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5400 Glenwood Avenue, Suite 400
Raleigh, North Carolina 27612
tel: 919 325-3500
fax: 919 781-5730
April 27, 2016
Ms. Jaclynne Drummond
North Carolina Department of
Environmental Quality
Division of Waste Management
Solid Waste Section
2090 U.S. 70 Highway
Swannanoa, North Carolina 28778
Subject: February 2016 Semi-Annual Groundwater Sampling Report
Closed East Lake Landfill, Dare County, North Carolina
Facility Permit No. 28-02
Dear Ms. Drummond:
CDM Smith Inc. (CDM Smith), on behalf of Dare County, is submitting an electronic copy of the
February 2016 semi-annual sampling event report. This letter report presents the results of the most
recent semi-annual sampling event that was completed at the Closed East Lake Landfill and
constitutes the first semi-annual sampling event for 2016. The groundwater monitoring network
consists of 10 wells (i.e. Well #1s, -1d, -2s, -2d, -3s, -3d, -4s, -4d, -5s, and -5d) and a downstream
surface water sample location. Additional samples were collected from Well #6s, -6d, and -7s during
the February 2016 sampling event to monitor the horizontal and vertical extent of benzene in
groundwater. Field activities and sampling results for all wells and the surface water sample are
discussed below.
Field Activities
Groundwater and surface water samples from the Closed East Lake Landfill were collected on
February 18, 2016, by Environment One, Inc. (Environment One). Monitoring wells and the surface
water sample location are shown on Figure 1. Well construction details for the monitoring wells are
summarized in Table 1.
Groundwater elevations were measured at each well prior to sampling using an electronic water level
indicator with an accuracy of 0.01 feet. These groundwater elevations as presented in Table 2 were
used to construct a potentiometric surface map for this sampling event. The potentiometric contours
are presented on Figure 1.
Each monitoring well was measured for pH, conductivity, temperature, turbidity, dissolved oxygen,
and oxidation-reduction potential (ORP) prior to sampling. The same water quality parameters were
Ms. Jaclynne Drummond
April 27, 2016
Page 2
measured at the surface water sample location with the exception of ORP. The water quality
parameters at the time samples were collected are presented in Table 3.
Sampling Results
Environment One located in Greenville, North Carolina, analyzed the groundwater and surface water
samples for North Carolina Appendix I volatile organic compounds (VOCs) by U.S. Environmental
Protection Agency (EPA) Method 8260B, metals by EPA Method 200.8, and chloride and sulfate by
Standard Method (SM) 4500. Additional samples were collected from the shallow monitoring wells
and analyzed for total suspended solids by SM 2540D. In accordance with Solid Waste Section
guidelines, the analytical results were reported to the laboratory specific method detection limit
(MDL) and are quantifiable at or below Solid Waste Section Limits (SWSLs). All monitoring wells and
the surface water location for the Closed East Lake Landfill had detections of analytes above the MDL
but below SWSLs. These detections were qualified with “J” flags, which indicate an estimated
concentration.
The following list presents the analytes detected above the MDL at each sample location. No “J” flag
detections are provided. Underlined analytes exceeded the 15A NCAC 02L .0202 (NC 2L) Groundwater
Quality Standard, Groundwater Protection Standard, or the 15A NCAC 02B Surface Water Quality
Standard for Class C Waters. A complete summary of all detected and estimated concentrations for
the February 2016 and previous sampling events is presented in Table 4. The historical data is not
continuous but data for select years is provided. The laboratory analytical data report is provided in
Appendix A.
Well #1s
Inorganics: Chloride, Sulfate
Metals: None Detected
Volatile Organic Compounds: None Detected
Well #1d
Inorganics: Chloride
Metals: Copper, Zinc
Volatile Organic Compounds: None Detected
Well #2s
Inorganics: Chloride
Metals: Arsenic, Barium, Zinc
Volatile Organic Compounds: Chlorobenzene, 1,4-Dichlorobenzene
Ms. Jaclynne Drummond
April 27, 2016
Page 3
Well #2d
Inorganics: Chloride
Metals: Chromium, Copper, Zinc
Volatile Organic Compounds: None Detected
Well #3s
Inorganics: Chloride
Metals: Barium, Zinc
Volatile Organic Compounds: None Detected
Well #3d
Inorganics: Chloride
Metals: Copper, Lead, Zinc
Volatile Organic Compounds: None Detected
Well #4s
Inorganics: Chloride
Metals: Barium, Zinc
Volatile Organic Compounds: None Detected
Well #4d
Inorganics: Chloride
Metals: Copper, Lead, Zinc
Volatile Organic Compounds: None Detected
Well #5s
Inorganics: Chloride
Metals: Arsenic, Barium, Copper, Zinc
Volatile Organic Compounds: None Detected
Well #5d
Inorganics: Chloride
Metals: Copper, Zinc
Volatile Organic Compounds: None Detected
Well #6s
Inorganics: Chloride
Metals: Arsenic, Barium
Volatile Organic Compounds: Benzene, Chlorobenzene, 1,4-Dichlorobenzene
Ms. Jaclynne Drummond
April 27, 2016
Page 4
Well #6d
Inorganics: Chloride
Metals: None Detected
Volatile Organic Compounds: None Detected
Well #7s
Inorganics: Chloride, Sulfate
Metals: Barium
Volatile Organic Compounds: None Detected
Downstream
Inorganics: Chloride
Metals: None Detected
Volatile Organic Compounds: None Detected
“J” flags were not included in the previous list, but several locations had “J” flag detections that
exceeded the standards. The “J” flag constituents above the standards along with their locations are
listed below.
Cobalt: Well #2s, -4s, and -5s
Vanadium: Well #1s, -1d, -2s, -2d, -3s, -3d, -4s, -4d, -5s, -5d, -6s, -6d, and -7s
No VOCs were detected in the trip blank. The equipment blank had estimated detections of antimony,
nickel, vanadium, and chloroethane below their respective NC 2L Standard. Acetone was also
detected in the equipment blank and is a common laboratory contaminant. A duplicate sample was
collected from Well# 6d and had analytes detected at concentrations similar to the parent sample.
