Belews Creek Background Groundwater Dataset Evaluation - December 2016

F)2
Technical Memorandum
Date: Monday, December 12, 2016
Project: Belews Creek Steam Station
To: Kim Witt and Melonie Martin
From: Jacob Ruffing
Subject: Additional Background Monitoring Well Determinations
The purpose of this memorandum is to provide justification for additional monitoring wells that
should be considered as background wells for the Belews Creek Steam Station (BCSS) ash
basin. Monitoring wells BG -1 D, BG -2S, BG -2D, BG-2BR, BG -3S, BG -3D, MW -3, MW -202S,
MW -202D, and MW-202BR were previously evaluated and will continue to be used for
evaluation of background groundwater quality, as documented in Appendix B of the CSS
Corrective Action Plan (CAP) Part 1, dated November 16, 2015. Well locations are shown on
Figure 1.
Based on the current review of groundwater flow direction, groundwater elevation as compared
to the nearest ash basin surface water or porewater elevation, historical analytical results, and
horizontal distance to the ash source area; no additional wells are proposed for use as
background groundwater monitoring wells.
Wells BC -23A, BC -28, and CW -10 were previously considered as background wells, but have
been removed from consideration based on evaluation of horizontal distance to the ash source
area and the geology at the location of the wells. Distances and elevations pertinent to the
evaluation are provided on Table 1. Additional details are provided for each monitoring well
cluster on the following pages of this memorandum.
Historical analytical data for previously evaluated background wells (CAP Part 1) listed above
are provided in Table 2. The background wells and analytical data are separated by
groundwater flow layer (shallow, deep and bedrock) and a valid sample count is provided for
each constituent. Samples with field measured turbidity greater than 10 nephelometric turbidity
units (NTU) and/or pH greater than 8.5 standard units (SU) are denoted with red -colored text
and were not included in the valid sample counts.
BC -23A. BC -28. and CW -10
Monitoring wells BC -23A, BC -28, and CW -10 were installed as background wells for the Flue
Gas Desulfurization and Craig Road landfills. The geology at BCSS changes near the northern
shore of Belews Lake (Figure 2). Wells BC -23A, BC -28, and CW -10 are installed more than

F)2
one mile southeast of the ash basin and in a different geologic environment than the ash basin.
These wells should not be used for background water quality near the ash basin.
2

NOTES: WELL LOCATION MAP DATE
1. WASTE BOUNDARY AND ASH STORAGE AREA BOUNDARIES ARE APPROXIMATE
2. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN SCALE(FEET) DUKE ENERGY CAROLINAS, LLC DECEMBER 2016
15A NCAC 02L.0107(a) 1,000 0 1,000 2,000
3. AERIAL IMAGERY IS A COMBINATION OF A WSP AERIAL SURVEY (2014) AND NC ONEMAP(2014) BELEWS CREEK STEAM STATION ASH BASIN FIGURE
4. HYDROGRAPHY WAS DIGITIZED FROM USGS 1:24,000 SCALE TOPOGRAPHICAL MAPS F)l1
5. AS-BUILT CAMA ASSESMENT AND NPDES SERIES WELLS HAVE BEEN PROVIDED BY WSP AND STOKES COUNTY, NORTH CAROLINA
DUKE ENERGY

"J
TS Tan, gray, to maroon shale, siltstone's
sandstone, and arkose of nonmarine }
origin _ f
Fine- to medium -grained laminated •t c
4 ^`1
quartz -feldspar gneiss, micaceous
quartzite, and quartz -muscovite , ,r
schist
be Fine-grained biotite-quartz-feldspar'
- gneiss and some interlayered augen
gneiss. Amphibolite layers occur
locally. f
Notes:
Station property line is shown only in vicinity of the
station. y� �-
Source: Geologic Map of the East Half of the _J
Winston-Salem Quadrangle, North Carolina and Virginia `
1975, G. H. Espenshade, D. W. Rankin, K. Wier Shaw,^
and R. B. Neuman, USGS.
SCALE(FEET) t
4,000 0 4,000 8,000 1,14
REGIONAL GEOLOGIC MAP
DUKE ENERGY CAROLINAS, LLC
BELEWS CREEK STEAM STATION
NPDES PERMIT #NC0024406
STOKES COUNTY, NORTH CAROLINA
I't
DATE
December 2016
FIGURE
2

Table 1. Monitoring Well Information
Ground
Elevation of
Elevation of
Closest Pore
Distance and Direction
Groundwater
Surface
Screened
Groundwat
Water
Well ID
from Active Ash Basin
Flow Direction
Elevation
Interval
er
Elevation to
(feet)
(feet)
(feet)
Well
feet
BC -23A
5,700 feet SE
NE
831
783.5-798.5
791
738
BC -28
5,700 feet SE
E and NW
774
737-747
751.42
747
CW -10
6,500 feet SE
NE
831
740-745
790
738

Table 2. Analytical Results
Notes:
Red text indicates samples that will not be used in determining proposed
provisional background threshold values (PPBTVs) due to pH > 8.5 or
turbidity >10 NTU.
0 - Bold highlighted concentration indicates exceedance of the 15A
NCAC 02L Standard or IMAC, Appendix 2, April 1, 2013.
pm = micron
Ng/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
Eh values were calculated by adding 200 mV to the field -measured ORP
value. Depending on the field meter used, Eh values calculated using this
formula can vary by +/- 5 mV.
