8602_Surry_MtAiry_MSWLF_CDLF_Notification_FID1358249_20190917

NC DEQ 14-Day Notification of Groundwater
Division of Waste Management - Solid Waste Protection Standard Exceedance(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, tJCDEQ-DWM, Solid Waste
Section, 1646 Mail Service Center, Raleigh, NC 27699-1646,
Solid Waste Monitoring Data Submittal information
of entity submitting data (laboratory, consultant, facility owner):
Municipal Engineering Services Co., PA
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]
Facility name:
Surry County Closed CDLF and
Closed Unlined Landfill
Facility Address:
237 Landfill Road
Mt. Airy, NC 27030
Facility Permit #
86-02
Actual sampling dates (e.g.,
October 20-24, 2006)
ay 17, 2019
agust 29, 2019 Verification
Environmental Status: (Check all that apply)
❑ Initial/Background Monitoring Detection Monitoring OX Assessment Monitoring QX Corrective Action
Additional Information:
A notification of values exceeding a groundwater protection standard as defined in 15A NCAC 136 .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.
❑X 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 an 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. 1 am aware that there
are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment.
Steven R. Gandy, Ph. D., P.E. Senior Project Manager [phone]
Facility Represent tiv Name (Print Title (Area Code) Telephone Number
Affix NC Licensed/Professional Geologist or Professional
2 1 r r r ci Engineer Seal
Facility Representative Address
NC PG/PE Firm License Number (if applicable effective May 1, 2009)
Revised 6l2016

Yn E
MUNICIPAL ENGINEERING
SERVICES COMPANY9 P.A.
GARNER, NO AND B❑❑NEB NO
September 12, 2019
Ms. Jaclynne Drummond
Solid Waste Section (SWS)
2090 US 70 Highway
Swannanoa, NC 28778
Re: 14-Day Notification of an Exceedance of Benzene and Vinyl Chloride in MW-20
Surry County Closed C&D and Closed Unlined MSWLF, Mount Airy
Permit No. 8602-MSWLF-1983
MESCO Project No. G19031.0
Event Date(s): May 17, 2019
August 29, 2019 Verification sample MW-20
Dear Ms. Drummond:
Samples collected from MW-20 downgradient of the Surry County closed unlined landfill located in Mount Airy contained
unprecedented concentrations of VOC(s). During the most recent semi-annual monitoring event performed on May 17, 2019
samples collected from MW-20 contained benzene at 1.15 ug/L and vinyl chloride at 3.59 ug/L which were above their respective
NC 2L Groundwater Standards 1.0 ug/L and 0.03 ug/L. A subsequent verification sample collected from MW-20 on August 29,
2019 contained vinyl chloride at 1.3 ug/L which remains above the 2L Standard (0.03 ug/L) but benzene levels fell to 0.58 ug/L
which is below the Standard (1.0 ug/L). A table summarizing the detections of MW-20 and MW-9 compared to Standards and a
potentiometric map are attached.
MW-20 is located approximately 100 feet southwest of MW-9 and was installed in 2007 to delineate the horizontal extent of a
release from the oldest Northern unlined landfill which was permitted in 1983 and ceased waste acceptance prior to 1992. During
the semi-annual event MW-20 contained the same 15 detections as MW-9 but at generally lower concentrations. MW-9 is under
corrective action in the form of monitored natural attenuation (NINA) in response to consistent detections of VOCs. The observed
low levels of contaminates coupled with the location of the local discharge features relative to the compliance boundary makes it
unlikely that groundwater is or will become impacted above allowable levels beyond the compliance boundary. The local
discharge feature directly downgradient of MW-20 is monitored by SW-2, which has not contained contaminates above established
NC 2B Standards since May 8, 2008.
The full semi-annual monitoring report for this spring 2019 event is planned to be submitted soon. Assessment monitoring and
corrective action is planned to continue indefinitely.
68 Shipwash Drive • Garner, NC 27529 • ph: 919-772-5393 • fx: 919-772-1176 • www.mesco.com
LICENSE NUMBER: C-0281

If you have any questions or concerns regarding this project, please contact us at [phone] or by email.
Sincerely,
MUNICIPAL ENGINEERING SERVICES CO., P.A.
�9-0
Jonathan Pfohl
Environmental Specialist
jpfohlnmesco.com
Enclosures
cc: Ms. Jessica Montgomery
Surry County
Steven R. Gandy, Ph.D, P.E.
Senior Project Manager
[e-mail]

