22055_Charlotte Oil & Fertilizer_Final Revised Work Plan_2018-12-28

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ADDITIONAL ASSESSMENT WORK PLAN
CHARLOTTE OIL & FERTILIZER WORKS SITE
2151 HAWKINS STREET
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
ECS PROJECT NO. 49:7172-C
BROWNFIELDS PROJECT ID: 22055-18-060
PREPARED FOR
PORTMAN HOLDINGS, LLC
ORIGINALLY SUBMITTED: DECEMBER 18, 2018
REVISION 1.0 SUBMITTED: DECEMBER 28, 2018

esECS SOUTHEAST, LLP "Setting the Standard for Service"
- -- —,� Geotechnical • Construction Materials • Environmental • Facilities NC Registered Engineering Firm F-1078
NC Registered Geologists Firm 04M
SC Registered Engineering Firm 3239
December 28, 2018
Mr. Cody Cannon
NCDEQ, DWM, NC Brownfields Program
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115
Reference: Additional Assessment Work Plan
(Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018)
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Dear Mr. Cannon:
ECS Southeast, LLP (ECS) has prepared a work plan to for additional assessment at the subject site. This
plan has been developed at the request of the North Carolina - Brownfields Program (NCBP).
ECS appreciates the opportunity to provide our environmental consulting services to you on this project. If
you have any questions concerning this report or this project, please contact us.
Sincerely,
ECS SOUTHEAST, LLP
Matthew H. McDuff ie, P.G.
Principal Geologist
[e-mail]
704-525-5152
?seph P. Nestor, P.G., P: .
Environmental Senior Project Manager
704-280-7422
[e-mail]
NC Corporate Geology License ##C-406
cc: Hard Jarvenpaa —Portman Holdings, LLC
'o in S. Lair, P.G.
Principal Geologist
[e-mail]
910-726-3035
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ECS Capitol Services, PLLC • ECS Florida, LLC • ECS Mid -Atlantic, LLC - ECS Midwest, LLC • ECS Southeast, LLP • ECS Texas, LLP
www.ecsiimited.com

TABLE OF CONTENTS
1.0 PROJECT INFORMATION...........................................................................................................1
2.0 PREVIOUS INVESTIGATION ACTIVITIES AND IDENTIFIED DATA GAPS ........................................ 1
3.0 PROPOSED DEVELOPMENT................................................................................................... 5
4.0 OBJECTIVES OF THE WORKPLAN............................................................................................... 5
4.0 CONTACTS................................................................................................................................ 9
4.0 DEVIATION FROM APPROVED PLAN....................................................................................... 10
5.0 REPORTING............................................................................................................................10
6.0 REFERENCES...........................................................................................................................11
FIGURES
Figure 1 Site Location Map
Figure 2 Site Map
Figure 3 Previous Sample Location Map for August 2018 Assessment Activities
Figure 4 Proposed Sample Location Map
TABLES
Table 1 Soil Sample Results for August 2018 Assessment Activities
Table 2 Groundwater Sample Results for August 2018 Assessment Activities
APPENDICES
Appendix A Target Analyte Lists (EPA Methods 8260, 8270, and TO-15)

Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
1.0 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.
The location of the subject property is shown on Figures 1 and 2.
The entity, 2151 Hawkins, LLC, intends to redevelop the subject property. Because of known or suspected
environmental impacts, 2151 Hawkins, LLC, submitted an application to the North Carolina Department
of Environmental Quality (NCDEQ) Division of Waste Management (DWM) to for the subject property to
be included in the North Carolina Brownfields Program (NCBP). A letter of eligibility was issued by the
NCDEQ-DWM on October 17, 2018. The Brownfields Project number assigned by NCDQ-DWM is 22055-
18-060.
2.0 PREVIOUS INVESTIGATION ACTIVITIES AND IDENTIFIED DATA GAPS
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. 20., 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.
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Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
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-galIons, 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,
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
(PCE, 8.4 ug/L). In addition, several monitoring wells to the south had detections above their
respective NC2LGWQS, with measured groundwater flow towards the subject property.
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, 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.
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Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
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.
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 VOC
concentrations 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). Figures 3 and 4 show the locations were soil and groundwater samples
were collected in August 2018.
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Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
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.
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 sample locations and summary of analysis are shown on Figures 3 and 4 and Tables 1 and 2.
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Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
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.
3.0 PROPOSED DEVELOPMENT
The redevelopment is anticipated to include a 15- to 17-story office building.
4.0 OBJECTIVES OF THE WORKPLAN
The objectives of this work plan is to collect additional soil, groundwater, and soil gas samples at the site
for laboratory analysis and complete a receptor survey to fill data gaps from the previous investigation
activities so appropriate risk management decisions may be made for inclusion in the Brownfields
Program. The soil and groundwater sampling will be conducted in general accordance with the North
Carolina Division of Waste Management (NCDWM) Inactive Hazardous Site Branch (IHSB) Guidelines for
Assessment and Cleanup (Revised October 2015). Soil gas sampling will be performed in general
accordance with the NCDWM IHSB Guidelines for Vapor Intrusion (Revised March 2018). ECS will request
a North Carolina certified laboratory provide Level 2 QA/QC data packages for the analytical services
outlined in this section. North Carolina does not certify laboratories for analyses of air samples. ECS will
request that the laboratory analyze air samples for the most current and applicable standards from the
National Environmental Laboratory Accreditation Conference (NELAC) Program. ECS will also request that
the laboratory report method detection limits (MDL) and J-flags (estimated concentrations between the
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Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
method detection limits and the laboratory reporting limit). ECS will follow chain -of -custody protocol
during sample collection and submittal to laboratory.
GROUNDWATER SAMPLING
In general accordance with NCBP correspondence dated November 15, 2018, ECS proposes to construct
and sample up to three permanent monitoring wells at the subject property. Two of these wells will be
located in the vicinity of sample points GW-2 and GW-4 and another well will be located between soil
borings SB-2 and SB-3 along the southwestern wall of the existing building as indicated in the Report of
Environmental Assessment dated August 23, 2018.
ECS proposes to advance borings for the proposed monitoring wells using hollow -stem augers. Schedule
40, PVC casing and screen will be placed through the augers at each well. ECS anticipates using 10 to 15
feet of 0.10-inch slot screen for each well. The well screen for each well will be set to intersect the
apparent water table at the time of drilling. ECS anticipates that the water table will be encountered at
depths of less than 30 feet below ground surface (bgs) and auger refusal will be greater than 40 feet bgs.
As augers are extracted, filter sand will be emplaced through the augers, and around the well screen and
approximately 1 foot above the well screen at each well. A bentonite seal (approximately 1-2 feet thick)
will be emplaced above the sand and hydrated. After allowing bentonite to hydrate for at least one hour,
the remaining annular space at each well will be filled with grout consisting of 95 percent minimum
Portland cement. Each monitoring well will be completed within an 8-inch diameter bolt -down manhole
set flush to grade within a 2-foot by 2-foot concrete pad. Proposed locations of monitoring wells are
shown in Figure 4. The monitoring wells will be developed by over pumping until the majority of fines and
particulate matter are removed. A minimum of three well volumes will be removed from each well during
development. ECS will attempt to achieve a turbidity level in each well of 10 nephelometric turbidity units
(NTUs) or less. The relative elevations of the top of each well will be determined by a North Carolina
licensed surveyor. ECS will subsequently calculate the groundwater elevation by subtracting the
measured depths to water at each well. ECS will use the calculated groundwater elevation data to infer
the groundwater flow direction across the subject property.
After allowing the monitoring wells to stabilize at least 24 hours after construction, ECS will measure water
level in each well and collect groundwater samples. Water level measurements will be collected using an
electronic water level indicator. The monitoring wells will be sampled using low -flow sampling techniques
in general conformance with USEPA guidelines (Revised September 19, 2017) and water quality
measurements will be collected/recorded. ECS will maintain drawdown in each well to less than 0.3 feet
during sampling. Water quality measurements will made using a flow -through cell at intervals no greater
than 5 minutes. Parameters to be measured include turbidity, temperature, specific conductance, pH,
oxidation-reduction potential, and dissolved oxygen. Groundwater samples will be collected when each
well has stabilized. Stabilization will be considered achieved when three consecutive readings are within
the limits shown on the next page:
• Turbidity (10% for values greater than 5 nephelometric turbidity units (NTUs); if three turbidity
values are less than 5 NTU, consider the values as stabilized).
N
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Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
• Dissolved Oxygen (10% for values greater than 0.5 mg/L, if three dissolved
oxygen values are less than 0.5 mg/L, consider the values as stabilized).
• Specific Conductance (5%).
• Temperature (3%).
• pH (± 0.2 standard pH unit).
• Oxidation/Reduction Potential (±10 millivolts)
Groundwater samples from these wells will be analyzed for VOCs, SVOCs and total RCRA metals, and
dissolved RCRA metals. VOCs will be analyzed using EPA Method 8260. SVOCs will be analyzed using EPA
Method 8270. Total RCRA metals and dissolved RCRA metals will be analyzed by EPA Method 6020. ECS
anticipates using Pace Analytical Services, LLC (Pace) for laboratory services. Attached as Appendix A are
target analyte lists from Pace for EPA Methods 8260 and 8270.
One duplicate groundwater sample will be collected and submitted for laboratory analysis of VOCs,
SVOCs, total RCRA metals, and dissolved RCRA metals. One trip blank for groundwater will also be
analyzed for VOCs.
Investigative derived waste (IDW) including soil cuttings and purge water generated from the soil borings
and monitoring well installation and sampling activities will be containerized, sampled, and disposed at
an appropriate facility upon receipt of the laboratory results. The NCBP Project Manager will be notified
when the laboratory results are received and the disposal facility is selected.
SOIL SAMPLING
ECS proposes to utilize a Geoprobe® drill rig to collect continuous soil samples at each soil boring location
specified by and in general accordance with NCBP correspondence dated November 15, 2018. ECS
proposes to collect surficial soil samples from the borings for each of the monitoring wells described in
the previous section. These surficial samples will be collected over the interval 0 to 2 feet bgs and will be
analyzed for parameters discussed later in this paragraph. In addition, samples from each of these borings
will be collected continuously from 2 feet bgs to the apparent water table and will be screened with a
photoionization detector (PID). A sample over a 2-foot interval from each of these boring will be selected
for analyses for the parameters discussed later in this paragraph. These samples will be selected on the
basis of visual, olfactory, and PID readings which are most indicative of a release. If no indications of a
release are noted, a sample of the 2-foot interval immediately above the apparent water table will be
selected for analyses. Two soil samples from each of the three borings (for a total of six samples) will be
analyzed for VOCs by EPA Method 8260, SVOCs by EPA Method 8270, RCRA metals by EPA Method 6020,
nitrates by EPA Method 9056A, and ammonia by EPA Method 4500-NH3. In the event that, total
chromium is detected at concentrations above preliminary soil remediation goals (PSRGs) in a particular
sample, ECS will request that the laboratory also analyze that sample for hexavalent chromium by EPA
Method 7199. One duplicate soil samples will be collected and submitted for these same parameters.
ECS will advance a shallow soil boring in the parking area to the north of the existing building and collect
a sample over the interval 0 to 2 feet bgs. This boring is intended to represent background conditions.
The sample will be analyzed for total RCRA metals by EPA Method 6020.
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Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
ECS will advance a shallow soil boring near the location of soil boring SB-1 as indicated in Report of
Environmental Assessment dated August 23, 2018 and collect a surficial sample over the interval 0 to 2
feet bgs. The sample will be analyzed for polychlorinated biphenyls (PCBs by EPA Method 8082A.
Additional sample material will also be collected and provided to laboratory in the event that there is a
positive detection of PCBs and additional analyses for specific congeners is warranted. One duplicate soil
sample will be collected and submitted for laboratory analysis for PCBs.
Soil cuttings generated from the soil borings will be containerized and disposed of at an appropriate
facility upon receipt of the laboratory results. The Brownfields Project Manager will be notified when the
laboratory results are received and the disposal facility is selected.
SOIL GAS SAMPLING
In general accordance with NCBP correspondence dated November 15, 2018, ECS proposes to collect four
sub slab soil gas samples from beneath the slab of the existing building. The samples will be collected in
the approximate positions shown in Figure 4 which correspond to sample locations pointed out by NCBP
staff during the November 7, 2018 meeting with ECS and 2151 Hawkins, LLC personnel. At each sampling
point a hole will be drilled through the concrete slab floor and a permanents soil gas probe will be
installed. ECS intends to use stainless steel flush mount vapor pins as soil gas probes. The soil gas probes
will be installed in general conformance with manufactures recommendations (Vapor Pin Enterprises, Inc.
March 16, 2018).
The soil gas probe seal will be leak tested using helium gas, a gas shroud, and a helium detector as
recommended in NCDEQ-DWM Vapor Intrusion Guidance (Alexander, March 2018). Helium will be
released into the shroud and the helium concentration inside the shroud will be monitored. When the
helium concentration is approximately 20 percent, a soil gas sample will be collect in a Tedlar° bag. The
concentration of helium in the Tedlar° bag will be measured. If the concentration of helium measured in
the Tedlar° bag is less than 10 percent of the helium concentration inside the shroud, the seal on the soil
gas probe will be considered to be tight and not leaking. If a leak is noted, ECS will make adjustments and
repeat the testing process.
After leak testing the sample train will be purged of approximately 3 tubing volumes at a rate of 200
milliliters per minute or less using a syringe or other appropriate device. The tubing will then be connected
to a pre -evacuated and pre -cleaned Summa canister for sampling. ECS will check and note the vacuum
on each Summa Canister before initiating the sampling procedure. ECS will terminate the sampling
procedure at each sampling point while vacuum is still present in the canister. ECS will note the vacuum
for each canister at the end of the sampling procedure. The Summa canisters will be submitted to a North
Carolina certified laboratory for analyses for VOCs by EPA Method TO-15. As indicated previously, North
Carolina does not certify laboratories for analyses of air samples. ECS will request that the laboratory
analyze air samples for the most current and applicable standards from the NELAC Program. ECS
anticipates Pace) for laboratory services. Attached as Appendix A are target analyte lists from Pace
including EPA Method TO-15.
H-
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Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
One duplicate soil gas sample will be collected and submitted for laboratory analysis by EPA Method TO-
15.
CI IRVFVINI(;
ECS will arrange to have a licensed North Carolina surveyor determine the horizontal location and
elevation of the tops of casings for the existing and new monitoring wells, soil borings, and soil gas sample
points. ECS will request that the survey information be put in a format that may be transferred to a plat
which will be included with the final Brownfields Agreement.
RECEPTOR SURVEY
In general accordance with NCBP correspondence dated November 15, 2018, ECS proposes to perform a
receptor survey in accordance with NCBP guidelines. The survey will be completed on forms provided by
the NCBP. This survey will include the identification of nearby property owners, a reconnaissance of the area,
and a search of government databases.
Owner and Developer's Representative:
Mr. John Calvin Portman IV
2151 Hawkins, LLC
c/o Portman Holdings, LLC
303 Peachtree Center Avenue, Suite 575
Atlanta, Georgia 30303
404 614 5522
[e-mail]
Site Environmental Representative:
Mr. Matthew H. McDuff ie, P.G.
ECS Southeast, LLP
1812 Center Park Drive, Suite D
Charlotte, North Carolina 28217
704-525-5152
mmcduffie(@ecsliomited.com
4.0 CONTACTS
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Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
The NCDEQ Brownfields Program contact:
Mr. Cody Cannon, Brownfields Project Manager
[e-mail]
NCDEQ- Brownfields Program
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115
Phone: [phone]
Mr. Cannon will be notified a minimum of 5 days prior to starting the field work.
4.0 DEVIATION FROM APPROVED PLAN
This work plan is intended to be dynamic and to be adapted to specific and actual site conditions.
Accordingly, should such conditions warrant a change either by addition, deletion or modification of a
procedure, such may be accomplished with agreement between representatives of 2151 Hawkins, LLC
and ECS after consultation with, and subject to approval by the NCBP. Such changes will comply with
applicable local, State, and Federal rules and regulations. A written amendment shall be prepared and
submitted to NCBP for approval (the use of e-mail correspondence shall suffice for approval, followed by
a hard copy or electronic copy provided on Disk or similar media) prior to implementation. Amendments
must have the approval of the NCBP prior to implementation.
5.0 REPORTING
ECS will prepare a written report documenting the field activities, sampling procedures, sample locations,
laboratory procedures and analytical results discussion, and conclusions for submission to the NCBP. The
report will include a figure (or figures) showing sample locations, a figure (or figures) showing analytical
results, data tables, and a potentiometric map. Soil boring logs, monitoring well installation logs,
groundwater sampling logs, soil gas sampling logs, and copies of monitoring well permits will be included
in the report .
If unidentified and unexpected conditions are encountered during the assessment, 2151 Hawkins, LLC
will be notified. Such conditions will be summarized in a report which will be submitted to the NCBP. It
should be noted that the responsibility of notifying NCBP or other external parties lies solely with 2151
Hawkins, LLC and/or with ECS acting on their behalf.
10
C

