MO-6731_27502_CA_MRP_20181126_Monitoring Rpt

Excel Civil & Environmental Associates, PLLC
625 Huntsman Court
Gastonia, North Carolina 28054
NC License No. P-0129
Telephone: [phone]
Facsimile: [phone]
Internet: www.excelenar.com
November 26, 2018
Ms. Trudy Beverly, L.G.
NCDEQ / MRO / DWM
610 East Center Avenue
Mooresville, North Carolina 28115
Re: Monitoring Report
(Former) SERVCO No. 00311
24 North Church Street
Concord, North Carolina
Risk Classification: High (H155)
Land Use: Residential
MO-6731_27502_CA_ 20181125_Monitoring_Report
EXCEL Project No. 23056
Dear Ms. Beverly:
Excel Civil & Environmental Associates, PLLC (Excel) on behalf of Service Distributing
Company, Incorporated (Servco) is pleased to submit a copy of the Monitoring Report
for your approval.
If you have any comments, please do not hesitate to contact me at 704.853.0800.
Sincerely yours,
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
M.T. Stanforth, P.E., DEE
Project Engineer
p.c. Robert Gresham — SERVCO, Albemarle, NC
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

MONITORING REPORT
(FORMER) SERVCO No. 00311
24 NORTH CHURCH STREET
CONCORD, CABARRUS COUNTY, NORTH CAROLINA
NCDEQ INCIDENT No. 27502
EXCEL PROJECT NO. 23056
MO-6731_27502_CA 20181125_Monitoring_Report
LATITUDE = 35024'44" (N) / LONGITUDE = 80034'51" (W)
Source of Release
Former Gasoline UST System — Amount Unknown
Date submitted
November 26, 2018
Prepared for
Service Distributing Company, Incorporated
Responsible Party
1024 North Second Street
Albemarle, North Carolina 28001
Attn: Robert Gresham
Prepared by
Excel Civil & Environmental Associates, PLLC
625 Huntsman Court
Gastonia, North Carolina 28054
NC License No. P-0129
ecea
Excel Civil &Environmental Associates
Duality - Feliabillty - Integrity - Sustainablity
www.excelenqr.com
Michael T. Stanforth, P.E., DEE
Principal Engineer

Monitoring Report November 26, 2018
(Former) SERVCO No. 00311 Incident No. 27502
Concord, North Carolina Excel No. 23056
PROJECT SUMMARY
Groundwater quality samples were collected from nine monitor wells on November 6, 2018,
and laboratory analyzed for volatile organics by EPA Method 6200B. It is Excel's standard
operating procedure not to gauge monitoring wells with an oil -water interface probe prior to
sampling if said well has not historically shown free product. Static water levels were
collected with a decontaminated water level indicator at locations where free product has not
previously been encountered.
The results of the laboratory data indicate that the groundwater samples collected from
monitoring wells MW-8, MW-9 and MW-10R were above NCAC 2L standards for benzene
and that samples collected from monitoring well MW-10R exceeded the NCAC 2B standard
for benzene and toluene. The laboratory analysis further indicates NCAC 2L standards for
ethylbenzene and total xylenes were exceeded in the groundwater sample collected from
MW-1OR and for naphthalene in the groundwater samples collected from MW-8 and MW-
10R. MTBE exceeded NCAC 2L standards in the groundwater samples collected from MW-
9 and MW-1OR; and PCE exceeded the NCAC 2L standard in samples collected from MW-
1, MW-2, MW-4, MW-5, MW-7 and MW-9. None of the groundwater samples collected
indicated any constituents exceeding Gross Contamination Levels (GCLs). No free product
was measured in the gauged monitoring wells during the November 2018 sampling event.
Review of the current liquid level data indicates that the predominant groundwater flow at
the site is in a northeasterly direction.
Based on previous receptor surveys completed by ECEA, there is one water supply well
utilized for irrigation purposes only and located approximately 170 feet upgradient of the
release source area. A review of the USGS topographic map indicates the closest surface
water body appears to be an unnamed tributary of Three Mile Branch located approximately
500 feet north of the subject property. It appears the surface water is classified as class "C"
surface water. Based on the presence of the irrigation well located within 250 feet of the
source area, the site is ranked as a "High" risk site.
■ The soil and groundwater remediation system, consisting of a soil vapor extraction and air
sparge system was started on June 28, 2010. The system was operational after belts were
installed during the July and August site visits. Based on the TA dated September 13, 2018
Excel shut the system down on September 27, 2018. The system was off during the
November 2018 sampling event.
PLUME STABILITY EVALUATION
Excel conducted a Mann -Kendall constituent trend analysis (Appendix D) which relies on
three statistical metrics, an "S" statistic which indicates whether concentration trend vs. time
is generally decreasing or increasing; a confidence factor (CF) which modifies the S statistic
to indicate the degree of confidence in the trend result; and a coefficient of variation (COV)
to distinguish describe the variability in the data set. The analysis included an evaluation of
both the overall reductions in the areal extent and plume length for constituents of concern
as well as an evaluation of the stability of the plume constituent concentrations for monitor
wells in the core and leading edge of the plume.
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

Monitoring Report November 26, 2018
(Former) SERVCO No. 00311 Incident No. 27502
Concord, North Carolina Excel No. 23056
The results of the concentrations evaluation for benzene (MW-1, MW-2, MW-5, MW-8, MW-
9 and MW-10R), for MTBE (MW-1, MW-2, MW-5, MW-9, MW-10R and MW-12), for
naphthalene (MW-8, MW-9, and MW-10R), and for toluene, ethylbenzene, and xylenes
(MW-8 and MW-1 OR) indicated the following:
Benzene, MTBE, toluene, and total xylenes concentration trends for all wells
evaluated continue to indicate decreasing trendlines;
Naphthalene concentration trends for MW-8 and MW-9 continue to indicate
decreasing trendlines and for MW-1OR are stable; and
Ethylbenzene concentration trends for MW-8 continue to indicate decreasing
trendlines and for MW-10R are probably decreasing.
A review of the results indicates a consistent and continued reduction in the constituents of
concern with no significant rebound after active system shutdown.
RISK TO POTENTIAL RECEPTORS
Based on previous receptor surveys completed by ECEA, there is one water supply well
utilized for irrigation purposes only and located approximately 170 feet upgradient of the
release source area. A review of the USGS topographic map indicates the closest surface
water body appears to be an unnamed tributary of Three Mile Branch located approximately
500 feet north of the subject property. It appears the surface water is classified as class "C"
surface water. Based on the presence of the irrigation well located within 250 feet of the
source area, the site is ranked as a "High" risk site.
Groundwater flow direction in the shallow aquifer is consistently in the northeasterly
direction; the irrigation well is located upgradient of the source area and does not appear to
be threatened at this time.
To evaluate a risk to surface water, ECEA completed a groundwater flow model on
constituents benzene and toluene that exceeded applicable NCAC 2B standards.
The one-dimensional groundwater transport and degradation model B101 D was utilized to
predict benzene concentrations after the period of active remediation conducted at the site.
The model utilized by Borden, et. al., 1984 was chosen to incorporate aerobic degradation
that is expected to occur. Initial input parameters are as follows:
=> Initial benzene concentration of 1,470 ppb
=> Run the simulation at 2,000 days
=> Utilize 31 nodes, 10 foot each for 100 feet, 15 foot each 75 feet, 20 foot each for 200 feet,
30 foot each for 90 feet, 10 foot each for 20 feet; total length of 500 ft
=> Effective porosity of 0.4
=> Aerobic microbial mass density of 0.007 mg/I
=> Maximum substrate rate per unit mass organisms of 0.87/day
=> Interstitial velocity of 0.0055 ft/day (from CSA dated 7/9/04)
=> Initial dissolved oxygen concentration of 2.5 mg/I
=> Dispersion coefficient of 1 ft2/day
=> Annual rainfall is generally sufficient to recharge the aquifer with oxygenated water.
=> The climate is sufficiently warm to allow for significant bioremediation.
=> The constituents are soluble in water (Table A-3) and no free product is known to exist.
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

Monitoring Report November 26, 2018
(Former) SERVCO No. 00311 Incident No. 27502
Concord, North Carolina Excel No. 23056
=> Based on vapor pressures and Henry's Law constants, the constituents are not highly
volatile. Significant off gassing is not anticipated.
=> The petroleum hydrocarbon constituents detected at the site appear generally
biodegradable (Table A-4).
Initial Benzene concentration of 1,470 ppb resulted in a degradation to less than 510 ppb
(NCAC 10 x 2B levels) in approximately 70 feet travel distance. Dissolved oxygen
concentrations maintain between 0.1 and 2.6 mg/I throughout the run profile.
See attached Figure A-1 for the output graph for Benzene from Biol D.
B101 D was also utilized to predict toluene concentrations after the period of active
remediation conducted at the site. The model utilized by Borden, et. al., 1984 was chosen
to incorporate aerobic degradation that is expected to occur. Initial input parameters are as
follows:
=> Initial Toluene concentration of 422 ppb
=> Run the simulation at 2,000 days
=> Utilize 31 nodes, 10 foot each for 100 feet, 15 foot each 75 feet, 20 foot each for 200 feet,
30 foot each for 90 feet, 10 foot each for 20 feet; total length of 500 ft
=> Effective porosity of 0.4
=> Aerobic microbial mass density of 0.007 mg/I
=> Maximum substrate rate per unit mass organisms of 0.87/day
=> Interstitial velocity of 0.0055 ft/day (from CSA dated 7/9/04)
=> Initial dissolved oxygen concentration of 2.5 mg/I
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

Monitoring Report November 26, 2018
(Former) SERVCO No. 00311 Incident No. 27502
Concord, North Carolina Excel No. 23056
=> Dispersion coefficient of 1 ft2/day
=> Annual rainfall is generally sufficient to recharge the aquifer with oxygenated water.
=> The climate is sufficiently warm to allow for significant bioremediation.
=> The constituents are soluble in water (Table A-3) and no free product is known to exist.
=> Based on vapor pressures and Henry's Law constants, the constituents are not highly
volatile. Significant off gassing is not anticipated.
=> The petroleum hydrocarbon constituents detected at the site appear generally
biodegradable (Table A-4).
Initial Toluene concentration of 422 ppb resulted in a degradation to less than 110 ppb
(NCAC 10 x 2B levels) in approximately 80 feet travel distance.
See attached Figure A-2 for the output graph for toluene from Bio1 D.
FIGURE A-2
Servco Concord Bio1 D Output Toluene 0) 2000 Days
Based on a review of the model output and historical concentration trends at the site, the
surface water body does not appear to be threatened at this time. Please refer to July 2018
Monitoring Report for further modeling analyses.
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

Monitoring Report November 26, 2018
(Former) SERVCO No. 00311 Incident No. 27502
Concord, North Carolina Excel No. 23056
CONCLUSIONS & RECOMMENDATIONS
■ In summary, current laboratory analytical data indicates that overall dissolved phase
hydrocarbon constituents (primarily BTEX and MTBE) continues to occur at the site and are
decreasing with some seasonal fluctuations. Remaining constituent levels exceed NCAC 2L
standards at multiple locations for various constituents and at one monitor well exceed
NCAC 2B standards (benzene and toluene).
■ At this time, based on the information in this report, we recommend incident closure through
a Notice of Residual Petroleum and issuance of a No Further Action for the incident.
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

Monitoring Report November 26, 2018
(Former) SERVCO No. 00311 Incident No. 27502
Concord, North Carolina Excel No. 23056
1
Enter the date the monitoring report was due. 11/30/2018 Will this report be
YES
NO
submitted after the established clue date?
2
Was any required information from the above template missing front this report?
YES
NO
IF the answer to question #I or#! 2 is "YES", please provide additional information in this cell to explain
what was missing and why.
3
If applicable, will any of the proposed attenuation milestones under the schedule YES
NO
approved in the Corrective Action Plan not be ntet? (wilhin a reasonable margin of er r a1)
IF the answer to question 43 is "NO", skip to the certification under 48 below.
IF the answer to question 43 is "YES", please generally describe in this cell the possible reason(s) and
outline proposed remedies. (This should be described in more detail in the report text above.)
4
Does any known or suspected source zone soil contamination or free product remain
YES
NO
outside of the assessed area that could be inhibiting natural attenuation?
5
Has there been an unexpected increase in contaminant mass sufficient to suggest a
YES
NO
potential new release from a separate onsite or offshe source?
IF the answer to either question #i4 or 45 is "YES", generally describe in this cell any actions
recommended to further assess or clean up this known or suspected source. (This should be described in
more detail in the report text above.)
6
Certification:
1, Michael Stanforth, a Professional Engineer for Excel Civil & Environmental Associates, PLLC, do certify
that the information contained in this report is correct and accurate to the best of my knowledge.
Lxcel Civil & Environmental Associates, PLLC is licensed to practice engineering in North Carolina.
The
certification number of the company or corporation is P-0129.
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

Monitoring Report
(Former) SERVCO No. 00311
Concord. North Carolina
PROJECT INFORMATION
PRIMARY CONSULTANT: Excel Civil & Environmental Associates, PLLC
PROJECT MANAGER: Mike Stanforth
M=I:ATLd•Z41•]L1 III r_TO 0*1:Zait�ifr
November 26, 2018
Incident No. 27502
Excel No. 23056
SITE HISTORY: All five regulated UST's were removed as part of one excavation
during the closure activities in April 2003. A review of the
results reportedly indicated soil -sampling results with elevated
levels of petroleum hydrocarbons above the applicable NCDEQ
standards. A Limited Site Assessment Report was completed
in September 2003, which identified contaminated soils and
groundwater beneath the site with one water supply well
utilized for irrigation purposes located approximately 200 feet
upgradient of the site. The nearest surface water body is an
unnamed tributary of Three Mile Branch, which is located
approximately 500-feet north of the site. A Comprehensive Site
Assessment Report was completed in July 2004, further
defining the extent of soils and groundwater contamination.
Excel completed a Corrective Action Plan for the property in
February 2009, which recommended the utilization of air
sparging & soil vapor extraction (SVE) for remediation of
underlying soils & groundwater at the site. Excel contracted
Onion Equipment Company and Harvest Environmental
Services, Incorporated for the installation and startup of the
SVE and air sparge remediation system, comprised of nine air
sparge points and twelve SVE wells. The remediation system
was started on June 28, 2010.
GENERAL GEOLOGY:
Geologically, the subject site is located in the Central Piedmont
Physiographic Province. The 1985 USGS Geologic Map of North
Carolina indicates this area of the Central Piedmont consists of
metamorphosed quartz diorite, which is foliated to massive.
The soils were identified as silts and clays with heavy
weathered rock encountered at 45-fbgl.
REGULATORY INTERACTION
AGENCY:
NCDEQ, MRO, DWM, UST Section
AGENCY CONTACT:
Trudy Beverly
REQUEST:
Monthly system O&M and semiannual groundwater sampling
SITE ACTIVITIES:
Monthly site visits to perform operation and maintenance on
the air sparging and soil vapor extraction system. Semiannual
groundwater sampling and liquid level collection.
RISK ASSESSMENT
SENSITIVE RECEPTORS:
Underground utilities onsite and within R/Ws of Church Street,
one irrigation well approximately 200 feet upgradient and Three
Mile Branch approximately 500 feet north of site.
CLOSEST POTABLE WELL:
WS-1 located within 200 feet reportedly used for irrigation
purposes
MONITORING
SAMPLING METHOD & LIQUID LEVEL
GAUGING FREQUENCY:
Select Wells for 6200B
REPORTING FREQUENCY:
Semiannual Basis
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

APPENDICES
APPENDIX A - TABLES
APPENDIX B - FIGURES
APPENDIX C - LABORATORY ANALYSES & CHAIN OF CUSTODY FORMS
APPENDIX D - MANN-KENDALL ANALYSIS
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

APPENDIX A - TABLES
Table 1 — Monitor Well Construction and Liquid Level Data
Table 2 — Summary of Groundwater Analytical Data
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

TABLE 1
MONITOR WELL CONSTRUCTION AND LIQUID LEVEL DATA
(Former) Servco No. 00311
Concord, North Carolina
Excel Project No. 23056
Well ID
Top of
Casing ft.
Total Well
Depth ft.
Screen
Interval ft.
Depth to
Product ft.
Depth to
Water ft.
Product
Thickness ft.
Water Table
Elevation ft.
MW-1
100.00
45'
20'- 45'
--
36.43
--
63.57
MW-2
99.63
44'
19' - 44'
--
36.03
--
63.60
MW-3
99.34
43'
18' - 43'
--
Damaged
--
--
MW-4
100.10
45'
20'- 45'
--
36.02
--
64.08
MW-5
99.97
45'
20'- 45'
--
37.82
--
62.15
MW-6
99.22
40'
20'- 40'
--
35.64
--
63.58
MW-7
91.79
37'
17' - 37'
--
28.63
--
63.16
MW-8
99.28
49'
29' - 49'
--
35.84
--
63.44
MW-9
80.24
26'
11' - 26'
17.49
62.75
MW-10R
79.44
30'
20'- 30'
--
16.31
--
63.13
MW-11
68.94
20'
10' - 20'
--
NS
--
--
MW-12
72.04
22'
12' - 22'
--
11.25
--
60.79
MW-13
70.44
25'
10' - 25'
--
NS
--
--
MW-14
71.74
25'
10' - 25'
--
NS
--
--
VW-1
--
65'
60' - 65'
--
36.64
--
--
VW-2
--
61'
56' - 61'
--
36.04
--
--
NOTES:
Groundwater measurements collected November 6, 2018
ft. - feet
NL - Not Located
NS - Not Sampled
If necessary water table elevations adjusted to account for the presence of Free Product using the following formula: WTE = TOC - (DTW - (Product Thickness
0.75))

