NC0032719_Report_20190731 (3)

Table S. Summary of Surface Water Sampling Analytical Results
Valhalla WTP Edenton, Chowan County
Well ID
Date Collected
Chloride
TDS
Total Iron
Total
Manganese
Dissolved
Iron
Dissolved
Manganese
Temperature
UQ
DO
(mg/L)
Specific
Conduc-
tivity
(MS/cm)
Conduc-
t/
(MS/cm)
pH
ORP
(mv)
Turbidity
(NTU)
5/26/2016
21
2,800
54
<100
38
26
6.16
235
240
5.37
152
1/25/2017
38
2,800
78
370
74
11.5
9.7
292
216
7.25
108
231
10/2/2017
21
14,000
500
<200
210
15.8
6.67
184
153
7.80
49.8
51.3
SWl
1/10/2018
39
140
900
67
570
57
5.6
10.52
24.3
153
6.41
192
9.14
7/11/2018
21
<17
610,000
2,100
300,000
1,100
NS
NS
NS
NS
NS
NS
NS
1/9/2019
29
160
3,200
53
2,000
61
12.7
12.47
223.5
171
6.86
59.7
19.3
7 1 2019
10
90
34,000
120
720
<10
33.3
5.61
126.2
146.5
6.99
111.9
34.8
5/26/2016
30
6,900
57
<100
<10
21.3
7.66
295
276
5.54
170
1/25/2017
28
410
34
<100
<10
11.5
8.3
305
226
7.12
921
12
10/2/2017
29
390
30
<100
<10
18.2
8.22
309
268
7.42
42.3
9.18
SW2
1/11/2018
35
190
3,800
58
240
21
8.3
9.47
339.8
232
6.67
92.1
10.6
7/12/2018
40
210
360
42
230
19
22.3
6.6
33.3
314.5
6.97
47.7
63.8
1/10/2019
31
160
420
44
310
38
8.9
15.26
281.3
192.4
6.87
9.9
11.9
7/2/2019
24
160
990
130
<100
<10
24.1
7.29
295.3
290.4
6.72
903
22.5
5/25/2016
510
8,900
120
<100
99
18.6
3.6
1869
1637
6.06
149
1/25/2017
560
9,600
290
<100
180
15.1
10.9
2249
1824
6.77
81
41
10/3/2017
840
30,000
160
1,000
150
20.1
4.89
2772
2520
6.72
45.7
85.2
SW3
1/11/2018
520
860
12,000
100
2,400
110
6.6
5.65
1577
1024
6.74
105.9
19.4
7/12/2018
440
950
7,400
89
900
78
22.2
4.61
1619
1528
7.06
-72
94
1/10/2019
540
1,000
8,100
110
4,000
110
13.8
4.73
1,920
1,508
6.64
59.2
14.9
7/2/2019
670
1,400
39,000
220
<100
44
23.5
4.04
2,802
2,727
6.68
81.6
581
5/26/2016
320
1,400
140
160
76
19.9
6.28
1054
952
5.70
189
1/24/2017
280
900
86
130
74
11.7
9.28
1209
902
7.50
69
7.1
10/3/2017
460
4,400
43475
<100
220
16.5
7.42
1669
1391
6.84
45
17.5
SW4
1/11/2018
380
710
1,300
89
520
91
6.1
8.46
1372
878
6.73
95.2
5.39
7/12/2018
290
670
850
90
220
41
24.1
6.01
1052
1035
7.12
-30
83
1/10/2019
230
490
630
72
400
72
7.9
10.2
959
645
7.14
47.6
9.08
7/2/2019
420
940
2,500
74
<100
<10
26.3
5.32
1,598
1,642
7.14
62.7
23.1
5/25/2016
540
5,100
230
100
20
25.4
6.63
1809
1923
5.36
153
1/24/2017
530
830
210
150
180
12.4
8.56
2126
1617
7.32
44
6.4
10/3/2017
610
3,500
690
<100
200
17.2
5.3
2062
1755
6.88
66.5
11.9
SWS
1/11/2018
250
490
7,800
130
3,600
