Houston, TX NATTS Network Assessment Review
• Established 2003: Carbonyls, PMio Metals, and VOCs
o Chromium VI added in 2006; ended in in 2013
o PAHs added in 2007
• For the NATTS Network Assessment (2003-2018):
o 0 of 18 Method Quality Objective (MQO) Core HAPs were included in the national trends
¦ All HAPs: Sampling ended mid-year for 2018.
¦ Benzene: Reported MDL to NATTS Target MDL ratio greater than 2.0
¦ 1.3-Butadiene. Chloroform. Tetrachloroethvlene. Trichloroethvlene. and Vinyl Chloride:
Reported MDL to NATTS Target MDL ratio greater than 2.0 from 2013-2018 and Analytical
precision data missing from 2013-2018.
¦ Carbon Tetrachloride: Reported MDL to NATTS Target MDL ratio greater than 2.0 from 2013-
2018, Analytical precision data missing from 2013-2018, and Bias % Difference was outside of
±35% in 2015.
o 139 of 253 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 some pollutants (acetaldehyde, formaldehyde, naphthalene, and nickel (PMio)).
o 100% Reporting of Datasets
• Method Quality Objectives (MQO): 2003-2018
o Completeness: Met 85% completeness in 244 of 253 pollutant datasets
o Method Detection Limits: Met MDL Target Ratio of 1.00 in 134 of 267 pollutant datasets
o Bias: Met ±25% for 191 of 206 pollutant datasets
o Overall Method Precision: Met <15% CV for 64 of 99 pollutant datasets
o Analytical Method Precision: Met <15% CV for 6 of 125 pollutant datasets
• Analytical Laboratories for 2018
voc
Carbonyl
PMio Metals
Chromium VI
PAHs
TCEQ
TCEQ
TCEQ
NA
TCEQ
• Equipment Year Deployed (Through 2014)a
Equipment Type
VOC
Carbonyl
PMio Metals
Chromium VI
PAHs
Sampler
2004
2013
2009
2006
2007
Analytical
2014
2012
2010
2001
2011
Preconcentrator
2013
NA
NA
NA
NA
Standards Preparation
Unknown
NA
NA
NA
NA
Canister Cleaning
2007
NA
NA
NA
NA
Extraction
NA
NA
2010
2011
2011
a: Survey results from 2015-2018 were not returned to EPA
-------
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: Houston, TX
Site Information Figure 2. NATTS Site Location
Region
6
NATTS Site Type
Urban
County
Harris
AQS Site Code
48-201-1039
NATTS Operating Agency
TX Commission on Environ. Quality
Latitude
29.670025
Longitude
-95.128508
AQS Land Use
Residential
AQS Location Setting
Urban/City Center
10-Mile Population
4,336,853
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
Acetaldehyde
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
—
Arsenic (PM10)
Na
Na
Na
Na
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
~
Benzene
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na
~
Benzo(a)pyrene
—
—
—
—
~
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
—
Beryllium (PM10)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
—
Butadiene, 1,3-
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na'b
Na"b
Na
Na
Na
Na"b
--
Cadmium (PM10)
Na
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
~
Carbon tetrachloride
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na'b
Na'b
Na'b
Na-b-c
Na'b
Na'b
~
Chloroform
Y
Y
Y
Na
Na
Na
Na
Na
Na
Na'b
Na'b
Na'b
Na'b
Na
Na'b
-
Chromium VI
--
-
Nd
Ne
Na
Na
Y
Y
Y
Y
~
--
~
~
~
-
Formaldehyde
Nf
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Na'b
Y
Y
-
Lead (PM10)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
--
Manganese (PM10)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
—
Naphthalene
~
--
~
~
~
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
--
Nickel (PM10)
Na
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
Tetrachloroethylene
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na'b
Na"b
Na'b
Na'b
Na'b
Na'b
-
T richloroethvlene
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na-b
Na"b
Na'b
Na'b
Na'b
Na'b
—
Vinyl chloride
Na
Na
Na
Na
Na
Na
Na
Na
Na
Na'b
Na
Na'b
Na'b
Na
Na'b
~
a: Reported MDL to NATTS Target Ratio greater than 2.0.
Anaytical precision data not reported.
c: Percent Bias outside of ±35%.
