Clean Air Status and Trends Network
Third Quarter 2022 Quality Assurance Report
Summary of Quarterly Operations (July through September)
EPA Contract No. 68HERH21D0006
Introduction
This quarterly report summarizes results from the Clean Air Status and Trends Network (CASTNET)
quality assurance/quality control (QA/QC) program for data collected during third quarter 2022. The
various QA/QC criteria and policies are documented in the CASTNET Quality Assurance Project Plan
(QAPP; Wood, 2021; 2022). The QAPP is comprehensive and includes standards and policies for all
components of project operation from site selection through final data reporting. It is reviewed
annually and updated as warranted.
Quarterly Summary
The acquisition of Wood Environment & Infrastructure Solutions, Inc. (Wood) by WSP was completed
on September 21, 2022. The new company name is WSP USA Environment and Infrastructure
Solutions Inc. However, we will continue using Wood until November 1 or later, depending on
finalization of the name change across all licensing and state regulatory entities.
Preparation of the annual management review report and presentation in support of International
Organization for Standardization/International Electrotechnical Commission 17025:2017 accreditation
continued during third quarter 2022. This year's report includes details of the move to the new
location and procedures to verify operation of the analytical and equipment laboratories. The report
was distributed to reviewers, and the presentation took place on July 29, 2022. The presentation was
well received by the CASTNET management team, CASTNET QA Supervisor, and Wood's regional
corporate management and QA representatives.
The CASTNET QAPP Revision 9.5 was submitted to EPA for final approval on July 29, 2022. The QAPP
was signed and became effective on September 6, 2022.
Under the corrective action (CA_115) for the Level 2 transfer failure during some of the March 2022
calibration site visits, Wood scheduled visits to the March sites to verify that the ozone analyzer and
transfer were within criteria if one of the affected sites was near another site scheduled for a routine
calibration trip. Wood completed these site visits in second quarter 2022 for QAK172, OH; ALH157, IL;
and VIN140, IN. For other March sites that are not near another site, Wood sent a verified transfer
standard to be installed by the site operator as a replacement for the transfer audited in March.
Verified replacement transfer standards were sent to the STK138, IL; OXF122, OH; and PRK134, Wl
sites. The DCP114, PA site was also audited in March with the Level 2 transfer that failed. Since
DCP114 is currently "mothballed," no actions were taken to verify or replace the transfer. When the
site resumes operation, Wood will either make a site visit to verify the site ozone transfer or send a
verified replacement transfer to be installed by the site operator to address the problem.
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Wood continued to evaluate the cause of the positively biased converter efficiency results for NOy
found by EEMS during the performance evaluation audit of the PND165, WY site in May 2022. During
the routine calibration visit to the PND165, WY site on August 22-25, 2022, Wood's field technician
performed troubleshooting for the high conversion efficiency (found to be ~113 percent on average).
The ozone generator inside the NO/NOy analyzer was replaced. After replacement, the ozone
generator flow was verified, and converter efficiency was found to be reasonable at 98 percent. Wood
is investigating the effect on reported NOy data. Data for NO are not affected.
Wood's CASTNET QA Manager completed a method audit of one of the laboratory analysts. It was the
first method audit to take place in Wood's new location. The analyst demonstrated thorough
knowledge of the method and instrument operation. Method audits are performed to assess analysts'
proficiency and compliance with written procedures.
EPA noted an error in one of the data tables. The das_flow_dateoff field in the filter_pack table is
manually entered from the Site Status Report Form and is no longer verified by double entry since it is
not used to generate reported sample data. During third quarter, Wood incorporated screening of
manually entered fields to flag out-of-range values.
