1102_Buncombe_BASFEnka_Indus_Brownfields_MonitoringRequest_FID1469227_20201020

ELM Site Solutions, Inc.
P. O. Box 97607
Raleigh, North Carolina 27624
[phone]
October 20, 2020
submitted via Electronic Mail
Ms. Jaclynne Drummond
Compliance Hydrogeologist
North Carolina Department of Environmental Quality
Division of Waste Management - Solid Waste Section
2090 US Highway 70
Swannanoa, North Carolina 28778
Subject: Enka Landfill Compliance Monitoring
BASF Former Industrial Landfill Facility
Permit # 11-02
Enka, Buncombe County, North Carolina
Dear Ms. Drummond:
On behalf of BASF Corporation, ELM Site Solutions (ELMSS) herein requests a modification to the
Enka Landfill Compliance Monitoring Program required under the facility's post -closure permit.
This request is based on our previous discussions, a change in site conditions due to re-
development and data results collected previously from the site. The following sections provide
background information and justification details for the request.
Background Information
The current compliance monitoring program consists of quarterly landfill gas monitoring and semi-
annual groundwater and surface water monitoring, including sample collection from an on -site
seep. Landfill detection monitoring for groundwater and surface water includes analysis for
Appendix I VOCs, metals and the wet chemistry parameters of total dissolved solids and sulfates.
Semi-annual monitoring reports have been provided to the North Carolina Department of
Environmental Quality (NCDEQ) with the latest covering the April 2020 sampling event. A
brownfield permit was issued for the site resulting in the construction of three baseball/softball fields
1

Ms. Jaclynne Drummond
Monitoring Program Reduction Request
Former BASF Closed Industrial Landfill (11-02)
October 20, 2020
and supporting parking. To facilitate property development, a very significant amount of fill material
was imported to the site (source unknown) to establish grades required for the improvements. This
work was completed inside the facility's permitted waste boundary. During grading operations,
groundwater monitoring wells MW-3 and MW-6 (background well) were destroyed. Accordingly,
compliance monitoring reports beginning with the April 2017 sampling event have not included
these wells. In addition, landfill gas monitoring well LG-1 was destroyed at an unknown time by
road construction activities performed between March 2019 and June 2019 and based on a recent
report provided to BASF (Work Plan for Limited Soil Assessment (Rev1), S&ME, August 20, 2020),
it appears LG-7 and LG-8 may be impacted during pipeline installation.
Monitoring Program Reduction Request
The post -closure permit requires semi-annual groundwater monitoring from the site network
consisting of MW-3, MW-4R, MW-5 and background well MW-6 and surface water sample locations
(SW-1 and DW-2) in Hominy Creek. In a letter dated November 4, 2010, the NCDEQ Solid Waste
Section requested the collection of an additional surface water sample from a seep area at the site
in conjunction with the semi-annual groundwater sampling events for a minimum of 5 years. Landfill
gas monitoring wells were installed in 2010 with initial sampling beginning in December 2010.
BASF herein requests the following:
• quarterly landfill gas monitoring be modified to semi-annual monitoring;
• elimination of the seep sampling requirement;
• semi-annual groundwater and surface water monitoring be modified to annual monitoring
and VOC monitoring requirements be removed.
Details for these requests are provided below.
Landfill Gas Monitoring
As noted above, landfill gas concentrations are currently monitored quarterly with well LG-1 being
destroyed in 2019 from construction related activities and therefore, no longer monitored. Figure
A depicts landfill gas monitoring well locations. Table A contains historical (2010 — 2020)
monitoring data for the landfill gas wells. No landfill gas monitoring wells have exhibited a
concentration greater than 0.02% LEL at the site since 2010. Given these very low-level historical
detections and no future detections are planned, the concentrations are stable and do not pose a
risk to the public or the environment. Based on this information, BASF requests that the monitoring
frequency for landfill gases be reduced to semi-annually.
Seep Monitoring
As noted above, the NCDEQ Solid Waste Section requested the collection of an additional surface
water sample from a seep area at the site for a minimum of 5 years in a letter dated November 4,
VA

Ms. Jaclynne Drummond
Monitoring Program Reduction Request
Former BASF Closed Industrial Landfill (11-02)
October 20, 2020
2010. Since that time (i.e., over the past 10 years), only acetone and benzene have been observed
above laboratory detection limits. Table B includes seep sampling data since April 2011. Acetone,
which is not a site constituent of concern, was only detected in the April 2019 and October 2019
sampling events at estimated concentrations (1.2J ug/L and 2.6J ug/l, respectively). Concentrations
of acetone within 10% of the detection limit or instrument blank are considered laboratory
contaminants. Remaining results for acetone were below the laboratory detection limits that range
from 0.7 ug/L to 10 ug/L. Benzene was initially detected at an estimated concentration (0.9J in
2011) and the only subsequent detections were in April 2013, May 2014 and April 2019 at
concentrations of 1.2 ug/L, 0.81 J ug/L and 0.05J ug/L, respectively. All remaining results were
below the laboratory detection limit. It should also be noted that detected and estimated results for
benzene are within 10% of the detection limit. Based on this information, the concentrations are
stable and do not pose a risk to the public or the environment. BASF requests that seep sampling
be removed from the compliance monitoring program.
Surface Water Monitoring
The location of the BASF Enka Landfill monitoring wells and surface water/seep sample points are
provided on Figure B. As stated previously, the compliance monitoring program includes surface
water sample locations SW-1 (upstream) and DW-2 (downstream) in Hominy Creek.
Table B contains VOC surface water sampling data for the previous seven years (i.e., since 2014).
For SW-1, two VOCs were detected at estimated concentrations. Acetone was observed at
estimated concentrations during the October 2017 (3.1 J ug/L), April 2019 (2.3J ug/L) and April
2020 (0.9J ug/L) events and 1,2 dichloroethane was observed at an estimated concentration during
the April 2019 (0.05J ug/L) event. For DW-2, acetone and 1,2 dichloroethane detections mimicked
those of the upgradient sample location with the exception of acetone detected at 1.3J ug/L during
the October 2018 sampling event. Cis-1,2-dichloroethane was detected in DW-2 during one event
(October 2019) at an estimated concentration (0.05J).
A review of inorganic and wet chemistry data (Table C) since October 2014 indicates the
concentrations are relatively stable with some outliers present that may be due to turbidity or site
construction activities.
Based on this data review, VOCs have not been detected above reporting limits and upgradient
sample results closely mimic downgradient results. In addition, the distribution of inorganic and
wet chemistry parameters remains relatively consistent. Based on this information, the
concentrations are stable and do not pose a risk to the public or the environment. BASF requests
that surface water sampling be modified to annual sampling and VOC monitoring be removed for
surface water.
3

