0201_Alexander_MSWLF_CDLF_GWNotification_FID1833616_20240403

MUNICIPAL ENGINEERING? INC.
68 SHIPWASH DRIVE, GARNER, NC 27529 - PHONE: [phone]
P.O. Box 349, B❑❑NE, NC 28607 - PHONE: [phone]
LICENSE NUMBERS: F-081 2 & C-586
April 2, 2024
Ms. Jaclynne Drummond
Solid Waste Section (SWS)
Division of Waste Management
North Carolina Department of Environmental Quality (NCDEQ)
2090 US Highway 70.
Swannanoa, NC 28778-8211
Re: 14-Day Notification of an Exceedance of 1,4-Dioxane in 12 Groundwater Samples
Alexander County Active C&D and Unlined Closed Landfill
Event Date: December 28-30, 2023
Permit No. 02-01
Dear Ms. Drummond:
During the latest semi-annual water quality monitoring event performed at the Alexander County Active CDLF
and Unlined Closed Landfill a concentration of 1,4-dioxane (cas#123-91-1) was detected above the NC 2L
Standard (3 ug/L) in 12 groundwater samples as listed below:
MW-3
MW-4R
MW-5
MW-7
MW-9
MW-11
MW-12
MW-12D
MW-14
MW-16
MW-26
MW-27
5.8
8
4
15.5
59.3
15.4
4.2
19.1
13.8
6.2
12.3
4.8
ug/L
Since this is the first time that 1,4-dioxane has been detected above the 2L Standard a 14-Day notification form
and detections table is attached. The facility is already under assessment monitoring in response to detections
of other volatile organic compounds (VOCs) at these and other wells. The preliminary release mechanism of
the VOCs is believed to be a release from the landfill. The full Water Quality Monitoring Report for this
Winter 2023 event is planned to be submitted prior to the 120-day deadline and assessment/corrective action
monitoring will continue semi-annually. If you have any questions or concerns regarding this project, please
contact us by phone at [phone] or by email at [e-mail].
Sincerely,
MUNICIPAL ENGINEERING INC.
Qj)j
Jonathan Kohl
Environmental Specialist
cc: Mr. Josh Mitchell
Alexander County Solid Waste Director
Shipwash Drive • Garner, NC 27529 • ph: 919-772-5393 fx: 919-772-1176 www.mesco.com

NC DEQ 14- ay Notification of Groundwater
Division of Waste Management - Solid Waste Protection Standard xceedance(s)
per rule:15A NCAC 1313.1633(c)(1)
Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1. As such, these documents are
available for inspection and examination by any person upon request (NC General Statute 132-6).
Instructions:
Prepare one form for each individually monitored unit.
Please type or print legibly.
Attach a notification table with values that attain or exceed applicable groundwater protection standards.
Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDEQ-DWM, Solid Waste
Section, 1646 Mail Service Center, Raleigh, NC 27699-1646.
Solid Waste Monitoring Data Submittal Information
Name of entity submitting data (laboratory, consultant, facility owner):
Municipal Engineering Inc.
Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address:
Name: Jonathan Pfohl Phone: [phone]
E-mail: [e-mail]
Actual sampling dates (e.g.,
Facility name: Facility Address: Facility Permit # October 20-24, 2006)
Alexander Co Active CDLF and 2500 Paynes Dairy Rd 02-01 December 28-30, 2023
Closed Unlined MSWLF Taylorsville, NC 28681
Environmental Status: (Check all that apply)
❑ Initial/Background Monitoring ® Detection Monitoring ® Assessment Monitoring ® Corrective Action
Additional Information:
A notification of values exceeding a groundwater protection standard as defined in 15A NCAC 13B .1634(g)(h) is attached. It includes a list of
groundwater monitoring points, dates, analytical values, NC 2L groundwater standard, NC Solid Waste GWPS and preliminary analysis of the
cause and significance of any concentration.
❑ A re -sampling event was conducted to confirm the exceedances.
❑ Alternate Source Demonstration(s) have been approved for the following constituents with report date:
Certification
To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct.
Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas
levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there
are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment.