: Pollutant was expected, but not sampled at this site for this year.
c: Completeness was less than 75% based on l-in-6 day sampling.
f: MDL not reported to EPA's Air Quality System
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 Houston, TX
Analyte
Units
# Data
Records
%
Detection
Arithmetic Mean3
Percentile Valueb
5th
10th
25th
50th
75th
90th
95th
Acetaldehyde
(ig/m3
920
100%
1.56 ± 0.07
0.27
0.49
0.80
1.29
2.01
3.01
3.78
Arsenic (PM10)
ng/m3
874
100%
2.23 ± 0.21
0.39
0.49
0.55
0.99
1.84
7.64
11.43
Benzene
(ig/m3
931
97%
1.51 ± 0.08
0.34
0.41
0.69
1.11
1.96
3.05
4.10
Benzo(a)pyrene
ng/m3
665
45%
0.03 ± 0.01
ND
ND
ND
ND
0.03
0.06
0.09
Beryllium (PM10)
ng/m3
874
71%
0.235 ± 0.016
ND
ND
ND
0.0707
0.503
0.519
0.529
Butadiene, 1,3-
l-tg/m3
931
60%
0.205 ± 0.043
ND
ND
ND
0.012
0.227
0.501
0.790
Cadmium (PM10)
ng/m3
874
71%
0.29 ± 0.02
ND
ND
ND
0.08
0.51
0.54
1.02
Carbon Tetrachloride
l-tg/m3
932
97%
0.61 ± 0.01
0.41
0.50
0.56
0.62
0.68
0.75
0.79
Chloroform
l-tg/m3
932
93%
0.154 ± 0.009
ND
0.024
0.096
0.145
0.198
0.291
0.346
Chromium VI
ng/m3
395
86%
0.078 ± 0.008
ND
ND
0.03
0.053
0.104
0.172
0.228
Formaldehyde
l-tg/m3
921
100%
2.84 ± 0.16
1.03
1.22
1.61
2.23
3.14
4.86
6.88
Lead (PM10)
ng/m3
874
100%
2.84 ± 0.19
0.85
0.98
1.06
1.98
3.08
6.11
10.07
Manganese (PM10)
ng/m3
874
100%
5.84 ± 0.39
1.64
1.98
2.13
4.16
6.96
11.33
15.68
Naphthalene
ng/m3
665
100%
51.68 ± 2.87
15.10
18.45
28.03
42.31
64.70
95.03
115.71
Nickel (PM10)
ng/m3
874
99%
2.16 ± 0.10
0.39
0.59
1.17
2.00
2.46
4.09
4.41
Tetrachloroethylene
l-tg/m3
932
85%
0.14 ± 0.01
ND
ND
0.03
0.07
0.14
0.29
0.43
Trichloroethylene
l-tg/m3
932
53%
0.033 ± 0.004
ND
ND
ND
0.027
0.053
0.057
0.112
Vinyl Chloride
l-tg/m3
932
52%
0.033 ± 0.005
ND
ND
ND
0
0.025
0.102
0.154
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
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
Carbonyls
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
PM10 Metals
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
Chromium VI
-
-
NONE
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ/ERG
ERG
ERG
ERG
--
--
--
--
--
PAHs
-
-
-
-
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
TCEQ
Not Applicable
TCEQ: Texas Commission on Environmental Quality
ERG: Eastern Research Group, Inc.
Page 5 of 26
-------
Figure 3. Houston, TX Annual Average Concentrations
Houston, TX
Annual Averages:
Acetaldehyde
"Stj
s
u
o
U
4.0
3.2
2.4
1.6
0.8
0.0
<
~
<~
L <
~
I I It
1 f
> i
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Houston, TX
Annual Averages:
Benzene
3.0
2.4
A 1-8
_o
re
O 0.6
0.0
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Houston, TX
Annual Averages:
Arsenic (PM10)
2.5
2.0
3 15
3
§ 10
53
u
U °-5
0.0
i
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Houston, TX
Annual Averages:
Benzo(a)pvrene
o.io
0.08
"5b
0.06
g 0.04 —
0.02
0.00
2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Page 6 of 26
-------
Figure 3. Houston, TX Annual Average Concentrations
0.6
0.5
O 0.3
cd
y
5 02
U
0.0
Houston, TX
Annual Averages:
Beryllium (PM10)
i
~ > *, ~ ~ . *
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
3.0
2.4
£
5 18
C
O
| 1.2
c
o
§ 0.6
u
0.0
Houston, TX
Annual Averages:
1,3-Butadiene
-i 1 1—
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
a
o
1.0
0.8
0.6
0.4 -
8 °-2
0.0
Houston, TX
Annual Averages:
Cadmium (PM10)
I
~ ~
~ * i
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
3.0
2.4
1.8
1.2 --
C3
fc!