Ms. Jaclynne Drummond
Monitoring Program Reduction Request
Former BASF Closed Industrial Landfill (11-02)
October 20, 2020
Groundwater Monitoring
As noted above, the groundwater compliance monitoring program includes monitoring wells MW-
3, MW-4R, MW-5 and background well MW-6, with MW-3 and MW-6 (background well) destroyed
during site grading operations from brownfield development activities.
Historical VOC groundwater results from 2014 to present are provided in Table B. There were no
Appendix I detections above the 15A NCAC 2L (2L) standards in groundwater since 2014.
Samples collected from MW-4R and MW-5 continue to be analyzed for the inorganic and wet
chemistry constituents. Historical data from 2014 to present for inorganic constituents are
presented in Table C. Consistent unqualified detections of barium, cobalt, sulfate, and total
dissolved solids are observed in the data. Results for other constituents vary from non -detect,
estimated, and occasionally detected values above the reporting limit.
Appendix I VOCs have not been detected above 2L groundwater standards and the distribution of
inorganic and wet chemistry parameters remain relatively consistent. Based on this information,
the concentrations are stable and do not pose a risk to the public or the environment. BASF
requests that groundwater sampling be modified to annual sampling and VOC monitoring be
removed for groundwater.
Thank you for considering BASF's request. Implementation of the proposed sampling modifications
would result in the next groundwater and surface water event occurring in April 2021 and continuing
on an annual basis. We would also propose to conduct to conduct the next landfill gas monitoring
event in April 2021 with continuation on a semi-annual basis.
Please contact us if you have any questions or require any further information.
Sincerely,
ELM Site Solutions, Inc.
Rusty Norris, PE, PLS, RSM
Senior Engineer
attachments
c Vernon Burrows, BASF Corporation
4

TABLES

Table A
Landfill Gas Monitoring Results (2010 - 2020)
BASF Enka Landfill
Former BASF Manufacturing Facility
Enka, NC
LFG
WELL ID
SAMPLE
DATE
Sample
Time
Sample Tube
Purge
Time
Pumped
% CH4
By Volume
0 �0 LEL
0
/0 02
0
/o CO2
12/13/2010
1124
>60s
>60s
0
0
17.0
4.8
3/11/2011
1335
>60s
>60s
0
0
18.2
3.8
6/3/2011
1100
>60s
>60s
0
0
17.0
3.4
10/12/2011
1130
>60s
>60s
0
0
16.8
3.8
12/14/2011
1300
>60s
>60s
0
0
17.0
3.7
3/8/2012
1200
>60s
>60s
1 0
0
17.3
3.6
6/14/2012
1115
>60s
>60s
0
0
17.0
3.8
9/26/2012
1200
>60s
>60s
0
0
17.2
3.6
12/3/2012
1200
>60s
>60s
0
0
18.3
3.9
3/27/2013
1200
>60s
>60s
0
0
18.0
3.4
6/3/2013
1300
>60s
>60s
0
0
15.3
3.0
9/17/2013
1130
>60s
>60s
0
0
14.5
7.2
12/11/2013
1200
>60s
>60s
0
0
15.3
1 5.7
3/13/2014
1200
>60s
>60s
0
0
18.2
3.2
6/5/2014
1230
>60s
>60s
0
0
15.6
4.2
9/30/2014
1130
>60s
>60s
0
0
14.4
5.5
12/19/2014
1100
>60s
>60s
0
0
14.8
5.1
LG-1
3/17/2015
1130
>60s
>60s
0
0
16.8
4.3
6/19/2015
1215
>60s
>60s
0
0
17.1
3.9
9/14/2015
1400
>60s
>60s
0
0
18.2
3.1
12/1/2015
1130
>60s
>60s
1 0
0
1 15.5
5.5
3/15/2016
1200
>60s
>60s
0
0
15.7
2.6
6/29/2016
1200
>60s
>60s
0
0
16.9
4.2
9/16/2016
1200
>60s
>60s
0
0
16.0
4.8
12/30/2016
1100
>60s
>60s
0
0
20.5
3.1
3/24/2017
1030
>60s
>60s
0
0
15.5
2.7
6/9/2017
1130
>60s
>60s
0
0
15.2
4.5
9/1/2017
1130
>60s
>60s
0
0
18.0
4.1
12/22/2017
1130
>60s
>60s
1 0
0
1 17.0
4.4
3/30/2018
1100
>60s
>60s
0
0
16.6
4.5
6/15/2018
1030
>60s
>60s
0
0
17.2
4.7
9/22/2018
1140
>60s
>60s
0
0
17.1
4.4
12/26/2018
1300
>60s
>60s
0
0
15.2
6.5
3/9/2019
1515
>60s
>60s
0.4
0.02
1 15.8
3.8
6/29/2019
Well
Demolished since Last Sampling Event at an Unknown Time
12/13/2010
1131
>60s
>60s
0
0
18.9
2.2
3/11/2011
1345
>60s
>60s
0
0
20.4
0.9
6/3/2011
1130
>60s
>60s
0
0
19.5
2.3
10/12/2011
1145
>60s
>60s
0
0
18.1
2.4
12/14/2011
1330
>60s
>60s
0
0
18.6
2.2
3/8/2012
1145
>60s
>60s
0
0
19.3
1.8
6/14/2012
1130
>60s
>60s
0
0
18.5
2.4
9/26/2012
1215
>60s
>60s
0
0
1 18.8
2.2
12/3/2012
1230
>60s
>60s
0
0
19.2
2.0
3/27/2013
1230
>60s
>60s
0
0
19.6
2.5
6/3/2013
1315
>60s
>60s
0
0
16.8
3.3
9/17/2013
1140
>60s
>60s
0
0
17.5
3.7
12/11/2013
1215
>60s
>60s
0
0
17.3
3.2
3/13/2014
1230
>60s
>60s
0
0
19.3
2.7
6/5/2014
1245
>60s
>60s
0
1 0
17.0
3.0
9/30/2014
1145
>60s
>60s
0
0
1 16.7
3.9
12/19/2014
1115
>60s
>60s
0
0
16.9
3.5
3/17/2015
1140
>60s
>60s
0
0
17.1
2.9
6/19/2015
1230
>60s
>60s
0
0
18.1
2.8
LG-2
9/14/2015
1415
>60s
>60s
0
0
19.6
0.8
12/1/2015
1145
>60s
>60s
0
0
17.1
3.4
3/15/2016
1230
>60s
>60s
0
0
18.6
1.3
6/29/2016
1230
>60s
>60s
0
0
18.5
2.4
9/16/2016
1215
>60s
>60s
0
0
1 16.9
3.2
12/30/2016
1115
>60s
>60s
0
0
20.9
2.2
3/24/2017
1100
>60s
>60s
0
0
18.2
1.5
6/9/2017
1200
>60s
>60s
0
0
19.5
2.1
9/1/2017
1215
>60s
>60s
0
0
17.8
3.0
12/22/2017
1145
>60s
>60s
0
0
19.1
2.6
3/30/2018
1115
>60s
>60s
1 0
0
17.0
3.0
6/15/2018
1100
>60s
>60s
0
0
16.8
4.0
9/22/2018
1200
>60s
>60s
0
0
1 16.6
3.4
12/26/2018
1310
>60s
>60s
0
0
15.5
3.4
3/9/2019
1520
>60s
>60s
0.4
0.02
17.3
2.3
6/29/2019
940
>60s
>60s
0
0
16.9
2.4
9/25/2019
1200
>60s
>60s
0
0
17.5
3.1
12/21/2019
1350
>60s
>60s
0
0
15.9
2.2
1400
>60s
>60s
0.1
0.005
16.3
1 2.3
1 of 6

