NC0038377_STANTEC-Mayo-UTILITIES_20150902

�j Stantec
Notes
1. Coordinate System: WGS 1984 Web Mercator Auxiliary Sphere
2. Aerial Source: MapMart Imagery (Dated 2/11/2015)
ESRI World Imagery (Dated 5/10/2010)
3. Pipe Location and Length Shown are Approximate
DRAFT
tndotte
Halifax
Pittsylvania Virginia
Mec nburg
Danville
North Granville Vance
Caswell Carolina
Person
Client/Project
Parker Poe Adams & Bernstein LLP /
Duke Energy Non-CCB Impoundment Pipe Inspection
Site Scouting
Figure No.
1 - Site Layout
Title
MAYO STEAM STATION
Roxboro, North Carolina

SKIMMER BASIN D
Two 24-Inch Diameter CMP Outlets
(Reported to be Abandoned)
24-inch Diameter RCP (Mayo-17)
(See Figure 3, Photograph No. 12)
36-inch Diameter HDPE (Mayo-15)�
(See Figure 3, Photograph No. 10)�
-- Ash Pond Dam
SKIMMER BASIN C 24-inch Diameter HDPE (Mayo-13)
(See Figure 3, Photograph No. 9)
SKB-10 SKIMMER BASIN
t 36-inch Diameter HDPE
(Mayo-14)
FGD SETTLING POND: ;
4-inch Diameter PVC (Mayo-4)
f;£ (See Figure 2, Photograph No. 3)
24-inch Diameter k& (Mayo-1
(See Figure 3, Photograph No. 8)
�18-inch Diameter RCP (Mayo-5) �
ee Figure 2, Photograph No. 4) 24-inch Diameter Steel (Mayo -11)�
4-inch Diameter P C 24-inch Diameter RCP (Mayo-10)v
(Mayo-6) (See Figure 3, Photograph No. 7)
y ,
SKB-11 SKIMMER BASIN
kM dry
64
0
\\ 4-inc iameter P
(Mayo-7)
/'4 \ SKB-13 SKIMMER BASIN
z
48-Inch Diameter Ash
Pond Decant Structure
NOS PHERE CONTAINMENT POND
Weir
Discharge Canal
D FLUSH POND
a
12-inch Diameter RCP (Mayo-1)
(See Figure 2, Photograph No. 1)
Mayo Creek Dames 1 U
10-inch Diameter Metal Valve Pipe (Mayo-2)=//
(See Figure 2, Photograph No. 2)
72-inch Diameter PCCP (Mayo-3;
Dual 6-foot X 6-foot Concrete (Mayo-18 and 19) (See Figure 2, Photograph No. 21
(See Figure 4, Photograph No. 13 and 14)
scharge Canal
30-inch Diameter CMP (Mayo-23 and 24)
%CHEMICAL WASTE BAS1�24-inch Diameter RCP (Mayo-16)
OILY WASTE BASIN (See Figure 3, Photograph No. 11)
F 18-inch Diameter Steel (Mayo-22)
(See Figure 4, Photograph No. 16)
Twin 36-inch Diameter RCP (Mayo-20 and 21)
Az (See Figure 4, Photograph No. 15)
`. 24-inch Diameter RCP (Mayo-8)
`. " (See Figure 2, Photograph No. 5)
L_:_��30-inch Diameter RCP (Mayo-9)`"
(See Figure 2, Photograph No. 6)
Mayo Reservoir
0 800
Feet
1 inch = 800 feet

NO. 3 SKIMMER BASIN
4-inch Diameter PVC (Mayo-26)
4-inch Diameter PVC (Mayo-25)
SB-6 SKIMMER BASIN ,
24-inch Diameter CPP (Mayo-43)�
(See Figure 4, Photograph No. 17)
SB-7 SKIMMER BASIN
4-inch Diameter PVC (Mayo-44)=//
SKIMMER BASIN
6 4
0
Two 18-inch Diameter RCPs (Mayo-27 and 28)
(See Figure 4, Photograph No. 18)
-inch Diameter Pump Station Drainage Culvert (Mayo-29)
Dual 8-foot X 8-foot Concrete
` (Mayo-35 and 36)
(See Figure 6, Photograph No. 25)
{
�4-inch Diameter PVC (Mayo-37) 4-inch Diameter PVC ,•` r,;, s (Mayo-42)
54-inch Diameter RCP (Mayo-30) SB-4 SKIMMER BASIN
(See Figure 5, Photograph No. 19)
Mayo CCP MonofillV21.
@,, Two 18-inch Diameter RCP (Mayo-38 and 39)
(See Figure 6, Photograph No. 26)
NO. 1 SKIMMER BASIN SB-2 SKIMMER BASI
\_-6-inch Dia` . ter CPP (Mayo-32) v
24-inch Diameter RCP (Mayo-3W
18-inch Diameter RCP (Mayo-40)
(See Figure 5, Photograph No. 20 a�SB-3 SKIMMER BASIN
48-inch Diameter RCP (Mayo-33)
`- (See Figure 5, Photograph No. 22) 18-inch Diameter RCP (Mayo-41)-
Q
15-inch Diameter RCP (Mayo-34)
(See Figure 5, Photograph No. 23 and 24) NO. 2 SKIMMER BASIN
-inch Diameter PVC (Mayo-45)
4-inch Diameter PVC (Mayo-46)
;P ?�
IMMER BASIN A
o soo
Feei
1 inch = 500 feet