s
o
8 °-6
Houston, TX
Annual Averages:
Carbon Tetrachloride
0.0 ~r r r r t* t r t r t r t* t r r t i
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Page 7 of 26
-------
0.20
0.15
It
.2 °-10
re
§ 0-05
0.00
Figure 3. Houston, TX Annual Average Concentrations
Houston, TX
Annual Averages:
Chloroform
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
10.0
8.0
~3jj
-3 6.0
1 40
O
O
U 2.0
0.0
Houston, TX
Annual Averages:
Formaldehyde
—
i
~
\
f
2 £
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
fit
V '
o
re
o
U
0.75
0.60
0.45
0.30
0.15 -
0.00 —
Houston, TX
Annual Averages:
Hexavalent Chromium
2005 2006 2007 2008 2009 2010 2011 2012 2013
Year
"5tj
15.0
12.0
a 9.0
_o
re
£3
s
6.0
P 3.0
J
Houston, TX
Annual Averages:
Lead (PM10)
1
* * *
0.0 -t 1 t 1 i t 1 i i 1 i i-
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Page 8 of 26
-------
Figure 3. Houston, TX Annual Average Concentrations
Houston, TX
Annual Averages:
Manganese (PM10)
12.0
9.6
"fci
O
re
O
u
4.8
0.0
2003 2004 2005 2006 20072008 2009 2010 2011 2012 2013 20142015 2016 2017 2018
Year
100.0
80.0 --
60.0 —
re
h 40.0
o
O 20.0
0.0
Houston, TX
Annual Averages:
Naphthalene
1
a
t
2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
4.0 -
3.2
2.4
1.6
U 0.8
0.0
Houston, TX
Annual Averages:
Nickel (PM10)
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
3.0
2.4
=L 1.8
|2
I
u
o
O
0.6
0.0
Houston, TX
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. Houston, TX Annual Average Concentrations
Houston, TX
Annual Averages:
Trichloroethylene
0.10 -|
0.08
I—*
^0 0 6
O
5 0.04 -
53
-------
Figure 4. Houston, TX - 3-Year Rolling Average Concentrations
5.0
4.0
01,
G,
.1 3'°
CO
53
o
§ 2.0
O
1.0
0.0
Houston, TX
3-Year Rolling Averages:
Acetaldehyde
i i
~ ~ ~
* *
* *
^ ^/ft, ^ ^
°OS °6 °7 °S °9 J0 JJ *2 1} J1 *S *6 J? °1$
Years
Houston, TX
3-Year Rolling Averages:
Arsenic (PM10)
10.0
a
v
S
u
o
o
8.0 ¦-
6.0
4.0
2.0
0.0
I
1
i
*
t
^ # ~ ~ ~ ^ ^ * i
^ ^ ^ ^ *0, ^/, ^ *>/x ^
^°Os °Os ^°Oy ^°Os ^°Os *-°/0 -°J/ ~^°/j ^°/j "°/s ^°I6 ^°/? ~~°/g
Years
Page 11 of 26
-------
Figure 4. Houston, TX - 3-Year Rolling Average Concentrations
o
ct:
o
U
3.0
2.4
1.8
1.2
0.6
0.0
Houston, TX
3-Year Rolling Averages:
Benzene
o
o
<~
I
I
\
1
"-~h
1
1
;
i
i
i i
f
i
t
i
i
i -
%> %> %, % X X X- X X
Years
Houston, TX
3-Year Rolling Averages:
Benzo(a)pvrene
o.io
0.08
~5b
a
¦2 0.06
a
§
u
<= 0.O4
u
0.02
0.00
f
?
^ ^ ^ ^ ^ ^ ^
Years
'°Og ^°/0 2°f/ ^°/j <^°'i "°'s ^"0/r> J°J? ^°'g
Page 12 of 26
-------
Figure 4. Houston, TX - 3-Year Rolling Average Concentrations
Houston, TX
3-Year Rolling Averages:
Beryllium (PM10)
~otj
1.0
0.8
0.6
y 04
o
u
0.0
~ ~ ~
~ ~
^°0j. ^ ^°0S *°0? ^°Og ^°Og " %, . ^°.
