20070812 Ver 1_07 - Badin Lake Sediment Assessmt Draft_20080502

BADIN LAKE SWIMIPICNIC AREA and BADIN BOAT ACCESS
SEDIMENT ASSESSMENT
Stanly County, North Carolina

1.0 INTRODUCTION
Environmental Services, Inc., (ESI) has been contracted to conduct a sediment study at
the Badin Lake Swim/Picnic Area and Badin Boat Access site in Stanly County, North
Carolina. The assessment was conducted on December 4, 2007.
Badin Lake was formed in 1917 by the construction of the Narrows Dam along the
Yadkin -Pee Dee River at the town of Badin, North Carolina by the minum Company
of America (now known as Alcoa). The ±5,350 acre lake is to hin the Lower
Yadkin Watershed (HUC 03040103) and encompasses ±115 of shoreline. The lake
lies within Stanly and Montgomery Counties, North Caro ' uch of the eastern
shoreline is within the Uwharrie National Forest. Full p or Ba ke is at 541 feet
with a maximum depth of the lake estimated at 190 fe erous b ps and parks
are located along the shoreline of Badin Lake. T a Lake Swim c Area and
Badin Boat Access Site, the focus of this st are located northeast e Alcoa
Smelting Plant and NC 740 Highway in the t ad rt arolina (Fi
Waters within Badin Lake are classified by t e No rolina Depa ment of
Environment and Natural Resources as WS -IV & B (Water, Supply). WS -IV waters are
defined in 15A NCAC 02B.0216 as rce of surface waters ply with a best usage for
drinking, culinary, or food-processin es for those us e a more protective
WS -I, WS -II, or WS -III classification n e and any est usage specified
for Class C waters. In general, pollut fro 'al wa nonpoint source, and
stormwater is not allowed if it would v a ect on human health or
adversely impact the, use as Ovate ply or an er designated use.
Badin Lake ha"
a been as ' ed a classific 'on of B (15A NCAC 02B.0106 and 15A
NCAC 2H.0f24), i h is u ed for freshwate otected for primary recreation which
includes swimming o fre u(nt or grg nizefbasis and all Class C uses. All waters
withi t e t to of North lina m s at least the minimum standards for Class C
water (15A 2B.01 nd 15A NCAC 2B.0200), but the Class B designation
vides an additionlevel tection. Class C uses that would also apply to Badin
include recon recreatio , ishing, and aquatic life including propagation and
suriv 1, and wildlife.
Under the- h CarolinGeneral Statue 143-215.1 and the Memorandum of Agreement
between N aroli and the US Environmental Protection Agency (EPA) outfalls,
including at le o 4) within the study area, have been permitted through the National
Pollutant Dischar e limination System (NPDES) program. The four (4) known outfalls
within the study area are operated by Alcoa-Badin Works under NPDES permit number
NC0004308 for the release of non -contact cooling and make-up waters, condensate, fire
protection water, groundwater, and stormwater.
' http://www.alcoa.conVyadkin/en/home.asp (last accessed on January 2, 2008)
2

2.0 METHODS
Seven (7) stations were chosen for this study (Figure 2). Four (4) stations (SA -1, SA -2,
SA -3, and SA -4) are within the Badin Lake Swim/Picnic Area. Two (2) stations are near
the boat ramp within the Badin Boat Access Site (BR -1 and BR -2). One (1) station was
chosen as a reference station (R-1). The reference station is within a cove approximately
2.75 miles northeast of the six (6) test stations.
Field sampling was conducted in accordance with standard U vironmental Protection
Agency (EPA) sampling protocols for bottom sedime ts. ent samples were
collected and processed at each station via a boat using mite po . At each station a
petite ponar was dropped and retrieved with the resTlt not grab samp eposited into a
stainless steel bowl. The grab sample was mixed sing 'stainless steel sp o s and placed
into laboratory -prepared sample containers. CY station was sampled iplicate,
meaning three (3) independent grab samples collect Triplicate sa was
conducted to provide a measure of sediment cons ' t varity at each statiorr-
-
+ -
In general, water depths at the reference station (R-1) a d boat ramp stations (BR -1 and
BR -2) were from 10 to 15 feet. Wate depths at the Swi rea stations (SA -1, SA -2,
SA -3, and SA -4) were from 5 to 10 diments were n ep and estimated to be
less than two feet in depth.
For quality assurance, decontamination was cion uct d a d field duplicates along with
equipment blanks cted. Sampl' equipmen was decontaminated between
each independe ab sa and each station according to standard EPA protocols.
