1403_Caldwell_Foothills_MSWLF_NotificationGW_FID1529836_20210215

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LNVIKUNIVILN IHL
C O N S U L T I N G
February 15, 2021
Ms. Jackie Drummond
Compliance Hydrogeologist
North Carolina Department of Environmental Quality
Division of Waste Management - Solid Waste Section
Asheville Regional Office (ARO)
2090 US Highway 70
Swannanoa, North Carolina 28778
Re: Notification of Appendix II Detections
Foothills Regional Landfill, Permit No. 14-03
Caldwell County, North Carolina
Dear Ms. Drummond:
Submitted via Electronic Mail
On behalf of the Foothills Regional Landfill, Jett Environmental Consulting is submitting notification of Appendix II
constituents detected in site groundwater monitoring wells during the First Semi -Annual 2021 sampling event. This
notification is in accordance with North Carolina Department of Environmental Quality (DEQ) Requirements for
Municipal Solid Waste Landfill Facilities Section .1634(d), which states the following:
"After obtaining the results from the initial or subsequent sampling events required in Paragraph (b) of this Rule,
the owner or operator shall: (1) Within 14 days, submit a report to the Division and place a notice in the operating
record identifying the Appendix 11 constituents that have been detected,"
Groundwater sampling was completed by Environmental Sampling & Services, Inc. (ES&S) on February 1,
2021. Analytical testing was performed by Pace Analytical Services, LLC for the annual Appendix II sampling
event for well MW-2R. Results were received by Jett Environmental Consulting on February 11, 2021. The
attached Table 1 summarizes the Appendix II constituents that were detected above the laboratory practical
quantitation limits (PQLs) during the First Semi -Annual 2021 event. The Appendix II constituents detected at
quantified levels are also on the Appendix I Detection Monitoring list. The Appendix I parameters detected
(barium and benzene) are consistent with past events.
The attached Table 2 summarizes the Appendix I I constituents that were reported at estimated values between
the method detection limit (MDL) and the PQL. Any analyte detected at a concentration greater than the MDL
but less than the PQL is believed to be present, but the uncertainty in the value is high (i.e., laboratory
interferences). As a result, the actual concentration is estimated. No further action is required based on the
estimated results.
The full groundwater report and statistical evaluation is currently being compiled and will be submitted per
Sections .1632 and .1633. The groundwater report will provide recommendations regarding Assessment and
Appendix II monitoring activities.
Should you have any questions or concerns, please contact Mr. Derek Bouchard at [phone] or Steve
Jett at [phone].
1002 Morgan Meadow Drive 314-496-4654
Wentzville, MO 63385 www.jettenviro.com

Sincerely,
4-
Steve Jett, LG #1825
Owner, Jett Environmental Consulting, PLLC (C-517)
Attachments: Table 1- Appendix 11 Detections Above the PQL
Table 2 — Appendix 11 Estimated Results Below the PQL
cc: Derek Bouchard, Republic Services, Inc. (via electronic mail)

Table 1
Appendix II Detections Above the PQL
First Semi -Annual 2021 Sampling Event
Foothills Regional Landfill
Well Constituent Results PQL MDL Units
MW-2R Barium, total 282 100 0.71 ug/L
Benzene 2.0 1 0.15 u /L
PQL: Laboratory Practical Quantitation Limit.
MDL: Laboratory Method Detection Limit.

Table 2
Appendix II Estimated Results Below the PQL
First Semi -Annual 2021 Sampling Event
Foothills Regional Landfill
Well
Constituent
Flag
Results
PQL
MDL
Units
1,1-Dichloroethane
J
0.88
5
0.27
u /L
MW-2R
Beryllium
J
0.14
1
0.046
u /L
cis-1,2-Dichloroethene
J
3.1
5
0.29
u /L
X lene Total
J
1.5
5
0.63
u /L
PQL: Laboratory Practical Quantitation Limit.
MDL: Laboratory Method Detection Limit.
J: Denotes sample result above the MDL but below the PQL; estimated value;
value may not be accurate.