VOCs detected in samples collected from Well #2s during the February 2016 sampling event were
below the NC 2L Standards. Benzene was detected slightly above the NC 2L Standard in Well #2s from
August 2007 (2.50 parts per billion (ppb)) to August 2013 (1.10 ppb). Benzene has not been detected
above the NC 2L Standard in Well #2s since the February 2014 sampling event. Carbon disulfide,
chlorobenzene, and 1,4-dichlorobenzene have also been detected in Well #2s with a majority of the
detections below the NC 2L Standards. VOC concentrations at Well #2s show a decreasing trend based
on the analytical data.
Benzene was detected slightly above the NC 2L Standard at 1.20 ppb in samples collected from Well
#6s during the February 2016 sampling event. Chlorobenzene and 1,4-dichlorobenzene were also
detected in Well #6s below their respective NC 2L Standard. These analytes have never been detected
above their respective NC 2L Standard. The historical VOC detections in Well #2s and Well #6s may
Ms. Jaclynne Drummond
April 27, 2016
Page 5
result from an offsite source based on the direction of groundwater flow across the landfill (See Figure
1). CDM Smith will monitor future analytical results to evaluate VOC trends.
The semi-annual groundwater monitoring program will be continued by Dare County. The second
semi-annual sampling event for 2016 is tentatively scheduled for August. If you have any questions or
require further explanation, please do not hesitate to call me at (919) 325-3500.
Very truly yours,
Mathew F. Colone, P.G.
CDM Smith Inc.
cc: Edward Mann, Dare County
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a
t
e
r
El
e
v
a
t
i
o
n
(f
e
e
t
A
M
S
L
)
Depth to Groundwater (feet btoc)Groundwater Elevation (feet AMSL)
28
-
0
2
W
e
l
l
#
1
s
7
.
0
7
6
.
5
4
0
.
5
3
6
.
2
4
0
.
8
3
6
.
0
1
1
.
0
6
6
.
0
4
1
.
0
3
6
.
40
0
.
6
7
28
-
0
2
W
e
l
l
#
1
d
7
.
1
5
6
.
4
0
0
.
7
5
6
.
3
6
0
.
7
9
6
.
2
1
0
.
9
4
6
.
2
4
0
.
9
1
6
.
39
0
.
7
6
28
-
0
2
W
e
l
l
#
2
s
5
.
8
0
5
.
0
5
0
.
7
5
5
.
3
5
0
.
4
5
4
.
6
3
1
.
1
7
5
.
0
2
0
.
7
8
4
.
74
1
.
0
6
28
-
0
2
W
e
l
l
#
2
d
5
.
4
9
4
.
6
6
0
.
8
3
4
.
6
7
0
.
8
2
4
.
6
2
0
.
8
7
4
.
7
0
0
.
7
9
4
.
66
0
.
8
3
28
-
0
2
W
e
l
l
#
3
s
4
.
2
8
3
.
7
6
0
.
5
2
3
.
8
8
0
.
4
0
3
.
8
1
0
.
4
7
3
.
5
5
0
.
7
3
4
.
32
-
0
.
0
4
28
-
0
2
W
e
l
l
#
3
d
3
.
8
5
3
.
1
8
0
.
6
7
3
.
2
5
0
.
6
0
3
.
0
0
0
.
8
5
3
.
0
4
0
.
8
1
3
.
11
0
.
7
4
28
-
0
2
W
e
l
l
#
4
s
4
.
2
0
5
.
2
5
-
1
.
0
5
5
.
0
4
-
0
.
8
4
3
.
0
0
1
.
2
0
5
.
1
5
-
0
.
9
5
5
.
0
4
-
0
.
8
4
28
-
0
2
W
e
l
l
#
4
d
4
.
2
2
3
.
5
5
0
.
6
7
3
.
5
5
0
.
6
7
3
.
3
7
0
.
8
5
3
.
4
2
0
.
8
0
3
.
54
0
.
6
8
28
-
0
2
W
e
l
l
#
5
s
9
.
8
8
8
.
7
3
1
.
1
5
8
.
7
5
1
.
1
3
8
.
7
2
1
.
1
6
9
.
0
2
0
.
8
6
8
.
86
1
.
0
2
28
-
0
2
W
e
l
l
#
5
d
1
0
.
3
3
9
.
6
0
0
.
7
3
9
.
6
3
0
.
7
0
9
.
4
1
0
.
9
2
9
.
6
8
0
.
6
5
9
.54
0
.
7
9
28
-
0
2
W
e
l
l
#
6
s
7
.
3
8
5
.
8
7
1
.
5
1
5.
7
5
1
.
6
3
5
.
9
0
1
.
4
8
5
.
7
0
1
.
6
8
28
-
0
2
W
e
l
l
#
6
d
6
.
8
8
6
.
5
1
0
.
3
7
6.
4
3
0
.
4
5
6
.
5
0
0
.
3
8
6
.
5
0
0
.
3
8
28
-
0
2
W
e
l
l
#
7
s
5
.
0
8
3
.
9
8
1
.
1
0
3
.
9
8
1
.
1
0
4
.
0
0
1
.
0
8
3
.
8
5
1
.
2
3
3
.
80
1
.
2
8
No
t
e
s
:
1.
A
M
S
L
-
A
b
o
v
e
M
e
a
n
S
e
a
L
e
v
e
l
2.
b
t
o
c
-
B
e
l
o
w
T
o
p
o
f
C
a
s
i
n
g
3.
V
e
r
t
i
c
a
l
C
o
n
t
r
o
l
-
N
o
r
t
h
A
m
e
r
i
c
a
n
V
e
r
t
i
c
a
l
D
a
t
u
m
o
f
1
9
8
8
4.
H
o
r
i
z
o
n
t
a
l
C
o
n
t
r
o
l
-
N
o
r
t
h
A
m
e
r
i
c
a
n
D
a
t
u
m
o
f
1
9
8
3
5.
W
e
l
l
#
6
s
a
n
d
#
6
d
w
e
r
e
i
n
a
c
c
e
s
s
i
b
l
e
d
u
r
i
n
g
t
h
e
A
u
gu
s
t
2
0
1
2
s
a
m
p
l
i
n
g
e
v
e
n
t
.