Duplicate tri sample ere collecte0t Stations R-1 and BR -2 to provide a
measure of precise eat ity) and homogeneity. To provide a measure of accuracy,
equipment blanks to e start of sampling and following the
compl do o sampling ounng ater over decontaminated field equipment
(i.e�t e peti e sam spoons, and bowls) and then filling laboratory prepared
sampling bottles e dist at
Al sa ples were pres rved on i4Vand delivered to a National Environmental Laboratory
Accre it tion Program NELAP) approved laboratory for analysis. The laboratory
analyzed sample the presence of arsenic, barium, cadmium, chromium, iron,
lead, selem yanid amenable, total, and weak acid dissociable), fluoride, mercury,
polychlorinat i nyls (PCBs) (Aroclor 1242, 1248, 1254, and 1260), and
semivolatile orga is compounds (SVOCs) (acenaphthene, acenaphthylene, anthracene,
benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, benozo(g,h,i)perylene,
benzo(k)fluoranthene, chrysene, dibenzo(a,h)anthracene, fluoranthene, fluorene,
indeno(1,2,3-cd)pyrene, naphthalene, phenanthrene, and pyrene).

3.0 RESULTS
Laboratory data sheets are provided as Appendix A. Tables 1 through 4 provide
summaries of the sediment sampling results.
Neither the US Environmental Protection Agency (EPA) nor the North Carolina
Department of Environment and Natural Resources (NCDENR) have developed
regulatory standards for sediments. The EPA has issued Risk aced Concentration
(RBC) values for many of the parameters of interest in this study. BCs are human
health risk assessments based upon quantitative models. Prev' studies at Badin Lake
have utilized the EPA Region III Industrial Soil RBCS a enchmarks for comparing
results. Because the Industrial Soil RBCS have been use as an sment tool in the
past, these values were also used for the present study e Indus ri Soil RBCS are
based on adult occupational exposure for an adult ofker. i It is important to note that the
t2 RBCS are updated on a semi-annual basis (l�ok
tfd on October 11, 20 and that
the Industrial Soil RBCS were substantiallyn Aril 2003 to reflec soil
ingestion rates for outdoor workers. It is also i
an to
that occ ti,
exposure for an outdoor worker is expected to re t than exposure to tie public
that may be utilizing the swim or boat facilities.
The EPA has also issued Freshwater nt Screening Bend arks3 for the majority
of parameters assessed during this studI it enchmarks a easure of ecological
risk assessment used for the evaluation of samp n �t%at Supe fund sites that appraise
the potential effect of a contaminant oni Pts an animals other than people and
domestic pets. Wh ble, a discussign of these va es has been included.
The IndustriCa
BCS d Freshwat Sediment Screening Benchmarks are
assessment toolnot ' nded to be regu tory enforceable numerical standards.
2 http://www.epa.gov/reg3hscd/risk/human/rbc/RBCoctO7.Rdf (last accessed on December 20, 2007)
3 http://www.epa.gov/reg3hscd/risk/eco/btag/sbv/fwsed/screenbench.htm (last accessed on December 20,
2007)
D

Table 1. December 4, 2007 Results for Badin Lake Swim/Picnic Area and Badin Boat Access Sediment Assessment
Parameter
BR -1
BR -2
SA -1
SA -2
SA -3
SA -4
R-1
Min
Max
Average
Min
Max
Average
Min
Max
Average
Min
Max
Average
Min
Max
Average
Min
Max
Average
Min
Max
Average
Metals (mg/kg)
Arsenic
1.6
2.2
1.9