Table A
Landfill Gas Monitoring Results (2010 - 2020)
BASF Enka Landfill
Former BASF Manufacturing Facility
Enka, NC
LFG
WELL ID
SAMPLE
DATE
Sample
Time
Sample Tube
Purge
Time
Pumped
% CH4
By Volume
% LEL
% 02
% CO2
12/13/2010
1136
>60s
>60s
0
0
18.6
3.2
3/11/2011
1400
>60s
>60s
0
0
19.7
2.1
6/3/2011
1200
>60s
>60s
0
0
17.4
3.4
10/12/2011
1200
>60s
>60s
0
0
17.8
3.0
12/14/2011
1345
>60s
>60s
0
0
18.0
2.9
3/8/2012
1230
>60s
>60s
0
0
1 18.4
2.8
6/14/2012
1200
>60s
>60s
0
0
18.8
2.5
9/26/2012
1230
>60s
>60s
0
0
18.6
2.7
12/3/2012
1245
>60s
>60s
0
0
18.9
2.9
3/27/2013
1245
>60s
>60s
0
0
20.4
2.4
6/3/2013
1230
>60s
>60s
0
0
16.8
3.2
9/17/2013
1150
>60s
>60s
0
0
17.4
3.8
12/11/2013
1230
>60s
>60s
0
0
17.5
3.7
3/13/2014
1300
>60s
>60s
0
0
20.1
2.5
6/5/2014
1300
>60s
>60s
0
0
17.7
3.1
9/30/2014
1200
>60s
>60s
0
0
16.9
3.5
12/19/2014
1145
>60s
>60s
0
0
16.5
4.0
3/17/2015
1150
>60s
>60s
0
0
18.5
2.6
6/19/2015
1245
>60s
>60s
0
0
17.5
3.3
LG-3
9/14/2015
1430
>60s
>60s
0
0
18.2
2.5
12/1/2015
1200
>60s
>60s
0
0
17.5
3.6
3/15/2016
1245
>60s
>60s
0
0
16.7
2.9
6/29/2016
1245
>60s
>60s
0
0
17.9
3.1
9/16/2016
1230
>60s
>60s
0
0
17.1
3.8
12/30/2016
1145
>60s
>60s
0
0
20.5
2.6
3/24/2017
1115
>60s
>60s
0
0
17.5
2.2
6/9/2017
1230
>60s
>60s
0
0
18.9
2.4
9/1/2017
1230
>60s
>60s
0
0
19.0
2.3
12/22/2017
1200
>60s
>60s
0
0
19.4
2.5
3/30/2018
1145
>60s
>60s
0
0
18.6
2.5
6/15/2018
1115
>60s
>60s
0
0
18.9
2.2
9/22/2018
1215
>60s
>60s
0
0
18.6
1.7
12/26/2018
1320
>60s
>60s
0
0
18.4
3.1
3/9/2019
1530
>60s
>60s
0.3
0.015
19.2
1.5
6/29/2019
950
>60s
>60s
0
0
17.9
2.2
9/25/2019
1210
>60s
>60s
0
0
18.3
2.0
12/21/2019
1400
>60s
>60s
0
0
19.6
2.2
3 8 2020
1410
>60s
>60s
0.1
0.005
1 18.6
2.1
12/13/2010
1143
>60s
>60s
0
0
16.6
5.5
3/11/2011
1415
>60s
>60s
0
0
18.8
2.8
6/3/2011
1230
>60s
>60s
0
0
17.8
3.2
10/12/2011
1230
>60s
>60s
0
0
14.1
5.4
12/14/2011
1400
>60s
>60s
0
0
13.9
5.3
3/8/2012
1245
>60s
>60s
0
0
16.8
4.2
6/14/2012
1215
>60s
>60s
0
0
16.4
4.4
9/26/2012
1245
>60s
>60s
0
0
16.5
4.6
12/3/2012
1300
>60s
>60s
0
0
15.5
5.9
3/27/2013
1300
>60s
>60s
0
0
19.9
3.2
6/3/2013
1430
>60s
>60s
0
0
16.0
4.2
9/17/2013
1200
>60s
>60s
0
0
12.9
6.4
12/11/2013
1245
>60s
>60s
0
0
15.4
5.7
3/13/2014
1330
>60s
>60s
0
0
19.7
3.3
6/5/2014
1330
>60s
>60s
0
0
14.7
4.2
9/30/2014
1230
>60s
>60s
0
0
1 13.9
5.4
12/19/2014
1230
>60s
>60s
0
0
14.1
5.2
3/17/2015
1200
>60s
>60s
0
0
18.4
3.3
6/19/2015
1300
>60s
>60s
0
0
17.8
3.2
LG-4
9/14/2015
1445
>60s
>60s
0
0
16.2
4.6
12/1/2015
1230
>60s
>60s
0
0
15.5
5.6
3/15/2016
1300
>60s
>60s
0
0
17.1
3.0
6/29/2016
1300
>60s
>60s
1 0
0
17.7
3.4
9/16/2016
1300
>60s
>60s
0
0
15.8
4.9
12/30/2016
1200
>60s
>60s
0
0
17.0
3.4
3/24/2017
1130
>60s
>60s
0
0
16.1
4.0
6/9/2017
1300
>60s
>60s
0
0
13.4
5.4
9/1/2017
1300
>60s
>60s
0
0
16.7
4.5
12/22/2017
1215
>60s
>60s
0
0
15.5
5.2
3/30/2018
1230
>60s
>60s
0
0
18.5
1 2.5
6/15/2018
1130
>60s
>60s
1 0
0
15.8
4.8
9/22/2018
1230
>60s
>60s
0
0
15.3
4.8
12/26/2018
1330
>60s
>60s
0
0
16.5
5.3
3/9/2019
1540
>60s
>60s
0.3
0.015
18.7
2.3
6/29/2019
1000
>60s
>60s
0
0
17.2
2.4
9/25/2019
1215
>60s
>60s
0
0
15.7
4.9
12/21/2019
1410
>60s
>60s
0
0
16.9
4.1
3 8 2020
1420
>60s
>60s
0.1
0.005
17.3
1 3.4
2 of 6