No
t
M
e
a
s
u
r
e
d
2/
1
4
/
2
0
1
2
8
/
1
6
/
2
0
1
2
No
t
M
e
a
s
u
r
e
d
2/26/2014
8/
2
0
/
2
0
1
3
2/
5
/
2
0
1
3
Pa
g
e
1
o
f
2
April 2016
Ta
b
l
e
2
Gr
o
u
n
d
w
a
t
e
r
E
l
e
v
a
t
i
o
n
s
Fe
b
r
u
a
r
y
2
0
1
6
S
e
m
i
-
A
n
n
u
a
l
S
a
m
p
l
i
n
g
E
v
e
n
t
Da
r
e
C
o
u
n
t
y
C
l
o
s
e
d
E
a
s
t
L
a
k
e
L
a
n
d
f
i
l
l
Da
t
e
M
e
a
s
u
r
e
d
Fa
c
i
l
i
t
y
P
e
r
m
i
t
Nu
m
b
e
r
Mo
n
i
t
o
r
i
n
g
W
e
l
l
Co
d
e
To
p
o
f
C
a
s
i
n
g
Ele
v
a
t
i
o
n
(f
e
e
t
A
M
S
L
)
28
-
0
2
W
e
l
l
#
1
s
7
.
0
7
28
-
0
2
W
e
l
l
#
1
d
7
.
1
5
28
-
0
2
W
e
l
l
#
2
s
5
.
8
0
28
-
0
2
W
e
l
l
#
2
d
5
.
4
9
28
-
0
2
W
e
l
l
#
3
s
4
.
2
8
28
-
0
2
W
e
l
l
#
3
d
3
.
8
5
28
-
0
2
W
e
l
l
#
4
s
4
.
2
0
28
-
0
2
W
e
l
l
#
4
d
4
.
2
2
28
-
0
2
W
e
l
l
#
5
s
9
.
8
8
28
-
0
2
W
e
l
l
#
5
d
1
0
.
3
3
28
-
0
2
W
e
l
l
#
6
s
7
.
3
8
28
-
0
2
W
e
l
l
#
6
d
6
.
8
8
28
-
0
2
W
e
l
l
#
7
s
5
.
0
8
De
p
t
h
t
o
Gr
o
u
n
d
w
a
t
e
r
(f
e
e
t
b
t
o
c
)
Gr
o
u
n
d
w
a
t
e
r
El
e
v
a
t
i
o
n
(f
e
e
t
A
M
S
L
)
De
p
t
h
t
o
Gr
o
u
n
d
w
a
t
e
r
(f
e
e
t
b
t
o
c
)
Gr
o
u
n
d
w
a
t
e
r
Ele
v
a
t
i
o
n
(f
e
e
t
A
M
S
L
)
De
p
t
h
t
o
Gr
o
u
n
d
w
a
t
e
r
(f
e
e
t
b
t
o
c
)
Gr
o
u
n
d
w
a
t
e
r
El
e
v
a
t
i
o
n
(f
e
e
t
A
M
S
L
)
De
p
t
h
t
o
Gr
o
u
n
d
w
a
t
e
r
(f
e
e
t
b
t
o
c
)
Groundwater Elevation (feet AMSL)
5.9
4
1
.
1
3
6
.
1
4
0
.
9
3
6
.
4
6
0
.
6
1
5
.
7
3
1
.
3
4
6.1
8
0
.
9
7
6
.
2
3
0
.
9
2
6
.
6
4
0
.
5
1
6
.
2
2
0
.
9
3
4.9
3
0
.
8
7
4
.
9
1
0
.
8
9
5
.
8
8
-
0
.
0
8
5
.
2
3
0
.
5
7
4.5
2
0
.
9
7
4
.
7
0
0
.
7
9
5
.
2
7
0
.
2
2
4
.
7
3
0
.
7
6
3.5
0
0
.
7
8
3
.
8
0
0
.
4
8
4
.
6
9
-
0
.
4
1
4
.
1
5
0
.
1
3
3.0
0
0
.
8
5
3
.
1
4
0
.
7
1
4
.
0
0
-
0
.
1
5
3
.
2
8
0
.
5
7
4.4
5
-
0
.
2
5
4
.
6
2
-
0
.
4
2
4
.
3
9
-
0
.
1
9
4
.
8
7
-
0
.
6
7
3.2
1
1
.
0
1
3
.
3
0
0
.
9
2
3
.
8
1
0
.
4
1
3
.
3
6
0
.
8
6
8.8
1
1
.
0
7
8
.
7
5
1
.
1
3
9
.
4
0
0
.
4
8
8
.
8
8
1
.
0
0
9.5
5
0
.
7
8
9
.
3
6
0
.
9
7
1
0
.
0
0
0
.
3
3
9
.
3
5
0
.
9
8
5.7
6
1
.
6
2
5
.
4
8
1
.
9
0
6
.
6
4
0
.
7
4
5
.
5
6
1
.
8
2
6.4
1
0
.
4
7
6
.
5
1
0
.
3
7
7
.
2
0
-
0
.
3
2
6
.
3
8
0
.
5
0
3.9
0
1
.
1
8
3
.
8
0
1
.
2
8
6
.
5
1
-
1
.
4
3
3
.
6
5
1
.
4
3
No
t
e
s
:
1.
A
M
S
L
-
A
b
o
v
e
M
e
a
n
S
e
a
L
e
v
e
l
2.
b
t
o
c
-
B
e
l
o
w
T
o
p
o
f
C
a
s
i
n
g
3.
V
e
r
t
i
c
a
l
C
o
n
t
r
o
l
-
N
o
r
t
h
A
m
e
r
i
c
a
n
V
e
r
t
i
c
a
l
D
a
t
u
m
o
f
1
9
8
8
4.
H
o
r
i
z
o
n
t
a
l
C
o
n
t
r
o
l
-
N
o
r
t
h
A
m
e
r
i
c
a
n
D
a
t
u
m
o
f
1
9
8
3
5.
W
e
l
l
#
6
s
a
n
d
#
6
d
w
e
r
e
i
n
a
c
c
e
s
s
i
b
l
e
d
u
r
i
n
g
t
h
e
A
u
gu
s
t
2
0
1
2
s
a
m
p
l
i
n
g
e
v
e
n
t
.
