5409_LenoirCounty_GWMReport_DIN26154_20150708

Lenoir County Subtitle D Lined MSWLF
LaGrange, North Carolina
July 2015
Permit Number: 54-09
Prepared for
Municipal Engineering Services Company, P.A.Garner and Boone , North Carolina
MESCO Project Number: G15029.0
Semi-Annual Water Quality Monitoring Report
P.O. Box 97
Garner, NC 27529
License No. C-0281

TABLE OF CONTENTS
SECTION
Introduction Page 1
Background Page 1
Sampling Procedure Page 2
Field Parameter Data Page 2
Laboratory Results Page 2
Quality Control Samples Page 2
Groundwater Samples Page 2
Surfacewater Samples Page 3
Leachate Samples Page 3
Groundwater and Surfacewater Characterization Page 3
Findings Page 3
Closing Page 3
TABLES
Groundwater Monitoring Well Construction Table Table 1
Sampling and Analysis Summary Table 2
Detections in Water Samples above SWSL, GWP, 2L, 2B or MCL (Appendix I) Table 3
Detections in Leachate Samples above SWSL, GWP, 2L, 2B or MCL Table 4
Hydrogeologic Properties at Monitoring Well Locations Table 5
FIGURES
Topographic Map with Site Location Figure 1
Potentiometric Map of Uppermost Aquifer Figure 2
APPENDICIES
Laboratory and Field Analysis Reports and Chains of Custody Appendix A
May 31, 2016
Ms. Jaclynne Drummond
Solid Waste Section (SWS)
NC Department of Environmental Quality (NCDEQ)
2090 US Highway 70 Swannanoa, NC 28778
Re: Semi-Annual Water Quality Monitoring Report
Lenoir County Subtitle D Lined Landfill, Phase 1
Permit No. 54-09 MESCO Project No. G15029.0
Event Date(s): July 7-8, 2015

Dear Ms. Drummond:
Introduction
On behalf of Lenoir County, Municipal Engineering Services Company, P.A. (MESCO) is pleased to
present this Semi-Annual Water Quality Report for the summer 2015 event performed at the Lenoir
County Subtitle D Lined Municipal Solid Waste Landfill (MSWLF), Phase 1. NCDENR Solid Waste
Rules 15A NCAC 13B.1632 requires that Lenoir County provide this report to the SWS on a semi-annual
basis. This report documents the quality of the groundwater, surface waters and leachate during this
monitoring event performed on July 7-8, 2015. Laboratory analytical results indicate that constituents
continue to not be detected in excess of any applicable water quality Standard.
Background
The Lenoir County Subtitle D lined MSWLF, permit #54-09, is located at 2949 Hodges Farm Road,
LaGrange, North Carolina. The site location topographic map is depicted in the attached Figure 1. The
lined MSWLF is currently not accepting waste rather being transferred to another out of county MSWLF.
Water quality at this facility has been monitored at least semi-annually since prior to operation in 2003
with all historical analytical data available for trend comparison.
As specified within 15A NCAC 13B.1632(j), the SWS Environmental Monitoring Report Form and SWS
issued memorandums this report contains sampling procedures, field and laboratory results, groundwater
and surface water characterization. Well construction summary table, sampling and analysis summary
table, detections compared to Standards tables, hydrogeologic properties table, potentiometric map, field
parameters, laboratory analytical reports with quality assurance/quality control data and chains-of-custody
(C-O-C) are also included in this report.