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02L = North Carolina groundwater standards as specified in T15A NCAC 02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
PPBC = Proposed Provisional Background Concentrations
T = total
TDS = total dissolved solids
TOC = total organic carbon
*BG-2BR is scheduled for replacement due to potential grout contamination
FIELD PARAMETERS
WATER QUALITY PARAMETERS
SELECTED 40CFR257 APPENDIX III CONSTITUENTS
INORGANIC PARAMETERS (TOTALS)
RADIONUCLIDES
Constituent:
15A NCAC 02L, DHHS, IMAC:
Reporting Units:
pH
6.5-8.5
SU
Eh
NS
mV
Oxidation
Reduction
Potential
NS
mV
Dissolved
Oxygen
NS
mg/I
Specific
Conductance
NS
PS/cm
Turbidity
NS
NTU
Temperature
NS
Deg C
Alkalinity
NS
ug/1
Carbonate
Alkalinity
NS
ug/l
Bicarbonate
Alkalinity
NS
ug/I
Methane
NS
ug/I
Sulfide
NS
ug/1
Total
Organic
Carbon
NS
ug/I
Total
Suspended
Solids
NS
ug/1
Boron
700
ug/1
Calcium
NS
ug/I
Chloride
250000
ug/1
Strontium
NS
ug/I
Sulfate
250000
ug/1
Total
Dissolved
Solids
500000
ug/I
Aluminum
NS
ug/I
Antimony
1
ug/l
Arsenic
10
ug/I
Barium
700
ug/1
Beryllium
4
ug/I
Cadmium
2
ug/I
Chromium
10
ug/1
Chromium
(VI)
0.07
ug/I
Cobalt
1
ug/I
Copper
1000
ug/I
Iron
300
ug/1
Lead
15
ug/I
Magnesium
NS
ug/1
Manganese
50
ug/I
Mercury
1
ug/I
Molybdenum
NS
ug/I
Nickel
100
ug/1
Nitrogen,
NO2 plus
NO3
NS
ug/I
Potassium
NS
ug/l
Selenium
20
ug/I
Sodium
NS
ug/1
Thallium
0.2
ug/I
Vanadium
0.3
ug/I
Zinc
1000
ug/I
Radium-
226
NS
pCi/L
Radium-
228
NS
pCi/L
Uranium,
Natural
NS
ug/l
Uranium-
233
NS
ug/I
Uranium-
234
NS
ug/l
Uranium -
236
NS
ug/I
Well/Sample ID
lCollection Date
Shallow Flow Layer
BG -2S
7/9/2015
5.78
277.8
204.32
4.32
46.3
8.33
25.7
13400
< 5000 U
13400
1.8 J+
< 100 U
< 1000 U
95600
< 50 U
1920
2000
18
< 1000 U
57000
410
< 0.5 U
< 0.5 U
60
< 0.2 U
0.41
1.1 J+
0.19 J
0.46 J
650
< 0.1 U
1280
25
< 0.2 U
0.11 J
0.923+
420
< 5000 U
< 0.5 U
3510 J
< 0.1 U
0.313
7.33
BG -2S
9/29/2015
5.8
208
206.2
6.2
42.9
9.9
23.1
119003-
< 5000 U
11900
1.6 J+
< 100 U
< 1000 U
6100
< 50 U
1700
2500 J+
18
600 J
32000
200
0.33
< 0.5 U
61
< 0.2 U
0.0363
1.73+
1.4
0.131
0.58 J+
300
0.12
1180
10
< 0.2 U
0.123
0.63
410
< 5000 U
< 0.5 U
3440J
0.025 J
0.623
7.53
BG -2S
11/12/2015
5.75
203.8
204.82
4.82
48.1
9.54
17.4
15500
< 5000 U
15500
1.4 J+
< 100 U
< 1000 U
7000
< 50 U
3340
9400
31
8303
62000
1000
< 0.5 U
< 0.5 U
110
< 0.2 U
0.053
1.83+
1.33+
0.2 J
0.52 J
1600
0.24
2400
31
< 0.2 U
< 0.5 U
1.2
540 J+
< 5000 U
< 0.5 U
5060
0.016 J
0.873
13
BG -2S
12/16/2015
6
192.1
204.9
4.9
94.4
5.8
9.7
20300
< 5000 U
20300
1.3 J+
< 100 U
< 1000 U
< 2500 U
< 50 U
4920
10200
41
6701
87000
911
< 0.5 U
< 0.5 U
110
0.073
0.0353
5.4
1.3
< 0.5 U
0.45 J+
120
< 0.1 U
3150
6.1
< 0.2 U
0.22 J
2.7
580
< 5000 U
< 0.5 U
5760
< 0.1 U
0.473
23 J+
BG -2S
3/29/2016
5.9
194
206.1
6.1
117.8
7.1
17.9
22900
< 5000 U
22900
1.6 J+
< 100 UJ
< 1000 U
5100
< 50 U
8030
18800
48
950 J
90000
142
< 0.5 U
0.1
30.9
0.0633+
< 0.08 U
2.4
1
0.0851+
0.24 J
234
0.11
4230
5.1
< 0.2 U
0.173
1.5
670
< 5000 U
< 0.5 U
7030
< 0.1 U
1
10.6
0.204
0.335
< 0.5 U
BG -2S
5/11/2016
6
200.6
205.7
5.7
119.8
8.1
20.6
22200
< 5000 U
22200
< 10 U
< 0.1 U
5.2
< 50 U
8250
18.5
54.4
3.3
88
472
< 0.5 U
0.0581
33.7
0.044 J
< 0.08 U
4.6
2
0.12
0.94
383
0.11
3970
6.3
< 0.2 U
0.12 J
3.2
0.68
< 5000 U
< 0.5 U
7210
< 0.1 U
0.86
12.9
0.119
0.155
< 0.5 U
BG -2S
9/20/2016
5.9
191.8
205.4
5.4
109.1
7.6
17.6
22500
< 5000 U
1 22500
< 10 U
< 100 U
I < 1000 U
16900
< 50 U
7260
14700
45.8
5401
84000
481
< 0.5 U
0.0841
33.9
0.0293
< 0.08 U
4.3
1.1
0.12
2.1
768
0.11
3610
14.4
< 0.2 U
0.17 J
3.4
710
< 5000 U
< 0.5 U
6760
< 0.1 U
1
9.8 J
0.231
-0.115
< 0.5 U
7G -3S
7/18/2015
5.29
227.7
207.83
7.83
58
4.02
18.14
6800
< 5000 U
6800
0.85 J+
< 100 U
< 1000 U
8600
< 50 U
2080
2900
25
< 1000 U
57000
130
< 0.5 U
< 0.5 U
40
0.17 J
0.052 J
1.2 J+
0.53
< 1 U
<50 U
0.066 J
1310
29
< 0.2 U
< 0.5 U
0.94 J+
3100
< 5000 U
< 0.5 U
47701
0.0481+
< 1 U
6.9 J
BG -3S
9/30/2015
5.4
232.5
205.7
