NC0038377_Table 6-5 Well Construction Data_20150902

TABLE 6-5
WELL CONSTRUCTION DATA
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
IDENTIFICATION
DATE
INSTALLED
MONITORING
ZONE
MATERIAL
DIAMETER
(INCHES)
NORTHING
(FEET)
EASTING
(FEET)
MEASURING
POINT TOC
ELEVATION
(Feet- MSL)
GROUND
SURFACE
ELEVATION
(FEET- MSL)
DTW FROM
TOC'(FEET
BGS)
WATER LEVEL
ELEVATION
(FEET- MSL)
BORING
D(FEET3
(FEET
BGS)
SURFACE
CASING
DEPTHS
(FEET BGS)
TOTAL WELL
z3
DEPTH'
(FEET BGS)
MEASURED
WELL DEPTH i
(FEET TOC)
SCREENED
INTERVAL s
(FEET BGS)
TOP OF
SCREEN
ELEVATION
(FEET- MSL)
BOTTOM OF
SCREEN
ELEVATION
(FEET- MSL)
Ash Basin
ABMW-01
6/2/2015
Ash
PVC
2.00
1012988.38
2029253.96
483.81
481.11
5.88
477.93
13.30
NA
13.30
15.65
2.80
13.30
478.31
467.81
ABMW-02
5/31/2015
Ash
PVC
2.00
1012778.26
2030477.81
493.90
490.68
12.34
481.56
41.50
NA
39.20
NM
34.00
39.20
456.68
451.48
ABMW-02BR
6/3/2015
Bedrock
PVC
2.00
1012781.97
2030476.42
493.85
490.65
11.10
482.75
130.00
0-41.0
106.00
NM
94.00
104.00
396.65
386.65
ABMW-03
5/20/2015
Ash
PVC
2.00
1012714.21
2030856.72
500.17
497.34
17.15
483.02
40.50
NA
40.50
NM
35.30
40.50
462.04
456.84
ABMW-03S
5/27/2015
Saprolite
PVC
2.00
1012718.52
2030858.24
500.30
497.33
17.26
483.04
68.00
0-43.0
61.00
NM
50.00
60.00
447.33
437.33
ABMW-04
5/31/2015
Ash
PVC
2.00
1012345.36
2030478.85
491.44
488.76
6.33
485.11
60.00
NA
53.20
56.20
48.00
53.20
440.76
435.56
ABMW-04D
5/31/2015
Transition Zone
PVC
2.00
1012350.06
2030467.97
491.50
488.68
6.44
485.06
64.50
0-54.5
64.50
63.80
55.80
61.00
432.88
427.68
ABMW-04BR
6/4/2015
Bedrock
PVC
2.00
1012348.07
2030473.02
491.61
488.62
8.19
483.42
108.50
0-60.0
108.50
RM
98.70
108.20
389.92
380.42
GAP Wells
MW-03BR
2/10/2015
Bedrock
PVC
2.00
1015654.79
2031277.75
438.24
435.53
16.41
421.83
77.00
NA
75.10
76.35
68.77
74.00
366.76
361.53
MW-05BR
1/30/2015
Bedrock
PVC
2.00
1015146.30
2029179.66
511.40
508.74
9.46
501.94
67.00
NA
65.00
RM
58.00
63.00
450.74
445.74
MW-06BR (piezometer)
4/13/2015
Bedrock
PVC
2.00
1014756.09
2033040.31
463.99
461.70
56.84*
407.146*
100.00
NA
100.00
RM
90.00
100.00
371.70
361.70
MW-07D
4/25/2015
Transition Zone
PVC
2.00
1014307.45
2034169.17
453.94
451.17
9.48
444.46
32.50
NA
32.50
32.70
19.50
30.40
431.67
420.67
MW-07BR
4/24/2015
Bedrock
PVC
2.00
1014311.86
2034175.46
453.50
451.21
7.56
445.94
77.50
NA
77.50
79.60
66.80
77.50
384.46
373.71
MW-08S (piezometer)
2/16/2015
Saprolite
PVC
2.00
1014446.92
2034603.67
466.87
466.94
29.85
437.02
30.08
NA
30.08
30.20
25.10
30.10
441.90
436.90
MW-08D (piezometer)
2/16/2015
Transition Zone
PVC
2.00
1014443.85
2034599.43
466.89
467.04
33.36
433.53
41.00
NA
41.00
38.30
33.30
38.50
433.77
428.54
MW-08BR
2/14/2015
Bedrock
PVC
2.00
1014440.25
2034593.99
466.99
467.27
34.45
432.54
86.50
0-46.5
67.67
RM
61.80
67.00
405.47
400.27
MW-09BR
4/11/2015
Bedrock
PVC
2.00