2/18/2016
8/
5
/
2
0
1
5
2/
1
9
/
2
0
1
5
8/
1
9
/
2
0
1
4
Pa
g
e
2
o
f
2
April 2016
Ta
b
l
e
3
Wa
t
e
r
Q
u
a
l
i
t
y
M
e
a
s
u
r
e
m
e
n
t
s
Fe
b
r
u
a
r
y
2
0
1
6
S
e
m
i
-
A
n
n
u
a
l
S
a
m
p
l
i
n
g
E
v
e
n
t
Da
r
e
C
o
u
n
t
y
C
l
o
s
e
d
E
a
s
t
L
a
k
e
L
a
n
d
f
i
l
l
Sa
m
p
l
e
D
a
t
e
:
Fa
c
i
l
i
t
y
P
e
r
m
i
t
Nu
m
b
e
r
Mo
n
i
t
o
r
i
n
g
W
e
l
l
C
o
d
e
pH
(S
.
U
.
)
Co
n
d
u
c
t
i
v
i
t
y
(u
S
/
c
m
)
Te
m
p
e
r
a
t
u
r
e
(d
e
g
r
e
e
s
Ce
l
s
i
u
s
)
TS
S
(m
g
/
L
)
pH
(S
.
U
.
)
Co
n
d
u
c
t
i
v
i
t
y
(u
S
/
c
m
)
Te
m
p
e
r
a
t
u
r
e
(d
e
g
r
e
e
s
Ce
l
s
i
u
s
)
TS
S
(m
g
/
L
)
pH
(S
.
U
.
)
Co
n
d
u
c
t
i
v
i
t
y
(u
S
/
c
m
)
Te
m
p
e
r
a
t
u
r
e
(degrees Celsius)TSS (mg/L)
28
-
0
2
W
e
l
l
#
1
s
6
.
7
1
,
3
8
1
1
9
3
8
6
.
8
1
,
5
3
5
1
7
8
5
6
.
7
1
,
2
5
9
1
9
5
0
28
-
0
2
W
e
l
l
#
1
d
7
.
1
9
5
7
1
9
N
A
7
.
1
1
,
0
0
5
1
8
N
A
7
.
1
9
1
7
1
8
N
A
28
-
0
2
W
e
l
l
#
2
s
6
.
4
1
,
3
0
0
2
2
5
1
6
.
5
1
,
7
0
0
1
8
1
3
4
6
.
4
1
,
3
0
6
2
1
5
5
28
-
0
2
W
e
l
l
#
2
d
6
.
7
1
,
4
0
7
2
1
N
A
7
.
2
1
,
8
6
9
1
9
N
A
6
.
8
1
,
3
8
3
2
0
N
A
28
-
0
2
W
e
l
l
#
3
s
6
.
1
3
,
0
5
8
2
4
1
1
6
.
5
2
,
1
1
0
1
5
4
0
6
.
4
1
,
5
0
3
2
0
3
1
28
-
0
2
W
e
l
l
#
3
d
6
.
9
9
2
6
2
0
N
A
7
.
2
1
,
0
0
4
1
7
N
A
7
.
0
9
9
5
1
8
N
A
28
-
0
2
W
e
l
l
#
4
s
6
.
8
1
,
1
2
5
2
2
1
4
1
6
.
9
1
,
3
5
5
1
5
3
2
8
6
.
8
1
,
1
3
1
2
0
1
3
7
28
-
0
2
W
e
l
l
#
4
d
6
.
9
8
5
7
2
0
N
A
7
.
1
1
,
0
0
0
1
8
N
A
6
.
9
8
8
1
1
9
N
A
28
-
0
2
W
e
l
l
#
5
s
6
.
4
1
,
5
2
4
2
1
5
8
6
.
4
1
,
9
8
8
1
8
1
3
5
6
.
4
1
,
5
2
6
2
0
6
8
28
-
0
2
W
e
l
l
#
5
d
7
.
1
7
6
6
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1
N
A
7
.
2
8
6
0
1
8
N
A
7
.
1
7
6
8
2
0
N
A
28
-
0
2
W
e
l
l
#
6
s
N
A
N
A
N
A
N
A
6
.
6
1
,
5
7
7
1
8
4
8
N
A
N
A
N
A
N
A
28
-
0
2
W
e
l
l
#
6
d
N
A
N
A
N
A
N
A
7
.
0
1
,
6
4
4
1
9
N
A
N
A
N
A
N
A
N
A
28
-
0
2
W
e
l
l
#
7
s
N
A
N
A
N
A
N
A
6
.
3
4
,
4
2
0
1
8
2
2
6
.
2
1
,
8
8
7
2
0
9
.
5
28
-
0
2
D
o
w
n
s
t
r
e
a
m
6
.
4
6
,
0
4
0
2
9
N
A
6
.
6
5
,
1
9
0
7
N
A
6
.
6
1
,
7
0
9
2
4
N
A
No
t
e
s
:
1.
m
g
/
L
-
m
i
l
l
i
g
r
a
m
s
p
e
r
l
i
t
e
r
2.
u
S
/
c
m
-
M
i
c
r
o
s
i
e
m
e
n
s
p
e
r
c
e
n
t
i
m
e
t
e
r
3.
T
S
S
-
T
o
t
a
l
S
u
s
p
e
n
d
e
d
S
o
l
i
d
s
4.
S
.
U
.
-
S
t
a
n
d
a
r
d
U
n
i
t
s
5.
N
A
-
N
o
t
A
n
a
l
y
z
e
d
6.
W
e
l
l
#
6
s
a
n
d
#
6
d
w
e
r
e
i
n
a
c
c
e
s
s
i
b
l
e
d
u
r
i
n
g
t
h
e
A
u
gu
s
t
2
0
1
2
s
a
m
p
l
i
n
g
e
v
e
n
t
.
