EDEIN NORTH CAROLINA COAL ASH SPILL
SURFACE WATER RESULTS
NOTE: The data below represents surface water samples that were collected on Feb 15, 2014 by
EPA START (Team 1) sampling teams. Water sample measurements are in milligrams per liter
(mg/L) and/or micrograms per liter (|a,g/L) for these samples. The data is being compared to EPA
ecological risk screening levels (ERSLs) to protect aquatic life in the surface water of the Dan
River. Specific qualifiers and footnotes are listed below the summary table. These samples were
collected at various locations along the river (refer to map for generalized locations). The detected
concentrations in surface water are above the EPA ERSLs for arsenic, aluminum, copper, iron,
lead, manganese, and zinc for total metals. EPA typically screens the surface water concentrations
using total metals samples because this is a conservative practice for screening. Because
aluminum, copper, iron, lead and zinc were not detected in any of the samples of the dissolved
fraction of surface water (i.e., samples that were filtered to remove particulates), they present no
threat of toxicity to aquatic organisms. Arsenic and manganese continue to be detected above the
EPA ERSLs in the dissolved metals analysis. When chemical concentrations exceed the screening
values it doesn't mean there will be adverse health or ecological effects, but recommends further
investigation may be needed.
Analyte
Ecological Screening
Standard for Surface
Water Samples1
Duke Outfall A
(near DRSS Boat
Ramp)
Sample Information
Sample ID
EDEN-OUTFL-A-SW-
20140215
Date
-
2/15/2014
Time
-
1000
Status
-
Validation Complete
Type
Surface Water
Water Quality Monitoring
Temperature
-
4.88
°C
Dissolved Oxygen
<6
mg/L
12
mg/L
Specific Conductance
-
0.33
mS/cm
pH
6.5-9.0
std
7.01
std
Turbidity
50
NTU
220
NTU
Dissolved metals
SW6010C/6020A/74
[70 A
Aluminum
87
jig/L
18.0J+
jig/L
Antimony
5.6
jig/L
5.00U
jig/L
Arsenic
10
jig/L
15.2
jig/L
Barium
220
jig/L
61.9
jig/L
Beryllium
0.66
jig/L
1.00U
jig/L
Boron
0.36
mg/L
0.281J+
mg/L
Cadmium
0.1
jig/L
0.700U
jig/L
Calcium
-
-
45,600
jig/L
Chromium
25
jig/L
2.50U
jig/L
Cobalt
3
jig/L
1.50J
jig/L
Copper
3
jig/L
2.00U
jig/L
Iron
1,000
jig/L
100U
jig/L
Lead
0.59
jig/L
1.00U
jig/L
Magnesium
-
-
6,310
jig/L
Manganese
200
jig/L
307
jig/L
Mercury
0.000012
mg/L
0.00020U
mg/L
Molybdenum
800
jig/L
9.61
jig/L
Nickel
17
jig/L
5.00U
jig/L
Potassium
53,000
jig/L
5,510
jig/L
Selenium
5
f-ig/L
5.00U
f-ig/L
Silica
-
-
3.14
mg/L
Silver
0.06
jig/L
1.00U
jig/L
Sodium
680,000
jig/L
8,450
jig/L
Thallium
0.24
jig/L
0.200U
jig/L
Vanadium
27
jig/L
5.00U
jig/L
Zinc
39
jig/L
42.8U
jig/L
&EPA
United States
Environmental Protection
Agency
lof 3
Eden North Carolina Coal Ash Spill
-------
EDEIN NORTH CAROLINA COAL ASH SPILL
SURFACE WATER RESULTS
Ecological Screening
Duke Outfall A
Analyte
Standard for Surface
(near DRSS Boat
Water Samples1
Ramp)
Sample Information
Sample ID
EDEN-OUTFL-A-SW-
20140215
Total Dissolved Solids
EPA 160.1
Total Dissolved Solids
-
-
327J+
mg/L
Total Suspended Solids
EPA 160.2
Total Suspended Solids
-
-
97.5
mg/L
Total Metals
SW6010C/6020A/74
[70 A
Aluminum
2,000
pg/L
4,850
pg/L
Antimony
5.6
pg/L
5.00U
pg/L
Arsenic
10
pg/L
33.2
pg/L
Barium
220
pg/L
97.9
pg/L
Beryllium
0.66
pg/L
0.454J
pg/L
Boron
0.36
mg/L
0.297J+
mg/L
Cadmium
2
pg/L
0.315J
pg/L
Calcium
-
-
46,800
pg/L
Chromium
29
pg/L
13.2
pg/L
Cobalt
24
pg/L
4.29J
pg/L
Copper
3
pg/L
10.6
pg/L
Iron
2,300
pg/L
8,420
pg/L
Lead
0.6
pg/L
9.32
pg/L
Magnesium
-
-
7,730
pg/L
Manganese
200
pg/L
398
pg/L
Mercury
0.000012
mg/L
0.00020U
mg/L
Molybdenum
-
-
8.65
pg/L
Nickel
17
pg/L
10.3
pg/L
Potassium
53,000
pg/L
6550
pg/L
Selenium
5
pg/L
5.00U
pg/L
Silica
-
-
10.6
mg/L
Silver
0.06
pg/L
0.0212J
pg/L
Sodium
680,000
pg/L
8,790
pg/L
Thallium
0.24
pg/L
0.100J
pg/L
Vanadium
27
pg/L
11.5
pg/L
Zinc
39
pg/L
167J+
pg/L
£% United States
Environmental Protection
IhI m %. Agency
2 of 3
Eden North Carolina Coal Ash Spill
-------
EDEIN NORTH CAROLINA COAL ASH SPILL
SURFACE WATER RESULTS
Analyte
Ecological Screening
Standard for Surface
Water Samples1
Duke Outfall A
(near DRSS Boat
Ramp)
Sample Information
Sample ID
EDEN-OUTFL-A-SW-
20140215
Anions
SW9056A
Bromide
-
-
0.370J
mg/L
Chloride
230
mg/L
61
mg/L
Sulfate
-
-
57
mg/L
Wet Chemistry
EPA
310.2/SM2340B/SW9040
C/SW9060A
Alkalinity, Total (As CaC03)
-
-
37.2
mg/L
Hardness, Calcium/Magnesium (As CaC03)
-
-
149
mg/L
Organic Carbon, Dissolved
-
-
3.16J+
mg/L
pH
6.5-9.0
std
7.00J
std
Notes
Value obtained from the GL Tier 2 Values; National
Recommended Water Quality Criteria; Suter and Tsao
(1996); Reference condition for EcoRegion XI
(25 percentile); NCDENR State Standards for surface
water
°C degrees Celsius
EPA U.S. Environmental Protection Agency
J Value is estimated
J+ Value is estimated with a possible high bias
(ig/L micrograms per liter
mg/L milligrams per liter
mS/cm milliSiemens per centimeter
NTU Nephelometric turbidity units
std standard
U Analyte was not detected at the listed reporting limit.
£% United States
Environmental Protection
IhI m %. Agency
3 of 3
Eden North Carolina Coal Ash Spill
-------
Duke Outfall A
Penhook
(Gretna
Chatham
Ook
Level
Slate Park
p.'Ill a
Height
9f)Bw
977m
Mliliri:,, ill o
% Chime®!
H oree?
Failure
Sandy
Level
IRGJNJA pa I KIC K.< ' >Utm
Mayo JRiyer
State J^Srk
it ate'Pai_vi'
Havv,R
------- |