Attach. 17, 2015-11-24_GGS_NPDES_Sampling DHEC_Transmittal

`psantee Cooper`
CERTIFIED MAIL
November 24, 2015
Mr. Chris Forrest
Groundwater Protection Section
SCDHEC
Bureau of Water
2600 Bull Street
Columbia, South Carolina 29201
Mr. Gary Stewart
State Voluntary Cleanup Section
SCDHEC
Bureau of Land and Waste Management
2600 Bull Street
Columbia, SC 29201
Dear Mr. Forrest:
Re: South Carolina Public Service Authority
Santee Cooper Grainger Generating Station, Horry County
NPDES Permit# SC0001104
NPDES Groundwater Semi-annual Report for 2015
Attached are results from the November 2-5, 2015 groundwater and surface water sampling
event. Separate maps showing sampling locations and arsenic concentrations are included.
Two of the wells, GGSMW-10 and GGSMW-3, both located on Ash Pond 1, and the three
piezometers, located near Ash Pond 2, were inaccessible due to remaining floodwaters from the
1000 -year flood in early October 2015. Several photographs are attached. These sites will be
monitored as soon as the floodwaters retreat and the wells can be safely accessed. The results
will be reported as a separate transmittal.
Lab results showed measurable concentrations of arsenic in four of the sixteen locations where
water samples were analyzed. One was a groundwater well along the down gradient edge of Ash
Pond 1 and three were groundwater wells along the down gradient edge of Ash Pond 2.
An arsenic concentration map is provided to show the distribution of data points across the site.
Non-detectable results in the river, the intake canal, and most of the groundwater wells prevent
the use of isoconcentration lines. Ongoing ash removal activities, which began on March 17,
2014, will cause the groundwater geochemistry to fluctuate.
One Riverwood Drive I Monks Corner, SC 29461-2901 1 [phone] 1 P.O. Box 2946101 I Moncks Corner, SC 2 9461-61 01

Mr. Chris Forrest— SCDHEC
November 24, 2015
Page 2
If you have any questions or comments concerning this project, please contact Melanie D.
Goings, P.G., at [phone] extension 4490.
Sincerely,
Susan W. Jackson, PE
Manager
CCP & Waste Management
SWJ: B:MDG: cgb
Attachments
cc w/attachments:
Frank S. Holleman, III, Esq
Southern Environmental Law Center
601 W. Rosemary Street, Suite 220
Chapel Hill, North Carolina 27516

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Grainger Generating Station
NPDES Groundwater Monitoring
Potentiometric Map
November 2015
Groundwater Contour Interval
23 Groundwater Elevation (feet)
Well ID TOC GW GW
Elevation Depth Elevation
(feet) (feet) (feet)
MW -1 13.32 9.51 3.81
MW -2 11.06 3.32 7.74
MW -3 6.72 NA
MW -4 12.01 12.01 0
MW -5 9.09 4.15 4.94
MW -6 8.19 4.75 3.44
MW -12 14.9 9.49 5.41
MW -9 8.24 2.95 5.29
MW -10 8.92 NA
MW -11 9.63 4.36 5.27
PZ -1 6.66 NA
PZ -2 6.82 NA
PZ -3 7.25 NA
Water levels collected on November 2, 2015.
However, due to the 1000 -year flood, several wells
and piezometers were inaccessible (NA).
11 /23/15: M DG

