Summary of Quarterly Operations (October through December)
with 2015 Annual Summary
EPA Contract No. EP-W-15-Q03
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 fourth
quarter 2015. It also provides an annual summary that includes data from the three previous
quarters. The various QA/QC criteria and policies are documented in the CASTNET Quality
Assurance Project Plan (QAPP; Amec Foster Wheeler, 2014). 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.
Significant Events for 2015
During 2015, AMEC Environment and Infrastructure, Inc. (AMEC) received Modification 0006
to Contract EP-W-15-003 in which EPA accepted AMEC's name change to Amec Foster
Wheeler Environment & Infrastructure, Inc. (Amec Foster Wheeler).
There were two changes in Key Personnel for CASTNET during 2015. Amec Foster Wheeler
received Contract Modification 0066 to the CASTNET IV contract (EP-W-09-028) on January 14,
2015, which approved Ann Bernhardt as Amec Foster Wheeler's CASTNET QA Supervisor.
Additionally, Amec Foster Wheeler received Contract Modification 0009 to the CASTNET Bridge
contract (EP-W-15-003) on October 27, 2015, which approved Katherine Barry as the CASTNET
Laboratory Operations Manager.
During 2015, Amec Foster Wheeler submitted sample analyses for proficiency test (PT)
studies 0105 and 0106 for Rain and Soft Waters to the National Laboratory of Environmental
Testing (NLET), a branch of the National Water Research Institute (NWRI) with Environment
Canada that provides QA services. Amec Foster Wheeler received the results from PT study 0105
in March. A low bias was indicated for the pH analyses. One sample was flagged "action high" for
potassium and chloride. Amec Foster Wheeler was rated good for the study overall. Corrective
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action was implemented for the low bias and "action high" flags. The documented completed
corrective action was submitted to the American Association for Laboratory Accreditation (A2LA)
along with the study results as required for accredited laboratories. The corrective action was
accepted by A2LA. Amec Foster Wheeler received results from PT study 0106 in August. Amec
Foster Wheeler was rated "very good" for analyses for PT study 0106. Amec Foster Wheeler's
5-year average remained "very good," the highest rating available.
During January 2015, comments received from EPA on the CASTNET QAPP Revision 8.2 were
incorporated into the QAPP, and Revision 8.2 was finalized. After EPA approved the final
version of the QAPP Revision 8.2, it was distributed to the designated recipients.
Amec Foster Wheeler corporate continued to support the analytical laboratory's activities with
regard to maintaining 17025:2005 accreditation under the International Organization for
Standardization (ISO)/International Electrotechnical Commission (IEC). An assessment of the
laboratory was performed by an assigned assessor from A2LA in early April 2015. There was a
single deficiency related to the existing scope of accreditation requiring an explicit definition of
the authority of the QA Manager to ensure the management system is implemented and
followed. This deficiency was addressed by revising the laboratory quality manual. Objective
evidence of the corrective action was provided to A2LA in early May 2015. Amec Foster
Wheeler's accreditation was renewed and is good for two years until May 31, 2017.
Additionally, Amec Foster Wheeler extended ISO/IEC 17025:2005 accreditation to select field-
based activities. This accreditation is good until May 31, 2017.
An annual management review in support of maintaining ISO/IEC 17025:2005 accreditation by
A2LA is required. The report was provided to the Amec Foster Wheeler management group in
December 2015.
EPA's Office of Air Quality Planning and Standards (OAQPS) requested that only ozone 1-point
QC checks that are associated with valid data be submitted to EPA's Air Quality System (AQS).
Those 1-point QC checks that are associated with data that have been invalidated are being
excluded starting with the January 2015 ozone data.
During second quarter, Amec Foster Wheeler determined that ozone concentration data from the
Rocky Mountain National Park, CO site (ROM206) showed concentrations have been 2 to 3
parts per billion (ppb) higher than those measured by the collocated ROM406 site since
installation of the reactive oxides of nitrogen (NOy) analyzer at ROM206. During third quarter,
Amec Foster Wheeler took corrective action by placing all of the ozone analyzers at the trace-
level gas monitoring sites on the standard zero air generation system used at CASTNET sites that
do not measure trace-level gases.
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The CASTNET QA Manager worked with EPA to revise the CASTNET QAPP siting criteria to
include siting criteria from Title 40 Code of Federal Regulations (CFR) Part 58 that specifically
addresses ozone monitoring for AQS-submitting sites. Modifications to siting criteria included
specific sets of criteria for the different types of sites: small-footprint, filter pack-only sites;
AQS-submitting (i.e., 40 CFR Part 58-compliant) ozone sites; and classic sites.
Road construction near the Pinedale WY (PND165) site began during third quarter. Continuation
of the road improvement project is planned for the warm season over the next two years. Road
construction activities are expected to affect monitoring activities at the site. Amec Foster
Wheeler worked with EPA, the National Park Service, and the Bureau of Land Management to
develop a flagging protocol for data collected during active periods of road construction. The
reactive oxides of nitrogen (NOy) concentration data collected during the road construction
period will be flagged as follows:
A = Anomalous value resulting from local anthropogenic activity
Additionally, ozone and filter pack concentration data will be flagged:
& = Ambient concentration data measured/collected coincident with data flagged^
The NOy data from the site will be reviewed using routine protocols with an emphasis on
examination of 1-minute data and comparison with historical concentrations. For example,
Figure 1 depicts 1-minute data used to flag hourly measurements as anomalous for hours 0400,
0800, and 1900 on September 14, 2015. Figure 2 depicts 1-minute data used to flag hourly
measurements as anomalous for hours 1200 through 1700 on September 15, 2015. In both cases,
the data not flagged are well within the site's historical concentration range and exhibit the
gradual changes in concentration expected for ambient data. As per the flagging protocol,
anomalous high readings will be flagged per the hour affected. In addition, ozone and filter pack
data collected simultaneously will be flagged as coincident with the anomalous NOy data. When
the ozone and filter pack data are reviewed through routine processes, the & flag will be
exchanged with A for hours deemed anomalous in their own right.
