2016 Annual Dam and Dike Inspection Report
Ash Pond Complex
Conesville Plant
AEP Generation Resources, Inc.
Coshocton County, Ohio
November 30, 2016
Prepared for: AEP Generation Resources – Conesville Plant
Conesville, Ohio
Prepared by: American Electric Power Service Corporation
1 Riverside Plaza
Columbus, OH 43215
GERS-16-155
---Page Intentionally Left Blank---
Pages 3 of 8
Table of Contents
1.0 Introduction ..................................................................................................................4
2.0 Description of CCR Impoundments ...........................................................................4
3.0 Review of Available Information ................................................................................4
4.0 Inspection ......................................................................................................................4 4.1 Metals Cleaning Waste Tank Dike .............................................................................4
4.2 Fly Ash Pond Complex ..............................................................................................5
4.2.1 Changes in Geometry Since Last Inspection .......................................................5
4.2.2 Instrumentation ....................................................................................................5
4.2.3 Impoundment Characteristics ..............................................................................5
4.2.4 Visual Inspection .................................................................................................6
4.2.5 Changes that Effect Stability or Operation ..........................................................6
5.0 Summary of Findings ..................................................................................................6 5.1 General Observations .................................................................................................6
5.2 Maintenance Items .....................................................................................................6
5.3 Items to Monitor .........................................................................................................7
5.4 Deficiencies ................................................................................................................8
Attachments Attachment A – Pictures
Attachment B – Site Maps
Attachment C – Instrumentation Data
Pages 4 of 8
1.0 INTRODUCTION
This report was prepared by AEP- Geotechnical Engineering Services (GES) section, in part, to fulfill
requirements of 40 CFR 257.83 and the Ohio Department of Natural Resource (ODNR), Division of Water
Dam Inspection Section and to provide AEP Generation Resources and the Conesville Power Station with
an evaluation of the facility.
Mr. Cyril Burkhart, Landfill Supervisor for the Conesville Plant provided onsite coordination for inspection
activities. The inspection was performed on October 25, 2016 by Brian Palmer of AEP Geotechnical
Engineering. Also onsite for the inspection were Beth Mullen and Tony McClain from the Conesville Plant.
Weather conditions were sunny with temperatures in mid-30̊s F to Lower-60̊s F, the day started foggy and
was clear and sunny at the end of the inspection.
2.0 DESCRIPTIONS OF IMPOUNDMENT
The Ash Pond Complex is comprised of diked embankments on the north, southeast, and south sides.
County Road 273 runs along the toe of the north dike, a Plant haul road run along the top of the north dike,
and a coal haul road runs along the crest or exterior of the Southeast dike. The northwest side of the Ash
Pond Complex is located adjacent to a closed landfill area. There are three main ponds within the Ash
Pond Complex as listed below.
List of Main Ponds within the Ash Pond Complex
Fly Ash Pond
Bottom Ash Pond
Clearwater Pond
The Fly Ash Pond has internal splitter dikes that divide it into areas referred to as Ponds 1, 2, 3, and 4. The
Bottom Ash Pond has an internal splitter dike creating the Bottom Ash Pond and Pond 5. Water enters the
Ash Pond complex through either the Bottom Ash Pond or Pond 1. From the Bottom Ash Pond or Pond 1
water flows through the Ash Pond Complex in order from Pond 2, Pond 3, Pond 4, and Pond 5 before
reaching the Clearwater Pond where it is discharged to the Holding Pond.
The Inspection included the Dike for the Metals Waste Cleaning tank as it is adjacent to the South dike of
the Ash Pond complex
3.0 REVIEW OF AVAILABLE INFORMATION (257.83(b)(1)(i))
A review of available information regarding the status and condition of the Ash Pond Complex, which
include files available in the operating record, such as design and construction information, previous
periodic structural stability assessments, previous 7 day inspection reports, and previous annual inspections
has been conducted. Based on the review of the data there were no signs of actual or potential structural
weakness or adverse conditions.
4.0 INSPECTION (257.83(b)(1)(ii))
4.1 METALS CLEANING WASTE TANK DIKE (NON-CCR)
A visual inspection of the dike for Metals Cleaning Waste Tank was conducted to identify any signs
of distress or malfunction of the secondary containment system. Overall the facility is in good
condition. The secondary containment is functioning as intended with no signs of potential structural
weakness or conditions which would be disruptive to the safe operation of the containment system.
Inspection photos are included in Appendix A. Additional pictures taken during the inspection can be
made available upon request. Figures of the Metals Cleaning Waste Tank are included in Appendix
B.