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"santee cooper
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34595 Location: GW Well GGSMW-1 Date: 11/02/2015
Loc. Code GGSMW-1
Time: 13:40
One Rivera ood Drive
P.O. Box 2946101
Monks Corner, SC 29461-2901
[phone]
Sample Collector:
Analysis
Result QUAL
Units
Test Date
Analyst
Arsenic
<10
ug/L
11/12/2015
KLMORAN
Arsenic -Dissolved
<10
ug/L
11/12/2015
KLMORAN
Barium
73.2
ug/L
11/12/2015
KLMORAN
Cadmium
<5
ug/L
11/12/2015
KLMORAN
Chloride
6.25
mg/L
11/04/2015
LCWILLIA
Spec. Cond.
168
us
11/02/2015
MDGOINGS
Chromium
<5
ug/L
11/12/2015
KLMORAN
Copper
<10
ug/L
11/12/2015
KLMORAN
Depth
9.51
Feet
11/02/2015
MDGOINGS
Elevation
3.81
Feet
11/02/2015
MDGOINGS
Iron
148873.0
ug/L
11/16/2015
KLMORAN
Oxidation Reduction Potential
2
my
11/02/2015
MDGOINGS
Lead
<10
ug/L
11/12/2015
KLMORAN
pH
5.93
Su
11/02/2015
MDGOINGS
Selenium
<10
ug/L
- 11/12/2015
KLMORAN
Sulfate
843
mg/L
11/04/2015
LCWILLIA
Total Dissolved Solids
1416
mg/L
11/11/2015
AJBROWN
Temp
22.53
C
11/02/2015
MDGOINGS
Thallium
<1.0 U
ug/L
11/13/2015
TESTAMERICA
Total Suspended Solids
16.35
mg/L
11/11/2015
AJBROWN
Turbidity
0
NTU
11/02/2015
MDGOINGS
Zinc
62.4
ug/L
11/12/2015
KLMORAN
Independent Laboratory Results: "GEL" - GEL Laboratories LLC - Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001;
"DavisBrown "- Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical. Services
Method
EPA 200.7
EPA 200.7
EPA 200.7
EPA 200.7
EPA 300.0
EPA 200.7
EPA 200.7
EPA 200.7
SM2580
EPA 200.7
EPA 200.7
EPA 300.0
SM 2540C
EPA 200.7 / 6010
SM 2540D
EPA 200.7

SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34596 Location: GW Well GGSMW-2 Date: 11/02/2015
Loc. Code GGSMW-2 Time: 14:25
One Riverxood Drive
P.O. Box 2946101
MonckS Comer, SC 29461-2901
[phone]
Sample Collector:
Analysis
Result QUAL
Units
Test Date
Analyst
Arsenic
<10
ug/L
11/12/2015
KLMORAN
Arsenic -Dissolved
<10
ug/L
11/12/2015
KLMORAN
Barium
59.9
ug/L
11/12/2015
KLMORAN
Cadmium
<5
ug/L
11/12/2015
KLMORAN
Chloride
5.15
mg/L
11/04/2015
LCWILLIA
Spec. Cond.
339
us
11/02/2015
MDGOINGS
Chromium
<5
ug/L
11/12/2015
KLMORAN
Copper
<10
ug/L
11/12/2015
KLMORAN
Depth
3.32
Feet
11/02/2015
MDGOINGS
Elevation
7.74
Feet
11/02/2015
MDGOINGS
Iron
3601.4
ug/L
11/12/2015
KLMORAN
Oxidation Reduction Potential
-61
my
11/02/2015
MDGOINGS
Lead.
<10
ug/L
11/12/2015
KLMORAN
pH
6.5
SU
11/02/2015
MDGOINGS
Selenium
<10
ug/L
11/12/2015
KLMORAN
Sulfate
3.89
mg/L
11/04/2015
LCWILLIA
Total Dissolved Solids
206.0
mg/L
11/11/2015
AJBROWN
Temp
22.85
C
11/02/2015
MDGOINGS
Thallium
<1.0 U
ug/L
11/13/2015
TESTAMERICA
Total Suspended Solids
7.95
mg/L
11/11/2015
AJBROWN
Turbidity
16.7
NTU
11/02/2015
MDGOINGS
Zinc
<10
ug/L
11/12/2015
KLMORAN
Independent Laboratory Results: "GEL" - GEL Laboratories LLC - Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001;
'DavisBrown"- Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
1 �7
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical Services
Method
EPA 200.7
EPA200.7
EPA 200.7
EPA 200.7
EPA 300.0
EPA 200.7
EPA 200.7
EPA 200.7
SM2580
EPA 200.7
EPA 200.7
EPA 300.0
SM 2540C
EPA 200.7 / 6010
SM 2540D
EPA 200.7