TABLE 2
SUMMARY OF GROUNDWATER ANALYTICAL DATA
(Former) Servco No. 00311
Concord, North Carolina
Excel Project No. 23056
Well ID
Sample
Date
C
N
m
C
3
o
c
N
d
a
W
d
X
~
W
DOa
-
c
m
t
w
Z
r
C
e
m
F
a
L
0
F
NCAC 2L
1
600
600
500
20
70
6
0.7
3
10xNCAC 2B or GCL
510
110
84,500
85,500
20,000
70,000
6,000
15,000
3,000
07/02/03
1,300
140
140
580
1,800
78
82
NA
88
03/12/07
680
< 50
'10
12
1,300
51
NA
55
< 1
09/18/08
<1
<5
<1
<3
<1
<1
NA
1.1
<1
11/03/09
240
17
4.8
30
640
22
NA
22
< 1
05/27/10
170
15
8.4
39
650
17
NA
4
< 5
11/04/10
36
< 25
< 5
< 15
530
16
NA
<5
<5
05/11/11
39
< 25
< 5
< 15
500
14
NA
12
< 1
10/11/11
21
<5
<1
<3
170
5
170
4.3
<1
05/21/12
16
< 5
< 1
1.2
230
5.8
1 7.2
4.6
1 < 1
12/03/12
NOT SAMPLED - DRY
04/30/13
<1
<5
<1
<3
47
<1
<5
2
<1
MW-1
10/09/13
1.1
<5
<1
<3
42
<1
<5
5.3
<1
05/14/14
<1
<5
<1
<3
<5
<5
<5
<1
<0.4
12/29/14
< 0.33
< 0.78
< 0.38
< 1.06
0.42 J
< 0.32
< 1
< 0.37
< 0.4
05/07/15
0.589 J
< 0.78
< 0.38
< 1.06
0.449 J
< 0.32
< 1
0.541 J
< 0.4
11/03/15
< 0.33
< 0.78
< 0.38
< 1.06
1.13
< 0.32
< 1
1.69
< 0.4
05/10/16
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
< 0.37
< 0.4
11 /03/16
0.442 J
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
< 0.37
< 0.4
05/04/17
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
< 0.37
< 0.4
11 /09/17
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
0.605 J
< 0.4
06/28/18
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
0.441 J
< 0.4
11 /06/18
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
1.01
< 0.4
07/02/03
1,300
80
76
210
1,100
37
110
NA
NA
03/12/07
390
48
< 5
59
480
18
NA
8.4
< 5
09/18/08
230
< 100
< 20
20
660
25
NA
< 20
< 20
11/03/09
260
< 50
< 10
49
740
22
1 NA
< 10
< 10
05/27/10
210
160
33
216
640
18
NA
3.8
< 1
11/04/10
5.5
<25
<5
<15
500
18
NA
<5
<5
05/11/11
<5
<25
<5
<15
580
17
NA
<5
<5
10/11/11
3.4
<5
<1
6
340
14
<5
4
<1
05/21/12
<5
<25
<5
<15
190
6.7
<25
6.8
<5
12/03/12
<1
<5
<1
<3
150
5.3
<5
5.4
<1
MW2
04/30/13
<1
<5
<1
<3
76
2.6
<5
5.3
<1
10/09/13
< 1
< 5
< 1
< 3
49
1.6
< 5
1 4.8
< 1
05/14/14
<1
<5
<1
<3
10
<5
<5
2
<1
12/29/14
< 0.33
< 0.78
< 0.38
< 1.06
2.1
< 0.32
< 1
2.1
< 0.4
05/07/15
< 0.33
< 0.78
< 0.38
< 1.06
1.46
< 0.32
< 1
1.11
< 0.4
11/03/15
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
1.53
< 0.4
05/10/16
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
0.782 J
< 0.4
11/03/16
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
1.27
< 0.4
05/04/17
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
1.14
< 0.4
11/09/17
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
1.06
< 0.4
06/28/18
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
0.763 J
< 0.4
11/06/18
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
0.966 J
< 0.4
08/27/03
7.3
< 5
2
29
360
19
< 10
NA
NA
03/12/07
< 1
<5
< 1
<3
24
1.6
NA
10
< 1
09/18/08
< 1
<5
< 1
<3
9.8
1.2
NA
7.2
< 1
11 /03/09
< 1
<5
< 1
<3
1.2
< 1
NA
7.2
< 1
05/27/10
< 1
<5
< 1
<3
3.1
< 1
NA
5.1
< 1
11/04/10
<1
<5
<1
<3
<1
<1
NA
4.3
<1
05/11/11
<1
<5
<1
<3
1.4
<1
NA
3.5
<1
10/11/11
<1
<5
<1
<3
1.4
<1
<5
5.7
<1
05/21/12
<1
<5
<1
<3
<1
<1
<5
1.7
<1
MW-3
12/03/12
<1
<5
<1
<3
<1
<1
<5
2.2
<1
04/30/13
<1
<5
<1
<3
<1
<1
<5
<1
<1
10/09/13
<1
<5
<1
<3
<1
<1
<5
<1
<1
05/14/14
<1
<5
<1
<3
1 <5
1 <5
<5
1 <1
<1
12/29/14
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
0.67 J
< 0.4
OS/07/15
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
0.432 J
< 0.4
11 /03/15
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
0.446 J
< 0.4
05/10/16
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
< 0.37
< 0.4
11/03/16
NOT SAMPLED - DAMAGED
Page 1 of 5

TABLE 2
SUMMARY OF GROUNDWATER ANALYTICAL DATA
(Former) Servco No. 00311
Concord, North Carolina
Excel Project No. 23056
Well ID
Sample
Date
C
N
m
C
e
c
N
a
W
d
X
~
W
DO
a
c
m
t
w
Z
r
C
e
m
F
a
L
o
F
NCAC 2L
1
600
600
500
20
70
6
0.7
3
10xNCAC 2B or GCL
510
110
84,500
85,500
20,000
70,000
6,000
15,000
3,000
08/27/03
24
< 5
< 0.5
< 1.5
7.2
< 5
< 10
NA
NA
03/12/07
2.3
<5
< 1
< 3
2.6
< 1
NA
43
< 1
09/18/08
6,900
20,000
3,600
17,500
< 250
< 250
NA
< 250
< 250
11/03/09
<1
<5
<1
<3
<1
<1
NA
41
<1
05/27/10
< 1
240
< 1
< 3
< 1
< 1
NA
240
< 1
11/04/10
<1
<5
<1
<3
<1
<1
NA
29
<1
05/11/11
<1
<5
<1
<3
9.8
<1
NA
32
<1
10/11/11
<1
<5
<1
<3
<1
<1
<1
11
<1
05/21/12
<1
<5
<1
<3
<1
<1
<5
8.8
<1
12/03/12
<1
<5
<1
<3
<1
<1
<5
10
<1
MW-4
04/30/13
<1
<5
<1
<3
<1
<1
<5
7.9
<1
10/09/13
<1
<5
<1
<3
<1
<1
<5
7.8
<1
05/14/14
<1
<5
<1
<3
<5
<5
<5
6.7
<1
12/29/14
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
6.0
< 0.4
05/07/15
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
7.39
< 0.4
11/03/15
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
4.84
< 0.4
05/10/16
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
5.23
< 0.4
11/03/16
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
1 3.69
< 0.4
05/04/17
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
3.06
< 0.4
11/09/17
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
2.49
< 0.4
06/28/18
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
1.99
< 0.4
11/06/18
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
3.07
< 0.4
08/27/03
1,900
< 250
< 25
< 75
2,100
< 250
< 250
NA
NA
03/12/07
880
< 500
< 100
< 300
710
< 100
NA
< 100
< 100
09/18/08
530
< 50
24
33
950
54
NA
13
< 10
11/03/09
440
< 50
< 10
< 30
1,200
55
NA
18
< 10
05/27/10
320
<5
1.1
8
810
35
NA
15
4.5
11/04/10
6.2
< 25
< 5
8
770
27
NA
13
5.6
05/11/11
8.3
< 25
< 5
< 15
850
27
NA
14
< 5
10/11/11
< 10
< 50
< 10
< 30
440
12
< 50
23
< 10
05/21/12
8.7
< 25
< 5
< 15
580
17
< 25
17
< 5
12/03/12
< 1
< 5
< 1
< 3
280
7.9
< 5
25
< 1
04/30/13
3.5
1 < 10
<2
< 6
360
10
< 10
18
<2
M W-5
10/09/13
<2
< 10
<2
< 6
220
6.9
< 10
23
<2
05/14/14
<1
<5
<1
1 <3
180
1 <5
<5
13
<1
12/29/14
< 0.33
< 0.78
< 0.38
< 1.06
39
0.96 J
< 1
6.6
< 0.4
05/07/15
< 0.33
< 0.78
< 0.38
< 1.06
52.1
1.17
< 1
4.45
< 0.4
11 /03/15
< 0.33
< 0.78
< 0.38
< 1.06
5.71
< 0.32
< 1
4.67
< 0.4
05/10/16
< 0.33
< 0.78
< 0.38
< 1.06
4.3
< 0.32
< 1
3.2
< 0.4
11 /03/16
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
3.54
< 0.4
05/04/17
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
3.22
< 0.4
11 /09/17
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
3.33
< 0.4
06/28/18
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
2.06
< 0.4
11 /06/18
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
1.98
< 0.4
M W-6
02/26/04
< 1
< 5
< 1
< 2
< 5
< 5
< 5
NA
NA
02/26/04
< 1
< 5
< 1
< 2
< 5
< 5
< 5
400
1.3
03/12/07
< 1
< 5
< 1
< 3
< 1
< 1
NA
340
1.2
09/18/08
< 1
< 5
< 1
< 3
< 1
< 1
NA
220
6.6
05/27/10
< 1
< 5
< 1
< 3
< 1
< 1
NA
220
< 1
05/11/11
<2
<10
<2
<6
<2
<2
NA
170
<2
10/11/11
<5
<25
<5
<15
<5
<5
<5
190
<25
05/21/12
<5
<25
<5
<15
<5
<5
7 5
64
<5
12/03/12
<1
<5
<1
<3
<1
<1
<5
1 44
<1
04/30/13
<1
<5
<1
<3
<1
<1
<5
68
<1
MW-7
10113 - 5/14
NOT LOCATED
12/29/14
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
8.0
0.57 J
05/07/15
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
9.85
< 0.4
11 /03115
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
11.80
< 0.4
05/10/16
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
5.95
< 0.4
11 /03116
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
12.40
< 0.4
05/04/17
< 0.66
< 0.82
< 0.77
< 2.12
< 0.73
< 0.64
< 2
12.40
< 0.8
11 /09117
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< .32
< 1
11.60
< 0.4
06/29/18
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
10.50
< 0.4
11 /O6/18
< 0.33
< 0.41
< 0.38
< 1.06
< 0.37
< 0.32
< 1
12.90
< 0.4
Page 2 of 5

TABLE 2
SUMMARY OF GROUNDWATER ANALYTICAL DATA
(Former) Servco No. 00311
Concord, North Carolina
Excel Project No. 23056
Well ID
Sample
Date
C
N
m
C
o
F
c
N
a
W
d
X
~
W
DO
a
c
N
t
W
Z
r
C
e
A
F
a
L
o
U
F
NCAC 2L
1
600
600
500
20
70
6
0.7
3
10xNCAC 2B or GCL
510
110
84,500
85,500
20,000
70,000
6,000
15,000
3,000
05/13/04
8,700
27,000
9,900
47,000
< 1,000
< 1,000
4,100
NA
NA
3/07 - 5/10
NOT SAMPLED - FREE PRODUCT OBSERVED
11/04/10
4,100
17,000
3,100
17,900
< 200
< 200
NA
< 200
< 200
05/11/11
2,300
10,000
1,900
15,200
< 100
< 10
NA
< 100
< 100
10/11/11
2,100
11,000
3,300
23,800
< 100
< 100
2,100
< 100
< 500
05/21/12
1,400
5,800
3,100
25,500
< 100
< 100
2,600
< 100
< 100
12/03/12
NOT SAMPLED - FREE PRODUCT OBSERVED
04/30/13
320 1,000 1,100 1 7,800 1 <50 1 <50 1 1,600 1 <50 <50
10/09/13
NOT SAMPLED - FREE PRODUCT OBSERVED
MW-8
05/14/14
< 100
< 500
660
6,600
< 500
< 500
940
< 100
< 100
12/29/14
< 16
< 39
91
1,000
< 18
< 16
440
< 19
< 20
05/07/15
12.2 J
69.5 J
197
1,452
< 7.3
< 6.4
574
< 7.4
< 8
11/03/15
10.7
118
597
3,690
< 3.67
< 3.2
689
< 3.72
< 3.98
05/10/16
< 33.1
355 J
851
4,520
< 36.7
< 32
799
< 37.2
< 39.8
11/03/16
< 3.31
8.77 J
34.3
706
< 3.67
< 3.2
332
< 3.72
< 3.98
05/04/17
< 3.31
12
81.3
823
< 3.67
< 3.2
551
< 3.72
< 3.98
11/09/17
43.2
5.67 J
128
380
< 3.67
< 3.2
239
< 3.72
< 3.98
66/28/18
< 3.31
< 4.12
5.93 J
78 J
< 3.67
< 3.2
92.7
< 3.72
< 3.98
11 /06/18
16.6
4.31
118
430
< 3.67
< 3.2
184
< 3.72
< 3.98
02/26/04
12,000
< 2,500
< 500
< 1,000
4,700
< 2,500
< 2,500
NA
NA
03/12/07
32
68
50
360
800
22
NA
20
< 10
09/18/08
27
< 5
< 1
4.9
430
34
NA
21
4
11/03/09
320
< 25
5.4
17
3,700
180
NA
13
< 50
05/27/10
2,800
< 250
< 50
500
4,900
330
NA
< 50
< 50
11/04/10
250
< 120
< 250
< 75
3,100
200
NA
< 25
< 25
05/11/11
1,000
<100
<20
<60
3,900
330
NA
<20
<20
11/15/11
2,000
< 5
< 1
< 3
9,600
67
< 5
20
9.4
05/21/12
120
< 5
< 5
8.5
2,200
110
18
6.6
5.4
12/03/12
34
< 100
< 20
< 60
1,500
71
< 100
< 20
< 20
M W-9
04/30/13
< 1
< 5
< 1
< 3
37
1.7
< 5
< 1
< 1
10/09/13
2.3
<5
<1
<3
1,500
62
<5
4.5
3.7
05/14/14
1.1
< 5
< 1
< 3
500
24
< 5
5.7
6.8
12/29/14
0.9 J
< 1.6
< 0.77
< 2.08
160
7.6
4.7 J
2.0 J
1.4 J
05/07/15
NOT SAMPLED - NOT LOCATED
11/03/15
1 11.9
2.7 J
3.38
5.23 J
437
21.5
22.5
1.79
0.753 J
05/10/16
115
8.4
34.5
13.01
743
27.7
75.3
2.16
< 0.4
11/03/16
4.17
< 0.78
< 0.38
0.446 J
375
12.3
< 1
17.2
2.31
05/04/17
3.22
0.914 J
0.477 J
1.446 J
333
14.2
7.36
5.26
0.883 J
11/09/17
10.9
< 0.41
< 0.38
1.42
186
6.79
1.07 J
4.68
1.02
06/29/18
0.607 J
< 0.41
< 0.38
< 1.06
165
4.68
< 1
2.89
< 0.4
11/06/18
1.45
0.766 J
1.06
1.287 J
132
4.26
1.17 J
1.22
< 0.398
02/26/04
12,000
24,000
3,900
21,600
2,500
< 2,500
< 2,500
NA
< 200
03/12/07
13,000
19,000
2,200
13,000
1,000
< 200
NA
< 200
< 2,500
09/18/08
13,000
22,000
4,000
23,200
3,200
< 2,500
NA
< 2,500
< 200
11/03/09
NOT SAMPLED - FREE PRODUCT OBSERVED
MW-10
05/27/10
11,000
12,000
2,000
17,500
450
< 200
NA
< 200
< 200
11/04/10
7,400
8,000
1,400
11,000
650
<200
NA
<200
<50
05/11/11
5,400
3,900
1,100
7,400
820
57
NA
<50
<1
10/11/11
30
27
5.7
48
2.5
< 1
< 1
< 1
< 25
5/12 - 12/12
NOT SAMPLED - DAMAGED
04/30/13
1,900
600
580
1,870
450
30
170
<25
<25
10/09/13
3,600
1,700
1,300
4,900
630
45
360
< 10
< 10
05/14/14
3,200
12,000
2,600
15,800
< 1,200
< 1,200
< 1,200
< 250
< 250
12/29/14
1,800
6,900
2,700
13,800
250
<8.0
690
<9.3
<10
05/07/15
3,700
5,590
1,930
8,290
503
37.4J
502
<37
<40
MW-10R
11/03/15
3,630
4,750
1,950
8,430
512
31.3 J
488
< 18.6
< 19.9
05/10/16
781
41640
1,460
11,120
57.4
<8
673
<9.3
<9.95
11/03/16
1,370
1,570
853
3,890
238
<32
3961
<37.2
<39.8
05/04/17
3,510
2,1150
1,840
6,730
257
28.1
531
<9.3
<9.95
11/09/17
1,170
1,530
1,170
3,820
235
14.1
289
<9.3
<9.95
06/28/18
1,470
422
1,310
3,036
118
9.84J
262
<7.4
<7.96
11/06/18
932
2,980
1,800
10,780
24.9
<0.256
591
<0.372
<0.398
Page 3 of 5

TABLE 2
SUMMARY OF GROUNDWATER ANALYTICAL DATA
(Former) Servco No. 00311
Concord, North Carolina
Excel Project No. 23056
Well ID
Sample
Date
C
o
ro
C
I
F
c
N
a
T
W
d
2
X
A
F
W
m
wa
c
m
t
L
6
2
r
C
e
m
F
a
L
o
s
u
F
NCAC 2L
1
600
600
500
20
70
6
0.7
3
10xNCAC 2B or GCL
510
110
84,500
85,500
20,000
70,000
61000
15,000
3,000
05/13/04
<0.5
<5
<0.5
<1.5
<5
<5
<5
NA
NA
11/04/10
<1
<5
<1
<3
<1
<1
NA
<1
<1
05/11/11
1
<5
<1
<3
<1
<1
NA
<1
<1
10/11/11
<1
<5
<1
<3
<1
<1
<5
1.8
<1
05/21/12
<1
<5
<1
<3
<1
<1
<5
1.2
<1
12/03/12
<1
<5
<1
<3
<1
<1
<5
2.9
<1
MW 11
04/30/13
<1
<5
<1
<3
<1
<1
<5
1.1
<1
10/10/13
<1
<5
<1
<3
<1
<1
<5
2.5
<1
05/14/14
<1
<5
<1
<3
<5
<5
<5
2.4
<1
12/29/14
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
2.4
0.5 J
05/07/15
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
1.95
0.524 J
11/03/15
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
2.38
0.726 J
05/10/16
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
< 0.32
< 1
2.25
0.63 J
11/16 - 6/18
NOT SAMPLED - NOT PART OF SCOPE OF WORK
05/13/04
240
< 25
< 2.5
< 7.5
1,800
72
< 25
NA
NA
03/12/07
< 1
< 5
< 1
< 3
14
8.4
NA
86
2.2
09/18/08
< 10
< 50
< 10
< 30
470
32
NA
< 10
< 10
11/03/09
NOT SAMPLED - NOT LOCATED
05/27/10
< 1
< 5
< 1
< 3
30
13
NA
< 1
< 1
11/04/10
<5
<25
<5
<15
190
17
NA
<5
<5
05/11/11
38
24
8.5
62
35
18
NA
< 1
< 1
10/11/11
<1
<5
<1
<3
260
24
8.9
<1
<5
05/21/12
<1
<5
<1
<3
210
35
<5
<1
<1
12/03/12
< 1
< 5
< 1
< 3
760
76
< 5
1.2
< 1
04/30/13
< 1
< 5
< 1
< 3
70
27
< 5
< 1
< 1
M W-12
10/10/13
<1
<5
<1
<3
290
27
<5
<1
<1
05/14/14
<1
<5
<1
<3
<5
<5
<5
80
<1
12/29/14
< 0.33
< 0.78
< 0.38
< 1.06
42
18
< 1
< 0.37
< 0.4
05/07/15
< 0.33
< 0.78
< 0.38
< 1.06
158
15.2
< 1
< 0.37
< 0.4
11 /03/15
< 0.33
< 0.78
< 0.38
< 1.06
327
29.5
< 1
< 0.37
< 0.4
05/10/16
< 0.33
< 0.78
< 0.38
< 1.06
103
8.11
< 1
< 0.37
< 0.4
11 /03/16
< 0.33
< 0.78
< 0.38
< 1.06
81.6
16.3
< 1
< 0.37
< 0.4
05/04/17
< 0.33
< 0.41
< 0.38
< 1.06
12.5
3.65
< 1
< 0.37
< 0.4
11 /09/17
< 0.33
< 0.41
< 0.38
< 1.06
11.6
4.04
< 1
< 0.37
< 0.4
06/29/18
< 0.33
< 0.41
< 0.38
< 1.06
1.32
0.497 J
< 1
34.4
0.481 J
11 /06/18
< 0.33
< 0.41
< 0.38
< 1.06
14
0.955 J
< 1
< 0.37
< 0.4
06/24/04
< 0.5
< 5
< 0.5
< 1.5
< 1
< 1
< 5
NA
NA
11 /04/10
< 1
<5
<1
<3
<1
< 1
NA
<1
<1
05/11/11
<1
<5
<1
<3
<1
<1
NA
<1
<1
10/11/11
<1
<5
<1
<3
<1
<1
<5
<1
<1
05/21/12
<1
<5
<1
<3
<1
<1
<5
<1
<1
12/03/12
<1
<5
<1
<3
<1
<1
<5
<1
<1
04/30/13
<1
<5
<1
<3
<1
<1
<5
<1
<1
MW-13
10/10/13Wl<
<1
<3
<1
<1
<5
<1
<1
05/14/14<1
<3
<5
<5
<5
<1
<1
12/29/14
< 0.38
< 1.06
< 0.37
< 0.32
< 1
< 0.37
< 0.4
05/07/15
< 0.38
< 1.06
< 0.37
< 0.32
< 1
< 0.37
< 0.4
11/03/15
< 0.38
< 1.06
< 0.37
< 0.32
< 1
< 0.37
< 0.405/10/16
< 0.38
< 1.06
< 0.37
< 0.32
< 1
< 0.37
< 0.4
11/16 - 6/18
NOT SAMPLED - NOT PART OF SCOPE OF WORK
Page 4 of 5