2.0
2.3
2.2
3.5 3.6
3.5
2.5 3.1 2.8
3.4
3.1
2.0
2.2 2.1 3.5
6.3
4.5
Barium
35.0
39.0
36.7
39.0
43.0
40.3
39.0 43.0
41.0
36.0 42.039. 43.0
47.0
44.7
45.0
47.0 46.3 39.0
51.0
43.7
Cadmium
BDL
BDL
n/a
BDL
BDL
n/a
BDL BDL
n/a
BDL BD n/a BDL
BDL
n/a
BDL
BDL n/a BDL
BDL
n/a
Chromium
9
10
9.4
12
14
13
12 14
13
11 12.3 14
15
14.3
13
13 13 14
16
14.7
Iron
8,200
9,000
8,633
12,000
13,000
12,333
16,000 18,000
17,000
13,000 ,000 33 15,000
16,000
15,333
12,000
13,000 12,667 16,000
26,000
19,667
Lead
17
23
19
13
15
13.7
12 14
13
9.1 1.0 8.6
22.0
13.2
12.0
13.0 12.7 5.6
7.6
6.3
Selenium
BDL
BDL
n/a
BDL
BDL
n/a
BDL BDL
n/a
B B L BDL
BDL
n/a
BDL
BDL n/a BDL
BDL
n/a
Mercury
0.035
0.047
0.041
0.033
0.037
0.035
0.027 0.030
0.029
4 .028 0.027 .026
0.027
0.027
0.027
0.029 0.028 BDL
0.028
0.024
Other (mg/kg)
Cyanide, Amenable
BDL
BDL
n/a
BDL
BDL
n/a
BDL BDL n/a L I BDL n/a BDL BDL n/a BDL BDL n/a
Cyanide, Total
BDL
21.0
21.0*
BDL
BDL
n/a
1.8 2.0 1.9 n/a B BDL n/a 2.2 3.0 2.6 BDL BDL n/a
Cyanide, Weak Acid Dissociable
BDL
BDL
n/a
BDL
BDL
n/a
BDL BDL n/a B L n/a Bf5L BDL n/a BDL BDL n/a BDL BDL n/a
Fluoride
BDL
BDL
n/a
BDL
BDL
n/a
BDL BDL n/a BDL DL n/a BDL BDL n/a BDL BDL n/a BDL BDL n/a
PCBs (pg/kg)
Aroclor 1242
1,500
2,400
2,033
BDL
BDL
n/a
BDL BDL 11§hjLa BDL n/a BDL BDL n/a BDL BDL n/a BDL BDL n/a
Aroclor 1248
BDL
BDL
n/a
BDL
BDL
n/a
BDL BDL BDL B11jjhW&4Va BDL BDL n/a BDL BDL n/a BDL BDL n/a
Aroclor 1254
BDL
BDL
n/a
BDL
150
150*
BDL BDL I&nq L BDL n/a BDL BDL n/a 720 880 813 BDL BDL n/a
Aroclor 1260
300
520
433
BDL
BDL
n/a
BDL 89 1 IK9* BD n/a BDL BDL n/a BDL BDL n/a BDL BDL n/a
SVOCs (pg/kg)
Acenaphthene
BDL
BDL
n/a
BDL 230
230*
BD
BDL n BDL DL n/a
BDL
BDL
n/a 1,110 1,900
1,570
BDL
BDL
n/a
Acenaphthylene
BDL
BDL
n/a
BDL BDL
n/a
BDL
L
BDL n/a BDL BDL n/a
BDL
BDL
n/a BDL BDL
n/a
BDL
BDL
n/a
Anthracene
3,200
3,900
3,467
610 890
77
BDL
80 180* BDL BDL n/a
BDL
BDL
n/a 3,100 5,500
4,500
BDL
BDL
n/a
Benzo(a)anthracene
20,000
26,000
22,000
5,400 7,500
6,3 7-L
660
1,000 803 0 660 543
230
270
257 21,000 39,000
31,333
BDL
BDL
n/a
Benzo(a)pyrene
20,000
26,000
22,333
5,400 7,700
6,467
80
1100 903 30 720 603
260
310
290 23,000 42,000
34,333
BDL
BDL
n/a
Benzo(b)fluoranthene
27,000
41,000
32,333
8,500 11,000
9,400
1
33 820 1,200 980
360
480
430 30,000 58,000
48,000
BDL
BDL
n/a
Benzo(g,h,i)perylene
14,000
17,000
15,333
3,800 5,6
0
4
633
47
850
1
360 590 460
BDL
200
200* 16,000 29,000
23,333
BDL
BDL
n/a
Benzo(k)fluoranthene
14,000
19,000
16,000
4,100 65
0
5,1
0
510
760 647 340 470 400
BDL
210
195* 12,000 21,000
16,333
BDL
BDL
n/a
Chrysene
20,000
28,000
23,333
5,400
7,300
6,333
20
1,1
0 803 490 720 597
220
280
253 21,000 37,000
30,667
BDL
BDL
n/a
Dibenzo (a,h) anthracene
5,000
6,000
5,400
1,400
'2,.100
1,733
DL
270* BDL BDL n/a
BDL
BDL
n/a BDL BDL
n/a
BDL
BDL
n/a
Fluoranthene
29,000
38,000
32,333
6,900
0
8,433
50
1, 1,183 600 920 743
280
320
300 30,000 53,000
43,667
BDL
BDL
n/a
Fluorene
BDL
BDL
n/a
BDL n
n/a
IDL n/a BDL BDL n/a
BDL
BDL
n/a BDL 1,600
1,500*
BDL
BDL
n/a
Indeno (1,2,3 -cd) pyrene
14,000
17,000
15,667
4,000 6,56
5,233
420
870 640 350 590 453
BDL
190
190* 17,000 33,000
25,667
BDL
BDL
n/a
Napthalene
BDL
BDL
n/a
BDL BDL
a
B
BDL n/a BDL BDL n/a
BDL
BDL
n/a BDL BDL
n/a
BDL
BDL
n/a
Phenanthrene
9,500
12,000
10,433
2,000 2,900
7q70
570 480 210 340 277
BDL
BDL
n/a 10,000 19,000
15,000
BDL
BDL
n/a