One Rivenvoctl Drive
P.O. B..2946101
santee cooper Moncks Comer, SC 29461-2901
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34598 Location: GW Well GGSMW-4 Date: 11/02/2015 Sample Collector:
Loc. Code GGSMW-4 Time: 15:52
Analysis
Result QUAL
Units
Test Date
Analyst
Arsenic
<10
ug/L
11/12/2015
KLMORAN
Arsenic - Dissolved
<10
ug/L
11/12/2015
KLMORAN
Barium
29.8
ug/L
11/12/2015
KLMORAN
Cadmium
<5
ug/L
11/12/2015
KLMORAN
Chloride
23.5
mg/L
11/04/2015
LCWILLIA
Spec. Cond.
288
us
11/02/2015
MDGOINGS
Chromium
<5
ug/L
11/12/2015
KLMORAN
Copper
<10
ug/L
11/12/2015
KLMORAN
Depth
8.34
Feet
11/02/2015
MDGOINGS
Elevation
3.67
Feet
11/02/2015
MDGOINGS
Iron
21599.1
ug/L
11/12/2015
KLMORAN
Oxidation Reduction Potential
0
my
11/02/2015
MDGOINGS
Lead
<10
ug/L
11/12/2015
KLMORAN
pH
5.51
SU
11/02/2015
MDGOINGS
Selenium
10.5
ug/L
11/12/2015
KLMORAN
Sulfate
2.94
mg/L
11/04/2015
LCWILLIA
Total Dissolved Solids
228.0
mg/L
11/11/2015
AJBROWN
Temp
19.7
C
11/02/2015
MDGOINGS
Thallium
<1.0 U
ug/L
11/13/2015
TESTAMERICA
Total Suspended Solids
1.50
mg/L
11/11/2015
AJBROWN
Turbidity
0
NTU
11/02/2015
MDGOINGS
Zinc
<10
ug/L
11/12/2015
KLMORAN
Independent Laboratory Results; "GEL" -GEL Laboratories LLC -Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. -Lab ID# 98001;
"Davis Brown"- Davis & Brown Lab
�ID#21117; "Sheallyy"" Shealy Environmental Services, Inc. - Lab ID# 32010
Analysis Validated: �-
Debra K. Guerry - Supervisor, Analytical Services
Method
EPA 200.7
EPA 200.7
EPA 200.7
EPA 200.7
EPA 300.0
EPA 200.7
EPA 200.7
EPA 200.7
SM2580
EPA 200.7
EPA 200.7
EPA 300.0
SM 2540C
EPA 200.7160 10
SM 2540D
EPA 200.7

One R,venvootl Dnve
/ ^ P.O. Box 2946101
Sal y'� ' lee cooper Monks Corner, SC 29461-2901
[phone]
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34599 Location: GW Well GGSMW-5 Date: 11/03/2015 Sample Collector:
Loc. Code GGSMW-5 Time: 12:09
Analysis
Result QUAL
Units
Test Date
Analyst
Arsenic
11.9
ug/L
11/12/2015
KLMORAN
Arsenic -Dissolved
14.4
ug/L
11/12/2015
KLMORAN
Barium
49,8
ug/L
11/12/2015
KLMORAN
Cadmium
<5
ug/L
11/12/2015
KLMORAN
Chloride
5.48
mg/L
11/06/2015
LCWILLIA
Spec. Cond.
354
us
11/03/2015
MDGOINGS
Chromium
<5
ug/L
11/12/2015
KLMORAN
Copper
<10
ug/L
11/12/2015
KLMORAN
Depth
4.15
Feet
11/03/2015
MDGOINGS
Elevation
4.94
Feet
11/03/2015
MDGOINGS
Iron
4213.1
ug/L
11/12/2015
KLMORAN
Oxidation Reduction Potential
-112 -
my
11/03/2015
MDGOINGS
Lead
<10
ug/L
11/12/2015
KLMORAN
pH
5.66
SU
11/03/2015
MDGOINGS
Selenium
<10
ug/L
11/12/2015
KLMORAN
Sulfate
111
mg/L
11/06/2015
LCWILLIA
Total Dissolved Solids
263.0
mg/L
11/11/2015
AJBROWN
Temp
19.863
C
11/03/2015
MDGOINGS
Thallium
<1.0 U
ug/L
11/13/2015
TESTAMERICA
Total Suspended Solids
<1.0
mg/L
11/11/2015
AJBROWN
Turbidity
0
NTU
11/03/2015
MDGOINGS
Zinc
29.0
ug/L
11/12/2015
KLMORAN
Independent Laboratory Results: "GEL" -GEL Laboratories LLC -Lab ID # 10120; 'Test America" - TestAmerica Laboratories, Inc - Lab ID# 98001;
"DavisBrown"- Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
;�.. �..LZ. ice-- •_% 'SCE .s,u(—�
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical Services
Method
EPA 200.7
EPA 200.7
EPA 200.7
EPA 200.7
EPA 300.0
EPA 200.7
EPA 200.7
EPA 200.7
SM2580
EPA 200.7
EPA 200.7
EPA 300.0
SM 2540C
EPA 200.7 16010
SM 2540D
EPA 200.7