Table A
Landfill Gas Monitoring Results (2010 - 2020)
BASF Enka Landfill
Former BASF Manufacturing Facility
Enka, NC
LFG
WELL ID
SAMPLE
DATE
Sample
Time
Sample Tube
Purge
Time
Pumped
% CH4
By Volume
% LEL
% 02
% CO2
12/13/2010
1159
>60s
>60s
0
0
14.2
6.7
3/11/2011
1430
>60s
>60s
0
0
15.6
5.7
6/3/2011
1300
>60s
>60s
0
0
16.1
5.5
10/12/2011
1300
>60s
>60s
0
0
15.6
5.2
12/14/2011
1430
>60s
>60s
0
0
15.9
5.4
3/8/2012
1330
>60s
>60s
0
0
1 14.6
6.1
6/14/2012
1245
>60s
>60s
0
0
14.8
5.9
9/26/2012
1300
>60s
>60s
0
0
14.2
6.0
12/3/2012
1330
>60s
>60s
0
0
15.1
7.0
3/27/2013
1330
>60s
>60s
0
0
14.7
6.0
6/3/2013
1500
>60s
>60s
0
0
15.1
5.7
9/17/2013
1230
>60s
>60s
0
0
15.5
4.9
12/11/2013
1330
>60s
>60s
1 0
0
17.0
5.5
3/13/2014
1400
>60s
>60s
0
0
15.2
5.6
6/5/2014
1400
>60s
>60s
0
0
17.6
4.8
9/30/2014
1300
>60s
>60s
0
0
17.4
5.0
12/19/2014
1300
>60s
>60s
0
0
17.1
5.1
3/17/2015
1230
>60s
>60s
0
0
15.1
5.4
6/19/2015
1330
>60s
>60s
0
0
14.6
5.8
LG-5
9/14/2015
1500
>60s
>60s
0
0
18.8
1.9
12/1/2015
1300
>60s
>60s
1 0
0
17.1
5.3
3/15/2016
1330
>60s
>60s
0
0
15.5
4.3
6/29/2016
1330
>60s
>60s
0
0
14.9
5.2
9/16/2016
1330
>60s
>60s
0
0
16.9
5.5
12/30/2016
1230
>60s
>60s
0
0
19.7
2.7
3/24/2017
1200
>60s
>60s
0
0
15.5
4.3
6/9/2017
1400
>60s
>60s
0
0
15.2
4.5
9/1/2017
1330
>60s
>60s
0
0
17.2
5.2
12/22/2017
1245
>60s
>60s
0
0
15.9
5.1
3/30/2018
1300
>60s
>60s
0
0
14.9
5.5
6/15/2018
1200
>60s
>60s
0
0
15.3
5.1
9/22/2018
1245
>60s
>60s
0
0
18.8
2.5
12/26/2018
1340
>60s
>60s
0
0
13.4
6.3
3/9/2019
1550
>60s
>60s
0.3
0.015
17.6
2.7
6/29/2019
1010
>60s
>60s
0
0
18.6
2.6
9/25/2019
1220
>60s
>60s
0
0
18.2
3.1
12/21/2019
1420
>60s
>60s
0
0
16.3
4.3
3 8 2020
1430
>60s
>60s
0.1
0.005
1 15.4
3.9
12/13/2010
1207
>60s
>60s
0
0
18.9
2.1
3/11/2011
1500
>60s
>60s
0
0
19.8
1.8
6/3/2011
1320
>60s
>60s
0
0
19.4
1.6
10/12/2011
1000
>60s
>60s
0
0
16.3
4.4
12/14/2011
1115
>60s
>60s
0
0
16.7
4.9
3/8/2012
1400
>60s
>60s
0
0
18.1
3.2
6/14/2012
1330
>60s
>60s
0
0
17.6
3.4
9/26/2012
1330
>60s
>60s
0
0
17.5
3.5
12/3/2012
1400
>60s
>60s
0
0
20.2
1.5
3/27/2013
1400
>60s
>60s
0
0
17.9
3.5
6/3/2013
1530
>60s
>60s
0
0
17.4
3.6
9/17/2013
1300
>60s
>60s
0
0
20.5
0.9
12/11/2013
1400
>60s
>60s
0
0
19.6
1.2
3/13/2014
1430
>60s
>60s
0
0
18.0
3.2
6/5/2014
1430
>60s
>60s
0
0
18.1
3.0
9/30/2014
1330
>60s
>60s
0
0
1 19.0
1.5
12/19/2014
1330
>60s
>60s
0
0
18.9
1.7
3/17/2015
1300
>60s
>60s
0
0
17.8
3.3
6/19/2015
1400
>60s
>60s
0
0
17.6
3.4
LG-6
9/14/2015
1530
>60s
>60s
0
0
17.4
3.4
12/1/2015
1330
>60s
>60s
0
0
19.5
1.3
3/15/2016
1400
>60s
>60s
0
0
17.9
2.1
6/29/2016
1400
>60s
>60s
1 0
0
17.5
3.1
9/16/2016
1400
>60s
>60s
0
0
18.9
2.2
12/30/2016
1300
>60s
>60s
0
0
19.8
2.7
3/24/2017
1230
>60s
>60s
0
0
17.6
2.3
6/9/2017
1430
>60s
>60s
0
0
17.4
2.5
9/1/2017
1400
>60s
>60s
0
0
19.7
2.3
12/22/2017
1330
>60s
>60s
0
0
20.1
1.7
3/30/2018
1330
>60s
>60s
0
0
18.0
2.9
6/15/2018
1230
>60s
>60s
0
0
20.8
0.7
9/22/2018
1300
>60s
>60s
0
0
1 20.0
0.6
12/26/2018
1350
>60s
>60s
0
0
20.5
0.5
3/9/2019
1600
>60s
>60s
0.4
0.02
20.4
0.3
6/29/2019
1020
>60s
>60s
0
0
19.8
0.5
9/25/2019
1230
>60s
>60s
0
0
19.5
0.8
1430
>60s
>60s
0
0
20.9
0.5
H12/21/2019
3 8 2020
1440
>60s
>60s
0.1
0.005
20.4
0.4
3 of 6