The required 3-year ozone facility technical systems audit (TSA) of Amec Foster Wheeler's
CASTNET ozone laboratory and a field site took place during November 2015. Jeff Nichol (RTI
International, Inc.) audited the selected field site at Prince Edward, VA (PED108) on Tuesday,
November 10, during the site operator's normal weekly site visit. Mr. Nichol performed the TSA
of the CASTNET ozone laboratory facility on November 16 and 17, 2015. Mr. Nichol completed
the majority of the facility audit on Monday, November 16, and observed the handling of the site
operator calls by Amec Foster Wheeler field personnel on Tuesday, November 17. Mr. Nichol had
positive and complimentary comments during the TSA. There were no technical findings
mentioned at the debriefing, only recommendations regarding documentation. The final TSA
report was provided to Amec Foster Wheeler by Mr. Nichol in December. Amec Foster Wheeler
forwarded the final TSA report to EPA.
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Work was completed on the annual update of the CASTNET QAPP Revision 8.3 and EPA's
comments were incorporated into the draft final version during December 2015. The updates to the
QAPP included changes recommended by the TSA auditor. The signature page of the QAPP was
updated for Revision 8.3 to include current representatives from CASTNET primary sponsors.
Quarterly/Annual Summary
Table 1 lists the quarters of data that were validated to Level 3 during 2015 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 continuous field measurements. These criteria
apply to the instrument challenges performed during site calibrations. Table 4 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 5 presents the critical criteria for
ozone monitoring. Table 6 presents the critical criteria for trace-level gas monitoring.
Quality Control Analysis Count
The QC sample statistics presented in this report are for reference standards (RF) and continuing
calibration verification spikes (CC V) 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. Tables 7 through 10 present the number of analyses in each category that were
performed during each quarter of 2015.
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 11 presents the relevant sample receipt statistics for each of the four quarters of
2015 together with an annual summary for each category.
Data Quality Indicator (DQI) Results1
Figures 3 through 5 present the results of RF, CCV, and RP QC sample analyses for fourth
quarter 2015. All results were within the criteria listed in Table 4 with the exception of a single
calcium RP result. The associated sample concentration is less than 3 times the reporting limit
for calcium. Table 12 presents the percent recoveries and standard deviations for RF, CCV, and
RP QC sample analyses for 2015. Quarterly averages are all within criteria.
1 Reported statistics are calculated based on values rounded according to ASTM E29-08, Standard Practice for
Using Significant Digits in Test Data to Determine Conformance with Specifications E29 (ASTM, 2008).
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Table 13 presents quarterly collocated filter pack precision results for data validated to Level 3
during the year. Results for MCK131/231, KY and ROM406/206, CO were within the criterion
for all of the 11 parameters reported.
Figure 6 presents completeness statistics for continuous measurements validated to Level 3
during the year. All parameters met the 90 percent criterion.
Table 14 presents summary statistics of critical criteria measurements at ozone sites collected
during fourth quarter 2015. 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 affect on ambient data collection, and passing
results still meet frequency criteria. Results in shaded cells either exceed documented criteria or
are otherwise notable. Table 15 presents observations associated with the shaded cell results in
Table 14.
Table 16 presents summary statistics of critical criteria measurements at trace-level gas
monitoring sites collected during fourth quarter 2015. 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 6 were or will be invalidated unless the cause of failure has no affect on ambient
data collection, and passing results still meet frequency criteria. Results in shaded cells either
exceed documented criteria or are otherwise notable. Table 17 presents observations associated
with the shaded cell results in Table 16.
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. The LCS is not required by the CASTNET QA/QC program. 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 7 presents LCS
analysis results for fourth quarter 2015. All recovery values were between 83 percent and
107 percent.
Blank Results
Figures 8 through 10 present the results of MB, LB, and FB QC sample analyses for fourth
quarter 2015. All fourth quarter results were within criteria (two times the reporting limit) listed
in Table 4 with the exception of three cellulose FB samples. Table 18 summarizes the record of
filter blanks for 2015. All 2015 results were within the two times reporting limit criterion with
the exception of the three cellulose FB samples noted previously, five Teflon FB samples (three
potassium, one calcium, and one sodium), and one Teflon filter acceptance test sample (the
associated box of filters was rejected as required by protocol). The number of FB samples
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exceeding the criterion is high compared with previous years. These results are under
investigation. All other blank QC checks in their respective batches were within criteria.
Suspect/Invalid Filter Pack Samples
Filter pack samples that were flagged as suspect or invalid during each of the four quarters of
2015 are listed in Table 19. This table also includes associated site identification and a brief
description of the reason the sample was flagged. During fourth quarter, 18 filter pack samples
were invalidated.
Field Problem Count
Table 20 presents counts of field problems affecting continuous data collection for more than one
day for each quarter during 2015. 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.
Field Calibration Results
A summary of field calibration failures by parameter for each quarter of 2015 is listed in
Table 21. Calibrations were performed at 25 sites during fourth quarter 2015. During 2015, all
sites and parameters were within the criteria listed in Table 3 with the exception of the
parameters at the eight sites that are listed in Table 21.
Table 22 presents field accuracy results for 2015 based on instrument challenges performed using
independent reference standards during site calibration visits. Each parameter was within its
criterion with at least 90 percent frequency except solar radiation at 81.8 percent frequency. Per
CASTNET project protocols, data are flagged but still considered valid if the calibration criterion
is not exceeded by more than its magnitude (i.e., if within 2x the criterion). All calibration failures
reported in 2015 for the indicated parameters were within 2x the criterion with the exception of
solar radiation at PAL 190, TX. Data associated with the failure were invalidated.
