South DeKalb, GA NATTS Network Assessment Review
• Established 2003: Carbonyls, PMio Metals, and VOCs
o Chromium VI added in 2005; ended in in 2013
o PAHs added in 2007
• For the NATTS Network Assessment (2003-2018):
o 2 of 18 Method Quality Objective (MQO) Core HAPs were included in the national trends
¦ Benzene. 1.3-Butadiene. Chloroform, and Vinyl Chloride: Data for 2013 invalidated.
¦ Beryllium (PMm). Cadmium (PMm). Lead (PMm). Manganese (PMm). and Nickel (PMm):
Completeness less than 75% in 2013.
¦ Acetaldehvde and Formaldehyde: Completeness less than 75% in 2016; invalidated data in 2013,
2014, and 2015.
¦ Arsenic (PMm): High MDLs in 2014 and 2016.
¦ Carbon Tetrachloride: Data for 2013 invalidated and Proficiency Test percent difference results
were ±35%.
¦ Chromium VI: Completeness was less than 75% in 2007 and 2008.
¦ Tetrachloroethvlene and Trichloroethvlene: Data for 2013 invalidated and analytical precision
data missing in 2015 (tetrachlorethylene) and 2018 (trichloroethylene).
o 202 of 270 pollutant datasets were suitable for trends analysis
o Annual Average and 3-Year Rolling Average Concentrations were generally flat over time, with the
exception of a few pollutants (benzene and naphthalene),
o 100% Reporting of Datasets
• Method Quality Objectives (MQO): 2003-2018
o Completeness: Met 85% completeness in 219 of 270 pollutant datasets
o Method Detection Limits: Met MDL Target Ratio of 1.00 in 198 of 273 pollutant datasets
o Bias: Met ±25% for 198 of 229 pollutant datasets
o Overall Method Precision: Met <15% CV for 42 of 157 pollutant datasets
o Analytical Method Precision: Met <15% CV for 26 of 124 pollutant datasets
• Analytical Laboratories for 2018
voc
Carbonyl
PMio Metals
Chromium VI
PAHs
GADNR
GADNR
GADNR
NA
GADNR
• Equipment Year Deployed
Equipment Type
VOC
Carbonyl
PMio Metals
Chromium VI
PAHs
Sampler
2010
2010
2016
2008
2016
Analytical
2005
1993
2015
2001
2014
Preconcentrator
2016
NA
NA
NA
NA
Standards Preparation
2016
NA
NA
NA
NA
Canister Cleaning
2016
NA
NA
NA
NA
Extraction
NA
NA
2012
2011
2015
-------
National Summary: NATTS data were collected at 27 locations across the United States,
with sites beginning in 2003 or later (Figure 1) for 19 core HAPs. Over 528,000 concentrations
(primary, secondary, and replicate) were generated and analyzed for this assessment. Pollutant
datasets were scored to assess whether they were suitable for trends analysis. Each
pollutant dataset was evaluated against four MQOs: Completeness; Sensitivity; Bias; and
Precision. Datasets that were suitable (A- or B-rated) for six consecutive years were used for
national trends analysis (Table 1).
National trends were determined by comparing the most recent 3-year blocked averages
(e.g., 2013-2015 vs. 2016-2018) to determine if the NATTS Trends DQO was being met:
To be able to detect a al5percent difference (trend) between the annual mean
concentrations of successive 3-year periods within acceptable levels of decision error.
Of the 19 core HAPs. 18 were assessed for the NATTS Trends DQO. Due to sampling and
analytical issues, acrolein was not considered for trends analysis (Table 2). This assessment
showed that across the network, 15 of those 18 pollutants were decreasing between the
3-year blocks, while two of those pollutants were increasing between the 3-year blocks.
One pollutant did not exhibit a trend.
Table 1. NATTS Network Assessment: Count and Percentage of Suitable
Datasets by Pollutant Group
Pollutant Group
A-rated
B-rated
Does Not Meet
#
%
#
%
#
%
VOCs
1,452
53%
737
27%
555
20%
Carbonyls
523
67%
193
25%
66
8%
PM10 Metals
1,418
61%
685
30%
213
9%
Chromium VI
159
74%
29
13%
27
13%
PAHs
410
74%
124
22%
18
3%
Total = 6,609
3,962
60%
1,768
27%
879
13%
Table 2. Three-Year Block Averages for National Trends
Pollutant
Units
# Sites
Block 1
Block 2
% Difference
Acetaldehyde
Hg/m3
19
1.51
1.39
-7.7%
Arsenic (PM10)
ng/m
21
0.71
0.68
-3.2%
Benzene
Hg/m3
19
0.65
0.59
-10.2%
Figure 1. NATTS Site and Year Established
Benzo(a)pyrene
ng/m3
21
0.113
0.087
-23.2%
Seattle, ,
Beryllium (PM10)
ng/m3
20
0.012
0.009
-26.4%
Butadiene, 1,3-
Hg/m3
19
0.071
0.063
-10.9%
Portland (#1), OR* Portland (#2), OR _ ^ / \
• > ' \ ; " I I >
Cadmium (PM10)
ng/m3
21
0.170
0.097
-43.0%
* »•* l | - Underbill.Vt
/l_a Grande (#1), OR*-' '"•••JL. • _ _ j ,,l M/ i ' \ f
} /. a V«?i-7S»" I s ') H or icon.' Wit' \ \ "-Roxbury. MA
j... ¦ La Grande (#2), OR i f c-/ . * ] Rochester, NY \ I ...-S
) / ; I | May ville.Wr >f, \~ V
/ i ! I -->.#/ \ Detroit; Ml f
- — — ; I i J \ j X. Providence, Rl
f / Bountiful'UT | X — \ ^f- .Bronx (#1), NY"
\ 1 ™ . \ Chicago, IL ¦ ; _ j \ S
_ X \ ' . 1, , Washington^D.C. "w
SanJoBB.CA j [ ^
, Grand Junction. CO V St Louis MO Grayson Lake. KY J ' Bronit (#2), NV"
\ \ _ ' 1 v. U-.--.'1" . ,-.v * Richmond. -VA
S \ _ : i . \ i i*/ '
. . . \ ' v • - — -1 _ Vs Hazard, KY*--^-""?" / j
Los Angeles, CA \J ; j_ | _ J _ r - "[¦/
- Rubidoux, CA i / £' y-""" /
• X: / >' ' 1 / T \Chesterf ield, SC
NATTS Sites phoenix.AZ / ; —J / 1 j. /
; i Karnack, TX ) South DeKalb, GA y
~ Rural \ j | J , > /
O Urban X \ t ; \ ,r(
NATTS - Year Established Houston, ri ^\
| 2003 "^T.mp,.FL
¦ 2004 \ Pinellas County, FL, 'i
1 "> ./ 'i. 1
¦ 2007 1 >
"ft
¦ 2008
| | 2009
2010
2016
?ni7 * The Hazare|. Mayville, Wl, La Grande <#1), OR, Portland (#1), OR, sites were relocated in 2008, 2009, 2016, and 2017, respectively.
"The Bronx (#1), NY site temporarily moved to the Bronx (#2), NY site from mid-2010 to mid-2012.