~~°Os "°06 "°0? "°0S "°Og -°J0
'//
Years
Vj
'-?o.
y6
20;
<¦>/#
Houston, TX
3-Year Rolling Averages:
1,3-Butadiene
o
U
1.0
0.8
0.6
0.4
0.0
<~
o
<
~
<
~
<
~
*
*
*
*
*
*
*
~
*
^ ^ ^ *>/& Jb, *0, -%>, *>,
°Os °Os °0? °Og ^°09 °/0 °t/ °/j °/s /(> °t? "°/s
Years
Page 13 of 26
-------
Figure 4. Houston, TX - 3-Year Rolling Average Concentrations
1.0
Houston, TX
3-Year Rolling Averages:
Cadmium (PM10)
0.8
0.6
O
cc
*
* f
a 0.4
*-4
o
o
0.2
0.0
^ 2o0 % ^ ^ •?«/, -% -0,
°Qs ^ ^°0,J -?0/0 ^O/j JO/J -0/j -0/^ 20fs -0j6 Jo;? 30/s
Years
Houston, TX
3-Year Rolling Averages:
Carbon Tetrachloride
n
*
$
f
*
• *
~
~
i
i
T
s
o
g
' "*¦
*
*
~
53
o
o
U
^ ^ 3oOq -\a
°Os °% <%> -"<<9
Years
, ^ ^ ^
> ^x, ^
Page 14 of 26
-------
Figure 4. Houston, TX - 3-Year Rolling Average Concentrations
Houston, TX
3-Year Rolling Averages:
Chloroform
J
4 ~
O
- T -
I
I
<~
1
i
i
1
i
1
i
t
I
Years
Houston, TX
3-Year Rolling Averages:
Formaldehyde
10.0 -i—
8.0 --
.2 6.0 —
C3
Years
Page 15 of 26
-------
Figure 4. Houston, TX - 3-Year Rolling Average Concentrations
Houston, TX
3-Year Rolling Averages:
Hexavalent Chromium
0.25
0.20
a
O 0.15
a
53
u
§ 0.10
u
0.05
0.00
<
~
<
~
*
* *
~
-\s„
%
-°os
*°09
-------
Figure 4. Houston, TX - 3-Year Rolling Average Concentrations
10.0
Houston, TX
3-Year Rolling Averages:
Manganese (PM10)
a
§ 6.0
i i i i
t
o
U
4.0
2.0
0.0
^ ^ -V,
-°0
'% ^°Og 3°0
-------
Figure 4. Houston, TX - 3-Year Rolling Average Concentrations
o
IS
o
U
5.0
4.0
3.0
2.0
1.0 --
0.0 +-
Houston, TX
3-Year Rolling Averages:
Nickel (PM10)
I
* i
*i
~
$
^°0? •?% 20/0
~-°OX -°0g ^°/j "°/4 "°/S "°/6 "°/? "°/s
Years
Houston, TX
3-Year Rolling Averages:
Tetrachloroethvlene
o
U
0.25
0.20
0.15
0.10
0.05
0.00
¦r
T
<
o
~
<~
n
O
o
o
¦¦
¦¦
}
I
T
I
+
±
I
I
I
^ ^ , *>, So,
i% % °o? °Qs "% 0O % °Jj °'-t °'s °'6 °'s
Years
Page 18 of 26
-------
Figure 4. Houston, TX - 3-Year Rolling Average Concentrations
Houston, TX
3-Year Rolling Averages:
Trichloroethvlene
S
o
.-H
o
O
0.10
0.08
0.06
0.04 --
0.02
0.00
o
T
T
T
1—
X
1
1
1
t
<~
< ~
<~
<~
o
o
o
T
¦¦
T
^ 2o0 *00 2o0 % Jo, *0, •?ix» *°'
°/j % °'s
% °'7
Does not meet MQO or wasn't able to collect enough samples
Page 19 of 26
-------
Table 6. NATTS Network Assessment: MQO#l - Completeness Percentage at Houston, TX
Pollutant Group
Year
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyl
Acetaldehyde
92
95
95
87
93
95
97
97
93
95
97
98
98
100
95
--
Carbonyl
Formaldehyde
92
95
95
87
93
95
97
97
93
97
97
98
98
100
95
--
Chromium VI
Chromium VI
--
--
a
30
93
85
95
98
98
100
--
--
--
"
--
--
PAH
Benzo(a)pyrene
--
--
--
--
93
95
97
90
98
100
98
100
100
100
95
--
PAH
Naphthalene
~
--
--
--
93
95
97
90
98
100
98
100
100
100
95
--
PM10 Metals
Arsenic (PM10)
92
97
87
90
92
92
98
97
98
100
100
100
100
100
97
--
PM10 Metals
Beryllium (PM10)
92
97
87
90
92
92
98
97
98
100
100
100
100
100
97
--
PM10 Metals
Cadmium (PM10)
92
97
87
90
92
92
98
97
98
100
100
100
100
100
97
--
PM10 Metals
Lead (PM10)
92
97
87
90
92
92
98
97
98
100
100
100
100
100
97
--
PM10 Metals
Manganese (PM10)
92
97
87
90
92
92
98
97
98
100
100
100
100
100
97
--
PM10 Metals
Nickel (PM10)
92
97
87
90
92
92
98
97
98
100
100
100
100
100
97
--
voc
Benzene
89
85
97
84
100
95
100
98
93
100
97
100
98
100
93
--
voc
Butadiene, 1,3-
89
85
97
84
100
95
100
98
93
100
97
100
98
100
93
--
voc
Carbon tetrachloride
89
85
98
84
100
95
100
98
93
100
97
100
98
100
93
--
voc
Chloroform
89
85
98
84
100
95
100
98
93
100
97
100
98
100
93
—
voc
T etrachloroethylene
89
85
98
84
100
95
100
98
93
100
97
100
98
100
93
—
voc
T richloroethylene
89
85
98
84
100
95
100
98
93
100
97
100
98
100
93
—
voc
Vinyl chloride
89
85
98
84
100
95
100
98
93
100
97
100
98
100
93
--
A-rated: >85%
B-rated: Between 75% to 85%
Does not meet: <75%
No data available
a: Pollutant was expected, but not sampled at this site for this year.