Additional Assessment Work Plan
Charlotte Oil & Fertilizer Works Site
2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 22055-18-060
ECS Project No. 49-7172-C
Original Submitted December 18, 2018; Revision 1.0 Submitted December 28, 2018
6.0 REFERENCES
Alexander, Delonda (Primary Author), March 2018, Vapor Intrusion Guidance, Version 2, North Carolina
Department of Environmental Quality, Division of Waste Management, Guidance Document, available on
line at:
https://files.nc.gov/ncdeg/Waste%20Management/DWM/NC%20VIG%20Final%2020180316%20v2.pdf
Godfrey, Bruce, Stefan D'Angona, and Tompkin Labs, 2012, Quantitative Leak Testing for Soil Gas Wells
Using a Commercially Available Helium Tracer Shroud, Curtis & Tompkins, Ltd. White Paper, available on
line at:
http://curtisandtompkins.com/wp-content/uploads/2012/09/Helium-Shroud-Paper.pdf
United States Environmental Protection Agency, September 17, 2017 (Revision Date, original publication
date, July 30, 1996), Low Stress (Low Flow) Purging and Sampling Procedure for the Collection of
Groundwater Samples from Monitoring Wells, Quality Assurance Unit, Region 1, 11 Technology Drive,
North Chemsford, Massachusetts, available on line at:
https://www.epa.gov/sites/production/files/2017-10/documents/egasop-gw4.pdf
Vapor Pin Enterprises, Inc. March 16, 2018 (last update), Standard Operating Procedure Use of the VAPOR
PIN° Drilling Guide and Secure Cover, Guidance Document, available on line at:
https://www.vaporpin.com/wp-content/uploads/2018/04/Vapor-Pin-Cover-Drill-Guide-SOP-3-16-
2018.pdf
11
c

FIGURES

l
F ' ILyD�.
27
49
{ J 116
�F
WLor
0
} * L
' f * VXR
} SITE
V �
Cl
11, �A' o �
tj !t ■
SOURCE: N FIGURE 1
USGS Topographic Map SITE LOCATION MAP
Charlotte East Quadrangle S
2016 2151 Hawkins Street
Charlotte, Mecklenburg County, North Carolina
SCALE:
1-inch = 2,000 feet ECS Project Number 49-7172-C
1' 1000, 2000,
TM

TABLES

TABLE 1: SUMMARY OF SOIL ANALYTICAL RESULTS
HAWKINS STREET PROPERTY
2151 HAWKINS STREET
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
ECS PROJECT NO. 49-7172-A
Parameter
ANALYTICAL RESULTS
Sample ID
SB-1
SB-2
SB-3
SB-4
SB-5
SB-6
NCDEQ State Action
Level m k
( b/ g)
Sample Depth (ft)
Collection Date
8/6/18
Total Petroleum Hydrocarbons by Ultraviolet Fluorescence (UVF)
Gasoline Range Organics (GRO)
<0.63
<0.6
<0.57
<0.68
0
<0.66
50
Diesel Range Organics (DRO)
10.2
<0.6
1
5.7
0
1.9
100
Notes:
Results presented in milligrams per kilogram (mg/kg), analogous to parts per million (ppm)
NCDEQ = North Carolina Department of Environmental Quality

TABLE 2: SUMMARY OF GROUNDWATER ANALYTICAL RESULTS
HAWKINS STREET PROPERTY
2151 HAWKINS STREET
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
ECS PROJECT NO. 49-7172-A
Parameter
ANALYTICAL RESULTS
NC2LGWQS
NCDEQ RESIDENTIAL
VISL GWSL
NCDEQ INDUSTRIAL
VISL GWSL
Sample ID
GW-1
GW-2
GW-3
GW-4
GW-5
GW-6
Collection Date
8/6/18
Ammonia by Standard Method 4500-NH3 G
Ammonia as N
310
BRL
BRL
BRL
110
BRL
6,000
4,500,000
19,000,000
Volatile Organic Compounds (VOCs) By EPA Method 8260
Acetone
16
BRL
BRL
8.2
BRL
BRL
6,000
4,500,000
19,000,000
Bromodichloromethane
BRL
BRL
BRL
BRL
BRL
BRL
0.6
8.8
38
Chloroform
BRL
BRL
BRL
BRL
BRL
BRL
70
8.1
36
1,1-Dichloroethane
BRL
BRL
BRL
1.2
BRL
BRL
6
76
330
1,1-Dichloroethylene
BRL
BRL
BRL
6.9
BRL
BRL
350
39
160
cis-1,2-Dichloroethylene
1
BRL
BRL
56
BRL
BRL
70
NS
NS
trans-1,2-Dichloroethylene
BRL
BRL
BRL
0.79
BRL
BRL
100
NS
NS
1,2-Dichloroethane
BRL
BRL
BRL
2.4
BRL
BRL
0.2
22
98
Dibromochloromethane
BRL
BRL
BRL
BRL
BRL
BRL
0.4
NS
NS
Methyl Isobutyl Ketone
BRL
BRL
BRL
BRL
BRL
BRL
100
110,00
470,000
Tetrachloroethylene
BRL
2.2
BRL
1.7
BRL
BRL
0.7
12
48
Trichloroethylene BRL 0.71 0.56 88 BRL BRL 0.7 12 48
Notes:
Results presented in milligrams per kilogram (ug/L), analogous to parts per billion (ppb)
NC2LGWQS = North Carolina 2L Groundwater Quality Standard
NCDEQ = North Carolina Department of Environmental Quality
VISL GWSL = Vapor Intrustion Screening Levels Groundwater Screening Level
Bold denotes an exceedance of the NC2LGWQS
Italics denotes an exceedance of the Residential VISL GWSL
Underline denotes an exceedance of the Industrial VISL GWSL