Pyrene
22,000
29,000
24,667
5,500 7,200
6,
90
1,100 893 540 720 617
260
300
280 23,000 39,000
32,667
BDL
BDL
n/a
BDL: below detection limit (the detection limit is based upon a function of the dry weight of the sed' sample and therefore varies)
n/a: not applicable
*Average values were determined using only values found above the detection limit
7

Table 2. EPA Region III Industrial Soil Risk Base Concentration (RBC) and Freshwater Sediment Screening Benchmark (FSSB) Exceedances for Badin Lake Swim/Picnic Area and Badin Boat Access Sediment Assessment
Parameter
EPA Region
III Industrial
Soil RPC
FreshwaterT
Sediment
Screening
Benchmark
BR -1
BR -2
SA -1
SA -2
SA -3
SA -4
R-1
RBC
Exceeded
(yes/no)
FSSB
Exceeded
(yes/no)
RBC
Exceeded
(yes/no)
FSSB
Exceeded
(yes/no)
RBC
Exceeded
(yes/no)
FSSB
Exceeded
(yes/no)
RBC
Exceeded
(yes/no)
FSSB
Exceeded
(yes/no)
RBC
Exceeded
(yes/no)
FSSB
Exceeded
(yes/no)
RBC
Exceeded
(yes/no)
FSSB
Exceeded
(yes/no)
RBC
Exceeded
(yes/no)
FSSB
Exceeded
(yes/no)
Metals (mg/kg)
Arsenic
1.9
9.8
Yes
No
Yes
No
Yes
No
No
Yes
No
Yes
No Yes
No
Barium
200,000
n/a
No
n/a
No
n/a
No
n/a
No
n/a
No
n/a
No
n/a No
n/a
Cadmium
510
0.99
No
No
No
No
No
No
I No
No
No
No
No
No No
No
Chromium
3,100
43.4
No
No
No
No
No
No
No
No
No
No
No
No No
No
Iron
720,000
20,000
No
No
No
No
No
No
o
No
No
No
No
No No
Yes
Lead
n/a
35.8
n/a
No
n/a
No
n/a
o
n a
No
n/a
No
n/a
No n/a
No
Selenium
5,100
2
No
No
No
No
No
7of
No
No
No
No
No
No No
No
Mercury
n/a
0.18
n/a
No
n/a
No
n/a
No
n/a
No
n/a
No
n/a
No n/a
No
Other (mg/kg)
Cyanide, Amenable
n/a
n/a
n/a
n/a
n/a n/a n/a
n/a
n/a a7 n/a n/a n/a n/a n/a n/a
Cyanide, Total
n/a
n/a
n/a
n/a
n/a n/a n/an/a
n/a a n/a n/a n/a n/a n/a n/a
Cyanide, Weak Acid Dissociable
n/a
n/a
n/a
n/a
n/a n/a n/a
a
n/a n/a n/a n/a n/a n/a n/a n/a
Fluoride
n/a
n/a
n/a
n/a
n/a n/a n/a
a
n/a n/a n/a n/a n/a n/a n/a n/a
PCBs (pg/kg)
Aroclor 1242
1,400
59.8
(total PCB)
Yes
Yes
No
No
Yes No I
No
No
Yes
No
No
No
No
No
Yes
No
No
Aroclor 1248
1,400
No
No
°
No
No
No
Aroclor 1254
11400
No
No
No
No
No
Aroclor 1260
1,400L.,No
o
No
No
No
No
No
SVOCs (pg/kg)
L 4—
Acenaphthene
61,000,000
6.7
No No Yes
N
No
No No
No No
Yes
No
No
Acenaphthylene
n/a
5.9
n/a No /a o
No
n/a
No n/a
No n/a
No
n/a
No
Anthracene
310,000,000
57.2
No Yes o es N
Yes
No
No No
No No
Yes
No
No
Benzo(a)anthracene
39,000
108
No Yes es No
Yes
No
Yes No
Yes No*
Yes
No
No
Benzo(a)pyrene
39,000
150
No Yes No
Yes
No
Yes No
Yes Yes
Yes
No
No
Benzo(b)fluoranthene
39,000
27.2
Yes Y No
Yes
No
Yes No
Yes Yes
Yes
No
No
Benzo(g,h,i)perylene
n/a
170
n/a n/a Yes a
Yes
n/a
Yes n/a
Yes n/a
Yes
n/a
No
Benzo(k)fluoranthene
39,000
240
No Yes es No
Yes
No
Yes No
No No
Yes
No
No
Chrysene
390,000
166
No Yes No
Yes
No
Yes No
Yes No
Yes
No
No
Dibenzo (a,h) anthracene
39,000
33
N Yes No
Yes
No
No No
No No
No
No
No
Fluoranthene
41,000,000
423
No Yes No Y No
Yes
No
Yes No
No No
Yes
No
No
Fluorene
41,000,000
77.4
No No o No
No
No
No No
No No
Yes
No
No
Indeno (1,2,3 -cd) pyrene
39,000
17
No 1W No W Yes No
Yes
No
Yes No
Yes No
Yes
No
No
Napthalene
20,000,000
176
No NOqjjk No Ar No No
No
No
No No
No No
No
No
No
Phenanthrene
n/a
204
n/a Yes im 11/w Yes n/a
Yes
n/a
Yes n/a
No n/a
Yes
n/a
No
Pyrene
31,000,000
195
No Yes 7gubw Yes No
Yes
No
Yes No
Yes No
Yes
No
No
n/a: not applicable
*The RBC was reached for one sub -sample but not exceeded.