Table A
Landfill Gas Monitoring Results (2010 - 2020)
BASF Enka Landfill
Former BASF Manufacturing Facility
Enka, NC
LFG
WELL ID
SAMPLE
DATE
Sample
Time
Sample Tube
Purge
Time
Pumped
% CH4
By Volume
% LEL
% 02
% CO2
12/13/2010
1215
>60s
>60s
0
0
19.4
1.1
3/11/2011
1515
>60s
>60s
0
0
17.9
1.1
6/3/2011
1345
>60s
>60s
0
0
17.8
1.3
10/12/2011
1015
>60s
>60s
0
0
17.9
2.2
12/14/2011
1100
>60s
>60s
0
0
18.3
1.5
3/8/2012
1000
>60s
>60s
0
0
18.7
2.2
6/14/2012
1030
>60s
>60s
0
0
18.1
3.0
9/26/2012
1030
>60s
>60s
0
0
18.0
2.9
12/3/2012
1030
>60s
>60s
0
0
19.9
1.3
3/27/2013
1030
>60s
>60s
0
0
21.9
0.3
6/3/2013
1115
>60s
>60s
0
0
19.0
0.4
9/17/2013
1000
>60s
>60s
0
0
18.9
2.3
12/11/2013
1100
>60s
>60s
0
0
20.2
0.2
3/13/2014
1000
>60s
>60s
0
0
19.1
2.4
6/5/2014
1100
>60s
>60s
0
0
18.9
1.9
9/30/2014
1000
>60s
>60s
0
0
18.1
1.9
12/19/2014
1000
>60s
>60s
0
0
18.4
1.6
3/17/2015
1030
>60s
>60s
0
0
19.9
1.0
6/19/2015
1100
>60s
>60s
0
0
18.8
1.8
LG-7
9/14/2015
1300
>60s
>60s
0
0
1 19.0
2.2
12/1/2015
1000
>60s
>60s
0
0
19.2
1.5
3/15/2016
1430
>60s
>60s
0
0
19.0
1.2
6/29/2016
1415
>60s
>60s
0
0
18.6
2.0
9/16/2016
1030
>60s
>60s
0
0
18.4
5.3
12/30/2016
1330
>60s
>60s
0
0
20.7
1.0
3/24/2017
1300
>60s
>60s
0
0
17.4
2.6
6/9/2017
1330
>60s
>60s
0
0
17.1
2.9
9/1/2017
1430
>60s
>60s
0
0
18.6
2.7
12/22/2017
1400
>60s
>60s
0
0
19.7
0.7
3/30/2018
1000
>60s
>60s
0
0
19.5
1.1
6/15/2018
1300
>60s
>60s
0
0
16.5
3.5
9/22/2018
1330
>60s
>60s
0
0
15.5
3.7
12/26/2018
1400
>60s
>60s
0
0
26.0
0.9
3/9/2019
1610
>60s
>60s
0.4
0.02
20.1
0.2
6/29/2019
1030
>60s
>60s
1 0
0
1 19.4
1.1
9/25/2019
1240
>60s
>60s
0
0
17.1
3.4
12/21/2019
1440
>60s
>60s
0
0
21.2
0.6
3 8 2020
1450
>60s
>60s
0.1
0.005
20.2
0.6
12/13/2010
1222
>60s
>60s
0
0
18.0
2.9
3/11/2011
1530
>60s
>60s
0
0
13.9
3.6
6/3/2011
1430
>60s
>60s
0
0
16.2
3.5
10/12/2011
1030
>60s
>60s
0
0
16.2
3.1
12/14/2011
1145
>60s
>60s
1 0
0
1 15.9
3.0
3/8/2012
1030
>60s
>60s
0
0
19.1
1.9
6/14/2012
1040
>60s
>60s
0
0
18.3
2.6
9/26/2012
1100
>60s
>60s
0
0
18.2
2.4
12/3/2012
1050
>60s
>60s
0
0
19.2
2.4
3/27/2013
1045
>60s
>60s
0
0
18.7
2.4
6/3/2013
1145
>60s
>60s
0
0
16.4
4.2
9/17/2013
1015
>60s
>60s
0
0
18.3
4.1
12/11/2013
1115
>60s
>60s
0
0
17.7
3.2
3/13/2014
1030
>60s
>60s
0
0
19.1
2.3
6/5/2014
1115
>60s
>60s
0
0
18.5
2.9
9/30/2014
1015
>60s
>60s
0
0
16.2
4.4
12/19/2014
1010
>60s
>60s
0
0
16.5
4.1
3/17/2015
1045
>60s
>60s
0
0
17.4
1 2.7
6/19/2015
1115
>60s
>60s
0
0
18.3
2.5
LG-8
9/14/2015
1310
>60s
>60s
0
0
18.4
2.3
12/1/2015
1015
>60s
>60s
0
0
17.6
3.3
3/15/2016
1000
>60s
>60s
0
0
17.2
1.9
6/29/2016
1000
>60s
>60s
0
0
18.2
2.1
9/16/2016
1100
>60s
>60s
0
0
18.4
4.6
12/30/2016
1000
>60s
>60s
0
0
19.6
2.2
3/24/2017
930
>60s
>60s
0
0
17.3
1.9
6/9/2017
1045
>60s
>60s
0
0
14.2
8.0
9/1/2017
1030
>60s
>60s
0
0
13.1
5.2
12/22/2017
1030
>60s
>60s
0
0
13.0
5.0
3/30/2018
1010
>60s
>60s
0
0
17.5
2.6
6/15/2018
945
>60s
>60s
0
0
14.9
5.8
9/22/2018
1100
>60s
>60s
0
0
7.9
9.1
12/26/2018
1230
>60s
>60s
0
0
1 12.0
7.3
3/9/2019
1445
>60s
>60s
0.3
0.015
17.6
6.1
6/29/2019
900
>60s
>60s
0
0
13.6
5.3
9/25/2019
1130
>60s
>60s
0
0
14.3
6.8
12/21/2019
1450
>60s
>60s
0
0
10.0
5.3
3 8 2020
1330
>60s
>60s
0
0
12.5
4.1
4 of 6