5.7
59
15.4
23.5
7500
< 5000 U
7500
1.31+
< 100 U
< 1000 U
372001+
< 50 U
2440
3200
39
< 1000 U
44000
4800
0.291
0.94
88
0.77
0.043 J
3.8
0.223
1.9
4.4
5500
4.2
1410
130
< 0.2 U
0.1 J
1.6
3100
< 5000 U
0.29 J
4830J
0.14
9.2
33
BG -3S
11/17/2015
5.34
244.9
203.89
3.89
52.5
2.42
16
6500
< 5000 U
6500
1.3 J+
< 100 U
< 1000 U
16000
< 50 U
1930
3800
24
< 1000 U
< 25000 U
60 J
< 0.5 U
< 0.5 U
36
0.2 J
< 0.08 U
0.72
0.28
0.351
< 1 U
81
0.11
1180
19
< 0.2 U
< 0.5 U
0.323
2600
< 5000 U
< 0.5 U
4890 J
0.034 J
0.383
8.13
BG -3S
12/16/2015
5.33
275.7
206.44
6.44
53.5
9.38
14.6
6700
< 5000 U
6700
23+
< 100 U
< 1000 U
7500
< 50 U
2060
3900
26
< 1000 U
61000
150
< 0.5 U
< 0.5 U
36
0.173
0.027 J
0.641+
0.25
0.24 J
0.46 J+
160
0.048 J
1210
16
< 0.2 U
< 0.5 U
0.44 J+
2500
< 5000 U
< 0.5 U
48703
0.03 J
0.693+
6.8 J+
BG -3S
3/30/2016
5.3
234.6
206.4
6.4
45.7
7.9
17
8700
< 5000 U
8700
1.7 J+
< 100 U
8200
3100
< 50 U
2110
1600
20.6
6401
< 25000 U
< 100 U
< 0.5 U
< 0.1 U
32.1
0.18
< 0.08 U
0.831+
0.26
0.34
0.27 J
51.9
< 0.1 U
1300
15.9
< 0.2 U
< 0.5 U
0.93
2000
< 5000 U
< 0.5 U
3300J
< 0.1 U
0.18 J
9.3 J
-0.096
0.356
< 0.5 U
BG -3S
5/12/2016
5.3
210.6
205.6
5.6
52
6.5
18.1
6800
< 5000 U
6800
< 10 U
< 0.1 U
4.1
< 50 U
2550
1.7
29
< 1 U
37
374
0.71
0.12
46.4
0.23
< 0.08 U
1.1
0.27
0.4
1.1
482
0.29
1410
24
< 0.2 U
< 0.5 U
0.56
3
< 5000 U
< 0.5 U
3920 J
0.027 J
0.88
9.5 J
0.226
0.326
<
BG -3S
9/22/2016
8000
< 5000 U
8000
< 10 U
< 100 U
< 1000 U
54000
< 50 U
2400
1900
31.4
5501
59000
118
< 0.5 U
< 0.1 U
45.2
0.28
< 0.08 U
1.5
0.21
0.21
2.5
158
< 0.1 U
1390
13.9
< 0.2 U
< 0.5 U
1.4
3800
< 5000 U
< 0.5 U
4230 J
0.0181
0.15 J
10.9
0.69
0.249
< 0.5 U
MW -2025
1/6/2011
5.6
35
8.44
14.24
<50U
350
35000
<1U
<1U
23
<1U
<5U
<5U
69
<1U
26
<0.05U
<5U
<1U
<0.2U
<5U
MW -2025
5/4/2011
5.55
32
6.78
14.84
<50U
120
30000
<1U
<1U
21
<1U
<5U
<5U
81
<1U
18
<0.05U
<5U
<1U
<0.2U
<5U
MW -2025
9/6/2011
5.26
36
2.96
16.79
< 50 U
1200
52000
< 1 U
< 1 U
24
< 1 U
< 5 U
< 5U
40
< 1 U
11
< 0.05 U
< 5 U
< 1 U
< 0.2 U
< 5 U
MW -2025
1/9/2012
5.61
341
208.37
8.37
37
2.25
14.36
< 50 U
2400
35000
< 1 U
< 1 U
24
< 1 U
< 5 U
< 5 U
31
< 1 U
9
< 0.05 U
< 5 U
< 1 U
< 0.2 U
< 5 U
MW -2025
5/9/2012
5.63
376
208.36
8.36
36
2.77
15.62
< 50 U
2300
49000
< 1 U
< 1 U
25
< 1 U
< 5 U
< 5U
113
< 1 U
9
< 0.05 U
< 5 U
< 1 U
< 0.2 U
< 5 U
MW -2025
9/5/2012
5.54
433
208.42
8.42
35
2.56
16.09
< 50 U
2000
49000
< 1 U
< 1 U
23
< 1 U
< 5 U
< 5 U
51
< 1 U
5
< 0.05 U
< 5 U
< 1 U
< 0.2 U
< 5 U
MW -2025
1/9/2013
5.73
410
208.46
8.46
36
2.6
14.7
14000
< 50 U
1190
1900
48000
< 1 U
< 1 U
24
< 1 U
< 5 U
< 5 U
64
< 1 U
573
< 5 U
< 0.05 U
< 5 U
721
< 1 U
5540
< 0.2 U
< 5 U
MW -2025
5/8/2013
5.58
420
208.56
8.56
34
3.76
15.38
15000
< 5000 U
< 50 U
1090
1200
46000
< 1 U
< 1 U
21
< 1 U
8
< 5 U
73
< 1 U
493
< 5 U
< 0.05 U
< 5 U
655
< 1 U
5310
< 0.2 U
< 5 U
MW -2025
9/9/2013
5.38
379
208.39
8.39
35
3.79
15.93
9400
< 50 U
1080
970
45000
< 1 U
< 1 U
22
< 1 U
< 5 U
< 5 U
53
< 1 U
496
< 5 U
< 0.05 U
< 5 U
651
< 1 U
5320
< 0.2 U
< 5 U
MW -2025
1/8/2014
5.29
499
208.33
8.33
35
3.47
14.02
10000
< 50 U
1060
1000
54000
< 1 U
< 1 U
22
< 1 U
< 5 U
< 5 U
72
< 1 U
517
< 5 U
< 0.05 U
< 5 U
657
< 1 U
5390
< 0.2 U
< 5 U
MW -2025
5/6/2014
5.52
434
208.5
8.5
35
2.1
15.38
8700
< 50 U
1090
940
42000
< 1 U
< 1 U
21
< 1 U
< 5 U
< 5 U
32
< 1 U
495
< 5 U
< 0.05 U
< 5 U
669
< 1 U
5360
< 0.2 U
< 5 U
MW -2025
9/9/2014
5.4
395
208.52
8.52
35
1.78
15.67
11000
< 50 U
1080
730
50000
< 1 U
< 1 U
22
< 1 U
< 5 U
< 5 U
25
< 1 U
506
< 5 U
< 0.05 U
< 5 U
647
< 1 U
5380
< 0.2 U
< 5 U
MW -2025
1/6/2015
5.48
428
208.67
8.67
34
2.06
14.86
12000
< 50 U
1090
680
35000
< 1 U
< 1 U
22
< 1 U
< 5 U
< 5 U
35
< 1 U
492
< 5 U
< 0.05 U
< 5 U
694
< 1 U
5570
< 0.2 U
< 5 U
MW -2025
5/5/2015
5.56
386
208.44
8.44
38
0.69
15.4
13200
< 5000 U
13200
< 5000 U
< 50 U
1080
580
37000
23
1.05
< 1 U
22
< 1 U
< 1 U
< 5 U
< 1 U
< 5U
22
< 1 U
518
< 5 U
< 0.05 U
< 1 U
< 5 U
628
< 1 U
5460
< 0.2 U
< 5 U
MW -2025