Table 1
Detections in Groundwater Samples MW-9 and MW-20
May 17, 2019
August 29, 2019 Verification sample MW-20
Parameter Name
MDL
RL
2L/GWP/IMAC
MCL
MW-9
(5/17/19)
MW-20
(5/17/19)
MW-20
(8/29/19)
STANDARD
S
S
S
Metals
Tar eted 40CFR 258 Appendix I
Barium, total
1
5
700
2000
40.2 J
36.6 J
Beryllium, total
0.2
1
4
4
Cadmium, total
0.4
1
2
5
29.5 (N)
0.91 J
Chromium, total
1
5
10
100
1.4 J
1 J
-
Cobalt, total
1.1
5
1
NE
230 (N)
90.1 (N)
Copper, total
2.1
5
1000
1300
Lead, total
1.6
5
15
15
Nickel, total
0.9
5
100
NE
7.1 J
4 J
Thallium, total
0.06
0.1
0.28
2
0.3 J
0.51 J
-
Vanadium, total
1.3
5
0.3
NE
Zinc, total
3.9
10
1 1000
NE
1 4.5 J
1 8.8 J
VOCs (Targeted 40CFR 258 Appendix I and 1,4-Dioxane)
1,1-Dichloroethane
0.27
1
6
NE
1.24 J
1.04 J
1,2-Dichlorobenzene
0.29
1
20
NE
0.77 J
1.04 J
0.47 J
1,4-Dichlorobenzene
0.26
1
6
75
3.48
2.91
1.4
Benzene
0.15
1
1
5
1.32 (L)
1.15 (L)
0.58 J
Chlorobenzene
0.23
1
50
100
1.12 J
1.13 J
Chloroethane
0.49
5
3000
NE
1.3 J
0.69 J
cis- 1,2-Dichloroethene
0.29
1
70
70
35.32
6.5
2.9
Vinyl chloride
0.24
1
0.03
2
12.38 (L)i
3.59 (L)
1 1.3 (L)
Turbidity (Field Measured) (NTU)
Turbidity (NTU) 0.01 1 -- NE I NE 1.81 1 6.07
Notes:
Units ug/L unless shown otherwise, Blank cells means not detected above MDL, -- means parameter not analyzed, NE means not established
Bold Above Established 2L/GWP/IMAC Standard (Regulatory compliance Standard)
Green Highlighted Above Established MCL Drinking Water Std. (No regulatory significance)
Bordered Unprecedented Exceedance of 2L/GWP/IMAC Standard
BG= Background Well Sample, QC = Quality Control Sample, S = Sentinel Well Sample, WSW=Water Supply Well Sample.
MDL = Adjusted 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 "J" qualifier designation.
RL = Reporting Limit established by the laboratory. The lowest concentration value that meets project requirements for quantitative data with known precision and bias for a specific analyte
in a specific matrix
2L/GWP/IMAC Standard = NC 2L /GWP and IMAC Standards adopted and enforced by the INC SWS,
2L = NC 2L Groundater Standard 15A NCAC 02L .0202 adopted by NC SWS as a regulatory groundater Standard.
GWP=Groundwater Protection Standard adopted by NC SWS as a regulatory groundater Standard.
IMAC=Interim Maximum Allowable Concentration adopted by NC SWS as a regulatory groundater Standard.
MCL = Maximum Contaminant Level for drinking water established by the USEPA.
J = "J-qualified". Defined by the lab as "estimated concentration above the adjusted method detection limit and below the adjusted 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 Ieachate as suspected transport mechanism.
A definitive source of the detections was not determined as part of this report.
Surry County Closed CDLF and Closed MSWLF, Mt. Airy Page 1 of 1

