Grand Junction, CO NATTS Network Assessment Review
• Established 2004: Carbonyls, PMio Metals, and VOCs
o Added Chromium VI in 2005, completed in 2013
o Added PAHs in 2008
• For the NATTS Network Assessment (2004-2018):
o 17 of 18 Method Quality Objective (MQO) Core HAPs were included in the national trends
¦ Carbon Tetrachloride: Percent Completeness was 83% and Bias % Difference was 40.2%
o 245 of 253 pollutant datasets were suitable for trends analysis
o Annual Average and 3-Year Rolling Average Concentrations were generally decreasing over time,
o 100% Reporting of Datasets
• Method Quality Objectives (MQO): 2004-2018
o Completeness: Met 85% completeness in 246 of 253 pollutant datasets
o Method Detection Limits: Met MDL Target Ratio of 1.00 in 241 of 256 pollutant datasets
o Bias: Met ±25% for 206 of 223 pollutant datasets
o Overall Method Precision: Met <15% CV for 139 of 177 pollutant datasets
o Analytical Method Precision: Met <15% CV for 148 of 171 pollutant datasets
• Analytical Laboratories for 2018
voc
Carbonyl
PMio Metals
Chromium VI
PAHs
ERG
ERG
ERG
NA
ERG
• Equipment Year Deployed
Equipment Type
VOC
Carbonyl
PMio Metals
Chromium VI
PAHs
Sampler
2018
2018
1997
2005
2008
Analytical
2010
2018
2015
2001
2015
Preconcentrator
2007
NA
NA
NA
NA
Standards Preparation
1985
NA
NA
NA
NA
Canister Cleaning
2011
NA
NA
NA
NA
Extraction
NA
NA
2014
2011
2004
-------
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 Site Type Urban
AQS Site Code
08-77-0017/08-77-0018
NATTS Operating Agency
CO Dept. of Public Health and Environ.
Longitude
-108.561295/-108.561605
AQS Land Use
Commercial
AQS Location Setting
Urban/City Center
10-Mile Population
147.554
Region
County
Mesa
Latitude
39.06378/39.064250
Site Information
NATTS Monitoring Site Report: Grand Junction, CO
Figure 2. NATTS Site Location
Pollutant Datasets Evaluation: Suita
ale for Trends (Y=yes; Y(T
=yes, and uset
for DQO Trends; IV
=No; "=not rated
Final Pollutant Name
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Acetaldehvde
--
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Arsenic (PM10)
-
Y
Na
Na
Na
Na
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Benzene
--
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
YfD
Y(T)
Benzo(a)pyrene
--
--
—
—
—
~
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Beryllium (PM10)
~
Y
Na
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Butadiene, 1,3-
~
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Cadmium (PM10)
~
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
VCD
Carbon tetrachloride
--
Na
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Nb
Y
Y
Y
Chloroform
~
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Chromium VI
—
—
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
—
~
~
—
—
—
Formaldehyde
~
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Lead (PM10)
~
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Manganese (PM10)
--
Y
Y
Y
Y
Y
Y
Y
Y
Nc
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Naphthalene
~
~
—
--
--
—
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(T)
Y(T)
Y(T)
Y(T)
Y(T)
VCD
T etrachloroethylene
~
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
VCD
Trichloroethylene
~
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Vinyl chloride
--
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
Y(T)
a: Reported MDL to NATTS Target Ratio greater than 2.0
13: Bias % Difference was outside ± 35% and Percent Completeness was <85%.