Photograph No. 1:
12-inch diameter RCP culvert outlet.
Photograph No. 4:
18-inch diameter RCP inlet to SKB-10 Skimmer Basin.
(3 Stantec
Photograph No. 2:
10-inch diameter metal minimum release pipe with
Howell-Bunger valve and 72-inch diameter PCCP
diversion and drawdown (submerged below).
a
x:
s i+x
Photograph No. 5:
24-inch diameter RCP railroad culvert outlet.
DRAFT
Photograph No. 3:
4-inch diameter PVC skimmer.
Photograph No. 6:
30-inch diameter RCP outlet from coal yard.
Client/Project
Parker Poe Adams & Bernstein LLP /
Duke Energy Non-CCB Impoundment Pipe Inspection
Site Scouting
Figure No.
2 - Observation Photographs
Title
MAYO STEAM STATION
Roxboro, North Carolina

Photograph No. 7:
24-inch diameter RCP railroad culvert outlet.
Photograph No. 10:
36-inch diameter HDPE outlet pipe to Ash Pond.
a
0
m
0
Stantec
�E
xo
sy
rn m
2
e
Photograph No. 8:
24-inch diameter RCP railroad culvert outlet.
Photograph No. 11:
24-inch diameter RCP railroad culvert outlet.
DRAFT
— - �• �:
rid a
' ws
1W,
Photograph No. 9:
24-inch diameter HDPE overflow outlet pipe from
FGD Settling Pond.
Photograph No. 12:
24-inch diameter RCP railroad culvert outlet.
Client/Project
Parker Poe Adams & Bernstein LLP /
Duke Energy Non-CCB Impoundment Pipe Inspection
Site Scouting
Figure No.
3 - Observation Photographs
Title
MAYO STEAM STATION
Roxboro, North Carolina

Photograph No. 13:
Dual 6-foot X 6-foot concrete railroad box culvert
inlet from Ash Pond.
Photograph No. 16:
18-inch diameter steel inlet pipe from Oily Waste Basin.
(30 Stantec
rn m
2
e
Photograph No. 14:
Dual 6-foot X 6-foot concrete railroad box culvert
inlet from Ash Pond.
Photograph No. 17:
24-inch diameter CPP outlet from stockpile toe
drain to SB-6 Skimmer Basin.
Photograph No. 15:
Dual 36-inch diameter RCP culvert inlets.
Photograph No. 18:
Two 18-inch diameter RCP outlets to No. 3 Skimmer
Basin.
Client/Project
Parker Poe Adams & Bernstein LLP /
Duke Energy Non-CCB Impoundment Pipe Inspection
Site Scouting
Figure No.
4 - Observation Photographs
fille
STEAM STATION
Roxboro, North Carolina

Photograph No. 19:
54-inch diameter RCP outlet to No. 1 Skimmer Basin.
Photograph No. 22:
48-inch diameter RCP outlet to No. 2 Skimmer
Basin.
(3 Stantec
rn m
2
e
Photograph No. 20:
24-inch diameter RCP outlet structure in No. 1
Skimmer Basin.
0
Photograph No. 23:
15-inch diameter RCP outlet structure in No. 2
Skimmer Basin.
r—. y
♦.^;l r
Photograph No. 21:
24-inch diameter RCP outlet from No. 1 Skimmer
Basin.
Photograph No. 24:
15-inch diameter RCP outlet from No. 2 Skimmer
Basin.
Client/Project
Parker Poe Adams & Bernstein LLP /
Duke Energy Non-CCB Impoundment Pipe Inspection
Site Scouting
Figure No.
5 - Observation Photographs
Y DRAFU Title
o MAYO STEAM STATION
Roxboro, North Carolina

Photograph No. 25:
Dual 8-foot X 8-foot concrete box culverts under
Monofill Haul Road.
(30 Stantec
Photograph No. 26:
One of two 18-inch diameter RCP outlets to
SB-4 Skimmer Basin.
DRAFT
Client/Project
Parker Poe Adams & Bernstein LLP /
Duke Energy Non-CCB Impoundment Pipe Inspection
Site Scouting
Figure No.
6 - Observation Photographs
Title
MAYO STEAM STATION
Roxboro, North Carolina