During September 2022, Wood received final results from analyses of samples for proficiency test (PT)
study 120 for Rain and Soft Waters. The results showed no indication of systemic bias and no warnings
or flags. The laboratory's performance was rated as "Good." PT study 120 is overseen by the Water
Science and Technology (WS&T) Directorate, a branch of Environmental Science and Technology
Laboratories with ECCC. The WS&T Directorate provides quality assurance and proficiency testing
services. Wood generally participates in two ECCC PT studies each year. However, because of
difficulties and delays caused by ongoing COVID 19 restrictions, the previous PT study (number 118)
was delayed, and ECCC canceled PT study 119. The study number 119 was retired by ECCC in order to
preserve the naming convention.
Wood proposed a change in key personnel from Anne Glubis to Kimberly Holland-Chominsky as the
CASTNET Quality Assurance Supervisor. EPA approved the change on September 23, 2022.
EPA requested Wood's CASTNET QA Manager provide additional audits of polyfluorinated alkyl
substances (PFAS) data quality for archived cloud water samples collected as part of the National
Atmospheric Deposition Program (NADP) PFAS Wet Deposition Pilot Study and for precipitation
sample PFAS data from September 2021 through January 2022. The QA Manager requested the data
from NADP, and he will perform the data audits during fourth quarter 2022. He will use the EPA Office
of Research and Development PFAS QAPP and NADP Central Analytical Laboratory standard operating
procedures in addition to PFAS laboratory data reports, chains-of-custody, etc. during the audit.
Table 1 lists the quarters of data that were validated to Level 3 during third quarter 2022 by site
calibration group. Table 2 lists the sites in each calibration group along with the calibration schedule.
Table 3 presents the measurement criteria for laboratory filter pack measurements. These criteria
apply to the QC samples listed in the following section of this report. Table 4 presents the critical
criteria for ozone monitoring. Table 5 presents the critical criteria for trace-level gas monitoring.
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Quality Control Analysis Count
The QC sample statistics presented in this report are for reference standards (RF) and continuing
calibration verification spikes (CCV) used to assess accuracy and for replicate sample analyses (RP) used
to assess "in-run" precision. In addition, laboratory method blanks (MB) containing reagents without a
filter; laboratory blanks (LB) containing reagents and a new, unexposed filter; and field blanks (FB)
containing reagents and an unexposed filter that was loaded into a filter pack assembly and shipped to
and from the monitoring site while remaining in sealed packaging are also included. Table 6 presents
the number of analyses in each category that were performed during third quarter 2022.
Sample Receipt Statistics
Ninety-five percent of field samples from EPA-sponsored sites must be received by the CASTNET
laboratory in Gainesville, FL no later than 14 days after removal from the sampling tower. Table 7
presents the relevant sample receipt statistics for third quarter 2022. For multiple weeks during third
quarter, all filter packs expected to be received were received on time. The upgrade to priority
shipping and the move to the new office, which is in an area served by the larger Gainesville postal
service, has greatly reduced the number of late filter packs.
Data Quality Indicator (DQI) Results
Figures 1 through 3 present the results of RF, CCV, and RP QC sample analyses for third quarter 2022.
All results were within the criteria listed in Table 3. The nylon sulfate RP value at 20.48 percent is within
the reporting limit criterion for sample values less than 5 times the reporting limit.
Table 8 presents summary statistics of critical criteria measurements at ozone sites collected during
third quarter 2022. The statistics presented contain data validated at Level 2 and Level 3. All data
associated with QC checks that fail to meet the criteria listed in Table 4 were or will be invalidated
unless the cause of failure has no effect on ambient data collection, and passing results still meet
frequency criteria. Results in shaded cells either exceed documented criteria or are otherwise notable.
Table 9 presents observations associated with the shaded cell results in Table 8.