Carbon Tetrachloride
Hg/m3
15
0.59
0.56
-4.7%
Chloroform
Hg/m3
20
0.256
0.255
-0.4%
Chromium VI
ng/m
18
0.029
0.026
-7.7%
Formaldehyde
Hg/m3
19
2.77
2.68
-3.3%
Lead (PM10)
ng/m
21
3.08
2.81
-8.9%
Manganese (PM10)
ng/m3
20
8.06
7.93
-1.6%
Naphthalene
ng/m3
20
66.70
51.08
-23.4%
Nickel (PM10)
ng/m3
19
1.28
1.05
-18.0%
T etracliloroethylene
ng/m3
19
0.149
0.174
17.2%
T ricliloroethylene
ng/m3
19
0.020
0.022
10.7%
Vinyl Cliloride
ng/m3
17
0.0051
0.0048
-5.5%
Page 1 of 26
-------
NATTS Monitoring Site Report: South DeKalb, GA
Site Information Figure 2. NATTS Site Location
Region
4
NATTS Site Type
Urban
County
DeKalb
AQS Site Code
13-089-0002
NATTS Operating Agency
GA Dept. of Natural Resources
Latitude
33.688007
Longitude
-84.290325
AQS Land Use
Residential
AQS Location Setting
Suburban
10-Mile Population
713,340
Pollutant Datasets Evaluation: Suitable for Trends (Y=yes; Y(T
=yes, and used for DQO Trends; N=No; "=not rated
Final Pollutant Name
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Acetaldehvde
Y
Na
Na
Na
Y
Na
Na
Na
Nb
Nc
Nc
Nc
Nc
Nb
Y
Y
Arsenic (PM10)
Na
Y
Nd
Y
Y
Y
Y
Y
Y
Y
Nb
Na'e
Y
Y
Na'd
Y
Benzene
Y
Y
Y
Y
Y
Y
Y
Y
Nb
Nc
Nc
Y
Y
Y
Y
Y
Benzo(a)pyrene
--
~
—
~
--
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Beryllium (PM10)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Nb
Y
Y
Y
Y
Y
Butadiene, 1,3-
Na
Na
Y
Y
Y
Y
Y
Y
Nb
Nc
Nc
Y
Y
Y
Y
Y
Cadmium (PM10)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Nb
Y
Y
Y
Y
Y
Carbon tetrachloride
Na
Na
Na
Y
Y
Y
Y
Y
Nb
Nc
Nc
Y
Nf
Nf
Y
Y
Chloroform
Na
Na
Y
Y
Y
Y
Y
Y
Nb
Nc
Nc
Y
Y
Y
Y
Y
Chromium VI
~
~
Y
Y
Nb
Nb
Y
Y
Y
Y
-
~
-
-
-
~
Formaldehyde
Y
Y
Y
Y
Y
Y
Y
Y
Nb
Nc
Nc
Nc
Nc
Nb
Y
Y
Lead (PM10)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Nb
Y
Y
Y
Y
Y
Manganese (PM10)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Nb
Y
Y
Y
Y
Y
Naphthalene
--
~
..
..
—
Y
Y
Y
Y
Y
Y (T)
Y(T)
Y(T)
Y(T)
Y (T)
Y(T)
Nickel (PM10)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Nb
Y
Y
Y
Y
Y
T etrachloroethylene
Na
Na
Y
Y
Y
Y
Y
Y
Nb
Nc
Nc
Y
Ng
Y
Y
Y
T richloroethvlene
Na
Na
Y
Y
Y
Y
Y
Y
Nb
Nc
Nc
Y
Y
Y
Y
Ng
Vinyl chloride
Na
Na
Y
Y
Y
Y
Y
Y
Nb
Nc
Nc
Y
Y
Y
Y
Y
a: Reported MDL to NATTS Target Ratio greater than 2.0
b: Completeness was less than 75% based on l-in-6 day sampling.
c: Pollutant was expected, but were invalidated at this site for this year.
d: Bias % Difference was outside ± 35%.
c: Bias % Difference was outside ± 35%; Precision PCT CV was greater than 25%.
f: % Difference was outside ± 35%.
g: Analytical precision data (required since 2012) was not reported to EPA or AQS for this pollutant.
Page 2 of 26
-------
Table 3. NATTS Network Assessment Data (2003-2018) - National Distribution Statistics By Type3
Analyte
Units
Site Type
# Data
Records
%
Detections
Arithmetic
Meanb
Percentile Value0
5th
10th
25th
50th
75th
90th
95th
Acetaldehyde
ng/m3
Urban
15,704
100%
1.77 ± 0.02
0.50
0.66
0.97
1.45
2.19
3.24
4.04
ng/m3
Rural
4,930
100%
1.20 ± 0.04
0.36
0.46
0.65
0.93
1.38
2.02
2.76
ng/m3
All Sites
20,634
100%
1.63 ± 0.02
0.44
0.58
0.86
1.31
2.00
3.02
3.86
Arsenic (PM10)
ng/m3
Urban
14,968
97%
0.89 ± 0.04
0.10
0.19
0.34
0.58
0.99
1.70
2.41
ng/m3
Rural
4,622
96%
0.49 ± 0.02
0.04
0.08
0.17
0.35
0.59
0.94
1.28
ng/m3
All Sites
19,590
97%
0.79 ± 0.03
0.06
0.14
0.29
0.52
0.89
1.54
2.19
Benzene
Hg/m3
Urban
15,984
99%
0.86 ± 0.01
0.25
0.30
0.43
0.66
1.05
1.64
2.21
Hg/m3
Rural
2,494
95%
0.43 ± 0.02
0.04
0.13
0.21
0.33
0.52
0.78
1.01
Hg/m3
All Sites
18,478
99%
0.81 ± 0.01
0.19
0.26
0.39
0.61
0.98
1.55
2.09
Benzo(a)pyrene
ng/m3
Urban
12,336
70%
0.096 ± 0.004
ND
ND
ND
0.04
0.11
0.24
0.37
ng/m3
Rural
3,179
36%
0.067 ± 0.009
ND
ND
ND
ND
0.02
0.13
0.37
ng/m3
All Sites
15,515
63%
0.090 ± 0.004
ND
ND
ND
0.03
0.10
0.23
0.37
Beryllium (PM10)
ng/m3
Urban
15,783
75%