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 Grand Junction, CO
Analyte
Units
# Data
Records
%
Detection
Arithmetic Mean3
Percentile Va
b
ue
5th
10th
25th
50th
75th
90th
95th
Acetaldehyde
(ig/m3
892
100%
2.36 ± 0.21
0.90
1.09
1.48
2.06
2.75
3.48
4.03
Arsenic (PM10)
ng/m3
865
61%
0.30 ± 0.03
ND
ND
ND
0.19
0.42
0.77
1.32
Benzene
(ig/m3
883
100%
1.20 ± 0.06
0.36
0.44
0.61
0.98
1.51
2.29
2.75
Benzo(a)pyrene
ng/m3
630
79%
0.18 ± 0.02
ND
ND
0.01
0.05
0.23
0.57
0.85
Beryllium (PM10)
ng/m3
865
49%
0.056 ± 0.014
ND
ND
ND
ND
0.016
0.040
0.512
Butadiene, 1,3-
l-tg/m3
882
94%
0.14 ± 0.01
ND
0.04
0.06
0.10
0.18
0.29
0.36
Cadmium (PM10)
ng/m3
865
63%
0.07 ± 0.01
ND
ND
ND
0.03
0.08
0.18
0.27
Carbon Tetrachloride
l-tg/m3
883
98%
0.50 ± 0.01
0.24
0.33
0.43
0.51
0.58
0.65
0.71
Chloroform
l-tg/m3
883
81%
0.08 ± 0.00
ND
ND
0.06
0.09
0.11
0.13
0.15
Chromium VI
ng/m3
506
62%
0.014 ± 0.003
ND
ND
ND
0.009
0.018
0.030
0.042
Formaldehyde
l-tg/m3
892
100%
3.14 ± 0.13
1.24
1.63
2.16
2.83
3.70
4.60
5.39
Lead (PM10)
ng/m3
865
93%
2.52 ± 0.15
ND
0.49
1.05
1.92
3.30
5.28
6.76
Manganese (PM10)
ng/m3
865
99%
9.12 ± 0.40
1.96
2.95
4.96
7.74
11.95
16.92
21.28
Naphthalene
ng/m3
630
100%
109.72 ± 6.80
26.43
35.14
54.05
86.51
132.39
220.93
288.28
Nickel (PM10)
ng/m3
865
68%
0.89 ± 0.18
ND
ND
ND
0.48
1.02
1.90
2.54
T etrachloroethylene
l-tg/m3
883
90%
0.23 ± 0.01
ND
0.01
0.09
0.17
0.31
0.50
0.66
Trichloroethylene
l-tg/m3
882
24%
0.02 ± 0.01
ND
ND
ND
ND
ND
0.07
0.11
Vinyl Chloride
l-tg/m3
882
10%
0.0038 ± 0.0019
ND
ND
ND
ND
ND
0.0063
0.0181
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
2004
2005
2006
2007 2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
VOCs
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
Carbonyls
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
PM10 Metals
CDPHE
IML
IML
IML
IML
IML
CDPHE
CDPHE
CDPHE
CDPHE
CDPHE
ERG
ERG
ERG
ERG
Chromium VI
--
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
--
—
--
--
—
PAHs
--
--
--
--
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
ERG
—: Not Applicable
ERG: Eastern Research Group, Inc. IML: IML Air Science Laboratory
CDPHE: Colorado Department of Public Health and Environment
Page 5 of 26
-------
Figure 3. Grand Junction, CO Annual Average Concentrations
Grand Junction, CO
Annual Averages:
Acetaldehyde
i o.o
8.0
a
C2
O
g
u
a
o
U
6.0
4.0
2.0
0.0
I
* * *
I
i
f * «
i r i i r i i i i i i i i i
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 201J
Year
Grand Junction, CO
Annual Averages:
Benzene
3.5
2.8
s
3 21
C
_o
2 1.4
g
c
o
U 0.7
0.0
Li 1
T+
T
i
i
$ *
1 1 1 1 1 t 1 1 1 1 1 1 1 r
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Grand Junction, CO
Annual Averages:
Arsenic (PM10)
E
"Sb
c
1.6
1.4
1.2
1.0
.2 0-8
¦*—>
C3
S 0.6
o 0.4
U
0.2
0.0
I
I
I
I *
J
i i
-¦
*
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Grand Junction, CO
Annual Averages:
Benzo(a)pyrene
0.60
0.48
"|i> 0.36
a
o
g 0.24
i—i
g
Q
§ 012
0.00
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Page 6 of 26
-------
Figure 3. Grand Junction, CO Annual Average Concentrations
Grand Junction, CO
Annual Averages:
Beryllium (PM,0)
0.40
0.32
s
c
o
0.24
0.16
c
o
CJ
0.08
0.00
* *
* *
~ ~ ~ ~
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Grand Junction, CO
Annual Averages:
Cadmium (PM10)
0.30
0.24
s
3 o.
18
G
O
e
0.12
a
o
v o.