Table 10 presents summary statistics of critical criteria measurements at trace-level gas monitoring
sites collected during third quarter 2022. The statistics presented contain data validated at Level 2 and
Level 3. All data associated with QC checks that fail to meet the criteria listed in Table 5 were or will be
invalidated unless the cause of failure has no effect on ambient data collection, and passing results
still meet frequency criteria. Results in shaded cells either exceed documented criteria or are otherwise
notable. Table 11 presents observations associated with the shaded cell results in Table 10
Laboratory Control Sample Analysis
The laboratory control sample (LCS) is a reagent blank spiked with the target analytes from the
established analytical methods and carried through the same extraction process that field samples
must undergo. LCS analyses are performed by the laboratory to monitor for potential sample handling
artifacts and provide a means to identify possible analyte loss from extraction to extraction. Figure 4
presents LCS analysis results for third quarter 2022. All recovery values were between 87.8 percent and
105.4 percent. The lower values for Teflon ammonium are from a new LCS lot and still within the
established criterion.
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Blank Results
Figures 5 through 7 present the results of MB, LB, and FB QC sample analyses for third quarter 2022.
All third quarter results were within criteria (two times the reporting limit) listed in Table 3 with the
exception of one HNO3 LB at 2.4 times the reporting limit. The other LB in the batch as well as all other
QC samples were within criteria. In addition, the associated field samples were reasonable compared
with the sites' historical data.
Suspect/Invalid Filter Pack Samples
Filter pack samples that were flagged as suspect or invalid during third quarter 2022 are listed in
Table 12. This table also includes associated site identification and a brief description of the reason the
sample was flagged. During third quarter, five filter pack samples were invalidated.
Field Problem Count
Table 13 presents counts of field problems affecting continuous data collection for more than one day
for third quarter 2022. The problem counts are sorted by a 30-, 60-, or 90-day time period to
resolution. A category for unresolved problems is also included. Time to resolution indicates the
period taken to implement corrective action.
References
American Society for Testing and Materials (ASTM). 2008. ASTM E29-08, "Standard Practice for Using
Significant Digits in Test Data to Determine Conformance with Specifications." ASTM
International, West Conshohocken, PA, D0l:10.1520/E0029-08. www.astm.org.
U.S. Environmental Protection Agency (EPA). 2020. Title 40 Code of Federal Regulations Part 58,
"Appendix A to Part 58 - Quality Assurance Requirements for Monitors used in Evaluations of
National Ambient Air Quality Standards."
Wood Environment & Infrastructure Solutions, Inc. (Wood) 2022. Clean Air Status and Trends Network
(CASTNET) Quality Assurance Project Plan (QAPP) Revision 9.5. Prepared for U.S. Environmental
Protection Agency (EPA), Office of Air and Radiation, Clean Air Markets Division, Washington,
DC. Contract No. 68HERH21D0006. Gainesville, FL.
https://java.epa.gov/castnet/documents.do.
Wood Environment & Infrastructure Solutions, Inc. (Wood) 2021. Clean Air Status and Trends Network
(CASTNET) Quality Assurance Project Plan (QAPP) Revision 9.4. Prepared for U.S. Environmental
Protection Agency (EPA), Office of Air and Radiation, Clean Air Markets Division, Washington,
DC. Contract No. EP-W-16-015. Gainesville, FL. https://java.epa.gov/castnet/documents.do.
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Table 1 Data Validated to Level 3 during Third Quarter 2022
Calibration
Months
Number of
Complete
Number of
Group*
Available
Months
Quarters
Quarters
E-3/W-10f
November 2021 -
6
Quarter 1 2022
1
April 2022
SE-4/MW-6*
January 2022 -
6
Quarter 1 2022 -
2
June 2022
Quarter 2 2022
Notes: * The sites contained in each calibration group are listed in Table 2.