TABLE 2
SUMMARY OF GROUNDWATER ANALYTICAL DATA
(Former) Servco No. 00311
Concord, North Carolina
Excel Project No. 23056
Well ID
Sample
Date
C
N
m
C
I
1e
2
c
N
d
a
W
ar
2
X
F
W
1n
2
a
-
c
m
t
t
W
Z
r
C
2
m
F
a
L
`o
U
F
NCAC 2L
1
600
600
500
20
70
6
0.7
3
10xNCAC 2B or GCL
510
110
84,500
85,500
20,000
70,000
61000
15,000
3,000
06/24/04
1.2
<5
<0.5
<1.5
38
11
<5
NA
NA
03/12/07
< 1
< 5
< 1
< 3
14
8.5
NA
88
2.1
09/18/08
< 1
< 5
< 1
< 3
10
5.8
NA
24
< 1
11/03/09
< 1
< 5
< 1
< 3
11
6
NA
25
1.1
05/27/10
< 1
< 5
< 1
< 3
5.6
3.8
NA
93
1
11/04/10
<1
< 5
< 1
< 3
5.2
3.3
NA
98
1.2
05/11/11
2.8
< 5
< 1
4.1
3.6
1.7
NA
120
< 1
10/11/11
<1
< 5
<1
< 3
3.3
1.8
13
63
<1
MW-14
05/21/12
<1
<5
<1
<3
2.5
1.4
<5
71
<1
12/03/12
<1
<5
<1
<3
4.6
2.1
<5
75
<1
04/30/13
< 1
< 5
< 1
< 3
2.1
1.2
< 5
83
< 1
10/10/13
<1
<5
<1
<3
2.4
1 1.6
<5
78
<1
05/14/14
NOT LOCATED
12/29/14
< 0.33
< 0.78
< 0.38
< 1.06
0.67 J
20
<1
5.9
1.8
05/07/15
< 0.33
< 0.78
< 0.38
< 1.06
1.6
4.42
< 1
10.9
0.775 J
11/03/15
< 0.33
< 0.78
< 0.38
< 1.06
< 0.37
0.753 J
< 1
0.915 J
0.468 J
05/10/16
< 0.33
< 0.78
< 0.38
< 1.06
5.15
1.95
< 1
32.6
1.19
11/16 - 6/18
NOT SAMPLED - NOT PART OF SCOPE OF WORK
09/18/08
<1
<5
<1
<3
<1
<1
NA
<1
<1
11/03/09
<1
<5
<1
<3
<1
<1
NA
<1
<1
05/27/10
<1
<5
<1
<3
<1
<1
NA
<1
<1
11/04/10
<1
<5
<1
<3
<1
<1
NA
<1
<1
05/11/11
<1
<5
<1
<3
<1
<1
NA
<1
<1
10/11/11
<1
<5
<1
<3
<1
<1
<5
<1
<1
05/21/12
<1
<5
<1
<3
<1
<1
<5
<1
<1
WS-1
12/03/12
NOT SAMPLED - INOPERABLE
04/30/13
<1
<5
<1
<3
<1
<1
<5
<1
<1
10/10/13
<1
<5
<1
<3
<1
<1
<5
<1
<1
05/14/14
<1
<5
<1
<3
<1
<5
<5
<1
<1
12/14 - 11/15
NOT SAMPLED - INOPERABLE
05/10/16
< 0.33 < 0.78 < 0.38 < 1.06 1 < 0.37 1 < 0.32 < 1 < 0.37 < 0.4
11/03/16
NOT SAMPLED - INOPERABLE
11/09/17
< 0.33 < 0.41 < 0.38 < 1.06 1 < 0.37 1 < 0.32 < 1 < 0.37 < 0.4
PLED - A E DENIED
NOTES:
Data provided in micrograms per liter orµg/L
Data in BOLD exceeds NCAC 2L, highlighted data exceeds 10x NCAC 28
NA - Not Analyzed
MTBE - Methyl Tort Butyl Ether
IPE- Di -Isopropyl Ether
PCE - Tetrachloroethene
TCE-Trichlomethene
NCAC- North Carolina Administrative Code
Additional Detections: 6.18 Sampling Event
Chloroform: MW-4-0.540 J; VW-1-0.443J
MW-8: 25.8 n-Bulylbenzene, 18.5 seo-Butylbenzene, 0.542 J lert-Butylbenzene, 39.5 lsopropylbenzene, 7.42 p-Isopropyltoluene, 117 n-Propylbenzene,
842 1,2,4-Trimethylbenzene, 138 1,3,5-Trimethylbenzene
MW-9: 11.7 J Acetone, 0.444 J n-Butylbenzene, 0.663 J secButylbenzene, 0.285 J cis-1,2-Dichloroethene, 0.697 J lsopropylbenzene,
0.456 J n-Propylbenzene 0.875 J 1,2,4-Trimethylbenzene, 0.615 J 1,3,5-Tdmethylbenzene
MW-10R: 14.4 n-Butylbenzene, 7.95 sec-Bulylbenzene, 66.1 lsopropylbenzene, 4.70 p-Isopropyltoluene, 8.27 J 4-Methyl-2-pentanone (MIRK),
189 n-Propylbenzene, 2,070 1,2,4-Trimethylbenzene, 5651,3,5-Tdmethylbenzene
MW: 12: 0.458 J n-Propylbenzene
Page 5 of 5

APPENDIX B - FIGURES
Figure 1 — Site Vicinity
Figure 2 — Site Plan
Figure 3 — Potable Wells Map
Figure 4 — Water Table Contour Map
Figure 5 — Groundwater Constituents Map
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

/ E 1
A.
4
EXCEL CIVIL & ENVIRONMENTAL
ASSOCIATES, PLLC
625 HUNTSMAN COURT
GASTONIA, NC 28054
[phone]
ram
FIGURE 1 - I �'
SITE VICINITY MAP
Source: U.S.G.S. 7.5 Minute Topographic Map N
Concord, NC, Quadrangle, 1987

z
0
x
x
am
x
I
ASPHALT
I
I
I
® I
MW-6 ,
WS-1
I
CHURCH I
I
I
r—————�
I
I
ASPHALT
I
I
I
I
I �
ASPHALT
CRASS
I RESIDENTIAL
I
a ,
I
I
MW-14 �
MW-12®
BRUMLEY AVENUE NE
I I MW-7 I I
ASPHALT I I I 0
GRASS I O
I V)
I I I I Q
ESIDENTIAL
NOTES
Map adapted from Aerial Photograph &
Cabarrus County Tax Map.
UST - Underground Storage Tank
All LISTS removed on 5/28/03
LEGEND
- - - - - Property Line (Approximate)
------- Right of Way
-------- Former UST Area
Monitoring Well Location
® SVE Well Location
a Sparge Well Location

Ada' 20
err. 1
EXCEL CIVIL & ENVIRONMENTAL
ASSOCIATES, PLLC
625 HUNTSMAN COURT
GASTONIA, NC 28054
[phone]
FIGURE 3 —
POTABLE WELLS MAP
Source: Cabarrus County GIS

4�
f i i
CHURCH
. rO`
ASPHALT
G.l 63,5'°i°i
Fi
row '
®
roe
v
ASPHALT
E10
r
62'
/ I
GRASS I RESIDENTIAL
I
I
I
81' ®MW-14
2
0. — —
—� —MW-- — C
—T 61.5'
ASPHALT Bi .5' 83.16' 3' 1825' 82' I
I 0
ASPHALT I I
I I I I GRASS I O
I I I I Q
ESIDENTiA
NOTES
Map adapted from Aerial Photograph &
Cabarrus County Tax Map.
UST - Underground Storage Tank
All USTs removed on 5/28/03
Data from liquid levels collected on November 6, 2018
Groundwater elevations from monitoring wells VW-1 and
VW-2 were not used in creation of contour lines.
LEGEND
- - - - - Property Line (Approximate)
------- Right of Way
-------- Former UST Area
Water Table Contour Line (Approximate)
Monitoring Well Location
® Irrigation Well Location

M
WS-1
I
CHURCH I
I
I
r————-�
I
I
ASPHALT
I
I
I
I '
I �
CHURCH
ASPHALT
I
r I
?1451S I
zo I RESIDENTIAL
\ I
37
I
I
I I MW-1
,®
®I
7 OX
GRA Ss
i
ESIDENTIAL
NOTES
Map adapted from Aerial Photograph &
Cabarrus County Tax Map.
UST - Underground Storage Tank
All LISTS removed on 5/28/03
Data from samples collected on November 6, 2018
Data provided in ug/I
BTEX - Summary of Benzene, Toluene,
Ethylbenzene & Xylenes
BDL - Below Detection Limits
MTBE - Methyl Tert Butyl Ether
PCE - Tetrachloroethene
FP - Measurable Free Product
NS - Not Sampled
LEGEND
- - - - - Property Line (Approximate)
------- Right of Way
--- Former UST Area
Monitoring Well Location
Benzene
BTEX Constituents Shown
MTBE
PCE
- - - - Estimated extent of Benzene at 2L
in groundwater
- - - - Estimated extent of MTBE at 2L
in groundwater
- - - - Estimated extent of total xylenes & naphthalene
in groundwater

APPENDIX C - LABORATORY ANALYSES & CHAIN OF CUSTODY FORMS
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

I
a7 A
ceAnaIXical °
National Center for Testing & Innovation
ANALYTICAL REPORT
November 13, 2018
Excel Civil & Environmental Associates
Sample Delivery Group: L1041993
Samples Received: 11/07/2018
Project Number: 23056
Description: Servco No. 00311
Report To: Mr. Mike Stanforth
PO Box 6172
Gastonia, NC 28056-6000
Entire Report Reviewed By: 4�41
Heather J Wagner
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be
reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace National
is performed per guidance provided in laboratory standard operating procedures: 060302, 060303, and 060304. i
q

TABLE OF CONTENTS
ONE LAB. NATIONWIDE.
Cp: Cover Page
Tc: Table of Contents
Ss: Sample Summary
Cn: Case Narrative
Sr: Sample Results
MW-1 L1041993-01
MW-2 L1041993-02
MW-4 L1041993-03
MW-5 L1041993-04
MW-7 L1041993-05
MW-8 L1041993-06
MW-9 L1041993-07
MW-10R L1041993-08
MW-12 L1041993-09
TRIP BLANK L1041993-10
Qc: Quality Control Summary
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
GI: Glossary of Terms
Al: Accreditations & Locations
Sc: Sample Chain of Custody
1
2
3
5
6
6
8
10
12
14
16
18
20
22
24
26
26
31
32
33
Fn
FS
[Cn]
FS-r
RC
F,
rAl
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 2 of 34

SAMPLE
SUMMARY
ONE LAB. NATIONWIDE.
Collected by
Collected date/time
Received date/time
MW-1 L1041993-01 GW
C.DeVane
11/06/1812:06
11/07/18 08:45
FP1
Method
Batch
Dilution
Preparation
Analysis
Analyst
date/time
date/time
FTC
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
WG1193520
1
11/08/1815:25
11/08/1815:25
ACG
Collected by
Collected date/time
Received date/time
M
MW-2 L1041993-02 GW
C.DeVane
11/06/1812:20
11/07/18 08:45
[Cn]
Method
Batch
Dilution
Preparation
Analysis
Analyst
date/time
date/time
Organic Compounds (GC/MS) by Method 6200E-1997
WG1193520
1
11/08/1815:45
11/08/1815:45
ACG
FSrVolatile
Collected by
Collected date/time
Received date/time
sQC
MW-4 L1041993-03 GW
C.DeVane
11/06/1812:00
11/07/18 08:45
Method
Batch
Dilution
Preparation
Analysis
Analyst
GI
date/time
date/time
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
WG1193520
1
11/08/1816:04
11/08/1816:04
ACG
FAI
Collected by
Collected date/time
Received date/time
MW-5 L1041993-04 GW
C.DeVane
11/06/1811:30
11/07/18 08:45
FSC
Method
Batch
Dilution
Preparation
Analysis
Analyst
date/time
date/time
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
WG1193520
1
11/08/1816:24
11/08/1816:24
ACG
Collected by
Collected date/time
Received date/time
MW-7 L1041993-05 GW
C.DeVane
11/06/1810:40
11/07/18 08:45
Method
Batch
Dilution
Preparation
Analysis
Analyst
date/time
date/time
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
WG1193520
1
11/08/1816:43
11/08/1816:43
ACG
Collected by
Collected date/time
Received date/time
MW-8 L1041993-06 GW
C.DeVane
11/06/1811:45
11/07/18 08:45
Method
Batch
Dilution
Preparation
Analysis
Analyst
date/time
date/time
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
WG1193520
1
11/08/1817:02
11/08/1817:02
ACG
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
WG1193906
25
11/09/1817:00
11/09/1817:00
PP
Collected by
Collected date/time
Received date/time
MW-9 L1041993-07 GW
C.DeVane
11/06/1810:26
11/07/18 08:45
Method
Batch
Dilution
Preparation
Analysis
Analyst
date/time
date/time
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
WG1193520
1
11/08/1817:22
11/08/1817:22
ACG
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
WG1193906
1
11/09/1817:18
11/09/1817:18
PP
Collected by
Collected date/time
Received date/time
MW-10R L1041993-08 GW
C.DeVane
11/06/1810:34
11/07/18 08:45
Method
Batch
Dilution
Preparation
Analysis
Analyst
date/time
date/time
Volatile Organic Compounds (GC/MS) by Method 6200E-1997
WG1193520
1
11/08/1817:41
11/08/1817:41
ACG
Volatile Organic Compounds (GC/MS) by Method 6200E-1997
WG1193906
100
11/09/1817:37
11/09/1817:37
PP
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 3 of 34

MW-12 L1041993-09 GW
SAMPLE
SUMMARY
Collected by
C. Devane
ONE LAB. NATIONWIDE.
Collected date/time Received date/time
11/06/1810:50 11/07/18 08:45
FP1
Method
Batch
Dilution Preparation
Analysis
Analyst
date/time
date/time
FTC
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
WG1193520
1 11/08/1818:01
11/08/1818:01
ACG
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
WG1193906
1 11/09/1817:56
11/09/1817:56
PP
Collected by
Collected date/time
Received date/time
TRIP BLANK L1041993-10 GW
C. Devane
11/06/18 00:00
11/07/18 08:45
4 n
Method
Batch
Dilution Preparation
Analysis
Analyst
date/time
FSrdate/time
Volatile Organic Compounds (GC/MS) by Method 620061997
WG1193520
1 11/08/1814:08
11/08/1814:08
ACG
RC
F,
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 4 of 34

CASE NARRATIVE
ONE LAB. NATIONWIDE.
FP1
All sample aliquots were received at the correct temperature, in the proper containers, with the
appropriate preservatives, and within method specified holding times, unless qualified or notated within
the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples
FTChave
been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control
are within established criteria except where addressed in this case narrative, a non-conformance form
or properly qualified within the sample results. By my digital signature below, I affirm to the best of my
FSS
knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the
quality of the data have been identified by the laboratory, and no information or data have been
knowingly withheld that would affect the quality of the data.
FSr
FC-1
4�j
�GI
Heather J Wagner
FAI
Project Manager
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 5 of 34

M W-1 SAMPLE RESULTS - 01 ONE LAB. NATIONWIDE.
Collected date/time: 11/06/18 12:06 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result Qualifier
MDL
RDL
Dilution Analysis
Batch
Analyte
ug/I
ug/I
ug/I
date / time
Acetone
U
10.0
50.0
1 11/08/201815:25
WG1193520
Acrolein
U
8.87
50.0
1 11/08/201815:25
WG1193520
Acrylonitrile
U
1.87
10.0
1 11/08/201815:25
WG1193520
Benzene
U
0.331
1.00
1 11/08/201815:25
WG1193520
Bromobenzene
U
0.352
1.00
1 11/08/201815:25
WG1193520
Bromodichloromethane
U
0.380
1.00
1 11/08/201815:25
WG1193520
Bromoform
U
0.469
1.00
1 11/08/201815:25
WG1193520
Bromomethane
U
0.866
5.00
1 11/08/201815:25
WG1193520
n-Butylbenzene
U
0.361
1.00
1 11/08/201815:25
WG1193520
sec -Butyl benzene
U
0.365
1.00
1 11/08/201815:25
WG1193520
ter[-Butylbenzene
U
0.399
1.00
1 11/08/201815:25
WG1193520
Carbon tetrachloride
U
0.379
1.00
1 11/08/201815:25
WG1193520
Chlorobenzene
U
0.348
1.00
1 11/08/201815:25
WG1193520
Chlorodibromomethane
U
0.327
1.00
1 11/08/201815:25
WG1193520
Chloroethane
U
0.453
5.00
1 11/08/201815:25
WG1193520
Chloroform
U
0.324
5.00
1 11/08/201815:25
WG1193520
Chloromethane
U
0.276
2.50
1 11/08/201815:25
WG1193520
2-Chlorotoluene
U
0.375
1.00
1 11/08/201815:25
WG1193520
4-Chlorotoluene
U
0.351
1.00
1 11/08/201815:25
WG1193520
1,2-Dibromo-3-Chloropropane
U
1.33
5.00
1 11/08/201815:25
WG1193520
1,2-Dibromoethane
U
0.381
1.00
1 11/08/201815:25
WG1193520
Dibromomethane
U
0.346
1.00
1 11/08/201815:25
WG1193520
1,2-Dichlorobenzene
U
0.349
1.00
1 11/08/201815:25
WG1193520
1,3-Dichlorobenzene
U
0.220
1.00
1 11/08/201815:25
WG1193520
1,4-Dichlorobenzene
U
0.274
1.00
1 11/08/201815:25
WG1193520
Dichlorodifluoromethane
U
0.551
5.00
1 11/08/201815:25
WG1193520
1,1-Dichloroethane
U
0.259
1.00
1 11/08/201815:25
WG1193520
1,2-Dichloroethane
U
0.361
1.00
1 11/08/201815:25
WG1193520
1,1-Dichloroethene
U
0.398
1.00
1 11/08/201815:25
WG1193520
cis-1,2-Dichloroethene
U
0.260
1.00
1 11/08/201815:25
WG1193520
trans-1,2-Dichloroethene
U
0.396
1.00
1 11/08/201815:25
WG1193520
1,2-Dichloropropane
U
0.306
1.00
1 11/08/201815:25
WG1193520
1,1-Dichloropropene
U
0.352
1.00
1 11/08/201815:25
WG1193520
1,3-Dichloropropane
U
0.366
1.00
1 11/08/201815:25
WG1193520
2,2-Dichloropropane
U
0.321
1.00
1 11/08/201815:25
WG1193520
Di -isopropyl ether
U
0.320
1.00
1 11/08/201815:25
WG1193520
Ethylbenzene
U
0.384
1.00
1 11/08/201815:25
WG1193520
Hexachloro-1,3-butadiene
U
0.256
1.00
1 11/08/201815:25
WG1193520
Isopropylbenzene
U
0.326
1.00
1 11/08/201815:25
WG1193520
p-Isopropyltoluene
U
0.350
1.00
1 11/08/201815:25
WG1193520
2-Butanone (MEK)
U
3.93
10.0
1 11/08/201815:25
WG1193520
Methylene Chloride
U
1.00
5.00
1 11/08/201815:25
WG1193520
4-Methyl-2-pentanone (MIBK)
U
2.14
10.0
1 11/08/201815:25
WG1193520
Methyl tert-butyl ether
U
0.367
1.00
1 11/08/201815:25
WG1193520
Naphthalene
U
1.00
5.00
1 11/08/201815:25
WG1193520
n-Propylbenzene
U
0.349
1.00
1 11/08/201815:25
WG1193520
Styrene
U
0.307
1.00
1 11/08/201815:25
WG1193520
1,1,1,2-Tetrachloroethane
U
0.385
1.00
1 11/08/201815:25
WG1193520
1,1,2,2-Tetrachloroethane
U
0.130
1.00
1 11/08/201815:25
WG1193520
Tetrachloroethene
1.01
0.372
1.00
1 11/08/201815:25
WG1193520
Toluene
U
0.412
1.00
1 11/08/201815:25
WG1193520
1,2,3-Trichlorobenzene
U
0.230
1.00
1 11/08/201815:25
WG1193520
1,2,4-Trichlorobenzene
U
0.355
1.00
1 11/08/201815:25
WG1193520
1,1,1-Trichloroethane
U
0.319
1.00
1 11/08/201815:25
WG1193520
1,1,2-Trichloroethane
U
0.383
1.00
1 11/08/201815:25
WG1193520
Trichloroethene
U
0.398
1.00
1 11/08/201815:25
WG1193520
ACCOUNT:
PROJECT:
SDG:
DATE/TIME:
Excel Civil & Environmental
Associates
23056
L1041993
11/13/18 16:34
FP1
FTc
FSS
4
Cn
FC]
F q,
FAI
FSC
PAGE:
6 of 34