Sampling Procedure
Environment 1 (E1) of Greenville, NC reportedly performed this sampling event utilizing portable monitoring
methodology in accordance with the approved Sampling & Analysis Plan (SAP) contained in the Lenoir County
Landfill, Phase 1 Design Hydrogeologic Study dated August 19, 2002. E1 reportedly collected water samples from
four downgradient groundwater monitoring wells (MW-14 through MW-17), two hydraulically upgradient
background wells (MW-13 and MW-18), and the the leachate lagoon (LAGOON). Quality control measures
instituted during this event included submittal and analysis of an equipment blank (EB), field blank (FB) and trip
blank (TB). Additional static water level readings were recorded from eleven supplementary piezometers (P-3A,
P1-4, P1-14, P-14, P-17, P-22, P2-4, P2-9, P2-10, MW-19S and MW-19D) to improve potentiometric map coverage.
The lone designated surface water sample point SW-3 was reported to be dry. Monitoring locations are shown in
Figure 2. A summary detailing the construction of the water monitoring wells is presented on Table 1.
Field Parameter Data
E1 reported the field parameters (pH, static water levels, specific conductance, temperature and turbidity)
in the laboratory analysis report (Appendix A).
Laboratory Results
Samples collected from monitoring wells contained in the SAP and blanks (EB,FB) were analyzed for the
VOC and total metal constituents listed in Appendix I of 40 CFR Part 258. The lined leachate lagoon
(LAGOON) samples were tested for the SWS required leachate specific parameters (Appendix I VOCs
and metals, nitrate, phosphorus, chemical oxygen demand, biological oxygen demand, pH, and sulfate).
A sampling and analysis table summarizing the locations, target parameters and laboratory methods is
presented as Table 2. E1 documentation indicates samples were transported under C-O-C protocols and
analyzed within the specified hold times for each method.
Water samples were analyzed to the laboratory-established Method Detection Limits (MDL), which are at or below
the current Solid Waste Section Limits (SWSL). Table 3 summarizes constituents detected in groundwater and
surface water samples that attain or were above the current SWSL, Groundwater Protection Standards (GWP), North
Carolina Groundwater Standards (2L), the applicable North Carolina Surface Water Standards (2B) for a Class C
water-body, and Maximum Contaminant Levels (MCL) also known as “Federal Primary Drinking Water
Standards”. Laboratory results and COC are presented in Appendix A.
Quality Control Samples
Six out of fifteen total metals were detected in low “j-qualified” concentrations in the blanks (EB and
FB). Although the field and/or laboratory induced artifact contamination was identified it is unlikely the
data set for the lined landfill has been influenced by false positives or high bias.
Groundwater Samples
Constituents continue to be absent in any groundwater sample in concentrations exceeding the 2L, GWP
or MCL Standards.
2
Figures
Topographic Map with Site Location
Lenoir County Landfill Facility
FIGURE 1
QUADRANGLE LEGEND
N
2949 Hodges Farm Rd (SR1524)
LaGrange, NC 28501
Lat:35-17-07.4269
Long:-77-42-32.7453
Northing:561295.59
Easting:2385220.32
SW-3
UNLINEDC&D
MSWLF
SUBTITLE DLINEDMSWLF
Tables
Lenoir County Subtitle D Lined MSWLF Page 1 of 1
Table 1
Groundwater Monitoring Well Construction Table
July 7-8, 2015
Latitude Longitude
(inches)(ft)
MW-13 9/3/03 2 29.4 14.40 15 Silty Sand 107.81 105.79 85.27 22.54 N35° 17' 23.50"W77° 42' 28.56"
MW-14 9/3/03 2 21 6 15 Silty Sand 74.81 72.80 62.63 12.18 N35° 17' 28.11"W77° 42' 10.92"
MW-15 8/22/01 2 15.13 5.13 10 Silty Sand 71.64 68.69 64.64 7.00 N35° 17' 24.53"W77° 42' 10.28"
MW-16 9/2/03 2 21 6 15 Silty Sand 76.36 73.95 69.16 7.20 N35° 17' 21.53"W77° 42' 11.35"
MW-17 9/3/03 2 28 13 15 Silty Sand 101.06 99.06 80.81 20.25 N35° 17' 13.30"W77° 42' 22.33"
MW-18 4/24/04 2 30.85 15.85 15 Silty Clayey Sand 106.74 103.74 85.27 21.47 N35° 17' 09.44"W77° 42' 27.07"
NOTE:
Monitoring
Well
Date
Installed
Well Diameter
Total Well
Depth
Top of Screen
Depth
Screen Length Geology of
Screened Interval
Top of Casing
Elevation
Ground Elevation Groundwater Elevation Depth to Water
(ft bgs)(ft bgs)(ft amsl)(ft amsl)(ft amsl)(ft btoc)
bgs = below ground surface
amsl= above mean sea level
btoc = below top of casing (PVC well casing)
Lenoir County Subtitle D Lined MSWLF Page 1 of 1
Table 2
Sampling and Analysis Summary
July 7-8, 2015
Field Parameter Leachate
Re
a
s
o
n

N
o
t

S
a
m
p
l
e
d
To
t
a
l

M
e
t
a
l
s

Me
r
c
u
r
y
,

T
o
t
a
l
St
a
t
i
c

D
e
p
t
h

t
o

W
a
t
e
r
Te
m
p
e
r
a
t
u
r
e
Co
n
d
u
c
t
i
v
i
t
y
pH Tu
r
b
i
d
i
t
y
Su
l
f
a
t
e
pH Ph
o
s
p
h
o
r
u
s
BO
D
,

