19 01:17 75-71-81.6 0.47 1.61
Ethyl acetate 1.4 ug/m3 03/24/19 01:17 141-78-61.2 0.31 1.61
Ethylbenzene 1.4J ug/m3 03/24/19 01:17 100-41-41.4 0.49 1.61
Methylene Chloride 3.7J ug/m3 03/24/19 01:17 75-09-25.7 1.5 1.61
Naphthalene 10.2 ug/m3 03/24/19 01:17 91-20-34.3 2.1 1.61
Propylene ND ug/m3 03/24/19 01:17 115-07-10.56 0.23 1.61
Styrene ND ug/m3 03/24/19 01:17 100-42-51.4 0.55 1.61
Tetrachloroethene 0.71J ug/m3 03/24/19 01:17 127-18-41.1 0.51 1.61
Tetrahydrofuran ND ug/m3 03/24/19 01:17 109-99-90.97 0.42 1.61
Toluene 2.9 ug/m3 03/24/19 01:17 108-88-31.2 0.57 1.61
Trichloroethene 0.85J ug/m3 03/24/19 01:17 79-01-60.88 0.41 1.61
Trichlorofluoromethane 1.6J ug/m3 03/24/19 01:17 75-69-41.8 0.59 1.61
Vinyl chloride ND ug/m3 03/24/19 01:17 75-01-40.42 0.20 1.61
cis-1,2-Dichloroethene ND ug/m3 03/24/19 01:17 156-59-21.3 0.35 1.61
m&p-Xylene 5.4 ug/m3 03/24/19 01:17 179601-23-12.8 1.1 1.61
n-Heptane 0.72J ug/m3 03/24/19 01:17 142-82-51.3 0.61 1.61
o-Xylene 2.9 ug/m3 03/24/19 01:17 95-47-61.4 0.55 1.61
trans-1,2-Dichloroethene ND ug/m3 03/24/19 01:17 156-60-51.3 0.46 1.61
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
Pace Analytical Services, LLC
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Page 13 of 24
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92421695
Hawkins
Sample:IA-7 Lab ID:92421695007 Collected:03/16/19 16:25 Received:03/18/19 14:05 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,1,1-Trichloroethane ND ug/m3 03/24/19 01:46 71-55-61.8 0.50 1.61
1,1-Dichloroethane ND ug/m3 03/24/19 01:46 75-34-31.3 0.36 1.61
1,1-Dichloroethene ND ug/m3 03/24/19 01:46 75-35-41.3 0.44 1.61
1,2,4-Trimethylbenzene ND ug/m3 03/24/19 01:46 95-63-61.6 0.73 1.61
1,2-Dichloroethane 1.8 ug/m3 03/24/19 01:46 107-06-20.66 0.24 1.61
1,3,5-Trimethylbenzene ND ug/m3 03/24/19 01:46 108-67-81.6 0.64 1.61
2-Butanone (MEK)1.4J ug/m3 03/24/19 01:46 78-93-34.8 0.59 1.61
2-Hexanone ND ug/m3 03/24/19 01:46 591-78-66.7 1.2 1.61
Acetone 24.1 ug/m3 03/24/19 01:46 67-64-13.9 1.9 1.61
Benzene 0.39J ug/m3 03/24/19 01:46 71-43-20.52 0.25 1.61
Chloroform ND ug/m3 03/24/19 01:46 67-66-30.80 0.32 1.61
Cyclohexane ND ug/m3 03/24/19 01:46 110-82-72.8 0.57 1.61
Dichlorodifluoromethane 2.8 ug/m3 03/24/19 01:46 75-71-81.6 0.47 1.61
Ethyl acetate ND ug/m3 03/24/19 01:46 141-78-61.2 0.31 1.61
Ethylbenzene 1.2J ug/m3 03/24/19 01:46 100-41-41.4 0.49 1.61
Methylene Chloride 4.5J ug/m3 03/24/19 01:46 75-09-25.7 1.5 1.61
Naphthalene ND ug/m3 03/24/19 01:46 91-20-34.3 2.1 1.61
Propylene ND ug/m3 03/24/19 01:46 115-07-10.56 0.23 1.61
Styrene ND ug/m3 03/24/19 01:46 100-42-51.4 0.55 1.61
Tetrachloroethene 0.76J ug/m3 03/24/19 01:46 127-18-41.1 0.51 1.61
Tetrahydrofuran ND ug/m3 03/24/19 01:46 109-99-90.97 0.42 1.61
Toluene 2.2 ug/m3 03/24/19 01:46 108-88-31.2 0.57 1.61
Trichloroethene 0.79J ug/m3 03/24/19 01:46 79-01-60.88 0.41 1.61
Trichlorofluoromethane 1.6J ug/m3 03/24/19 01:46 75-69-41.8 0.59 1.61
Vinyl chloride ND ug/m3 03/24/19 01:46 75-01-40.42 0.20 1.61
cis-1,2-Dichloroethene ND ug/m3 03/24/19 01:46 156-59-21.3 0.35 1.61
m&p-Xylene 4.0 ug/m3 03/24/19 01:46 179601-23-12.8 1.1 1.61
n-Heptane ND ug/m3 03/24/19 01:46 142-82-51.3 0.61 1.61
o-Xylene 0.82J ug/m3 03/24/19 01:46 95-47-61.4 0.55 1.61