Pages 5 of 8
4.2 ASH POND COMPLEX
4.2.1 CHANGES IN GEOMETRY SINCE LAST INSPECTION (257.83(b)(2)(i))
No modifications have been made to the exterior geometry of the Ash Pond Complex since the 2015
annual inspection. The interior geometry changed with the addition of the splitter dike in the Bottom
Ash Pond creating Pond #5, the abandonment of the old outfall structures from Pond #4 and #5 into
the Clearwater Pond and the installation of new culverts to manage flow through the pond complex.
4.2.2 INSTRUMENTATION (257.83(b)(2)(ii))
The location and type of instrumentation is shown on Figure 7 in Appendix B. The maximum
recorded readings of each instrument since the previous annual inspection is shown in Table 1
below.
Table 1 – INSTRUMENTATION DATA
Ash Pond Complex
Instrument Type
Maximum Reading
since last annual
inspection
Date of reading
B7 Piezometer 736.64 4/28/16
P-11 Piezometer 729.24 3/3/16
P-12 Piezometer 749.91 11/12/15
P-13 Piezometer 750.48 1/7/16
B-0901 Piezometer 729.54 3/3/16
B-0902 Piezometer 756.19 8/18/16
B-0903 Piezometer 747.17 11/12/15
B-0904 Piezometer 744.12 3/3/16
Piezometers readings were generally consistent since the last inspection with the exception of B-7
which had an unexplained high reading in April 2016. A graph of the piezometer readings is
included in Attachment C.
4.2.3 IMPOUNDMENT CHARACTERISTICS (257.83(b)(2)(iii, iv, v))
Table 2 is a summary of the minimum, maximum, and present depth and elevation of the impounded
water & CCR since the previous annual inspection; the storage capacity of the impounding structure
at the time of the inspection; and the approximate volume of the impounded water and CCR at the
time of the inspection.
Table 2 – IMPOUNDMENT CHARACTERISTIC DATA
Impoundment Characteristics Ash Pond Complex
Approximate Minimum depth of impounded water since last annual inspection <1-ft
Approximate Maximum depth of impounded water since last annual inspection ~20-ft
Approximate Present depth of impounded water at the time of the inspection ~10 ft (avg)
Approximate Minimum depth of CCR since last annual inspection ~6-ft
Approximate Maximum depth of CCR since last annual inspection ~32-ft
Approximate Present depth of CCR at the time of the inspection ~15-ft (avg)
Storage Capacity of impounding structure at the time of the inspection 2,500 ac-ft.
Approximate volume of impounded water at the time of the inspection ~780 ac-ft.
Approximate volume of CCR at the time of the inspection 1,100 ac-ft
Notes:
1. Water and CCR elevations vary across the Ash Pond Complex
2. Values based on observations, bottom elevation of 730, max. operating pool of 762
Pages 6 of 8
4.2.4 VISUAL INSPECTION (257.83(b)(2)(i))
A visual inspection of the Ash Pond Complex was conducted to identify any signs of distress or
malfunction of the impoundment and appurtenant structures. The inspection also included hydraulic
structures underlying the base of the dike. Specific items inspected included all structural elements of
the dam such as inboard and outboard slopes, crest, and toe; as well as appurtenances such as the
outlet structure at the Bottom Ash Pond and Clearwater Pond, and pipe discharge structure.
Overall the facility is in good condition. The impoundment is functioning as intended with no signs of
potential structural weakness or conditions which are disrupting to the safe operation of the
impoundment. Inspection photos are included in Appendix A. Additional pictures taken during the
inspection can be made available upon request. Figures of the Ash Pond Complex are included in
Appendix B.
4.2.5 CHANGES THAT EFFECT STABILITY OR OPERATION (257.83(b)(2)(vii))
Based on interviews with plant personnel and field observations there were no changes to the Ash
Pond Complex since the last annual inspection that would affect the stability or operation of the
impounding structure.
5.0 SUMMARY OF FINDINGS
5.1 GENERAL OBSERVATIONS
The following general observations were identified during the visual inspection:
Metals Cleaning Waste Tank Dike
1) The outboard slopes, crest and inboard slopes of the embankment were generally in good
condition. The embankments did not show any signs of structural weakness or instability. The
vegetation along the embankments was well established. The interior membrane liner
appeared to be in satisfactory condition. The crest did not contain any ruts or other signs of
instability. Specific maintenance and items to monitor are described in the subsequent sections
of this report.