t Contains ROM206 of the ROM406/ROM206 co-located pair
* Contains MCK131/231 co-located pair
Table 2 Field Calibration Schedule for 2022
Calibration
Group
Months
Calibrated
Sites
Calibrated
Eastern Sites (22 Total)
E-1
(8 Sites)
February/August
BEL116, MD WSP144, NJ ARE128, PA PED108,VA
BWR139, MD CTH110, NY PSU106, PA VPI120,VA
E-2
(9 Sites)
April/October
ABT147, CT WST109, NH HWF187, NY1 WFM105, NY UND002, VT
ASH135, ME CAT 175, NY NIC001, NY EGB181,ON
E-3
(5 Sites)
May/November
KEF112, PA LRU 17, PA CDR119,WV
MKG113, PA PARI 07, WV
Southeastern Sites (11 Total)
SE-4
(7 Sites)
January/July
SND152, AL BFT142, NC COW137, NC SPD111,TN
GAS153, GA CND125, NC DUK008, NC1
SE-5
(4 Sites)
February/August
CAD150, AR SUM156, FL
IRL141, FL CVL151, MS
Midwestern Sites (19 Total)
MW-6
(6 Sites)
January/July
CDZ171, KY MCK131, KY PNF126, NC1
CKT136, KY MCK231, KY ESP127,TN
MW-7
(9 Sites)
March/September
ALH157, IL STK138, IL RED004, MN OXF122, OH PRK134, Wl
BVL130, IL2 VIN140, IN DCP114, OH QAK172, OH
MW-8
(4 Sites)
April/October
SAL133, IN ANA115, Ml
HOX148, Ml UVL124, Ml
Western Sites (12 Total)
W-9
(5 Sites)
March/September
KNZ184, KS CHE185, OK ALC188, TX
KIC003, KS SAN 189, NE
W-10
(7 Sites)
May/November
GTH161, CO NPT006, ID UMA009, WA PND165, WY3
ROM206, CO3 PAL190, TX CNT169,WY
Notes: 1 Trace-level gas calibrations are performed quarterly in January, April, July, and October.
2Trace-level gas calibrations are performed quarterly in March, June, September, and December.
3 Trace-level gas calibrations are performed quarterly in February, May, August, and November.
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Table 3 Data Quality Indicators for CASTNET Laboratory Measurements
Analyte
Method
Precision1
(MARPD)
Accuracy2
(%)
Nominal
Reporting Limits
mg/L
fig/Filter
Ammonium (NH4+)
AC
20
90-110
0.020*
0.5
Sodium (Na+)
ICP-OES
20
95-105
0.005
0.125
Potassium (K+)
ICP-OES
20
95-105
0.006
0.15
Magnesium (Mg2+)
ICP-OES
20
95-105
0.003
0.075
Calcium (Ca2+)
ICP-OES
20
95-105
0.006
0.15
Chloride (CI")
IC
20
95-105
0.020
0.5
Nitrate (N03)
IC
20
95-105
0.008*
0.2
Sulfate (S024)
IC
20
95-105
0.040
1.0
Notes: 1 This column lists precision goals for both network precision calculated from co-located filter samples and laboratory precision
based on replicate samples for samples > five times the reporting limit. The criterion is ± the reporting limit if the sample is < five
times the reporting limit.
2 This column lists laboratory accuracy goals based on reference standards and continuing calibration verification spikes. The criterion
is 90-110 percent for ICP-OES reference standards.
3 The reporting limit for sulfate on cellulose filters is 0.080 mg/L (2.0 pg/filter).
AC
= automated colorimetry
IC
= ion chromatography
ICP-OES
= inductively coupled plasma-optical emission spectrometry
MARPD
= mean absolute relative percent difference
mg/L
= milligrams per liter
pg/Filter
= micrograms per filter
*
= as nitrogen
Values are rounded according to American Society for Testing and Materials (ASTM) E29-08, "Standard Practice for Using Significant
Digits in Test Data to Determine Conformance with Specifications" (ASTM, 2008).
For more information on analytical methods and associated precision and accuracy criteria, see the CASTNET QAPP, (Wood, 2021; 2022).
Table 4 Ozone Critical Criteria*
Type of Check
Analyzer Response
Zero
Less than + 3.1 parts per billion (ppb)
Span
Less than + 7.1 percent between supplied and observed concentrations
Single Point QC
Less than + 7.1 percent between supplied and observed concentrations
Notes: * Applies to CASTNET sites that are configured and operated in accordance with Part 58 of Title 40 of the Code of Federal
Regulations (EPA, 2020). The minimum frequency for these checks is once every two weeks.