ONE LAB. NATIONWIDE.
MW-1 SAMPLE RESULTS - 01
Collected date/time: 11/06/18 12:06 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Analyte
Trichlorofluoromethane
1,2,3-Trichloropropane
1,2,4-Tri methyl ben zen e
1,3,5-Trim ethyl benzene
Vinyl chloride
o-Xylene
m&p-Xylenes
(S) Toluene-d8
(S) Dibromofluoromeftne
(S) a, a, a-Trifluoroto/uene
(S) 4-Bromof/uorobenzene
Result
Qualifier MDL
RDL
Dilution Analysis
ug/I
ug/I
ug/I
date / time
U
1.20
5.00
1 11/08/201815:25
U
0.807
2.50
1 11/08/201815:25
U
0.373
1.00
1 11/08/201815:25
U
0.387
1.00
1 11/08/201815:25
U
0.259
1.00
1 11/08/201815:25
U
0.341
1.00
1 11/08/201815:25
U
0.719
2.00
1 11/08/201815:25
104
80.0-120
111081201815.25
91.9
75.0-120
111081201815.25
105
80.0-120
111081201815.25
96.5
77.0-126
111081201815.25
Batch
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
Fp
FTc
FS
Fn
Fc
F,
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 7 of 34

MW-2 SAMPLE RESULTS - 02 ONE LAB. NATIONWIDE.
Collected date/time: 11/06/18 12:20 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result
Analyte ug/I
Acetone U
Acrolein U
Acrylonitrile U
Benzene U
Bromobenzene U
Bromodichloromethane U
Bromoform U
Bromomethane U
n-Butylbenzene U
sec -Butyl benzene U
ter[-Butylbenzene U
Carbon tetrachloride U
Chlorobenzene U
Chlorodibromomethane U
Chloroethane U
Chloroform U
Chloromethane U
2-Chlorotoluene U
4-Chlorotoluene U
1,2-Dibromo-3-Chloropropane U
1,2-Dibromoethane U
Dibromomethane U
1,2-Dichlorobenzene U
1,3-Dichlorobenzene U
1,4-Dichlorobenzene U
Dichlorodifluoromethane U
1,1-Dichloroethane U
1,2-Dichloroethane U
1,1-Dichloroethene U
cis-1,2-Dichloroethene U
trans-1,2-Dichloroethene U
1,2-Dichloropropane U
1,1-Dichloropropene U
1,3-Dichloropropane U
2,2-Dichloropropane U
Di -isopropyl ether U
Ethylbenzene U
Hexachloro-1,3-butadiene U
Isopropylbenzene U
p-Isopropyltoluene U
2-Butanone (MEK) U
Methylene Chloride U
4-Methyl-2-pentanone (MIBK) U
Methyl tert-butyl ether U
Naphthalene U
n-Propylbenzene U
Styrene U
1,1,1,2-Tetrachloroethane U
1,1,2,2-Tetrachloroethane U
Tetrachloroethene 0.966
Toluene U
1,2,3-Trichlorobenzene U
1,2,4-Trichlorobenzene U
1,1,1-Trichloroethane U
1,1,2-Trichloroethane U
Trichloroethene U
Qualifier MDL RDL Dilution Analysis Batch
ug/I ug/I date / time
J
ACCOUNT:
Excel Civil & Environmental Associates
10.0
50.0 1
11/08/201815:45
WG1193520
8.87
50.0 1
11/08/201815:45
WG1193520
1.87
10.0 1
11/08/201815:45
WG1193520
0.331
1.00 1
11/08/201815:45
WG1193520
0.352
1.00 1
11/08/201815:45
WG1193520
0.380
1.00 1
11/08/201815:45
WG1193520
0.469
1.00 1
11/08/201815:45
WG1193520
0.866
5.00 1
11/08/201815:45
WG1193520
0.361
1.00 1
11/08/201815:45
WG1193520
0.365
1.00 1
11/08/201815:45
WG1193520
0.399
1.00 1
11/08/201815:45
WG1193520
0.379
1.00 1
11/08/201815:45
WG1193520
0.348
1.00 1
11/08/201815:45
WG1193520
0.327
1.00 1
11/08/201815:45
WG1193520
0.453
5.00 1
11/08/201815:45
WG1193520
0.324
5.00 1
11/08/201815:45
WG1193520
0.276
2.50 1
11/08/201815:45
WG1193520
0.375
1.00 1
11/08/201815:45
WG1193520
0.351
1.00 1
11/08/201815:45
WG1193520
1.33
5.00 1
11/08/201815:45
WG1193520
0.381
1.00 1
11/08/201815:45
WG1193520
0.346
1.00 1
11/08/201815:45
WG1193520
0.349
1.00 1
11/08/201815:45
WG1193520
0.220
1.00 1
11/08/201815:45
WG1193520
0.274
1.00 1
11/08/201815:45
WG1193520
0.551
5.00 1
11/08/201815:45
WG1193520
0.259
1.00 1
11/08/201815:45
WG1193520
0.361
1.00 1
11/08/201815:45
WG1193520
0.398
1.00 1
11/08/201815:45
WG1193520
0.260
1.00 1
11/08/201815:45
WG1193520
0.396
1.00 1
11/08/201815:45
WG1193520
0.306
1.00 1
11/08/201815:45
WG1193520
0.352
1.00 1
11/08/201815:45
WG1193520
0.366
1.00 1
11/08/201815:45
WG1193520
0.321
1.00 1
11/08/201815:45
WG1193520
0.320
1.00 1
11/08/201815:45
WG1193520
0.384
1.00 1
11/08/201815:45
WG1193520
0.256
1.00 1
11/08/201815:45
WG1193520
0.326
1.00 1
11/08/201815:45
WG1193520
0.350
1.00 1
11/08/201815:45
WG1193520
3.93
10.0 1
11/08/201815:45
WG1193520
1.00
5.00 1
11/08/201815:45
WG1193520
2.14
10.0 1
11/08/201815:45
WG1193520
0.367
1.00 1
11/08/201815:45
WG1193520
1.00
5.00 1
11/08/201815:45
WG1193520
0.349
1.00 1
11/08/201815:45
WG1193520
0.307
1.00 1
11/08/201815:45
WG1193520
0.385
1.00 1
11/08/201815:45
WG1193520
0.130
1.00 1
11/08/201815:45
WG1193520
0.372
1.00 1
11/08/201815:45
WG1193520
0.412
1.00 1
11/08/201815:45
WG1193520
0.230
1.00 1
11/08/201815:45
WG1193520
0.355
1.00 1
11/08/201815:45
WG1193520
0.319
1.00 1
11/08/201815:45
WG1193520
0.383
1.00 1
11/08/201815:45
WG1193520
0.398
1.00 1
11/08/201815:45
WG1193520
PROJECT:
SDG:
DATE/TIME:
23056
L1041993
11/13/18 16:34
FP1
FTc
FSS
4
Cn
FC]
F q,
FAI
FSC
PAGE:
8 of 34

ONE LAB. NATIONWIDE.
MW-2 SAMPLE RESULTS - 02
Collected date/time: 11/06/18 12:20 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Analyte
Trichlorofluoromethane
1,2,3-Trichloropropane
1,2,4-Tri methyl ben zen e
1,3,5-Trim ethyl benzene
Vinyl chloride
o-Xylene
m&p-Xylenes
(S) Toluene-d8
(S) Dibromofluoromethane
(S) a, a, a-Trifluoroto/uene
(S) 4-Bromof/uorobenzene
Result
Qualifier MDL
RDL
Dilution Analysis
ug/I
ug/I
ug/I
date / time
U
1.20
5.00
1 11/08/201815:45
U
0.807
2.50
1 11/08/201815:45
U
0.373
1.00
1 11/08/201815:45
U
0.387
1.00
1 11/08/201815:45
U
0.259
1.00
1 11/08/201815:45
U
0.341
1.00
1 11/08/201815:45
U
0.719
2.00
1 11/08/201815:45
103
80.0-120
111081201815.45
90.9
75.0-120
111081201815:45
105
80.0-120
111081201815.45
94.7
77.0-126
111081201815:45
Batch
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
Fp
FTc
FS
Fn
N
Fc
F,
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 9 of 34

MW-4 SAMPLE RESULTS - 03 ONE LAB. NATIONWIDE.
Collected date/time: 11/06/18 12:00 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result
Analyte ug/I
Acetone U
Acrolein U
Acrylonitrile U
Benzene U
Bromobenzene U
Bromodichloromethane U
Bromoform U
Bromomethane U
n-Butylbenzene U
sec -Butyl benzene U
ter[-Butylbenzene U
Carbon tetrachloride U
Chlorobenzene U
Chlorodibromomethane U
Chloroethane U
Chloroform 0.540
Chloromethane U
2-Chlorotoluene U
4-Chlorotoluene U
1,2-Dibromo-3-Chloropropane U
1,2-Dibromoethane U
Dibromomethane U
1,2-Dichlorobenzene U
1,3-Dichlorobenzene U
1,4-Dichlorobenzene U
Dichlorodifluoromethane U
1,1-Dichloroethane U
1,2-Dichloroethane U
1,1-Dichloroethene U
cis-1,2-Dichloroethene U
trans-1,2-Dichloroethene U
1,2-Dichloropropane U
1,1-Dichloropropene U
1,3-Dichloropropane U
2,2-Dichloropropane U
Di -isopropyl ether U
Ethylbenzene U
Hexachloro-1,3-butadiene U
Isopropylbenzene U
p-Isopropyltoluene U
2-Butanone (MEK) U
Methylene Chloride U
4-Methyl-2-pentanone (MIBK) U
Methyl tert-butyl ether U
Naphthalene U
n-Propylbenzene U
Styrene U
1,1,1,2-Tetrachloroethane U
1,1,2,2-Tetrachloroethane U
Tetrachloroethene 3.07
Toluene U
1,2,3-Trichlorobenzene U
1,2,4-Trichlorobenzene U
1,1,1-Trichloroethane U
1,1,2-Trichloroethane U
Trichloroethene U
Qualifier MDL RDL Dilution Analysis Batch
ug/I ug/I date / time
J
ACCOUNT:
Excel Civil & Environmental Associates
10.0
50.0 1
11/08/201816:04
WG1193520
8.87
50.0 1
11/08/201816:04
WG1193520
1.87
10.0 1
11/08/201816:04
WG1193520
0.331
1.00 1
11/08/201816:04
WG1193520
0.352
1.00 1
11/08/201816:04
WG1193520
0.380
1.00 1
11/08/201816:04
WG1193520
0.469
1.00 1
11/08/201816:04
WG1193520
0.866
5.00 1
11/08/201816:04
WG1193520
0.361
1.00 1
11/08/201816:04
WG1193520
0.365
1.00 1
11/08/201816:04
WG1193520
0.399
1.00 1
11/08/201816:04
WG1193520
0.379
1.00 1
11/08/201816:04
WG1193520
0.348
1.00 1
11/08/201816:04
WG1193520
0.327
1.00 1
11/08/201816:04
WG1193520
0.453
5.00 1
11/08/201816:04
WG1193520
0.324
5.00 1
11/08/201816:04
WG1193520
0.276
2.50 1
11/08/201816:04
WG1193520
0.375
1.00 1
11/08/201816:04
WG1193520
0.351
1.00 1
11/08/201816:04
WG1193520
1.33
5.00 1
11/08/201816:04
WG1193520
0.381
1.00 1
11/08/201816:04
WG1193520
0.346
1.00 1
11/08/201816:04
WG1193520
0.349
1.00 1
11/08/201816:04
WG1193520
0.220
1.00 1
11/08/201816:04
WG1193520
0.274
1.00 1
11/08/201816:04
WG1193520
0.551
5.00 1
11/08/201816:04
WG1193520
0.259
1.00 1
11/08/201816:04
WG1193520
0.361
1.00 1
11/08/201816:04
WG1193520
0.398
1.00 1
11/08/201816:04
WG1193520
0.260
1.00 1
11/08/201816:04
WG1193520
0.396
1.00 1
11/08/201816:04
WG1193520
0.306
1.00 1
11/08/201816:04
WG1193520
0.352
1.00 1
11/08/201816:04
WG1193520
0.366
1.00 1
11/08/201816:04
WG1193520
0.321
1.00 1
11/08/201816:04
WG1193520
0.320
1.00 1
11/08/201816:04
WG1193520
0.384
1.00 1
11/08/201816:04
WG1193520
0.256
1.00 1
11/08/201816:04
WG1193520
0.326
1.00 1
11/08/201816:04
WG1193520
0.350
1.00 1
11/08/201816:04
WG1193520
3.93
10.0 1
11/08/201816:04
WG1193520
1.00
5.00 1
11/08/201816:04
WG1193520
2.14
10.0 1
11/08/201816:04
WG1193520
0.367
1.00 1
11/08/201816:04
WG1193520
1.00
5.00 1
11/08/201816:04
WG1193520
0.349
1.00 1
11/08/201816:04
WG1193520
0.307
1.00 1
11/08/201816:04
WG1193520
0.385
1.00 1
11/08/201816:04
WG1193520
0.130
1.00 1
11/08/201816:04
WG1193520
0.372
1.00 1
11/08/201816:04
WG1193520
0.412
1.00 1
11/08/201816:04
WG1193520
0.230
1.00 1
11/08/201816:04
WG1193520
0.355
1.00 1
11/08/201816:04
WG1193520
0.319
1.00 1
11/08/201816:04
WG1193520
0.383
1.00 1
11/08/201816:04
WG1193520
0.398
1.00 1
11/08/201816:04
WG1193520
PROJECT:
SDG:
DATE/TIME:
23056
L1041993
11/13/18 16:34
FP1
FTc
FSS
4
Cn
FC]
F q,
FAI
FSC
PAGE:
10 of 34

ONE LAB. NATIONWIDE.
MW-4 SAMPLE RESULTS - 03
Collected date/time: 11/06/18 12:00 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Analyte
Trichlorofluoromethane
1,2,3-Trichloropropane
1,2,4-Tri methyl ben zen e
1,3,5-Trim ethyl benzene
Vinyl chloride
o-Xylene
m&p-Xylenes
(S) Toluene-d8
(S) Dibromofluoromethane
(S) a, a, a-Trifluoroto/uene
(S) 4-Bromof/uorobenzene
Result
Qualifier MDL
RDL
Dilution Analysis
ug/I
ug/I
ug/I
date / time
U
1.20
5.00
1 11/08/201816:04
U
0.807
2.50
1 11/08/201816:04
U
0.373
1.00
1 11/08/201816:04
U
0.387
1.00
1 11/08/201816:04
U
0.259
1.00
1 11/08/201816:04
U
0.341
1.00
1 11/08/201816:04
U
0.719
2.00
1 11/08/201816:04
107
80.0-120
111081201816.04
90.8
75.0-120
111081201816:04
105
80.0-120
111081201816:04
98.0
77.0-126
111081201816:04
Batch
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
Fp
FTc
FS
Fn
Fc
F,
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 11 of 34

MW-5 SAMPLE RESULTS - 04 ONE LAB. NATIONWIDE.
Collected date/time: 11/06/18 11:30 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result Qualifier
MDL
RDL
Dilution Analysis
Batch
Analyte
ug/I
ug/I
ug/I
date / time
Acetone
U
10.0
50.0
1 11/08/201816:24
WG1193520
Acrolein
U
8.87
50.0
1 11/08/201816:24
WG1193520
Acrylonitrile
U
1.87
10.0
1 11/08/201816:24
WG1193520
Benzene
U
0.331
1.00
1 11/08/201816:24
WG1193520
Bromobenzene
U
0.352
1.00
1 11/08/201816:24
WG1193520
Bromodichloromethane
U
0.380
1.00
1 11/08/201816:24
WG1193520
Bromoform
U
0.469
1.00
1 11/08/201816:24
WG1193520
Bromomethane
U
0.866
5.00
1 11/08/201816:24
WG1193520
n-Butylbenzene
U
0.361
1.00
1 11/08/201816:24
WG1193520
sec -Butyl benzene
U
0.365
1.00
1 11/08/201816:24
WG1193520
ter[-Butylbenzene
U
0.399
1.00
1 11/08/201816:24
WG1193520
Carbon tetrachloride
U
0.379
1.00
1 11/08/201816:24
WG1193520
Chlorobenzene
U
0.348
1.00
1 11/08/201816:24
WG1193520
Chlorodibromomethane
U
0.327
1.00
1 11/08/201816:24
WG1193520
Chloroethane
U
0.453
5.00
1 11/08/201816:24
WG1193520
Chloroform
U
0.324
5.00
1 11/08/201816:24
WG1193520
Chloromethane
U
0.276
2.50
1 11/08/201816:24
WG1193520
2-Chlorotoluene
U
0.375
1.00
1 11/08/201816:24
WG1193520
4-Chlorotoluene
U
0.351
1.00
1 11/08/201816:24
WG1193520
1,2-Dibromo-3-Chloropropane
U
1.33
5.00
1 11/08/201816:24
WG1193520
1,2-Dibromoethane
U
0.381
1.00
1 11/08/201816:24
WG1193520
Dibromomethane
U
0.346
1.00
1 11/08/201816:24
WG1193520
1,2-Dichlorobenzene
U
0.349
1.00
1 11/08/201816:24
WG1193520
1,3-Dichlorobenzene
U
0.220
1.00
1 11/08/201816:24
WG1193520
1,4-Dichlorobenzene
U
0.274
1.00
1 11/08/201816:24
WG1193520
Dichlorodifluoromethane
U
0.551
5.00
1 11/08/201816:24
WG1193520
1,1-Dichloroethane
U
0.259
1.00
1 11/08/201816:24
WG1193520
1,2-Dichloroethane
U
0.361
1.00
1 11/08/201816:24
WG1193520
1,1-Dichloroethene
U
0.398
1.00
1 11/08/201816:24
WG1193520
cis-1,2-Dichloroethene
U
0.260
1.00
1 11/08/201816:24
WG1193520
trans-1,2-Dichloroethene
U
0.396
1.00
1 11/08/201816:24
WG1193520
1,2-Dichloropropane
U
0.306
1.00
1 11/08/201816:24
WG1193520
1,1-Dichloropropene
U
0.352
1.00
1 11/08/201816:24
WG1193520
1,3-Dichloropropane
U
0.366
1.00
1 11/08/201816:24
WG1193520
2,2-Dichloropropane
U
0.321
1.00
1 11/08/201816:24
WG1193520
Di -isopropyl ether
U
0.320
1.00
1 11/08/201816:24
WG1193520
Ethylbenzene
U
0.384
1.00
1 11/08/201816:24
WG1193520
Hexachloro-1,3-butadiene
U
0.256
1.00
1 11/08/201816:24
WG1193520
Isopropylbenzene
U
0.326
1.00
1 11/08/201816:24
WG1193520
p-Isopropyltoluene
U
0.350
1.00
1 11/08/201816:24
WG1193520
2-Butanone (MEK)
U
3.93
10.0
1 11/08/201816:24
WG1193520
Methylene Chloride
U
1.00
5.00
1 11/08/201816:24
WG1193520
4-Methyl-2-pentanone (MIBK)
U
2.14
10.0
1 11/08/201816:24
WG1193520
Methyl tert-butyl ether
U
0.367
1.00
1 11/08/201816:24
WG1193520
Naphthalene
U
1.00
5.00
1 11/08/201816:24
WG1193520
n-Propylbenzene
U
0.349
1.00
1 11/08/201816:24
WG1193520
Styrene
U
0.307
1.00
1 11/08/201816:24
WG1193520
1,1,1,2-Tetrachloroethane
U
0.385
1.00
1 11/08/201816:24
WG1193520
1,1,2,2-Tetrachloroethane
U
0.130
1.00
1 11/08/201816:24
WG1193520
Tetrachloroethene
1.98
0.372
1.00
1 11/08/201816:24
WG1193520
Toluene
U
0.412
1.00
1 11/08/201816:24
WG1193520
1,2,3-Trichlorobenzene
U
0.230
1.00
1 11/08/201816:24
WG1193520
1,2,4-Trichlorobenzene
U
0.355
1.00
1 11/08/201816:24
WG1193520
1,1,1-Trichloroethane
U
0.319
1.00
1 11/08/201816:24
WG1193520
1,1,2-Trichloroethane
U
0.383
1.00
1 11/08/201816:24
WG1193520
Trichloroethene
U
0.398
1.00
1 11/08/201816:24
WG1193520
ACCOUNT:
PROJECT:
SDG:
DATE/TIME:
Excel Civil & Environmental
Associates
23056
L1041993
11/13/18 16:34
FP1
FTc
FSS
4
Cn
FC]
F q,
FAI
FSC
PAGE:
12 of 34