trans-1,2-Dichloroethene ND ug/m3 03/24/19 01:46 156-60-51.3 0.46 1.61
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
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Page 14 of 24
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92421695
Hawkins
Sample:SS-3R Lab ID:92421695008 Collected:03/16/19 16:35 Received:03/18/19 14:05 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,1,1-Trichloroethane 33.8 ug/m3 03/24/19 02:14 71-55-62.3 0.65 2.1
1,1-Dichloroethane 3.0 ug/m3 03/24/19 02:14 75-34-31.7 0.47 2.1
1,1-Dichloroethene 57.4 ug/m3 03/24/19 02:14 75-35-41.7 0.58 2.1
1,2,4-Trimethylbenzene 2.6 ug/m3 03/24/19 02:14 95-63-62.1 0.95 2.1
1,2-Dichloroethane ND ug/m3 03/24/19 02:14 107-06-20.86 0.32 2.1
1,3,5-Trimethylbenzene 2.1J ug/m3 03/24/19 02:14 108-67-82.1 0.84 2.1
2-Butanone (MEK)8.6 ug/m3 03/24/19 02:14 78-93-36.3 0.77 2.1
2-Hexanone 2.2J ug/m3 03/24/19 02:14 591-78-68.7 1.6 2.1
Acetone 52.7 ug/m3 03/24/19 02:14 67-64-15.1 2.5 2.1
Benzene 4.8 ug/m3 03/24/19 02:14 71-43-20.68 0.32 2.1
Chloroform 53.3 ug/m3 03/24/19 02:14 67-66-31.0 0.41 2.1
Cyclohexane 2.2J ug/m3 03/24/19 02:14 110-82-73.7 0.74 2.1
Dichlorodifluoromethane 2.2 ug/m3 03/24/19 02:14 75-71-82.1 0.62 2.1
Ethyl acetate ND ug/m3 03/24/19 02:14 141-78-61.5 0.40 2.1
Ethylbenzene 2.0 ug/m3 03/24/19 02:14 100-41-41.9 0.64 2.1
Methylene Chloride 26.6 ug/m3 03/24/19 02:14 75-09-27.4 2.0 2.1
Naphthalene 6.7 ug/m3 03/24/19 02:14 91-20-35.6 2.8 2.1
Propylene ND ug/m3 03/24/19 02:14 115-07-10.74 0.30 2.1
Styrene ND ug/m3 03/24/19 02:14 100-42-51.8 0.72 2.1
Tetrachloroethene 681 ug/m3 03/24/19 02:14 127-18-4 E1.4 0.66 2.1
Tetrahydrofuran ND ug/m3 03/24/19 02:14 109-99-91.3 0.55 2.1
Toluene 27.0 ug/m3 03/24/19 02:14 108-88-31.6 0.74 2.1
Trichloroethene 47600 ug/m3 03/25/19 02:11 79-01-6294013805376
Trichlorofluoromethane 1.4J ug/m3 03/24/19 02:14 75-69-42.4 0.77 2.1
Vinyl chloride ND ug/m3 03/24/19 02:14 75-01-40.55 0.26 2.1
cis-1,2-Dichloroethene 59.6 ug/m3 03/24/19 02:14 156-59-21.7 0.46 2.1
m&p-Xylene 6.5 ug/m3 03/24/19 02:14 179601-23-13.7 1.5 2.1
n-Heptane ND ug/m3 03/24/19 02:14 142-82-51.7 0.80 2.1
o-Xylene 3.1 ug/m3 03/24/19 02:14 95-47-61.9 0.72 2.1
trans-1,2-Dichloroethene 120 ug/m3 03/24/19 02:14 156-60-51.7 0.60 2.1
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
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Page 15 of 24
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92421695
Hawkins
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
595368
TO-15
TO-15
TO15 MSV AIR Low Level
Associated Lab Samples:92421695001, 92421695002, 92421695003, 92421695004, 92421695005, 92421695006, 92421695007,
92421695008
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:3218984
Associated Lab Samples:92421695001, 92421695002, 92421695003, 92421695004, 92421695005, 92421695006, 92421695007,
92421695008
Matrix:Air
AnalyzedMDL
1,1,1-Trichloroethane ug/m3 ND 1.1 03/23/19 11:300.31
1,1-Dichloroethane ug/m3 ND 0.82 03/23/19 11:300.22
1,1-Dichloroethene ug/m3 ND 0.81 03/23/19 11:300.27
1,2,4-Trimethylbenzene ug/m3 ND 1.0 03/23/19 11:300.45
1,2-Dichloroethane ug/m3 ND 0.41 03/23/19 11:300.15
1,3,5-Trimethylbenzene ug/m3 ND 1.0 03/23/19 11:300.40
2-Butanone (MEK)ug/m3 ND 3.0 03/23/19 11:300.37
2-Hexanone ug/m3 ND 4.2 03/23/19 11:300.74