14 santee cooper
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34600 Location: GW Well GGSMW-6 Date: 11/02/2015
Loc. Code GGSMW-6
Time: 15:15
One Rivewood Drive
P.O. Box 2946101
Monks Corner, SC 29461-2901
Sample Collector:
Analysis
Result
QUAL Units
Test Date
Analyst
Arsenic
<10
ug/L
11/12/2015
KLMORAN
Arsenic -Dissolved
<10
ug/L
11/12/2015
KLMORAN
Barium
72.0
ug/L
11/12/2015
KLMORAN
Cadmium
<5
ug/L
11/12/2015
KLMORAN
Chloride
9.43
mg/L
11/04/2015
LCWILLIA
Spec. Cond.
928
us
11/02/2015
MDGOINGS
Chromium
<5
ug/L
11/12/2015
KLMORAN
Copper
<10
ug/L
11/12/2015
KLMORAN
Depth
4.75
Feet
11/02/2015
MDGOINGS
Elevation
3.44
Feet
11/02/2015
MDGOINGS
Iron
4521.7
ug/L
11/12/2015
KLMORAN
Oxidation Reduction Potential
-18
my
11/02/2015
MDGOINGS
Lead
<10
ug/L
11/12/2015
KLMORAN
pH
6.09
SU
11/02/2015
MDGOINGS
Selenium
11.2
ug/L
11/12/2015
KLMORAN
Sulfate
26.8
mg/L
11/04/2015
LCWILLIA
Total Dissolved Solids
651.0
mg/L
11/11/2015
AJBROWN
Temp
21.12
C
11/02/2015
MDGOINGS
Thallium
<1.0
U ug/L
11/13/2015
TESTAMERICA
Total Suspended Solids
3.95
mg/L
11/11/2015
AJBROWN
Turbidity
0
NTU
11/02/2015
MDGOINGS
Zinc
<10
ug/L
11/12/2015
KLMORAN
Independent Laboratory Results: "GEL" - GEL Laboratories LLC - Lab ID # 10120; "Test America' - TestAmerica Laboratories, Inc. - Lab ID# 98001;
"DavisBrown"- Davis & Brown Lab ID # 21117; "Shealy% Shealy Environmental Services, Inc.- Lab ID# 32010
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical Services
Method
EPA 200.7
EPA 200.7
EPA 200.7
EPA 200.7
EPA 300.0
EPA 200.7
EPA 200.7
EPA 200.7
SM2580
EPA 200.7
EPA 200.7
EPA 300.0
SM 2540C
EPA 200.7 / 6010
SM 2540D
EPA 200.7

14pantee cooper
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34601 Location: GW Well GGSMW-9 Date: 11/02/2015
Loc. Code GGSMW-9 Time: 00:00
One R,ve.otl Drive
P.O. Box 2946101
Monks Comer, SC 29461-2901
Sample Collector:
Analysis
Result QUAL
Units
Test Date
Analyst
Arsenic
1241.3
ug/L
11/12/2015
KLMORAN
Arsenic -Dissolved
1077.7
ug/L
11/12/2015
KLMORAN
Barium
49.3
ug/L
11/12/2015
KLMORAN
Cadmium
<5
ug/L
11/12/2015
KLMORAN
Chloride
165
mg/L
11/06/2015
LCWILLIA
Spec. Cord.
1014
us
11/05/2015
MDGOINGS
Chromium
<5
ug/L
11/12/2015
KLMORAN
Copper
<10
ug/L
11/12/2015
KLMORAN
Depth
2.95
Feet
11/05/2015
MDGOINGS
Elevation
5.29
Feet
11/05/2015
MDGOINGS
Iron
16768.3
ug/L
11/1212015
KLMORAN
Oxidation Reduction Potential
78
my
11/05/2015
MDGOINGS
Lead
<10
ug/L
11/12/2015
KLMORAN
pH
5.47
SU
11/05/2015
MDGOINGS
Selenium
<10
ug/L
11/12/2015
KLMORAN
Sulfate
231
mg/L
11/06/2015
LCWILLIA
Total Dissolved Solids
752.0
mg/L
11/11/2015
AJBROWN
Temp
20.91
C
11/05/2015
MDGOINGS
Thallium
<1.0 U
ug/L
11/13/2015
TESTAMERICA
Total Suspended Solids
4.10
mg/L
11/11/2015
AJBROWN
Turbidity
8,7
NTU
11/05/2015
MDGOINGS
Zinc
22.4
ug/L
11112/2015
KLMORAN
Independent Laboratory Results: "GEL" - GEL Laboratories LLC - Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001;
"DavisBrown"- Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
I jr
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical Services
Method
EPA 200.7
EPA 200.7
EPA 200.7
EPA 200.7
EPA 300.0
EPA 200.7
EPA 200.7
EPA 200.7
SM2580
EPA 200.7
EPA 200.7
EPA 300.0
SM 2540C
EPA 200.7 / 6010
SM 2540D
EPA 200.7