1013360.32
2033864.48
495.39
492.85
24.97
470.42
66.00
NA
61.00
NM
48.00
58.00
444.85
434.85
MW-10BR
2/25/2015
Bedrock
PVC
2.00
1011436.41
2032770.90
513.39
513.47
13.82
499.57
65.50
NA
65.50
57.60
48.00
58.00
465.47
455.47
MW-11BR
4/24/2015
Bedrock
PVC
2.00
1010083.75
2027499.40
527.36
524.34
39.31
488.05
95.00
NA
95.00
NM
84.30
94.40
440.09
429.90
MW-12S
4/29/2015
Saprolite
PVC
2.00
1008653.91
2029202.47
587.38
587.48
30.78
556.60
56.00
NA
51.00
RM
39.50
49.50
547.98
537.98
MW-12D
4/28/2015
Transition Zone
PVC
2.00
1008654.13
2029191.43
588.02
588.17
31.12
556.90
97.00
NA
97.00
RM
87.00
97.00
501.17
491.17
MW-13BR
4/15/2015
Bedrock
PVC
2.00
1013587.37
2027633.00
528.83
526.67
33.36
495.47
107.00
NA
100.00
100.71
88.80
99.00
437.87
427.97
MW-14BR
2/5/2015
Bedrock
PVC
2.00
1015432.97
2028964.70
520.75
517.76
16.14
504.61
46.40
NA
35.40
36.87
29.00
34.00
488.76
483.76
MW-15BR (piezometer)
5/12/2015
Bedrock
PVC
2.00
1016021.83
2031813.20
460.92
460.94
58.24
402.68
78.50
NA
64.00
62.64
52.60
62.50
407.94
397.94
MW-16S
5/8/2015
Alluvium
PVC
2.00
1015654.53
2032640.89
371.11
367.94
4.19
366.92
8.50
NA
8.50
10.59
5.00
7.60
363.04
360.34
MW-16D
5/8/2015
Transition Zone
PVC
2.00
1015659.09
2032643.26
371.21
367.74
5.69
365.52
39.00
NA
39.00
41.44
28.70
38.90
339.07
328.81
MW-16BR
5/8/2015
Bedrock
PVC
2.00
1015664.50
2032645.73
371.30
367.83
5.89
365.41
65.00
0-47.2
1 59.50
1 62.26
1 48.70
59.00
1 319.13
308.87
Previously Installed Wells
BG-1
10/15/2008
Bedrock
PVC
2.00
2028480.40
1012000.52
540.11
537.04
29.85
510.26
NA
52.00
55.20
42.00
52.00
495.04
485.04
BG-2
9/28/2010
Transition Zone
PVC
2.00
2028799.48
1010809.99
542.66
539.84
31.50
511.16
53.00
NA
53.00
48.40
25.40
44.90
514.44
494.94
CW-1
11/9/2010
Transition Zone
PVC
2.00
2032714.46
1012696.54
489.88
486.96
17.68
472.20
25.50
NA
25.50
28.82
15.50
25.00
471.46
461.96
CW-1D
11/8/2010
Bedrock
PVC
2.00
2032715.65
1012703.55
490.96
488.31
19.03
471.93
40.40
NA
40.40
43.65
30.10
39.90
458.21
448.41
CW-2
11/11/2010
Transition Zone
PVC
2.00
2032238.71
1015043.98
389.00
386.56
13.71
375.29
18.00
NA
18.00
20.47
7.70
17.80
378.86
368.81
CW-2D
11/11/2010
Bedrock
PVC
2.00
2032245.02
1015046.88
389.53
386.93
14.24
375.29
55.90
NA
55.90
58.55
45.60
55.40
341.33
331.53
CW-3
11/16/2010
Transition Zone
PVC
2.00
2031278.02
1015647.59
437.68
435.27
15.80
421.88
32.30
NA
32.30
34.76
17.00
31.80
418.27
403.47
CW-4
11/12/2010
Bedrock
PVC
2.00
2030436.27
1015911.44
451.31
448.76
23.61
427.70
40.30
NA
39.98
42.81
35.00
39.80
413.76
408.96
CW-5
11/15/2010
Bedrock
PVC
2.00
2029182.29
1015162.23
509.60
507.21
8.07
501.53
43.00
NA
43.00
44.03
36.30
41.10
470.91
466.11
CW-6
11/11/2010
Bedrock
PVC
2.00
2033046.08
1014743.82
462.83
RS
12.02
450.81
77.40
NA
77.40
80.56
72.10
76.90
363.17
358.37
MW-2
10/14/2008
Bedrock
PVC
2.00
1015359.31
2030912.32