ONE LAB. NATIONWIDE.
MW-5 SAMPLE RESULTS - 04
Collected date/time: 11/06/18 11:30 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Analyte
Trichlorofluoromethane
1,2,3-Trichloropropane
1,2,4-Tri methyl ben zen e
1,3,5-Trim ethyl benzene
Vinyl chloride
o-Xylene
m&p-Xylenes
(S) Toluene-d8
(S) Dibromofluoromethane
(S) a, a, a-Trifluoroto/uene
(S) 4-Bromof/uorobenzene
Result
Qualifier MDL
RDL
Dilution Analysis
ug/I
ug/I
ug/I
date / time
U
1.20
5.00
1 11/08/201816:24
U
0.807
2.50
1 11/08/201816:24
U
0.373
1.00
1 11/08/201816:24
U
0.387
1.00
1 11/08/201816:24
U
0.259
1.00
1 11/08/201816:24
U
0.341
1.00
1 11/08/201816:24
U
0.719
2.00
1 11/08/201816:24
105
80.0-120
111081201816.24
90.8
75.0-120
111081201816:24
105
80.0-120
111081201816.24
95.3
77.0-126
111081201816:24
Batch
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
FP
FTc
FS
Fn
N
Fc
F,
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 13 of 34

M W-7 SAMPLE RESULTS - 05 ONE LAB. NATIONWIDE.
Collected date/time: 11/06/18 10:40 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result Qualifier
MDL
RDL
Dilution Analysis
Batch
Analyte
ug/I
ug/I
ug/I
date / time
Acetone
U
10.0
50.0
1 11/08/201816:43
WG1193520
Acrolein
U
8.87
50.0
1 11/08/201816:43
WG1193520
Acrylonitrile
U
1.87
10.0
1 11/08/201816:43
WG1193520
Benzene
U
0.331
1.00
1 11/08/201816:43
WG1193520
Bromobenzene
U
0.352
1.00
1 11/08/201816:43
WG1193520
Bromodichloromethane
U
0.380
1.00
1 11/08/201816:43
WG1193520
Bromoform
U
0.469
1.00
1 11/08/201816:43
WG1193520
Bromomethane
U
0.866
5.00
1 11/08/201816:43
WG1193520
n-Butylbenzene
U
0.361
1.00
1 11/08/201816:43
WG1193520
sec -Butyl benzene
U
0.365
1.00
1 11/08/201816:43
WG1193520
ter[-Butylbenzene
U
0.399
1.00
1 11/08/201816:43
WG1193520
Carbon tetrachloride
U
0.379
1.00
1 11/08/201816:43
WG1193520
Chlorobenzene
U
0.348
1.00
1 11/08/201816:43
WG1193520
Chlorodibromomethane
U
0.327
1.00
1 11/08/201816:43
WG1193520
Chloroethane
U
0.453
5.00
1 11/08/201816:43
WG1193520
Chloroform
U
0.324
5.00
1 11/08/201816:43
WG1193520
Chloromethane
U
0.276
2.50
1 11/08/201816:43
WG1193520
2-Chlorotoluene
U
0.375
1.00
1 11/08/201816:43
WG1193520
4-Chlorotoluene
U
0.351
1.00
1 11/08/201816:43
WG1193520
1,2-Dibromo-3-Chloropropane
U
1.33
5.00
1 11/08/201816:43
WG1193520
1,2-Dibromoethane
U
0.381
1.00
1 11/08/201816:43
WG1193520
Dibromomethane
U
0.346
1.00
1 11/08/201816:43
WG1193520
1,2-Dichlorobenzene
U
0.349
1.00
1 11/08/201816:43
WG1193520
1,3-Dichlorobenzene
U
0.220
1.00
1 11/08/201816:43
WG1193520
1,4-Dichlorobenzene
U
0.274
1.00
1 11/08/201816:43
WG1193520
Dichlorodifluoromethane
U
0.551
5.00
1 11/08/201816:43
WG1193520
1,1-Dichloroethane
U
0.259
1.00
1 11/08/201816:43
WG1193520
1,2-Dichloroethane
U
0.361
1.00
1 11/08/201816:43
WG1193520
1,1-Dichloroethene
U
0.398
1.00
1 11/08/201816:43
WG1193520
cis-1,2-Dichloroethene
U
0.260
1.00
1 11/08/201816:43
WG1193520
trans-1,2-Dichloroethene
U
0.396
1.00
1 11/08/201816:43
WG1193520
1,2-Dichloropropane
U
0.306
1.00
1 11/08/201816:43
WG1193520
1,1-Dichloropropene
U
0.352
1.00
1 11/08/201816:43
WG1193520
1,3-Dichloropropane
U
0.366
1.00
1 11/08/201816:43
WG1193520
2,2-Dichloropropane
U
0.321
1.00
1 11/08/201816:43
WG1193520
Di -isopropyl ether
U
0.320
1.00
1 11/08/201816:43
WG1193520
Ethylbenzene
U
0.384
1.00
1 11/08/201816:43
WG1193520
Hexachloro-1,3-butadiene
U
0.256
1.00
1 11/08/201816:43
WG1193520
Isopropylbenzene
U
0.326
1.00
1 11/08/201816:43
WG1193520
p-Isopropyltoluene
U
0.350
1.00
1 11/08/201816:43
WG1193520
2-Butanone (MEK)
U
3.93
10.0
1 11/08/201816:43
WG1193520
Methylene Chloride
U
1.00
5.00
1 11/08/201816:43
WG1193520
4-Methyl-2-pentanone (MIBK)
U
2.14
10.0
1 11/08/201816:43
WG1193520
Methyl tert-butyl ether
U
0.367
1.00
1 11/08/201816:43
WG1193520
Naphthalene
U
1.00
5.00
1 11/08/201816:43
WG1193520
n-Propylbenzene
U
0.349
1.00
1 11/08/201816:43
WG1193520
Styrene
U
0.307
1.00
1 11/08/201816:43
WG1193520
1,1,1,2-Tetrachloroethane
U
0.385
1.00
1 11/08/201816:43
WG1193520
1,1,2,2-Tetrachloroethane
U
0.130
1.00
1 11/08/201816:43
WG1193520
Tetrachloroethene
12.9
0.372
1.00
1 11/08/201816:43
WG1193520
Toluene
U
0.412
1.00
1 11/08/201816:43
WG1193520
1,2,3-Trichlorobenzene
U
0.230
1.00
1 11/08/201816:43
WG1193520
1,2,4-Trichlorobenzene
U
0.355
1.00
1 11/08/201816:43
WG1193520
1,1,1-Trichloroethane
U
0.319
1.00
1 11/08/201816:43
WG1193520
1,1,2-Trichloroethane
U
0.383
1.00
1 11/08/201816:43
WG1193520
Trichloroethene
U
0.398
1.00
1 11/08/201816:43
WG1193520
ACCOUNT:
PROJECT:
SDG:
DATE/TIME:
Excel Civil & Environmental
Associates
23056
L1041993
11/13/18 16:34
FP1
FTc
FSS
4
Cn
FC]
F q,
FAI
FSC
PAGE:
14 of 34

ONE LAB. NATIONWIDE.
MW-7 SAMPLE RESULTS - 05
Collected date/time: 11/06/18 10:40 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Analyte
Trichlorofluoromethane
1,2,3-Trichloropropane
1,2,4-Tri methyl ben zen e
1,3,5-Trim ethyl benzene
Vinyl chloride
o-Xylene
m&p-Xylenes
(S) Toluene-d8
(S) Dibromofluoromethane
(S) a, a, a-Trifluoroto/uene
(S) 4-Bromof/uorobenzene
Result
Qualifier MDL
RDL
Dilution Analysis
ug/I
ug/I
ug/I
date / time
U
1.20
5.00
1 11/08/201816:43
U
0.807
2.50
1 11/08/201816:43
U
0.373
1.00
1 11/08/201816:43
U
0.387
1.00
1 11/08/201816:43
U
0.259
1.00
1 11/08/201816:43
U
0.341
1.00
1 11/08/201816:43
U
0.719
2.00
1 11/08/201816:43
106
80.0-120
111081201816.43
92.1
75.0-120
111081201816.43
104
80.0-120
111081201816.43
96.6
77.0-126
111081201816.43
Batch
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
Fp
FTc
FS
Fn
Fc
F,
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 15 of 34

MW-8 SAMPLE RESULTS - 06 ONE LAB. NATIONWIDE.
Collected date/time: 11/06/18 11:45 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result
Analyte ug/I
Acetone U
Acrolein U
Acrylonitrile U
Benzene 16.6
Bromobenzene U
Bromodichloromethane U
Bromoform U
Bromomethane U
n-Butylbenzene 25.8
sec -Butyl benzene 18.5
ter[-Butylbenzene 0.542
Carbon tetrachloride U
Chlorobenzene U
Chlorodibromomethane U
Chloroethane U
Chloroform U
Chloromethane U
2-Chlorotoluene U
4-Chlorotoluene U
1,2-Dibromo-3-Chloropropane U
1,2-Dibromoethane U
Dibromomethane U
1,2-Dichlorobenzene U
1,3-Dichlorobenzene U
1,4-Dichlorobenzene U
Dichlorodifluoromethane U
1,1-Dichloroethane U
1,2-Dichloroethane U
1,1-Dichloroethene U
cis-1,2-Dichloroethene U
trans-1,2-Dichloroethene U
1,2-Dichloropropane U
1,1-Dichloropropene U
1,3-Dichloropropane U
2,2-Dichloropropane U
Di -isopropyl ether U
Ethylbenzene 118
Hexachloro-1,3-butadiene U
Isopropylbenzene 39.5
p-Isopropyltoluene 7.42
2-Butanone (MEK) U
Methylene Chloride U
4-Methyl-2-pentanone (MIBK) U
Methyl tert-butyl ether U
Naphthalene 184
n-Propylbenzene 117
Styrene U
1,1,1,2-Tetrachloroethane U
1,1,2,2-Tetrachloroethane U
Tetrachloroethene U
Toluene 4.31
1,2,3-Trichlorobenzene U
1,2,4-Trichlorobenzene U
1,1,1-Trichloroethane U
1,1,2-Trichloroethane U
Trichloroethene U
Qualifier MDL RDL Dilution Analysis
ug/I ug/I date / time
J
ACCOUNT:
Excel Civil & Environmental Associates
Batch
10.0
50.0
1 11/08/201817:02
WG1193520
8.87
50.0
1 11/08/201817:02
WG1193520
1.87
10.0
1 11/08/201817:02
WG1193520
0.331
1.00
1 11/08/201817:02
WG1193520
0.352
1.00
1 11/08/201817:02
WG1193520
0.380
1.00
1 11/08/201817:02
WG1193520
0.469
1.00
1 11/08/201817:02
WG1193520
0.866
5.00
1 11/08/201817:02
WG1193520
0.361
1.00
1 11/08/201817:02
WG1193520
0.365
1.00
1 11/08/201817:02
WG1193520
0.399
1.00
1 11/08/201817:02
WG1193520
0.379
1.00
1 11/08/201817:02
WG1193520
0.348
1.00
1 11/08/201817:02
WG1193520
0.327
1.00
1 11/08/201817:02
WG1193520
0.453
5.00
1 11/08/201817:02
WG1193520
0.324
5.00
1 11/08/201817:02
WG1193520
0.276
2.50
1 11/08/201817:02
WG1193520
0.375
1.00
1 11/08/201817:02
WG1193520
0.351
1.00
1 11/08/201817:02
WG1193520
1.33
5.00
1 11/08/201817:02
WG1193520
0.381
1.00
1 11/08/201817:02
WG1193520
0.346
1.00
1 11/08/201817:02
WG1193520
0.349
1.00
1 11/08/201817:02
WG1193520
0.220
1.00
1 11/08/201817:02
WG1193520
0.274
1.00
1 11/08/201817:02
WG1193520
0.551
5.00
1 11/08/201817:02
WG1193520
0.259
1.00
1 11/08/201817:02
WG1193520
0.361
1.00
1 11/08/201817:02
WG1193520
0.398
1.00
1 11/08/201817:02
WG1193520
0.260
1.00
1 11/08/201817:02
WG1193520
0.396
1.00
1 11/08/201817:02
WG1193520
0.306
1.00
1 11/08/201817:02
WG1193520
0.352
1.00
1 11/08/201817:02
WG1193520
0.366
1.00
1 11/08/201817:02
WG1193520
0.321
1.00
1 11/08/201817:02
WG1193520
0.320
1.00
1 11/08/201817:02
WG1193520
0.384
1.00
1 11/08/201817:02
WG1193520
0.256
1.00
1 11/08/201817:02
WG1193520
0.326
1.00
1 11/08/201817:02
WG1193520
0.350
1.00
1 11/08/201817:02
WG1193520
3.93
10.0
1 11/08/201817:02
WG1193520
1.00
5.00
1 11/08/201817:02
WG1193520
2.14
10.0
1 11/08/201817:02
WG1193520
0.367
1.00
1 11/08/201817:02
WG1193520
25.0
125
25 11/09/201817:00
WG1193906
0.349
1.00
1 11/08/201817:02
WG1193520
0.307
1.00
1 11/08/201817:02
WG1193520
0.385
1.00
1 11/08/201817:02
WG1193520
0.130
1.00
1 11/08/201817:02
WG1193520
0.372
1.00
1 11/08/201817:02
WG1193520
0.412
1.00
1 11/08/201817:02
WG1193520
0.230
1.00
1 11/08/201817:02
WG1193520
0.355
1.00
1 11/08/201817:02
WG1193520
0.319
1.00
1 11/08/201817:02
WG1193520
0.383
1.00
1 11/08/201817:02
WG1193520
0.398
1.00
1 11/08/201817:02
WG1193520
PROJECT:
SDG:
DATE/TIME:
23056
L1041993
11/13/18 16:34
FP1
FTc
FSS
4
Cn
FC]
F
FAI
FSC
PAGE:
16 of 34

ONE LAB. NATIONWIDE.
MW-8 SAMPLE RESULTS - 06
Collected date/time: 11/06/18 11:45 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Analyte
Trichlorofluoromethane
1,2,3-Trichloropropane
1,2,4-Tri methyl ben zen e
1,3,5-Trim ethyl benzene
Vinyl chloride
o-Xylene
m&p-Xylenes
(S) Toluene-d8
(S) Toluene-d8
(S) Dibromofluoromethane
(S) Dibromofluoromethane
(S) a, a,o-Trifluoroto/uene
(S) a,a,a-Trifluorotoluene
(S) 4-Bromof/uorobenzene
(S) 4-Bromof/uorobenzene
Result
ug/I
Qualifier MDL
ug/I
RDL
ug/I
Dilution Analysis
date / time
U
1.20
5.00
1 11/08/201817:02
IJ
0.807
2.50
1 11/08/201817:02
842
9.32
25.0
25 11/09/201817:00
138
0.387
1.00
1 11/08/201817:02
U
0.259
1.00
1 11/08/201817:02
146
0.341
1.00
1 11/08/201817:02
284
0.719
2.00
1 11/08/201817:02
106
80.0-120
111081201817:02
103
80.0-120
11109120181700
88.9
75.0-120
111081201817:02
100
75.0-120
11109120181700
106
80.0-120
111081201817:02
103
80.0-120
11109120181700
91.2
77.0-126
111081201817:02
106
77.0-126
11109120181700
Batch
WG1193520
WG1193520
WG1193906
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193906
WG1193520
WG1193906
WG1193520
WG1193906
WG1193520
WG1193906
FP
FTc
FS
Fn
N
FC]
F
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 17 of 34

MW-9 SAMPLE RESULTS - 07 ONE LAB. NATIONWIDE.
Collected date/time: 11/06/18 10:26 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result
Qualifier
MDL
RDL
Dilution Analysis
Batch
Analyte
ug/I
ug/I
ug/I
date / time
Acetone
11.7
J
10.0
50.0
1 11/08/201817:22
WG1193520
Acrolein
U
8.87
50.0
1 11/08/201817:22
WG1193520
Acrylonitrile
U
1.87
10.0
1 11/08/201817:22
WG1193520
Benzene
1.45
0.331
1.00
1 11/08/201817:22
WG1193520
Bromobenzene
U
0.352
1.00
1 11/08/201817:22
WG1193520
Bromodichloromethane
U
0.380
1.00
1 11/08/201817:22
WG1193520
Bromoform
U
0.469
1.00
1 11/08/201817:22
WG1193520
Bromomethane
U
0.866
5.00
1 11/08/201817:22
WG1193520
n-Butylbenzene
0.444
J
0.361
1.00
1 11/08/201817:22
WG1193520
sec -Butyl benzene
0.663
J
0.365
1.00
1 11/08/201817:22
WG1193520
ter[-Butylbenzene
U
0.399
1.00
1 11/08/201817:22
WG1193520
Carbon tetrachloride
U
0.379
1.00
1 11/08/201817:22
WG1193520
Chlorobenzene
U
0.348
1.00
1 11/08/201817:22
WG1193520
Chlorodibromomethane
U
0.327
1.00
1 11/08/201817:22
WG1193520
Chloroethane
U
0.453
5.00
1 11/08/201817:22
WG1193520
Chloroform
U
0.324
5.00
1 11/08/201817:22
WG1193520
Chloromethane
U
0.276
2.50
1 11/08/201817:22
WG1193520
2-Chlorotoluene
U
0.375
1.00
1 11/08/201817:22
WG1193520
4-Chlorotoluene
U
0.351
1.00
1 11/08/201817:22
WG1193520
1,2-Dibromo-3-Chloropropane
U
1.33
5.00
1 11/08/201817:22
WG1193520
1,2-Dibromoethane
U
0.381
1.00
1 11/08/201817:22
WG1193520
Dibromomethane
U
0.346
1.00
1 11/08/201817:22
WG1193520
1,2-Dichlorobenzene
U
0.349
1.00
1 11/08/201817:22
WG1193520
1,3-Dichlorobenzene
U
0.220
1.00
1 11/08/201817:22
WG1193520
1,4-Dichlorobenzene
U
0.274
1.00
1 11/08/201817:22
WG1193520
Dichlorodifluoromethane
U
0.551
5.00
1 11/08/201817:22
WG1193520
1,1-Dichloroethane
U
0.259
1.00
1 11/08/201817:22
WG1193520
1,2-Dichloroethane
U
0.361
1.00
1 11/08/201817:22
WG1193520
1,1-Dichloroethene
U
0.398
1.00
1 11/08/201817:22
WG1193520
cis-1,2-Dichloroethene
0.285
J
0.260
1.00
1 11/08/201817:22
WG1193520
trans-1,2-Dichloroethene
U
0.396
1.00
1 11/08/201817:22
WG1193520
1,2-Dichloropropane
U
0.306
1.00
1 11/08/201817:22
WG1193520
1,1-Dichloropropene
U
0.352
1.00
1 11/08/201817:22
WG1193520
1,3-Dichloropropane
U
0.366
1.00
1 11/08/201817:22
WG1193520
2,2-Dichloropropane
U
0.321
1.00
1 11/08/201817:22
WG1193520
Di -isopropyl ether
4.26
0.320
1.00
1 11/08/201817:22
WG1193520
Ethylbenzene
1.06
0.384
1.00
1 11/08/201817:22
WG1193520
Hexachloro-1,3-butadiene
U
0.256
1.00
1 11/08/201817:22
WG1193520
Isopropylbenzene
0.697
J
0.326
1.00
1 11/08/201817:22
WG1193520
p-Isopropyltoluene
U
0.350
1.00
1 11/08/201817:22
WG1193520
2-Butanone (MEK)
U
3.93
10.0
1 11/08/201817:22
WG1193520
Methylene Chloride
U
1.00
5.00
1 11/08/201817:22
WG1193520
4-Methyl-2-pentanone (MIBK)
U
2.14
10.0
1 11/08/201817:22
WG1193520
Methyl tert-butyl ether
132
0.367
1.00
1 11/08/201817:22
WG1193520
Naphthalene
1.17
J
1.00
5.00
1 11/09/201817:18
WG1193906
n-Propylbenzene
0.456
J
0.349
1.00
1 11/08/201817:22
WG1193520
Styrene
U
0.307
1.00
1 11/08/201817:22
WG1193520
1,1,1,2-Tetrachloroethane
U
0.385
1.00
1 11/08/201817:22
WG1193520
1,1,2,2-Tetrachloroethane
U
0.130
1.00
1 11/08/201817:22
WG1193520
Tetrachloroethene
1.22
0.372
1.00
1 11/08/201817:22
WG1193520
Toluene
0.766
J
0.412
1.00
1 11/08/201817:22
WG1193520
1,2,3-Trichlorobenzene
U
0.230
1.00
1 11/08/201817:22
WG1193520
1,2,4-Trichlorobenzene
U
0.355
1.00
1 11/08/201817:22
WG1193520
1,1,1-Trichloroethane
U
0.319
1.00
1 11/08/201817:22
WG1193520
1,1,2-Trichloroethane
U
0.383
1.00
1 11/08/201817:22
WG1193520
Trichloroethene
U
0.398
1.00
1 11/08/201817:22
WG1193520
ACCOUNT:
PROJECT:
SDG:
DATE/TIME:
Excel Civil & Environmental
Associates
23056
L1041993
11/13/18 16:34
FP1
FTc
FSS
4
Cn
FC]
F q,
FAI
FSC
PAGE:
18 of 34