One Riveiwood Drive
P.O. Box 2946101
Santee cooper Moncks Gomer, SC 29461-2901
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34603 Location: GW Well GGSMW-11 Date: 11/03/2015 Sample Collector:
Loc. Code GGSMW-11 Time: 13:53
Analysis
Result QUAL
Units
Test Date
Analyst
Method
Arsenic
108.5
ug/L
11/12/2015
KLMORAN
EPA 200.7
Arsenic -Dissolved
43.3
ug/L
11/12/2015
KLMORAN
EPA 200.7
Barium
78.3
ug/L
11/12/2015
KLMORAN
EPA 200.7
Cadmium
<5
ug/L
11/12/2015
KLMORAN
EPA 200.7
Chloride
5.40
mg/L
11/04/2015
LCWILLIA
EPA 300.0
Si
545
us
11/03/2015
MDGOINGS
Chromium
<5
ug/L
11/12/2015
KLMORAN
EPA 200.7
Copper
<10
ug/L
11/12/2015
KLMORAN
EPA 200.7
Depth
4.36
Feet
11/03/2015
MDGOINGS
Elevation
5.27
Feet
11/03/2015
MDGOINGS
Iron
10171.5
ug/L
11/12/2015
KLMORAN
EPA 200.7
Oxidation Reduction Potential
-4
my
11/03/2015
MDGOINGS
SM2580
Lead
<10
ug/L
11/12/2015
KLMORAN
EPA200.7
1
6.24
Su
11/03/2015
MDGOINGS
Selenium
<10
ug/L
11/12/2015
KLMORAN
EPA 200.7
Sulfate
65.2
mg/L
11/04/2015
LCWILLIA
EPA 300.0
Total Dissolved Solids
347.0
mg/L
11/11/2015
AJBROWN
SM 2540C
Temp
19.51
C
11/03/2015
MDGOINGS
Thallium
<1.0 U
ug/L
11/13/2015
TESTAMERICA
EPA 200.7/6010
Total Suspended Solids
16.08
mg/L
11/11/2015
AJBROWN
SM 2540D
Turbidity
20
NTU
11/03/2015
MDGOINGS
Zinc
44.1
ug/L
11/12/2015
KLMORAN
EPA 200.7
Independent Laboratory Results: "GEL" -GEL Laboratories LLC -Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. -Lab ]D#98001;
"DavisBrown"- Davis & Brown Lab ID # 21117; "Shealy°- Shealy Environmental Services, Inc- Lab ID# 32010
Analysis Validated: -
Debra K. Guerry - Supervisor, Analytical Services