461.23
459.18
26.12
435.11
48.00
NA
48.00
50.12
38.00
48.00
421.18
411.18
MW-3
10/14/2008
Alluvium
PVC
2.00
1014955.04
2032010.00
384.00
RS
6.68
377.32
18.00
NA
18.00
19.93
8.00
18.00
374.00**
364.00**
MW-4
10/15/2008
Bedrock
PVC
2.00
1013846.48
2032346.28
522.77
519.46
26.16
496.61
55.00
NA
55.00
59.05
35.00
55.00
484.46
464.46
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\1.11 CSA Reporting\Tables\Report Tables\Table 6-5 Well Construction Data.xlsx Page 1 of 2

TABLE 6-5
WELL CONSTRUCTION DATA
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, ROXBORO, NC
IDENTIFICATION
DATE
INSTALLED
MONITORING
ZONE
MATERIAL
DIAMETER
(INCHES)
NORTHING
(FEET)
EASTING
(FEET)
MEASURING
POINT TOC
ELEVATION
(Feet- MSL)
GROUND
SURFACE
ELEVATION
(FEET- MSL)
DTW FROM
TOC' FEET
(
BGS)
WATER LEVEL
ELEVATION
(FEET- MSL)
BORING
D(FEET3
(FEET
BGS)
SURFACE
CASING
DEPTHS
(FEET BGS)
TOTAL WELL
zs
DEPTH'
(FEET BGS)
MEASURED
WELL DEPTH i
(FEET TOC)
SCREENED
INTERVAL s
(FEET BGS)
TOP OF
SCREEN
ELEVATION
(FEET- MSL)
BOTTOM OF
SCREEN
ELEVATION
(FEET- MSL)
Previously Installed Piezometers
P1
1983
Earthen Dam
PVC
2.00
1015210.58
2030732.42
475.86
473.43
32.09
443.77
?
?
?
51.22
?
?
?
?
P1A
1983
Earthen Dam
PVC
2.00
1015207.52
2030735.62
475.00
473.38
35.19
439.81
?
?
?
36.40
?
?
?
?
P2
1983
Earthen Dam
PVC
2.00
1014965.67
2031226.56
458.65
455.77
44.96
413.69
?
?
?
49.66
?
?
?
?
P2A
1983
Earthen Dam
PVC
2.00
1014968.75
2031221.26
458.62
456.17
Dry
Dry
?
?
?
18.00
?
?
?
?
P3
1983
Earthen Dam
PVC
2.00
1014648.01
2031793.01
446.99
443.69
52.58
394.41
?
?
?
67.84
?
?
?
?
P3A
1983
Earthen Dam
PVC
2.00
1014650.72
2031787.93
445.69
443.39
50.83
394.86
?
?
?
51.34
?
?
?
?
P4
1983
Earthen Dam
PVC
2.00
1014521.83
2031950.40
454.57
452.59
37.55
417.02
?
?
?
64.15
?
?
?
?
P4A
1983
Earthen Dam
PVC
2.00
1014524.33
2031947.13
454.99
452.70
36.15
418.84
?
?
?
36.17
?
?
?
?
Notes:
BGS - Below ground surface NA - Not applicable MSL - Mean sea level NM - Not measured
1-Well depths and depth to water (DTW) measured by SynTerra, June 17, 2015
2 - "Boring Depth" is the total depth of soil boring; "Total Well Depth" is the depth to the bottom of the filter pack
3 - Values measured during well installation
? - No boring logs available for previously installed piezometers
*Water level was still recharging during 24-Hour water level reading
** Estimated until ground surface elevation is resurveyed
Monitoring well coordinate and elevation data for newly installed wells from surveys provided by McKim & Creed, completed by 6/24/15
PVC- Polyvinyl chloride RS - Needs to be resurveyed RM - Needs to be remeasured
Prepared by: EMB Checked By: DH
Revised by: EMB Rechecked by: JAW
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\1.11 CSA Reporting\Tables\Report Tables\Table 6-5 Well Construction Data.xlsx Page 2 of 2