0.051 ± 0.006
ND
ND
0.00003
0.005
0.018
0.050
0.101
ng/m3
Rural
4,687
49%
0.023 ± 0.003
ND
ND
ND
ND
0.005
0.017
0.072
ng/m3
All Sites
20,470
69%
0.045 ± 0.005
ND
ND
ND
0.003
0.012
0.049
0.100
Butadiene, 1,3-
Hg/m3
Urban
15,388
81%
0.092 ± 0.002
ND
ND
0.025
0.058
0.114
0.215
0.302
ng/m3
Rural
2,185
29%
0.012 ± 0.001
ND
ND
ND
ND
0.017
0.046
0.059
ng/m3
All Sites
17,573
75%
0.082 ± 0.002
ND
ND
ND
0.049
0.104
0.199
0.287
Cadmium (PM10)
ng/m3
Urban
16,360
92%
0.21 ± 0.02
ND
0.01
0.05
0.09
0.17
0.42
0.63
ng/m3
Rural
4,684
87%
0.10 ± 0.01
ND
ND
0.03
0.06
0.11
0.20
0.29
ng/m3
All Sites
21,044
91%
0.18 ± 0.01
ND
0.01
0.04
0.08
0.16
0.35
0.56
Carbon Tetrachloride
ng/m3
Urban
14,713
99%
0.569 ± 0.003
0.361
0.433
0.496
0.562
0.651
0.737
0.798
ng/m3
Rural
2,189
92%
0.534 ± 0.016
ND
0.180
0.402
0.537
0.633
0.727
0.798
ng/m3
All Sites
16,902
98%
0.565 ± 0.003
0.304
0.408
0.490
0.559
0.649
0.736
0.798
Chloroform
ng/m3
Urban
16,068
87%
0.265 ± 0.022
ND
ND
0.093
0.132
0.217
0.420
0.668
ng/m3
Rural
3,802
43%
0.052 ± 0.003
ND
ND
ND
ND
0.095
0.144
0.230
ng/m3
All Sites
19,870
79%
0.224 ± 0.018
ND
ND
0.064
0.113
0.196
0.364
0.586
Chromium VI
ng/m3
Urban
8,414
74%
0.036 ± 0.002
ND
ND
ND
0.020
0.042
0.081
0.120
ng/m3
Rural
2,586
41%
0.018 ± 0.004
ND
ND
ND
ND
0.017
0.031
0.051
ng/m3
All Sites
11,000
66%
0.032 ± 0.001
ND
ND
ND
0.016
0.036
0.073
0.114
Page 3 of 26
-------
Table 3. NATTS Network Assessment Data (2003-2018) - National Distribution Statistics By Type3
Analyte
Units
Site Type
# Data
Records
%
Detections
Arithmetic
Meanb
Percentile Value0
5th
10th
25th
50th
75th
90th
95th
Formaldehyde
ng/m3
Urban
16,118
100%
3.11 ± 0.04
0.66
0.99
1.60
2.47
3.84
5.63
7.25
ng/m3
Rural
5,002
100%
2.22 ± 0.05
0.53
0.68
1.06
1.69
2.74
4.19
5.45
ng/m3
All Sites
21,120
100%
2.90 ± 0.04
0.61
0.86
1.43
2.29
3.59
5.38
6.96
Lead (PM10)
ng/m3
Urban
16,366
100%
4.21 ± 0.13
0.72
0.98
1.55
2.64
4.56
8.35
11.90
ng/m3
Rural
4,680
99%
2.10 ± 0.16
0.37
0.50
0.84
1.41
2.37
3.91
5.36
ng/m3
All Sites
21,046
99%
3.74 ± 0.11
0.55
0.80
1.31
2.31
4.04
7.41
10.56
Manganese (PM10)
ng/m3
Urban
16,141
100%
9.80 ± 0.32
1.09
1.51
2.52
4.92
10.21
20.10
30.08
ng/m3
Rural
4,627
99%
3.96 ± 0.14
0.46
0.73
1.36
2.57
4.75
8.54
12.13
ng/m3
All Sites
20,768
100%
8.50 ± 0.25
0.85
1.23
2.15
4.18
8.89
17.98
26.70
Naphthalene
ng/m3
Urban
12,332
100%
74.63 ± 1.14
15.62
21.27
33.55
55.89
94.64
150.05
196.16
ng/m3
Rural
3,301
100%
24.47 ± 1.38
3.74
4.73
7.74
13.86
26.25
50.88
79.17
ng/m3
All Sites
15,633
100%
64.04 ± 1.00
6.58
10.92
23.37
45.59
83.31
137.54
181.75
Nickel (PM10)
ng/m3
Urban
16,125
97%
1.85 ± 0.05
0.25
0.41
0.67
1.11
2.00
3.52
5.27
ng/m3
Rural
4,623
85%
0.65 ± 0.08
ND
ND
0.10
0.28
0.64
1.15
1.89
ng/m3
All Sites
20,748
94%
1.58 ± 0.04
ND
0.15
0.47
0.92
1.73
3.14
4.74
T etrachloroethylene
Hg/m3
Urban
15,612
86%
0.25 ± 0.01
ND
ND
0.06
0.13
0.25
0.48
0.74
Hg/m3
Rural
2,272
36%
0.09 ± 0.04
ND
ND
ND
ND
0.04
0.08
0.16
Hg/m3
All Sites
17,884
79%
0.23 ± 0.01
ND
ND
0.04
0.11
0.22
0.44
0.70
T richloroethylene
Hg/m3
Urban
15,843
41%
0.040 ± 0.002
ND
ND
ND
ND
0.051
0.107
0.164
ng/m3
Rural
3,388
13%
0.021 ± 0.003
ND
ND
ND
ND
ND
0.017
0.250
ng/m3
All Sites
19,231
36%
0.037 ± 0.002
ND
ND
ND
ND
0.041
0.105
0.167
Vinyl Chloride
ng/m3
Urban
14,778
19%
0.0044 ± 0.0003
ND
ND
ND
ND
ND
0.0137
0.0257
ng/m3
Rural
2,444
8%
0.0040 ± 0.0009
ND
ND
ND
ND
ND
ND
0.0156
ng/m3
All Sites
17,222
17%
0.0043 ± 0.0003
ND
ND
ND
ND
ND
0.0126
0.0254
3 Statistics presented are from pollutant datasets which were suitable for trends.
b The arithmetic mean is the average of all samples results which include actual measured values. If no chemical was registered, then a value of zero is
used when calculating the mean.
c ND: No results of this chemical were registered by the laboratory analytical equipment.