References
Amec Foster Wheeler Environment & Infrastructure, Inc. (Amec Foster Wheeler). 2014. Clean
Air Status and Trends Network (CASTNET) Quality Assurance Project Plan (OAPP)
Revision 8.2. Prepared for U.S. Environmental Protection Agency (EPA), Office of Air
and Radiation, Clean Air Markets Division, Washington, DC. Contract No. EP-W-15-
003. Gainesville, FL. http://java.epa.gov/castnet/documents.do.
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, DOI: 10.1520/E0029-08. www.astm.org.
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U.S. Environmental Protection Agency (EPA). 2015. Appendix A to Part 58 - Quality
Assurance Requirements for State and Local Air Monitoring Stations (SLAMS), Special
Purpose Monitors (SPMs), and Prevention of Significant Deterioration (PSD) Air
Monitoring. 40 CFR Part 58.
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Table 1 Data Validated to Level 3 through Fourth Quarter 2015
Calibration
Group*
Months
Available
Number of
Months
Complete
Quarters
Number of
Quarters
SE-4/MW-61'
July 2014-
June 2015
12
Quarter 3 2014 -
Quarter 2 2015
4
E-l/SE-5
August 2014 -
July 2015
12
Quarter 4 2014 -
Quarter 2 2015
3
MW-7/W-9
September 2014 -
August 2015
12
Quarter 4 2014 -
Quarter 2 2015
3
E-2 /MW-8
October 2014 -
September 2015
12
Quarter 4 2014 -
Quarter 3 2015
4
E-3/W-10*
May 2014-
April 2015
12
Quarter 3 2014 -
Quarter 1 2015
3
Notes: * The sites contained in each calibration group are listed in Table 2.
•f Contains MCK131/231 collocated pair
J Contains ROM206 of the ROM406/ROM206 collocated pair
Table 2 Field Calibration Schedule for 2015
Calibration
Group
Months
Calibrated
Sites
Calibrated
Eastern Sites (24 Total)
E-l
(8 Sites)
February/August
BEL 116, MD
BWR139, MD
WSP144, NJ
CTH110, NY
ARE 128, PA
PSU106, PA
PED108, VA
VPI120, VA
E-2
(11 Sites)
April/October
ABT147, CT
ASH135, ME
HOW191, ME
WST109, NH
CAT175, NY
HWF187, NY
NIC001, NY
WFM007, NY
WFM105, NY
EGB181, ON
UND002, VT
E-3
(5 Sites)
May/November
KEF 112, PA
MKG113, PA
LRL117, PA
PARI07, WV
CDR119, WV
Southeastern Sites (11 Total)
SE-4
(7 Sites)
January/July
SND152, AL
GAS 153, GA
BFT142, NC
CND125, NC
COW005, NC
COW137, NC
SPD111, TN
SE-5
(4 Sites)
February/August
CAD 150, AR
CVL151, MS
IRL141, FL
SUM 15 6, FL
Midwestern Sites (19 Total)
MW-6
(6 Sites)
January/July
CDZ171, KY
CKT136, KY
MCK131, KY
MCK231, KY
PNF126, NC
ESP127, TN
MW-7
(9 Sites)
March/September
ALH157, IL
BVL130, IL
STK138, IL
VIN140, IN
RED004, MN
DCP114, OH
OXF122, OH
QAK172, OH
PRK134, WI
MW-8
(4 Sites)
April/October
SAL133, IN
HOX148, MI
ANA115, MI
UVL124, MI
Western Sites (10 Total)
W-9
(5 Sites)
March/September
KNZ184, KS
KIC003, KS
CHE185, OK
SAN 189, NE
ALC188, TX
W-10
(5 Sites)
May/November
GTH161, CO
ROM206, CO
CNT169, WY
PND165, WY
PAL 190, TX
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Table 3 Data Quality Indicators for CASTNET Continuous Measurements
Measurement
Parameter2 Method
Criteria1
Precision Accuracy
Filter pack flow
Mass flow controller
± 10%
±5%
Ozone3
UV absorbance
All points within ± 2% of full scale of best fit
straight line
Linearity error <5%
Wind speed
Anemometer
± 0.5 m/s
The greater of ± 0.5 m/s
for winds < 5 m/s or
± 5% for winds > 5 m/s
Wind direction
Wind vane
±5°
±5°
Sigma theta
Wind vane
Undefined
Undefined
Ambient temperature
Platinum RTD
± 1.0°C
±0.5°C
Delta temperature
Platinum RTD
± 0.5°C
±0.5°C
Relative humidity
Thin film capacitor
± 10% (of full scale)
± 10%
Precipitation
Tipping bucket rain
gauge
± 10% (of reading)
± 0.05 inch4
Solar radiation
Pyranometer
± 10% (of reading taken
at local noon)
± 10%
Surface wetness
Conductivity bridge
Undefined
Undefined
Notes: °C = degrees Celsius
m/s = meters per second
RTD = resistance-temperature device
UV = ultraviolet
1 Precision criteria apply to collocated instruments, and accuracy criteria apply to calibration of instruments. Collocated precision criteria
do not apply to 40 CFR Part 58 ozone measurements.
2 Meteorological parameters are only measured at five of the EPA-sponsored CASTNET sites: BVL130. IL; BEL116. MD; CHE185. OK;
COW137, NC; and PAL190. TX. '
3 Ozone is not measured at 10 EPA-sponsored CASTNET sites: KIC003. KS; KNZ184. KS; RED004. MN; COW005. NC; EGB181. ON;
CAT175, NY; NIC001. NY; WFM007. NY; WFM105. NY; and UND002. VT.