06
0.00
u
i
-i-f-
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Grand Junction, CO
Annual Averages:
1,3-Butadiene
0.30
0.24
E
=L
c
o
0.18
0.12
0.06
0.00
m
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Grand Junction, CO
Annual Averages:
Carbon Tetrachloride
1.0
0.8
B
=L
a
o
G
-------
Figure 3. Grand Junction, CO Annual Average Concentrations
Grand Junction, CO
Annual Averages:
Chloroform
0.20
0.16
to
0.12
G
.o
cd
"S 0.08
-------
Figure 3. Grand Junction, CO Annual Average Concentrations
Grand Junction, CO
Annual Averages:
Manganese (PM,0)
20.0
S
c
15.0
.2 10.0
pS
c
o
d
o
U
5.0
0.0
Hi i t , } i t
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Grand Junction, CO
Annual Averages:
Nickel (PMI0)
4.2
3.6
s 3.0
ol)
c
2.4
o
03
•—
1 8
O
c
o
1.2
U
0.6
0.0
ri
T
4-
~ ~ ~
4
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Grand Junction, CO
Annual Averages:
Naphthalene
250.0
200.0
S
"&»50.0
_g
rtlOO.O --
»-»
s
o
§50.0
0.0
i
1 1 1 1 1 1 1 1 1 1
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Grand Junction, CO
Annual Averages:
Tetrachloroethylene
0.60
_ 0.48
~bi)
30.36
e
_o
"cd
£ 0.24
c
o
^ 0.12
0.00
I i
i
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Page 9 of 26
-------
Figure 3. Grand Junction, CO Annual Average Concentrations
0.25
0.20
6
G
O
S3
P
o
a
o
<-> 0.
'0.15
0.10
05
0.00
Grand Junction, CO
Annual Averages:
Trichloroethylene
$
* * * 1 * ?
i i f i
# *
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
0.075
0.060
3- 0.045
§
+-»
£ 0.030
c
o
U 0.015
0.000
Grand Junction, CO
Annual Averages:
Vinyl Chloride
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
Does not meet MQO
Page 10 of 26
-------
Figure 4. Grand Junction, CO - 3-Year Rolling Average Concentrations
5.0
Grand Junction, CO
3-Year Rolling Averages:
Acetaldehyde
4.0
3.0
2.0
to
c
E
o
c
/; ^/p
'>7
^
Years
Page 11 of 26
-------
Figure 4. Grand Junction, CO - 3-Year Rolling Average Concentrations
2.5
2.0
s
~5o
3 1.5
C
.O
"cs
H
C 10
O
e
o
O
0.5
0.0
1
Grand Junction, CO
3-Year Rolling Averages:
Benzene
i f
4
^ ^ ^ ^ ^ ^ -V.
<%> °0^ *°Og °/0 "°/j °j£ "°/j °/
I 0.16
e
o
U
0.08
0.00
^// ^ ^/j ^/j ^ ^
Years
Page 12 of 26
-------
Figure 4. Grand Junction, CO - 3-Year Rolling Average Concentrations
Grand Junction, CO
3-Year Rolling Averages:
Beryllium (PM10)
0.35
0.28
bfl
e
c
o
c
o
o
c
o
CJ
0.21
0.14
0.07
0.00
"0°s. *°0> 3 ^ ^
to?
^0,
%
%
Vg
"%> ^
^ ^ ^
<5.
*0.
Years
0.30
0.24
Grand Junction, CO
3-Year Rolling Averages:
1,3-Butadiene
to
3 018
c
o
n
0.12
0.06
* M * * * * *
C
-------
Figure 4. Grand Junction, CO - 3-Year Rolling Average Concentrations
Grand Junction, CO
3-Year Rolling Averages:
Cadmium (PM10)
0.15
0.12
6
SiJ
0.09
g 0.06
a
o
U
0.03
0.00
i
i i
^0 ^00s lo0? 2o0s 2o0s 20j0
-------
Figure 4. Grand Junction, CO - 3-Year Rolling Average Concentrations
£
~£b
a
o
a
0>
o
c
o
U
0.15
0.12
0.09
0.06
0.03
0.00
*
Grand Junction, CO
3-Year Rolling Averages:
Chloroform
* + f
*
¥
^°0 ^//., ^/<>
^°Oy ^°0» ^°Oq ^°/n ^°i / ^0O ^0O ^0/<. ^0/^ ^0
"//
Years
%
"'s
U'6
2°/
'/> N,
Page 15 of 26
-------
Figure 4. Grand Junction, CO - 3-Year Rolling Average Concentrations
0.030
0.024
E
a
0.018
S3
——
§ o.
O
C
O
U
012
0.006
Grand Junction, CO
3-Year Rolling Averages:
Hexavalent Chromium
0.000
Of)
/<•
%
Jo,
'<5,
°0,
Jo,
Jo,
'09
Jo,
%
Jo.
''0
J°0(j
•Jo.