Ash Pond Complex
2) The outboard slopes, crest and inboard slopes of the embankments were generally in good
condition. The embankments did not show any signs of structural weakness or instability. The
vegetation along the embankments was well established. The crest did not contain any ruts or
other signs of instability. Specific maintenance and items to monitor are described in the
subsequent sections of this report.
3) The hydraulic structure from the Clearwater Pond were generally in good condition. There
were no signs of deterioration of the concrete or steel structures. Stop logs were available for
use. Flow within the pipes appeared unobstructed. Specific maintenance and items to monitor
are described in the subsequent sections of this report.
5.2 MAINTENANCE ITEMS
The following maintenance items were identified during the visual inspection, see inspection map for
locations:
Metals Cleaning Waste Tank Dike
1) No specific items identified related to the Metals Cleaning Waste Tank Dike.
Pages 7 of 8
Ash Pond Complex
2) The lack of booms around the outlet structure in the Clearwater Pond has allowed floating
debris to enter the Wastewater Holding Pond. Recommend booms around the outlet structure
to minimize the discharge of floating debris to the Wastewater Holding Pond.
3) The Exterior slope of the south dike had an area above the MCWT dike that has been
previously identified for lack of vegetation. (Photo 6) Plant noted that the area has become a
Canadian Geese nesting area which limits the ability to re-establish vegetation. Recommend
deploying deterrents (e.i. erosion control matting) in area to assist with the establishment of
grass.
4) Interior of Southeast slope has former animal borrows and a stabilized erosion gully that are
unable to be mowed (Photo 16). The lack of mowing has allowed woody vegetation to start to
be established. Area needs to have the vegetation removed and the surface repaired to allow
proper mowing.
5) Isolated woody plants (autumn olive) have started to be established on the interior and exterior
(below coal haul road) of the southest dike (Photos 18 & 29). Woody vegetation (primarily
autumn olive) have established along the exterior toe (Photos 29 & 32). Trees become have
established on the embankment above the outfall discharge pipe (Photo 27 & 28). Plant needs
to work to remove the vegetation and clear a path along the toe in compliance with AEP
Circular letter and ODNR Dam Safety Regulations.
6) Abandoned culverts (See Photo 31) under original coal haul road need to be video inspected
and a disposition plan be developed for these culverts in conjunction with the long-term
modification/closure of the Ash Pond Complex.
7) The vegetation in the road side ditch along County Road 273 at the toe of the North dike and the
cattail area at the east end of the North dike need to be maintained.
5.2 ITEMS TO MONITOR
The following items were identified during the visual inspection as items to be monitored, see
inspection map for locations:
Metals Cleaning Waste Tank Dike
1) No specific items identified related to the Metals Cleaning Waste Tank Dike.
Ash Pond Complex
2) Exterior area of the South dike west of MCST dike had tree sapling growing with the grass.
(Photo 2.2). Mowing will control growth, area needs to be monitored and evaluated if more
direct measures need to be taken.
3) Previous inspections have identified the standing water in the road side ditch along County
Road 273 at the toe of the North dike. Clearing of the downstream drainage channel appears
to have eliminated this issue. Continue to monitor toe and ditch for standing water and
coordinate corrective actions as needed.
Pages 8 of 8
5.3 DEFICIENCIES (257.83(b)(2)(vi))
There were no signs of structural weakness or disruptive conditions that were observed at the time of
the inspection that would require additional investigation or remedial action. There were no
deficiencies noted during this inspection or any of the periodic 7-day or 30-day inspections. A
deficiency is defined as either 1) uncontrolled seepage, 2) displacement of the embankment, 3)
blockage of control features, or 4) erosion, more than minor maintenance. If any of these conditions
occur before the next annual inspection contact AEP Geotechnical Engineering immediately
If you have any questions with regard to this report, please contact Brian Palmer at 614-716-3382
(Audinet: 200-3382) or Gary Zych at 614-716-2917 (Audinet: 200-2917).
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Appendix A
2016 DAM AND DIKE INSPECTION
CONESVILLE PLANT
METALS CLEANING WASTE TANK DIKE AND ASH POND COMPLEX
INSPECTION PHOTOGRAPHS
--INTENTIONALLY LEFT BLANK--
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 1 of 14
Photograph No. 1
Looking East along crest of South
MCWT dike – General Condition
Photograph No. 2
Looking west along toe of south
MCWT dike – General Condition
Photograph No. 3
Crest/Interior of East MCWT dike
looking north – General Condition
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 2 of 14
Photograph No. 4
Toe/Exterior of East MCWT dike
looking south – General Condition
Photograph No. 5
Crest of liner for MCWT common
Dike with Ash Pond Complex –
General Condition
Photograph No. 6
Unvegetated area of APS south dike
above MCWT dike. Staff report
goose nesting hampering
establishment of vegetation.