ONE LAB. NATIONWIDE.
MW-9 SAMPLE RESULTS - 07
Collected date/time: 11/06/18 10:26 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result
Qualifier
MDL
RDL
Dilution Analysis
Analyte
ug/I
ug/I
ug/I
date / time
Trichlorofluoromethane
U
1.20
5.00
1 11/08/201817:22
1,2,3-Trichloropropane
U
0.807
2.50
1 11/08/201817:22
1,2,4-Trimethylbenzene
0.875
J
0.373
1.00
1 11/09/201817:18
1,3,5-Trimethyl benzene
0.615
J_
0.387
1.00
1 11/08/201817:22
Vinyl chloride
U
0.259
1.00
1 11/08/201817:22
o-Xylene
0.371
J
0.341
1.00
1 11/08/201817:22
m&p-Xylenes
0.916
J
0.719
2.00
1 11/08/201817:22
(S) Toluene-d8
105
80.0-120
111081201817:22
(S Toluene-d8
102
80.0-120
11109120181718
(S) Dibromofluoromethane
90.5
75.0-120
111081201817:22
(S Dibromofluoromethane
103
75.0-120
11109120181718
(S) a, a,o-Trifluoroto/uene
104
80.0-120
111081201817:22
(S a,a,a-Trifluorotoluene
102
80.0-120
11109120181718
(S) 4-Bromof/uorobenzene
94.3
77.0-126
111081201817:22
(S 4-Bromof/uorobenzene
104
77.0-126
11109120181718
Batch
WG1193520
WG1193520
WG1193906
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193906
WG1193520
WG1193906
WG1193520
WG1193906
WG1193520
WG1193906
Fp
FTc
FS
Fn
FC]
F
FAI
FSC
ACCOUNT: PROJECT: SDG:
Excel Civil & Environmental Associates 23056 L1041993
DATE/TIME: PAGE:
11/13/18 16:34 19 of 34

M W-10 R SAMPLE RESULTS - 08 ONE LAB. NATIONWIDE.
Collected date/time: 11/06/18 10:34 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result
Analyte ug/I
Acetone U
Acrolein U
Acrylonitrile U
Benzene 932
Bromobenzene U
Bromodichloromethane U
Bromoform U
Bromomethane U
n-Butylbenzene 14.4
sec -Butyl benzene 7.95
ter[-Butylbenzene U
Carbon tetrachloride U
Chlorobenzene U
Chlorodibromomethane U
Chloroethane U
Chloroform U
Chloromethane U
2-Chlorotoluene U
4-Chlorotoluene U
1,2-Dibromo-3-Chloropropane U
1,2-Dibromoethane U
Dibromomethane U
1,2-Dichlorobenzene U
1,3-Dichlorobenzene U
1,4-Dichlorobenzene U
Dichlorodifluoromethane U
1,1-Dichloroethane U
1,2-Dichloroethane U
1,1-Dichloroethene U
cis-1,2-Dichloroethene U
trans-1,2-Dichloroethene U
1,2-Dichloropropane U
1,1-Dichloropropene U
1,3-Dichloropropane U
2,2-Dichloropropane U
Di -isopropyl ether U
Ethylbenzene 1800
Hexachloro-1,3-butadiene U
Isopropylbenzene 66.1
p-Isopropyltoluene 4.70
2-Butanone (MEK) U
Methylene Chloride U
4-Methyl-2-pentanone (MIBK) 8.27
Methyl tert-butyl ether 24.9
Naphthalene 591
n-Propylbenzene 189
Styrene U
1,1,1,2-Tetrachloroethane U
1,1,2,2-Tetrachloroethane U
Tetrachloroethene U
Toluene 2980
1,2,3-Trichlorobenzene U
1,2,4-Trichlorobenzene U
1,1,1-Trichloroethane U
1,1,2-Trichloroethane U
Trichloroethene U
Qualifier MDL RDL Dilution Analysis Batch
ug/I ug/I date / time
J
ACCOUNT:
Excel Civil & Environmental Associates
10.0
50.0
1
11/08/201817:41
WG1193520
8.87
50.0
1
11/08/201817:41
WG1193520
1.87
10.0
1
11/08/201817:41
WG1193520
33.1
100
100
11/09/201817:37
WG1193906
0.352
1.00
1
11/08/201817:41
WG1193520
0.380
1.00
1
11/08/201817:41
WG1193520
0.469
1.00
1
11/08/201817:41
WG1193520
0.866
5.00
1
11/08/201817:41
WG1193520
0.361
1.00
1
11/08/201817:41
WG1193520
0.365
1.00
1
11/08/201817:41
WG1193520
0.399
1.00
1
11/08/201817:41
WG1193520
0.379
1.00
1
11/08/201817:41
WG1193520
0.348
1.00
1
11/08/201817:41
WG1193520
0.327
1.00
1
11/08/201817:41
WG1193520
0.453
5.00
1
11/08/201817:41
WG1193520
0.324
5.00
1
11/08/201817:41
WG1193520
0.276
2.50
1
11/08/201817:41
WG1193520
0.375
1.00
1
11/08/201817:41
WG1193520
0.351
1.00
1
11/08/201817:41
WG1193520
1.33
5.00
1
11/08/201817:41
WG1193520
0.381
1.00
1
11/08/201817:41
WG1193520
0.346
1.00
1
11/08/201817:41
WG1193520
0.349
1.00
1
11/08/201817:41
WG1193520
0.220
1.00
1
11/08/201817:41
WG1193520
0.274
1.00
1
11/08/201817:41
WG1193520
0.551
5.00
1
11/08/201817:41
WG1193520
0.259
1.00
1
11/08/201817:41
WG1193520
0.361
1.00
1
11/08/201817:41
WG1193520
0.398
1.00
1
11/08/201817:41
WG1193520
0.260
1.00
1
11/08/201817:41
WG1193520
0.396
1.00
1
11/08/201817:41
WG1193520
0.306
1.00
1
11/08/201817:41
WG1193520
0.352
1.00
1
11/08/201817:41
WG1193520
0.366
1.00
1
11/08/201817:41
WG1193520
0.321
1.00
1
11/08/201817:41
WG1193520
0.320
1.00
1
11/08/201817:41
WG1193520
38.4
100
100
11/09/201817:37
WG1193906
0.256
1.00
1
11/08/201817:41
WG1193520
0.326
1.00
1
11/08/201817:41
WG1193520
0.350
1.00
1
11/08/201817:41
WG1193520
3.93
10.0
1
11/08/201817:41
WG1193520
1.00
5.00
1
11/08/201817:41
WG1193520
2.14
10.0
1
11/08/201817:41
WG1193520
0.367
1.00
1
11/08/201817:41
WG1193520
100
500
100
11/09/201817:37
WG1193906
0.349
1.00
1
11/08/201817:41
WG1193520
0.307
1.00
1
11/08/201817:41
WG1193520
0.385
1.00
1
11/08/201817:41
WG1193520
0.130
1.00
1
11/08/201817:41
WG1193520
0.372
1.00
1
11/08/201817:41
WG1193520
41.2
100
100
11/09/201817:37
WG1193906
0.230
1.00
1
11/08/201817:41
WG1193520
0.355
1.00
1
11/08/201817:41
WG1193520
0.319
1.00
1
11/08/201817:41
WG1193520
0.383
1.00
1
11/08/201817:41
WG1193520
0.398
1.00
1
11/08/201817:41
WG1193520
PROJECT:
SDG:
DATE/TIME:
23056
L1041993
11/13/18 16:34
FP1
FTc
FSS
4
Cn
FC]
F q,
FAI
FSC
PAGE:
20 of 34

ONE LAB. NATIONWIDE.
MW-10R SAMPLE RESULTS - 08
Collected date/time: 11/06/18 10:34 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Analyte
Trichlorofluoromethane
1,2,3-Trichloropropane
1,2,4-Tri methyl ben zen e
1,3,5-Trim ethyl benzene
Vinyl chloride
o-Xylene
m&p-Xylenes
(S) Toluene-d8
(S) Toluene-d8
(S) Dibromofluoromethane
(S) Dibromofluoromethane
(S) a, a,o-Trifluoroto/uene
(S) a,a,a-Trifluorotoluene
(S) 4-Bromof/uorobenzene
(S) 4-Bromof/uorobenzene
Result
ug/I
Qualifier MDL
ug/I
RDL
ug/I
Dilution
Analysis
date / time
U
1.20
5.00
1
11/08/201817:41
J
0.807
2.50
1
11/08/201817:41
2070
37.3
100
100
11/09/201817:37
565
38.7
100
100
11/09/201817:37
U
0.259
1.00
1
11/08/201817:41
3350
34.1
100
100
11/09/201817:37
7430
71.9
200
100
11/09/201817:37
97.5
80.0-120
111081201817.41
101
80.0-120
11109120181737
93.4
75.0-120
111081201817.41
102
75.0-120
11109120181737
109
80.0-120
111081201817.41
104
80.0-120
11109120181737
97.2
77.0-126
111081201817.41
103
77.0-126
111091201817.37
Batch
WG1193520
WG1193520
WG1193906
WG1193906
WG1193520
WG1193906
WG1193906
WG1193520
WG1193906
WG1193520
WG1193906
WG1193520
WG1193906
WG1193520
WG1193906
Fp
FTc
FS
Fn
N
FC]
F
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 21 of 34

MW-12 SAMPLE RESULTS - 09 ONE LAB. NATIONWIDE.
Collected date/time: 11/06/18 10:50 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result
Analyte ug/I
Acetone U
Acrolein U
Acrylonitrile U
Benzene U
Bromobenzene U
Bromodichloromethane U
Bromoform U
Bromomethane U
n-Butylbenzene U
sec -Butyl benzene U
ter[-Butylbenzene U
Carbon tetrachloride U
Chlorobenzene U
Chlorodibromomethane U
Chloroethane U
Chloroform U
Chloromethane U
2-Chlorotoluene U
4-Chlorotoluene U
1,2-Dibromo-3-Chloropropane U
1,2-Dibromoethane U
Dibromomethane U
1,2-Dichlorobenzene U
1,3-Dichlorobenzene U
1,4-Dichlorobenzene U
Dichlorodifluoromethane U
1,1-Dichloroethane U
1,2-Dichloroethane U
1,1-Dichloroethene U
cis-1,2-Dichloroethene U
trans-1,2-Dichloroethene U
1,2-Dichloropropane U
1,1-Dichloropropene U
1,3-Dichloropropane U
2,2-Dichloropropane U
Di -isopropyl ether 0.955
Ethylbenzene U
Hexachloro-1,3-butadiene U
Isopropylbenzene U
p-Isopropyltoluene U
2-Butanone (MEK) U
Methylene Chloride U
4-Methyl-2-pentanone (MIBK) U
Methyl tert-butyl ether 14.0
Naphthalene U
n-Propylbenzene 0.458
Styrene U
1,1,1,2-Tetrachloroethane U
1,1,2,2-Tetrachloroethane U
Tetrachloroethene U
Toluene U
1,2,3-Trichlorobenzene U
1,2,4-Trichlorobenzene U
1,1,1-Trichloroethane U
1,1,2-Trichloroethane U
Trichloroethene U
Qualifier MDL RDL Dilution Analysis Batch
ug/I ug/I date / time
J
J
ACCOUNT:
Excel Civil & Environmental Associates
10.0
50.0 1
11/08/201818:01
WG1193520
8.87
50.0 1
11/08/201818:01
WG1193520
1.87
10.0 1
11/08/201818:01
WG1193520
0.331
1.00 1
11/08/201818:01
WG1193520
0.352
1.00 1
11/08/201818:01
WG1193520
0.380
1.00 1
11/08/201818:01
WG1193520
0.469
1.00 1
11/08/201818:01
WG1193520
0.866
5.00 1
11/08/201818:01
WG1193520
0.361
1.00 1
11/08/201818:01
WG1193520
0.365
1.00 1
11/08/201818:01
WG1193520
0.399
1.00 1
11/08/201818:01
WG1193520
0.379
1.00 1
11/08/201818:01
WG1193520
0.348
1.00 1
11/08/201818:01
WG1193520
0.327
1.00 1
11/08/201818:01
WG1193520
0.453
5.00 1
11/08/201818:01
WG1193520
0.324
5.00 1
11/08/201818:01
WG1193520
0.276
2.50 1
11/08/201818:01
WG1193520
0.375
1.00 1
11/08/201818:01
WG1193520
0.351
1.00 1
11/08/201818:01
WG1193520
1.33
5.00 1
11/08/201818:01
WG1193520
0.381
1.00 1
11/08/201818:01
WG1193520
0.346
1.00 1
11/08/201818:01
WG1193520
0.349
1.00 1
11/08/201818:01
WG1193520
0.220
1.00 1
11/08/201818:01
WG1193520
0.274
1.00 1
11/08/201818:01
WG1193520
0.551
5.00 1
11/08/201818:01
WG1193520
0.259
1.00 1
11/08/201818:01
WG1193520
0.361
1.00 1
11/08/201818:01
WG1193520
0.398
1.00 1
11/08/201818:01
WG1193520
0.260
1.00 1
11/08/201818:01
WG1193520
0.396
1.00 1
11/08/201818:01
WG1193520
0.306
1.00 1
11/08/201818:01
WG1193520
0.352
1.00 1
11/08/201818:01
WG1193520
0.366
1.00 1
11/08/201818:01
WG1193520
0.321
1.00 1
11/08/201818:01
WG1193520
0.320
1.00 1
11/08/201818:01
WG1193520
0.384
1.00 1
11/09/201817:56
WG1193906
0.256
1.00 1
11/08/201818:01
WG1193520
0.326
1.00 1
11/08/201818:01
WG1193520
0.350
1.00 1
11/08/201818:01
WG1193520
3.93
10.0 1
11/08/201818:01
WG1193520
1.00
5.00 1
11/08/201818:01
WG1193520
2.14
10.0 1
11/08/201818:01
WG1193520
0.367
1.00 1
11/08/201818:01
WG1193520
1.00
5.00 1
11/09/201817:56
WG1193906
0.349
1.00 1
11/08/201818:01
WG1193520
0.307
1.00 1
11/08/201818:01
WG1193520
0.385
1.00 1
11/08/201818:01
WG1193520
0.130
1.00 1
11/08/201818:01
WG1193520
0.372
1.00 1
11/08/201818:01
WG1193520
0.412
1.00 1
11/09/201817:56
WG1193906
0.230
1.00 1
11/08/201818:01
WG1193520
0.355
1.00 1
11/08/201818:01
WG1193520
0.319
1.00 1
11/08/201818:01
WG1193520
0.383
1.00 1
11/08/201818:01
WG1193520
0.398
1.00 1
11/08/201818:01
WG1193520
PROJECT:
SDG:
DATE/TIME:
23056
L1041993
11/13/18 16:34
FP1
FTc
FSS
4
Cn
FC]
F q,
FAI
FSC
PAGE:
22 of 34

ONE LAB. NATIONWIDE.
MW-12 SAMPLE RESULTS - 09
Collected date/time: 11/06/18 10:50 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Analyte
Trichlorofluoromethane
1,2,3-Trichloropropane
1,2,4-Tri methyl ben zen e
1,3,5-Trim ethyl benzene
Vinyl chloride
o-Xylene
m&p-Xylenes
(S) Toluene-d8
(S) Toluene-d8
(S) Dibromofluoromethane
(S) Dibromofluoromethane
(S) a, a,o-Trifluoroto/uene
(S) a,a,a-Trifluorotoluene
(S) 4-Bromof/uorobenzene
(S) 4-Bromof/uorobenzene
Result
Qualifier MDL
RDL
Dilution Analysis
ug/I
ug/I
ug/I
date / time
U
1.20
5.00
1 11/08/201818:01
U
0.807
2.50
1 11/08/201818:01
U
0.373
1.00
1 11/09/201817:56
U
0.387
1.00
1 11/09/201817:56
U
0.259
1.00
1 11/08/201818:01
U
0.341
1.00
1 11/09/201817:56
U
0.719
2.00
1 11/09/201817:56
107
80.0-120
111081201818.01
102
80.0-120
1110912018 1756
88.6
75.0-120
111081201818.01
103
75.0-120
1110912018 1756
105
80.0-120
111081201818.01
103
80.0-120
1110912018 1756
94.5
77.0-126
111081201818.01
106
77.0-126
1110912018 1756
Batch
WG1193520
WG1193520
WG1193906
WG1193906
WG1193520
WG1193906
WG1193906
WG1193520
WG1193906
WG1193520
WG1193906
WG1193520
WG1193906
WG1193520
WG1193906
Fp
FTc
FS
Fn
N
FC]
F
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 23 of 34