Table A
Landfill Gas Monitoring Results (2010 - 2020)
BASF Enka Landfill
Former BASF Manufacturing Facility
Enka, NC
LFG
WELL ID
SAMPLE
DATE
Sample
Time
Sample Tube
Purge
Time
Pumped
% CH4
By Volume
% LEL
% 02
% CO2
12/13/2010
1227
>60s
>60s
0
0
18.1
3.1
3/11/2011
1545
>60s
>60s
0
0
17.9
1.8
6/3/2011
1500
>60s
>60s
0
0
17.5
2.1
10/12/2011
1040
>60s
>60s
0
0
17.2
3.4
12/14/2011
1215
>60s
>60s
0
0
17.5
3.5
3/8/2012
1100
>60s
>60s
0
0
20.7
0.4
6/14/2012
1050
>60s
>60s
0
0
19.9
1.2
9/26/2012
1115
>60s
>60s
0
0
19.7
1.2
12/3/2012
1100
>60s
>60s
0
0
19.5
2.9
3/27/2013
1100
>60s
>60s
0
0
22.2
0.2
6/3/2013
1200
>60s
>60s
0
0
14.0
2.5
9/17/2013
1030
>60s
>60s
0
0
15.3
4.4
12/11/2013
1130
>60s
>60s
0
0
17.4
3.3
3/13/2014
1100
>60s
>60s
0
0
21.6
1.5
6/5/2014
1130
>60s
>60s
0
0
15.8
2.7
9/30/2014
1045
>60s
>60s
0
0
15.3
4.2
12/19/2014
1020
>60s
>60s
0
0
15.5
4.0
3/17/2015
1100
>60s
>60s
0
0
16.4
3.1
6/19/2015
1130
>60s
>60s
0
0
15.2
4.3
LG-9
9/14/2015
1320
>60s
>60s
0
0
1 18.0
3.7
12/1/2015
1035
>60s
>60s
0
0
17.2
3.1
3/15/2016
1030
>60s
>60s
0
0
19.1
0.8
6/29/2016
1025
>60s
>60s
0
0
15.3
4.2
9/16/2016
1115
>60s
>60s
0
0
17.6
4.9
12/30/2016
1015
>60s
>60s
0
0
20.9
2.3
3/24/2017
945
>60s
>60s
0
0
18.1
1.8
6/9/2017
1100
>60s
>60s
0
0
13.2
4.5
9/1/2017
1045
>60s
>60s
0
0
18.4
4.1
12/22/2017
1100
>60s
>60s
0
0
15.3
3.9
3/30/2018
1020
>60s
>60s
0
0
15.2
3.7
6/15/2018
950
>60s
>60s
0
0
15.6
5.2
9/22/2018
1115
>60s
>60s
0
0
16.0
5.0
12/26/2018
1240
>60s
>60s
0
0
19.5
1.7
3/9/2019
1455
>60s
>60s
0.3
0.015
20.3
0.3
6/29/2019
910
>60s
>60s
1 0
0
15.7
3.3
9/25/2019
1140
>60s
>60s
0
0
1 17.8
4.4
12/21/2019
1330
>60s
>60s
0
0
15.3
4.3
3 8 2020
1340
>60s
>60s
0.1
0.005
20.7
0.8
12/13/2010
1235
>60s
>60s
0
0
15.5
5.8
3/11/2011
1600
>60s
>60s
0
0
16.8
4.7
6/3/2011
1515
>60s
>60s
0
0
17.1
3.8
10/12/2011
1100
>60s
>60s
0
0
14.9
5.6
12/14/2011
1230
>60s
>60s
0
0
14.2
5.7
3/8/2012
1115
>60s
>60s
0
0
1 14.9
5.0
6/14/2012
1100
>60s
>60s
0
0
14.7
4.9
9/26/2012
1130
>60s
>60s
0
0
14.6
4.8
12/3/2012
1130
>60s
>60s
0
0
16.0
5.8
3/27/2013
1130
>60s
>60s
0
0
16.8
4.4
6/3/2013
1345
>60s
>60s
0
0
14.9
4.5
9/17/2013
1100
>60s
>60s
0
0
10.9
8.5
12/11/2013
1145
>60s
>60s
0
0
13.2
6.9
3/13/2014
1130
>60s
>60s
0
0
16.6
5.9
6/5/2014
1200
>60s
>60s
0
0
15.0
5.1
9/30/2014
1100
>60s
>60s
0
0
12.4
7.6
12/19/2014
1030
>60s
>60s
0
0
12.9
7.0
3/17/2015
1110
>60s
>60s
0
0
14.6
5.4
6/19/2015
1200
>60s
>60s
0
0
16.8
5.7
LG-10
9/14/2015
1330
>60s
>60s
0
0
17.8
3.0
12/1/2015
1100
>60s
>60s
0
0
14.2
5.9
3/15/2016
1100
>60s
>60s
0
0
13.8
4.1
6/29/2016
1105
>60s
>60s
0
0
16.9
5.5
9/16/2016
1130
>60s
>60s
0
0
15.2
5.3
12/30/2016
1030
>60s
>60s
0
0
18.7
4.3
3/24/2017
1000
>60s
>60s
0
0
14.4
3.7
6/9/2017
1115
>60s
>60s
0
0
15.1
5.6
9/1/2017
1100
>60s
>60s
0
0
17.6
3.8
12/22/2017
1115
>60s
>60s
0
0
15.8
3.7
3/30/2018
1030
>60s
>60s
0
0
15.2
3.7
6/15/2018
1000
>60s
>60s
0
0
12.5
6.5
9/22/2018
1130
>60s
>60s
0
0
13.0
6.3
12/26/2018
1250
>60s
>60s
0
0
13.6
4.7
3/9/2019
1505
>60s
>60s
0.4
0.02
16.2
2.3
6/29/2019
920
>60s
>60s
0
0
17.1
2.3
9/25/2019
1150
>60s
>60s
0
0
18.0
2.5
12/21/2019
1340
>60s
>60s
0
0
16.9
3.8
3 8 2020
1350
>60s
>60s
0.1
0.005
15.6
33
5 of 6