APPENDIX A

Detection Limits
PASI Charlotte Laboratory
For Acode: 8260 WLL 8260 MSV Low Level
aceAnalytical
vnvw.pacelabsxom
Limits Analytical Preparation Sample Instr. Effective Stop
ID Type Matrix Method Method Type Name Date Date Other Criteria
76168 MDL EPA 8260B
2/6/2018 3/6/2019
#
Analyte
CAS Number
MDL
Units
1
Acetone
67-64-1
10
ug/L
2
Benzene
71-43-2
0.25
ug/L
3
Bromobenzene
108-86-1
0.3
ug/L
4
Bromochloromethane
74-97-5
0.17
ug/L
5
Bromodichloromethane
75-27-4
0.18
ug/L
6
Bromoform
75-25-2
0.26
ug/L
7
Bromomethane
74-83-9
0.29
ug/L
8
2-Butanone (MEK)
78-93-3
0.96
ug/L
9
n-Butylbenzene
104-51-8
0.41
ug/L
10
sec-Butylbenzene
135-98-8
0.38
ug/L
11
tert-Butylbenzene
98-06-6
0.4
ug/L
12
tert-Butyl Alcohol
75-65-0
3.62
ug/L
13
Carbon disulfide
75-15-0
1.15
ug/L
14
Carbon tetrachloride
56-23-5
0.25
ug/L
15
Chlorobenzene
108-90-7
0.23
ug/L
16
Chloroethane
75-00-3
0.54
ug/L
17
Chloroform
67-66-3
0.14
ug/L
18
Chloromethane
74-87-3
0.11
ug/L
19
2-Chlorotoluene
95-49-8
0.35
ug/L
20
4-Chlorotoluene
106-43-4
0.31
ug/L
21
1,2-Dibromo-3-chloropropa
96-12-8
2
ug/L
22
Dibromochloromethane
124-48-1
0.21
ug/L
23
1,2-Dibromoethane (EDB)
106-93-4
0.27
ug/L
24
Dibromomethane
74-95-3
0.21
ug/L
25
1,2-Dichlorobenzene
95-50-1
0.3
ug/L
26
1,3-Dichlorobenzene
541-73-1
0.24
ug/L
27
1,4-Dichlorobenzene
106-46-7
0.33
ug/L
28
Dichlorodifluoromethane
75-71-8
0.21
ug/L
29
1,1-Dichloroethane
75-34-3
0.32
ug/L
30
1,2-Dichloroethane
107-06-2
0.24
ug/L
31
1,2-Dichloroethene (Total)
540-59-0
0.49
ug/L
32
1,1-Dichloroethene
75-35-4
0.56
ug/L
Thursday, December 27, 2018 4:37:50 PM Page 1 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8260 WLL 8260 MSV Low Level
33
cis-1,2-Dichloroethene
156-59-2
0.19
ug/L
34
trans-1,2-Dichloroethene
156-60-5
0.49
ug/L
35
1,2-Dichloropropane
78-87-5
0.27
ug/L
36
1,3-Dichloropropane
142-28-9
0.28
ug/L
37
2,2-Dichloropropane
594-20-7
0.13
ug/L
38
1, 1 -Dichloropropene
563-58-6
0.49
ug/L
39
cis-1,3-Dichloropropene
10061-01-5
0.13
ug/L
40
trans-1,3-Dichloropropene
10061-02-6
0.26
ug/L
41
Ethylbenzene
100-41-4
0.3
ug/L
42
Hexachloro-1,3-butadiene
87-68-3
0.71
ug/L
43
2-Hexanone
591-78-6
0.46
ug/L
44
Isopropylbenzene (Cumene)
98-82-8
0.4
ug/L
45
p-Isopropyltoluene
99-87-6
0.31
ug/L
46
Methylene Chloride
75-09-2
0.97
ug/L
47
4-Methyl-2-pentanone
108-10-1
0.33
ug/L
48
Methyl-tert-butyl ether
1634-04-4
0.21
ug/L
49
Naphthalene
91-20-3
0.24
ug/L
50
n-Propylbenzene
103-65-1
0.42
ug/L
51
Styrene
100-42-5
0.26
ug/L
52
1, 1, 1,2-Tetrachloroethane
630-20-6
0.33
ug/L
53
1,1,2,2-Tetrachloroethane
79-34-5
0.4
ug/L
54
Tetrachloroethene
127-18-4
0.46
ug/L
55
Toluene
108-88-3
0.26
ug/L
56
1,2,3-Trichlorobenzene
87-61-6
0.33
ug/L
57
1,2,4-Trichlorobenzene
120-82-1
0.35
ug/L
58
1, 1, 1 -Trichloroethane
71-55-6
0.48
ug/L
59
1,1,2-Trichloroethane
79-00-5
0.29
ug/L
60
Trichloroethene
79-01-6
0.47
ug/L
61
Trichlorofluoromethane
75-69-4
0.2
ug/L
62
1,2,3-Trichloropropane
96-18-4
0.41
ug/L
63
1,2,4-Trimethylbenzene
95-63-6
0.31
ug/L
64
1,3,5-Trimethylbenzene
108-67-8
0.36
ug/L
65
Vinyl chloride
75-01-4
0.62
ug/L
66
Xylene (Total)
1330-20-7
1
ug/L
67
m&p-Xylene
179601-23-1
0.66
ug/L
68
o-Xylene
95-47-6
0.23
ug/L
aceAnalytical
vnvw.pacelabsxom
Thursday, December 27, 2018 4:37:50 PM Page 2 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8260 WLL 8260 MSV Low Level
69
1,1,2-Trichlorotrifluoroetha
76-13-1
0.19
ug/L
70
1,4-Dioxane (p-Dioxane)
123-91-1
78.36
ug/L
71
Vinyl acetate
108-05-4
0.35
ug/L
72
Acrylonitrile
107-13-1
1.88
ug/L
73
Iodomethane
74-88-4
0.32
ug/L
74
2-Chloroethylvinyl ether
110-75-8
0.34
ug/L
75
cis-1,4-Dichloro-2-butene
1476-11-5
0.29
ug/L
76
trans-1,4-Dichloro-2-butene
110-57-6
1
ug/L
77
tert-Amylmethyl ether
994-05-8
0.1
ug/L
78
tert-Amyl Alcohol
75-85-4
50
ug/L
79
tert-Butyl Formate
762-75-4
1.89
ug/L
80
3,3-Dimethyl-1-Butanol
624-95-3
50
ug/L
81
Ethyl-tert-butyl ether
637-92-3
0.07
ug/L
82
Acetonitrile
75-05-8
2.21
ug/L
83
Pentachloroethane
76-01-7
50
ug/L
84
TOTAL BTEX
1
ug/L
85
Ethyl acetate
141-78-6
0.48
ug/L
86
Methyl acetate
79-20-9
0.82
ug/L
87
Methylcyclohexane
108-87-2
1.87
ug/L
88
n-Hexane
110-54-3
0.55
ug/L
89
Acrolein
107-02-8
1.59
ug/L
90
Allyl chloride
107-05-1
1.54
ug/L
91
Diethyl ether (Ethyl ether)
60-29-7
0.18
ug/L
92
Tetrahydrofuran
109-99-9
3.12
ug/L
93
Methyl methacrylate
80-62-6
1.96
ug/L
94
Cyclohexane
110-82-7
0.36
ug/L
95
Ethyl methacrylate
97-63-2
0.2
ug/L
96
Isobutanol
78-83-1
35
ug/L
97
Propionitrile
107-12-0
3.65
ug/L
98
Chloroprene
126-99-8
0.27
ug/L
99
Diisopropyl ether
108-20-3
0.12
ug/L
1001,2,3-Trimethylbenzene
526-73-8
0.09
ug/L
101
Ethanol
64-17-5
131
ug/L
102
Methacrylonitrile
126-98-7
0.93
ug/L
aceAnalytical
vnvw.pacelabsxom
Thursday, December 27, 2018 4:37:50 PM Page 3 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8260 WLL 8260 MSV Low Level
aceAnalytical
vnvw.pacelabsxom
Limits Analytical Preparation Sample Instr. Effective Stop
ID Type Matrix Method Method Type Name Date Date Other Criteria
76167 PRL EPA 8260B
2/6/2018
#
Analyte
CAS Number
PRL
Units
1
Acetone
67-64-1
25
ug/L
2
Benzene
71-43-2
1
ug/L
3
Bromobenzene
108-86-1
1
ug/L
4
Bromochloromethane
74-97-5
1
ug/L
5
Bromodichloromethane
75-27-4
1
ug/L
6
Bromoform
75-25-2
1
ug/L
7
Bromomethane
74-83-9
2
ug/L
8
2-Butanone (MEK)
78-93-3
5
ug/L
9
n-Butylbenzene
104-51-8
1
ug/L
10
sec-Butylbenzene
135-98-8
1
ug/L
11
tert-Butylbenzene
98-06-6
1
ug/L
12
tert-Butyl Alcohol