4 For target value of 0.50 inch
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Table 4 Data Quality Indicators for CASTNET Laboratory Measurements
Analyte
Method
Precision1
(MARPD)
Accuracy2
(%)
Nominal
Reporting Limits
mg/L
(Xg/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 (SO4)
IC
20
95 - 105
0.040
1.0
Notes: 1 This column lists precision goals for both network precision calculated from collocated filter samples and laboratory precision based on
replicate samples.
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.
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
jug 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, (Amec Foster
Wheeler, 2014).
Table 5 Ozone Critical Criteria*
Type of Check
Analyzer Response
Zero
Less than ± 3 parts per billion (ppb)
Span
Less than or equal to ± 7 percent between supplied and observed concentrations
Single Point QC
Less than or equal to ± 7 percent between supplied and observed concentrations
Notes: * Applies to CASTNET sites that are configured and operated in accordance with 40 CFR Part 58 (EPA 2015). 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 6 Trace-level Gas Monitoring Critical Criteria*
Parameter
Analyzer Response
Zero Check
Span Check / Single Point QC Check
S02
Less than ± 3 ppb
Less than or equal to ± 10 percent between supplied and
observed concentrations
NOy
Less than ± 3 ppb
CO
Less than ± 40 ppb
Notes: *Applies to CASTNET sites that are configured and operated in accordance with 40 CFR Part 58 (EPA 2015). 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 E29 (ASTM, 2008).
SO, = sulliir dioxide
NOy = total reactive oxides of nitrogen
CO = carbon monoxide
ppb = parts per billion
Table 7 QC Analysis Count for First Quarter 2015
Filter
Type
Parameter
RF
Sample
Count
ccv
Sample
Count
RP
Sample
Count
MB
Sample
Count
LB
Sample
Count
FB
Sample
Count
Teflon
so2;
53
201
86
18
26
130
no;
53
201
86
18
26
130
nh4
36
185
89
18
26
130
cr
53
201
86
18
26
130
Ca2+
36
186
88
18
26
130
Mg2+
36
186
88
18
26
130
Na+
36
186
88
18
26
130
K+
36
186
88
18
26
130
Nylon
so2;
36
183
83
18
26
130
no;
48
195
89
24
26
136
Cellulose
so2;
37
185
82
18
26
130
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Table 8 QC Analysis Count for Second Quarter 2015
Filter
Type
Parameter
RF
Sample
Count
ccv
Sample
Count
RP
Sample
Count
MB
Sample
Count
LB
Sample
Count
FB
Sample
Count
Teflon
so2;
51
193
82
18
26
96
NOj
51
193
82
18
26
96
nh+4
36
175
81
18
26
96
cr
51
193
82
18
26
96
Ca2+
38
181
83
19
26
96
Mg2+
38
181
83
19
26
96
Na+
38
181
83
19
26
96
K+
38
181
83
19
26
96
Nylon
so2;
37
181
79
18
26
96
NOj
51
195
86
25
26
103
Cellulose
so2;
35
177
80
17
26
96
Table 9 QC Analysis Count for Third Quarter 2015
Filter
Type
Parameter
RF
Sample
Count
CCV
Sample
Count
RP
Sample
Count
MB
Sample
Count
LB
Sample
Count
FB
Sample
Count
Teflon
so2;
51
196
82
18
26
94
NOj
51
196
82
18
26
94
nh+4
36
179
81
18
26
94
cr
51
196
82
18
26
94
Ca2+
36
181
82
18
26
94
Mg2+
36
181
82
18
26
94
Na+
36
181
82
18
26
94
K+
36
181
82
18
26
94
Nylon
so2;
41
182
80
20
26
94
NOj
53
194
86
26
26
100
Cellulose
so2;
37
182
82
18
26
94
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Table 10 QC Analysis Count for Fourth Quarter 2015
Filter
Type
Parameter
RF
Sample
Count
ccv
Sample
Count
RP
Sample
Count
MB
Sample
Count
LB
Sample
Count
FB
Sample
Count
Teflon
so2;
48
180
74
15
24
92
NOj
48
180
74
15
24
92
nh+4
48
155
72
15
22
92
cr
48
180
74
15
24
92
Ca2+
30
160
70
15
22
92
Mg2+
30
160
70
15
22
92
Na+
30
160
70
15
22
92
K+
30
160
70
15
22
92
Nylon
so2;
32
160
72
15
22
92
NOj
44
172
78
21
22
98
Cellulose
so2;
31
160
70
15
22
92
Table 11 Filter Pack Receipt Summary for 2015
Description
First
Quarter
Second
Quarter
Third
Quarter
Fourth
Quarter
Annual
Summary
Count of samples received
more than 14 days after
removal from tower:
22
9
11
9
51
Count of all samples
received:
875
751
832
711
3,169
Fraction of samples
received within 14 days:
0.975
0.988
0.987
0.987
0.984
Average interval in days:
5.190
4.762
4.993
5.224
5.042*
First receipt date:
01/02/2015
04/02/2015
07/01/2015
10/01/2015
01/02/2015
Last receipt date:
03/31/2015
06/25/2015
09/30/2015
12/17/2015
12/17/2015
Notes: *annual average
Amec Foster Wheeler Project No. 6064150003
13 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 12 Filter Pack QC Summary for 2015
Reference
Sample1 Recovery (%R)
Continuing Calibration
Verification Samples (%R)
In-Run Replicate2
(RPD)
Filter Type
Parameter
Mean
Std. Dev.
"i
s
s
o
U
Mean
Std. Dev.
s
s
o
U
Mean
Std. Dev.