Su
r
f
a
c
e
W
a
t
e
r
S
a
m
p
l
e
L
o
c
a
t
i
o
n
8/
1
6
/
2
0
1
2
8/
1
5
/
2
0
1
1
2/
1
4
/
2
0
1
2
Pa
g
e
1
o
f
5
April 2016
Ta
b
l
e
3
Wa
t
e
r
Q
u
a
l
i
t
y
M
e
a
s
u
r
e
m
e
n
t
s
Fe
b
r
u
a
r
y
2
0
1
6
S
e
m
i
-
A
n
n
u
a
l
S
a
m
p
l
i
n
g
E
v
e
n
t
Da
r
e
C
o
u
n
t
y
C
l
o
s
e
d
E
a
s
t
L
a
k
e
L
a
n
d
f
i
l
l
Sa
m
p
l
e
D
a
t
e
:
Fa
c
i
l
i
t
y
P
e
r
m
i
t
Nu
m
b
e
r
Mo
n
i
t
o
r
i
n
g
W
e
l
l
C
o
d
e
28
-
0
2
W
e
l
l
#
1
s
28
-
0
2
W
e
l
l
#
1
d
28
-
0
2
W
e
l
l
#
2
s
28
-
0
2
W
e
l
l
#
2
d
28
-
0
2
W
e
l
l
#
3
s
28
-
0
2
W
e
l
l
#
3
d
28
-
0
2
W
e
l
l
#
4
s
28
-
0
2
W
e
l
l
#
4
d
28
-
0
2
W
e
l
l
#
5
s
28
-
0
2
W
e
l
l
#
5
d
28
-
0
2
W
e
l
l
#
6
s
28
-
0
2
W
e
l
l
#
6
d
28
-
0
2
W
e
l
l
#
7
s
28
-
0
2
D
o
w
n
s
t
r
e
a
m
Su
r
f
a
c
e
W
a
t
e
r
S
a
m
p
l
e
L
o
c
a
t
i
o
n
pH
(S
.
U
.
)
Co
n
d
u
c
t
i
v
i
t
y
(u
S
/
c
m
)
Te
m
p
e
r
a
t
u
r
e
(d
e
g
r
e
e
s
Ce
l
s
i
u
s
)
TS
S
(m
g
/
L
)
pH
(S
.
U
.
)
Co
n
d
u
c
t
i
v
i
t
y
(u
S
/
c
m
)
Te
m
p
e
r
a
t
u
r
e
(d
e
g
r
e
e
s
Ce
l
s
i
u
s
)
Di
s
s
o
l
v
e
d
Ox
y
g
e
n
(m
g
/
l
)
OR
P
(m
V
)
Turbidity (NTUs)TSS (mg/L)
6.
9
1
,
3
8
2
1
5
<
1
6
.
6
1
,
6
9
3
1
9
0
.
6
0
-
1
0
8
.
2
4
2
6
3
7.
5
9
3
0
1
7
N
A
6
.
6
9
8
7
1
7
1
.
5
3
8
6
.
6
5
N
A
6.
6
1
,
4
1
5
1
6
2
7
6
.
6
1
,
8
6
1
2
1
0
.
4
7
-
8
6
.
5
4
8
8
3
6.
9
1
,
5
3
2
1
8
N
A
6
.
9
2
,
0
1
2
2
1
1
.
4
7
1
3
7
1
0
N
A
7.
6
9
9
5
1
6
1
8
6
.
7
1
,
9
6
6
2
2
1
.
8
5
-
4
9
.
9
8
9
6.
6
1
,
5
3
5
1
8
N
A
7
.
4
1
,
1
8
1
2
2
4
.
0
2
1
2
5
.
6
1
2
N
A
7.
0
1
,
2
7
8
1
4
7
2
6
.
5
1
,
4
1
4
2
0
0
.
3
9
-
6
1
.
3
1
0
6
1
1
0
7.
3
9
6
9
1
6
N
A
6
.
9
9
8
4
2
0
0
.
6
1
-
6
5
.
2
9
N
A
6.
5
1
,
5
9
8
1
7
5
1
6
.
6
1
,
5
2
5
2
1
0
.
6
0
-
3
6
.
5
5
4
7
6
7.
7
7
9
4
1
7
N
A
7
.
4
8
4
6
2
0
3
.
1
6
1
5
8
.
9
3
N
A
6.
8
1
,
3
9
5
1
6
4
6
7
.
2
1
,
6
5
4
2
0
0
.
4
5
-
9
7
.
2
0
3
4
7.
4
1
,
3
3
8
1
7
N
A
7
.
2
1
,
6
9
6
2
1
5
.
4
5
1
4
4
.
5
0
N
A
6.
5
2
,
7
0
0
1
7
9
.
3
6
.
5
1
,
8
6
7
2
1
1
.
0
1
5
4
6
2
.
9
6.
5
3
,
7
9
0
7
N
A
6
.
7
2
,
4
2
4
2
4
1
.
4
8
-
-
6
.
2
0
N
A
1.
m
g
/
L
-
m
i
l
l
i
g
r
a
m
s
p
e
r
l
i
t
e
r
7.
m
V
-
M
i
l
l
i
v
o
l
t
s
2.
u
S
/
c
m
-
M
i
c
r
o
s
i
e
m
e
n
s
p
e
r
c
e
n
t
i
m
e
t
e
r
8.
N
A
-
N
o
t
A
n
a
l
y
z
e
d
3.
T
S
S
-
T
o
t
a
l
S
u
s
p
e
n
d
e
d
S
o
l
i
d
s
4.
S
.
U
.
-
S
t
a
n
d
a
r
d
U
n
i
t
s
5.
O
R
P
-
O
x
i
d
a
t
i
o
n
-
R
e
d
u
c
t
i
o
n
P
o
t
e
n
t
i
a
l
6.