Values are rounded according to ASTM E29-08, "Standard Practice for Using Significant Digits in Test Data to Determine Conformance
with Specifications" (ASTM, 2008).
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Table 5 Trace-level Gas Monitoring Critical Criteria*
Parameter
Analyzer Response
Zero Check
Span Check/ Single Point QC Check
SO,
Less than + 1.51 ppb
Less than + 10.1 percent between supplied and observed
concentrations
NOy
Less than + 1.51 ppb
CO
Less than + 30.1 ppb
Notes: *Applies to CASTNET sites that are configured and operated in accordance with Part 58 of Title 40 of the Code of Federal Regulations
(EPA, 2020). The minimum frequency for these checks is once every two weeks.
Values are rounded according to ASTM E29-08, "Standard Practice for Using Significant Digits in Test Data to Determine
Conformance with Specifications" (ASTM, 2008).
SOz = sulfur dioxide
NOy = total reactive oxides of nitrogen
CO = carbon monoxide
ppb = parts per billion
Table 6 QC Analysis Count for Third Quarter 2022
Filter
Type
Parameter
RF
Sample
Count
CCV
Sample
Count
RP
Sample
Count
MB
Sample
Count
LB
Sample
Count
FB
Sample
Count
Teflon
S024
64
177
77
16
22
71
no3
64
177
77
16
22
71
NH+4
32
161
77
16
22
71
cr
64
177
77
16
22
71
~ 2+
Ca
38
171
83
18
24
78
• . 2 +
Mg
38
171
83
18
24
78
Na+
38
171
83
18
24
78
K+
38
171
83
18
24
78
Nylon
so24
29
140
68
10
22
39
no3
29
140
68
10
22
39
Cellulose
S024
46
159
69
14
22
77
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Table 7 Filter Pack Receipt Summary for Third Quarter 2022
Count of samples received more than 14 days
after removal from tower:
14
Count of all samples received:
555
Fraction of samples received within 14 days:
0.975
Average interval in days:
4.407
First receipt date:
07/01/2022
Last receipt date:
09/15/2022
Note: Sample shipments for the Egbert, Ontario site (EGB181) are in groups of four.
Samples associated with EGB181 are excluded from this statistic.
Table 8 Ozone QC Summary for Third Quarter 2022 (1 of 2)
% Single Single Zero
% Span Point QC Point QC % Zero Average
Site ID Pass1 Span |%D|2 Pass1 |%D|2 Pass1 (ppb)2
ABT147, CT
100.00
1.17
100.00
1.08
100.00
0.35
ALC188, TX
87.76
4.28
95.88
2.97
100.00
0.42
ALH157, IL
100.00
1.89
100.00
2.24
100.00
0.21
ANA115, Ml
93.41
8.38
93.41
9.98
100.00
0.47
ARE128, PA
100.00
0.83
100.00
1.29
100.00
0.29
ASH135, ME3
N/A
N/A
N/A
N/A
N/A
N/A
BEL116, MD
100.00
1.77
100.00
1.42
100.00
0.60
BFT142, NC
100.00
1.89
100.00
2.03
100.00
0.29
BVL130, IL
100.00
2.22
93.88
2.94
92.86
1.82
BWR139, MD
100.00
0.92
96.70
1.85
97.80
0.60
CAD150, AR
100.00
2.01
100.00
2.76
100.00
0.28
CDR119, WV3
N/A
N/A
N/A
N/A
N/A
N/A
CDZ171, KY3
N/A
N/A
N/A
N/A
N/A
N/A
CKT136, KY
100.00
0.89
100.00
1.00
100.00
0.13
CND125, NC
98.92
2.74