"i
s
s
o
U
Teflon
so2;
97.73
1.81
48
99.52
1.38
180
1.21
1.09
74
no;
101.33
1.79
48
98.87
1.64
180
1.34
1.27
74
nh+4
100.34
2.38
30
101.24
1.77
155
0.68
0.84
72
Ca2
98.52
2.19
30
100.15
1.02
160
1.63
3.42
70
Mg2+
100.42
0.93
30
99.95
0.74
160
1.17
1.00
70
Na+
99.12
1.11
30
99.80
1.06
160
1.13
0.81
70
K
98.06
1.75
30
99.83
0.86
160
1.66
1.55
70
Cl"
100.33
1.90
48
102.61
1.32
180
1.60
1.35
74
Nylon
so2;
98.27
0.64
32
99.61
0.92
160
4.40
3.93
72
2
o
101.78
0.99
44
97.79
1.28
172
2.84
2.43
78
Cellulose
so2;
99.51
0.97
31
99.98
0.60
160
6.00
3.66
70
Notes: %R = percent recovery
RPD = relative percent difference
1 Results of reference sample analyses provide accuracy estimates
2 Results of replicate analyses provide precision estimates
3 Number of QC Samples
Table 13 Precision Results for Third Quarter 2014 through Second Quarter 2015
Site
Pairs
SO^
i «
O
z
nh4
Ca2+
Mg2+
Na +
K+
CI
hno3
so2
Total
no3
MCK131/231, KY
2014 Q3
1.36
5.58
1.87
3.76
2.85
2.50
4.23
0.46
2.76
2.72
1.74
2014 Q4
1.53
5.11
1.15
8.32
6.53
4.22
4.41
5.97
5.13
2.67
3.71
2015 Q1
1.86
1.92
1.47
8.16
5.56
8.12
3.56
9.88
3.48
1.63
1.42
2015 Q2
2.21
5.54
1.70
5.17
4.01
2.91
4.60
2.57
3.92
7.44
2.83
Average
1.74
4.54
1.55
6.35
4.74
4.44
4.20
4.72
3.82
3.62
2.43
ROM406/206, CO
2014 Q3
4.33
9.87
5.48
5.43
5.68
6.85
6.16
2.10
5.44
8.66
4.36
2014 Q4
5.72
11.38
6.20
10.50
9.57
9.92
10.61
14.74
8.15
12.91
6.87
2015 Q1
4.03
14.81
5.09
8.62
5.75
9.32
7.64
6.06
7.55
17.83
4.41
2015 Q2
3.70
16.36
5.54
4.18
2.72
3.20
4.60
5.87
1.31
13.16
9.85
Average
4.45
13.11
5.58
7.18
5.93
7.32
7.25
7.19
5.61
13.14
6.37
Notes: 0 of 88 site-quarter-parameters were outside criterion
MARPD = mean absolute relative percent difference
Amec Foster Wheeler Project No. 6064150003
14 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 14 Ozone QC Summary for Fourth Quarter 2015 (1 of 2)
Site ID
% Span
Pass1
Span
|%D |2
% Single
Point QC
Pass1
Single Point
QC |%D|2
Single
Point
QC CL3
% Zero
Pass1
Zero
Average
(ppb)2
ABT147, CT
100.00
0.86
100.00
0.78
0.10
100.00
0.20
ALC188, TX
100.00
0.95
100.00
1.13
0.19
100.00
0.38
ALH157, IL
100.00
0.94
100.00
0.72
0.11
100.00
0.14
ANA115, MI
98.92
1.00
100.00
0.65
0.09
97.80
0.85
ARE128, PA
100.00
0.62
100.00
0.61
0.11
100.00
0.31
ASH135, ME
100.00
0.92
100.00
0.93
0.09
100.00
0.18
BEL 116, MD
100.00
1.33
98.89
1.20
0.26
100.00
0.34
BFT142, NC
100.00
1.19
97.78
1.27
0.24
100.00
0.15
BVL130, IL
100.00
0.70
100.00
1.53
0.09
100.00
0.41
BWR139, MD
100.00
2.60
100.00
3.24
0.17
100.00
0.17
CAD 150, AR
100.00
0.78
98.81
0.91
0.23
100.00
0.34
CDR119, WV
100.00
1.70
100.00
2.08
0.13
100.00
0.28
CDZ171, KY
100.00
0.41
100.00
0.47
0.08
100.00
0.13
CKT136, KY
100.00
0.56
100.00
1.07
0.10
100.00
0.14
CND125, NC
100.00
1.62
98.92
1.20
0.25
100.00
0.23
CNT169, WY
100.00
1.23
100.00
0.77
0.10
100.00
0.71
COW 13 7, NC
100.00
1.26
100.00
1.76
0.13
100.00
0.62
CTH110, NY
95.96
2.82
98.99
1.68
1.08
93.94
1.83
CVL151, MS
100.00
0.76
100.00
0.88
0.15
100.00
0.28
DCP114, OH
98.57
2.16
100.00
1.17
0.21
100.00
0.19
ESP127, TN
100.00
0.66
100.00
0.60
0.08
100.00
0.16
GAS153, GA
90.20
1.88
89.22
1.89
0.47
100.00
0.57
GTH161, CO
91.35
3.60
92.93
3.76
0.46
100.00
0.22
Amec Foster Wheeler Project No. 6064150003
15 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 14 Ozone QC Summary for Fourth Quarter 2015 (2 of 2)
Site ID
% Span
Pass1
Span
|%D |2
% Single
Point QC
Pass1
Single Point
QC |%D|2
Single
Point
QC CL3
% Zero
Pass1
Zero
Average
(ppb)2
HOX148, MI
100.00
0.28
100.00
1.10
0.08
100.00
0.74
HWF187, NY
100.00
0.84
100.00
0.88
0.07
100.00
0.11
IRL141, FL
100.00
2.44
100.00
1.66
0.24
100.00
0.91
KEF 112, PA
100.00
2.63
100.00
2.86
0.22
100.00
0.21
LRL117, PA
100.00
0.63
97.92
0.94
0.28
98.96
0.33
MCK131, KY
98.94
1.42
98.94
1.65
0.19
100.00
0.40
MCK231, KY
100.00
1.23
100.00
1.64
0.19
100.00
0.56
MKG113, PA
100.00
0.54
100.00
0.48
0.05
100.00
0.13
OXF122, OH
100.00
1.60
98.95
2.15