14rantee cooper
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34604 Location: GW Well GGSMW-12 Date: 11/03/2015
Loc. Code GGSMW-12 Time: 11:19
One Rivewood Drive
P.O. Box 2946101
Monks Comer, SC 29461-2901
[phone]
Sample Collector:
Analysis
Result QUAL
Units
Test Date
Analyst
Arsenic
40.8
ug/L
11/12/2015
KLMORAN
Arsenic -Dissolved
46.5
ug/L
11/12/2015
KLMORAN
Barium
71.4
ug/L
11/12/2015
KLMORAN
Cadmium
<5
ug/L
11/12/2015
KLMORAN
Chloride
5.73
mg/L
11/04/2015
LCWILLIA
Spec. Cond.
508
us
11/03/2015
MDGOINGS
Chromium
<5
ug/L
11/12/2015
KLMORAN
Copper
<10
ug/L
11/12/2015
KLMORAN
Depth
9,49
Feet
11/03/2015
MDGOINGS
Elevation
5.41
Feet
11/03/2015
MDGOINGS
Iron
14070.7
ug/L
11/12/2015
KLMORAN
Oxidation Reduction Potential
-50
my
11/03/2015
MDGOINGS
Lead
<10
ug/L
11/1212015
KLMORAN
pH
5.89
SU
11/03/2015
MDGOINGS
Selenium
<10
ug/L
1111 2/2 01 5
KLMORAN
Sulfate
138
mg/L
11/09/2015
LCWILLIA
Total Dissolved Solids
435.0
mg/L
11/11/2015
AJBROWN
Temp
21.32
C
1110 3/2 01 5
MDGOINGS
Thallium
<1.0 U
ug/L
11/13/2015
TESTAMERICA
Total Suspended Solids
<1.0
mg/L
11/11/2015
AJBROWN
Turbidity
0.3
NTU
11/03/2015
MDGOINGS
Zinc
<10
ug/L
11/12/2015
KLMORAN
Independent Laboratory Results: "GEL" - GEL Laboratories LLC - Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001;
"DavisBrown"- Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical Services
Method
EPA 200.7
EPA 200.7
EPA 200.7
EPA 200.7
EPA 300.0
EPA 200.7
EPA 200.7
EPA 200.7
SM2580
EPA 200.7
EPA 200.7
EPA 300.0
SM 2540C
EPA 200.7 / 6010
SM 2540D
EPA 200.7

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One Rive vood Drive
P.O. Box 2946101
santee cooper Moneks Comer, SC 29461-2901
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34038 Location:
Loc. Code WAC—LOW
Lower Waccamaw River
Date: 10/26/2015
Time: 11:52
Sample Collector:
CM/EG
Analysis
Result QUAL
Units
Test Date
Analyst
Method
Air Temp
17
C
10/29/2015
CWMOORER
Arsenic
<3.0 U
ug/L
11/09/2015
TESTAMERICA
EPA 200.8
Arsenic - Dissolved
<3.0 u
ug/L
11/09/2015
TESTAMERICA
EPA 200.8
Collection Depth
2.25
m
10/29/2015
CWMOORER
Field Conductivity
59
us
10/29/2015
CWMOORER
Field pH
5.72
Su
10/29/2015
CWMOORER
Flow
4660
as
10/29/2015
CWMOORER
Gauge heigh
11.07
It
10/29/2015
CWMOORER
Oxidation Reduction Potential
205
my
10/29/2015
CWMOORER
SM2580
Weather
2
other
10/29/2015
CWMOORER
Water Temp
17.42
C
10/29/2015
CWMOORER
Independent Laboratory Results: "GEL" - GEL Laboratories LLC - Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001; "DavisBrown"-
Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
Analysis Validated: --�
Debra K. Guerry - Supervisor, Analytical Services

R,r,�} One Rivemood Dnve
Jca,1 1 Lee cooper Morcksx Comer,
I � l 1. cooper Moncks Cornea SC 29461-2901
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34039 Location: GGS Cooling Pond Date: 10/26/2015 Sample Collector: CM/EG
Loc. Code GGS_CP Time: 12:18
Analysis Result QUAL Units Test Date Analyst Method
Air Temp 17 C 10/29/2015 CWMOORER
Arsenic <3.0 U ug/L 11/09/2015 TESTAMERICA EPA 200.8
Arsenic- Dissolved <3.0 U ug/L 11/09/2015 TESTAMERICA EPA200.8
Collection Depth 0.3 m 10/29/2015 CWMOORER
Field Conductivity 58 us 10/29/2015 CWMOORER
Field pH 5.69 SU 10/29/2015 CWMOORER
Gauge heigh underwater ft 10/29/2015 CWMOORER
Oxidation Reduction Potential 201 my 10/29/2015 CWMOORER SM2580
Weather 2 other 10/29/2015 CWMOORER
Water Temp 18.31 C 10/29/2015 CWMOORER
Independent Laboratory Results: "GEL" - GEL Laboratories LLC - Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001; "DavisBrown"-
Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical Services