Acetone ug/m3 ND 2.4 03/23/19 11:301.2
Benzene ug/m3 ND 0.32 03/23/19 11:300.15
Chloroform ug/m3 ND 0.50 03/23/19 11:300.20
cis-1,2-Dichloroethene ug/m3 ND 0.81 03/23/19 11:300.22
Cyclohexane ug/m3 ND 1.8 03/23/19 11:300.35
Dichlorodifluoromethane ug/m3 ND 1.0 03/23/19 11:300.29
Ethyl acetate ug/m3 ND 0.73 03/23/19 11:300.19
Ethylbenzene ug/m3 ND 0.88 03/23/19 11:300.30
m&p-Xylene ug/m3 ND 1.8 03/23/19 11:300.70
Methylene Chloride ug/m3 ND 3.5 03/23/19 11:300.94
n-Heptane ug/m3 ND 0.83 03/23/19 11:300.38
Naphthalene ug/m3 ND 2.7 03/23/19 11:301.3
o-Xylene ug/m3 ND 0.88 03/23/19 11:300.34
Propylene ug/m3 ND 0.35 03/23/19 11:300.14
Styrene ug/m3 ND 0.87 03/23/19 11:300.34
Tetrachloroethene ug/m3 ND 0.69 03/23/19 11:300.31
Tetrahydrofuran ug/m3 ND 0.60 03/23/19 11:300.26
Toluene ug/m3 ND 0.77 03/23/19 11:300.35
trans-1,2-Dichloroethene ug/m3 ND 0.81 03/23/19 11:300.28
Trichloroethene ug/m3 ND 0.55 03/23/19 11:300.26
Trichlorofluoromethane ug/m3 ND 1.1 03/23/19 11:300.37
Vinyl chloride ug/m3 ND 0.26 03/23/19 11:300.13
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3218985LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1-Trichloroethane ug/m3 63.255.5 114 70-130
1,1-Dichloroethane ug/m3 46.141.1 112 70-130
1,1-Dichloroethene ug/m3 46.140.3 114 70-130
1,2,4-Trimethylbenzene ug/m3 63.750 127 70-134
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
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9800 Kincey Ave. Suite 100
Huntersville, NC 28078
(704)875-9092
Page 16 of 24
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92421695
Hawkins
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3218985LABORATORY CONTROL SAMPLE:
LCSSpike
1,2-Dichloroethane ug/m3 45.441.1 110 70-130
1,3,5-Trimethylbenzene ug/m3 62.250 124 70-132
2-Butanone (MEK)ug/m3 34.430 115 70-130
2-Hexanone ug/m3 53.741.6 129 70-135
Acetone ug/m3 126121 105 67-130
Benzene ug/m3 36.232.5 112 70-130
Chloroform ug/m3 53.049.6 107 70-130
cis-1,2-Dichloroethene ug/m3 41.140.3 102 70-130
Cyclohexane ug/m3 40.035 114 68-132
Dichlorodifluoromethane ug/m3 55.150.3 110 70-130
Ethyl acetate ug/m3 42.336.6 115 69-130
Ethylbenzene ug/m3 52.544.1 119 67-131
m&p-Xylene ug/m3 10788.3 121 70-132
Methylene Chloride ug/m3 184177 104 65-130
n-Heptane ug/m3 45.841.7 110 65-130
Naphthalene ug/m3 57.753.3 108 56-130
o-Xylene ug/m3 51.244.1 116 70-130
Propylene ug/m3 20.217.5 116 67-130
Styrene ug/m3 55.043.3 127 69-136
Tetrachloroethene ug/m3 77.368.9 112 70-130
Tetrahydrofuran ug/m3 33.730 113 68-131
Toluene ug/m3 42.938.3 112 70-130
trans-1,2-Dichloroethene ug/m3 45.540.3 113 70-130
Trichloroethene ug/m3 57.954.6 106 70-130
Trichlorofluoromethane ug/m3 59.757.1 104 65-130
Vinyl chloride ug/m3 29.126 112 70-130
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92421695001
3219193SAMPLE DUPLICATE:
1,1,1-Trichloroethane ug/m3 ND 25ND
1,1-Dichloroethane ug/m3 ND 25ND
1,1-Dichloroethene ug/m3 ND 25ND
1,2,4-Trimethylbenzene ug/m3 ND 25ND
1,2-Dichloroethane ug/m3 ND 25ND
1,3,5-Trimethylbenzene ug/m3 ND 25ND
2-Butanone (MEK)ug/m3 0.85J 251.2J
2-Hexanone ug/m3 ND 25ND
Acetone ug/m3 287 1 25290
Benzene ug/m3 0.55 250.49J
Chloroform ug/m3 ND 25ND
cis-1,2-Dichloroethene ug/m3 ND 25ND
Cyclohexane ug/m3 ND 25ND
Dichlorodifluoromethane ug/m3 3.1 R126252.4