100.00
2.90
100.00
0.97
CNT169, WY
100.00
1.23
100.00
1.67
100.00
0.45
COW137, NC
100.00
0.53
100.00
0.85
100.00
0.40
CTH110, NY
100.00
0.68
100.00
0.89
100.00
0.17
CVL151, MS
100.00
2.21
100.00
2.53
100.00
0.21
DCP114, OH3
N/A
N/A
N/A
N/A
N/A
N/A
DUK008, NC
100.00
1.52
100.00
1.17
100.00
0.53
ESP127, TN
100.00
2.35
98.94
1.87
100.00
0.46
GAS 153, GA
87.00
6.69
86.00
25.11
92.00
12.52
GTH161, CO
100.00
2.89
100.00
2.89
100.00
0.23
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Table 8 Ozone QC Summary for Third Quarter 2022 (2 of 2)
% Single Single Zero
% Span Point QC Point QC % Zero Average
Site ID Pass1 Span |%D|2 Pass1 |%D|2 Pass1 (ppb)2
HOX148, Ml
100.00
1.63
100.00
2.96
100.00
0.75
HWF187, NY3
N/A
N/A
N/A
N/A
N/A
N/A
IRL141, FL
97.85
2.13
100.00
1.79
100.00
0.95
KEF112, PA
100.00
1.65
100.00
0.98
100.00
0.43
LRU 17, PA
100.00
2.61
100.00
2.30
100.00
0.22
MCK131, KY
98.97
1.67
97.94
1.99
98.97
0.24
MCK231, KY
98.95
0.87
100.00
0.79
98.95
0.20
MKG113, PA
100.00
1.01
98.86
1.05
98.86
0.40
NPT006, ID
91.75
8.93
91.75
8.50
97.94
0.58
OXF122, OH
100.00
2.52
100.00
2.85
100.00
0.67
PAL190, TX
100.00
1.70
100.00
1.91
100.00
0.46
PARI 07, WV
100.00
1.63
100.00
1.75
100.00
0.16
PED108, VA
100.00
1.00
100.00
1.03
100.00
0.26
PND165, WY
100.00
1.66
100.00
1.26
100.00
0.29
PNF126, NC3
N/A
N/A
N/A
N/A
N/A
N/A
PRK134, Wl
100.00
2.84
97.89
3.06
100.00
0.51
PS U106, PA
100.00
1.45
98.94
2.08
100.00
0.26
QAK172, OH
100.00
0.99
100.00
1.44
100.00
0.31
ROM206, CO
100.00
1.05
100.00
0.76
100.00
0.44
SAL133, IN
100.00
0.85
100.00
0.80
100.00
0.27
SAN 189, NE
98.89
3.85
100.00
3.53
100.00
0.38
SND152, AL
100.00
2.49
100.00
2.74
100.00
0.45
SPD111, TN
100.00
2.16
97.00
2.62
93.00
0.85
STK138, IL
100.00
2.57
100.00
2.60
100.00
0.64
SUM156, FL
100.00
0.74
100.00
0.75
100.00
0.15
UMA009, WA
100.00
1.43
100.00
1.13
100.00
0.42
UVL124, Ml
97.92
2.38
97.92
2.66
97.92
0.98
VIN140, IN
97.75
3.22
97.75
3.49
97.75
0.26
VPI120, VA
100.00
1.06
94.57
1.87
96.74
0.35
WSP144, NJ
93.75
2.33
95.83
2.46
97.92
0.38
WST109, NH3
N/A
N/A
N/A
N/A
N/A
N/A
Notes: 'Percentage of comparisons that pass the criteria listed in Table 4. Values falling below 90 percent are addressed in Table 9.
^Absolute value of the average percent differences between the on-site transfer standard and the site monitor. Values exceeding the
criteria listed in Table 4 are addressed in Table 9.
3Site ceased sampling activities beginning May 10, 2022, due to fiscal year 2022 budget constraints.
%D = percent difference
ppb = parts per billion
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Table 9 Ozone QC Observations for Third Quarter 2022
Site ID
QC Criterion
Comments
ALC188, TX
% Span Pass
The analyzer required calibration. Calibration was
completed 9/29/2022.