One Rivenvood Drive
P.
B.
2946101
Santee cooper Mo ks Corner,S
Moncks Corner, SC 29461-2901
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34040 Location:
Loc. Code WAC—OX
Waccamaw River Oxbow
Date: 10/26/2015
Time: 12:42
Sample Collector:
CM/EG
Analysis
Result
QUAL
Units
Test Date
Analyst
Method
Air Temp
17
C
10/29/2015
CWMOORER
Arsenic
<3.0
U
ug/L
11/09/2015
TESTAMERICA
EPA 200.8
Arsenic - Dissolved
<3.0
U
ug/L
11/09/2015
TESTAMERICA
EPA 200.8
Collection Depth
2.4
m
10/29/2015
CWMOORER
Field Conductivity
59
us
10/29/2015
CWMOORER
Field pH
5.45
SU
10/29/2015
CWMOORER
Oxidation Reduction Potential
219
my
10/29/2015
CWMOORER
SM2580
Weather
2
other
10/29/2015
CWMOORER
Water Temp
17.46
C
10/29/2015
CWMOORER
Independent Laboratory Results: "GEL" - GEL Laboratories LLC - Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001; "DavisBrown"-
Davis & Brown Lab ID # 21117; "Shealy'-(rShealy Environmental Services, Inc: Lab ID# 32010
Analysis Validated: -
Debra K. Guerry - Supervisor, Analytical Services

One Riverxood Drive
n^ cooper
P.O. Box 2946101
14psai r� lt`G cooper Monks Corner, 5C 29461-2901
Independent Laboratory Results: "GEL" -GEL Laboratories LLC -Lab ID # 10120;"Test America"-TestAmerica Laboratories, Inc. -Lab ID# 98001; "DavisBrowB"-
Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical Services
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34041 Location:
Ditch beside
HWY 501 off Date: 10/26/2015
Sample Collector:
CM/EG
Loc. Code 501 DITCH
Waccamaw
River
Time: 12:49
Analysis
Result
QUAL Units Test Date
Analyst
Method
Air Temp
17
C 10/29/2015
CWMOORER
Arsenic
<3.0
d ug/L 11/09/2015
TESTAMERICA
EPA 200.8
Arsenic -Dissolved
<3.0
J ug/L 11/09/2015
TESTAMERICA
EPA 200.8
Collection Depth
2.5
On 10/29/2015
CWMOORER
Field Conductivity
63
us 10/29/2015
CWMOORER
Field pH
5.79
Su 10/29/2015
CWMOORER
Gauge heigh
5.9
11 10/29/2015
CWMOORER
Oxidation Reduction Potential
186
my 10/29/2015
CWMOORER
SM2580
Weather
2
other 10/29/2015
CWMOORER
Water Temp
17.36
C 10/29/2015
CWMOORER
Independent Laboratory Results: "GEL" -GEL Laboratories LLC -Lab ID # 10120;"Test America"-TestAmerica Laboratories, Inc. -Lab ID# 98001; "DavisBrowB"-
Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical Services

} One Rivenvood Drive
�antee cooper Moroks Corner,
1
JJC-1 lG IJVVt,Jiil Moncks Corner, SC 29461-2901
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34042 Location: Waccamaw River Monitoring Well Date: 10/26/2015 Sample Collector: CM/EG
Loc. Code WRMW_5 Time: 12:56
Analysis
Result QUAL
Units
Test Date
Analyst
Method
Air Temp
17
C
10/29/2015
CWMOORER
Arsenic
<3.0 U
ug/L
11/09/2015
TESTAMERICA
EPA 200.8
Arsenic -Dissolved
<3.0 U
ug/L
11/09/2015
TESTAMERICA
EPA200.8
Collection Depth
1.7
,m
10/29/2015
CWMOORER
Field Conductivity
58
us
10/29/2015
CWMOORER
Field pH
5.48
SU
10/29/2015
CWMOORER
Flow
4750
cfs
10/29/2015
CWMOORER
Gauge heigh
11.05
It
10/29/2015
CWMOORER
Oxidation Reduction Potential
161
my
10/29/2015
CWMOORER
SM2580
Weather
2
other
10/29/2015
CWMOORER
Water Temp
17.44
C
10/29/2015
CWMOORER
Independent Laboratory Results: "GEL" -GEL Laboratories LLC -Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. -Lab ID# 98001;'DavisBrown"-
Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
Analysis Validated: i.
Debra K. Guerry - Supervisor, Analytical Services