Ethyl acetate ug/m3 1.9 21 251.5
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
(704)875-9092
Page 17 of 24
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92421695
Hawkins
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92421695001
3219193SAMPLE DUPLICATE:
Ethylbenzene ug/m3 ND 25ND
m&p-Xylene ug/m3 ND 25ND
Methylene Chloride ug/m3 3.8J 253.9J
n-Heptane ug/m3 ND 25ND
Naphthalene ug/m3 ND 25ND
o-Xylene ug/m3 ND 25ND
Propylene ug/m3 ND 25ND
Styrene ug/m3 ND 25ND
Tetrachloroethene ug/m3 ND 25ND
Tetrahydrofuran ug/m3 ND 25ND
Toluene ug/m3 1.7 12 251.5
trans-1,2-Dichloroethene ug/m3 ND 25ND
Trichloroethene ug/m3 ND 25ND
Trichlorofluoromethane ug/m3 1.3J 251.3J
Vinyl chloride ug/m3 ND 25ND
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
10467590001
3219194SAMPLE DUPLICATE:
1,1,1-Trichloroethane ug/m3 ND 25ND
1,1-Dichloroethane ug/m3 ND 25ND
1,1-Dichloroethene ug/m3 ND 25ND
1,2,4-Trimethylbenzene ug/m3 ND 25ND
1,2-Dichloroethane ug/m3 ND 25ND
1,3,5-Trimethylbenzene ug/m3 ND 25ND
2-Butanone (MEK)ug/m3 1.6J 25ND
2-Hexanone ug/m3 ND 25ND
Acetone ug/m3 14.9 4 2514.3
Benzene ug/m3 1.1 2 251.1
Chloroform ug/m3 ND 25ND
cis-1,2-Dichloroethene ug/m3 ND 25ND
Cyclohexane ug/m3 ND 25ND
Dichlorodifluoromethane ug/m3 3.0 15 252.6
Ethyl acetate ug/m3 0.67J 25ND
Ethylbenzene ug/m3 ND 25ND
m&p-Xylene ug/m3 2.4J 25ND
Methylene Chloride ug/m3 9.4 6 258.9
n-Heptane ug/m3 ND 25ND
Naphthalene ug/m3 3.1J 25ND
o-Xylene ug/m3 0.81J 25ND
Propylene ug/m3 ND 25ND
Styrene ug/m3 1.1J 25ND
Tetrachloroethene ug/m3 ND 25ND
Tetrahydrofuran ug/m3 ND 25ND
Toluene ug/m3 4.4 4 254.3
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
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9800 Kincey Ave. Suite 100
Huntersville, NC 28078
(704)875-9092
Page 18 of 24
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92421695
Hawkins
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
10467590001
3219194SAMPLE DUPLICATE:
trans-1,2-Dichloroethene ug/m3 ND 25ND
Trichloroethene ug/m3 12.2 4 2511.7
Trichlorofluoromethane ug/m3 1.4J 25ND
Vinyl chloride ug/m3 ND 25ND
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
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9800 Kincey Ave. Suite 100
Huntersville, NC 28078
(704)875-9092
Page 19 of 24
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92421695
Hawkins
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
Pace Analytical Services - MinneapolisPASI-M
ANALYTE QUALIFIERS
Analyte concentration exceeded the calibration range. The reported result is estimated.E
RPD value was outside control limits.R1
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
(704)875-9092
Page 20 of 24
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92421695
Hawkins
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92421695001 595368IA-1 TO-15
92421695002 595368IA-2 TO-15
92421695003 595368IA-3 TO-15
92421695004 595368IA-4 TO-15
92421695005 595368IA-5 TO-15
92421695006 595368IA-6 TO-15
92421695007 595368IA-7 TO-15
92421695008 595368SS-3R TO-15
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 03/25/2019 05:21 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
(704)875-9092
Page 21 of 24
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