TRIP BLANK SAMPLE RESULTS - 10 ONE LAB. NATIONWIDE.
Collected date/time: 11/06/18 00:00 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Result Qualifier
MDL
RDL
Dilution Analysis
Batch
Analyte
ug/I
ug/I
ug/I
date / time
Acetone
U
10.0
50.0
1 11/08/201814:08
WG1193520
Acrolein
U
8.87
50.0
1 11/08/201814:08
WG1193520
Acrylonitrile
U
1.87
10.0
1 11/08/201814:08
WG1193520
Benzene
U
0.331
1.00
1 11/08/201814:08
WG1193520
Bromobenzene
U
0.352
1.00
1 11/08/201814:08
WG1193520
Bromodichloromethane
U
0.380
1.00
1 11/08/201814:08
WG1193520
Bromoform
U
0.469
1.00
1 11/08/201814:08
WG1193520
Bromomethane
U
0.866
5.00
1 11/08/201814:08
WG1193520
n-Butylbenzene
U
0.361
1.00
1 11/08/201814:08
WG1193520
sec -Butyl benzene
U
0.365
1.00
1 11/08/201814:08
WG1193520
ter[-Butylbenzene
U
0.399
1.00
1 11/08/201814:08
WG1193520
Carbon tetrachloride
U
0.379
1.00
1 11/08/201814:08
WG1193520
Chlorobenzene
U
0.348
1.00
1 11/08/201814:08
WG1193520
Chlorodibromomethane
U
0.327
1.00
1 11/08/201814:08
WG1193520
Chloroethane
U
0.453
5.00
1 11/08/201814:08
WG1193520
Chloroform
U
0.324
5.00
1 11/08/201814:08
WG1193520
Chloromethane
U
0.276
2.50
1 11/08/201814:08
WG1193520
2-Chlorotoluene
U
0.375
1.00
1 11/08/201814:08
WG1193520
4-Chlorotoluene
U
0.351
1.00
1 11/08/201814:08
WG1193520
1,2-Dibromo-3-Chloropropane
U
1.33
5.00
1 11/08/201814:08
WG1193520
1,2-Dibromoethane
U
0.381
1.00
1 11/08/201814:08
WG1193520
Dibromomethane
U
0.346
1.00
1 11/08/201814:08
WG1193520
1,2-Dichlorobenzene
U
0.349
1.00
1 11/08/201814:08
WG1193520
1,3-Dichlorobenzene
U
0.220
1.00
1 11/08/201814:08
WG1193520
1,4-Dichlorobenzene
U
0.274
1.00
1 11/08/201814:08
WG1193520
Dichlorodifluoromethane
U
0.551
5.00
1 11/08/201814:08
WG1193520
1,1-Dichloroethane
U
0.259
1.00
1 11/08/201814:08
WG1193520
1,2-Dichloroethane
U
0.361
1.00
1 11/08/201814:08
WG1193520
1,1-Dichloroethene
U
0.398
1.00
1 11/08/201814:08
WG1193520
cis-1,2-Dichloroethene
U
0.260
1.00
1 11/08/201814:08
WG1193520
trans-1,2-Dichloroethene
U
0.396
1.00
1 11/08/201814:08
WG1193520
1,2-Dichloropropane
U
0.306
1.00
1 11/08/201814:08
WG1193520
1,1-Dichloropropene
U
0.352
1.00
1 11/08/201814:08
WG1193520
1,3-Dichloropropane
U
0.366
1.00
1 11/08/201814:08
WG1193520
2,2-Dichloropropane
U
0.321
1.00
1 11/08/201814:08
WG1193520
Di -isopropyl ether
U
0.320
1.00
1 11/08/201814:08
WG1193520
Ethylbenzene
U
0.384
1.00
1 11/08/201814:08
WG1193520
Hexachloro-1,3-butadiene
U
0.256
1.00
1 11/08/201814:08
WG1193520
Isopropylbenzene
U
0.326
1.00
1 11/08/201814:08
WG1193520
p-Isopropyltoluene
U
0.350
1.00
1 11/08/201814:08
WG1193520
2-Butanone (MEK)
U
3.93
10.0
1 11/08/201814:08
WG1193520
Methylene Chloride
U
1.00
5.00
1 11/08/201814:08
WG1193520
4-Methyl-2-pentanone (MIBK)
U
2.14
10.0
1 11/08/201814:08
WG1193520
Methyl tert-butyl ether
U
0.367
1.00
1 11/08/201814:08
WG1193520
Naphthalene
U
1.00
5.00
1 11/08/201814:08
WG1193520
n-Propylbenzene
U
0.349
1.00
1 11/08/201814:08
WG1193520
Styrene
U
0.307
1.00
1 11/08/201814:08
WG1193520
1,1,1,2-Tetrachloroethane
U
0.385
1.00
1 11/08/201814:08
WG1193520
1,1,2,2-Tetrachloroethane
U
0.130
1.00
1 11/08/201814:08
WG1193520
Tetrachloroethene
U
0.372
1.00
1 11/08/201814:08
WG1193520
Toluene
U
0.412
1.00
1 11/08/201814:08
WG1193520
1,2,3-Trichlorobenzene
U
0.230
1.00
1 11/08/201814:08
WG1193520
1,2,4-Trichlorobenzene
U
0.355
1.00
1 11/08/201814:08
WG1193520
1,1,1-Trichloroethane
U
0.319
1.00
1 11/08/201814:08
WG1193520
1,1,2-Trichloroethane
U
0.383
1.00
1 11/08/201814:08
WG1193520
Trichloroethene
U
0.398
1.00
1 11/08/201814:08
WG1193520
ACCOUNT:
PROJECT:
SDG:
DATE/TIME:
Excel Civil & Environmental
Associates
23056
L1041993
11/13/18 16:34
FP1
FTc
FSS
4
Cn
FC]
F q,
FAI
FSC
PAGE:
24 of 34

ONE LAB. NATIONWIDE.
TRIP BLANK SAMPLE RESULTS - 10
Collected date/time: 11/06/18 00:00 L1041993
Volatile Organic Compounds (GC/MS) by Method 620OB-1997
Analyte
Trichlorofluoromethane
1,2,3-Trichloropropane
1,2,4-Tri methyl ben zen e
1,3,5-Trim ethyl benzene
Vinyl chloride
o-Xylene
m&p-Xylenes
(S) Toluene-d8
(S) Dibromofluoromethane
(S) a, a, a-Trifluoroto/uene
(S) 4-Bromof/uorobenzene
Result
Qualifier MDL
RDL
Dilution Analysis
ug/I
ug/I
ug/I
date / time
U
1.20
5.00
1 11/08/201814:08
U
0.807
2.50
1 11/08/201814:08
U
0.373
1.00
1 11/08/201814:08
U
0.387
1.00
1 11/08/201814:08
U
0.259
1.00
1 11/08/201814:08
U
0.341
1.00
1 11/08/201814:08
U
0.719
2.00
1 11/08/201814:08
103
80.0-120
111081201814.08
88.7
75.0-120
111081201814.08
104
80.0-120
111081201814.08
95.3
77.0-126
111081201814.08
Batch
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
WG1193520
Fp
FTc
FS
Fn
Fc
F,
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 25 of 34

WG1193520 QUALITY CONTROL SUMMARY ONE LAB. NATIONWIDE.
Volatile Organic Compounds (GC/MS) by Method 620OB-1997 L1041993-01,02,03,04,05,06,07,08,09,10
Method Blank (MB)
(MB) R3358379-4 11/08/1813:29
MB Result
Analyte
ug/I
Acetone
U
Acrolein
U
Acrylonitrile
U
Benzene
U
Bromobenzene
U
Bromodichloromethane
U
Bromoform
U
Bromomethane
U
n-Butylbenzene
U
sec -Butyl benzene
U
tert-Butylbenzene
U
Carbon tetrachloride
U
Chlorobenzene
U
Chlorodibromomethane
U
Chloroethane
U
Chloroform
U
Chloromethane
U
2-Chlorotoluene
U
4-Chlorotoluene
U
1,2-Dibromo-3-Chloropropane
U
1,2-Dibromoethane
U
Dibromomethane
U
1,2-Dichlorobenzene
U
1,3-Dichlorobenzene
U
1,4-Dichlorobenzene
U
Dichlorodifluoromethane
U
1,1-Dichloroethane
U
1,2-Dichloroethane
U
1,1-Dichloroethene
U
cis-1,2-Dichloroethene
U
trans-1,2-Dichloroethene
U
1,2-Dichloropropane
U
1,1-Dichloropropene
U
1,3-Dichloropropane
U
2,2-Dichloropropane
U
Ethylbenzene
U
Di -isopropyl ether
U
Hexachloro-1,3-butadiene
U
Isopropylbenzene
U
p-Isopropyltoluene
U
MB Qualifier MB MDL
ug/I
MB RDL
ug/I
10.0
50.0
8.87
50.0
1.87
10.0
0.331
1.00
0.352
1.00
0.380
1.00
0.469
1.00
0.866
5.00
0.361
1.00
0.365
1.00
0.399
1.00
0.379
1.00
0.348
1.00
0.327
1.00
0.453
5.00
0.324
5.00
0.276
2.50
0.375
1.00
0.351
1.00
1.33
5.00
0.381
1.00
0.346
1.00
0.349
1.00
0.220
1.00
0.274
1.00
0.551
5.00
0.259
1.00
0.361
1.00
0.398
1.00
0.260
1.00
0.396
1.00
0.306
1.00
0.352
1.00
0.366
1.00
0.321
1.00
0.384
1.00
0.320
1.00
0.256
1.00
0.326
1.00
0.350
1.00
FP1
FTC
FSS
[Cn]
FSr
�GI
FAI
FSC
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 26 of 34

WG1193520 QUALITY CONTROL SUMMARY
Volatile Organic Compounds (GC/MS) by Method 620OB-1997 L1041993-01,02,03,04,05,06,07,08,09,10
Method Blank (MB)
(MB) R3358379-4 11/08/1813:29
MB Result
MB Qualifier MB MDL
MB RDL
Analyte
ug/I
ug/I
ug/I
2-Butanone (MEK)
U
3.93
10.0
Methylene Chloride
U
1.00
5.00
4-Methyl-2-pentanone (MIBK)
U
2.14
10.0
Methyl tert-butyl ether
U
0.367
1.00
Naphthalene
U
1.00
5.00
n-Propylbenzene
U
0.349
1.00
Toluene
U
0.412
1.00
Styrene
U
0.307
1.00
1,1,1,2-Tetrachloroethane
U
0.385
1.00
1,1,2,2-Tetrachloroethane
U
0.130
1.00
Tetrachloroethene
U
0.372
1.00
1,2,3-Trichlorobenzene
0.707
J_ 0.230
1.00
1,2,4-Trichlorobenzene
U
0.355
1.00
1,1,1-Trichloroethane
U
0.319
1.00
1,1,2-Trichloroethane
U
0.383
1.00
Trichloroethene
U
0.398
1.00
Trichlorofluoromethane
U
1.20
5.00
1,2,3-Trichloropropane
U
0.807
2.50
1,2,4-Trimethylbenzene
U
0.373
1.00
1,3,5-Trimethyl benzene
U
0.387
1.00
Vinyl chloride
U
0.259
1.00
o-Xylene
U
0.341
1.00
m&p-Xylenes
U
0.719
2.00
(S) Toluene-d8
107
80.0-120
(S) Dibromofluoromethane
90.0
75.0-120
(S) a, a,o-Trifluoroto/uene
106
80.0-120
(S) 4-Bromof/uorobenzene
97.1
77.0-126
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3358379-1 11/08/1812:11 • (LCSD) R3358379-2 11/08/1812:30
Spike Amount
LCS Result
LCSD Result
Analyte
ug/I
ug/I
ug/I
Benzene
25.0
22.4
22.4
Acetone
125
136
126
Acrolein
125
200
192
Acrylonitrile
125
174
157
Bromobenzene
25.0
21.8
21.6
Bromodichloromethane
25.0
24.0
23.8
ACCOUNT:
Excel Civil & Environmental Associates
ONE LAB. NATIONWIDE.
LCS Rec.
LCSD Rec.
Rec. Limits
LCS Qualifier LCSD Qualifier RPD
RPD Limits
89.7
89.6
70.0-123
0.0426
20
109
101
19.0-160
7.17
27
160
153
10.0-160
4.11
26
139
126
55.0-149
10.1
20
87.1
86.6
73.0-121
0.673
20
96.0
95.1
75.0-120
0.963
20
PROJECT:
SDG:
DATE/TIME: PAGE:
23056
L1041993
11/13/18 16:34 27 of 34
FP1
FTc
FSS
[Cn]
FSr
�GI
FAI
FSC

WG1193520 QUALITY CONTROL SUMMARY
Volatile Organic Compounds (GC/MS) by Method 620OB-1997 L1041993-01,02,03,04,05,06,07,08,09,10
ONE LAB. NATIONWIDE.
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3358379-1 11/08/1812:11 • (LCSD) R3358379-2 11/08/1812:30
Spike Amount
LCS Result
LCSD Result
Analyte
ug/I
ug/I
ug/I
Bromoform
25.0
25.5
24.7
Bromomethane
25.0
17.4
16.8
n-Butylbenzene
25.0
23.9
23.7
sec -Butyl benzene
25.0
24.3
24.4
tert-Butylbenzene
25.0
24.0
23.7
Carbon tetrachloride
25.0
22.3
21.8
Chlorobenzene
25.0
25.7
25.8
Chlorodibromomethane
25.0
25.7
25.6
Chloroethane
25.0
25.1
24.8
Chloroform
25.0
21.2
20.9
Chloromethane
25.0
24.7
24.3
2-Chlorotoluene
25.0
24.5
24.0
4-Chlorotoluene
25.0
22.6
22.5
1,2-Dibromo-3-Chloropropane
25.0
25.5
26.4
1,2-Dibromoethane
25.0
25.7
26.0
Dibromomethane
25.0
24.2
23.9
1,2-Dichlorobenzene
25.0
23.6
23.9
Ethylbenzene
25.0
25.1
25.5
1,3-Dichlorobenzene
25.0
23.6
23.3
1,4-Dichlorobenzene
25.0
22.0
21.4
Dichlorodifluoromethane
25.0
18.7
18.4
1,1-Dichloroethane
25.0
25.1
24.9
1,2-Dichloroethane
25.0
23.6
23.5
1,1-Dichloroethene
25.0
22.9
22.6
cis-1,2-Dichloroethene
25.0
21.1
20.2
trans-1,2-Dichloroethene
25.0
20.8
21.1
1,2-Dichloropropane
25.0
29.1
28.3
1,1-Dichloropropene
25.0
23.7
23.8
1,3-Dichloropropane
25.0
26.1
26.7
2,2-Dichloropropane
25.0
22.0
21.7
Di -isopropyl ether
25.0
27.6
27.1
Hexachloro-1,3-butadiene
25.0
25.4
26.2
Toluene
25.0
24.8
24.8
Isopropylbenzene
25.0
24.9
24.8
p-Isopropyltoluene
25.0
24.1
24.0
2-Butanone (MEK)
125
153
146
Methylene Chloride
25.0
20.8
20.1
4-Methyl-2-pentanone (MIBK)
125
156
155
Methyl tert-butyl ether
25.0
22.3
22.2
Naphthalene
25.0
19.9
20.8
ACCOUNT:
Excel Civil & Environmental Associates
LCS Rec.
LCSD Rec.
Rec. Limits
LCS Qualifier LCSD Qualifier RPD
RPD Limits
102
98.9
68.0-132
3.18
20
69.6
67.1
10.0-160
3.59
25
95.4
95.0
73.0-125
0.487
20
97.3
97.6
75.0-125
0.384
20
96.1
94.8
76.0-124
1.38
20
89.1
87.1
68.0-126
2.26
20
103
103
80.0-121
0.236
20
103
102
77.0-125
0.457
20
101
99.2
47.0-150
1.33
20
84.8
83.7
73.0-120
1.22
20
98.7
97.2
41.0-142
1.52
20
98.2
96.0
76.0-123
2.25
20
90.4
90.0
75.0-122
0.496
20
102
106
58.0-134
3.42
20
103
104
80.0-122
1.37
20
96.7
95.6
80.0-120
1.14
20
94.4
95.6
79.0-121
1.30
20
100
102
79.0-123
1.66
20
94.3
93.3
79.0-120
1.04
20
88.0
85.7
79.0-120
2.71
20
75.0
73.7
51.0-149
1.71
20
101
99.5
70.0-126
1.03
20
94.5
93.9
70.0-128
0.690
20
91.6
90.4
71.0-124
1.24
20
84.4
80.6
73.0-120
4.57
20
83.4
84.2
73.0-120
1.01
20
117
113
77.0-125
2.95
20
94.6
95.1
74.0-126
0.449
20
104
107
80.0-120
2.42
20
87.9
86.7
58.0-130
1.42
20
111
109
58.0-138
1.84
20
102
105
54.0-138
3.00
20
99.2
99.2
79.0-120
0.0593
20
99.4
99.3
76.0-127
0.136
20
96.4
96.0
76.0-125
0.467
20
122
117
44.0-160
4.48
20
83.2
80.5
67.0-120
3.27
20
125
124
68.0-142
1.10
20
89.2
88.8
68.0-125
0.408
20
79.4
83.2
54.0-135
4.72
20
PROJECT:
SDG:
DATE/TIME: PAGE:
23056
L1041993
11/13/18 16:34 28 of 34
FP1
FTC
FSS
[Cn]
FSr
�GI
FAI
FSC

WG1193520 QUALITY CONTROL SUMMARY
Volatile Organic Compounds (GC/MS) by Method 620OB-1997 L1041993-01,02,03,04,05,06,07,08,09,10
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
ONE LAB. NATIONWIDE.
(LCS) R3358379-1 11/08/1812:11 • (LCSD) R3358379-2 11/08/1812:30
Spike Amount
LCS Result
LCSD Result
LCS Rec.
LCSD Rec.
Rec. Limits
LCS Qualifier LCSD Qualifier RPD
RPD Limits
Analyte ug/I
ug/I
ug/I
%
%
%
%
%
n-Propylbenzene 25.0
23.4
23.2
93.5
93.0
77.0-124
0.510
20
Styrene 25.0
24.8
24.8
99.1
99.0
73.0-130
0.0772
20
1,1,1,2-Tetrachloroethane 25.0
25.5
25.9
102
104
75.0-125
1.82
20
1,1,2,2-Tetrachloroethane 25.0
23.2
22.8
92.9
91.2
65.0-130
1.93
20
Tetrachloroethene 25.0
26.5
27.0
106
108
72.0-132
1.93
20
1,2,3-Trichlorobenzene 25.0
22.3
24.1
89.1
96.6
50.0-138
8.05
20
1,2,4-Trichlorobenzene 25.0
23.1
23.6
92.4
94.5
57.0-137
2.21
20
1,1,1-Trichloroethane 25.0
22.3
22.9
89.3
91.6
73.0-124
2.49
20
1,1,2-Trichloroethane 25.0
23.9
24.9
95.7
99.4
80.0-120
3.82
20
Trichloroethene 25.0
25.7
25.2
103
101
78.0-124
1.91
20
Trichlorofluoromethane 25.0
23.0
22.4
92.1
89.7
59.0-147
2.67
20
1,2,3-Trichloropropane 25.0
25.3
24.6
101
98.4
73.0-130
2.87
20
1,2,4-Trimethylbenzene 25.0
23.9
23.4
95.6
93.7
76.0-121
2.04
20
1,3,5-Trimethyl benzene 25.0
23.7
23.7
94.9
94.8
76.0-122
0.0938
20
Vinyl chloride 25.0
24.8
25.1
99.3
100
67.0-131
1.00
20
o-Xylene 25.0
25.5
25.6
102
102
80.0-122
0.359
20
m&p-Xylenes 50.0
51.0
51.1
102
102
80.0-122
0.112
20
(S) Toluene-d8
103
106
80.0-120
(S) Dibromofluoromethane
90.6
90.4
75.0-120
(S) a, a, a-Trifluoroto/uene
106
103
80.0-120
(S) 4-Bromof/uorobenzene
96.3
96.6
77.0-126
ACCOUNT:
PROJECT:
SDG:
DATE/TIME: PAGE:
Excel Civil & Environmental Associates
23056
L1041993
11/13/18 16:34 29 of 34
FP1
FTC
FSS
[Cn]
FSr
�GI
FAI
FSC