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 3 of 14
Photograph No. 7
Crest/interior of west MCWT dike
looking North – General Condition
Photograph No. 8
Toe/Exterior of west MCWT dike
looking south. – General Condtion
Photograph No. 9
Toe/exterior of south dike of Ash
Pond Complex looking west from
MCWT dike. – General condition
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 4 of 14
Photograph No. 10
Start of woody vegetation on
exterior of south dike of Ash Pond
Complex. Continue mowing to
control and monitor.
Photograph No. 11
Crest of South Dike looking East
from west corner – General
Condition
Photograph No. 12
Bottom Ash discharge structure.
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 5 of 14
Photograph No. 13
Crest/Interior of Northwest dike
along bottom ash pond looking
North – General Condition
Photograph No. 14
Crest/exterior of Northwest dike
along bottom ash pond looking
South – General Condition
Photograph No. 15
Interior/Toe Southeast dike near
northeast corner, looking south –
General Condition
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 6 of 14
Photograph No. 16
Area of rough ground on interior of
southeast dike near north end that is
unable to be mowed and is starting
to develop woody vegetation.
Photograph No. 17
Interior toe of southeast dike Pond 3
area looking North – General
condition
Photograph No. 18
Interior slope of Southeast dike at
Pond 4, high vegetation with some
woody vegetation starting to be
established.
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 7 of 14
Photograph No. 19
Work to develop access along
interior slope of Pond 4 area to
allow safe maintenance of slope.
Photograph No. 20
Interior Crest of Southeast dike with
coal haul road looking north –
General Condition
Photograph No. 21
Interior of Southeast dike as it starts
to raise above the coal haul road
looking north – general condition
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 8 of 14
Photograph No. 22
Crest where Southeast dike starts to
raise above the coal haul road
looking south – general condition
Photograph No. 23
Exterior of Southeast dike at Coal
Haul road looking north near
southern corner – general condition.
Photograph No. 24
Crest/Interior of Southeast dike
from Southern corner looking north
– General Condition.
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 9 of 14
Photograph No. 25
Crest/Interior of South dike looking
west from East corner – general
condition.
Photograph No. 26
Toe/exterior of south dike looking
west from east corner – general
condition.
Photograph No. 27
Southeast dike below haul road
looking at access towards discharge
structures. Trees on embankment.
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 10 of 14
Photograph No. 28
Outlet end of discharge from
Clearwater Pond outlet structure. –
general condition.
Photograph No. 29
Exterior/Toe area of Southeast dike
below coal haul road – woody
vegetation on slope and
encroaching on toe.
Photograph No. 30
Stabilized erosion area on Southeast
Dike below Coal Haul Road.
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 11 of 14
Photograph No. 31
Former culverts at toe of Southeast
dike below coal haul road. – Pipes
to be videoed to verify condition.
Photograph No. 32
Toe of Southeast Dike looking
south. Excessive woody vegetation
at the toe.
Photograph No. 33
Exterior of North dike Looking
West – General Condition
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 12 of 14
Photograph No. 34
Cattail area at toe of North Dike.
Photograph No. 35
Toe of North dike looking East near
end of Ash Pond Complex – general
condition
Photograph No. 36
Exterior slope of North Dike
looking East near end of Ash Pond
Complex. – general condition
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 13 of 14
Photograph No. 37
Crest of North Dike looking East
near end of Ash Pond Complex. –
general condition
Photograph No. 38
Interior slope of North Dike looking
East near end of Ash Pond
Complex. – general condition
Photograph No. 39
Toe/Interior slope of North Dike
looking west from northeast corner
of Ash Pond Complex. – general
condition
Appendix A, Conesville Metals Cleaning Waste Tank (MCWT) Dike and Ash Pond Complex
Inspection Photographs
Photographs taken on October 25, 2016
I:\Dam & Dike Inspections\DIMP 2016\Conesville\Engineering Inspection Report\Appendix A.docx Page 14 of 14
Photograph No. 40
Ash Pond Complex Outlet Structure
in Clearwater pond – General
Condition
Photograph No. 41
Discharge over stoplogs at Ash
Pond Complex Outlet Structure.