Table 3: QAQC comparison of duplicate samples collected at stations BR -2 and R-1.
Parameter
R-1
R-1 duplicate
Percent
Difference*
BR -2
BR -2 duplicate
Percent
Difference*
Min Max Average
Min Max Average
Min Max Average
Min Max Average
Metals (mg/kg)
Arsenic
3.5
6.3
4.5
4.1
4.7
4.3 3.7 2.0 2.3
2.2 2.1
2.4 2.2
1.5
Barium
39.0
51.0
43.7
38.0
43.0
40.3 7.6 39.0 43.0
40.3 38.0
42.0 40.0
0.8
Cadmium
BDL
BDL
n/a
BDL
BDL
n/a n/a BDL BDL
n/a BDL
BDL n/a
n/a
Chromium
14
16
14.7
13.0
14.0
13.7 6.8 1 14.0
13.0 13.0
14.0 13.3
2.6
Iron CN
16,000
26,000
19,667
17,000
20,000
18,333 6.8 JAMO 13,000
12,333 12,000
13,000 12,333
0
Lead
5.6
7.6
6.3
5.2
6.0
5.6 11.1 .0 15.0
13.7 12.0
14.0 13.0
4.9
Selenium
BDL
BDL
n/a
BDL
BDL
n/a n/a IM, BDL
n/a BDL
BDL n/a
n/a
Mercury
BDL
0.028
0.024**
0.019
0.021
0.020 15.3 O.OqjM, 0.037
0.035 0.031
0.034 0.033
4.8
Other (mg/kg)
Cyanide, Amenable
BDL
BDL
n/a
BDL
BDL n/a BDL BDL n/a BDL BDL n/a n/a
Cyanide, Total
BDL
BDL
n/a
BDL
BDL n/a a BDL DL n/a BDL BDL n/a n/a
Cyanide, Weak Acid Dissociable
BDL
BDL
n/a
BDL
BDL n/a n/a BDL n/a BDL BDL n/a n/a
Fluoride
BDL
BDL
n/a
BDL
BDL n/a a BDL n/a BDL BDL n/a n/a
PCBs (pg/kg)
Aroclor 1242
BDL
BDL
n/a
BDL
BDL n/a L BDL n/a BDL BDL n/a n/a
Aroclor 1248
BDL
BDL
n/a
BDL
BDL n/a n/a BDL BDL n/a BDL BDL n/a n/a
Aroclor 1254
BDL
BDL
n/a
BDL
BDL a n/a BDL 150 150** 170 210 193 28.9
Aroclor 1260
BDL
BDL
n/a
BDL
BDL n/a DL BDL n/a BDL 120** 120 100
SVOCs (pg/kg)
Acenaphthene
BDL
BDL
n/a
BDL BDL n
230
230**
BDL
BDL
n/a
100
Acenaphthylene
BDL
BDL
n/a
BDL BDL I 4SDL
BDL
n/a
BDL
BDL
n/a
n/a
Anthracene
BDL
BDL
n/a
BDL BDL 1 n/a 610
890
777
250
630
473
39.1
Benzo(a)anthracene
BDL
BDL
n/a
BDL B L
I n/a 5,400
7,500
6,367
1,800
4,800
3,533
44.5
Benzo(a)pyrene
BDL
BDL
n/a
BDL BD
n/a n/a 5,400
7,700
6,467
1,900
4,900
3,767
41.8
Benzo(b)fluoranthene
BDL
BDL
n/a
BDL
BDL n/a IL n/a 8,500
11,000
9,400
3,000
7,400
5,800
38.3
Benzo(g,h,i)perylene
BDL
BDL
n/a
BDL-
BDL n/a a 3,800
5,600
4,633
1,300
3,500
2,667
42.4
Benzo(k)fluoranthene
BDL
BDL
n/a
BDL
B DL n/an/a 4,100
6,500
5,100
1,400
4,800
3,333
34.6
Chrysene
BDL
BDL
n/a
BDL
n/a 5,400
7,300
6,333
1,900
5,100
3,767
40.5
Dibenzo(a,h)anthracene
BDL
BDL
n/a
Ekhl,
I B T
n
n/a 1,400
2,100
1,733
480
1,300
993
42.7
Fluoranthene
BDL
BDL
n/a
BDL1
BDL
n/a n/a 6,900
10,000
8,433
2,500
6,300
4,800
43.1
Fluorene
BDL
BDL
n/a
BDL
BDL
n/a n/a BDL
BDL
n/a
BDL
BDL
n/a
n/a
Indeno(1,2,3-cd)pyrene
BDL
BDL
n/a
BDL
L
n/a n/a 4,000
6,500
5,233
1,300
3,700
2,767
47.1
Napthalene
BDL
BDL
n/a
BDL
UT
DL
n/a n/a BDL
BDL
n/a
BDL
BDL
n/a
n/a
Phenanthrene
BDL
BDL
n/a
BDL RDL- n/a n/a 2,000
2,900
2,467
710
1,900
1,403
43.1
Pyrene
BDL
BDL
n/a
L RDL n/a n/a 5,500
7,200
6,300