Page 20 of 26
-------
Table 7. NATTS Network Assessment: MQO#2 - Reported Method Detection Limits (MDLs) at Houston, TX
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
0.31
0.31
0.33
0.33
0.40
0.32
0.32
0.32
0.33
0.16
0.16
0.16
0.22
0.27
0.27
0.27
Carbonyl
Formaldehyde
0.98/0.08a
US/m3
b
0.08
0.08
0.08
0.08
0.08
0.10
0.10
0.11
0.13
1.54
1.54
2.11
1.34
1.34
1.34
Chromium VI
Chromium VI
0.08
ng/m3
--
--
c
2.33
2.33
2.33
0.16
0.04
0.06
0.04
0.06
--
--
--
--
--
PAH
Benzo(a)pyrene
0.91
ng/m3
--
--
"
--
0.60
0.07
0.07
0.06
0.07
0.06
0.60
0.60
0.60
0.60
0.60
0.60
PAH
Naphthalene
29.00
ng/m3
~
--
"
--
0.02
0.01
0.01
0.06
0.004
0.005
0.02
0.02
0.02
0.02
0.02
0.02
PM10 Metals
Arsenic (PM10)
0.23
ng/m3
59.78
3.74
5.65
9.57
0.06
0.06
0.07
0.58
0.26
0.26
0.30
0.30
0.13
0.22
0.22
b
PM10 Metals
Beryllium (PM10)
0.42
ng/m3
0.74
0.26
0.22
0.22
0.002
0.002
0.43
0.07
0.07
0.07
0.07
0.07
0.07
0.07
0.07
b
PM10 Metals
Cadmium (PM10)
0.56
ng/m3
3.36
1.79
0.09
0.09
0.002
0.002
0.18
0.05
0.05
0.054
0.09
0.09
0.05
0.04
0.04
b
PM10 Metals
Lead (PM10)
15.0
ng/m3
0.79
0.24
0.05
0.05
0.0002
0.0002
0.09
0.01
0.001
0.001
0.01
0.01
0.002
0.002
0.01
b
PM10 Metals
Manganese (PM10)
5.0
ng/m3
1.12
0.40
0.06
0.06
0.0004
0.0004
0.11
0.02
0.02
0.020
0.02
0.02
0.02
0.08
0.09
b
PM10 Metals
Nickel (PM10)
2.1
ng/m3
2.53
1.79
0.56
0.56
0.001
0.001
1.10
0.12
0.08
0.019
0.11
0.11
0.10
0.05
0.06
b
voc
Benzene
0.13
pg/m3
7.62
7.62
7.62
7.62
6.64
6.65
6.65
6.65
6.64
6.64
6.64
6.64
6.64
6.64
6.64
6.64
voc
Butadiene, 1,3-
0.10
pg/m3
6.00
6.00
6.00
5.97
5.97
5.99
5.99
5.99
5.97
5.97
5.97
5.97
5.97
5.97
5.97
5.97
voc
Carbon tetrachloride
0.17
pg/m3
14.71
14.71
14.71
14.80
9.99
10.01
10.01
10.01
9.99
9.99
9.99
9.99
9.99
9.99
9.99
9.99
voc
Chloroform
0.50
pg/m3
2.00
2.00
2.00
2.05
2.05
2.06
2.06
2.06
2.05
2.05
2.05
2.05
2.05
2.05
2.05
2.05
voc
Tetrachloroethylene
0.17
pg/m3
9.41
9.41
9.41
9.58
9.58
9.59
9.59
9.59
9.58
9.58
9.58
9.58
9.58
9.58
9.58
9.58
voc
T richloroethylene
0.5/0.2a
pg/m3
3.20
3.20
3.20
3.12
3.12
3.12
3.12
3.12
3.12
3.12
7.79
7.79
7.79
7.79
7.79
7.79
voc
Vinyl chloride
0.11
pg/m3
3.91
3.91
3.91
3.95
3.95
3.95
3.95
3.95
3.95
3.95
3.95
3.95
3.95
3.95
3.95
3.95
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: No MDL was reported in EPA's AQS.