ATTACHMENT B
Inspection / Instrumentation Location Maps
---Page Intentionally Left Blank---
GROUND OBSCURED
750
745
745745
750
750
755
760
760
765
765
X745.1
X745.4
X745.4
X746.8
X745.5
X747.1
X747.2
X747.4
X770.1
X756.8
X768.8
X744.3
DATE:
SCALE:1"=60'
DRN BY:GRS
1 RIVERSIDE PLAZA
COLUMBUS, OH 43215
AEP SERVICE CORP.
DWG NO:FIGURE 2CONESVILLE POWER STATION
SHEET 2 of 7
METAL CLEANING TANK
PL
OT
DA
TE:11/28/2016
PL
OT
TI
ME:9:4
9:5
8
AM
s259464
BY:
189600 189600
189800 189800
2143200
21
43
20
0
2143400
21
43
40
0
METAL CLEANING TANK
W E
NPOND #5
750
750
750
760
760
760
760
760
760
760
760
760
760
760
760
760
770
770
770
780
790
CONVEYOR
748.65
104
755.3W.E.
763.6
762.7
766.7
762.2
775.1
774.7
761.5762.6
773.2
762.9
763.5
765.5
763.8
775.4
775.9
759.6
751.6
750.9
747.3
760.6
758.7
750.9
751.3
747.5
797.3
796.5
761.6756.9
750.7
766.6
759.7
759.6
759.2
767.4
758.3
757.1
757.8
767.1
768.3
768.7
767.2
762.3
767.4
767.1
766.4
751.5
749.4
759.3
758.5
763.1
763.6
761.6
768.7
766.7
757.3
761.1
761.2
755.2
768.9757.8
804.7
749.4762.7
747.5
747.1
752.2
774.8
755.6
750.7
768.2
759.6
757.8
765.1
765.6
764.2800.2
763.2759.4
769.4
755.7
763.8
762.3
766.7763.9
762.3 762.9
764.5
764.2
764.4
764.7
780.6
778.4
769.9
761.9
766.4
768.4
775.7
768.8
768.8
766.5
764.8
759.1
762.4
GROUND OBSCURED
765
745
750
745
740
745
745
745745
750
750
750
750
750
750
755
755
755
755
760
760
760
760
760
760
765
765
765
X752.1
X752.3
X759.5
X770.0
X743.1
X742.7
X744.9
X745.4
X745.1
X744.9
X745.1
X745.4
X745.4
X746.8
X745.5
X747.1
X747.2
X747.4
X770.1
X769.4
X770.0
X756.8
X768.8
X744.3
X749.7
X751.7X753.2
X750.5
X749.1
X746.8
3-16-05 AERIAL MAPPING
RAISED 1.22'
AERIAL MAPPING
MATCHES 10-31-05
W E
N
DATE:
SCALE:1"=200'
DRN BY:
1 RIVERSIDE PLAZA
COLUMBUS, OH 43215
AEP SERVICE CORP.
DWG NO:FIGURE 3CONESVILLE POWER STATION
SHEET 3 0F 6
ASH POND COMPLEX
PL
OT
DA
TE:11/28/2016
PL
OT
TI
ME:9:5
6:0
1 A
Ms259464
BY:
POND #5
CLEA
R W
ATER P
OND
POND #2
BOTTOM ASH POND
21
43
00
02143000
191000
2143500
21
44
00
02144000
21
43
50
0
190000
189500189500
190000
191000
190500190500
POND #4
760
760
760
760
760
760
770
780
DOCK
758.1
758.1W.E.
W.E.
760.9
761.2
761.3
760.5
760.9
765.5
763.1
766.7
757.3
767.6
769.3
767.1
761.2
762.7
763.7
765.4
758.8
763.3
758.9
757.9
759.7
767.5
758.9
766.8
755.2
761.5
766.4
770.5
777.3
784.4
768.2
766.4
757.8
764.3
765.7
770.9
763.1
W E
N
DATE:
SCALE:1"=200'
DRN BY:
1 RIVERSIDE PLAZA
COLUMBUS, OH 43215
AEP SERVICE CORP.
DWG NO:FIGURE 4CONESVILLE POWER STATION
SHEET 4 0F 6
ASH POND COMPLEX
PL
OT
DA
TE:11/28/2016
PL
OT
TI
ME:9:2
5:2
4
AM
s259464
BY:
POND #3
POND #4
2145000
21
44
50
02144500
21
45
50
02145500
21
45
00
0190500
190000190000
191000191000
190500
740
750
760
760
770
770
770
770
770
780
780
790
800
760.2W.E.