7/16/2015
5.45
185.9
208.23
8.23
39
6.48
17.83
14000
< 5000 U
14000
1.43+
< 100 U
< 1000 U
< 2500 U
< 50 U
1040
1200
9.1
< 1000 U
41000
951
0.44 J+
< 0.5 U
19
0.23
< 0.08 U
1.2 J+
< 0.5 U
0.9 J+
68
< 0.1 U
474
3.2 J
< 0.2 U
< 0.5 U
0.31+
461+
< 5000 U
< 0.5 U
5300
< 0.1 U
< 1 U
2.8 J
5.74
< 3 U
0.0983+
< 0.05 U < 0.05 U < 0.05 U
MW -2025
10/2/2015
5.8
71.1
206.7
6.7
37.8
3.6
15.7
13400
< 5000 U
13400
2.8 J+
< 100 U
< 1000 U
4500
< 50 U
1010
1700
7.9
6401
45000
140
< 0.5 U
< 0.5 U
20
0.25
< 0.08 U
1.3
0.28 J
1.8
370
0.57
523
13
< 0.2 U
< 0.5 U
0.391
40
< 5000 U
< 0.5 U
5810
< 0.1 U
0.713
2.5 J
MW -2025
12/16/2015
5.4
200.1
207.4
7.4
37.6
2.5
16.3
13700
< 5000 U
13700
1.4 J+
< 100 U
570J
8700
< 50 U
1060
1700
9.6
< 1000 U
55000
320
< 0.5 U
< 0.5 U
25
0.25
< 0.08 U
1.7 J+
0.54
0.391
0.633+
750
0.13 J+
497
26
< 0.2 U
0.1 J
0.56
< 20 U
< 5000 U
< 0.5 U
5610
< 0.1 U
0.673
3 J
MW -2025
3/29/2016
5.3
149.7
207.2
7.2
36.1
2.7
19
12600
< 5000 U
12600
1.83+
< 100 UJ
< 1000 U
3100
< 50 U
1060
1700
8.7
5701
33000
< 100 U
< 0.5 U
0.043 J
19.9
1 0.23 J+
< 0.08 U
0.741+
0.48
0.0753+
1 0.17 J
82.5
< 0.1 U
519
3.91
< 0.2 U
< 0.5 U
< 0.5 U
39
< 5000 U
< 0.5 U
5220
< 0.1 U
0.19 J
< 10 U
0.13
-0.206
1 < 0.5 U
MW -2025
5/9/2016
5.7
258.7
207.3
7.3
37.2
8.9
17.5
15800
< 5000 U
15800
< 10 U
< 0.1 U
6.4
< 50 U
1620
1.1
10.1
0.88 J
48
172
< 0.5 U
< 0.1 U
23.1
0.19
< 0.08 U
0.92
0.5
0.0631
< 0.5 U
226
< 0.1 U
533
4.43
< 0.2 U
< 0.5 U
< 0.5 U
0.053
< 5000 U
< 0.5 U
5640
< 0.1 U
0.16 J
< 10 U
0.291
0.207
< 0.5 U
MW -2025
9/21/2016
5.9
234.8
206
6
32.8
0.63
22.6
13500
< 5000 U
13500
< 10 U
< 100 U
< 1000 U
< 2500 U
< 50 U
1130
1300
9.8
660 J
45000
< 100 U
< 0.5 U
< 0.1 U
22.8
0.2
< 0.08 U
0.82
0.58
0.0271
0.81
84.8
< 0.1 U
516
< 5U
< 0.2 U
< 0.5 U
< 0.5 U
500
< 5000 U
< 0.5 U
5920
< 0.1 U
0.3
3 J
< 0.5 U
MW -3
4/24/2012
5.66
52
19.8
12.89
9470
< 0
3414
9770
127
48000
< 0
< 0
58.6
< 0
< 0
< 0
< 0
< 0
195
< 0
1111
11.5
< 0
< 0
2448
< 0
2876
< 0
3.76
MW -3
10/17/2012
5.71
48
6.15
14.56
<100
<50
<10
<100
<100
<10000
<1
<1
<5
<5
<1
<5
<1
<5
<10
<1
<5
<5
<0.05
<5
<100
<1
<50
<1
<5
MW -3
4/9/2013
5.5
51
8.07
14.48
8770
< 50
3230
9530
185
53000
< 1
< 1
50.9
< 5
< 1
< 5
< 1
< 5
59.9
< 1
1040
3.81
0.007
< 5
2260
< 1
2810
< 1
< 5
MW -3
10/29/2013
5.55
47
7
14.13
8290
< 50
3350
8190
173
63000
0.355
0.255
53.4
0.313
1 < 1
3.83
0.463
2.45
1280
0.622
1200
22.3
< 0.05
2.89
2380
1 0.321
2860
2.01
9.45
MW -3
4/16/2014
5.56
53
8.13
13.62
7190
< 50
3300
9810
150
51000
0.29
0.09
61.7
0.26
< 1
1.58
0.15
< 5
331
0.27
1120
7.42
0.02
1.2
2510
< 1
2970
0.75
4.01
MW -3
10/20/2014
5.54
57
19
14.25
6730
< 50
3880
10100
192
52000
0.479
0.246
57.1
0.267
< 1
2.08
0.18
< 5
436
0.256
1280
9.69
< 0.05
1.64
2450
< 1
3060
0.999
20.9
MW -3
4/15/2015
5.59
58
14.3
13.66
6740
4.33
3510
10300
211
47000
0.435
0.268
61
< 5
< 1
0.81
0.342
1.61
739
0.362
1290
13.9
< 0.05
0.74
2480
< 1
3030
1.58
< 5
MW -3
10/26/2015
5.88
57
16.6
14.06
9070
5.43
3770
9090
327
58000
1.12
0.401
58.3
< 5
< 1
1.34
0.397
< 5
991
0.449
1350
17.2
0.01
< 5
2400
< 1
2990
2.09
4.83
MW -3
12/16/2015
5.69
206.9
208.6
8.6
42.6
8.55
10.5
7600
< 5000 U
7600
2J+
< 100 U
6300
9400
< 50 U
3690
10300
39
< 1000 U
53000
150
< 0.5 U
< 0.5 U
58
0.17 J
< 0.08 U
1.2 J+
0.83
0.181
0.38 J
170
0.15
1180
5.3
< 0.2 U
0.11
0.73
< 20 U
< 5000 U
< 0.5 U
3040 J
0.023 J
0.623
5.1 J
MW -3
3/29/2016
4.8
308
207.6
7.6
56.1
8.1
15.1
48003
< 5000 U
4800 J
1.63+
< 100 U
< 1000 U
5800
< 50 U
2850
10700
27
< 1000 U
39000
61.6 J
< 0.5 U
1 0.0853
68.8
0.32 J+
0.058 J
0.841+
0.34
0.071+
0.32 J
86.1
0.12
1030
4.8 J
< 0.2 U
< 0.5 U
0.65
< 20 U
2880 J
< 0.5 U
3090 J
0.024 J
0.38
4.7 J+
-0.093
0.842
< 0.5 U
MW -3
4/25/2016
5.5
54
17.6
14.12
616058.5
2870
10100
146
46000
0.582
0.353
79.8
0.5
< 1
2.96
0.372
< 5
854
0.452
1080
16.4
< 0.05
< 5
2930
< 1
3130
1.93
5.23
MW -3
5/10/2016
5.5
260
207.2
7.2
55.4
10.6
15.5
6300
< 5000 U
6300
< 10 U
< 0.1 U
-
9.2
< 50 U
3230
10.4
30.5
0.77 J
45
159
< 0.5 U