ANA115, Ml
Span |%D|
The analyzer sample pump failed and was replaced
Single Point QC |%D|
7/21/2022.
GAS 153, GA
% Span Pass
The analyzer malfunctioned and was replaced
% Single Point QC Pass
7/13/2022.
Single Point QC |%D|
Zero Average
NPT006, ID
Span |%D|
Single Point QC |%D|
The analyzer malfunctioned intermittently.
Note: %D = percent difference
Table 10 Trace-level Gas QC Summary for Third Quarter 2022
% Single
Zero
% Span
Point QC
Single Point
% Zero
Average
Parameter
Pass1
Span |%D|2
Pass1
QC |%D|2
Pass1
(ppb)2
BVL130, IL
S02
100.00
0.69
100.00
3.64
100.00
0.69
NOy
100.00
1.49
100.00
0.73
100.00
0.18
CO
100.00
1.55
77.27
9.46
72.09
31.10
DUK008, NC
NOy
100.00
1.73
100.00
2.04
100.00
0.26
HWF187, NY3
NOy
N/A
N/A
N/A
N/A
N/A
N/A
PND165, WY
NOy
100.00
1.99
100.00
2.89
100.00
0.35
PNF126, NC3
NOy
N/A
N/A
N/A
N/A
N/A
N/A
ROM206, CO
NOy
100.00
2.26
100.00
2.75
98.00
0.67
Notes: 'Percentage of comparisons that pass the criteria listed in Table 5. Values falling below 90 percent are addressed in Table 11.
^Absolute value of the average percent differences between the supplied and observed concentrations. Values exceeding the criteria
listed in Table 5 are addressed in Table 11.
3HWF187 and PNF126 ceased sampling activities beginning May 10, 2022, due to fiscal year 2022 budget constraints.
%D = percent difference
ppb = parts per billion
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CASTNET Quality Assurance Report - Third Quarter 2022
Table 11 Trace-level Gas QC Observations for Third Quarter 2022
Site ID
Parameter
QC Criterion
Comments
BVL130, IL
CO
% Single Point QC Pass
% Zero Pass
QC check failures in July were caused by a loose
Ethernet cable.
Table 12 Filter Packs Flagged as Suspect or Invalid during Third Quarter 2022
Site ID
Sample No.
Reason
BEL116, MD
2228001-06
Power failure
LAV410, CA
2228003-13
Power failure
PED108, VA
2229001-39
Power failure followed by a mass flow controller malfunction
QAK172, OH
2229001-44
Valid hourly flow < 75%
STK138, IL
2227001-49
Valid hourly flow < 75%
Table 13 Field Problems Affecting Data Collection
Days to Resolution Problem Count
30
314
60
9
90
1
Unresolved by End of Quarter
10
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CASTNET Quality Assurance Report - Third Quarter 2022
Figure 1 Reference Standard Results for Third Quarter 2022 (percent recovery)
RF - Teflon ICP-OES
Ca ¦ Mg« Nai K
c8
o
A
A
0
O
cP
*Ol A
ccP 8
oo
o
o
A A
o°
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88
1
Analysis Date
RF - Nylon IC
~ NS04 0 NHN03
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nt
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aa
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RF-Teflon IC&AC
i TS04# TN03# TNH4A CI
A
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8/3/2022
ss
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8/27/2022
9/8/2022
I
110
RF - Cellulose IC
A. WS02
105
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4
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i- '
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1 100
8
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95
90
1
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§ 8
!