Table A
Landfill Gas Monitoring Results (2010 - 2020)
BASF Enka Landfill
Former BASF Manufacturing Facility
Enka, NC
LFG SAMPLE 1 Sample Sample Tube Time % CH4
WELL ID DATE Time Purge Pumped By Volume %LEL % 02 % CO2
Notes:
Landfill gas data were collected using a calibrated Landtec GEM 2000+.
Landfill gas data collectedduring and after December 2019 were collected using a calibrated Landtec GEM 5000.
CH4 = Methane; 02 = Oxygen; CO2 = Carbon Dioxide; LEL = Lower Explosive Limit; 5% CH4 = 100 % LEL
6 of 6

Table B
VOCs in Site Monitoring Points
BASF Enka Closed Industrial Landfill
Enka, North Carolina
Monitoring Well
Volatile Organic Compounds
and Surface
Water I.D.
Sample Date
Acetone
2-Butanone
Benzene
1,2
Dichloroethane
Carbon
Disulfide
Chlorobenzene
1,4-
Dichlorobenzene
cis-1,2
Dichloroethene
1,4-Dioxane
Toluene
Vinyl
Chloride
Units
u /L
u /L
ug/L
ug/L
ug/L
ug/L
u /L
ug/L
ug/L
ug/L
ug/L
MW-3
5/1/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-3
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
0.99 J
0.58 J
<0.15
<PQL
<PQL
<0.32
MW-3 F
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
0.53 J
<0.19
<0.15
<PQL
<PQL
<0.32
MW-3
4/16/2015
<1.2
<1.3
<0.15
<0.21
<1.5
1.2
<0.19
<0.15
1 <PQL
<0.14
<0.32
MW-3
10/13/2015
<1.2
<1.3
<0.15
<0.21
<1.5
1.4
<0.19
<0.15
1 <PQL
<0.14
<0.32
MW-3
4/14/2016
<1.2
<1.3
<0.15
<0.21
<1.5
0.63 J
0.42 J
<0.15
<PQL
<0.14
<0.32
MW-3
10/13/2016
<10
<PQL
<0.15
<0.21
<1.5
1.2
<0.19
<0.15
<PQL
<0.14
<0.32
MW-3
4/26/2017
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-3
10/31/2017
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-3
4/10/2018
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-3
10/1/2018
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-3
4/5/2019
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-3
10/13/2019
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-3
4/5/2020
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-3 (Duplicate)
5/1/2014
<PQL
<PQL
<PQL
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-3 (Duplicate)
11/11/2014
<PQL
<PQL
<PQL
<PQL
<1.5
1.11
0.64 J
<0.15
<PQL
<PQL
<0.32
MW-3 (Duplicate)
4/16/2015
<1.2
<1.3
<0.15
<0.21
<1.5
1.3
<0.19
<0.15
<PQL
<0.14
<0.32
MW-3 (Duplicate)
10/13/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
1.3
<0.15
<PQL
<0.14
<0.32
MW-3 (Duplicate)
4/14/2016
<1.2
<1.3
<0.15
<0.21
<1.5
0.78 J
0.48 J
<0.15
<PQL
<0.14
<0.32
MW-3 (Duplicate)
10/13/2016
<10
<1.3
<0.15
<0.21
<1.5
1.2
<0.19
<0.15
<PQL
<0.14
<0.32
MW-4R
5/1/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-4R
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-4R F
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-4R
4/16/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-4R
10/13/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-4R
4/14/2016
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-4R
10/13/2016
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-4R
4/26/2017
<10
3.2 J
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-4R
10/31/2017
<2.0
<PQL
<0.40
<0.40
<0.40
<0.40
<0.40
<0.40
<PQL
<0.40
<0.40
MW-4R
4/10/2018
<2.0
<PQL
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<PQL
<0.4
<0.4
MW-4R
10/1/2018
<0.9
<PQL
<0.05
<0.05
<0.07
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
MW-4R
4/5/2019
2.2 J
<PQL
<0.05
<0.05
<0.06
<0.06
<0.07
<0.05
<0.2 U
<0.07
<0.1
MW-4R
10/13/2019
<0.9
<PQL
<0.05
<0.05
<0.06
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
MW-4R
4/5/2020
<0.7
<0.3
<0.2
<0.3
<0.2
<0.2
<0.2
<0.2
<PQL
<0.2
<0.2
MW-4R DUP
10/1/2018
<0.9
<PQL
<0.05
<0.05
<0.07
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
MW-4R DUP
4/5/2019
2.5 J
<PQL
<0.05
0.05 J
<0.07
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
MW-4R DUP
10/13/2019
<0.9
<PQL
<0.05
<0.05
<0.06
<0.06
<0.07
1 <0.05
<PQL
<0.07
<0.1
MW-5
5/1/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-5
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-5 F
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-5
4/16/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-5
10/13/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-5
4/14/2016
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-5
10/13/2016
<10
<PQL
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-5
4/26/2017
<10
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-5
10/31/2017
<2.0
<PQL
<0.40
<0.40
<0.40
<0.40
<0.40
<0.40
<PQL
<0.40
<0.40
MW-5
4/10/2018
<2.0
<PQL
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<PQL
<0.4
<0.4
MW-5
10/1/2018
<0.9
<PQL
<0.05
1 <0.05
1.3
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
MW-5
4/5/2019
2.0 J
<PQL
<0.05
<0.05
<0.06
<0.06
<0.07
<0.05
8.6
<0.07
<0.1
MW-5
10/13/2019
<0.9
<PQL
<0.05
<0.05
<0.06
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
MW-5
4/5/2020
<0.7
<0.3
<0.2
<0.3
<0.2
<0.2
<0.2
<0.2
<PQL
<0.2
<0.2
MW-6
5/1/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-6
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-6 F
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
MW-6
4/16/2015
<1.2
<PQL
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-6
10/13/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-6
4/14/2016
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-6
10/13/2016
<10
<PQL
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
MW-6
4/26/2017
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-6
10/31/2017
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-6
4/10/2018
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-6
10/1/2018
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-6
4/5/2019
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-6
10/13/2019
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM
MW-6
4/5/2020
NM
NM
NM
NM
NM
NM
NM
NM
<PQL
NM
NM