■ I M
237 LANDFILL ROAD
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y
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II GWE=1062.19
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NLINED, ,C,.1&/lD\�(8�60_2--C�DL,FA-2001)IlSTOPPED RECEIVING C&D BEFORE JUNE 30, 2008
llCLOSURE REQUIREMENTS COMPLETED BEFORE MAY 30, 2009
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ll / Il l//l//// �l Ill/ ,/� v /i/ /i70 / ////�/� 11 VA v i l I III IIII IIII I l vvwv� ll I IIII IIII I(I)I��
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,CLOSED C&D OVER CLOSED UNLINED MSW (8602-CDLF ON TOP OF MSW)
STOPPED RECEIVING C&D BEFORE MARCH 3, 2006
/%/ STOPPED RECEIVING MSW BY JAN. 1, 1999
LFG EXTRACTION SYSTEM
MW-12D*���/�/i/�,�ii/�/%%/_
IW-2 I�11111 \1� w�w� �wE=>�o27.05
GWE=1027.97
Jill Il�.
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oA
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�060 Illlll I r� II III II \ �\ _ ; /' 00000
ll I III II l IIIIMW-18 /
=974.69 /GWE
l,�l ll�fllllr�l � l���l\ II Il 11 l I !lI'
II I l \ IW-3/l ll ll l II _ III I
III I II \ \\ \ GWE=990.36
/(I^w3�
MW-3R* I GWE=985.28�1
WE_977.
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OW4-20 ��\�\\�\\\\\\\\\\\\�\� ��Q���=�/IIII l \II\\\ �� ���\\ -
\ \\\\\\ � \\\ r �_ GWE=989.28 // / SW;1 i\IIII\� �/ /i / � / // l/ ll
\\� \\\\\\\\\\\\� _—_�/� �I \\\\ 1,2-Dic oroe ane -1.23 \,L 1 \ ��\\III 1 \ \\ \ /%% Iw IW 5 f I l flll II 1 i� _ — r / i //// / /(� /; — /
GWE=1066.35 �\ \\\ \\�\ \ \ \\\�\�\\ \ �� — �� (III l� 2-Dichloro ro ane - 0.82 J MW„16 \� I IIIII ll \\\ // / / / f / 1 /I I I / /�� —� /\ / / \ i j/�/%ii�/�/ice//j//// // / J _ _ / / l/a OPERTY LINE
- - GWE=973.14
1,4 Dichlorobenzene 6.2
Vinyl Chloride - 2.33 /// ! /ii
SW-3
/
Benzene -1.28
MW-14////// MW-21
GWE=956.21
J1111IIIII
\
INACTIVE LINED —
//i PHASE 1
PTO 12/1/98
MONITORED SEPERATELY
ACTIVE LFG EXTRACTION
NOW OR FORMERLY
OWNED BY
JOHNNY COX
\�\\�\\I1111111{�111111\� (I1�\r�
\\� \��
v SWN-1 (-350 FT UPSTREAM)
\ / I
MW-15
1,1-Dichloroethane-7.14
1,2-Dichloroethane - 0.48
GWE=948.04 \l\ \\\\ \ — J //i=�� Vinyl Chloride - 2.43
GWE=949.22�������\\\
GWE=937.17� �( l l� \VAS _ - ��
� — — — � � ���) �� — � � NOW OR FORMERLY
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�—,940� 1 \� ����if / /
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LAGOON
SWN-2 (-1,420') & SW-C (-450')
DOWNSTREAM)
LEGEND
EXISTING TOPOGRAPHIC CONTOURS
EXISITING ROAD/PATH
EXISTING CHAINLINK FENCE
EXISTING STRUCTURE
PERENNIAL CREEK, STREAM, ETC.
INTERMITTANT CREEK, STREAM, ETC.
PROPERTY LINE
LINED MSWLF PHASE LIMITS
UNLINED WASTE LIMITS (APPROXIMATE)
COMPLIANCE BOUNDARY
1060 POTENTIOMETRIC GROUNDWATER CONTOUR (5/16-17/2019
GWE = 2626.85 GROUNDWATER POTENTIOMETRIC ELEVATION
*MW- ELEVATION NOT USED FOR CONTOURING
ESTIMATED EXTENT OF VOC VIOLATIONS (MAY 2019)
BEYOND COMPLIANCE BOUNDARY (-4 ACRES)
sw SURFACE WATER SAMPLING LOCATION
"': MONITORING WELL EXISTING
1w INJECTION WELL EXISTING
WATER SUPPLY WELL EXISTING
(CONSIDERED NON -POTABLE)
GRAPHIC SCALE 100 2
( IN FEET )
I inch = ft.
SHEET 2
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SCALE: SEE SCALE BAR
DATE: 06118119
DRWN. BY: J. PFOHL
CHKD. BY: S. GANDY
PROJECT NUMBER
DRAWING NO. SHEET NO.
SHEET 2 1 OF 1