0.24
98.95
0.83
PAL 190, TX
100.00
1.16
100.00
1.52
0.20
100.00
0.27
PARI07, WV
100.00
0.85
98.82
1.18
0.30
100.00
0.54
PED108, VA
98.95
3.59
97.89
3.76
0.20
100.00
0.31
PND165, WY
100.00
1.20
100.00
2.45
0.11
100.00
0.60
PNF126, NC
100.00
1.62
100.00
1.88
0.12
100.00
0.25
PRK134, WI
100.00
1.42
100.00
1.10
0.22
100.00
0.44
PSU106, PA
100.00
2.80
100.00
3.10
0.10
100.00
0.21
QAK172, OH
100.00
0.99
100.00
0.57
0.13
100.00
0.22
ROM206, CO
100.00
1.03
100.00
1.21
0.17
100.00
0.19
SAL133, IN
100.00
0.83
100.00
0.99
0.13
100.00
0.21
SAN 189, NE
100.00
0.47
100.00
0.43
0.06
100.00
0.10
SND152, AL
100.00
1.69
100.00
2.10
0.16
100.00
0.36
SPD111, TN
100.00
0.63
100.00
0.82
0.14
100.00
0.24
STK138, IL
78.85
8.12
79.81
5.85
2.08
86.54
2.05
SUM 15 6, FL
100.00
1.11
98.84
1.31
0.26
100.00
0.43
UVL124, MI
100.00
0.87
100.00
0.93
0.07
100.00
0.12
VIN140, IN
100.00
0.40
100.00
0.51
0.07
100.00
0.30
VPI120, VA
100.00
0.66
100.00
0.86
0.08
100.00
0.32
WSP144, NJ
100.00
1.08
100.00
0.95
0.13
98.90
0.64
WST109, NH
100.00
0.37
100.00
0.47
0.08
100.00
0.16
Notes: 1 Percentage of comparisons that pass the criteria listed in Table 5. Values falling below 90 percent are addressed in Table 15.
2 Absolute value of the average percent differences between the on-site transfer standard and the site monitor. Values exceeding the
criteria listed in Table 5 are addressed in Table 15.
3 90 percent confidence limit of the coefficient of variation. This should be less than or equal to the 7 percent single point QC check
critical criterion. Values exceeding this criterion are addressed in Table 15.
%D = percent difference
CL = confidence limit
ppb = parts per billion
Amec Foster Wheeler Project No. 6064150003
16
Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 15 Ozone QC Observations for Fourth Quarter 2015
Site ID
QC Criterion
Comments
GAS153, GA
% Single Point QC Pass
The sample pump failed in late December. Associated data
will be invalidated.
STK138, IL
% Span Pass
Span %D
% Single Point QC Pass
% Zero Pass
There was a leak in the sampling system in early October.
Associated data were invalidated.
Notes: %D = percent difference
Amec Foster Wheeler Project No. 6064150003
17 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 16 Trace-level Gas QC Summary for Fourth Quarter 2015
Parameter
% Span
Pass1
Span
|%D |2
% Single
Point QC
Pass1
Single Point
QC |%D|2
Single
Point
QC CL3
% Zero
Pass1
Zero
Average
(ppb)2
BEL116
, MD
S02
97.30
3.26
94.59
3.39
1.13
100.00
0.50
NOy
92.50
5.77
95.00
5.13
0.83
97.56
2.26
BVL130, IL
S02
90.20
6.79
88.24
28.03
21.60
88.24
8.25
NOy
100.00
2.59
100.00
2.38
0.43
97.87
0.57
CO
97.73
3.25
79.55
10.71
4.56
90.70
14.11
HWF187, NY
NOy
100.00
1.41
100.00
2.18
0.36
98.00
0.71
PND165
WY
NOy
97.92
4.28
97.96
6.77
3.59
100.00
0.25
PNF126
, NC
NOy
100.00
5.18
97.73
5.95
0.51
100.00
0.34
ROM206, CO
NOy
100.00
1.53
100.00
2.27
0.38
97.87
0.59
Notes: 1 Percentage of comparisons that pass the criteria listed in Table 6. Values falling below 90 percent are addressed in Table 17.
2 Absolute value of the average percent differences between the supplied and observed concentrations. Values exceeding the criteria
listed in Table 6 are addressed in Table 17.
3 90 percent confidence limit of the coefficient of variation. This should be less than or equal to the 10 percent single point QC check
critical criterion. Values exceeding this criterion are addressed in Table 17.
%D = percent difference
CL = confidence limit
ppb = parts per billion
Table 17 Trace-level Gas QC Observations for Fourth Quarter 2015
Site ID
Parameter
QC Criterion
Comments
BVL130, IL
S02
% Single Point QC Pass
Single Point QC %D
Single Point QC CL
% Zero Pass
Zero Average
The analyzer malfunctioned in November.
Associated data were invalidated.
BVL130, IL
CO
% Single Point QC Pass
Single Point QC %D
The sample pump failed in November.
Associated data were invalidated.