Page 4 of 26
-------
Table 4. Summary Statistics for South DeKalb, GA
Analyte
Units
# Data
Records
%
Detection
Arithmetic Mean3
Percentile Valueb
5th
10th
25th
50th
75th
90th
95th
Acetaldehyde
(ig/m3
619
93%
2.64 ± 0.16
ND
0.62
1.37
2.27
3.47
5.08
6.07
Arsenic (PM10)
ng/m3
885
73%
0.55 ± 0.04
ND
ND
ND
0.50
0.82
1.13
1.44
Benzene
(ig/m3
800
88%
0.71 ± 0.05
ND
ND
0.32
0.54
0.88
1.45
1.94
Benzo(a)pyrene
ng/m3
685
34%
0.04 ± 0.01
ND
ND
ND
ND
0.04
0.15
0.24
Beryllium (PM10)
ng/m3
886
5%
0.004 ± 0.003
ND
ND
ND
ND
ND
ND
ND
Butadiene, 1,3-
l-tg/m3
774
5%
0.018 ± 0.010
ND
ND
ND
ND
ND
ND
0.073
Cadmium (PM10)
ng/m3
886
75%
0.08 ± 0.01
ND
ND
ND
0.05
0.10
0.16
0.21
Carbon Tetrachloride
l-tg/m3
767
83%
0.40 ± 0.01
ND
ND
0.34
0.45
0.53
0.59
0.64
Chloroform
l-tg/m3
770
31%
0.057 ± 0.008
ND
ND
ND
ND
0.098
0.190
0.256
Chromium VI
ng/m3
439
66%
0.019 ± 0.003
ND
ND
ND
0.014
0.027
0.046
0.056
Formaldehyde
l-tg/m3
614
100%
6.20 ± 0.37
1.32
1.90
3.26
5.36
7.53
11.04
15.01
Lead (PM10)
ng/m3
889
100%
1.95 ± 0.17
0.63
0.79
1.05
1.56
2.23
3.14
3.92
Manganese (PM10)
ng/m3
887
100%
3.44 ± 0.21
0.96
1.24
1.84
2.81
4.09
5.90
7.42
Naphthalene
ng/m3
682
100%
70.82 ± 4.43
11.29
18.20
30.76
52.80
95.16
143.64
182.80
Nickel (PM10)
ng/m3
886
90%
1.22 ± 0.17
ND
0.19
0.59
0.81
1.13
1.69
2.60
T etrachloroethylene
l-tg/m3
775
30%
0.074 ± 0.011
ND
ND
ND
ND
0.123
0.226
0.343
Trichloroethylene
l-tg/m3
773
7%
0.006 ± 0.002
ND
ND
ND
ND
ND
ND
0.067
Vinyl Chloride
l-tg/m3
771
9%
0.0054 ± 0.0013
ND
ND
ND
ND
ND
ND
0.0548
3 :The arithmetic mean is the average of all samples results which included actual measured values. If no chemical was registered, then a value of zero is used.
bND: No results of this chemical were registered by the laboratory analytical equipment.
Table 5. Analytical Labs Supporting this Site
Pollutant Group
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
VOCs
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
Carbonyls
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
PM10 Metals
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
Chromium VI
-
-
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
-
-
-
-
--
PAHs
-
-
-
-
-
ERG
ERG
ERG
ERG
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
GADNR
—: Not Applicable
GADNR: Georgia Department of Natural Resources
ERG: Eastern Research Group, Inc.
Page 5 of 26
-------
Figure 3. South DeKalb, GA Annual Average Concentrations
5.0
4.0
~3tj
o
C3
3.0
2.0
o
u 1.0
0.0
South DeKalb, GA
Annual Averages:
Acetaldehvde
1 i i 1 1 1 i i i i i 1 1 i i 1
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
1.5
1.2
~-4
o
0.9
0.6
o
U 0.3
0.0
South DeKalb, GA
Annual Averages:
Arsenic (PM10)
~
I T
i
^ T
{
o
I
1
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
2.0
1.6
B 0.8
53
u
£ 0.4
0.0
South DeKalb, GA
Annual Averages:
Benzene
(
1
T J J . I
—~
1 ~-
h
H
1—~"
1—
(-~H
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
0.15
0.12
c 0.09
0.06
U 0.03
0.00
South DeKalb, GA
Annual Averages:
Benzo(a)pyrene
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Page 6 of 26
-------
Figure 3. South DeKalb, GA Annual Average Concentrations
o.io
0.08
~3tj
& 0.06
& 0.04
§
t-i
O
U 0.02
0.00
South DeKalb, GA
Annual Averages:
Beryllium (PM10)
Ul
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
South DeKalb, GA
Annual Averages:
1,3-Butadiene
0.25
0.20 -¦
0.15 ¦¦
i
V '
o
re
a o.io --
§
o
O
U 0.05 +
0.00
2003 2004 2005 2006 2007 2008 2009 2010 2011 :
Year
!012 2013 2014 2015 2016 2017 2018
0.30
0.24
~eSj
re
h
o
U
0.18
0.12
0.06
0.00
South DeKalb, GA
Annual Averages:
Cadmium (PM10)
rtti
i-+
J
1
f
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
South DeKalb, GA
Annual Averages:
Carbon Tetrachloride
m
v—s
r~*
O
i * * * *
*
X
1
u
§ 0.2 -
u
* *
2003 2004
2005
2006 2007 2008 2009 2010 2011 2012
Year
2013 2014 2015 2016 2017 2018
Page 7 of 26
-------
Figure 3. South DeKalb, GA Annual Average Concentrations
0.20
0.16 --
3 0.12 -
S3
_o
a 0.08 f
<3 0.04 --
0.00 4-
South DeKalb, GA
Annual Averages:
Chloroform
F
u
. 1 1 1 1 1 1 1 1 1—¦—I——I 1 1 1
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
South DeKalb, GA
Annual Averages:
Formaldehyde
12.5
10.0
7.5
~6jj
•H
o
03
£ 5.0
o
U 2.5
0.0
' Fi *
4
f
T
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
0.075
0.060
S
ali
s
^ 0.045
o
o
U
0.015
0.000
South DeKalb, GA
Annual Averages:
Hexavalent Chromium
f
f
South DeKalb, GA
Annual Averages:
Lead (PM10)
5.0
4.0
"5b
3 3.0
a 2.o
53
o
U 1-0
0.0
rryi
}-T+t
1 i 1 i i i i i i i 1 i i i i
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Page 8 of 26
-------
Figure 3. South DeKalb, GA Annual Average Concentrations
South DeKalb, GA
Annual Averages:
Manganese (PM10)
7.5
6.0
~5ti
4.5
C3
a
o
u
3.0
1.5
0.0
"FT
i
TT
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
200.0
160.0
a
K 120.0
H 80.0
{j 40.0
0.0
South DeKalb, GA
Annual Averages:
Naphthalene
i
f
i— i—i—i}—i-
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
6.0
4.8
~Sfj
3.6
o
U
1.2
0.0
South DeKalb, GA
Annual Averages:
Nickel (PM10)
r^r
i »
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
0.25 T
0.20
"Bij i
0.15
o
15 0.10
O 0.05 --
u
0.00
South DeKalb, GA
Annual Averages:
Tetrachloroethvlene
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Page 9 of 26
-------
Figure 3. South DeKalb, GA Annual Average Concentrations
0.040
C",
0.032 -
0.024 -
o
CZ
r->
O
0.016 -
O
(J
0.008 -
0.000 +
South DeKalb, GA
Annual Averages:
Trichloroethylene
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
0.05
C3
£
O
u
0.04 -
0.03 -
0.02 ¦-
0.01 -
0.00
South DeKalb, GA
Annual Averages:
Vinyl Chloride
2003 20042005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Does not meet MQO
Page 10 of 26
-------
Figure 4. South Dekalb, GA - 3-Year Rolling Average Concentrations
4.0 t
South DeKalb, GA
3-Year Rolling Averages:
Acetaldehyde
j
I
N
C.
i
r—i
i
I
i
o
cS
y
i
\
\
I
J
<
~
Cj 1-0
r-l
o
U
0.8 -
1
t
1
3°0S "°06
, ^
-°/0
Years
J6".