'*/
<<9,
'*2
V/o,
®/j
Years
5.0
4.0
co
c
¦— 3.0
c
0
S3
1 2.0
Q
c
o
U
1.0
0.0
n
Grand Junction, CO
3-Year Rolling Averages:
Lead (PMI0)
4
i
I M M
f
FT
X, -V, ^ ^A, -X,
°? "%> Og °J0 J°Jf J°/j J°/4 J°/s -°/? J°/$
Years
Page 16 of 26
-------
Figure 4. Grand Junction, CO - 3-Year Rolling Average Concentrations
CD
c
o
CJ
o
E
O
U
20.0
16.0
12.0
8.0
4.0
0.0
f
4 i
Grand Junction, CO
3-Year Rolling Averages:
Manganese (PM10)
I
i
i * *
~
*00 *°09 *0/
u
a
o
u
250.0
200.0
150.0
100.0
50.0
Grand Junction, CO
3-Year Rolling Averages:
Naphthalene
r ' ' *
i
o.o
^o,
%
¦?o,
*0.
'09
*o.
''0
^0,
'//
~3o.
-------
Figure 4. Grand Junction, CO - 3-Year Rolling Average Concentrations
1.0
Grand Junction, CO
3-Year Rolling Averages:
Nickel (PMI0)
0.8
0.6
0.4
0.2
£
~£jq
C
c
#Q
cS
o
u
c
o
U
*
T
o.o
^ ^ ^ , lOj 20, 10,
*%¦ "%;> %0 %7 %> ^ ^ ^
Years
60
=L
C
O
0.5
0.4
0.3
f
Grand Junction, CO
3-Year Rolling Averages:
Tetrachloroethylene
f
3 0.2
c
o
U
0.1
a
i i
0.0
\\\\\\NNV%NX\
Years
Page 18 of 26
-------
Figure 4. Grand Junction, CO - 3-Year Rolling Average Concentrations
E
0.10
0.08
0.06
c:
0
1 004
O
c
o
O
0.02
0.00
T+4
Grand Junction, CO
3-Year Rolling Averages:
Trichloroethylene
i * * i
^ ^ -V, ^
°06 ^°0? ^°0# ®Og "°/0 // °/£ °/j °J
-------
Table 6. NATTS Network Assessment: MQO#l - Completeness Percentage at Grand Junction, CO
Pollutant Group
Year
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyl
Acetaldehyde
98
102
98
107
100
102
100
98
100
95
95
92
97
97
90
Carbonyl
Formaldehyde
98
102
98
107
100
102
100
98
100
95
95
92
97
97
90
Chromium VI
Chromium VI
—
97
98
98
100
100
95
97
100
—
—
—
—
—
—
PAH
Benzo(a)pyrene
—
—
—
--
—
100
93
100
98
92
98
92
100
93
93
PAH
Naphthalene
—
—
—
--
—
100
93
100
98
92
98
92
100
93
93
PM10 Metals
Arsenic (PM10)
98
100
97
87
87
90
97
98
93
97
97
95
98
98
97
PM10 Metals
Beryllium (PM10)
98
100
97
87
87
90
97
98
93
97
97
95
98
98
97
PM10 Metals
Cadmium (PM10)
98
93
97
87
87
90
97
98
93
97
97
95
98
98
97
PM10 Metals
Lead (PM10)
98
93
97
87
87
90
97
98
93
97
97
95
98
98
97
PM10 Metals
Manganese (PM10)
98
93
97
87
87
90
97
98
93
97
97
95
98
98
97
PM10 Metals
Nickel (PM10)
98
93
97
87
87
90
97
98
93
97
97
95
98
98
97
voc
Benzene
95
97
100
103
100
97
97
98
102
100
93
83
102
98
90
voc
Butadiene, 1,3-
95
97
100
103
100
97
95
98
102
100
93
83
102
98
90
voc
Carbon tetrachloride
95
97
100
103
100
97
97
98
102
100
93
83
102
98
90
voc
Chloroform
95
97
100
103
100
97
97
98
102
100
93