0.14
69.9
0.24
< 0.08 U
1.1
0.44
0.12
< 0.5 U
189
0.12
1080
5.5
< 0.2 U
< 0.5 U
0.8
< 0.02 U
3010 J
< 0.5 U
3260 J
0.025 J
0.68
4.3 J
0
0.532
1 < 0.5 U
MW -3
9/22/2016
5.5
193.1
206.3
6.3
55.4
7.2
18.7
8400
< 5000 U
8400
< 10 U
< 100 U
< 1000 U
4300
< 50 U
3480
10000
37.9
5701
< 25000 Ul
140
< 0.5 U
0.082 J
55.8
0.22
< 0.08 U
11.3
1.2
0.21
0.16 J
209
< 0.1 U
1100
7
< 0.2 U
0.58
8.8
39
< 5000 U
< 0.5 U
2900 J
0.019 J
0.41
27.9
0.157
0.918
< 0.5 U
Valid Sample Count
39
39
39
33
22
22
21
21
18
23
39
33
25
21
39
39
22
39
39
39
26
39
39
17
26
39
39
39
33
39
39
22
39
21
33
39
33
35
25
39
10
10
11
1 1 1
Deep Flow Layer
BG -1D
7/14/2015
6.3
162.4
204.43
4.43
126.2
7.4
23.4
23800J-
< 5000 U
23800
24.3
< 100 U
6601
20900
< 50 U
5410
7800
49
10500
88000
140
1.5
0.463
4.11
< 0.2 U
0.2
2.7
0.9
1.8
100
0.26
2200
93
< 0.2 U
1.1
3.5
830
33001
< 0.5 U
11500
0.0243
0.753
7.7 J+
1.9
4.661+
0.0811
< 0.05 U < 0.05 U < 0.05 U
BG -1D
9/29/2015
5.8
150.8
205.04
5.04
84.6
2.1
22.4
12100
< 5000 U
12100
1.53+
< 100 U
< 1000 U
< 2500 U
293
3460
7200
33
5100
63000
< 100 U
0.21 J
< 0.5 U
3.1 J
< 0.2 U
0.06 J
0.22 J+
< 0.02 U
2
0.31+
38 J
0.05 J+
2040
73
< 0.2 U
0.44 J
4.1
1300
< 5000 U
< 0.5 U
6570
0.056 J
< 1 U
8.53
BG -1D
11/12/2015
5.73
87.6
203.98
3.98
80.3
1.33
16.9
12100
< 5000 U
12100
1.63+
< 100 UJ
< 1000 U
< 2500 U
< 50 U
3540
7100
32
4500
83000
573
< 0.5 U
0.12 J
4J
< 0.2 U
0.077 J
1.1 J+
0.096
1.8
0.23 J
100
0.11
2120
57
< 0.2 U
0.14 J
5.4
1300
< 5000 U
< 0.5 U
6940
0.059 J
< 1 U
22
BG -1D
12/16/2015
5.39
187.1
206.98
6.98
81.6
3.4
13.5
13100
< 5000 U
13100
1.73+
< 100 U
< 1000 U
< 2500 U
< 50 U
4080
7000
46
4700
74000
< 100 U
< 0.5 U
< 0.5 U
7.2
0.26
0.079 J
< 0.5 U
0.039
1.6
8.8
36 J
< 0.1 U
2210
55
< 0.2 U
1
4
1200
< 5000 U
< 0.5 U
6330
0.056 J
< 1 U
62
BG -1D
3/29/2016
5.9
215
205.3
5.3
77.7
1.4
17.4
11900
< 5000 U
11900
1.71+
< 100 UJ
< 1000 U
< 2500 U
< 50 U
3260
7500
29.3
2800
52000
< 100 U
< 0.5 U
0.0763
2.63
0.1 J+
0.096
1.6
< 0.03 U
1.7
0.39 J
50.2
< 0.1 U
2180
45.7
< 0.2 U
0.14 J
5.6
1400
3310 J
< 0.5 U
6040
0.021
0.094 J
48.8
0.0729
0.0425
< 0.5 U
BG -1D
5/11/2016
6.1
193.4
203.1
3.1
106.9
2.1
20.2
14700
< 5000 U
14700
< 10 U
< 0.1 U
< 2.6 U
< 50 U
3900
7
34.2
4.8
48
< 100 U
0.12 J
0.044 J
3.3 J
0.0853
0.0753
1.5
0.082
1.4
0.41 J
43.6 J
0.18
2190
47.6
< 0.2 U
0.133
4.6
1.3
5720
< 0.5 U
6950
< 0.1 U
< 0.3 U
30.1
0.54
0.364
< 0.5 U
BG -1D
9/20/2016
0
0.21
BG -2D
7/9/2015
6.52
181.7
202.96
2.96
156.1
9.25
26.5
47200
< 5000 U
47200
2.6 J+
< 100 U
< 1000 U
5900
< 50 U
11400
9700
40
3200
107000
783
0.25 J
0.2 J
7.8
< 0.2 U
0.059 J
2.6 J+
0.283
< 1 U
72
0.0971
5960
12
< 0.2 U
1.4
1.5 J+
650
< 5000 U
< 0.5 U
7540
< 0.1 U
1.4
5.8 J
BG -2D
9/29/2015
6.7
100.4
202.8
2.8
146.3
1.5
22.1
461003-
< 5000 U
46100
1.63+
< 100 U
< 1000 U
< 2500 U
< 50 U
11700
9000
36
4000
109000
< 100 U
0.49 J
< 0.5 U
6.8
< 0.2 U
0.039 J
1.1 J+
0.12
< 0.5 U
0.24 J+
273
< 0.1 UJ
5860
3.9 J
< 0.2 U
0.82
0.58
610
< 5000 U
0.213
6630
< 0.1 U
0.963
11
BG -2D
11/12/2015
6.49
149.5
202.59
2.59
145.9
4.06
17.6
49800
< 5000 U
49800
2.5 J+
< 100 U
< 1000 U
< 2500 U
< 50 U
12400
8700
34
4300
138000
< 100 U
0.19 J
< 0.5 U
10
< 0.2 U
0.027 J
1.8 J+
0.12
0.191
0.26 J
75
< 0.1 U
6220
5.5
< 0.2 U
0.93
2.3
610
< 5000 U
< 0.5 U
6560
< 0.1 U
13
6.9 J
BG -2D
12/16/2015
6.6
176.8
202.6
2.6
145.9
2.4
13.9
49000
< 5000 U
49000
23+
< 100 U
7800
< 2500 U
< 50 U
11700
9200
36
3200
120000
< 100 U
< 0.5 U
< 0.5 U
6.6
< 0.2 U
< 0.08 U
1 J+
0.15
< 0.5 U
< 1 U
28 J
< 0.1 U
6060
< 5U
< 0.2 U
0.67
0.77
610
< 5000 U
< 0.5 U
6380
< 0.1 U
1
6.5 J+
BG -2D
3/29/2016
6.4
124.4
202.3
2.3
144.8
1
14
46200
< 5000 U
46200
1.8 J+
< 100 UJ
< 1000 U
< 2500 U
< 50 U
13200
14800
34
2900
96000
< 100 U
0.14 J
0.11
6.6
< 0.1 U
< 0.08 U
1.5
0.15
0.0451+
0.21 J
<50 U
< 0.1 U
7030
< 5U
< 0.2 U
0.63
1.3
720
< 5000 U
< 0.5 U
6600
< 0.1 U
1.1
28.5
-0.071
0.163
0.067 J
BG -2D
5/11/2016
6.5
154.8
203.5
3.5
164
1.2
17.2
44200
< 5000 U
44200
< 10 U