1,900
5,100
3,767
40.2
BDL: below detection limit (the detection limit is based upon a function of the dry weight oediment sample and therefore varies)
n/a: not applicable
*Calculation performed on average values
**Average values were determined using only values found above the detection limit
L

Table 4. QAQC comparison of Equipment Blank Results
Parameter
EB -1
EB -2
Laboratory Reported Value QAQC Pass/Fail
Labor Reported Value QAQC Pass/Fail
Metals
Arsenic
BDL
Pass BDL
Pass
Barium
BDL
Pass BDL
Pass
Cadmium
BDL
Pass BDL
Pass
Chromium
BDL
Pass L
Pass
Iron CN
BDL
Pass
Pass
Lead
BDL
Passar
Pass
Selenium
BDL
P BDL
Pass
Mercury
BDL
BDL
Pass
Other
Cyanide, Amenable
BDL
Pass BDL Pass
Cyanide, Free
BDL
Pass BDL Pass
4e
Cyanide, Total
BDL
Pass BDL Pass
Cyanide, Weak Acid Dissociable
BDL
Pass BDL Pass
Fluoride
BDL
ass BDL Pass
PCBs
Aroclor 1242
BDL
IL Pa BDL Pass
Aroclor 1248
BDL
lk P BDL Pass
Aroclor 1254
B L
ss mrBDL Pass
Aroclor 1260
BOL
Pass BDL Pass
SVOCs
Acenaphthene
BDL
s
BDL Pass
Acenaphthylene
BDL
1w
BDL Pass
Anthracene
B
L
ss
BDL Pass
Benzo(a)anthracene
BDL
Pass
BDL Pass
Benzo(a)pyrene
BDL
Pass
BDL Pass
Benzo(b)fluoranthene
DL
Pass
BDL Pass
Benzo(g,h,i)perylene
L
Pass
BDL Pass
Benzo(k)fluoranthene
BPL—
Pass
BDL Pass
Chrysene
B L
-
Pass
BDL Pass
Dibenzo(a,h)anthracene
BDL --Pass
BDL Pass
Fluoranthene
BD
Pass
BDL Pass
Fluorene
BDL—
Pass
BDL Pass
Indeno(1,2,3-cd)pyrene
L
Pass
BDL Pass
Napthalene
DL
Pass
BDL Pass
Phenanthrene
BDL
Pass
BDL Pass
Pyrene
BDL
Pass
BDL Pass
10

Metals
Arsenic
Arsenic was detected at each station, including the reference station, indicating that it may be ubiquitous
throughout the Badin Lake system. Arsenic values were above the Industrial Soil RBC (1.9 mg/kg) but
below the Freshwater Sediment Screening Benchmark (9.8 mg/kg) at all of the stations.
Barium
Barium was detected at each station, including the reference station.um values at all stations were
�
below the Industrial Soil RBC (200,000 mg/kg). There is no water Sediment Screening
Benchmark for Barium. ++
Cadmium �
I f
Cadmium was not detected at any station. +4-,
Chromium
Chromium was detected at each station, including the refs
the Industrial Soil RBC (3,100 mg/kg) and the Freshwater
at all stations.
Iron
Iron was detected at each station, including thereferenc s z
Soil RBC (720,000 mg/kg) at all stations. TheLressh ate
mg/kg) was not exceededany station except for 0
7 of the
Lead
Lead was detected ?ea9c
for lead. The Freshwater
any station.
Seleni
Selejl
ion. +Chromium values were below
Screening Benchmark (43.4 mg/kg)
o Iron values were below the Industrial
S d m nt Screening Benchmark (20,000
zb- mples for the reference station (R-1).