83
102
98
90
voc
T etrachloroethylene
95
97
100
103
100
97
97
98
102
100
93
83
102
98
90
voc
T richloroethylene
95
97
100
103
100
97
95
98
102
100
93
83
102
98
90
voc
Vinyl chloride
95
97
100
103
100
97
95
98
102
100
93
83
102
98
90
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 Grand Junction, CO
Pollutant
Group
Pollutant Name
Target
MDL
Units
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyl
Acetaldehyde
0.45
pg/m3
0.05
0.04
0.02
0.01
0.02
0.02
0.02
0.02
0.02
0.03
0.02
0.02
0.02
0.06
0.08
Carbonyl
Formaldehyde
0.98/0.08a
Ug/m3
0.02
0.02
0.01
0.01
0.01
0.01
0.005
0.01
0.01
0.17
0.14
0.15
0.14
0.54
0.70
Chromium VI
Chromium VI
0.08
ng/m"
~
0.21
0.14
0.09
0.08
0.05
0.01
0.05
0.04
0.05
--
--
--
--
--
PAH
Benzo(a)pyrene
0.91
ng/m"
~
--
--
--
0.07
0.08
0.05
0.06
0.07
0.06
0.03
0.12
0.06
0.02
0.01
PAH
Naphthalene
29.00
ng/m"
~
--
--
--
0.01
0.01
0.02
0.005
0.006
0.008
0.013
0.005
0.02
0.06
0.05
PM10 Metals
Arsenic (PM10)
0.23
ng/m"
0.57
18.04
24.35
25.26
18.22
0.58
0.59
0.61
0.60
1.07
0.99
0.06
0.17
0.17
0.14
PM10 Metals
Beryllium (PM10)
0.42
ng/m"
0.36
1.07
1.26
0.71
0.71
0.36
0.62
0.62
0.61
0.58
0.05
0.003
0.002
0.002
0.003
PM10 Metals
Cadmium (PM10)
0.56
ng/m"
0.13
0.32
0.518
0.09
0.09
0.21
0.63
0.64
0.37
0.36
0.02
0.015
0.004
0.004
0.008
PM10 Metals
Lead (PM10)
15.0
ng/m"
0.01
0.02
0.02
0.01
0.01
0.01
0.02
0.02
0.01
0.01
0.003
0.002
0.002
0.002
0.004
PM10 Metals
Manganese (PM10)
5.0
ng/m"
0.04
0.08
0.07
0.02
0.02
0.07
0.079
0.08
0.05
0.05
0.03
0.02
0.03
0.02
0.03
PM10 Metals
Nickel (PM10)
2.1
ng/m"
0.08
0.44
0.55
0.05
0.05
0.11
0.153
0.15
0.16
0.20
0.09
0.12
0.10
0.11
0.51
voc
Benzene
0.13
l-tg/m"
1.23
0.49
0.12
0.59
0.25
0.15
0.47
0.71
1.50
0.47
0.37
0.96
0.52
0.64
0.36
voc
Butadiene, 1,3-
0.10
l-tg/m"
1.33
1.02
0.13
0.40
0.11
0.07
0.22
0.15
0.24
0.24
0.29
0.31
0.58
0.44
0.43
voc
Carbon tetrachloride
0.17
l-tg/m"
2.22
1.48
0.33
0.56
0.15
0.07
0.89
0.89
0.89
0.59
0.63
0.37
0.59
0.85
0.49
voc
Chloroform
0.50
l-tg/m"
0.39
0.27
0.04
0.17
0.07
0.02
0.17
0.09
0.14
0.15
0.14
0.16
0.12
0.19
0.13
voc
T etrachloroethylene
0.17
l-tg/m"
1.99
0.80
0.44
0.44
0.24
0.12
0.44
0.72
0.80
0.56
0.52
0.56
0.64
1.24
0.58
voc
T richloroethylene
0.5/0.2a
l-tg/m"
0.54
0.43
0.11
0.19
0.04
0.02
0.18
0.27
0.24
0.43
0.46
0.46
0.43
0.94
0.40
voc
Vinyl chloride
0.11
Pg/m^
0.93
0.93
0.19
0.56
0.12
0.05
0.30
0.19
0.26
0.26
0.28
0.19
0.74
0.40
0.30
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.