%
Years
Page 11 of 26
-------
Figure 4. South Dekalb, GA - 3-Year Rolling Average Concentrations
1.5
South DeKalb, GA
3-Year Rolling Averages:
Benzene
1.2
"5b
| 0.9
<—
cc
a
53
o 0.6
o
U
0.3
4
l
rr
i
III* i i
i
0.0
^ 2o0 % ^ -3?/ \ 3?,
JvV>_ ^vVi. JvV,_ °vV,_ XV>«_ ^vVl. ^Vjry ^VVl. ' vVi. vvV,_ -\-V, _ yvVl_ JvV,_
Years
>Oos v% v%7'^ ^ yv>0// 'v»0/j ^
0.15
South DeKalb, GA
3-Year Rolling Averages:
Benzo(a)pvrene
<^7 0.12
"I
| 0.09
cc
&
3
u
0.06
o
U
0.03
0.00
I
i
i
T
-------
Figure 4. South Dekalb, GA - 3-Year Rolling Average Concentrations
0.040
0.032
a 0.024
o
*+—'
03
.b
§ 0.016
o
U
0.008
0.000
South DeKalb, GA
3-Year Rolling Averages:
Beryllium (PM10)
* {
n
^ ^ ^ ^
-°06 ^°0y v% -°09 "°// -°/y -°Jj "°/s "°/6 -°Jy ^°JS
Years
0.10
0.08
~Bti
cz
'a
a
U
0.06
0.04
0.02
0.00
South DeKalb, GA
3-Year Rolling Averages:
1,3-Butadiene
(><;
'%
-%>
"ftp
» 1 * 1 ~ l ~ 1 ~
2oo8
-------
Figure 4. South Dekalb, GA - 3-Year Rolling Average Concentrations
0.20
0.16
a 012
_o
cc
£3
g 0.08
o
u
0.04
0.00
1
South DeKalb, GA
3-Year Rolling Averages:
Cadmium (PM10)
T~t
M
f
^ ^ ^ ^?0 ^ ^ ^ *>/&.
"°0S -% -°0? -% -°o9 "°/0 "°j, "°/j "°/s % °'8
Years
South DeKalb, GA
3-Year Rolling Averages:
Carbon Tetrachloride
1.0
0.8
0.6
C3
B
§ 0.4
o
U
0.2
0.0
~
*
# ~ ~
#
~
y
~
~
*
#
L
i
T
o
t
^ ^ ^ ^ ^ *>, ^ ^ *0, ^
3°06 ^°Oy ^°Os ^°09 30j0 0/j *-0/j ^O/j ^0/s <0/(. ^0/?
Years
Page 14 of 26
-------
Figure 4. South Dekalb, GA - 3-Year Rolling Average Concentrations
South DeKalb, GA
3-Year Rolling Averages:
Chloroform
0.20
0.16
a
S 0.
O
re
'a
u 0.<
12
o
U
0.04
0.00
J
f
u
T
~i r~
I I
?
n 1 1 1 1 1 1 1
%" %
^°Of) "°Oy
e°09 ^°/(j / ~*°/j "0O
Years
South DeKalb, GA
3-Year Rolling Averages:
Formaldehyde
10.0
8.0
<—>
'a 6 0
0
to
'a
1 4.0
r-t
o
U
2.0
0.0
? i * tT
a
i
~l T"
*
"i r-
~l 1
^°Os -00(S
-------
Figure 4. South Dekalb, GA - 3-Year Rolling Average Concentrations
0.050
0.040
"&L
South DeKalb, GA
3-Year Rolling Averages:
Hexavalent Chromium
a 0.030
o
¦4—
a
r-<
S 0.020
o
U
0.010
i
i
i
0.000
lo,
*0,
Wsj,
Years
%
V/
<>
South DeKalb, GA
3-Year Rolling Averages:
Lead (PM10)
4.0
3.2
"5b
a 2.4
o
03
&
CJ
1.6
* * *
-f
i i
o
U
0.0
i r
^%o ^/o ^ ^ ^
-00s ioo? ^Oog 10/J ^v> ^ ^ ^ ^
Years
Page 16 of 26
-------
Figure 4. South Dekalb, GA - 3-Year Rolling Average Concentrations
5.0
4.0
a 3,0
o
IS
¦g
| 2.0
o
U
1.0
0.0
South DeKalb, GA
3-Year Rolling Averages:
Manganese (PM10)
t {
i
i
i
ir
3°0j^ ^ ^ ^ ^ ^ ^ ^ \ ^
^°0S °06 "-°0? ^00g 20j0 ^0/J -O/j -?0/j O/q *>is -~0/6 ?0/? 1$
Years
South DeKalb, GA
3-Year Rolling Averages:
Naphthalene
150.0
120.0
O 90.0 —
C3
a
r—l
a)
o
«—»
o
U
T
60.0
i
i
I
t
30.0
0.0
-o0
%
OOo
-------
Figure 4. South Dekalb, GA - 3-Year Rolling Average Concentrations
3.0
*h2A
J
r-i
.2 1.8
cc
£
09 , , 20y „ 20j 20j 2o, 20/
KPr,. "VV, ""3,, ^J5„ <\X. *>J>„ J«jn °-
^
^ ^//
^ ^ ^ ^ ^
Years
Page 18 of 26
-------
Figure 4. South Dekalb, GA - 3-Year Rolling Average Concentrations
South DeKalb, GA
3-Year Rolling Averages:
Trichloroethylene
0.035
0.028 -
"St
0.021 -
CZ
§ 0.014
v
(j
o
U
0.007 x
0.000
i
~
o
iL
<>
1 ° i i
i
, 200 , , 2°0?, , 2°0q , *Oj lo, i. J\V,.