< 0.1 U
< 2.6 U
< 50 U
13600
19.3
40.4
2.9
105
< 100 U
0.12 J
0.09 J
6.2
< 0.1 U
< 0.08 U
1.3
0.19
0.042 J
0.35 J
< 50 U
< 0.1 U
6920
2.6 J
< 0.2 U
0.45 J
1.4
0.78
< 5000 U
< 0.5 U
6880
< 0.1 U
0.94
15
0.133
0.366
<
BG -2D
9/20/2016
6.3
183.3
1 204.7
4.7
180.2
0.9
19.4
47400
< 5000 U
47400
< 10 U
< 100 U
< 1000 U
< 5000 U
< 50 U
13700
20300
41
1800
121000
< 100 U
0.281
0.11
6.5
0.0213
< 0.08 U
0.84
0.31
0.0441
0.28 J
< 50U
< 0.1 U
7040
2.61
< 0.2 U
0.53
1.1
860
< 5000 U
< 0.5 U
6930
0.0231
1.1
24.4
0.463
-0.0121
< 0.5 U
BG -3D
7/18/2015
6.19
104
206.82
6.82
87
93
20
24300
< 5000 U
24300
1.2 J+
< 100 U
< 1000 U
33100
< 50 U
6570
4600
70
920 J
173000
2200
0.16 J
0.43 J
51
0.33
< 0.08 U
0.771+
0.231
1.2 J+
1900
1.5
2490
70
< 0.2 U
0.78
1.1 J+
1900
< 5000 U
0.24 J
14400
< 0.1 U
0.94 J
8.1 J
BG -3D
9/30/2015
7
180.3
207
7
80.3
8.9
19.1
18500
< 5000 U
18500
1.1 J+
< 100 U
< 1000 U
8400 J+
< 50 U
4410
5100
50
610 J
56000
< 100 U
0.291
< 0.5 U
9.1
< 0.2 U
< 0.08 U
0.513+
0.047 J
< 0.5 U
0.5 J
44 J
0.143+
1770
5.4
< 0.2 U
0.123
0.23
2100
< 5000 U
< 0.5 U
6840
< 0.1 U
0.473
3.3 J
BG -3D
11/12/2015
6
184.6
205.56
5.56
75.6
7.35
16.9
17900
< 5000 U
17900
2.3 J+
< 100 U
< 1000 U
8400
< 50 U
4390
5000
49
550 J
48000
81J
< 0.5 U
< 0.5 U
10
< 0.2 U
< 0.08 U
0.251+
0.053
< 0.5 U
0.24 J
77
0.11
1770
6.6
< 0.2 U
< 0.5 U
0.19 J
2100
< 5000 U
< 0.5 U
7010
< 0.1 U
0.343
7.1 J
BG -3D
12/16/2015
5.88
198.2
205.58
5.58
78.3
4.48
13.2
17900
< 5000 U
17900
1.8 J+
< 100 U
< 1000 U
3400
< 50 U
4440
5300
53
< 1000 U
88000
< 100 U
< 0.5 U
0.111
9.4
< 0.2 U
< 0.08 U
< 0.5 U
0.091
< 0.5 U
0.38 J+
60
0.051 J
1850
4.8 J
< 0.2 U
< 0.5 U
0.33+
2400
< 5000 U
< 0.5 U
7100
< 0.1 U
0.73+
9.1 J+
BG -3D
3/30/2016
5.9
185.2
206.3
6.3
82.4
2.8
14.6
19600
< 5000 U
19600
1.6 J+
< 100 U
< 1000 U
< 2500 U
< 50 U
4700
5500
50.6
790 J
48000
< 100 U
0.24 J
0.13
9.3
0.0383
< 0.08 U
0.57 J+
0.042
0.0613
0.22 J
46.53
< 0.1 U
2050
3.2 J
< 0.2 U
< 0.5 U
0.473
2800
< 5000 U
< 0.5 U
7630
< 0.1 U
0.42
< 10 U
0.189
0.192
< 0.5 U
BG -3D
5/12/2016
6
166.9
205
5
79.3
1
16.4
17600
< 5000 U
17600
< 10 U
< 0.1 U
< 2.5 U
< 50 U
4720
5.3
49.2
< 1 U
65.3
< 100 U
0.35 J
0.0893
9.7
0.043 J
< 0.08 U
0.481
< 0.03 U
0.03 J
0.42 J
< 50 U
< 0.1 U
1930
3.1 J
< 0.2 U
< 0.5 U
< 0.5 U
2.4
< 5000 U
< 0.5 U
7490
< 0.1 U
0.47
6.1 J
0.073
0.048
<
BG -3D
9/22/2016
6.1
170.5
206
6
71.2
0.55
17.9
19600
< 5000 U
19600
< 10 U
< 100 U
< 1000 U
< 2600 U
< 50 U
3990
4700
48.9
710 J
< 25000 U
< 100 U
< 0.5 U
0.069 J
7
0.0191
< 0.08 U
0.54
0.056
< 0.1 U
0.44 J
31.2 J
< 0.1 U
1670
2.63
0.071
< 0.5 U
< 0.5 U
1900
< 5000 U
< 0.5 U
6560
< 0.1 U
0.38
< 10 U
0.564
0.101
< 0.5 U
7-202D
1/6/2011
6.3
111
513
14.46
< 0.05 U
8200
113000
< 1 U
< 0.001 U
78
< 1 U
15
8
7280
7.52
413
< 0.05 U
6
< 1 U
< 0.2 U
45
MW -202D
5/4/2011
6.15
84
14
14.66
< 0.05 U
5900
60000
< 1 U
< 0.001 U
8
< 1 U
< 5 U
< 5 U
223
< 1 U
62
< 0.05 U
< 5 U
< 1 U
< 0.2 U
< 5 U
MW -202D
9/6/2011
5.79
65
18.9
16.95
< 50 U
3500
97000
< 1 U
< 1 U
12
< 1 U
< 5 U
< 5 U
707
1.15
43
< 0.05 U
< 5 U
< 1 U
< 0.2 U
< 5 U
MW -202D
1/9/2012
6.11
325
207.51
7.51
65
5.75
14.34
< 50 U
3800
82000
< 1 U
< 1 U
11
< 1 U
< 5 U
< 5 U
850
1.11
37
< 0.05 U
-
< 5 U
< 1 U
< 0.2 U
< 5 U
MW -202D
5/9/2012
6.08
372
207.75
7.75
64
3.09
15.28
< 50 U
2700
78000
< 1 U
< 1 U
6
< 1 U
< 5 U
< 5 U
131
< 1 U
12
< 0.05 U
< 5 U
< 1 U
< 0.2 U
< 5 U
MW -202D
9/5/2012
5.94
439
207.89
7.89
62
12.6
16.16
< 50 U
2300
78000
< 1 U
< 1 U
7
< 1 U
< 5 U
< 5 U
260
< 1 U
14
< 0.051J
< 5 U
< 1 U
< 0.2 U
< 5 U
MW -202D
1/9/2013
6.12
408
208.05
8.05
63
5.71
14.52
26000
< 50 U
3450
2100
71000
< 1 U
< 1 U
6
< 1 U
< 5 U
< 5 U
114
< 1 U
1630
5
< 0.05 U
< 5 U
700
< 1 U
7470
< 0.2 U
< 5 U
MW -202D
5/8/2013
5.97
395
207.49
7.49
63
6.32
15.26
27000
< 5000 U
< 50 U
3320
2100
79000
< 1 U
< 1 U
5
< 1 U
< 5 U
< 5 U
76
< 1 U
1520
< 5 U
< 0.05 U
< 5 U
661
< 1 U
7110
< 0.2 U
< 5 U
MW -202D
9/9/2013
5.64
375
207.15
7.15
65
5.13
17.71
23000
< 50 U
3610
1900
70000