c: Pollutant was expected, but not sampled 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 Houston, TX
Pollutant Group
Pollutant Name
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyls
Acetaldehyde
8.7
7.4
2.0
-4.7
2.3
-17.4
-0.4
-7.6
a
-0.4
1.0
a
-3.5
1.5
-18.8
Carbonyls
Formaldehyde
6.5
6.7
-7.0
-2.8
8.0
-12.3
1.2
-5.8
a
-5.8
-5.6
a
-15.1
-7.9
-9.0
Chromium VI
Chromium VI
--
a
a
a
a
a
10.5b
a
19.5
-6.5
--
--
--
--
--
PAH
Benzo(a)pyrene
--
--
--
c
c
-5.5
-41.3
-11.2
14.6
C
-19.4
c
C
C
C
PAH
Naphthalene
--
--
--
c
c
-9.2
-49.6
-23.7
32.8
C
-2.1
c
C
C
C
PM10 Metals
Arsenic (PM10)
C
10.5
4.5
8.1
27.8
4.8
15.7
2.7
13.5
4.1
-49.8
a
-5.0
15.6
a
PM10 Metals
Beryllium (PM10)
C
24.8
7.1
18.9
11.8
10.6
16.8
10.7
17.1
0.8
d
a
-12.2
-5.8
-5.1
PM10 Metals
Cadmium (PM10)
c
-5.1
-3.8
3.6
24.4
6.6
10.0
5.7
9.0
2.2
d
a
-12.5
-0.5
-9.4
PM10 Metals
Lead (PM10)
c
-0.8
1.3
-1.4
4.4
-15.8
-2.5
3.3
12.8
3.1
9.7
a
-8.9
-4.5
-11.4
PM10 Metals
Manganese (PM10)
c
12.2
-10.0
-14.1
-17.3
-26.2
10.4
4.3
11.0
-7.7
9.3
a
-8.2
1.5
-8.3
PM10 Metals
Nickel (PM10)
c
5.8
-0.1
-10.1
-0.8
-6.2
9.2
11.4
3.4
2.2
e
a
20.9
20.8
-0.6
voc
Benzene
__f
3.8
4.5
-6.2
21.5
-3.4
-5.5
13.2
a
4.5
8.9
-1.4
0.7
-13.5
-0.1
voc
Butadiene, 1,3-
-5.6
-26.4
3.3
1.3
-0.6
-1.4
34.1
5.3
a
4.8
10.4
-10.3
1.2
-11.9
-1.3
voc
Carbon tetrachloride
10.1
19.2
10.4
3.5
33.0
4.4
5.1
15.3
a
10.6
18.0
61.7
27.9
18.4
21.0
voc
Chloroform
f
0.2
-12.4
-14.7
-1.4
-17.9
-17.5
-9.1
a
2.8
14.7
-11.2
-4.3
-7.9
-0.3
voc
T etrachloroethylene
f
-19.8
-24.3
-22.1
-39.4
-21.9
-39.8
5.7
a
1.0
-4.9
-29.0
-21.0
-30.4
-22.9
voc
T richloroethylene
-18.7
-14.3
-6.7
-16.3
6.3
-13.4
-23.9
0
a
-0.1
6.6
-15.2
-12.2
-14.9
-5.4
voc
Vinyl chloride
f
-14.0
-3.4
-6.2
-4.2
-3.9
-4.7
-8.2
a
-0.9
22.7
-3.7
-2.8
-7.9
a
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 10.53% in 2010.
c: Pollutant was sampled at this site and year, but no bias data were reported.
d: The Proficiency Test sample for this pollutant was 0; the site reported a concentration as "< MDL", rather than 0. EPA accepted this result.
e: 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.
f: Pollutant not included in the PT sample sent to the lab supporting this site.