Table B
VOCs in Site Monitoring Points
BASF Enka Closed Industrial Landfill
Enka, North Carolina
Monitoring Well
Volatile Organic Compounds
and Surface
Water J.D.
Sample Date
Acetone
2-Butanone
Benzene
1,2
Dichloroethane
Carbon
Disulfide
Chlorobenzene
1,4-
Dichlorobenzene
cis-1,2
Dichloroethene
1,4-Dioxane
Toluene
Vinyl
Chloride
SW-1
5/1/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
SW-1
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
SW-1
4/16/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
SW-1
10/13/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
SW-1
4/14/2016
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
SW-1
10/13/2016
<10
<PQL
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
SW-1
4/26/2017
<10
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
SW-1
10/31/2017
3.1 J
<PQL
<0.40
<0.40
<0.40
<0.40
<0.40
<0.40
<PQL
<0.40
<0.40
SW-1
4/10/2018
<2.0
<PQL
<0.40
<0.4
<0.4
<0.4
<0.4
<0.4
<PQL
<0.4
<0.4
SW-1
10/1/2018
<0.9
<PQL
<0.05
<0.05
<0.07
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
SW-1
4/5/2019
2.3 J
<PQL
<0.05
0.05 J
<0.06
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
SW-1
10/13/2019
<0.9
<PQL
<0.05
<0.05
<0.06
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
SW-1
4/5/2020
0.9 J
<0.3
<0.2
<0.3
<0.2
<0.2
<0.2
<0.2
<PQL
<0.2
<0.2
DW-2
5/1/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
DW-2
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
DW-2
4/16/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
DW-2
10/13/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
DW-2
4/14/2016
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
DW-2
10/13/2016
<10
<PQL
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
DW-2
4/26/2017
<10
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
DW-2
10/31/2017
3.4 J
<PQL
<0.40
<0.40
<0.40
<0.40
<0.40
<0.40
<PQL
<0.40
<0.40
DW-2
4/10/2018
<2.0
<PQL
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
j <PQL
<0.4
<0.4
DW-2
10/1/2018
1.3 J
<PQL
<0.05
<0.05
<0.07
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
DW-2
4/5/2019
3.1 J
<PQL
<0.05
0.05 J
<0.06
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
DW-2
10/13/2019
<0.9
<PQL
<0.05
<0.05
<0.06
<0.06
<0.07
0.05 J
<PQL
<0.07
<0.1
DW-2
4/5/2020
0.8 J
<0.3
<0.2
<0.3
<0.2
<0.2
<0.2
<0.2
<PQL
<0.2
<0.2
Seep-1
4/7/2011
<PQL
<PQL
0.9 J
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
Seep-1
10/10/2011
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
Seep-1
4/9/2012
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
Seep-1
10/11/2012
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
Seep-1
4/22/2013
<PQL
<PQL
1.2
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
Seep-1
8/1/2013
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
Seep-1
10/23/2013
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
Seep-1
5/1/2014
<PQL
<PQL
0.81 J
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32
Seep-1
11/11/2014
<PQL
<PQL
<0.15
<PQL
<1.5
<0.17
<0.19
<0.15
<PQL
<PQL
<0.32-
Seep-1
4/16/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
Seep-1
10/13/2015
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
Seep-1
4/14/2016
<1.2
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
Seep-1
10/13/2016
<10
<PQL
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
Seep-1
4/26/2017
<10
<1.3
<0.15
<0.21
<1.5
<0.17
<0.19
<0.15
<PQL
<0.14
<0.32
Seep-1
10/31/2017
<2.0
<PQL
<0.40
<0.40
<0.40
<0.40
<0.40
<0.40
<PQL
<0.40
<0.40
Seep-1
4/10/2018
<2.0
<PQL
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<PQL
<0.4
<0.4
Seep-1
10/1/2018
<0.9
<PQL
<0.05
<0.05
<0.07
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
Seep-1
4/5/2019
1.2 J
<PQL
0.05 J
<0.05
<0.06
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
Seep-1
10/13/2019
2.6 J
<PQL
<0.05
<0.05
<0.06
<0.06
<0.07
<0.05
<PQL
<0.07
<0.1
Seep-1
4/5/2020
<0.7
<0.3
<0.2
<0.2
1 <0.2
<0.2
<0.2
<0.2
<PQL
<0.2
<0.2
Notes:
For non -detect measurements (<), the detection limit (Practical Quantitation Limit or PQL) is listed.
ug/L - micrograms per liter or parts per billion (ppb)
mg/L - milligrams per liter or parts per million (ppm)
1.3 Compounds detected above PQL
J - Indicates the analytical result is an estimated concentration between the method detection limit and the laboratory method reporting limit.
D - The sample was analyzed at dilution.
B - The analyte was detected in the associated method blank.
NM - Not measured
NA - Not Analyzed

Table C
Inorganics and Wet Chemistry in Site Monitoring Points
BASF Enka Closed Industrial Landfill
Enka, North Carolina
Notes,
For non -detect measurements (<), the detection limit (Practical Quantitatlon Limit or PQL) Is llsted.
ug/L - micrograms per liter or parts per billion (ppb)
mg/L - milligrams per liter or parts per million (Ppm)
1.3 Compounds detected above PQL
Me analytical
J - Indicates result is an estimated concentration between the method detection limit and the laboratory method reporting limit.
D - The sample was analyzed at dilution.
B - The analyte was detected in the associated method blank.
NM - Not measured
NA - Not Analyzed

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ELM Site Solutions, Inc.
P.O. BOX 97607
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Figure B - Monitoring Wells and Surface Water Sample Locations
BASF Enka Monitoring Program
BASF Closed Industrial Landfill
Enka, North Carolina
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Surface Water Sample Location
Groundwater Monitoring Well Location
0 350
Scale: 1" _ -350'
Date: June 4, 2019
Source: Buncombe County GIS
2015 Aerial