< 1 U
< 1 U
5
< 1 U
< 5 U
< 5 U
113
< 1 U
1670
< 5 U
< 0.05 U
< 5 U
706
< 1 U
7620
< 0.2 U
< 5 U
MW -202D
1/8/2014
5.67
498
206.87
6.87
63
11.7
13.46
24000
< 50 U
3620
1800
82000
< 1 U
< 1 U
7
< 1 U
< 5 U
< 5 U
350
< 1 U
1740
7
< 0.05 U
< 5 U
744
< 1 U
7810
< 0.2 U
< 5 U
MW -202D
5/6/2014
5.83
372
206.38
6.38
66
2.8
15.32
27000
< 50 U
3650
2100
67000
< 1 U
< 1 U
6
< 1 U
< 5 U
< 5 U
43
< 1 U
1650
< 5 U
< 0.05 U
< 5 U
889
< 1 U
7710
< 0.2 U
< 5 U
MW -202D
9/9/2014
5.69
346
205.41
5.41
69
2.05
16.29
26000
< 50 U
3830
1900
80000
< 1 U
< 1 U
9
< 1 U
< 5 U
< 5 U
64
< 1 U
1750
< 5 U
< 0.05 U
< 5 U
977
< 1 U
7880
< 0.2 U
6
MW -202D
1/6/2015
5.85
402
206.92
6.92
67
1.77
13.18
26000
< 50 U
3850
1900
64000
< 1 U
< 1 U
6
< 1 U
< 5 U
< 5 U
17
< 1 U
1750
< 5 U
< 0.05 U
< 5 U
782
< 1 U
7970
< 0.2 U
< 5 U
MW -202D
5/5/2015
5.74
369
206.79
6.79
74
1.08
15.25
27000
< 5000 U
27000
< 5000 U
< 50 U
3680
1800
72000
37
1.16
< 1 U
6
< 1 U
< 1 U
< 5 U
< 1 U
< 5U
35
< 1 U
1770
< 5 U
< 0.05 U
< 1 U
< 5 U
1010
< 1 U
8000
< 0.2 U
< 5 U
MW -202D
7/16/2015
6.03
159.3
206.68
6.68
78
9.81
19.41
28900
< 5000 U
28900
1.3 J+
< 100 U
10900
< 5600 U
< 50 U
3930
2000
37
1200
71000
65 J
0.943+
< 0.5 U
5.3
< 0.2 U
< 0.08 U
0.87 J+
< 0.5 U
0.59 J+
72
0.067 J
1800
2.9 J
< 0.2 U
0.31 J
1.1 J+
1603+
< 5000 U
< 0.5 U
7980
< 0.1 U
< 1 U
4.83
4.63
< 3 U
0.207 J+
< 0.05 U < 0.05 U < 0.05 U
MW -202D
10/2/2015
6.1
67.9
205.8
5.8
76.4
4.7
14.1
28800
< 5000 U
28800
1.9 J+
< 100 U
< 1000 U
< 2500 U
< 50 U
4090
2800
37
2000
95000
90 J
< 0.5 U
< 0.5 U
5.7
< 0.2 U
< 0.08 U
0.73
< 0.5 U
0.34 J
130
0.073
2000
4.6 J
< 0.2 U
0.46 J
4
170
<5000U
< 0.5 U
8410
< 0.1 U
0.423
2.6 J
MW -202D
12/16/2015
5.6
243.4
206.4
6.4
73.5
0.3
16.1
27800
< 5000 U
27800
1.1 J+
< 100 U
< 1000 U
5000
< 50 U
4080
2700
40
1600
85000
120
< 0.5 U
< 0.5 U
6.3
< 0.2 U
< 0.08 U
1.3 J+
0.28
< 0.5 U
0.37 J+
160
0.057 J+
1920
MW -202D
3/29/2016
5.7
171.5
205.8
5.8
72.6
2.1
20.1
28100
< 5000 U
28100
1.7 J+
< 100 U
< 1000 U
< 2500 U
< 50 U
4070
2700
35.3
1800
57000
< 100 U
< 0.5 U
0.0563
4.53
0.0493+7
< 0.08 U
0.43 J+
0.086
0.029 J+
0.14 J
25.4 J
< 0.1 U
2040
< 5 U
< 0.2 U
0.24 J
0.6
170
< 5000 U
< 0.5 U
7890
< 0.1 U
0.33
2.9 J
0
0.0882
< 0.5 U
MW -202D
5/10/2016
6
216.5
206.3
6.3
72.6
1
16.8
30200
< 5000 U
30200
< 10 U
< 0.1 U
< 5 U
< 50 U
4330
2.2
36.2
1.9
84
< 100 U
< 0.5 U
0.05 J
4.8 J
0.064 J
< 0.08 U
0.56
0.11
0.022 J
0.12 J
46.4 J
< 0.1 U
1990
< 5 U
< 0.2 U
0.21 J
0.56
0.15
< 5000 U
< 0.5 U
8470
< 0.1 U
0.37
< 10 U
0.127
0.513
< 0.5 U
MW -202D
9/21/2016
6.3
203.3
206.5
6.5
66.6
2.25
22.3
31400
< 5000 U
31400
< 10 U
< 100 U
< 1000 U
3700
< 50 U
4290
2400
42.3
1600
60000
217
< 0.5 U
0.085 J
6.9
0.053 J
< 0.08 U
1.4
0.14
0.093 J
1.8
249
0.16
2010
10.2
< 0.2 U
0.26 J
1.3
550
< 5000 U
< 0.5 U
8500
< 0.1 U
0.64
< 10 U
< 0.5 U
Valid Sample Count
34
34
34
32
26
26
25
25
21
27
34
32
25
25
34
34
26
34
34
34
26
34
34
21
26
34
34
34
32
34
34
26
34
25
32
34
32
34
25
34
12
12
13
2 2 2
Bedrock Flow Layer
BG-2BR
7/9/2015
9.04
159.9
201.04
1.04
235.1
8.54
27.4
64100
4600J
59600
1.61+
< 100 U
970 J
7200
< 50 U
26600
6600
130
23400
149000
150
0.6
1.9
7.7
< 0.2 U
0.14
3.61+
< 0.5 U
0.77 J
83
0.056 J
2550
2.71
< 0.2 U
8.8
1.7 J+
95
11100
1.1
9810
< 0.1 U
7.4
2.71
BG-2BR
9/29/2015
9.2
7.1
201.9
1.9
210.1
4.9
20.9
62400J-
20800
41600
1.71+
< 100 U
7901
< 2500 U
< 50 U
24800
5800
210
24500
171000
210
1.4
1.7
8.1
< 0.2 U
0.056 J
0.941+
0.7
< 0.5 U
0.95 J+
40 J
< 0.1 UJ
1660
< 5 U
< 0.2 U
8.6
0.443
190
12200
1.1
10700
0.054 J
9
3.1 J
BG-2BR
11/12/2015
9.43
-47.5
200.88
0.88
210.4
9.84
17.5
67200
11400
55800
31+
< 100 U
1000
< 2500 U
< 50 U
30000
4800
170
24300
121000
310
1.3
1.9
9.4
< 0.2 U
0.088
6.1
0.43+
0.2 J
1.3
550
0.17
1690
12
< 0.2 U
9.2
5.1
150 J+
12200
0.74
10400
< 0.1 U
7.8
13
BG-2BR
12/16/2015
9.7
16.4
203.81
3.81
201
10
12.9
66700
28000
38700
1.4 J+
< 100 U
1100
< 2500 U
< 50 U
24000
4700
240
21900
145000
240
1.5
1.7
13
0.46
0.036 J
1]+
0.6
< 0.5 U