Notes: %D = percent difference
CL = confidence limit
Amec Foster Wheeler Project No. 6064150003
18 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 18 Summary of Filter Blanks for 2015 (1 of 2)
Parameter Name
Detection
Limit
Total p,g
Total
Number
Number >
Detection
Limit
Average
Total p,g
Average
Absolute
Deviation
Maximum
Total |ig
FIELD BLANKS
Teflon-NH+4-N
0.500
414
0
0.500
0.000
0.500
Teflon- NOrN
0.200
414
4
0.200
0.001
0.288
Teflon- SO2"
1.000
414
0
1.000
0.000
1.000
Cl"
0.500
414
2
0.502
0.003
1.178
Ca2
0.150
414
7
0.151
0.003
0.453
Mg2+
0.075
414
1
0.075
0.000
0.078
Na+
0.125
414
3
0.126
0.002
0.525
K
0.150
414
3
0.172
0.044
8.680
Nylon- NOrN
0.200
440
0
0.200
0.000
0.200
Nylon - SO2"
1.000
414
0
1.000
0.000
1.000
Cellulose - SO2
2.000
414
44
2.124
0.223
9.295
LABORATORY BLANKS
Teflon-NH+4-N
0.500
102
0
0.500
0.000
0.500
Teflon- NO"3-N
0.200
102
0
0.200
0.000
0.200
Teflon- SO2"
1.000
102
0
1.000
0.000
1.000
Cl"
0.500
102
0
0.500
0.000
0.500
Ca2+
0.150
102
0
0.150
0.000
0.150
Mg2+
0.075
102
0
0.075
0.000
0.075
Na+
0.125
102
0
0.125
0.000
0.125
K
0.150
102
0
0.150
0.000
0.150
Nylon- NO"3-N
0.200
102
0
0.200
0.000
0.200
Nylon -SO2"
1.000
102
0
1.000
0.000
1.000
Cellulose -SO2
2.000
102
1
2.016
0.032
3.660
METHOD BLANKS
Teflon-NH+4-N
0.500
70
0
0.500
0.000
0.500
Teflon- NO"3-N
0.200
70
0
0.500
0.000
0.200
Teflon- SO2"
1.000
70
0
0.500
0.000
1.000
ci-
0.500
70
0
0.500
0.000
0.500
Ca2
0.150
71
0
0.493
0.000
0.150
Mg2+
0.075
71
0
0.493
0.000
0.075
Na+
0.125
71
0
0.493
0.000
0.125
K
0.150
71
0
0.493
0.000
0.150
Nylon- NO"3-N
0.200
98
0
0.357
0.000
0.200
Nylon -SO2"
1.000
72
0
0.486
0.000
1.000
Cellulose -SO2
2.000
69
0
0.507
0.000
2.000
Amec Foster Wheeler Project No. 6064150003
19 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 18 Summary of Filter Blanks for 2015 (2 of 2)
Parameter Name
Detection
Limit
Total p,g
Total
Number
Number >
Detection
Limit
Average
Total |ig
Average
Absolute
Deviation
Maximum
Total |ig
ACCEPTANCE TEST VALUES
Teflon-NH+4-N
0.500
216
0
0.500
0.000
0.500
Teflon- NO;-N
0.200
216
0
0.200
0.000
0.200
Teflon- SO2"
1.000
216
0
1.000
0.000
1.000
Cl"
0.500
216
0
0.500
0.000
0.500
Ca2
0.150
216
0
0.150
0.000
0.150
Mg2+
0.075
216
0
0.075
0.000
0.075
Na+
0.125
216
0
0.125
0.000
0.125
K
0.150
216
1
0.161
0.022
2.486
Nylon- NO;-N
0.200
200
0
0.200
0.000
0.200
Nylon -SO2"
1.000
200
0
1.000
0.000
1.000
Cellulose -SO2
2.000
270
0
2.000
0.000
2.000
Note: Cellulose filters are not analyzed for ambient N03. The blank results are used only for QC.
Amec Foster Wheeler Project No. 6064150003
20 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 19 Filter Packs Flagged as Suspect or Invalid
Site ID
Sample
Reason
First Quarter 2015
ALC188, TX
1502001-03
Potassium data
suspect and
flagged as invalid.
CAN407, UT
1505001-14
Insufficient flow
volume
CDR119, WV
1503001-16
Concentration data
suspect and
flagged as invalid.
CDZ171, KY
1507001-17
Insufficient flow
volume
GRS420, TN
1502001-36
Concentration data
suspect and
flagged as invalid.
KIC003, KS
1503001-44
Insufficient flow
volume
LAV410, CA
1506001-46
Flow system
malfunctioned
LRL117, PA
1502001-47
1503001-47
1505001-47
Concentration data
suspect and
flagged as invalid.