Page 21 of 26
-------
Table 8. NATTS Network Assessment: MQO#3 - Bias Percent Difference at Grand Junction, CO
Pollutant Group
Pollutant Name
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyls
Acetaldehyde
1.0
8.9
-0.8
-1.9
24.6
-10.1
0.7
3.0
a
0.1
-4.3
a
-5.4
3.6
-8.7
Carbonyls
Formaldehyde
-0.9
0.8
-13.2
-3.2
14.4
-7.8
-2.8
-3.4
a
-0.5
-2.2
a
-19.1
-5.3
-3.7
Chromium VI
Chromium VI
--
a
a
a
a
-5.6b
10.5b
a
19.5
-6.5
--
--
--
--
--
PAH
Benzo(a)pyrene
--
--
--
--
e
-1.7
-2.3
-2.1
25.2
-5.7
-16.3
-14.2
-10.5
-22.4
-14.8
PAH
Naphthalene
--
--
--
--
e
-7.7
-17.1
-13.9
21.4
25.5
0.7
-11.4
-9.5
-11.6
-20.7
PM10 Metals
Arsenic (PM10)
3.9
-34.1
3.8
3.3
11.1
2.7
6.7
c
17.6
-3.1
1.9
a
-2.3
-1.4
-3.4
PM10 Metals
Beryllium (PM10)
-3.1
-36.3
3.5
18.0
13.4
19.9
9.0
c
17.7
-12.9
d
a
-0.4
3.7
0.5
PM10 Metals
Cadmium (PM10)
1.1
-30.5
-3.4
8.4
17.1
6.6
-1.1
c
15.6
-10.5
d
a
3.9
2.8
3.0
PM10 Metals
Lead (PM10)
-0.8
-25.9
-7.4
-1.3
16.2
0.0
-7.5
c
31.9
-1.0
2.2
a
-1.6
-0.4
-1.9
PM10 Metals
Manganese (PM10)
9.1
-25.1
-5.9
-11.2
-16.5
-0.2
-5.1
c
141.8
-10.0
13.2
a
3.9
1.3
2.6
PM10 Metals
Nickel (PM10)
2.3
-15.2
-10.5
-5.1
16.8
-8.0
-0.8
c
7.1
1.2
e
a
26.5
21.2
10.6
voc
Benzene
-5.6
23.6
-12.9
-5.8
-1.5
6.2
-13.2
10.2
a
-3.3
18.1
-5.3
5.2
14.6
-11.8
voc
Butadiene, 1,3-
10.4
4.4
5.9
2.5
7.8
-0.5
-3.7
10.9
a
0.6
-8.1
-22.0
-10.1
3.9
-6.6
voc
Carbon tetrachloride
32.2
26.5
-5.0
10.4
16.5
1.9
31.6
25.4
a
13.3
24.2
40.2
53.5
26.5
0
voc
Chloroform
-6.4
15.5
3.9
9.1
4.3
5.4
1.0
-9.7
a
-2.4
8.5
10.3
8.1
9.2
-7.5
voc
T etrachloroethylene
-2.1
11.5
-14.3
-3.7
0
1.1
-16.1
0.8
a
-9.5
-1.8
-14.6
-5.5
13.0
-3.8
voc
T richloroethylene
10.7
13.5
16.6
5.5
5.3
2.7
-6.4
-8.3
a
3.0
-0.3
-10.0
-9.5
9.6
-14.6
voc
Vinyl chloride
-5.4
2.0
-11.0
1.1
-14.1
-0.1
-14.1
0.3
a
-8.1
10.0
-7.1
1.5
-3.3
-2.7
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: 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.
Page 22 of 26
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Table 9. NATTS Network Assessment: MQO#4 - Overall Method Precision %CV at Grand Junction, CO
Pollutant Group
Pollutant Name
Overall Met
lod precision % CV
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyls
Acetaldehyde
3.1
2.3
2.1
0.6
1.6
1.5
1.5
2.1
1.4
10.1
1.4
--
—
1.3
1.6
Carbonyls
Formaldehyde
1.8
3.4
1.7
2.0
3.2
2.2
2.1
2.2
1.0
11.9
1.6
--
—
3.3
2.0
Chromium VI
Chromium VI
—
21.5
14.6
20.9
6.6
13.2
10.9
10.9
15.4
5.4
—
--
—
--
—
PAH
Benzo(a)pyrene
—
--
—
--
—
--
—
--
—
--
—
--
—
--
—
PAH
Naphthalene
—
--
—
--
—
--
—
--
—
--
—
--
—
--
—
PM10 Metals
Arsenic (PM10)
20.2
a
a
a
a
a
17.3
43.2
27.1
16.0
8.5
4.6
3.8
4.2
4.6
PM10 Metals
Beryllium (PM10)
a
13.2
12.8
6.1
a
4.5
a
a
a