Page 22 of 26
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Table 9. NATTS Network Assessment: MQO#4 - Overall Method Precision %CV at Houston, TX
Pollutant Group
Pollutant Name
Overall Method precision % CV
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyls
Acetaldehyde
—
—
—
—
—
—
--
—
--
—
--
—
—
--
—
Carbonyls
Formaldehyde
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Chromium VI
Chromium VI
—
—
a
27.1
6.7
33.1
15.1
11.0
21.9
27.5
—
~
—
--
—
PAH
Benzo(a)pyrene
—
—
—
—
a
4.2
10.6
31.8
6.3
a
a
a
28.7
a
a
PAH
Naphthalene
—
—
—
—
11.5
11.1
13.2
17.6
19.0
9.5
11.4
10.5
10.2
11.3
7.6
PM10 Metals
Arsenic (PM10)
—
—
—
—
—
—
10.7
5.8
20.5
16.0
23.0
5.8
9.5
28.3
—
PM10 Metals
Beryllium (PM10)
—
—
—
—
—
—
0.0
0.0
0.0
9.1
13.2
7.9
12.9
20.8
—
PM10 Metals
Cadmium (PM10)
--
--
--
—
—
—
7.0
9.4
39.1
61.8
14.0
27.0
12.7
13.2
—
PM10 Metals
Lead (PM10)
--
--
~
—
—
—
10.3
12.3
18.9
13.0
20.4
20.9
15.5
25.5
—
PM10 Metals
Manganese (PM10)
--
—
—
—
—
—
12.9
6.4
15.9
15.8
21.6
6.8
10.7
18.8
—
PM10 Metals
Nickel (PM10)
~
~
--
—
—
—
17.2
16.0
23.2
10.9
27.8
19.5
22.3
32.3
—
voc
Benzene
~
~
~
5.1
6.0
8.9
7.8
5.9
4.8
5.4
8.1
2.3
4.8
2.8
1.9
voc
Butadiene, 1,3-
—
—
—
17.0
3.2
14.9
—
20.7
a
a
4.4
5.0
7.8
a
a
voc
Carbon tetrachloride
—
—
—
a
a
a
a
a
a
a
a
a
a
a
a
voc
Chloroform
—
—
—
1.8
a
a
a
a
a
a
a
a
4.4
a
a
voc
T etrachloroethylene
—
—
—
—
—
—
3.7
1.7
a
a
a
a
a
a
a
voc
T richloroethylene
—
—
—
a
a
a
a
a
a
a
a
a
a
a
a
voc
Vinyl chloride
--
--
~
0
9.4
a
a
a
a
4.7
a
a
14.6
a
0
A-rated:< 15% CV
B-rated: Between 15%CV to25% CV
Does Not Meet: >25% CV or did not report Precision
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 Houston, TX
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
a
a
Carbonyls
Formaldehyde
--
~
~
~
--
--
~
~
~
a
a
a
a
a
a
a
Chromium VI
Chromium VI
--
~
~
~
~
--
~
5.0
2.9
3.9
4.9
~
—
~
~
~
PAH
Benzo(a)pyrene
~
--
~
~
~
~
--
~
~
a
a
a
a
a
a
a
PAH
Naphthalene
~
~
--
~
~
~
~
--
~
a
a
a
a
a
a
a
PM10 Metals
Arsenic (PM10)
~
~
~
--
~
~
~
~
--
a
a
a
a
a
a
a
PM10 Metals
Beryllium (PM10)
~
~
~
~
--
~
~
~
~
a
a
a
a
a
a
a
PM10 Metals
Cadmium (PM10)
--
~
~
~
~
--
~
~
~
a
a
a
a
a
a
a
PM10 Metals
Lead (PM10)
~
--
~
~
~
~
--
~
~
a
a
a
a
a
a
a
PM10 Metals
Manganese (PM10)
~
~
--
~
~
~
~
--
~
a
a
a
a
a
a
a
PM10 Metals
Nickel (PM10)
~
~
~
--
~
~
~
~
--
a
a
a
a
a
a
a
voc
Benzene
~
~
~
~
5.1
~
~
~
~
a
a
a
a
a
a
a
voc
Butadiene, 1,3-
--
~
~
~
1.4
--
~
~
~
a
a
a
a
a
a
a
voc
Carbon tetrachloride
~
--
~
~
b
~
--
~
~
a
a
a
a
a
a
a
voc
Chloroform
~
~
--
~
b
~
~
--
~
a
a
a
a
a
a
a
voc
T etrachloroethylene
~
~
~
--
b
~
~
~
--
a
a
a
a
a
a
a
voc
T richloroethylene
~
~
~
~
b
~
~
~
~
a
a
a
a
a
a
a
voc
Vinyl chloride
--
~
~
~
b
--
~
~
~
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
2003-2005
ATEC 8000 Cartridge Sampler (Year Deployed: 2003)
2006-2009
ATEC 8000 Cartridge Sampler (Year Deployed: 2006)
2010-2011
ATEC 8000 Cartridge Sampler (Year Deployed: 2010)
2012-2013
ATEC 8000 Cartridge Sampler(l); custom built (2) (Year Deployed: 2010 (1);
unknown (2))
2014
Custom-built (Year Deployed: 2013)
Chormium VI
2005
NONE
2006-2013