WG1193906 QUALITY CONTROL SUMMARY
Volatile Organic Compounds (GC/MS) by Method 620OB-1997 1-1041993-06,07,08,09
Method Blank (MB)
(MB) R3358721-3 11/09/18 14:20
MB Result
Analyte
ug/I
Benzene
U
Ethylbenzene
U
Naphthalene
U
Toluene
U
1,2,4-Trimethylbenzene
U
1,3,5-Trimethyl benzene
U
o-Xylene
U
m&p-Xylenes
U
(S) Toluene-d8
102
(S) Dibromofluoromethane 103
(S) a, a, a-Trifluoroto/uene 103
(S) 4-Bromof/uorobenzene 103
MB Qualifier MB MDL MB RDL
ug/I ug/I
0.331
1.00
0.384
1.00
1.00
5.00
0.412
1.00
0.373
1.00
0.387
1.00
0.341
1.00
0.719
2.00
80.0-120
75.0-120
80.0-120
77.0-126
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3358721-1 11/09/1813:24 • (LCSD) R3358721-2 11/09/1813:43
Spike Amount
LCS Result
LCSD Result
LCS Rec.
LCSD Rec.
Rec. Limits
LCS Qualifier LCSD Qualifier RPD
RPD Limits
Analyte
ug/I
ug/I
ug/I
%
%
%
%
%
Benzene
25.0
22.2
21.9
88.8
87.6
70.0-123
1.45
20
Ethylbenzene
25.0
23.7
23.3
95.0
93.0
79.0-123
2.07
20
Toluene
25.0
21.3
21.3
85.2
85.0
79.0-120
0.197
20
Naphthalene
25.0
23.0
24.0
92.1
95.8
54.0-135
3.99
20
1,2,4-Trimethylbenzene
25.0
25.0
25.4
100
101
76.0-121
1.41
20
1,3,5-Trimethyl benzene
25.0
25.9
26.2
104
105
76.0-122
1.19
20
o-Xylene
25.0
24.1
23.9
96.5
95.5
80.0-122
1.08
20
m&p-Xylenes
50.0
46.6
46.2
93.3
92.4
80.0-122
1.00
20
(S) Toluene-d8
100
99.8
80.0-120
(S) Dibromofluoromethane
103
101
75.0-120
(S) a,a,a-Trifluoroto/uene
102
101
80.0-120
(S) 4-Bromofluorobenzene
106
107
77.0-126
ONE LAB. NATIONWIDE.
FP1
FTc
FSS
4
Cn
FSr
�GI
FAI
[Sc
ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34 30 of 34

GLOSSARY OF TERMS
ONE LAB. NATIONWIDE.
Guide to Reading and Understanding Your Laboratory Report
FP1
The information below is
designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Abbreviations and Definitions
FTC
MDL
Method Detection Limit.
RDL
Reported Detection Limit.
FSS
Rec.
Recovery.
RPD
Relative Percent Difference.
SDG
Sample Delivery Group.
[Cn]
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
(S)
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
FSr
U
Not detected at the Reporting Limit (or MDL where applicable).
Analyte
The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
Fc
reported.
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
Dilution
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
Limits
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
FAI
duplicated within these ranges.
This column provides a letter and/or number designation that corresponds to additional information concerning the result
Qualifier
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
FSC
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state "ND" (Not Detected) or "BDL"
Result
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
A brief discussion about the included sample results, including a discussion of any non -conformances to protocol
Case Narrative (Cn)
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
This section of the report includes the results of the laboratory quality control analyses required by procedure or
Summary (Qc)
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
This is the document created in the field when your samples were initially collected. This is used to verify the time and
Sample Chain of
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
Custody (Sc)
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
This section of your report will provide the results of all testing performed on your samples. These results are provided
Sample Results (Sr)
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)
This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier
Description
J
The identification of the analyte is acceptable; the reported value is an estimate.
ACCOUNT:
PROJECT: SDG: DATE/TIME: PAGE:
Excel Civil & Environmental Associates
23056 L1041993 11/13/18 16:34 31 of 34

ACCREDITATIONS & LOCATIONS ONE LAB. NATIONWIDE.
Pace National is the only environmental laboratory accredited/certified to support your work nationwide from one location. One phone call, one point of contact, one laboratory. No other lab is as
accessible or prepared to handle your needs throughout the country. Our capacity and capability from our single location laboratory is comparable to the collective totals of the network
laboratories in our industry. The most significant benefit to our one location design is the design of our laboratory campus. The model is conducive to accelerated productivity, decreasing FP1
turn -around time, and preventing cross contamination, thus protecting sample integrity. Our focus on premium quality and prompt service allows us to be YOUR LAB OF CHOICE.
Not all certifications held by the laboratory are applicable to the results reported in the attached report.
Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace National. Z
Tc
State Accreditations
f—�
Alabama
40660
Nebraska _
NE-OS-15-05
SS
Alaska
17-026
Nevada
TN-03-2002-34
Arizona
AZO612
New Hampshire
2975
Arkansas
88-0469
New Jersey_NELAP
TNO02
C n
California
2932
New Mexico
n/a
Colorado
TN00003
New York
11742
s
Connecticut
PH-0197
North Carolina
Env375
Sr
Florida
E87487
North Carolina'
DW21704
Georgia
NELAP
North Carolina'
41
Georgia'
923
North Dakota
R-140
RC
Idaho
TN00003
Ohio—VAP
CL0069
Illinois
200008
Oklahoma
9915
Indiana
C-TN-01
Oregon
TN200002
G
Iowa
364
Pennsylvania
68-02979
Kansas
E-10277
Rhode Island
LA000356
Kentucky76
90010
South Carolina
84004
Kentucky 2
16
South Dakota
n/a
Louisiana
A130792
Tennessee' 4
2006
Louisiana'
LA180010
Texas
T 104704245-17-14
[SC
Maine
TN0002
Texas'
LABO152
Maryland
324
Utah
Massachusetts
M-TNO03
Vermont
Michigan
9958
Virginia
Minnesota
047-999-395
Washington
Mississippi
TN00003
West Virginia
Missouri
340
Wisconsin
Montana
CERT0086
Wyoming
Third Party
Federal Accreditations
A21LA — ISO 17025
1461.01
AIHA-LAP,LLC EMLAP
A21LA — ISO 17025 5
1461.02
DOD
Canada
1461.01
USDA
EPA—Crypto
TN00003
' Drinking Water 'Underground
Storage Tanks 3 Aquatic Toxicity 4 Chemical/Microbiological 5 Mold
6 Wastewater n/a Accreditation not applicable
Our Locations
TN00003
VT2006
460132
C847
233
9980939910
A2LA
100789
1461.01
P330-15-00234
Pace National has sixty-four client support centers that provide sample pickup and/or the delivery of sampling supplies. If you would like assistance from one of our support offices, please contact
our main office. Pace National performs all testing at our central laboratory.
WA
MT NO
OR MN
T ID t SD WI NY
WY MI
NV
t NE IA OH PA
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vA
UT T
CA�� T
KS MO KY
W `� NM O� AR `7N Sclp
T MS AL GA
T TX * LA
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ACCOUNT: PROJECT: SDG: DATE/TIME:
Excel Civil & Environmental Associates 23056 L1041993 11/13/18 16:34
ME
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Corrditiam:

APPENDIX D - MANN-KENDALL ANALYSIS
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
Evaluation Date: 121-Nov-18
Job ID: 123056
Facility Name: SERVCO Concord
Constituent: I Benzene
Conducted By: Trent Stanforth
Concentration Units: mg/L
Sampling Point ID:
MW-8
MW-10&R
MW-1 MW-2
MW-5
MW-9
Sampling
Event
Sampling
r.
te
1111F_
BENZENE
• •
1
07/02/03
1.300
1.300
2
08/27/03
1.900
3
02/26/04
12.000
12.000
4
05/13/04
8.700
5
03/12/07
13.000
0.680000
0.390000
0.880000
0.032000
6
09/18/08
13.000
0.001000
0.230000
0.027000
7
11/03/09
0.240000
0.260000
0.440000
0.320000
8
1 05/27/10
0.170000
1 0.210000
0.320000
2.800000
9
11/04/10
4.1000
7.400
0.036000
0.005500
0.006200
0.250000
10
05/11/11
2.3000
5.400
0.039000
0.005000
0.008300
1.000000
11
10/11/11
2.1000
0.030
0.021000
0.003400
0.010000
2.000000
12
05/21/12
1.4000
0.016000
0.005000
0.008700
0.120000
13
12/03/12
0.001000
0.001000
0.034000
14
04/30/13
0.3200
1.900
0.001000
0.001000
0.003500
0.001000
15
10/09/13
3.600
0.001100
0.001000
0.002000
0.002300
16
05/14/14
0.1000
3.200
0.001000
0.001000
0.001000
0.001100
17
12/29/14
0.0160
1.800
0.000330
0.000330
0.000330
0.000900
18
05/07/15
0.0122
3.700
0.000589
0.000330
0.000330
19
11/03/15
0.0107
3.630
0.000330
0.000330
0.000330
0.011900
20
05/10/16
0.0331
0.781
0.000330
0.000330
0.000330
0.115000
21
11/03/16
0.0033
1.370
0.000442
0.000330
0.000330
0.004170
22
05/04/17
0.0033
3.510
0.000330
0.000330
0.000330
0.003220
23
11/09/17
0.0432
1.170
0.000330
0.000330
0.000330
0.010900
24
6/28/18
0.0033
1.470
0.000330
0.000330
0.000330
0.000607
25
11/6/18
0.0166
0.932
0.000330
0.000330
0.000330
0.00145
26
27
28
29
30
Coefficient of Variation:
Mann -Kendall Statistic (S):
Confidence Factor:
Concentration Trend: Decreasing
Decreasing Decreasing Decreasing Decreasing
Decreasing
100
BMW-8
10
BMW-10&R
J
�
BMW-1
=MW-2
E 1
=_
C
�MW-5
O 0.1
All, I AbtMW-9
Y
0.01
V
C 0.001
O
U
-
0.0001
04101
10/06 07/09 04112 12114
Sampling Date
Notes:
1. At least four independent sampling events per well
are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2. Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
>_ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S:50, and COV >_ 1 = No Trend; < 90% and COV < 1 = Stable.
3. Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J.
Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann -Kendall Toolkd is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
GSI Environmental Inc., www.gsi-net.com

MANN-KENDALL
for Constituent
TOOLKIT
Trend Analysis
Evaluation Date: 121-Nov-18
Job ID:
123056
Facility Name: SERVCO Concord
Constituent:
MTBE
Conducted By: Trent Stanforth
Concentration Units: mg/L
Sampling Point ID:
MW-12
MW-10&R
MW-1 MW-2
MW-5
MW-9
Sampling
Event
Sampling
�. te
IVITBE
• •
1
07/02/03
1.800
1.100
2
08/27/03
2.100
3
02/26/04
2.500
4.700
4
05/13/04
1.800
5
03/12/07
0.0140
1.060
1.300000
0.480000
0.710000
0.800000
6
09/18/08
0.4700
3.200
0.001000
0.660000
0.950000
0.430000
7
11/03/09
0.640000
0.740000
1.200000
3.700000
8
05/27/10
0.0300
0.450
0.650000
0.640000
0.810000
4.900000
9
11/04/10
0.1900
0.650
0.530000
0.500000
0.770000
3.100000
10
05/11/11
0.0350
0.820
0.500000
0.580000
0.850000
3.900000
11
10/11/11
0.2600
0.003
0.170000
0.340000
0.440000
9.600000
12
05/21/12
0.2100
0.230000
0.190000
0.580000
2.200000
13
12/03/12
0.7600
0.150000
0.280000
1.500000
14
04/30/13
0.0700
0.450
0.047000
0.076000
0.360000
0.037000
15
10/09/13
0.2900
0.630
0.042000
0.049000
0.220000
1 1.500000
16
05/14/14
0.0050
1.200
0.005000
0.010000
0.180000
0.500000
17
12/29/14
0.0420
0.250
0.000420
0.002100
0.039000
0.160000
18
05/07/15
0.1580
0.503
0.000449
0.001460
0.052100
19
11/03/15
0.3270
0.512
0.001130
0.000370
0.005710
0.437000
20
05/10/16
0.1030
0.057
0.000370
0.000370
0.004300
0.743000
21
11/03/16
0.0816
0.238
0.000370
0.000370
0.000370
0.375000
22
05/04/17
0.0125
0.257
0.000370
0.000370
0.000370
0.333000
23
11/09/17
0.0116
0.235
0.000370
0.000370
0.000370
0.186000
24
06/28/18
1 0.00132
0.118
0.000370
0.000370
0.000370
0.165000
25
11/6/18
0.014
0.0249
0.000370
0.000370
0.000370
0.132
26
27
28
29
30
Coefficient of Variation:
Mann -Kendall Statistic (S):
Confidence Factor: 98.0%
Concentration Trend: Decreasing
Decreasing
Decreasing Decreasing
Decreasing
Decreasing
10
BMW-12
BMW-10&R
J 1
�
BMW-1
�MW-2
0.1
C
I MW-5
0
tMW-9
Y
L 0.01
c
N
0.001
0
U -
0.0001
04/01
10/06
07109 04112 12/14
aw
Sampling Date
Notes:
1. At least four independent sampling events per well are required for calculating
the trend. Methodology is valid for 4 to 40 samples.
2. Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
>_ 90% = Probably Increasing or Probably Decreasing;
< 90% and S>0 = No Trend; < 90%, S:50, and COV >_
1 = No Trend; < 90% and COV < 1 = Stable.
3. Methodology based on "MAROS: A Decision Support
System for Optimizing
Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J.
Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann -Kendall Toolkd is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc.,
disclaims any responsibility or obligation to update the information contained herein.
GSI
Environmental Inc., www.gsi-net.com

MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
Evaluation Date: 18-Jul-18
Job IR 123056
Facility Name: SERVCO Concord
Constituent:IToluene
Conducted By: 11121/2018
Concentration Units: I mg/L
Sampling Point ID:
MW-8
MW-10&R
Sampling
Event
Sampling
Date
1111V
TOLUENE
CONCENTRATION
1
07/02/03
2
08/27/03
3
02/26/04
24.000
4
05/13/04
27.000
5
03/12/07
19.000
6
09/18/08
22.000
7
11/03/09
8
05/27/10
12.000
9
11/04/10
17.0000
8.000
10
05/11/11
10.0000
3.900
11
10/11/11
11.0000
0.027
12
05/21/12
5.8000
13
12/03/12
14
04/30/13
1.0000
0.600
15
10/09/13
1.700
16
05/14/14
0.5000
12.000
17
12/29/14
0.0390
6.900
18
05/07/15
0.0695
5.590
19
11/03/15
0.1180
4.750
20
05/10/16
0.3550
4.640
21
11/03/16
0.0088
1.570
22
05/04/17
0.0120
2.150
23
11/09/17
0.0567
1.530
24
06/28/18
1 0.0412
0.422
25
11/6/18
0.0431
2.98
26
27
28
29
30
Coefficient of Variation: 1.73
1.05
Mann -Kendall Statistic (S):
Confidence Factor:
Concentration Trend: Decreasing
Decreasing
100
J 10
BMW-8
E
or
1
C
tMW-10&R
O
Y
� 0.1
c
d
_
O
U
0.001
04101 01104
10106 07/09 04112 12114 09117 06120
Sampling Date
Notes:
1. At least four independent sampling events per well
are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2. Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
>_ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S:50, and COV >_ 1 = No Trend; < 90% and COV < 1 = Stable.
3. Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann -Kendall Toolkd is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
GSI Environmental Inc., www.gsi-net.com

MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
Evaluation Date: 121-Nov-18
Job ID: 123056
Facility Name: SERVCO Concord
Constituent: I Ethylbenzene
Conducted By: Trent Stanforth
Concentration Units: mg/L
Sampling Point ID:
MW-8
MW-10&R
Sampling
Event
Sampling
r. te
1111F_
ETHYLBENZENE
•
•
1
07/02/03
2
08/27/03
3
02/26/04
3.900
4
05/13/04
9.900
5
03/12/07
2.200
6
09/18/08
4.000
7
11/03/09
8
05/27/10
2.000
9
11/04/10
3.1000
1.400
10
05/11/11
1.9000
1.100
11
10/11/11
3.3000
0.006
12
05/21/12
3.1000
13
12/03/12
14
04/30/13
1.1000
0.580
15
10/09/13
1.300
16
05/14/14
0.6600
2.600
17
12/29/14
0.0910
2.700
18
05/07/15
0.1970
1.930
19
11/03/15
0.5970
1.950
20
05/10/16
0.8510
1.460
21
11/03/16
0.0343
0.853
22
05/04/17
0.0813
1.840
23
11/09/17
0.128
1.17
24
06/28/18
1 0.00593
1.31
25
11/6/18
0.118
1.8
26
27
28
29
30
Coefficient of Variation: 1.60
1 i
Mann -Kendall Statistic (S):
Confidence Factor:
Concentration Trend: Decreasing
Prob. Decreasing
10
BMW-8
J
1
E
C
tMW-10&R
O 0.1
M
L
N 0.01
U
C
O
U
0.001
04/01 01104
10106 07/09 04112 12114 09117 06120
Sampling Date
Notes:
1. At least four independent sampling events per well
are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2. Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
>_ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S:50, and COV >_ 1 = No Trend; < 90% and COV < 1 = Stable.
3. Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann -Kendall Toolkd is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
GSI Environmental Inc., www.gsi-net.com

MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
Evaluation Date: 121-Nov-18
Job ID: 123056
Facility Name: SERVCO Concord
Constituent: 1Xylenes
Conducted By: Trent Stanforth
Concentration Units: mg/L
Sampling Point ID:
1 MW-8
MW-10&R
Sampling
Event
Sampling
r. te
XYLENES
• •
1
07/02/03
2
08/27/03
3
02/26/04
21.600
4
05/13/04
47.000
5
03/12/07
13.000
6
09/18/08
23.200
7
11/03/09
8
05/27/10
1
17.500
9
11/04/10
17.9000
11.000
10
05/11/11
15.2000
7.400
11
10/11/11
23.8000
0.048
12
05/21/12
25.5000
13
12/03/12
14
04/30/13
7.8000
1.870
15
10/09/13
4.900
16
05/14/14
1 6.6000
15.800
17
12/29/14
1.0000
13.800
18
05/07/15
1.4520
8.290
19
11/03/15
3.6900
8.430
20
05/10/16
4.5200
11.120
21
11/03/16
0.7060
3.890
22
05/04/17
0.8230
6.730
23
11/09/17
0.3800
3.820
24
06/28/18
1 0.078
3.036
25
11/6/18
0.43
10.78
26
27
28
29
30
Coefficient of Variation: 1.34
1 0.66
Mann -Kendall Statistic (S):
Confidence Factor:
Concentration Trend: Decreasing
Decreasing
100
J
BMW-8
10
tMW-10&R
O 1
M
v 0.1
C
O
U
0.01
04101 01104
10106 07/09 04112 12114 09117 06120
G&MSampling
Date
Notes:
1. At least four independent sampling events per well
are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2. Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
>_ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S:50, and COV >_ 1 = No Trend; < 90% and COV < 1 = Stable.
3. Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann -Kendall Toolkd is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
GSI Environmental Inc., www.gsi-net.com

MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
Evaluation Date: 121-Nov-18 Job ID: 123056
Facility Name: SERVCO Concord Constituent: Naphthalene
Conducted By: Trent Stanforth Concentration Units: mg/L
Sampling Point ID:
MW-8
1 MW-10&R
MW-9
Sampling
Event
Sampling
r.
te
1111F_
NAPHTHALENE
•
•
1
07/02/03
2
08/27/03
3
02/26/04
2.500
2.500
4
05/13/04
4.100
5
03/12/07
6
09/18/08
7
11/03/09
8
05/27/10
9
11/04/10
10
05/11/11
11
10/11/11
2.1000
0.001
0.005000
12
05/21/12
2.6000
0.018000
13
12/03/12
0.100000
14
04/30/13
1.6000
0.170
0.005000
15
10/09/13
0.360
0.005000
16
05/14/14
0.9400
1.200
0.005000
17
12/29/14
0.4400
0.690
0.004700
18
05/07/15
0.5740
0.502
19
11/03/15
0.6890
0.488
0.022500
20
05/10/16
0.7990
0.673
0.075300
21
11/03/16
0.3320
0.396
0.001000
22
05/04/17
0.5510
0.531
0.007360
23
11/09/17
0.2390
0.289
0.001070
24
06/28/18
1 0.0927
0.262
0.00100
25
11/6/18
0.184
0.591
0.00117
26
27
28
29
30
Coefficient of Variation:
• i
Mann -Kendall Statistic (S):
Confidence Factor:
Concentration Trend:
Decreasing Stable Decreasing
10
BMW-8
EL -MW-10&R
J 4
� 1 �MW-9
E
O 0.1
M
N, A/ A I
a) 0.01
C
O
U
0.001
JL04101 01104 10106 07/09 04/12 12114
Sampling Date
Notes:
1. At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2. Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
>_ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S:50, and COV >_ 1 = No Trend; < 90% and COV < 1 = Stable.
3. Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann -Kendall Toolkd is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
GSI Environmental Inc., www.gsi-net.com