120
4.2
5.3
8.22
5.32
6.47
33.3
9.91
7/12/2018
430
940
3,800
490
410
62
26
5.62
1404
1438
6.94
-17.2
41
1/10/2019
310
600
1,400
85
910
69
8.5
12.06
1,284
882
7.12
59.6
8.36
7/2/2019
310
710
1100
69
<100
<10
33
7.73
1,270
1,470
7.16
93.7
8.7
1/24/2017
450
6,200
340
<100
38
13.1
8.66
1948
1499
7.25
67
104
10/3/2017
810
1,300
430
<100
280
17.5
5.27
2573
2207
6.80
68.6
9.77
1/11/2018
590
1,100
1,000
220
660
170
8.6
9.44
2078
1423
7.00
54.7
19.3
SW6
7/12/2018
470
1,000
1,100
180
320
63
26
6.15
1550
1578
6.95
9.7
58
1/10/2019
380
1,000
720
96
500
92
9.1
10.68
1,870
1,304
6.96
80.7
6.6
7/2/2019
740
1600
1700
290
<100
130
29.2
3.37
2,782
3,002
6.87
75.7
36.4
5/26/2016
1,300
200
39
<100
11
26.3
12.78
4168
4240
5.31
164
1/24/2017
1,200
180
100
<100
15
11.5
11.06
4239
3148
6.67
110
1.7
10/2/2017
620
6,500
780
<100
<10
18.7
9.74
2071
1783
7.06
111
171
SW7
1/11/2018
400
840
2,600
360
940
95
0.9
8.38
16.03
871
7.53
26.7
47.3
7/12/2018
370
830
350
120
<100
12
27
9.46
1260
1312
7.86
172
83
1/9/2019
630
1,400
<100
48
<100
30
10.3
15.41
23.8
1,720
7.65
-4.1
4.58
712019
850
1800
510
510
<100
<10
29.7
7.22
2,867
3,138
8.43
86.1
7.87
5/2/2017
20
750
72
250
<10
24.3
3.58
210
207
6.84
123
10/3/2017
26
140
76
<100
<10
20.3
7.52
197.2
179
7.57
79.8
1/11/2018 A
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
SW8
7/12/2018
32
140
280
100
100
47
27.2
6.08
221.3
231
7.12
62.1
64.1
1/10/2019
34
160
370
23
260
25
NS
NS
NS
NS
NS
NS
NS
7/2/2019
61
250
930
150
<100
<10
28.9
5.65
339.5
364.5
7.63
92.9
37.5
5/2/2017
21
740
72
290
<10
23.9
3.14
250
244
6.95
112
10/3/2017
42
300
84
<100
<10
19.5
5.39
406
251
7.20
89.9
1/11/2018 A
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
SW9
7/12/2018
520
580
520
160
230
41
26.7
4.14
864
892
6.69
72.7
57.3
1/10/2019
53
180
340
13
230
14
NS
NS
NS
NS
NS
NS
NS
7/2/2019
110
360
1,200
1 340
<100
I <10
1 27
3.31
555
576
7.02
96.1
25.6
201715A NCAC 26 Std.
230 mg/L
1 500 mg/L
I NSE*
I NSE*
I NSE
I NSE
I NSE
I NSE
I NSE
I NSE
NSE
NSE
Micrograms per liter (ug/L), is equivalent to parts per billion (ppb). * standard removed after DWR/EPA 2015 review/study of natural levels of iron and manganese
Milligrams per liter (mg/L), is equivalent to parts per million (ppm). A = Surface water frozen, unable to collect sample
Bold = Concentration exceeds Laboratory Detection Limits NS - No sample collected
Shaded = Concentration exceeds the 15A NCAC 2L groundwater standard