Second Quarter 2015
BUF603, WY
1517003-02
Insufficient flow
volume
FOR605, WY
1518003-03
Insufficient flow
volume
GLR468, MT
1518001-33
Insufficient flow
volume
HWF187, NY
1517001-40
Insufficient flow
volume
IRL14LFL
1516001-41
Insufficient flow
volume
JOT403, CA
1518001-42
Insufficient flow
volume
KIC003, KS
1519001-44
Insufficient flow
volume
MCK231, KY
1515001-50
Potassium data
invalidated
PND165, WY
1520001-60
Insufficient flow
volume
ROM206, CO
1520001-66
Insufficient flow
volume
STK138, IL
1520001-74
Insufficient flow
volume
Site ID
Sample
Reason
Third Quarter 2015
BEL 116, MD
1533001-09
Insufficient flow
volume
CAD150, AR
1530001-13
Insufficient flow
volume
DCP114, OH
1537001-26
Power failure resulted
in insufficient flow
volume
FOR605, WY
1531003-03
Insufficient flow
volume
JOT403, CA
1531001-42
Insufficient flow
volume
PNF126, NC
1531001-61
Power failure resulted
in insufficient flow
volume
PSU106, PA
1536001-63
Insufficient flow
volume
SHN418, VA
1536001-71
Insufficient flow
volume
VTN140, IN
1536001-80
Insufficient flow
volume
Fourth Quarter 2015
CNT169, WY
1545001-22
1546001-22
Insufficient flow
volume
DCP114, OH
1546001-26
1548001-26
1549001-26
Insufficient flow
volume
DIN431. UT
1541001-28
1543001-28
1544001-28
Insufficient flow
volume
FOR605, WY
1544003-03
Insufficient flow
volume
GRS420, TN
1541001-36
1542001-36
Insufficient flow
volume
JOT403, CA
1544001-42
Insufficient flow
volume
PAL 190, TX
1548001-55
Insufficient flow
volume
PND165, WY
1548001-60
Insufficient flow
volume
WFM007, NY
1541001-83
1542001-83
Suspect data
YEL408, WY
1541001-88
Insufficient flow
volume
YOS404,CA
1548001-89
Insufficient flow
volume
Amec Foster Wheeler Project No. 6064150003
21 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 20 Field Problems Affecting Data Collection
Days to Resolution
Problem Count
First Quarter 2015
30
230
60
8
90
3
Unresolved by End of Quarter
10
Second Quarter 2015
30
230
60
5
90
1
Unresolved by End of Quarter
33
Third Quarter 2015
30
337
60
15
90
3
Unresolved by End of Quarter
24
Fourth Quarter 2015
30
228
60
11
90
0
Unresolved by Date of Publication
13
Amec Foster Wheeler Project No. 6064150003
22 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 21 Field Calibration Failures by Parameter for 2015
Site ID
Parameter(s)
First Quarter 2015
BVL130, IL
Flow Rate
Temperature
Wind Direction
CHE185, OK
Solar Radiation
CKT136, KY
Temperature
CTH110, NY
Flow Rate
Second Quarter 2015
PAL 190, TX
Solar Radiation
Third Quarter 2015
BEL 116, MD
Wind Direction
CAD 150, AR
Flow Rate
Fourth Quarter 2015
ABT147, CT
Flow Rate
Note: Per CASTNET project protocols, data for all parameters except flow are flagged as
"suspect" (S) but still considered valid if the calibration criterion is not exceeded by
more than its magnitude (i.e., if within 2x the criterion). If flow calibrations fall within
2x the criterion, these data are adjusted per approved protocol described in the
CASTNET QAPP, (Amec Foster Wheeler, 2014). Please refer to Table 14 for
documentation of the QC failures affecting the validity of ozone data.
Amec Foster Wheeler Project No. 6064150003
23 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Table 22 Accuracy Results for 2015 Field Measurements
Parameter
Percent Within Criterion
Flow Rate
96.8
Wind Speed < 5 m/s
100.0
Wind Speed > 5 m/s
100.0
Wind Direction North
90.9
Wind Direction South
90.9
Temperature (0°C)
99.2
Temperature (ambient)
98.4
Delta Temperature (0°C)
100.0
Delta Temperature (ambient)
100.0
Relative Humidity
100.0
Precipitation
100.0
Solar Radiation*
81.8
Wetness (within 0.5 volts)
100.0
Notes: °C = degrees Celsius
m/s = meters per second
* = Per CASTNET project protocols, data are flagged as "suspect" (S) but still considered
valid if the calibration criterion is not exceeded by more than its magnitude (i.e., if within
2xthe criterion). All calibration failures reported in 2015 for the indicated parameters
were within 2xthe criterion with the exception of solar radiation at PAL190, TX.
Associated data were invalidated.
Amec Foster Wheeler Project No. 6064150003
24 Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report—Fourth Quarter 2015 with 2015 Annual Summary
Figure 1 PND165, WY 1-Minute Trace-level Gas Data (ppb) - September 14, 2015
Amec Foster Wheeler Project No. 6064150003
25
Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report—Fourth Quarter 2015 with 2015 Annual Summary
Figure 2 PND165, WY 1-Minute Trace-level Gas Data (ppb) - September 15, 2015
Amec Foster Wheeler Project No. 6064150003
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Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report—Fourth Quarter 2015 with 2015 Annual Summary
Figure 3 Reference Standard Results for Fourth Quarter 2015 (percent recovery)
110
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Amec Foster Wheeler Project No. 6064150003
27
Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report—Fourth Quarter 2015 with 2015 Annual Summary
Figure 4 Continuing Calibration Spike Results for Fourth Quarter 2015 (percent recovery)
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Amec Foster Wheeler Project No. 6064150003
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Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report—Fourth Quarter 2015 with 2015 Annual Summary
Figure 5 Replicate Sample Analysis Results for Fourth Quarter 2015 (percent difference)
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Amec Foster Wheeler Project No. 6064150003
29
Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — Fourth Quarter 2015 with 2015 Annual Summary
Figure 6 Percent Completeness of Measurements for Second Quarter 2014 through Third Quarter 2015*
Average for Continuous Measurements i
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Scalar Wind Speed i
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Note: *Presents Level 3 data available during the fourth quarter of 2015
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Amec Foster Wheeler Project No. 6064150003
30
Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report—Fourth Quarter 2015 with 2015 Annual Summary
Figure 7 Laboratory Control Sample Results for Fourth Quarter 2015 (percent recovery)
120
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Amec Foster Wheeler Project No. 6064150003
31
Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report—Fourth Quarter 2015 with 2015 Annual Summary
Figure 8 Method Blank Analysis Results for Fourth Quarter 2015 (total micrograms)
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Amec Foster Wheeler Project No. 6064150003
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Amec Foster Wheeler Environment & Infrastructure, Inc.
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report—Fourth Quarter 2015 with 2015 Annual Summary
Figure 9 Laboratory Blank Analysis Results for Fourth Quarter 2015 (total micrograms)
0.16
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A TS04# TN03® TNH4 A C
-------
EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report—Fourth Quarter 2015 with 2015 Annual Summary
Figure 10 Field Blank Analysis Results for Fourth Quarter 2015 (total micrograms)
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Amec Foster Wheeler Project No. 6064150003
34
Amec Foster Wheeler Environment & Infrastructure, Inc.
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