797.4760.3
801.1
770.9
803.2
764.9
806.6
806.7804.9
809.2
770.5
749.3
760.9
761.2
761.3
760.5
760.9
760.3
760.3
760.4
760.5
759.9
763.1
763.1
758.9
757.9
759.7
767.5
758.9
803.6
805.3
777.3
784.4
789.1
793.4
797.4
807.2
809.5
740.7
774.5772.9773.1
767.4766.4
738.7737.8
770.9
763.1
759.9
771.1
772.1806.1
W E
N
DATE:
SCALE:1"=200'
DRN BY:
1 RIVERSIDE PLAZA
COLUMBUS, OH 43215
AEP SERVICE CORP.
DWG NO:FIGURE 5CONESVILLE POWER STATION
SHEET 5 0F 6
ASH POND COMPLEX
PL
OT
DA
TE:11/28/2016
PL
OT
TI
ME:9:2
2:4
3
AM
s259464
BY:
POND #3
POND #4
2146000
21
45
50
02145500
21
46
50
02146500
21
46
00
0
191500
191000191000
192000192000
191500
740
750
750
760
760
760
760
760
760
760
760
770
770
770
770
780
790
810
808.80
105
760.2W.E.
758.1W.E.
749.6W.E.
761.5
760.9758.7
758.2
758.5
760.5757.3
758.3
757.4
760.7
759.1
760.4759.1
759.3
760.3
760.7
760.5
760.8
761.3
760.5761.1811.7
760.4760.8
766.9
760.9
760.7
761.2
762.7
763.7
765.4
762.1
765.3
759.1
767.2
757.9
759.7
767.5
758.9
766.8
768.9
759.8
772.9773.1
767.4
773.9773.3773.5773.7
773.9
737.8737.8736.8
736.5737.1737.7
737.5
764.5
762.3
762.3
762.4
766.2
757.7
762.9
765.7
763.2
767.9
751.7
752.2
750.8
750.8
751.7
757.7
757.9
756.9
757.6
756.9
766.7
759.9
762.4
762.1
759.9
762.7
762.8
766.4
768.3
765.7
761.2
W E
N
DATE:
SCALE:1"=200'
DRN BY:
1 RIVERSIDE PLAZA
COLUMBUS, OH 43215
AEP SERVICE CORP.
DWG NO:FIGURE 6CONESVILLE POWER STATION
SHEET 6 0F 6
ASH POND COMPLEX
PL
OT
DA
TE:11/28/2016
PL
OT
TI
ME:9:1
9:5
4
AM
s259464
BY:
POND #4
POND #3
POND #2
POND #1
21
44
00
02144000
192500
2144500
21
45
00
02145000
21
44
50
0
191500
191000191000
191500
192500
192000192000
107742.97
765
745
750
745
740
745
745
745
745745
750
750
750
750
750
750
755
755
755
755
760
760
760
760
760
760
765
765
765
X746.8
X745.0
X743.3
X752.1
X752.3
X759.5
X770.0
X743.1
X742.7
X744.9
X745.4
X745.1
X744.9
X744.8
X743.2
X742.6
X743.3
X743.1
X745.1
X745.4
X745.4
X746.8
X745.5
X747.1
X747.2
X747.4
X770.1
X769.4
X770.0
X756.8
X768.8
X744.3
X749.7
X751.7X753.2
X750.5
X749.1
X746.8
740740
750
750
750
750
750
750
760
760
760
760
760
760
760
760
760
760
760
760
760
760
760
760
760
760
760
760
760
760
760
760
770
770
770
770
770770
770
770
770
770
770
770
770
770
780
780
780
780
780
790
790
790
790
800
800
800
810
810
DOCK
CONVEYOR
748.65
808.80
104
105
760.2W.E.
758.1
758.1W.E.
W.E.
749.6W.E.
755.3W.E.