Jonathan Pfohl _ Environmental Specialist [phone]
lity Representative Name (Print) Title (Area Code) Telephone Number
i Affix NC Licensed/Professional Geologist or Professional
Engineer Seal
Date
68 Shipwash Dr Garner NC 27529
Facility Representative Address
NC PE Firm # F-0812 NC PG Firm # C-586
NC PG/PE Firm License Number (if applicable effective May 1, 2009)
Revised 6/2016

Table 1
Groundwater and Quality Control Sample Detections
December 28-30, 2023
MW-18
MW-1
MW-1B
MW-2
MW3
MW-4R
MW-5
MW-6
MW-7
MW-9
MW-10
MW-11
MW-12
MW-12D
MW-13
MW-14
MW-15
MW-16
MW-17
MW-19
MW-20
MW-21
MW-22
MW-23
MW-24
MW-25
MW-26
MW-27
MW31
MW-32
MW-33
MW-34
EB
FB
TB
Parameter Name
MDL
RL
2L STANDARD
MCL
BG
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
QC
QC
QC
Metals (Targeted 40CFR 258 Appendix I and Mercury)
Antimony, total
0.5
1
1
6
0.59 J
-
-
Arsenic, total
0.5
1
10
10
0.7 J
0.55 J
1.9
0.58 J
-
-
Barium, total
0.5
1
700
2000
27.4
29.7
51.6
23.5
49.8
99
61
17.9
8.4
304
33.2
195
126
11.2
15.9
110
54.2
83.4
57.2
11.1
52.3
39.2
9.3
23.8
58.4
25.1
79.3
43.3
119
11
18.7
18.9
-
-
Beryllium, total
0.033
0.1
4
4
0.066 J
0.13
0.11
0.14
0.12
0.36
0.72
0.059 J
0.074 J
0.033 J
0.099 J
0.46
0.064 J
0.11
0.042 J
0.12
0.13
0.13
0.055 J
0.083 J
0.057 J
0.21
0.062 J
0.048 J
-
-
Cadmium, total
0.067
0.1
2
5
0.089 J
0.093 J
0.12
0.37
0.96
0.91
0.11
1.7
0.59
0.19
0.97
0.45
0.3
0.1
0.34
0.37
0.52
0.53
0.17
2.6
0.13
0.085 J
0.47
0.097 J
-
-
Chromium, total
0.5
1
10
100
4.2
0.52 J
1.8
3.3
0.94 J
0.84 J
2.4
0.66 J
0.91 J
0.58 J
0.62 J
2.6
0.61 J
0.53 J
0.75 J
0.75 J
0.89 J
5
3 22
3.4
0.5 J
6.3
1.9
0.59 J
0.67 J
-
-
Cobalt, total
0.24
1
1
NE
3.7 (N)
16.5
59.9 (N)
127 (L)
7.4 (N)
355 (L)
12.6
0.68 J
463 (L)
0.27 J
106 (L)
119(L)
0.27 J
1.7 (N)
178(L)
31.6(L)
449(L)
19.4(N)
0.58 J
9.5 (N)
1.3 (N)
4.2(N)
14(N)
1.5(N)
65.5(L)
2.3(N)
2(N)
0.88 J
7.4(N)
0.62 J
-
-
Copper, total
0.42
1
1000
1300
9.6
1.7
1.1
2.4
3.8
0.8 J
5.3
0.62 J
2.5
1.6
2.2
1.3
0.91 J
0.93 J
3.9
0.75 J
1.4
1.3
0.48 J
0.42 J
3.2
0.9 J
4.5
2
1.6
1.4
0.84 J
-
-
Lead, total
0.22
1
15
15
1.1
0.32 J
1.3
0.83 J
0.28 J
0.33 J
0.38 J
0.28 J
0.93 J
0.24 J
0.36 J
1
0.38 J
0.72 J
0.54 J
0.44 J
-
-
Nickel, total
0.26
1
100
NE
5.2
5.9
5.4
5
5.1
8.4
3.2
0.86 J
0.99 J
54.9
2.6
12.5
9.8
1.2
5.9
18.3
1.8
18.4
4
1.4
2.9
2.8
0.64 J
5.1
2.8
2.6
10.6
2.5
3.5
7.4
2.8
1.8
-
-
Selenium, total
0.2
2
20
50
0.48 J
0.27 J
0.38 J
0.24 J
0.82 J
0.69 J
0.49 J
0.22 J
0.26 J
-
-
Silver, total
0.028
0.5
20
NE
0.03 J
0.091 J
-
-
Thallium, total
0.11
1
2
2
0.2 J
0.2 J
0.33 J
0.11 J
0.12 J
0.42 J
-
-
Vanadium, total
0.91
1
7
NE
6.6
1.5
2.5
1.1
2.2
4.9
1.2
1.1
2.5
1.3
-
-
Zinc, total
6.7
10
1000
NE
9.9 J
21.9
11
7.8 J
10.7
35.3
15.3
28
31.4
21.4
19.6
10.5
9.1 J
15.2
9.9 J
7.8 J
12
-
-
Mercury, total
0.14
0.2
1
2
1.1
2
-
--
-
--
0.6
0.8
-
-
VOCs (Targeted 40CFR 258 Appendix 1, THE and 1,4-Dioxane)
1,1-Dichloroethane
0.37
1
6
NE
2.4
0.66 J
0.59 J
4.5
0.69 J
1,2-Dichlorobenzene
0.34
1
20
NE
0.46 J
0.38 J
1,4-Dichlorobenzene
0.33
1
6
75
