0601_AveryCountyLandfill_MSWLF_September2015_GW_EnviroMonitoringReport.pdf

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September 2015 Semi-Annual Groundwater Monitoring Report

Avery County Closed MSW Landfill
Spruce Pine, North Carolina
NC Solid Waste Permit No. 06-01

Prepared for:

Avery County Solid Waste
175 Linville Street
Newland, North Carolina 28657

Prepared by:

October 2015

© 2015 Smith Gardner, Inc.
This document is intended for the sole use of the client for which it was prepared and
for the purpose agreed upon by the client and Smith Gardner, Inc.

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Avery County Closed MSW Landfill September 2015 Semi-Annual Report
October 2015 Table of Contents Page i

Avery County Closed MSW Landfill
NC Solid Waste Permit No. 06-01

September 2015 Semi-Annual Groundwater Monitoring Report

Table of Contents
Page

1.0 INTRODUCTION ......................................................................................................... 1 
2.0 SITE GEOLOGY ........................................................................................................... 1 
3.0 SAMPLING PROCEDURES ......................................................................................... 1 
4.0 FIELD AND LABORATORY DATA ................................................................................ 2 
4.1 Field Measurements ................................................................................................. 2 
4.2 Laboratory Analysis ................................................................................................... 2 
4.3 Laboratory Results .................................................................................................... 2 
5.0 GROUNDWATER CHARACTERIZATION ...................................................................... 2 
6.0 CONCLUSIONS .......................................................................................................... 2 

FIGURES
Figure 1 Potentiometric Surface Map

TABLES
Table 1 Groundwater Elevation Data
Table 2 Field Parameters
Table 3 Detected Inorganic Constituents
Table 4 Detected Organic Constituents

APPENDICES
Appendix A Laboratory Analytical Report

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Avery County Closed MSW Landfill September 2015 Semi-Annual Report
October 2015 Page 1
1.0 INTRODUCTION
Avery County is required to submit semi-annual groundwater monitoring reports for the Closed
unlined MSW landfill (permit # 06-01) in accordance with Solid Waste Section Rule 15A NCAC
13B. This report, prepared by Smith Gardner, Inc (S+G), presents the semi-annual sampling for
the event conducted on September 3&4, 2015.

The groundwater monitoring network for the closed unlined MSW landfill includes three
groundwater monitoring wells and two surface water monitoring locations. This report includes
field procedure summaries, laboratory analyses and groundwater characterization for the
Closed MSW site.
2.0 SITE GEOLOGY
The Avery County Closed MSW Landfill is located in the North Carolina Blue Ridge province,
along the eastern limb of the Blue Ridge anticlinorium. Published geologic mapping1 places the
site approximately twelve miles west of the Brevard Zone (measured perpendicular to strike),
which is the boundary of the Blue Ridge Belt and the Piedmont. The principal geologic units
mapped in the immediate vicinity of the site include a mix of metamorphosed sedimentary and
igneous rocks -- termed paragneiss and orthogneiss, respectively -- interlayered with
contemporaneous schist, phyllite, and marble, later injected with various granitic intrusions,
including plutons, pegmatites, and hydrothermal veins. Regional metamorphic grades in the
region include kyanite-grade (high grade) and retrograde chlorite-biotite metamorphism (low
grade).
3.0 SAMPLING PROCEDURES
S+G personnel performed this sampling event that involved collecting samples from two (2)
groundwater wells (MW-1 and MW-2) and two surface water locations (SW-1 and SW-2).
Upgradient groundwater well (MW-3) could not be sampled this event due to well pipe damage.
No boring logs for these monitoring wells could be located in a NCDEQ file search.

Sampling methods followed the protocol outlined in the North Carolina Water Quality
Monitoring Guidance Document for Solid Waste Facilities (North Carolina Department of
Environment and Natural Resources, Division of Waste Management). The depth to water in
each well was gauged prior to purging and sampling. Field measurements for pH, specific
conductivity, turbidity and temperature were recorded at each sampling location.

Samples were collected using new factory sealed Teflon bailers and placed in laboratory
prepared containers for the specified analytical procedures. Groundwater samples were
properly preserved, placed on ice, and transported to the laboratory facility within the specified
hold times for each analysis.

1 North Carolina Geologic Survey at http://www.geology.enr.state.nc.us

Avery County Closed MSW Landfill September 2015 Semi-Annual Report
October 2015 Page 2
A map showing sampling locations is presented as Figure 1. Water table elevations and
available construction details are presented in Table 1.
4.0 FIELD AND LABORATORY DATA
4.1 Field Measurements
Following purging, field parameters for temperature, pH, turbidity and specific
conductance were measured. These results are summarized in Table 2. In general
these measurements were consistent with data from previous events.
4.2 Laboratory Analysis
Ground and surface water samples were transported to Prism Laboratories, Inc.
(Charlotte, NC) where they were analyzed for metals via EPA Test Method 6020A and
organics via EPA Test Method 8260B. Samples were transported under proper chain of
custody. The laboratory report is attached for your review as Appendix A.
4.3 Laboratory Results
No inorganic constituents were detected above the 2L Standard for this event. Only
cobalt in the sample from MW-1 was detected above the GWP Standard.

No organic constituents were detected above the 2L Standard in this event.

No constituents were detected above the 2B Standard for Class C Waters. Laboratory
results are presented in Table 3.
5.0 GROUNDWATER CHARACTERIZATION
A potentiometric surface map was prepared from groundwater data from this sampling event.
The general groundwater flow is toward the southeast across the site toward Brushy Creek.
Hydraulic conductivity data was not available for these wells so groundwater velocities could not
be calculated. The potentiometric surface map is included as Figure 1.
6.0 CONCLUSIONS
Laboratory results indicate the water quality at the Avery County Closed unlined MSW Landfill is
generally consistent with historically reported results. Cobalt detections are likely naturally
occurring due to their presence in soils in this portion of North Carolina. Historic and
background detections indicate their presence is likely not due to landfill activity. The next
groundwater monitoring event is scheduled for March 2016. A report summarizing that event
will be submitted to NCDENR with laboratory analyses.

FIGURE

September 2015 – Semi-Annual Groundwater Report
Avery County Closed MSW Landfill
NC Solid Waste Permit No. 06-01

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0 150'300'
CLOSED AVERY
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September 2015 – Semi-Annual Groundwater Report
Avery County Closed MSW Landfill
NC Solid Waste Permit No. 06-01

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x
l
s

Appendix A
Laboratory Analytical Report

September 2015 – Semi-Annual Groundwater Report
Avery County Closed MSW Landfill
NC Solid Waste Permit No. 06-01

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