One Rivenvood Drive
(i(1e cooper
P.O. Box 2946101
SanteCOOper Monks Corner, SC 29461-2901
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34043 Location:
Loc. Code WRMW_4R
Waccamaw River Monitoring Well
Date: 10/26/2015
Time: 13:03
Sample Collector:
CM/EG
Analysis
Result
DUAL
Units
Test Date
Analyst
Method
Air Temp
17
C
10/29/2015
CWMOORER
Arsenic
<3.0
U
ug/L
11/09/2015
TESTAMERICA
EPA 200.8
Arsenic -Dissolved
<3.0
U
ug/L
11/09/2015
TESTAMERICA
EPA200.8
Collection Depth
1.7
m
10/29/2015
CWMOORER
Field Conductivity
59
us
10/29/2015
CWMOORER
Field pH
5.33
Su
10/29/2015
CWMOORER
Flow
4750
cfs
10/29/2015
CWMOORER
Gauge heigh
11.05
ft
10/29/2015
CWMOORER
Oxidation Reduction Potential
192
my
10/29/2015
CWMOORER
SM2580
Weather
2
other
10/29/2015
CWMOORER
Water Temp
17.45
C
10/29/2015
CWMOORER
Independent Laboratory Resufts: "GEL" - GEL Laboratories LLC - Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001; "DavisBrown"-
Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
Analysis. Validated: !--
Debra K. Guerry - Supervisor, Analytical Services

One Rivenvood Drive
14pSan e cooper eo Box omen, 1
�11I lCi cooper VV C. Moncks Corner, SC 29461-2901
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34044 Location:
Loc. Code WRMW_3R
Waccamaw River Monitoring Well
Date: 10/26/2015
Time: 13:07
Sample Collector:
CM/EG
Analysis
Result QUAL
Units
Test Date
Analyst
Method
Air Temp
17
C
10/29/2015
CWMOORER
Arsenic
<3.0 U
ug/L
11/09/2015
TESTAMERICA
EPA 200.8
Arsenic -Dissolved
<3.0 Ll
ug/L
11/09/2015
TESTAMERICA
EPA 200.8
Collection Depth
2.7
in
10/29/2015
CWMOORER
Field Conductivity
59
us
10/29/2015
CWMOORER
Field pH
5.31
SU
10/29/2015
CWMOORER
Flow
4750
cfs
10/29/2015
CWMOORER
Gauge heigh
11.05
It
10/29/2015
CWMOORER
Oxidation Reduction Potential
191
my
10/29/2015
CWMOORER
SM2580
Weather
2
other
10/29/2015
CWMOORER
Water Temp
17.45
C
10/29/2015
CWMOORER
Independent Laboratory Results: "GEL' - GEL Laboratories LLC - Lab ID # 10120;'Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001;'DavisBrown"-
Davis & Brown Lab ID # 21117; "Shealy"- Shealy Envvyirro�on"mentall, Services, Inc.- Lab ID# 32010
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical Services

One Rive.... Dwe
Box 2946101
�antee cooper Mo ksCorner,S
Moncks Corner, SC 29461-2901
SANTEE COOPER ANALYTICAL SERVICES
CERTIFICATE OF ANALYSIS
LAB CERTIFICATION #08552
Sample # AD34045 Location:
Loc. Code WAC—UP
Upper Waccamaw River
Date: 10/26/2015
Time: 13:21
Sample Collector:
CM/EG
Analysis
Result QUAL
Units
Test Date
Analyst
Method
Air Temp
17
C
10/29/2015
CWMOORER
Arsenic
<3.0 U
ug/L
11/09/2015
TESTAMERICA
EPA 200.8
Arsenic -Dissolved
<3.0 U
ug/L
11/09/2015
TESTAMERICA
EPA 200.8
Collection Depth
3.40
m
10/29/2015
CWMOORER
Field Conductivity
58
us
10/29/2015
CWMOORER
Field pH
5.29
SU
10/29/2015
CWMOORER
Flow
4940
cis
10/29/2015
CWMOORER
Gauge heigh
11.06
k
10/29/2015
CWMOORER
Oxidation Reduction Potential
213
my
10/29/2015
CWMOORER
SM2580
Weather
2
other
10/29/2015
CWMOORER
Water Temp
17.47
C
10/29/2015
CWMOORER
Independent Laboratory Results: "GEL" - GEL Laboratories LLC -Lab ID # 10120; "Test America" - TestAmerica Laboratories, Inc. - Lab ID# 98001; "DavisBrown"-
Davis & Brown Lab ID # 21117; "Shealy"- Shealy Environmental Services, Inc.- Lab ID# 32010
{jam
—�
Analysis Validated:
Debra K. Guerry - Supervisor, Analytical Services