26.7
120
< 0.1 U
1540
2.6 J
< 0.2 U
10.5
0.5
160
10700
0.72
10200
< 0.1 U
7.9
34
BG-2BR
3/29/2016
9.6
198.3
202.4
2.4
198.3
3.8
13.4
64600
12900
51700
2.11+
< 100 UJ
6001
< 5000 U
< 50 U
23400
4000
202
21100
121000
187
1.2
1.6
7.7
0.041+
< 0.08 U
1.8
1.2
0.0681+
8.9
52.2
0.12
1650
4.1 J
< 0.2 U
9.3
1.1
150
10200
0.86
9870
< 0.1 U
7.1
72.8
0.132
0.817
1.8
BG-2BR
5/10/2016
9.1
144.4
202.64
2.64
194
4.31
18.2
66300
13600
52700
< 10 U
< 0.1 U
< 2.7 U
28.9 J
24300
3.2
199
19.3
119
173
1.5
1.5
7.5
0.0411
< 0.08 U
2.3
0.51
0.0541
4.2
35.2 J
< 0.1 U
1640
< 5 U
< 0.2 U
8.1
1.2
0.13
10300
0.76
10100
< 0.1 U
6.4
25.7
0
0.525
1.5
BG-2BR
9/20/2016
10
74.5
202
2
191.1
4.6
19
69900
19300
50600
< 10 U
< 100 U
1000
< 2500 U
< 50 U
22200
2800
206
16100
133000
231
1
1.5
5.4
0.0313
< 0.08 U
1.9
0.98
0.0481
3.2
52.2
< 0.1 U
1410
2.91
< 0.2 U
8.4
0.73
160
9100
0.433
9360
0.024 J
7.6
23.7
0.0589
0.175
0.94
MW 202BR
7/16/2015
7.24
143.6
204.54
4.54
181.6
8.03
29.3
77600
< 5000 U
77600
1.2 J+
< 100 U
670J
2700
37 J
19100
2900
100
9600
133000
80 J
0.43 J
0.51
11
0.181
0.052 J
4.8
< 0.5 UJ
9.7
78
0.06JJ
3100
9.8
< 0.2 U
3.7
0.83
150
5150
0.44 J
12000
< 0.1 U
2.3
13
3.55
< 3 U
1.81
< 0.05 U < 0.05 U < 0.05 U
MW-202BR
10/2/2015
6.5
165.1
204.1
4.1
127.7
2.24
14.2
53100
< 5000 U
53100
1.6 J+
< 100 UJ
< 1000 U
< 2500 U
< 50 U
10300
3000
65
5300
87000
< 100 U
< 0.5 U
0.24 J
6.2
0.1 J
< 0.08 U
1.61+
< 0.5 U
6.5
51
0.05
3320
7.6
< 0.2 U
2.3
0.98
170
2700 J
< 0.5 U
10600
< 0.1 U
0.823
41J+
MW-202BR
11/12/2015
6.4
129.5
202.82
2.82
118.2
8.12
17.8
48100
< 5000 U
48100
1.9 J+
< 100 U
< 1000 U
3900
< 50 U
9520
2900
59
5400
89000
170
< 0.5 U
0.16J
5.9
< 0.2 U
< 0.08 U
7
0.22
0.33 J
6.7
450
0.09
3060
18
< 0.2 U
2
9.4
150 J+
2540 J
< 0.5 U
10100
< 0.1 U
0.713
22
MW-202BR
12/16/2015
6.3
89.5
204.6
4.6
106.8
7.9
15
42900
< 5000 U
42900
1.5 J+
< 100 U
720J
4000
< 50 U
8280
2800
52
3900
101000
91J
0.4J
0.26 J
4.4 J
< 0.2 U
0.033J
5.3
0.18
0.14 J
2.8J+
130
0.05
2660
7.4
< 0.2 U
1.5
3.2
130
< 5000 U
< 0.5 U
9940
< 0.1 U
0.593
16
MW-202BR
3/29/2016
6.4
175.9
204.4
4.4
95.7
6
18.3
32200
< 5000 U
32200
1.6 J+
< 100 U
10200
< 2500 U
< 50 U
6360
3000
37
4900
67000
< 100 U
0.18 J
0.28
< 5U
< 0.1 U
< 0.08 U
1.3
0.33
0.044J+
1.2
53.6
0.2310
4.3 J
< 0.2 U
1.2
0.68
120
< 5000 U
< 0.5 U
8860
< 0.1 U
0.56
52.1
0
0.0151
0.095 J
MW-202BR
5/10/2016
6.6
17
205.1
5.1
105.7
7.1
22.2
37400
< 5000 U
37400
< 10 U
< 0.1 U
< 2.5 U
< 50 U
7210
2.6
36.7
5
81
89.5J
0.2J
0.65
3.7 J
0.023J
< 0.08 U
54.7
< 0.03 U
0.76
4.6
356
< 0.
1870
19
< 0.2 U
2.1
31
0.06
4190J
< 0.5 U
10000
< 0.1 U
1.8
4J
-0.072
0.442
0.21 J
MW-202BR
9/21/2016
6.42
176.1
204.12
4.12
82.8
2
20.3
32700
< 5000 U
32700
< 10U
< 100 U
< 1000 U
< 2500 U
< 50 U
5470
2600
35.4
3700
74000
< 100 U
< 0.5 U
0.34
< 5U
< 0.1 U
< 0.08 U
0.89
0.12
0.036 J
0.13 J
27J
< 0.
1930
4.41
< 0.2 U
0.73
1 1
130
< 5000 U
< 0.5 U
9520
< 0.1 U
0.55
< 10 U
0.0783
Valid Sample Count
1 7
7
7
7
7
7
7
7
6
7
7
7
7
7
7
7
7
7
7
7
7
7
7
5
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
3
3
4
1 1 1
Notes:
Red text indicates samples that will not be used in determining proposed
provisional background threshold values (PPBTVs) due to pH > 8.5 or
turbidity >10 NTU.
0 - Bold highlighted concentration indicates exceedance of the 15A
NCAC 02L Standard or IMAC, Appendix 2, April 1, 2013.
pm = micron
Ng/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
Eh values were calculated by adding 200 mV to the field -measured ORP
value. Depending on the field meter used, Eh values calculated using this
formula can vary by +/- 5 mV.
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02L = North Carolina groundwater standards as specified in T15A NCAC 02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
PPBC = Proposed Provisional Background Concentrations
T = total
TDS = total dissolved solids
TOC = total organic carbon
*BG-2BR is scheduled for replacement due to potential grout contamination