75-65-0
100
ug/L
13
Carbon disulfide
75-15-0
2
ug/L
14
Carbon tetrachloride
56-23-5
1
ug/L
15
Chlorobenzene
108-90-7
1
ug/L
16
Chloroethane
75-00-3
1
ug/L
17
Chloroform
67-66-3
1
ug/L
18
Chloromethane
74-87-3
1
ug/L
19
2-Chlorotoluene
95-49-8
1
ug/L
20
4-Chlorotoluene
106-43-4
1
ug/L
21
1,2-Dibromo-3-chloropropa
96-12-8
2
ug/L
22
Dibromochloromethane
124-48-1
1
ug/L
23
1,2-Dibromoethane (EDB)
106-93-4
1
ug/L
24
Dibromomethane
74-95-3
1
ug/L
25
1,2-Dichlorobenzene
95-50-1
1
ug/L
26
1,3-Dichlorobenzene
541-73-1
1
ug/L
27
1,4-Dichlorobenzene
106-46-7
1
ug/L
28
Dichlorodifluoromethane
75-71-8
1
ug/L
29
1,1-Dichloroethane
75-34-3
1
ug/L
30
1,2-Dichloroethane
107-06-2
1
ug/L
31
1,2-Dichloroethene (Total)
540-59-0
1
ug/L
32
1,1-Dichloroethene
75-35-4
1
ug/L
Thursday, December 27, 2018 4:37:50 PM Page 4 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8260 WLL 8260 MSV Low Level
33
cis-1,2-Dichloroethene
156-59-2
1
ug/L
34
trans-1,2-Dichloroethene
156-60-5
1
ug/L
35
1,2-Dichloropropane
78-87-5
1
ug/L
36
1,3-Dichloropropane
142-28-9
1
ug/L
37
2,2-Dichloropropane
594-20-7
1
ug/L
38
1, 1 -Dichloropropene
563-58-6
1
ug/L
39
cis-1,3-Dichloropropene
10061-01-5
1
ug/L
40
trans-1,3-Dichloropropene
10061-02-6
1
ug/L
41
Ethylbenzene
100-41-4
1
ug/L
42
Hexachloro-1,3-butadiene
87-68-3
1
ug/L
43
2-Hexanone
591-78-6
5
ug/L
44
Isopropylbenzene (Cumene)
98-82-8
1
ug/L
45
p-Isopropyltoluene
99-87-6
1
ug/L
46
Methylene Chloride
75-09-2
2
ug/L
47
4-Methyl-2-pentanone
108-10-1
5
ug/L
48
Methyl-tert-butyl ether
1634-04-4
1
ug/L
49
Naphthalene
91-20-3
1
ug/L
50
n-Propylbenzene
103-65-1
1
ug/L
51
Styrene
100-42-5
1
ug/L
52
1, 1, 1,2-Tetrachloroethane
630-20-6
1
ug/L
53
1,1,2,2-Tetrachloroethane
79-34-5
1
ug/L
54
Tetrachloroethene
127-18-4
1
ug/L
55
Toluene
108-88-3
1
ug/L
56
1,2,3-Trichlorobenzene
87-61-6
1
ug/L
57
1,2,4-Trichlorobenzene
120-82-1
1
ug/L
58
1, 1, 1 -Trichloroethane
71-55-6
1
ug/L
59
1,1,2-Trichloroethane
79-00-5
1
ug/L
60
Trichloroethene
79-01-6
1
ug/L
61
Trichlorofluoromethane
75-69-4
1
ug/L
62
1,2,3-Trichloropropane
96-18-4
1
ug/L
63
1,2,4-Trimethylbenzene
95-63-6
1
ug/L
64
1,3,5-Trimethylbenzene
108-67-8
1
ug/L
65
Vinyl chloride
75-01-4
1
ug/L
66
Xylene (Total)
1330-20-7
1
ug/L
67
m&p-Xylene
179601-23-1
2
ug/L
68
o-Xylene
95-47-6
1
ug/L
aceAnalytical
vnvw.pacelabsxom
Thursday, December 27, 2018 4:37:50 PM Page 5 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8260 WLL 8260 MSV Low Level
69
1,1,2-Trichlorotrifluoroetha
76-13-1
1
ug/L
70
1,4-Dioxane (p-Dioxane)
123-91-1
150
ug/L
71
Vinyl acetate
108-05-4
2
ug/L
72
Acrylonitrile
107-13-1
10
ug/L
73
Iodomethane
74-88-4
5
ug/L
74
2-Chloroethylvinyl ether
110-75-8
10
ug/L
75
cis-1,4-Dichloro-2-butene
1476-11-5
1
ug/L
76
trans-1,4-Dichloro-2-butene
110-57-6
1
ug/L
77
tert-Amylmethyl ether
994-05-8
10
ug/L
78
tert-Amyl Alcohol
75-85-4
100
ug/L
79
tert-Butyl Formate
762-75-4
50
ug/L
80
3,3-Dimethyl-1-Butanol
624-95-3
100
ug/L
81
Ethyl-tert-butyl ether
637-92-3
10
ug/L
82
Acetonitrile
75-05-8
50
ug/L
83
Pentachloroethane
76-01-7
50
ug/L
84
TOTAL BTEX
1
ug/L
85
Ethyl acetate
141-78-6
20
ug/L
86
Methyl acetate
79-20-9
10
ug/L
87
Methylcyclohexane
108-87-2
10
ug/L
88
n-Hexane
110-54-3
1
ug/L
89
Acrolein
107-02-8
10
ug/L
90
Allyl chloride
107-05-1
2
ug/L
91
Diethyl ether (Ethyl ether)
60-29-7
1
ug/L
92
Tetrahydrofuran
109-99-9
10
ug/L
93
Methyl methacrylate
80-62-6
2
ug/L
94
Cyclohexane
110-82-7
1
ug/L
95
Ethyl methacrylate
97-63-2
1
ug/L
96
Isobutanol
78-83-1
100
ug/L
97
Propionitrile
107-12-0
20
ug/L
98
Chloroprene
126-99-8
5
ug/L
99
Diisopropyl ether
108-20-3
1
ug/L
100
1,2,3-Trimethylbenzene
526-73-8
1
ug/L
101
Ethanol
64-17-5
200
ug/L
102
Methacrylonitrile
126-98-7
10
ug/L
aceAnalytical
vnvw.pacelabsxom
Thursday, December 27, 2018 4:37:50 PM Page 6 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8270RV
8270 RVE
aceAnalytical
vnvw.pacelabsxom
Limits Analytical Preparation Sample Instr. Effective Stop
ID Type Matrix Method Method Type Name Date Date Other Criteria
76125 MDL Water EPA 8270D EPA 3510C
1/11/2018 1/11/2019
#
Analyte
CAS Number
MDL
Units
1
Phenol
108-95-2
2.701
ug/L
2
bis(2-Chloroethyl) ether
111-44-4
3.071
ug/L
3
2-Chlorophenol
95-57-8
2.904
ug/L
4
1,3-Dichlorobenzene
541-73-1
3.199
ug/L
5
1,4-Dichlorobenzene
106-46-7
2.564
ug/L
6
Benzyl alcohol
100-51-6
7.011
ug/L
7
1,2-Dichlorobenzene
95-50-1
3.23
ug/L
8
2-Methylphenol(o-Cresol)
95-48-7
3.595
ug/L
9
3&4-Methylphenol(m&p
15831-10-4
2.38
ug/L
10
N-Nitroso-di-n-propylamine
621-64-7
2.615
ug/L
11
Hexachloroethane
67-72-1
3.994
ug/L
12
Nitrobenzene
98-95-3
3.401
ug/L
13
Isophorone
78-59-1
2.747
ug/L
14
2-Nitrophenol
88-75-5
2.597
ug/L
15
2,4-Dimethylphenol
105-67-9
1.896
ug/L
16
Benzoic Acid
65-85-0
17.26
ug/L
17
bis(2-Chloroethoxy)methan
111-91-1
2.978
ug/L
18
2,4-Dichlorophenol
120-83-2
2.726
ug/L
19
1,2,4-Trichlorobenzene
120-82-1
2.57
ug/L
20
Naphthalene
91-20-3
3.238
ug/L
21
4-Chloroaniline
106-47-8
6.771
ug/L
22
Hexachloro-1,3-butadiene
87-68-3
3.119
ug/L
23
4-Chloro-3-methylphenol
59-50-7
4.597
ug/L
24
2-Methylnaphthalene
91-57-6
2.83
ug/L
25
Hexachlorocyclopentadiene
77-47-4
3.35
ug/L
26
2,4,6-Trichlorophenol
88-06-2
2.82
ug/L
27
2,4,5-Trichlorophenol
95-95-4
2.332
ug/L
28
2-Chloronaphthalene
91-58-7
2.941
ug/L
29
2-Nitroaniline
88-74-4
5.462
ug/L
30
Dimethylphthalate
131-11-3
2.316
ug/L
31
Acenaphthylene
208-96-8
2.981
ug/L
32
2,6-Dinitrotoluene