797.4760.3
801.1
770.9
803.2
764.9
806.6
806.7804.9
809.2
770.5
749.3
763.6
762.7
766.7
762.2
775.1
774.7
761.5762.6
773.2
759.3773.1773.5
759.3
760.9758.7
761.2758.9
761.3758.2
758.5
760.5757.3758.4
811.8
760.9758.3
760.3
760.3757.4
760.4815.6
760.5760.7
759.9759.1815.6
760.4759.1
813.4816.8
759.3
760.3
760.7815.9
760.5811.1
760.8814.9
761.3815.1
760.5761.1811.7
812.8
760.4760.8
766.9
760.9
760.7
762.9
763.5
765.5
763.8
763.1
763.1
775.4
775.9
759.6
771.4
751.6
750.9
747.3
760.6
758.7
750.9
751.3
752.7
752.7
764.4
747.5
797.3
796.5
761.6756.9
750.7
766.6
759.7
759.6
759.2
767.4
758.3
757.1
757.8
767.1
768.3
768.7
767.2
762.3
767.4
767.1
766.4
751.5
749.4
759.3
758.5
763.1
763.6
761.6
768.7
766.7
757.3
767.6
769.3
767.1
761.1
761.2
762.7
763.7
765.4
762.1
765.3
759.1
767.2
758.8
763.3
758.9
757.9
759.7
767.5
758.9
766.8
768.9
759.8803.6
805.3
755.2
761.5
766.4
770.5
777.3
784.4
789.1
793.4
797.4
807.2
809.5
740.7
774.5772.9773.1
767.4766.4
773.9773.3773.5773.7
773.9773.9
738.7737.8
737.8736.8736.5737.1
737.7737.5
764.5
762.3
762.3
762.4
767.0
766.2
774.4
751.4
768.9757.8
804.7
749.4762.7
747.5
747.1
752.2
774.8
774.1
755.6
750.7
768.2
759.6
757.8
765.1
765.6
764.2800.2
763.2759.4
769.4
755.7
763.8
762.3
766.7763.9
816.1
757.7
762.3 762.9
764.5
764.2
764.4
764.7
780.6
778.4
769.9
761.9
766.4
768.4
775.7
768.8
768.8
766.5
764.8
759.1
762.4
765.7
763.2
767.9
751.7
752.2
750.8
750.8
751.7
757.7
757.9
768.2
756.9
757.6
756.9
766.7
759.9
762.4
762.1
759.9
762.7
762.8
766.4
768.3
757.8
764.3
765.7
770.9
763.1
759.9
771.1
772.1806.1
774.3
761.2
IMAGERY DATE: MARCH 2006
UNIT: U.S. SURVEY FEET
ZONE: OHIO NORTHERN
DATUM: NORTH AMERICAN DATUM OF 1983 (NAD83)
HORIZONTAL CONTROL:
W E
N
21
44
00
02144000
2144500
2145000
21
44
50
0
2143000
21
42
50
0
21
43
00
0
21
43
50
02143500
21
45
00
0
2147000
21
46
50
0
21
47
00
0
21
47
50
02147500
21
45
50
02145500
2146000
2146500
21
46
00
0
190500
190000
190500
191000191000
189000189000
189500
190000
189500
191500
21
41
50
02141500
2142000
2142500
21
42
00
0
192000
191500
192000
192500192500
P13
P11
B-7
PZ-0901
PZ-0902
PZ-0903
PZ-0904
P12
DATE:
SCALE:1"=400'
DRN BY:AG
1 RIVERSIDE PLAZA
COLUMBUS, OH 43215
AEP SERVICE CORP.
DWG NO:FIGURE 7CONESVILLE POWER STATION
INSTRUMENTATION PLAN
ASH POND COMPLEX
PL
OT
DA
TE:
PL
OT
TI
ME:
BY:s252086
3:4
2:2
0
PM
12/8/2016
ATTACHMENT C
Instrumentation Data
---Page Intentionally Left Blank---
Dates BAP FAP CWP B-6 B-7 B-11 B-12 B-13 B-0901 B-0902 B-0903 B-0904
3/9/2009 754.18 758.44 752.94 DR 724.67 726.78 747.75 749.8 NR NR NR NR
6/30/2009 754.72 757.95 753.48 DR 724.67 726.78 747.75 749.8 725.79 NR 724.47 742.8
9/28/2009 755 757.91 753.45 DR 722.43 724.87 745.55 749.8 725.23 760.07 724.39 743.02
12/31/2009 757.2 758.13 753.92 DR 724.32 726.18 746.17 749.77 727.15 759.63 NR 743.02
3/31/2010 757.96 758.13 753.98 DR 728.48 730.52 747.19 749.82 730.95 760.92 748.02 743.15
6/21/2010 756.8 757.07 753.86 DR 726.9 728.59 748.03 749.77 729.19 759.64 744.04 743.19
9/29/2010 753.891 757.275 752.554 DR 722.65 725.17 746.42 749.73 726.18 755.18 729.68 742.91