N
T
U
s
-
N
e
p
h
e
l
o
m
e
t
r
i
c
T
u
r
b
i
d
i
t
y
U
n
i
t
s
2/
5
/
2
0
1
3
No
t
e
s
:
8/
2
0
/
2
0
1
3
Pa
g
e
2
o
f
5
April 2016
Ta
b
l
e
3
Wa
t
e
r
Q
u
a
l
i
t
y
M
e
a
s
u
r
e
m
e
n
t
s
Fe
b
r
u
a
r
y
2
0
1
6
S
e
m
i
-
A
n
n
u
a
l
S
a
m
p
l
i
n
g
E
v
e
n
t
Da
r
e
C
o
u
n
t
y
C
l
o
s
e
d
E
a
s
t
L
a
k
e
L
a
n
d
f
i
l
l
Sa
m
p
l
e
D
a
t
e
:
Fa
c
i
l
i
t
y
P
e
r
m
i
t
Nu
m
b
e
r
Mo
n
i
t
o
r
i
n
g
W
e
l
l
C
o
d
e
28
-
0
2
W
e
l
l
#
1
s
28
-
0
2
W
e
l
l
#
1
d
28
-
0
2
W
e
l
l
#
2
s
28
-
0
2
W
e
l
l
#
2
d
28
-
0
2
W
e
l
l
#
3
s
28
-
0
2
W
e
l
l
#
3
d
28
-
0
2
W
e
l
l
#
4
s
28
-
0
2
W
e
l
l
#
4
d
28
-
0
2
W
e
l
l
#
5
s
28
-
0
2
W
e
l
l
#
5
d
28
-
0
2
W
e
l
l
#
6
s
28
-
0
2
W
e
l
l
#
6
d
28
-
0
2
W
e
l
l
#
7
s
28
-
0
2
D
o
w
n
s
t
r
e
a
m
Su
r
f
a
c
e
W
a
t
e
r
S
a
m
p
l
e
L
o
c
a
t
i
o
n
pH
(S
.
U
.
)
Co
n
d
u
c
t
i
v
i
t
y
(u
S
/
c
m
)
Te
m
p
e
r
a
t
u
r
e
(d
e
g
r
e
e
s
Ce
l
s
i
u
s
)
Di
s
s
o
l
v
e
d
Ox
y
g
e
n
(m
g
/
l
)
OR
P
(m
V
)
Tu
r
b
i
d
i
t
y
(N
T
U
s
)
TS
S
(m
g
/
L
)
pH
(S
.
U
.
)
Co
n
d
u
c
t
i
v
i
t
y
(u
S
/
c
m
)
Te
m
p
e
r
a
t
u
r
e
(d
e
g
r
e
e
s
Ce
l
s
i
u
s
)
Dis
s
o
l
v
e
d
Ox
y
g
e
n
(m
g
/
l
)
ORP (mV)Turbidity (NTUs)TSS (mg/L)
6.8
2
,
0
1
3
1
3
0
.
5
8
-
-
2
7
5
2
6
.
8
1
,
4
3
5
2
1
0
.
7
3
-
9
0
4
8
8
7
7.4
9
5
2
1
4
2
.
8
2
-
-
1
1
N
A
7
.
4
9
5
4
2
0
0
.
7
9
4
8
1
4
N
A
6.7
1
,
8
9
9
1
2
0
.
7
3
-
-
9
2
7
7
6
.
5
1
,
6
1
7
2
5
1
.
6
8
-
8
0
2
5
7
1
7.3
2
,
0
2
3
1
5
4
.
8
8
-
-
2
4
N
A
6
.
8
1
,
7
7
5
2
3
1
.
6
8
1
6
2
3
N
A
6.5
1
,
8
3
3
1
0
0
.
7
6
-
-
4
9
3
6
6
.
4
1
,
6
9
5
2
5
0
.
5
3
-
5
1
1
9
3
4
7.4
1
,
1
0
2
1
2
4
.
5
3
-
-
2
2
N
A
7
.
0
1
,
0
7
5
2
4
3
.
5
5
-
1
3
4
6
N
A
6.9
1
,
5
7
5
1
3
0
.
5
0
-
-
2
5
1
8
1
6
.
9
1
,
5
4
0
2
1
0
.
9
5
-
7
5
1
1
0
9
6
7.3
9
8
7
1
3
0
.
5
4
-
-
3
7
N
A
6
.
9
9
8
5
1
9
1
.
2
4
-
4
2
1
5
N
A
6.5
2
,
1
9
0
1
3
0
.
5
4
-
-
8
6
1
0
8
6
.
4
1
,
0
8
5
2
1
0
.
8
0
-
6
1
8
0
1
3
5
7.4
8
5
0
1
6
2
.
4
9
-
-
8
N
A
7
.
2
7
9
2
2
1
2
.
0
4
1
6
1
6
N
A
6.8
1
,
7
6
0
1
3
0
.
6
2
-
-
8
0
7
4
6
.
6
1
,
4
5
2
2
5
0
.
6
4
-
9
6
1
1
4
7
7.4
1
,
4
7
2
1
3
6
.
1
6
-
-
1
N
A
6
.
9
1
,
5
4
6
2
5
3
.
9
7
5
9
N
A
6.5
4
,
6
9
2
1
1
0
.
5
4
-
-
1
9
1
8
6
.
4
1
,
8
4
2
2
7
0
.
6
1
-
2
6
1
2
7
7.1
2
,
2
2
0
7
5
.
8
8
-
-
1
4
.
4
N
A
6
.
7
5
3
6
3
0
3
.
5
2
-
-
1
3
N
A
1.
m
g
/
L
-
m
i
l
l
i
g
r
a
m
s
p
e
r
l
i
t
e
r
7.
m
V
-
M
i
l
l
i
v
o
l
t
s
2.
u
S
/
c
m
-
M
i
c
r
o
s
i
e
m
e
n
s
p
e
r
c
e
n
t
i
m
e
t
e
r
8.
N
A
-
N
o
t
A
n
a
l
y
z
e
d
3.
T
S
S
-
T
o
t
a
l
S
u
s
p
e
n
d
e
d
S
o
l
i
d
s
9.
O
R
P
w
a
s
m
e
a
s
u
r
e
d
i
n
a
c
c
u
r
a
t
e
l
y
d
u
r
i
n
g
t
h
e
F
e
b
r
u
a
r
y 2
0
1
4
s
a
m
p
l
i
n
g
e
v
e
n
t
b
e
c
a
u
s
e
o
f
a
m
a
l
f
u
n
c
t
i
o
n
i
n
g
p
robe.
4.
S
.
U
.
-
S
t
a
n
d
a
r
d
U
n
i
t
s
5.
O
R
P
-
O
x
i
d
a
t
i
o
n
-
R
e
d
u
c
t
i
o
n
P
o
t
e
n
t
i
a
l
6.