606-20-2
2.92
ug/L
Thursday, December 27, 2018 4:39:02 PM Page 1 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8270RV 8270 RVE
33
3-Nitroaniline
99-09-2
5.017
ug/L
34
Acenaphthene
83-32-9
3.386
ug/L
35
2,4-Dinitrophenol
51-28-5
10.119
ug/L
36
4-Nitrophenol
100-02-7
7.841
ug/L
37
Dibenzofuran
132-64-9
3.373
ug/L
38
2,4-Dinitrotoluene
121-14-2
2.395
ug/L
39
Diethylphthalate
84-66-2
1.996
ug/L
40
4-Chlorophenylphenyl ether
7005-72-3
2.877
ug/L
41
Fluorene
86-73-7
2.966
ug/L
42
4-Nitroaniline
100-01-6
3.647
ug/L
43
4,6-Dinitro-2-methylphenol
534-52-1
4.351
ug/L
44
N-Nitrosodiphenylamine
86-30-6
2.039
ug/L
45
4-Bromophenylphenyl ether
101-55-3
2.652
ug/L
46
Hexachlorobenzene
118-74-1
2.458
ug/L
47
Pentachlorophenol
87-86-5
3.085
ug/L
48
Phenanthrene
85-01-8
2.373
ug/L
49
Anthracene
120-12-7
2.018
ug/L
50
Di-n-butylphthalate
84-74-2
1.236
ug/L
51
Fluoranthene
206-44-0
1.68
ug/L
52
Pyrene
129-00-0
1.217
ug/L
53
Butylbenzylphthalate
85-68-7
1.345
ug/L
54
3,3'-Dichlorobenzidine
91-94-1
2.75
ug/L
55
Benzo(a)anthracene
56-55-3
1.341
ug/L
56
Chrysene
218-01-9
1.247
ug/L
57
bis(2-Ethylhexyl)phthalate
117-81-7
1.388
ug/L
58
Di-n-octylphthalate
117-84-0
1.226
ug/L
59
Benzo(b)fluoranthene
205-99-2
1.461
ug/L
60
Benzo(k)fluoranthene
207-08-9
1.822
ug/L
61
Benzo(a)pyrene
50-32-8
1.325
ug/L
62
Indeno(1,2,3-cd)pyrene
193-39-5
1.693
ug/L
63
Dibenz(a,h)anthracene
53-70-3
1.905
ug/L
64
Benzo(g,h,i)perylene
191-24-2
1.813
ug/L
65
Pyridine
110-86-1
2.918
ug/L
66
N-Nitrosodimethylamine
62-75-9
2.801
ug/L
67
Azobenzene
103-33-3
2.818
ug/L
68
Carbazole
86-74-8
1.427
ug/L
aceAnalytical
vnvw.pacelabsxom
Thursday, December 27, 2018 4:39:02 PM Page 2 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8270RV 8270 RVE
69
1-Methylnaphthalene
90-12-0
2.809
ug/L
70
Benzidine
92-87-5
2.928
ug/L
71
Terpineol
98-55-5
2.938
ug/L
72
Acetophenone
98-86-2
4.32
ug/L
73
Biphenyl (Diphenyl)
92-52-4
3.659
ug/L
74
2,2'-Oxybis(l-chloropropan
108-60-1
2.476
ug/L
75
Aniline
62-53-3
3.063
ug/L
76
n-Decane
124-18-5
2.943
ug/L
77
n-Octadecane
593-45-3
2.761
ug/L
78
2,3,4,6-Tetrachlorophenol
58-90-2
1.958
ug/L
79
Diphenyl ether (Phenyl
101-84-8
3.304
ug/L
80
1,2-Diphenylhydrazine
122-66-7
2.818
ug/L
81
Diphenylamine
122-39-4
2.039
ug/L
aceAnalytical
vnvw.pacelabsxom
Thursday, December 27, 2018 4:39:02 PM Page 3 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8270RV
8270 RVE
aceAnalytical
vnvw.pacelabsxom
Limits Analytical Preparation Sample Instr. Effective Stop
ID Type Matrix Method Method Type Name Date Date Other Criteria
76124 PRL EPA 8270D EPA 3510C
1/11/2018
#
Analyte
CAS Number
PRL
Units
1
Phenol
108-95-2
10
ug/L
2
bis(2-Chloroethyl) ether
111-44-4
10
ug/L
3
2-Chlorophenol
95-57-8
10
ug/L
4
1,3-Dichlorobenzene
541-73-1
10
ug/L
5
1,4-Dichlorobenzene
106-46-7
10
ug/L
6
Benzyl alcohol
100-51-6
20
ug/L
7
1,2-Dichlorobenzene
95-50-1
10
ug/L
8
2-Methylphenol(o-Cresol)
95-48-7
10
ug/L
9
3&4-Methylphenol(m&p
15831-10-4
10
ug/L
10
N-Nitroso-di-n-propylamine
621-64-7
10
ug/L
11
Hexachloroethane
67-72-1
10
ug/L
12
Nitrobenzene
98-95-3
10
ug/L
13
Isophorone
78-59-1
10
ug/L
14
2-Nitrophenol
88-75-5
10
ug/L
15
2,4-Dimethylphenol
105-67-9
10
ug/L
16
Benzoic Acid
65-85-0
50
ug/L
17
bis(2-Chloroethoxy)methan
111-91-1
10
ug/L
18
2,4-Dichlorophenol
120-83-2
10
ug/L
19
1,2,4-Trichlorobenzene
120-82-1
10
ug/L
20
Naphthalene
91-20-3
10
ug/L
21
4-Chloroaniline
106-47-8
20
ug/L
22
Hexachloro-1,3-butadiene
87-68-3
10
ug/L
23
4-Chloro-3-methylphenol
59-50-7
20
ug/L
24
2-Methylnaphthalene
91-57-6
10
ug/L
25
Hexachlorocyclopentadiene
77-47-4
10
ug/L
26
2,4,6-Trichlorophenol
88-06-2
10
ug/L
27
2,4,5-Trichlorophenol
95-95-4
10
ug/L
28
2-Chloronaphthalene
91-58-7
10
ug/L
29
2-Nitroaniline
88-74-4
50
ug/L
30
Dimethylphthalate
131-11-3
10
ug/L
31
Acenaphthylene
208-96-8
10
ug/L
32
2,6-Dinitrotoluene
606-20-2
10
ug/L
Thursday, December 27, 2018 4:39:03 PM Page 4 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8270RV 8270 RVE
33
3-Nitroaniline
99-09-2
50
ug/L
34
Acenaphthene
83-32-9
10
ug/L
35
2,4-Dinitrophenol
51-28-5
50
ug/L
36
4-Nitrophenol
100-02-7
50
ug/L
37
Dibenzofuran
132-64-9
10
ug/L
38
2,4-Dinitrotoluene
121-14-2
10
ug/L
39
Diethylphthalate
84-66-2
10
ug/L
40
4-Chlorophenylphenyl ether
7005-72-3
10
ug/L
41
Fluorene
86-73-7
10
ug/L
42
4-Nitroaniline
100-01-6
20
ug/L
43
4,6-Dinitro-2-methylphenol
534-52-1
20
ug/L
44
N-Nitrosodiphenylamine
86-30-6
10
ug/L
45
4-Bromophenylphenyl ether
101-55-3
10
ug/L
46
Hexachlorobenzene
118-74-1
10
ug/L
47
Pentachlorophenol
87-86-5
25
ug/L
48
Phenanthrene
85-01-8
10
ug/L
49
Anthracene
120-12-7
10
ug/L
50
Di-n-butylphthalate
84-74-2
10
ug/L
51
Fluoranthene
206-44-0
10
ug/L
52
Pyrene
129-00-0
10
ug/L
53
Butylbenzylphthalate
85-68-7
10
ug/L
54
3,3'-Dichlorobenzidine
91-94-1
20
ug/L
55
Benzo(a)anthracene
56-55-3
10
ug/L
56
Chrysene
218-01-9
10
ug/L
57
bis(2-Ethylhexyl)phthalate
117-81-7
6
ug/L
58
Di-n-octylphthalate
117-84-0
10
ug/L
59
Benzo(b)fluoranthene
205-99-2
10
ug/L
60
Benzo(k)fluoranthene
207-08-9
10
ug/L
61
Benzo(a)pyrene
50-32-8
10
ug/L
62
Indeno(1,2,3-cd)pyrene
193-39-5
10
ug/L
63
Dibenz(a,h)anthracene
53-70-3
10
ug/L
64
Benzo(g,h,i)perylene
191-24-2
10
ug/L
65
Pyridine
110-86-1
10
ug/L
66
N-Nitrosodimethylamine
62-75-9
10
ug/L
67
Azobenzene
103-33-3
10
ug/L
68
Carbazole
86-74-8
10
ug/L
aceAnalytical
vnvw.pacelabsxom
Thursday, December 27, 2018 4:39:03 PM Page 5 of 6