a
11.7
18.2
10.1
8.5
18.5
PM10 Metals
Cadmium (PM10)
1.4
20.5
8.6
1.8
7.1
4.6
a
a
a
14.4
6.0
19.4
9.9
4.0
23.5
PM10 Metals
Lead (PM10)
9.3
9.5
12.1
7.6
5.4
29.4
23.9
6.3
47.9
35.0
2.9
4.7
3.2
2.8
7.8
PM10 Metals
Manganese (PM10)
9.0
11.6
13.6
8.3
6.3
7.1
10.2
6.1
57.1
9.5
3.7
7.6
2.9
2.5
O©
*oo
PM10 Metals
Nickel (PM10)
5.8
11.8
7.6
2.4
17.2
37.0
30.5
45.0
66.1
a
12.4
14.3
6.8
27.8
a
voc
Benzene
9.5
8.4
5.7
4.1
16.1
10.5
10.9
5.8
6.0
3.8
4.9
--
--
3.5
3.3
voc
Butadiene, 1,3-
16.1
6.9
21.4
5.4
8.2
7.5
16.5
5.5
4.2
11.0
6.4
--
—
3.3
7.5
voc
Carbon tetrachloride
15.5
14.4
21.9
12.6
24.0
9.3
28.6
27.3
15.5
21.7
25.0
--
--
5.6
12.9
voc
Chloroform
—
8.3
38.5
3.0
12.7
11.5
4.1
7.1
7.4
3.7
7.8
--
—
2.8
4.6
voc
T etrachloroethylene
0
7.2
14.7
7.8
9.1
1.7
4.5
6.9
5.9
3.5
1.8
--
—
0
5.3
voc
T richloroethylene
—
a
—
a
27.1
5.5
a
1.2
—
--
a
--
—
a
a
voc
Vinyl chloride
--
--
--
--
--
--
--
a
--
--
a
--
a
2.9
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: 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 Grand Junction, CO
Pollutant Group
Pollutant Name
Analytical Method precision % CV
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
Carbonyls
Acetaldehyde
1.0
0.4
0.3
0.4
0.5
0.3
0.4
0.5
0.5
0.4
0.7
2.9
5.9
1.0
0.9
Carbonyls
Formaldehyde
0.7
0.5
0.3
0.6
0.7
0.3
0.4
1.1
0.6
0.6
0.5
2.2
4.0
1.0
0.9
Chromium VI
Chromium VI
—
--
6.1
5.1
5.4
7.4
4.1
7.7
10.3
6.9
—
--
—
"
—
PAH
Benzo(a)pyrene
—
~
—
--
—
--
—
--
a
3.4
1.1
0.9
1.3
1.3
2.3
PAH
Naphthalene
—
~
—
--
—
--
—
~
a
2.9
4.0
0.8
2.5
1.0
1.2
PM10 Metals
Arsenic (PM10)
--
~
--
~
--
~
--
~
a
a
14.1
9.5
12.0
3.8
3.8
PM10 Metals
Beryllium (PM10)
--
--
--
~
--
~
--
--
a
a
6.3
53.5
18.7
17.4
3.8
PM10 Metals
Cadmium (PM10)
--
~
--
~
~
~
~
~
a
a
15.4
20.0
14.8
2.4
2.6
PM10 Metals
Lead (PM10)
--
~
~
--
~
~
~
~
a
a
8.4
9.9
11.1
0.3
2.8
PM10 Metals
Manganese (PM10)
--
~
~
~
--
--
~
~
a
a
10.0
9.0
11.4
0.9
0.4
PM10 Metals
Nickel (PM10)
--
~
~
~
~
~
--
~
a
a
14.8
10.1
10.9
0.8
b
voc
Benzene
18.0
5.4
4.5
7.1
00
*00
3.0
6.1
3.6
3.8
7.5
3.7
6.7
6.5
2.6
3.0
voc
Butadiene, 1,3-
10.5
12.3
4.6
5.7
6.3
4.6
8.4
4.2
5.7
17.0
6.6
9.2
9.5
5.1
8.6
voc
Carbon tetrachloride
12.3
8.5
2.1
10.0
11.9
5.7
5.2
3.7
3.3
5.5
2.2
5.0
6.2
2.5
3.4
voc
Chloroform
--
8.3
33.3
5.3
11.2
11.5
6.5
6.4
4.9
4.8
5.9
9.5
13.8
5.5
6.0
voc
T etrachloroethylene
9.4
6.3
7.9
5.7
8.5
3.9
5.0
5.7
8.9
7.8
3.4
11.2
15.1
3.6
6.0
voc
T richloroethylene
—
b
—
b
4.3
3.4
b
3.6
b
b
b
b
b
b
b
voc
Vinyl chloride
--
--
--
--
--
--
--
b
b
b
b
b
b
3.7
b
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: Although both primary and secondary data were reported, both sets of values were less than the MDL. Thus no %CV was calculated..