N
T
U
s
-
N
e
p
h
e
l
o
m
e
t
r
i
c
T
u
r
b
i
d
i
t
y
U
n
i
t
s
2/
2
6
/
2
0
1
4
No
t
e
s
:
8/
1
9
/
2
0
1
4
Pa
g
e
3
o
f
5
April 2016
Ta
b
l
e
3
Wa
t
e
r
Q
u
a
l
i
t
y
M
e
a
s
u
r
e
m
e
n
t
s
Fe
b
r
u
a
r
y
2
0
1
6
S
e
m
i
-
A
n
n
u
a
l
S
a
m
p
l
i
n
g
E
v
e
n
t
Da
r
e
C
o
u
n
t
y
C
l
o
s
e
d
E
a
s
t
L
a
k
e
L
a
n
d
f
i
l
l
Sa
m
p
l
e
D
a
t
e
:
Fa
c
i
l
i
t
y
P
e
r
m
i
t
Nu
m
b
e
r
Mo
n
i
t
o
r
i
n
g
W
e
l
l
C
o
d
e
28
-
0
2
W
e
l
l
#
1
s
28
-
0
2
W
e
l
l
#
1
d
28
-
0
2
W
e
l
l
#
2
s
28
-
0
2
W
e
l
l
#
2
d
28
-
0
2
W
e
l
l
#
3
s
28
-
0
2
W
e
l
l
#
3
d
28
-
0
2
W
e
l
l
#
4
s
28
-
0
2
W
e
l
l
#
4
d
28
-
0
2
W
e
l
l
#
5
s
28
-
0
2
W
e
l
l
#
5
d
28
-
0
2
W
e
l
l
#
6
s
28
-
0
2
W
e
l
l
#
6
d
28
-
0
2
W
e
l
l
#
7
s
28
-
0
2
D
o
w
n
s
t
r
e
a
m
Su
r
f
a
c
e
W
a
t
e
r
S
a
m
p
l
e
L
o
c
a
t
i
o
n
pH
(S
.
U
.
)
Co
n
d
u
c
t
i
v
i
t
y
(u
S
/
c
m
)
Te
m
p
e
r
a
t
u
r
e
(d
e
g
r
e
e
s
Ce
l
s
i
u
s
)
Di
s
s
o
l
v
e
d
Ox
y
g
e
n
(m
g
/
l
)
OR
P
(m
V
)
Tu
r
b
i
d
i
t
y
(N
T
U
s
)
TS
S
(m
g
/
L
)
pH
(S
.
U
.
)
Co
n
d
u
c
t
i
v
i
t
y
(u
S
/
c
m
)
Te
m
p
e
r
a
t
u
r
e
(d
e
g
r
e
e
s
Ce
l
s
i
u
s
)
Di
s
s
o
l
v
e
d
Ox
y
g
e
n
(m
g
/
l
)
ORP (mV)Turbidity (NTUs)TSS (mg/L)
6.
9
1
,
9
0
8
4
0
.
6
1
5
3
4
1
1
9
4
6
.
8
1
,
2
8
4
2
2
4
.
6
0
-
1
0
7
5
.
1
3
6
8
7.
7
9
3
1
3
4
.
2
5
1
0
3
4
N
A
7
.
4
8
7
0
2
2
6
.
0
1
5
4
.
3
5
N
A
6.
9
1
,
6
0
0
6
0
.
7
4
2
9
4
2
7
9
6
.
4
1
,
2
0
3
2
7
4
.
3
0
-
7
2
3
6
.
5
9
4
7.
4
1
,
9
8
0
6
5
.
1
0
6
6
1
5
N
A
6
.
8
1
,
2
1
0
2
6
4
.
9
3
-
7
1
7
.
0
N
A
6.
7
2
,
7
0
0
3
0
.
6
7
4
5
4
1
7
0
6
.
5
9
7
4
2
9
3
.
6
3
-
4
7
1
4
.
0
1
3
7.
6
1
,
1
1
9
8
4
.
7
0
6
1
2
5
N
A
7
.
0
8
8
6
2
8
4
.
4
7
-
2
0
4
5
.
8
N
A
7.
7
1
,
6
7
6
6
0
.
7
3
1
3
3
2
3
8
1
4
8
7
.
0
1
,
3
4
1
2
4
6
.
4
4
-
7
3
7
1
.
4
7
7
7.
3
1
,
0
1
2
6
0
.
7
3
1
0
2
6
4
N
A
7
.
0
9
5
8
2
3
6
.
3
5
-
4
4
1
8
.
8
N
A
6.
7
2
,
7
3
0
9
0
.
4
4
3
5
7
1
1
2
7
6
.
5
1
,
4
0
5
2
3
6
.
5
4
-
7
0
3
5
.
3
9
2
7.
4
8
5
6
7
0
.
4
8
7
5
7
N
A
7
.
1
7
4
0
2
3
3
.
8
1
-
7
1
7
.
6
6
N
A
7.
0
1
,
5
1
2
5
0
.
5
0
4
1
2
6
0
6
.
7
9
7
8
2
9
4
.
6
7
-
1
0
7
1
.
9
8
4
3
7.
4
1
,
6
7
3
6
6
.
6
2
3
5
0
N
A
6
.
9
1
,
0
2
7
2
9
4
.
7
3
-
4
3
1
.
0
1
N
A
6.
9
5
,
0
1
0
7
0
.
9
8
7
5
4
0
1
7
6
.
5
1
,
7
6
0
2
9
4
.
9
9
-
1
0
1
.
3
0
1
2
7.
5
1
,
3
0
8
3
1
0
.
3
7
-
-
5
N
A
6
.
6
1
,
5
2
4
3
4
2
.
9
7
-
-
8
.
3
7
N
A
1.
m
g
/
L
-
m
i
l
l
i
g
r
a
m
s
p
e
r
l
i
t
e
r
7.
m
V
-
M
i
l
l
i
v
o
l
t
s
2.
u
S
/
c
m
-
M
i
c
r
o
s
i
e
m
e
n
s
p
e
r
c
e
n
t
i
m
e
t
e
r
8.
N
A
-
N
o
t
A
n
a
l
y
z
e
d
3.
T
S
S
-
T
o
t
a
l
S
u
s
p
e
n
d
e
d
S
o
l
i
d
s
4.