Detection Limits
PASI Charlotte Laboratory
For Acode: 8270RV 8270 RVE
69
1-Methylnaphthalene
90-12-0
10
ug/L
70
Benzidine
92-87-5
50
ug/L
71
Terpineol
98-55-5
10
ug/L
72
Acetophenone
98-86-2
10
ug/L
73
Biphenyl (Diphenyl)
92-52-4
10
ug/L
74
2,2'-Oxybis(l-chloropropan
108-60-1
10
ug/L
75
Aniline
62-53-3
10
ug/L
76
n-Decane
124-18-5
10
ug/L
77
n-Octadecane
593-45-3
10
ug/L
78
2,3,4,6-Tetrachlorophenol
58-90-2
10
ug/L
79
Diphenyl ether (Phenyl
101-84-8
10
ug/L
80
1,2-Diphenylhydrazine
122-66-7
10
ug/L
81
Diphenylamine
122-39-4
10
ug/L
aceAnalytical
vnvw.pacelabsxom
Thursday, December 27, 2018 4:39:03 PM Page 6 of 6

ace/lnalytical
Pace Analytical Services, LLC
Method Detection Limits and Reporting Limits
by EPA T015
LCS I DUP
Analyte
CAS #
MDL (ppbv)
PRL (ppbv)
MW
MDL (ug/m3)
PRL (ug/m3)
Lower
Upper
RPD
1,1,1-Trichloroethane
71-55-6
0.0558
0.2
133.4047
0.309
1.11
70
135
25
1,1,2,2-Tetrachloroethane
79-34-5
0.0419
0.1
167.8498
0.292
0.698
70
146
25
1,1,2-Trichloroethane
79-00-5
0.0452
0.1
133.4047
0.250
0.555
70
135
25
1,1,2-TrichlorotrifIuoroethane
76-13-1
0.0724
0.2
187.3762
0.564
1.56
63
139
25
1,1-Dichloroethane
75-34-3
0.0546
0.2
98.9596
0.225
0.823
70
134
25
1,1-Dichloroethene
75-35-4
0.0679
0.2
96.9438
0.274
0.806
70
137
25
1,2,4-Trichlorobenzene
120-82-1
0.493
1
181.4487
3.72
7.54
60
133
25
1,2,4-Trimeth (benzene
95-63-6
0.0904
0.2
120.1938
1 0.452
0.999
70
1 137
25
1,2-Dibromoethane
106-93-4
0.0468
0.1
187.8616
0.366
0.781
70
140
25
1,2-Dichlorobenzene
95-50-1
0.0814
0.2
147.0036
0.498
1.22
70
137
25
1,2-Dichloroethane
107-06-2
0.0365
0.1
98.9596
0.150
0.411
70
136
25
1,2-Dichloropropane
78-87-5
0.0490
0.2
112.9864
0.230
0.939
70
136
25
1,3,5-Trimethylbenzene
108-67-8
0.0798
0.2
120.1938
0.399
0.999
70
133
25
1,3-Butadiene
106-99-0
0.0567
0.2
54.0914
0.128
0.450
64
141
25
1,3-Dichlorobenzene
541-73-1
0.0951
0.2
147.0036
0.581
1.22
70
137
25
1,4-Dichlorobenzene
106-46-7
0.164
0.5
147.0036
1.00
3.06
70
134
25
2-Butanone (MEK)
78-93-3
0.123
1
72.1057
0.369
3.00
65
143
25
2-Hexanone
591-78-6
0.179
1
100.1589
0.745
4.16
60
148
25
2-Propanol
67-63-0
0.279
1
60.1
0.697
2.50
65
135
25
4-Ethyltoluene
622-96-8
0.114
0.5
120.1938
0.570
2.50
70
132
25
4-Methyl-2-pentanone (MIBK)
108-10-1
0.124
1
100.1602
0.518
4.16
70
135
25
Acetone
67-64-1
0.499
1
58.0798
1.21
2.41
59
132
25
Benzene
71-43-2
0.0471
0.1
78.1134
0.153
0.325
70
134
25
Benzyl Chloride
100-44-7
0.228
0.5
126.58
1.20
2.63
56
150
25
Bromodichloromethane
75-27-4
0.0537
0.2
163.8289
0.366
1.36
70
142
25
Bromoform
75-25-2
0.135
0.5
252.7309
1.42
5.25
69
150
25
Bromomethane
74-83-9
0.0575
0.2
94.9387
0.227
0.789
61
141
25
Carbon Disulfide
75-15-0
0.0692
0.2
76.131
0.219
0.633
66
134
25
Carbon tetrachloride
56-23-5
0.0671
0.2
153.823
0.429
1.28
60
145
25
Chlorobenzene
108-90-7
0.0588
0.2
112.5585
0.275
0.936
70
130
25
Chloroethane
75-00-3
0.0969
0.2
64.5145
0.260
0.536
65
143
25
Pace Analytical Services, LLC 612-607-1700
KL 8/2/18 1700 Elm Street SE, Suite 200 Minneapolis, MN 55414 www.pacelabs.com