P, station. There is not an Industrial Soil RBC
rk for lead (35.8 mg/kg) was not surpassed at
not detected
Mercury
Mercury was d at each tion, including the reference station. There is not an Industrial Soil
RBC for mercury. Fres ter Sediment Screening Benchmark for mercury (0.18 mg/kg) was not
surpassed at any stati
Other
Cyanide Series
Levels of Amenable Cyanide and Weak Acid Dissociable Cyanide were not detected at any station
during this study. Detectable levels of Total Cyanide were discovered at stations BR -1, SA -1, and SA -
4. There are not Industrial Soil RBCS or Freshwater Sediment Screening Benchmarks for the cyanide
series.
11

Fluoride
Fluoride was not detected at any station.
Polychlorinated biphenyls (PCBs)
Aroclor Series
Aroclor 1242 was detected at station BR -1 and found above the Indus
Aroclor 1248 was not detected at any station. Aroclor 1254 was detecte
these values were below the Industrial Soil RBC (1,400 pg/kg). Ar
BR -2 (within one of the duplicate sub -samples) and SA -1, but th
Soil RBC (1,400 pg/kg). The Freshwater Sediment Screening nchn
based upon the total concentration of PCBs found. Based up e tal c
at each station, determined by adding the detected concen on f Aroi
1, and SA -4 have PCBs concentrations above the Fresh r Sediment Sc
Semivolatile Organic Compounds (SVOCs)
Acenaphthene
Acenaphthene was detected at stations 1311
was not surpassed at any station. The F
exceeded at both stations (BR -2 and SA -4).
Acenaphthylene
Acenaphthylene was not
Anthracene
Anthracene was detecte a
(310,000,000 pg/kg) was not
(57.2 pg/kg) x ee ed at
Benzo(ahnthracene
Soil RBCS
SA -4 reach(
surpassed at
SA -4).
oil RBC (1,400 pg/kg).
FM%ps BR -2 and SA -4, but
1260 was detected at BR -1,
were below the Industrial
r PCBs (59.8 pg/kg) is
is ion of PCBs detected
�r, st BR -1, BR -2, SA -
Soil RBC (61,000,000 pg/kg)
...�lchmark (6.7 p g/kg) was
BR-2,rhe
1, and SA -4. The Industrial Soil RBC
station Freshwater Sediment Screening Benchmark
041 BR -2, SA -1, and SA -4).
at all 'ohle stations except the reference station (R-1). The Industrial
exceeded at any station, but one of the triplicate sub -samples at station
The Freshwater Sediment Screening Benchmark (108 pg/kg) was
enzo(a)anthracene was detected (BR -1, BR -2, SA -1, SA -2, SA -3, and
Benzo(a)pyrene
Benzo(a)pyrene was detected at all of the stations except the reference station (R-1). The Industrial Soil
RBC (39,000 pg/kg) was exceeded at station SA -4. The Freshwater Sediment Screening Benchmark
(150 pg/kg) was surpassed at each station where Benzo(a)pyrene was detected (BR -1, BR -2, SA -1, SA -
2, SA -3, and SA -4).
Benzo(b)fluoranthene
12

Benzo(b)fluoranthene was detected at all of the stations except the reference station (R-1). The
Industrial Soil RBC (39,000 pg/kg) was exceeded at stations BR -1 and SA -4. The Freshwater Sediment
Screening Benchmark (27.2 pg/kg) was surpassed at each station where Benzo(b)fluoranthene was
detected (BR -1, BR -2, SA -1, SA -2, SA -3, and SA -4).
Benzo(g,h, i)perylene
Benzo(g,h,i)perylene was detected at all of the stations except the reference station (R-1). There is not
an Industrial Soil RBC for Benzo(g,h,i)perylene. The Freshwater Sediment creening Benchmark (170
pg/kg) was surpassed at each station where Benzo(g,h,i)perylene was detect d (BR -1, BR -2, SA -1, SA -
2, SA -3, and SA -4).
Benzo(k)fluoranthene
Benzo(k)fluoranthene was detected at all of the stations x�ep the refere c station (R-1). The
Industrial Soil RBC (39,000 pg/kg) was not surpassed a any station. The�F eshwater Sediment
Screening Benchmark (240 pg/kg) was surpassed at stat s BR -1, BR -2, SA -1, S� d SA -4 but not
station SA -3. t 4—�
Chrysene
Chrysene was detected at all of the stations except the refere�Cs
(390,000 pg/kg) was not surpassed at any s n. The Freshwate
pg/kg) was surpassed at each station where was detected
SA -4).
(R-1). The Industrial Soil RBC
hent Screening Benchmark (166
fh BR -2, SA -1, SA -2, SA -3, and
Dibenzo(a,h)anthracene +
Dibenzo(a,h)anthracene w d at stations 1, BR -2 d SA -1. The Industrial Soil RBC
(39,000 pg/kg) was not passe y station. re Freshwater Sediment Screening Benchmark (33
pg/kg) was surpassed of then ree (3) station (BR -1, BR -2, and SA -1).