^
'/0 %/
^ ^/j ^°J>
Years
0.030
0.024
~5fj
g 0.018
a
§
rt 0.012
o
U
0.006
0.000 J-
South Dekalb, GA
3-Year Rolling Averages:
Vinyl Chloride
~ i ~ i ~ i ~
^V, ^ ^/o ^
-°0s °°6 °°> "°°8 °°9 °!o °*1 J3 "°J
-------
Table 6. NATTS Network Assessment: MQO#l - Completeness Percentage at South DeKalb, GA
Pollutant Group
Year
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyl
Acetaldehyde
90
97
95
95
93
90
93
93
34
a
a
a
a
44
93
97
Carbonyl
Formaldehyde
92
97
95
93
93
90
93
93
34
a
a
a
a
44
93
89
Chromium VI
Chromium VI
—
—
94
93
68
48
95
98
100
89
—
—
—
—
—
—
PAH
Benzo(a)pyrene
—
—
—
—
--
98
97
97
100
95
92
92
100
92
98
97
PAH
Naphthalene
—
—
—
—
-
98
97
97
100
95
92
92
100
92
98
92
PM10 Metals
Arsenic (PM10)
84
93
90
97
95
89
97
97
93
93
46
82
98
100
100
100
PM10 Metals
Beryllium (PM10)
84
93
90
97
95
89
97
97
93
93
48
82
98
100
100
100
PM10 Metals
Cadmium (PM10)
84
93
90
97
95
89
97
97
93
93
48
82
98
100
100
100
PM10 Metals
Lead (PM10)
89
93
90
97
95
89
97
97
93
93
48
82
98
100
100
100
PM10 Metals
Manganese (PM10)
89
93
90
97
95
89
97
97
93
93
48
82
98
100
100
97
PM10 Metals
Nickel (PM10)
84
93
90
97
95
89
97
97
93
93
48
82
98
100
100
100
voc
Benzene
113
120
89
100
95
89
89
92
34
a
a
98
102
98
98
98
voc
Butadiene, 1,3-
97
92
89
100
95
89
89
92
34
a
a
98
102
98
98
100
voc
Carbon tetrachloride
97
92
89
100
95
89
89
92
34
a
a
98
102
98
98
89
voc
Chloroform
97
92
89
100
95
89
89
92
34
a
a
98
102
98
98
93
voc
T etrachloroethylene
97
92
89
100
95
89
89
92
34
a
a
98
102
98
98
102
voc
T richloroethylene
97
92
89
100
95
89
89
92
34
a
a
98
102
98
98
98
voc
Vinyl chloride
97
92
89
100
95
89
89
92
34
a
a
98
102
98
98
95
A-rated: >85%
B-rated: Between 75% to 85%
Does not meet: <75%
No data available
Page 20 of 26
-------
Table 7. NATTS Network Assessment: MQO#2 - Reported Method Detection Limits (MDLs) at South DeKalb, GA
Pollutant
Group
Pollutant Name
Target
MDL
Units
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyl
Acetaldehyde
0.45
pg/m3
0.002
2.85
2.69
2.85
0.34
2.69
2.69
2.85
2.85
b
b
b
b
0.12
0.0001
0.17
Carbonyl
Formaldehyde
0.98/0.08a
Ug/m3
0.001
1.31
1.24
1.31
0.15
1.24
1.24
1.31
1.31
b
b
b
b
0.14
0.0001
0.49
Chromium VI
Chromium VI
0.08
ng/m3
--
--
0.15
0.14
0.09
0.08
0.05
0.01
0.03
0.04
0.05
--
--
--
"
--
PAH
Benzo(a)pyrene
0.91
ng/m3
--
--
--
--
0.09
0.09
0.08
0.05
0.06
0.00
0.07
0.09
0.07
0.00
0.07
0.03
PAH
Naphthalene
29.00
ng/m3
~
--
--
--
0.003
0.018
0.010
0.011
0.004
0.000
0.001
0.001
0.002
0.000
0.005
0.02
PM10 Metals
Arsenic (PM10)
0.23
ng/m3
9.39
1.39
1.35
1.30
1.39
1.43
0.65
0.61
0.65
1.22
1.00
2.09
1.35
1.61
3.30
1.91
PM10 Metals
Beryllium (PM10)
0.42
ng/m3
1.02
0.10
0.07
0.07
0.10
0.10
0.02
0.02
0.02
0.02
0.07
0.12
0.02
0.02
0.05
0.05
PM10 Metals
Cadmium (PM10)
0.56
ng/m3
0.77
0.04
0.04
0.04
0.04
0.04
0.05
0.30
0.54
0.05
0.05
0.29
0.02
0.02
0.04
0.04
PM10 Metals
Lead (PM10)
15.0
ng/m3
0.03
0.005
0.005
0.005
0.005
0.005
0.001
0.001
0.001
0.001
0.002
0.003
0.001
0.004
0.03
0.01
PM10 Metals
Manganese (PM10)
5.0
ng/m3
0.09
0.02
0.02
0.02
0.02
0.02
0.002
0.002
0.002
0.002
0.006
0.010
0.002
0.06
0.10
0.06
PM10 Metals
Nickel (PM10)
2.1
ng/m3
1.03
0.07
0.07
0.06
0.07
0.07
0.01
0.01
0.01
0.01
0.01
0.02
0.01
0.36
0.19
0.23
voc
Benzene
0.13
pg/m3
0.82
0.82
1.18
0.88
0.71
0.54
0.54
0.66
0.66
b
b
0.96
0.96
0.96
0.32
0.32
voc
Butadiene, 1,3-
0.10
pg/m3
11.06
5.53
1.26
0.66
0.42
0.42
0.53
0.42
0.42
b
b
0.53
0.53
0.53
0.42
0.27
voc
Carbon tetrachloride
0.17
pg/m3
18.50
9.25
3.11
1.15
0.37
0.37
0.26
0.22
0.22
b
b
1.22
1.22
1.22
0.74
0.74
voc
Chloroform
0.50
pg/m3
4.88
2.44
0.72
0.39
0.17
0.16
0.16
0.22
0.22
b
b
0.57
0.57
0.57
0.25
0.22
voc
Tetrachloroethylene
0.17
pg/m3
19.95
9.97
1.99
1.12
0.84
0.72
0.72
0.80
0.68
b
b
1.00
1.00
1.00
0.64
0.64
voc
Trichloroethylene
0.5/0.2a
pg/m3
5.37
2.69
0.64
0.41
0.38
0.26
0.26
0.42
0.42
b
b
1.10
1.10
1.10
0.46
0.46
voc
Vinyl chloride
0.11
pg/m3
11.62
5.81
1.30
0.56
0.56
0.44
0.44
0.49
0.58
b
b
0.65
0.65
0.65
0.51
0.51
A-rated: MDL to Target MDL ratio < 1
B-rated" MDL to Target MDL ratio between 1 and 2
Does Not Meet MDL to Target MDL ratio>2
No data available
a: For the 2012 sampling year, the Target MDL for this pollutant was reduced.
b: Pollutant was expected, but invalidated at this site for this year.