5

d
a
y
CO
D
Ni
t
r
a
t
e
La
b

E
P
A

8
2
6
0
B
L
a
b

E
P
A
2
0
0
.
8
La
b

E
P
A

8
2
6
0
B
L
a
b

E
P
A
2
0
0
.
8
SM
2
5
5
0
B
SM
2
5
1
0
B
SM
4
5
0
0
H
B
SM
2
1
3
0
-
B
SM
4
2
6
C
La
b

S
M
4
5
0
0
H
B
La
b

E
P
A
3
6
5
.
4
La
b

S
M
5
2
1
0
B
La
b

H
A
C
H
8
0
0
0
La
b

E
P
A

3
5
3
.
2
MW-13 x x x x x x x
MW-14 x x x x x x x
MW-15 x x x x x x x
MW-16 x x x x x x x
MW-17 x x x x x x x
MW-18 x x x x x x x
SW-3 Dry
LAGOON x x x x x x x x x x x x
EB x x x
FB x x
TB x
P-22 E x
MW-19S E x
MW-19D E x
P1-4 E x
P1-14 E x
P-3A E x
P-17 E x
P2-1 E x
P2-4 E x
P2-9 E x
P2-10 E x
E = Exempt. Not listed on SAP water level readings only.
App. I App II
VO
C
s

VO
C
s

App I & II = Lists from current 40 CFR 258
Lenoir County Subtitle D Lined MSWLF Page 1 of 1
Table 3
Detections in Water Samples above SWSL, GWP, 2L, 2B or MCL (Appendix I)
July 7, 2015
Sample Date Result Unit
MW-15 Barium, Total 7/7/15 116 0.01 100 700 2000
A definitive source of the detection was not determined as part of this report. Preliminary cause only listed pursuant to instructions
BOLD = Concentration > 2L, 2B, GWP or MCL Standard
Sample
ID Parameter Name 1 MDL 2 SWSL 3 2L 4 2B 5 GWP 6 MCL 7 Preliminary
Cause 8
ug/l
1 Table contains constituents detected at or above SWSL, GWP, 2L, 2B or MCL
2 MDL = Method Detection Limit
3 SWSL = Solid Waste Section Reporting Limit
4 2L = North Carolina 15A NCAC 2L Groundwater Quality Standard
5 2B = North Carolina 15 NCAC 2B Surface Water Quality Standard for this Specific Stream Classification
6 GWP = Groundwater Protection Standard
7 MCL = Primary Drinking Water Standard (not currently applicable for regulatory comparisons)
8 Preliminary Cause = Refers to a preliminary analysis of the cause and/or source of a detection over the respective 2L/2B Standard.
Lenoir County Subtitle D Lined MSWLF Page 1 of 1
Table 4
July 7, 2015
(cm/sec)(%)(ft/yr)
MW-13 7.69E-05 23 0.012 4 N56E 22.54 85.27 Silty Sand
MW-14 3.38E-03 23 0.022 336 N67E 12.09 62.72 Silty Sand
MW-15 2.89E-03 23 0.016 203 N68E 7.00 64.64 Silty Sand
MW-16 9.72E-04 23 0.026 113 N73E 7.20 69.16 Silty Sand
MW-17 1.13E-03 23 0.014 72 N66E 20.25 80.81 Silty Sand
MW-18 1.25E-04 23 0.016 9 N79E 21.47 85.27 Silty Clayey Sand
Minimum 7.69E-05 23 0.01 4 -7.00 62.72 -
Average 1.43E-03 23 0.02 123 -15.09 74.65 -
Maximum 3.38E-03 23 0.03 336 -22.54 85.27 -
NOTE:1.Hydraulic conductivity (K) values based on slug test results, performed by MESCO in December 2005.
3.Static water levels recorded by Environment 1, Inc. on July 7, 2015.
Linear velocity rate (Q) is defined by modified Darcy's equation:
where
K = hydraulic conductivity
Hydrologic Properties at Monitoring Well Locations
Monitoring
Well
Hydraulic
Conductivity
Effective
Porosity Hydraulic
Gradient
(ft/ft)
Groundwater
Velocity Rate
Flow
Direction
Depth To
Water
Water Table
Elevation Screened
Interval Lithology(ft btoc)(ft amsl)
2. Effective Porosity (ne) values obtained from the MESCO Ph. 1 design hydrogeologic report completed in August 2002.
ne = effective porosity
dh = head difference
dl = horizontal distance
dl
dh
n
KQ
e
-=
Appendix A
Laboratory Analysis Report
Field Analysis Report
Chains of Custody