12/31/2010 755.567 757.91 754.18 DR 723.79 726.1 747.53 750.22 727.28 755.98 744.12 743.1
3/31/2011 754.94 757.43 753.89 DR 730.13 732.1 748.96 749.7 732.06 757.27 746.81 743.26
6/29/2011 757.66 757.95 754.48 DR 725.73 728.13 750.35 749.73 728.87 756.83 747.67 743.37
9/29/2011 755.65 758.09 753.94 DR 723.02 725.57 750.11 749.72 726.77 756.09 747.88 743.52
12/22/2011 753.7 757.9 753.2 DR 728.13 730.25 749.72 749.77 731.39 757.24 747.72 743.65
3/29/2012 754.34 757.99 753.19 DR 725.49 727.62 749.85 749.76 728.73 756.85 747.84 743.46
6/29/2012 757.36 758.11 753.65 DR 722.16 725.07 750.57 749.76 726.01 755.98 748.63 743.47
9/20/2012 NF 758.65 752.63 DR 722.31 725.19 749.3 749.79 726.64 756.32 747.28 743.4
12/5/2012 NF 757.41 752.63 DR 722.5 725.44 748.61 749.77 725.79 755.62 746.86 743.52
3/12/2013 NF 756.94 752.52 DR 724.49 727.29 748.84 749.21 728.43 756.22 747 743.38
6/5/2013 NF 757.28 752.63 DR 722.36 724.97 749.49 744.62 726.58 756.76 747.45 743.37
12/19/2013 NF 757.95 752.74 DR 722.2 726.19 748.84 750.07 728.15 756.63 747 743.99
3/24/2014 NF 758.45 752.08 DR 724.67 728.37 748.65 749.72 728.93 757.24 746.1 743.34
6/5/2014 NF 757.05 753.14 DR 725.2 727.65 749.45 749.79 728.43 756.44 746.75 743.37
9/3/2014 NF 757.45 753.24 DR 723.9 725.57 748.75 748.92 727.93 755.14 747.1 743.07
3/9/2015 754.6 757.75 753.04 DR 720.9 725.57 749.85 748.92 726.88 754.99 749.6 743.07
6/18/2015 754.6 757.05 752.64 DR 720.02 725.69 750.14 749.64 727.5 755.23 747.54 743.39
9/24/2015 754.6 757.5 754.14 DR NR 725.23 749.71 749.77 726.19 754.46 747.15 743.58
11/12/2015 NR NR 753.04 DR 720.57 725.16 749.91 750.01 726.09 754.5 747.17 743.61
12/10/2015 753.4 NR 753.54 DR 722.04 729.24 747.6 749.78 729.54 755.19 743.69 744.12
1/7/2016 NR NR 754.54 DR 722.95 726.09 747.44 750.58 728.73 755.30 745.01 743.32
2/4/2016 NR NR 754.64 DR 722.61 725.86 747.25 750.10 727.08 754.83 744.44 743.27
3/3/2016 753.7 NR 753.54 DR 722.04 729.24 747.60 749.78 729.54 755.19 743.69 744.12
3/31/2016 NR NR NR DR 722.35 728.32 747.55 750.47 728.18 755.54 744.35 743.37
4/28/2016 NR 757.48 753.94 DR 736.64 725.62 747.49 749.80 728.47 755.14 743.89 743.22
5/26/2016 NR 757.78 754.4 DR 723.93 727.13 747.63 750.27 727.96 755.79 744.78 743.20
6/23/2016 NR 757.88 754.74 DR 723.13 725.39 748.13 749.77 727.79 755.64 744.25 743.13
7/21/2016 NR 757.88 754.74 DR 721.18 725.10 747.69 749.81 725.81 755.47 744.65 743.19
8/18/2016 NR 758.98 754.6 DR 722.04 725.21 748.29 749.80 725.99 756.19 745.64 743.41
9/12/2016 NR 757.98 753.5 DR 722.98 725.04 747.85 749.72 727.78 755.79 744.82 743.18
10/10/2016 NR 757.68 752.5 DR 722.65 725.02 747.70 749.08 727.61 755.90 744.79 743.13
11/7/2016 NR 756.58 753.2 DR 721.83 725.08 747.01 749.36 725.92 754.81 745.68 743.01
NF - No Flow
Table C1- Summary of Instrumentation Data.
DR - Destroyed
ND - No data
NR - No Reading
DM - Damaged
715
720
725
730
735
740
745
750
755
760
ELE
VA
TIO
N, F
EE
T
TIME, QUARTERLY
FIGURE 8 - INSTRUMENTATION DATA.
FAP CWP B-7 P-11 P-12 P-13 B-0901 B-0902 B-0903 B-0904 BAP