Page 21 of 26
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Table 8. NATTS Network Assessment: MQO#3 - Bias Percent Difference at South DeKalb, GA
Pollutant Group
Pollutant Name
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyls
Acetaldehyde
-9.7
2.6
-13.8
-26.6
-14.3
-22.1
-2.7
-16.5
a
0.1
-4.3
a
-7.1
0.9
-11.2
Carbonyls
Formaldehyde
4.4
16.7
-8.5
-16.6
-3.2
-7.8
-4.3
-21.7
a
0.5
-2.2
a
-8.6
OO
00
1
-5.2
Chromium VI
Chromium VI
--
a
a
a
a
-5.6b
10.5b
a
19.5
-6.5
--
--
--
"
--
PAH
Benzo(a)pyrene
--
--
--
a
a
-1.7
-2.3
-2.1
25.2
-23.6
-33.4
-24.6
-23.3
-16.2
-10.2
PAH
Naphthalene
--
--
--
a
a
-7.7
-17.1
-13.9
21.4
-2.8
-35.3
-35.1
-34.0
-30.4
-34.9
PM10 Metals
Arsenic (PM10)
6.3
134.0
-0.5
8.2
13.3
-0.3
5.9
-5.5
4.9
-22.8
22.5
a
-25.1
-40.8
-6.3
PM10 Metals
Beryllium (PM10)
41.0
525.5
-2.3
19.9
-1.7
2.9
4.8
-2.5
7.2
-4.2
c
a
-11.0
-1.8
-6.9
PM10 Metals
Cadmium (PM10)
5.9
146.8
-10.5
7.2
7.3
-6.9
0.0
-9.2
4.2
-8.6
c
a
-8.6
2.7
-9.4
PM10 Metals
Lead (PM10)
-9.3
160.5
-5.9
6.1
14.0
32.4
-1.1
-6.6
10.9
-6.5
5.6
a
-9.4
8.0
-5.6
PM10 Metals
Manganese (PM10)
-4.2
122.5
-14.2
-10.1
-19.5
-27.8
1.0
-4.3
11.0
3.6
21.1
a
-7.1
0.6
-1.5
PM10 Metals
Nickel (PM10)
14.9
143.7
-14.7
-2.8
8.4
-13.9
8.6
-8.1
2.1
-6.2
d
a
12.3
17.8
-0.6
voc
Benzene
-12.4
-2.6
-4.3
-9.9
-15.4
-15.3
-13.2
-11.3
a
4.5
-1.5
-16.5
-30.6
-6.9
-32.1
voc
Butadiene, 1,3-
-4.2
-2.0
0.5
-14.0
1.0
-17.8
25.6
-13.7
a
1.7
-8.2
-6.4
-16.9
-32.0
-3.1
voc
Carbon tetrachloride
0.4
2.9
2.3
1.6
5.5
-12.3
2.0
-20.0
a
-9.4
2.1
116.9
51.2
2.3
-21.5
voc
Chloroform
-8.0
-1.2
-3.4
-4.0
-13.0
-17.5
-16.5
-25.8
a
5.7
3.4
-5.4
-16.3
4.5
-25.0
voc
T etrachloroethylene
-14.9
-6.9
-8.1
-9.5
-4.5
-15.9
-10.8
-20.8
a
-7.6
3.1
-40.6
-18.0
-3.9
-34.3
voc
T richloroethylene
-5.0
-5.5
4.1
-2.3
-6.3
-12.1
-10.1
-19.7
a
-2.0
-8.3
-19.5
-29.2
-3.0
-37.0
voc
Vinyl chloride
-19.1
-12.4
-4.3
-1.3
-15.5
-8.5
-2.4
-14.4
a
-7.7
-0.7
1.3
-16.9
OO
00
1
-24.9
A-rated:±25%
B-rated: Between 25% to 35% or between -25% to -35%
Doesnotmeet:>35%or<35%
No data available
a: No Proficiency Test samples were sent for this pollutant and year.
b: Proficiency Test results are from the National Contract Lab for EPA's School Air Toxics Monitoring Program. The %Difference was -5.55% in 2009 and 10.53% in 2010.
c: The Proficiency Test sample for this pollutant was 0; the site reported a concentration as "< MDL", rather than 0. EPA accepted this result.
d: Although a Proficiency Test sample was sent to the lab supporting this site and year, the results were nullified by EPA due to QA issues.
Page 22 of 26
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Table 9. NATTS Network Assessment: MQO#4 - Overall Method Precision %CV at South DeKalb, GA
Pollutant Group
Pollutant Name
Overall Method precision % CV
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyls
Acetaldehyde
--
--
--
22.0
31.5
17.1
14.9
27.9
23.3
--
--
--
--
52.1
33.3
56.9
Carbonyls
Formaldehyde
--
~
~
45.4
42.9
23.2
41.5
51.3
41.6
--
--
--
--
10.8
25.6
55.8
Chromium VI
Chromium VI
~
~
63.1
18.8
13.4
31.9
14.1
22.0
16.8
31.9
7.9
--
--
--
--
--
PAH
Benzo(a)pyrene
--
~
~
--
11.0
1.9
a
10.9
5.2
a
a
a
a
141.1
106.7
30.6
PAH
Naphthalene
—
—
—
—
9.1
7.0
11.8
9.1
6.4
46.3
38.0
22.1
11.0
136.9
81.1
4.3
PM10 Metals
Arsenic (PM10)
—
—
—
17.4
28.4
16.4
18.3
27.7
19.5
15.9
41.8
39.0
39.9
a
14.7
a
PM10 Metals
Beryllium (PM10)
—
—
—
a
a
a
84.9
0
53.3
a
a
a
a
a
a
a
PM10 Metals
Cadmium (PM10)
—
--
--
44.0
33.0
31.0
22.0
43.8
46.9
20.4
66.5
56.0
10.3
a
35.2
a
PM10 Metals
Lead (PM10)
—
~
~
25.2
26.5
21.6
27.2
17.3
15.5
14.2
34.9
29.6
30.9
a
6.5
5.5
PM10 Metals
Manganese (PM10)
--
--
~
33.1
27.5
23.7
24.6
25.5
15.5
22.8
45.2
31.5
33.3
a
13.8
0.3
PM10 Metals
Nickel (PM10)
—
~
--
47.0
33.7
23.3
15.2
41.0
23.8
16.7
37.3
31.7
40.6
a
4.6
18.2
voc
Benzene
58.2
57.3
13.3
15.5
21.1
23.1
28.5
23.7
22.3
--
--
23.9
27.9
25.6
44.5
21.8
voc
Butadiene, 1,3-
—
—
a
a
a
a
a
a
a
—
—
a
a
a
a
19.5
voc
Carbon tetrachloride
--
~
a
19.1
14.9
12.0
9.5
12.6
16.5
--
--
13.9
16.9
11.8
10.2
12.6
voc
Chloroform
~
--
a
7.7
22.1
10.8
15.0
0.0
a
--
--
28.3
a
17.7
OO
*00
13.8
voc
T etrachloroethylene
~
~
23.6
18.8
20.0
23.5
21.9
47.3
a
--
--
a
26.3
41.2
11.7
16.0
voc
T richloroethylene
~
~
a
a
a
a
a
a
a
--
--
a
a
118.4
3.8
39.4
voc
Vinyl chloride
~
~
a
a
a
a
a
a
a
--
--
a
a
88.8
a
24.1
A-rated:< 15% CV
B-rated: Between 15%CV to25% CV
Does Not Meet: >25% CV or did not report Precision (required in the NATTS Workplan Template since 2012)
No data available
a: Although both primary and secondary data were reported, both sets of values were less than the MDL. Thus no %CV was calculated.
Page 23 of 26
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Table 10. NATTS Network Assessment: MQO#4 - Analytical Precision %CV at South DeKalb, GA
Pollutant Group
Pollutant Name
Analytical Method precision % CV
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyls
Acetaldehyde
—
—
~
--
--
~
~
—
--
a
a
a
a
a
1.4
b
Carbonyls
Formaldehyde
—
—
~
~
~
--
~
—
~
a
a
a
a
0.4
1.7
0.5
Chromium VI
Chromium VI
—
—
~
5.2
5.0
5.0
8.2
4.7
5.4
3.0
7.0
—
—
--
—
--
PAH
Benzo(a)pyrene
—
—
--
~
4.2
5.5
b
9.4
1.1
3.1
a
a
a
a
a
a
PAH
Naphthalene
—
—
~
--
1.4
1.4
2.9
1.3
2.8
3.3
a
a
a
a
a
b
PM10 Metals
Arsenic (PM10)
--
--
~
~
--
~
--
--
--
a
a
a
a
a
b
b
PM10 Metals
Beryllium (PM10)
--
~
~
~
~
--
~
~
~
a
a
a
a
a
b
b
PM10 Metals
Cadmium (PM10)
--
--
~
~
~
~
--
~
~
a
a
a
a
a
b
b
PM10 Metals
Lead (PM10)
--
~
--
~
~
~
~
--
~
a
a
a
a
a
0
b
PM10 Metals
Manganese (PM10)
--
~
~
--
~
~
~
~
--
a
a
a
a
a
0
b
PM10 Metals
Nickel (PM10)
~
~
~
~
--
~
~
~
~
a
a
a
a
a
b
b
voc
Benzene
—
—
~
~
~
--
~
—
~
a
a
a
a
a
a
1.2
voc
Butadiene, 1,3-
--
--
~
~
~
~
--
~
~
a
a
a
a
a
a
a
voc
Carbon tetrachloride
—
—
--
~
~
~
~
—
~
a
a
a
a
a
a
a
voc
Chloroform
~
~
~
--
~
~
~
--
--
a
a
a
a
a
a
a
voc
T etrachloroethylene
—
—
~
~
--
~
~
—
~
a
a
a
a
a
a
a
voc
T richloroethylene
--
~
~
~
~
--
~
~
~
a
a
a
a
a
a
a
voc
Vinyl chloride
~
--
~
~
~
~
--
~
~
a
a
a
a
a
a
a
A-rated:< 15% CV
B-rated: Between 15%CV to25% CV
Does Not Meet: >25% CV or did not report Precision (required in the NATTS Workplan Template since 2012)
No data available
a: Per the NATTS Workplan template, analytical replicates were required to be reported to AQS for this sampling year
b: The primary and/or replicate value were less than the MDL, so no calculation could be made.