RM Environmental Systems 924 Toxic Air Sampler (Year Deployed: 2006)
PAHs
2007-2014
Thermo Andersen GPS-1 PUF Sampler (Year Deployed: 2007)
PM10 Metals
2003
Wedding & Associates Hi-Volume PM10 Sampler (Year Deployed: <2003)
2004
Wedding & Associates Hi-Volume PM10 Sampler (Year Deployed: 2004)
2005-2008
Andersen Hi-Volume PM10 Sampler (Year Deployed: 2004)
2009-2014
Tisch Environmental TE-10557 Hi Vol PM10 Sampler (2 units) (Year Deployed:
2009)
VOCs
2003
Entech 1800 Dual Channel Field Sampler (Year Deployed: 2003)
2004-2014
Entech 1800 Dual Channel Field Sampler (Year Deployed: 2004)
Analytical Equipment
Carbonyls
2003-2011
Waters Alliance 2695/996 PDA detection, HP/Agilent 1050 HPLC (Year Deployed:
<2003)
2012-2014
WatersAcquity/PDA detection UPLC (Year Deployed: 2012)
Chormium VI
2005
NONE
2006-2009
Metrohm-Peak IC (Year Deployed: unknown)
2010-2013
Dionex 300 IC (Year Deployed: 2001)
PAHs
2007-2010
HP/Agilent 6890/5973 GC/MS (Year Deployed: 1999)
2011-2014
HP/Agilent 7890/5970C GC/MS (Year Deployed: 2011)
PM10 Metals
2003
UNKNOWN (Year Deployed: unknown)
2004-2010
Thermo/VG Elemental PQ 3 ICP-MS (Year Deployed: unknown)
2011-2014
GC/Bruker 820-MS (Year Deployed: 2010)
VOCs
2003-2009
HP/Agilent 6890/5973 GC/MS (Year Deployed: 2002)
2010-2013
HP/Agilent 7890/5975D GC/MS (Year Deployed: 2010)
2014
HP/Agilent 7890/5975D GC/MS (1); HP/Agilent 7890/5977A (2) (Year Deployed:
2010(1); 2014(2))
Preconcentrator Equipment
VOCs
2003-2009
Entech 7100A (Year Deployed: 2002)
2010
Entech 7150 (Year Deployed: 2010)
2011
Entech 7100A (2 units) (Year Deployed: 2002, 2010)
2012
Entech 7100A (Year Deployed: 2010)
2013-2014
Entech 7100A (1); Entech 7200 (2) (Year Deployed: 2010 (1); 2013 (2))
Standards Preparation Equipment
VOCs
2003-2009
(1) Custom-built, (2) Druck pressure gauge, (3) SGE syringe ((1) Dynamic Dilution,
(2) Pressure Dilution, (3) Syringe Dilution) (Year Deployed: unknown)
2007-2009
Entech 3100 (1); Entech 3100A (2) (Hot) (Year Deployed: 1999 (1); 2007 (2)
2010-2014
certified Druck DPI 600 pressure calibrator (Year Deployed: unknown)
Page 25 of 26
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Appendix A. Equipment Inventory
Pollutant Type
Year(s)
Manufacturer/Model, Extraction Type, and Year
Canister Cleaning Equipment
2003-2006
Entech 3100 (Hot) (Year Deployed: 1999)
VOCs
2007-2010
Entech 3100 (1); Entech model 3100A (2) (hot) (Year Deployed: 1999 (1); 2007 (2))
2011-2014
Entech Model 3100A (Hot) (Year Deployed: 2007)
PM10 Extraction Equipment
PM10 Metals
2003-2009
Unknown (Microwave) (Year Deployed: unknown)
2010-2014
Environmental Express (Hotblock) (Year Deployed: 2010)
Chromium VI Extraction Equipment
2005
NONE
2006-2009
unknown (Year Deployed: unknown)
Chormium VI
2010
Branson 8510 (Sonicator) (Year Deployed: 2001)
2011-2011
Branson 8510 Sonicator/ Branson Shaker (Year Deployed: 2001/2011)
2012-2013
Branson Shaker (Year Deployed: 2011)
PAHs Extraction Equipment
PAHs
2007-2008
Dionex -300 (ASE) (Year Deployed: 2003)
2009-2014
Dionex -350 (ASE) (Year Deployed: 2011)
Page 26 of 26
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