S
.
U
.
-
S
t
a
n
d
a
r
d
U
n
i
t
s
5.
O
R
P
-
O
x
i
d
a
t
i
o
n
-
R
e
d
u
c
t
i
o
n
P
o
t
e
n
t
i
a
l
6.
N
T
U
s
-
N
e
p
h
e
l
o
m
e
t
r
i
c
T
u
r
b
i
d
i
t
y
U
n
i
t
s
8/
5
/
2
0
1
5
2/
1
9
/
2
0
1
5
No
t
e
s
:
Pa
g
e
4
o
f
5
April 2016
Ta
b
l
e
3
Wa
t
e
r
Q
u
a
l
i
t
y
M
e
a
s
u
r
e
m
e
n
t
s
Fe
b
r
u
a
r
y
2
0
1
6
S
e
m
i
-
A
n
n
u
a
l
S
a
m
p
l
i
n
g
E
v
e
n
t
Da
r
e
C
o
u
n
t
y
C
l
o
s
e
d
E
a
s
t
L
a
k
e
L
a
n
d
f
i
l
l
Sa
m
p
l
e
D
a
t
e
:
Fa
c
i
l
i
t
y
P
e
r
m
i
t
Nu
m
b
e
r
Mo
n
i
t
o
r
i
n
g
W
e
l
l
C
o
d
e
28
-
0
2
W
e
l
l
#
1
s
28
-
0
2
W
e
l
l
#
1
d
28
-
0
2
W
e
l
l
#
2
s
28
-
0
2
W
e
l
l
#
2
d
28
-
0
2
W
e
l
l
#
3
s
28
-
0
2
W
e
l
l
#
3
d
28
-
0
2
W
e
l
l
#
4
s
28
-
0
2
W
e
l
l
#
4
d
28
-
0
2
W
e
l
l
#
5
s
28
-
0
2
W
e
l
l
#
5
d
28
-
0
2
W
e
l
l
#
6
s
28
-
0
2
W
e
l
l
#
6
d
28
-
0
2
W
e
l
l
#
7
s
28
-
0
2
D
o
w
n
s
t
r
e
a
m
Su
r
f
a
c
e
W
a
t
e
r
S
a
m
p
l
e
L
o
c
a
t
i
o
n
pH
(S
.
U
.
)
Co
n
d
u
c
t
i
v
i
t
y
(u
S
/
c
m
)
Te
m
p
e
r
a
t
u
r
e
(d
e
g
r
e
e
s
Ce
l
s
i
u
s
)
Di
s
s
o
l
v
e
d
Ox
y
g
e
n
(m
g
/
l
)
OR
P
(m
V
)
Tu
r
b
i
d
i
t
y
(N
T
U
s
)
TS
S
(m
g
/
L
)
6.
9
1
,
7
3
4
1
3
0
.
9
6
1
1
5
2
8
7.
8
9
2
3
1
3
6
.
1
2
-
1
1
9
N
A
6.
9
1
,
4
0
4
1
3
1
.
1
4
-
1
9
3
2
1
1
6
7.
3
1
,
6
4
5
1
3
4
.
8
4
3
7
1
2
N
A
6.
6
1
,
6
8
3
1
4
2
.
2
4
1
3
9
5
9
6
7.
6
1
,
0
3
8
1
0
5
.
3
4
-
4
9
2
5
N
A
7.
0
1
,
3
9
4
1
4
0
.
6
0
-
1
2
9
6
9
2
7.
3
9
6
3
1
4
0
.
8
2
-
1
9
1
3
N
A
6.
6
1
,
6
4
7
1
0
2
.
7
8
6
0
8
9
1
3
7
7.
4
8
5
6
1
4
1
.
6
2
9
9
6
N
A
6.
9
1
,
1
3
5
1
5
0
.
7
6
-
3
4
4
5
7
7.
3
1
,
3
2
0
1
4
4
.
0
5
1
6
7
N
A
6.
7
3
,
3
2
0
1
4
2
.
2
0
-
5
6
1
3
6.
9
9
3
2
8
6
.
6
8
-
-
2
N
A
1.
m
g
/
L
-
m
i
l
l
i
g
r
a
m
s
p
e
r
l
i
t
e
r
7.
m
V
-
M
i
l
l
i
v
o
l
t
s
2.
u
S
/
c
m
-
M
i
c
r
o
s
i
e
m
e
n
s
p
e
r
c
e
n
t
i
m
e
t
e
r
8.
N
A
-
N
o
t
A
n
a
l
y
z
e
d
3.
T
S
S
-
T
o
t
a
l
S
u
s
p
e
n
d
e
d
S
o
l
i
d
s
4.
S
.
U
.
-
S
t
a
n
d
a
r
d
U
n
i
t
s
5.
O
R
P
-
O
x
i
d
a
t
i
o
n
-
R
e
d
u
c
t
i
o
n
P
o
t
e
n
t
i
a
l
6.
N
T
U
s
-
N
e
p
h
e
l
o
m
e
t
r
i
c
T
u
r
b
i
d
i
t
y
U
n
i
t
s
2/
1
8
/
2
0
1
6
No
t
e
s
:
Pa
g
e
5
o
f
5
April 2016
Ta
b
l
e
4
a
De
t
e
c
t
e
d
G
r
o
u
n
d
w
a
t
e
r
C
o
n
s
t
i
t
u
e
n
t
s
-
M
e
t
a
l
s
,
V
o
l
a
t
i
l
e
O
r
g
a
n
i
c
C
o
m
p
o
u
n
d
s
,
a
n
d
G
e
n
e
r
a
l
C
h
e
m
i
s
t
r
y
Fe
b
r
u
a
r
y
2
0
1
6
S
e
m
i
-
A
n
n
u
a
l
S
a
m
p
l
i
n
g
E
v
e
n
t
Da
r
e
C
o
u
n
t
y
C
l
o
s
e
d
E
a
s
t
L
a
k
e
L
a
n
d
f
i
l
l
Fa
c
i
l
i
t
y
Pe
r
m
i
t
Nu
m
b
e
r
Mo
n
i
t
o
r
i
n
g
We
l
l
C
o
d
e
Sa
m
p
l
e
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