1.4
0.63 J
5.6
1.6
1.8
1.4
2.7
6.9(L)
7.6(L)
2
0.67 J
2.6
0.46 J
1.4
3.5
1.8
0.61 J
1,4-Dioxane
0.86
2
3
NE
5.8(L)
8(L)
4(L)
15.5(L)
59.3(L)
15.4(L)
4.2(L)
19.1(L)
13.8(L)
6.2(L)
2.4
2.4
12.3(L)
4.8(L)
1.8 J
2.7
Acetone
5.1
25
6000
NE
21.5 J
Benzene
0.34
1
1
5
3.6(L)
0.59 J
2.7(L)
1.8(L)
0.87 J
0.48 J
2.3(L)
2(L)
0.45 J
1.6(L)
1.2(L)
0.59 J
1.9(L)
0.48 J
Chlorobenzene
0.28
1
50
100
1.1
0.7 J
0.53 J
1.3
1.4
1.8
2.2
0.79 J
0.63 J
0.6 J
0.37 J
1.3
0.39 J
Chloroethane
0.65
1
3000
NE
0.9 J
cis-1,2-Dichloroethene
0.38
1
70
70
2.8
2.9
12.8
2.9
7.6
2
6.6
7
0.55 J
3.2
3.1
19.7
0.72 J
1.5
1.4
10.2
5.2
1.4
3.6
Ethylbenzene
0.3
1
600
700
0.96 J
Tetrahydrofuran
3.5
10
2000
NE
18.5
--
--
--
Toluene
0.24
1
600
1000
0.74 J
Trichloroethene
0.38
1
3
5
0.54 J
0.62 J
Vinyl chloride
0.39
1
0.03
2
1.7(L)
0.61 J
0.67 J
Xylene (Total)
0.34
1
500
10000
3.7
MNA Performance Parameters
Alkalinity
5000
5000
NE
NE
233000
159000
411000
-
34800
143000
46000
-
-
-
COD
12500
25000
NE
NE
-
51900
-
-
31000
-
-
-
Chloride
430
1000
250000
NE
-
104000
20900
74400
-
-
16700
47800
23100
-
-
-
Iron, Ferrous
40
500
NE
NE
-
55500
34400
94 J
-
-
8800
1101
-
-
-
Methane
5.3
10
NE
NE
286
5.6 J
-
-
-
-
-
--
--
--
-
-
-
Nitrate
10
40
10,000
NE
--
--
-
330
-
-
470
26 J
310
-
-
-
Sulfate
500
1000
250000
NE
-
-
1050
2750
-
-
3480
4880
969 J
-
-
-
Sulfide
22
100
NE
NE
-
-
38.4 J
-
-
-
-
-
TOC
500
1000
NE
NE
-
5780
1120
2750
-
-
721 J
3620
-4,
o i o
Notes:
Units ug/L unless shown otherwise, Blank cells means not detected above MDL, -- means parameter not analyzed, NE means not established.
Bold Above RL and Established 2L STD recognized by NC SWS as regulatory groundwater Standard
Highlighted Above Established MCL Drinking Water Std. (No regulatory significance)
BG = Background Well Sample, S = Sentinel Well Sample, QC = Quality Control Sample
MDL = Adusted Method Detection Limit established by the laboratory via a statistical calculation.
Since the MDL is below the point of calibration, results reported down to the MDL are not reliable and must be qualified as estimated values and, as such, carry a "" qualifier designation.
RL = Reporting Limit defined by Pace laboratory as "The lowest concentration value that meets proect requirements for quantitative data with known precision and bias for a specific analyte in a specific matrix."
2L = NC 21- Groundater Standard 15A NCAC 02L .0202
MCL = Maximum Contaminant Level for drinking water established by the USEPA.
J = " J-qualified". Defined by the lab as "estimated concentration above the adusted method detection limit and below the adusted reporting limit".
(N) Preliminary source is believed to be Natural originating from erosion of natural deposits. Source not anthropogenic.
(L) Prelilminary source is believed to be anthropogenic with Landfill Gas Wor leachate as suspected transport mechanism.
A definitive source of the detections was not determined as part of this report.
Alexander County Active C&D and Closed MSWLF Page 1 of 1