��
Fluoranthene
Fluoranthene ed at he sta pt the reference station (R-1). The Industrial Soil
RBC (41,OR,700 as n passed at any station. The Freshwater Sediment Screening
Bench (423 pg/kg) rpas st ions BR -1, BR -2, SA -1, SA -2, and SA -4 but not station
SA-
Fluorene
Fluorene was d at onl ation SA -4. The Industrial Soil RBC (41,000,000 pg/kg) was not
surpassed. The Fr ter Se ent Screening Benchmark (77.4 pg/kg) was surpassed at station SA -4.
Indeno(1, 2, 3-cd)pyrene
Indeno(1,2,3-cd)pyren as detected at all of the stations except the reference station (R-1). The
Industrial Soil RBC (39,000 pg/kg) was not surpassed at any station. The Freshwater Sediment
Screening Benchmark (17 pg/kg) was surpassed at each station where Indeno(1,2,3-cd)pyrene was
detected (BR -1, BR -2, SA -1, SA -2, SA -3, and SA -4).
Napthalene
Napthalene was not detected at any station.
13

Phenanthrene
Phenanthrene was detected at stations BR -1, BR -2, SA -1, SA -2, and SA -4. There is not an Industrial
Soil RBC for Phenanthrene. The Freshwater Sediment Screening Benchmark (204 µg/kg) was
surpassed at each station where Phenanthrene was detected (BR -1, BR -2, SA -1, SA -2, and SA -4).
Pyrene
Pyrene was detected at all of the stations except the reference station (R- The Industrial Soil RBC
(310,000,000 pg/kg) was not surpassed at any station. The Freshwater Screening Benchmark
(195 pg/kg) was surpassed at each station where Pyrene was detecte -1, BR -2, SA -1, SA -2, SA -3,
and SA -4).
Quality Assurance / Quality Control (OAOC)
Field Duplicates 4?^
Field duplicates were collected at stations R-1 aqj RR .2. Field duplicates pro easure of
precision (repeatability) and of homogeneity for th� rarneters to during this st A percent
difference calculation was performed on each triplicate average val e. If the ca culated percent
difference value was found to be fifteen percent or less, than that parameter was determined to be evenly
distributed throughout the sediment. If te� ercent difference calculation was greater than fifteen
percent, then the parameter was determined'to e evenly distributed throughout the sediment. The
percent difference calculations indicate that PCBs an _ VOCs are not eveay distributed throughout the
sediment. This means the sediments do not show hom eity and duplicate studies conducted at the
same relative geographic locations may not repeat the e result
Equipment Blanks
Equipment Blanks w ken pri collecting t first sample at station R-1 and following the
collection of the last camp t SA -4. quipment Blan rovide a measure of accuracy and ensure that
the field equipment were n t e c in o t minan�t and were adequately decontaminated between
sampling stator�s. Nlor}e of the eters o i t were detected within either Equipment Blank.
14

4.0 SUMMARY
The results indicate the presence of several contaminants within the sediments of the Badin Lake
Swim/Picnic Area and Badin Boat Access Site that where not found at the reference station. Most
notably, no PCBs or SVOCs were detected at the reference station, but they were detected within the
study area. Additionally, Total Cyanide was detected within the study area but not the reference station.
With regards to human health risks, the Industrial Soil RBCS were exceededLfoor arsenic, PCBs (Aroclor
1242), and SVOCs (benzo(b)fluoranthene and benzo(a)pyrene). Beca*ii se' arsenic was found at the
reference station and within the study area at concentrations higher than the Industrial Soil RBC, one
can assume that the risk to human health for contact with this p s the same throughout the
Badin Lake system. Due to the fact that PCBs (Aroclor 1242) SVO enzo(b)fluoranthene and
benzo(a)pyrene) were not detected at the reference station but Ithe were dee d above the Industrial
Soil RBCS within the study area, there is a higher degre" human exposure r s when at the Badin
Lake Swim/Picnic Area and Badin Boat Access Site. L
Similarly, assessing ecological risks utilizing the Fresh Sedi
exceedances for PCBs and numerous SVOCs (Acenapt e e,
Benzo(a)pyrene, Benzo(b)fluoranthene, Benzo(g,h,i)peryle e
Dibenzo(a,h)anthracene, Fluoranthene, Fl e, Indeno(1,2,3-c
within the Badin Lake Swim/Picnic Area an Boat Access S
not detected at the reference station, it can besir at there is
plants and animals other than people and domestic pets�a s ci ted
Lake Swim/Picnic Area and Badin Boat Access S te.
15
m t Screening Benchmarks showed
Anthracene, Benzo(a)anthracene,
Benzo(k)fluoranthene, Chrysene,
�yrene, Phenanthrene, and Pyrene)
ecause these parameters were
a h' degree of ecological risk to
with sediment contact at the Badin

APPENDIX A
Laboratory Data Sheets
16