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
2004-2010
ERG AT/C (Year Deployed: 1998)
2011-2011
ERG AT/C (Year Deployed: 2011)
2012-2016
ERG AT/C (Year Deployed: 2012)
2017
ATEC-63532
2018
ATEC-38584
Chormium VI
2005-2013
ERG Chromium VI sampler (Year Deployed: 2005)
PAHs
2008-2018
Tisch Environmental PS-1 PUF Sampler (Year Deployed: 2008)
PM10 Metals
2004-2004
Graseby Andersen GMW 1200 Hi-Vol Air Sampler (Year Deployed: 1987)
2005-2018
Thermo R&P Parisol-Plus 2025 Sequential Air Sampler (Year Deployed: 1997)
VOCs
2004-2010
ERG AT/C (Year Deployed: 2002)
2011-2011
ERG AT/C (Year Deployed: 2011)
2012-2016
ERG AT/C (Year Deployed: 2012)
2017
ATEC-63532
2018
ATEC-38584
Analytical Equipment
Carbonyls
2004-2017
Waters Alliance 2695 HPLC /model 2487 Dual Absorbance (Year Deployed: 2003)
2018
Waters Alliance e2695 HPLC /model 2489 Dual Absorbance (Year Deployed: 2018)
Chromium VI
2005-2013
Dionex 300 ion chromatography system (Year Deployed: 2001)
PAHs
2008-2014
HP/Agilent 5890/5971 GC/MS (Year Deployed: 2008)
2015-2018
HP/Agilent 7890B/5975C GC/MS (Year Deployed: 2015)
PM10 Metals
2004
HP/Agilent 4500 ICP-MS (Year Deployed: unknown)
2005-2007
Varian Ultramass model 700 ICP-MS (Year Deployed: 2000)
2008-2009
Varian Model 820 ICP-MS (Year Deployed: 2009)
2010-2013
HP/Agilent 7500ce ICP-MS (Year Deployed: 2005)
2014
PE ELAN 9000 ICP-MS (Year Deployed: 2003)
2015-2018
Thermo iCAP Q ICP-MS (Year Deployed: 2015)
VOCs
2004
HP/Agilent 6890 GC/FID (Year Deployed: unknown)
2005
HP/Agilent model 5890 GC/FID (Year Deployed: unknown)
2006
HP/Agilent 6890/5973 GC/MS (Year Deployed: 2001)
2007-2009
HP/Agilent 6890/5973 GC/MS (Year Deployed: 2006)
2010
HP/Agilent 5890/5971 GC/MS (Year Deployed: 2008)
2011-2018
HP/Agilent 6890/5975 GC/MS (Year Deployed: 2010)
Preconcentrator Equipment
VOCs
2004
unknown (Year Deployed: unknown)
2005-2006
Custom-built (Year Deployed: unknown)
2007
Entech 7000, Entech 7100A (Year Deployed: 2003/2007)
2008-2018
Entech 7100A (Year Deployed: 2003)
Standards Preparation Equipment
VOCs
2004
UNKNOWN (Year Deployed: UNKNOWN)
2007-2018
Custom-built (dynamic dilution) (Year Deployed: 1985)
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
VOCs
2004
UNKNOWN (Year Deployed: UNKNOWN)
2005-2006
Custom-built (Year Deployed: unknown)
2007-2010
Custom-built (Cold) (Year Deployed: 2003)
2011-2018
Wasson-ECE TO Clean (Hot) (Year Deployed: 2010)
PM10 Extraction Equipment
PM10 Metals
2004
unknown (sonicator) (Year Deployed: unknown)
2005-2009
CPI ModBlock (hotblock) (Year Deployed: 2000)
2010-2013
ElmaElmasonic-S180H (sonicator) (Year Deployed: 2010)
2014-2018
Environmental Express (Hotblock) (Year Deployed: 2014)
Chromium VI Extraction Equipment
Chromium VI
2005-2010
Branson 8510 (Sonicator) (Year Deployed: 2001)
2011
Branson 8510 Sonicator/ Branson Shaker (Year Deployed: 2011)
2012-2013
Branson Shaker (Year Deployed: 2011)
PAHs Extraction Equipment
PAHs 2008-2018 Dionex -300 (ASE) (Year Deployed: 2004)
Page 26 of 26
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