ace/lnalytical
Pace Analytical Services, LLC
Method Detection Limits and Reporting Limits
by EPA T015
LCS I DUP
Analyte
CAS #
PRL (ppbv)
MW
MDL (ug/m3)
PRL (ug/m3)
Lower
Upper
RPD
Chloroform
67-66-3
0.0395
0.1
119.3779
0.196
0.496
70
132
25
Chloromethane
74-87-3
0.0742
0.2
50.4877
0.156
0.420
58
140
25
cis-1,2-Dichloroethene
156-59-2
0.0543
0.2
96.9438
0.219
0.806
70
136
25
cis-1,3-Dichloropropene
10061-01-5
0.0659
0.2
110.9706
0.304
0.923
70
136
25
Cyclohexane
110-82-7
0.101
0.5
84.1608
0.353
1.75
70
133
25
Dibromochloromethane
124-48-1
0.0830
0.2
208.2799
0.719
1.73
68
149
25
Dichlorodifluoromethane
75-71-8
0.0584
0.2
120.9138
0.293
1.01
69
130
25
DichlorotetrafIuoroethane
76-14-2
0.0615
0.2
170.9216
0.437
1.42
68
130
25
Ethanol
64-17-5
0.424
1
46.07
0.812
1.92
65
146
25
Ethyl Acetate
141-78-6
0.0518
0.2
88.106
0.190
0.733
68
136
25
Ethyl Benzene
100-41-4
0.0690
0.2
106.167
0.305
0.883
70
133
25
Hexachlorobutadiene
87-68-3
0.181
0.5
260.762
1.967
5.42
59
140
25
m&p-Xylene
106-42-3
0.158
0.4
106.167
0.699
1.77
70
133
25
Methyl Tert Butyl Ether
1634-04-4
0.181
1
88.1492
0.663
3.66
70
132
25
Methylene chloride
75-0902
0.267
1
84.9328
0.944
3.53
67
132
25
Naphthalene
91-20-3
0.248
0.5
128.1732
1.32
2.66
55
136
25
n-Heptane
142-82-5
0.0913
0.2
100.2034
0.380
0.833
64
136
25
n-Hexane
110-54-3
0.0867
0.2
86.1766
0.311
0.716
70
130
25
o-Xylene
95-47-6
0.0780
0.2
106.167
0.344
0.883
70
132
25
Propylene
115-07-1
0.0816
0.2
42.0804
0.143
0.350
37
150
25
Styrene
100-42-5
0.0794
0.2
104.1512
0.344
0.866
70
139
25
Tetrachloroethene
127-18-4
0.0455
0.1
165.834
0.314
0.689
70
133
25
Tetrahydrofuran
109-99-9
0.0870
0.2
72.1066
0.261
0.600
62
141
25
Toluene
108-88-3
0.0916
0.2
92.1402
0.351
0.766
70
130
25
trans-1,2-dichloroethene
156-60-5
0.0706
0.2
96.9438
0.285
0.806
70
132
25
trans-1,3-Dichloropropene
10061-02-6
0.0953
0.2
110.9706
0.440
0.923
70
135
25
Trichloroethene
79-01-6
0.0470
0.1
131.3889
0.257
0.546
70
135
25
Trichlorofluoromethane
75-69-4
0.0641
0.2
137.3684
0.366
1.14
59
140
25
Vinyl Acetate
108-05-4
0.0754
0.2
86.0902
0.270
0.716
57
150
25
Vinyl chloride
75-01-4
0.0485
0.1
62.4987
0.126
0.260
70
141
25
Pace Analytical Services, LLC 612-607-1700
KL 8/2/18 1700 Elm Street SE, Suite 200 Minneapolis, MN 55414 www.pacelabs.com

ace/lnalytical
Pace Analytical Services, LLC
Method Detection Limits and Reporting Limits
by EPA T015
EXTRA ANALYTES (available upon request at an additional cost)
LCS I DUP
Analyte
CAS #
PRL (ppbv)
MW
MDL (ug/m3)
PRL (ug/m3)
Lower
Upper
RPD
1,2,3-Trimethylbenzene
526-73-8
0.0807
0.2
120.19
0.403
0.999
69
150
25
1,4-Dioxane
123-91-1
0.205
1
88.1051
0.751
3.66
70
145
25
2,2,4-Trimethylpentane
540-84-1
0.145
0.5
114.22
0.689
2.37
70
140
25
Acrolein
107-02-8
0.237
0.5
56.06
0.553
1.17
65
150
25
Acrylonitrile
107-13-1
0.145
0.5
53.06
0.320
1.10
64
142
25
Allyl Chloride
107-05-1
0.234
0.5
76.525
0.744
1.59
60
147
25
Chlorodifluoromethane
75-45-6
0.184
0.5
86.47
0.662
1.80
68
142
25
Di -isopropyl Ether
108-20-3
0.0795
1
102.1748
0.338
4.25
70
136
25
Ethyl Tert-Butyl Ether
637-92-3
0.175
1
102.1748
0.741
4.25
70
136
25
Isopentane
78-78-4
0.0997
0.5
72.15
0.299
1.50
44
150
25
Isopropylbenzene
98-82-8
0.0762
0.5
120.194
0.381
2.50
70
133
25
Methyl Methacrylate
80-62-6
0.0951
0.2
100.12
0.396
0.832
47
150
25
Methylcyclohexane
108-87-2
0.0950
0.5
98.186
0.388
2.04
70
137
25
N-Butylbenzene
104-51-8
0.201
0.5
134.2206
1.12
2.79
70
148
25
N-Propylbenzene
103-65-1
0.0805
0.5
120.1938
0.402
2.50
70
145
25
p-Isopropyltoluene
99-87-6
0.0922
0.2
134.22
0.515
1.12
70
143
25
Sec- Butylbenzene
135-98-8
0.155
0.5
134.2206
0.866
2.79
70
142
25
Tert Amyl Methyl Ether
994-05-8
0.243
1
102.1748
1.03
4.25
70
135
25
Tert Butyl Alcohol (TBA)
75-65-0
0.326
1
74.12
1.00
3.08
63
143
25
Tert-Butyl Benzene
98-06-6
0.0959
0.2
134.22
0.535
1.12
70
142
25
Vinyl Bromide
593-60-2
0.0810
0.2
106.95
0.360
0.889
70
140
25
THC as Gas (C4-C12)
11.95
23.9
51.9
104
59
150
25
Xylene (Total)
1330-20-7
0.1583
0.6
106.17
0.699
2.65
70
138
25
Surrogates
1,4-Dichlorobenzene-d4 (S)
3855-82-1
30
150
Hexane-d14 (S)
21666-38-6
30
150
Toluene-d8 (S)
2037-26-5
30
150
Highlighted cells are calculated results
Pace Analytical Services, LLC 612-607-1700
KL 8/2/18 1700 Elm Street SE, Suite 200 Minneapolis, MN 55414 www.pacelabs.com