§
K
Analysis Date
§
s
1
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CASTNET Quality Assurance Report - Third Quarter 2022
Figure 2 Continuing Calibration Spike Results for Third Quarter 2022 (percent recovery)
§ 100
8
&
CCV-Teflon ICP-OES
Ca ¦ Mg» NaA K
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o
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b
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1 £
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a
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712212022
8/3/2022
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CCV - Nylon IC
A. NS04O NHN03
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4
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ah
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10/2/2022
CCV-Teflon IC & AC
L TS04# TN03+ TNH4 A CI
fo
Analysis Dale
CCV - Cellulose IC
A. WS02
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1
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Figure 3 Replicate Sample Analysis Results for Third Quarter 2022 (percent difference)
RP - Teflon ICP-OES
Ca ¦ Mg# NaA K
o
A
o
° fa
o a[
e 6
RP - Nylon IC
A MS04* NHN03
A
A
r*
A
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__A I
PH ~
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6
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Hr
5
7/9/2022
1
1 1
1 s
i
10/1/2022
RP-Teflon IC&AC
i TS04 # TN03# TNH4A CI
A
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6/27/2022
3
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10/1/2022
RP - Cellulose IC
A. WS02
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I 1 Ai
*
6/27/2022
7/21/2022
jS
.
i
10/1/2022
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EPA Contract No. 68HERH21D0006
CASTNET Quality Assurance Report - Third Quarter 2022
Figure 4 Laboratory Control Sample Results for Third Quarter 2022 (percent recovery)
§ 100
8
&
o
e
o
*6
LCS - Teflon ICP-OES
Ca ¦ Mg» NaA K
s &
6 8 6
6o
°o
6 9
o
LCS-Teflon ICS AC
~ TS04 # TN03# TNH4A Ci
6 ^
o
A A
* A
o
to
Analysis Date
LCS - Nylon IC
A. MS04* NHN03
A
A
A
a
A
A
A
6/27/2022
I
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s
a
§
i
!
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9/19/2022
10/1/2022
LCS - Cellulose IC
A. WS02
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1
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| i
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1 i
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i
I
10/1/2022
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CASTNET Quality Assurance Report - Third Quarter 2022
Figure 5 Method Blank Analysis Results for Third Quarter 2022 (total micrograms)
MB - Teflon ICP-OES
Ca ¦ Mg# Na A K
MB-Teflon IC&AC
A TS04# TN03# TNH4A CI
&
¦A
m ©
A A A
A
©
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0.14
i
1 (
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0.08
1 0.6
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es as
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Analysis Date
9/19/2022
i
-
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5 1
i i
: § ;
i o
Analysis Dale
| i
i
se
|
MB
A.
Nylon IC
NS04» NHN03
0.8
§
| 0.6
§
|
o
0.4
j | »
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—o-
1 0
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S
£
j
i
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: i
ft
2
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Analysis Date
!S
I
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CASTNET Quality Assurance Report - Third Quarter 2022
Figure 6 Laboratory Blank Analysis Results for Third Quarter 2022 (total micrograms)
LB - Teflon ICP-OES
Ca ¦ Mg» NaA K
a m ® ®
O CO o
¦i ¦¦ 1 I ¦
LB - Nylon IC
A NSCMO NHN03
0.8
§
ji 0.6
§
|
o
0.4
1 1 1? + i 1 [—1—
0.2
—i—I—1®H—
Oh
—!• 1
' •;—j—
o—
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!
Analysis Date
i
§ §
1 1
LB - Teflon IC & AC
A TS04 # TN03# TNH4A Ci
1.2
Oa Oa Oa Oa Oa Oa Qa
o o—¦—©-
Oa Oa
LB - Cellulose IC
A WS02
2
i~r~
1.5
o
I ,
0.5
0
S
|
i i
I |
Analysis Date
\
\
|
i
Wood Environment & Infrastructure Solutions, Inc. - Project No. 6064226103
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CASTNET Quality Assurance Report - Third Quarter 2022
Figure 7 Field Blank Analysis Results for Third Quarter 2022 (total micrograms)
FB - Teflon ICP-OES
Ca ¦ Mg» NaA K
FB - Nylon IC
A. MS04* NHN03
FB - Teflon IC & AC
A TS04 # TN03# TNH4A Ci
FB - Cellulose IC
A. WS02
A A '
AAA
AAA
5?
=>
j
I
8/5/2022
8/17/2022
R
|
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