Page 24 of 26
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Appendix A. Equipment Inventory
Pollutant Type Year(s) Manufacturer/Model, Extraction Type, and Year
Sampling Equipment
Carbonyls
2003-2004
ATEC 800 Sequential Sampler (Year Deployed: 2003)
2005-2009
ATEC 8000 Cartridge Sampler (Year Deployed: 2005)
2010-2018
ATEC 8000 Cartridge Sampler (Year Deployed: 2010)
Chormium VI
2005-2006
RM Environmental Systems (Year Deployed: 2005)
2007-2010
ATEC 3400 Toxic Air Sampler (Year Deployed: 2007)
2011-2013
ATEC model 3400 Toxic Air Sampler (2 units) (Year Deployed: 2007, 2008)
PAHs
2007-2010
Anderson Hi-Vol Sampler (Year Deployed: unknown)
2011-2011
Tisch Environmental TE-1000 PUF Sampler (2 units) (Year Deployed: 2006)
2012-2012
Tisch Environmental TE-1000 PUF Sampler (2 units) (Year Deployed: 2006/<2000)
2013-2015
Tisch 1000 sampler (Year Deployed: <2000)
2016-2018
Tisch Puf Hi-Vol (2) (Year Deployed: 2016)
PM10 Metals
2003-2010
Anderson A-1200 Hi-Volume Sampler (Year Deployed: <1980)
2011-2015
Anderson A-1200 Hi-Volume Sampler (2 units) (Year Deployed: 2000)
2016-2018
Graseby-Andersen Hi-Vol (2) (Year Deployed: 2016)
VOCs
2003-2004
Anderson A-1200 Hi-Volume Sampler (Year Deployed: 2003)
2005-2009
ATEC 2200 Toxic Air Sampler (Year Deployed: 2005)
2010-2018
ATEC model 2200 Toxic Air Sampler (Year Deployed: 2010)
Analytical Equipment
Carbonyls
2003-2003
HPLC with PE LC-95 UV/Vis detection (Year Deployed: unknown)
2004-2010
Waters HPLC/ PDA detection (Year Deployed: 2004)
2011-2015
PC 200 HPLC/ variable wavelength detection (Year Deployed: 2004)
2016-2018
PE Series 200 HPLC/UV-VIS (1); PE Flexar HPLC/UV-VIS (2) (Year Deployed: 2016)
Chormium VI
2005-2013
Dionex 300 ion chromatography system (Year Deployed: 2001)
PAHs
2007-2007
HP/Agilent 5890/5971 GC/MS (Year Deployed: 1990)
2008-2011
HP/Agilent 5890/5971 GC/MS (Year Deployed: 2008)
2012-2012
HP/Agilent 5890/5971 GC/MS; Agilent 5973/6890 (Year Deployed: 2008/2000)
2013-2015
Agilent 5973/6890 (Year Deployed: 2000)
2016-2018
Agilent 6890/5973N GC/MS (Year Deployed: 2016)
PM10 Metals
2003-2005
PE ELAN 9000 ICP-MS (Year Deployed: 2002)
2006-2018
PE ELAN 9000 ICP-MS (Year Deployed: 2006)
VOCs
2003-2004
HP/Agilent 5890/5972 GC/MS (Year Deployed: 1993)
2005-2006
HP/Agilent 6890/5973 GC/MS (Year Deployed: 2005)
2007-2018
HP/Agilent 6890N/5973 GC/MS (Year Deployed: 2007)
Preconcentrator Equipment
VOCs
2003-2005
Entech 7100 (1), Entech 7016CA (2) (Year Deployed: 1998)
2006-2010
Entech 7100 (1), Entech 7016CA (2); Entech 7100 (3), Entech 7016CA (4) (Year Deployed: 1998 (1,2), 2006 (3,4))
2011-2015
Entech 7100A (1), Entech 7016CA (2) (Year Deployed: 1998 (1), 2006 (2))
2016-2018
Entech 7100 (Year Deployed: 2016)
Page 25 of 26
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Appendix A. Equipment Inventory
Pollutant Type Year(s) Manufacturer/Model, Extraction Type, and Year
Standards Preparation Equipment
VOCs
2003-2010
Entech 4560SL (dynamic dilution) (Year Deployed: 1995)
2011
Entech model 4560L (1),Entech model 4560A (2) (hot) (Year Deployed: 1995 (1), 2010 (2))
2012-2015
Entech 4560A (dynamic dilution) (Year Deployed: 2010)
2016-2018
Entech 4600 (dynamic dilution) (Year Deployed: 2016)
Canister Cleaning Equipment
VOCs
2003-2013
Entech 3100SL (Hot) (Year Deployed: 2000)
2011-2015
Entech model 3100SL (hot) (Year Deployed: 2000)
2016-2018
Entech 3100 (3)(Hot) (Year Deployed: 2016)
PM10 Extraction Equipment
PM10 Metals
2003-2011
Environmental Express (Hotblock) (Year Deployed: 2000)
2012-2018
Environmental Express (Hotblock) (Year Deployed: 2012)
Chromium VI Extraction Equipment
Chormium VI
2005-2010
Branson 8510 (Sonicator) (Year Deployed: 2001)
2011
Branson 8510 Sonicator/Branson Shaker (Year Deployed: 2001/2011)
2012-2013
Branson Shaker (Year Deployed: 2011)
PAHs Extraction Equipment
PAHs
2007-2011
Dionex -300 (ASE) (Year Deployed: 2004)
2012
Dionex -300 (ASE); Electrothermal 6 position heating mantle (Year Deployed: 2004/1996)
2013-2015
Electrothermal 6 position heating mantle (Soxhlet) (Year Deployed: 1996)
2016-2018
Electrothermal 6 position heating mantle (Soxhlet) (Year Deployed: 2015)
Page 26 of 26
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