Summary of Quarterly Operations (January through March)
EPA Contract No. EP-W-15-003
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 first
quarter 2016. 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.
Quarterly Summary
The annual management review meeting in support of maintaining International Organization for
Standardization (ISO)/International Electrotechnical Commission (IEC) 17025:2005
accreditation by the American Association for Laboratory Accreditation (A2LA) was held in
early January 2016. The meeting participants discussed the annual management review report
distributed to the management group in December 2015. The agenda covered discussion of the
status of the program as well as program goals for 2015 and 2016.
During review of third quarter 2015 filter pack sulfur dioxide (S02) concentrations in January
2016, as part of the preparation of the CASTNET Third Quarter 2015 Data Report, it became
apparent that aggregates of the S02 data for the eastern reference sites were not reasonable when
compared with long-term third quarter time series. Amec Foster Wheeler immediately began
evaluating possible causes of the anomalous measurements. The EPA Contract-level Project
Officer was notified as per ISO 17025 management system protocol. After this discussion, Amec
Foster Wheeler removed the SO,-related discussions from the third quarter report and worked
with EPA to remove these data from the publicly available database. The cause of the anomalous
measurements correlates with the laboratory's change to a different supplier of the reagent used
to prepare the cellulose filter impregnation solution. This supplier was used for filter pack
samples that ran from mid-May through December 2015. The prepared impregnation solutions
passed acceptance testing prior to use. The cellulose filter extracts were tested for elevated
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nitrate (NO,) concentrations as well as sulfate (S024) concentrations to see if something was
enhancing conductivity responses for detected analytes. Amec Foster Wheeler's laboratory re-
analyzed previously exposed samples from selected eastern and northeastern CASTNET sites.
Samples from June through September show higher N03, which was not seen in previously
exposed samples that used reagent from the usual supplier. Amec Foster Wheeler began running
statistical analyses for further evaluation of the Teflon and nylon filter S024 concentrations.
While some of these tests seem to indicate a suspect reagent, they are not conclusive. The
investigation to determine root cause is, therefore, ongoing. Amec Foster Wheeler is also
evaluating additional acceptance procedures for new suppliers and screening procedures to
facilitate early identification of results that are anomalous in comparison with historical trends.
Data from the 9-meter temperature sensor at the CKT136, KY site were suspect for 6 to 12
months. Amec Foster Wheeler reviewed data from the site and determined that six months of
data need to be invalidated. The remaining six months can be rescaled.
Amec Foster Wheeler received final results for analyses submitted for proficiency test (PT)
study 0107 for Rain and Soft Waters from the National Laboratory of Environmental Testing
(NLET), a branch of the National Water Research Institute (NWRI) with Environment Canada
that provides quality assurance services. One ammonia sample was flagged "warning high."
Ammonia and sulfate results were "biased high." These ratings require no formal corrective
actions under the requirements of accreditation1. All other results were rated as "ideal." Amec
Foster Wheeler's overall laboratory rating remains "very good."
During first quarter 2016, two subcontractors were subject to corrective action for their failure to
properly verify operation of site equipment (erroneous entry of temperature calibration factors at
CKT136, KY and failure to maintain specified operating temperatures during ozone instrument
reverification at CVL151, MS).
Table 1 lists the quarters of data that were validated to Level 3 during first quarter 2016 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
1 Formal corrective actions are required for:
~ Individual test results that are greater than 3 c from the assigned value.
~ Youden average rank for a parameter outside of the 95 percent confidence interval of the overall rank with a
bias percent slope greater than an absolute value of 5.
~ Consecutive study results for the same parameter with Youden average rank outside of the 95 percent
confidence interval of the overall rank without regard to bias percent slope.
~ Three or more parameters with Youden average rank outside of the 95 percent confidence interval of the overall
rank in a single study without regard to bias percent slope.
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presents the critical criteria for ozone monitoring. Table 5 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. Table 6 presents the number of analyses in each category that were performed
during first quarter 2016.
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 first quarter 2016.
Data Quality Indicator (DQI) Results
Figures 1 through 3 present the results of RF, CCV, and RP QC sample analyses for first
quarter 2016. All results were within the criteria listed in Table 32
Table 8 presents summary statistics of critical criteria measurements at ozone sites collected
during first quarter 2016. 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 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 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 first quarter 2016. 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 11 presents observations associated
with the shaded cell results in Table 10.
2 The highest value depicted in Figure 3 is 20.4 percent. This is within criteria per the established rounding rules.
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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 4 presents LCS
analysis results for first quarter 2016. All recovery values were between 85 percent and
120 percent.
Blank Results
Figures 5 through 7 present the results of MB, LB, and FB QC sample analyses for first
quarter 2016. All first quarter results were within criteria (two times the reporting limit) listed in
Table 3 with the exception of one Teflon FB sample with potassium at 16 times the reporting
limit. All other QC results associated with this sample were within criteria. Sample results from
THR422, ND, the associated site, were within the expected range for the site and season.
Suspect/Invalid Filter Pack Samples
Filter pack samples that were flagged as suspect or invalid during first quarter 2016 are listed in
Table 12. This table also includes associated site identification and a brief description of the
reason the sample was flagged. During first quarter, 21 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 first quarter 2016. 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
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. https://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, DOL10.1520/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 during First Quarter 2016
Calibration
Months
Number of
Complete
Number of
Group*
Available
Months
Quarters
Quarters
E-3/W-10t
May 2015-
6
Quarter 3 2015
1
October 2015
SE-4/MW-6*
July 2015-
6
Quarter 3 2015 —
2
December 2015
Quarter 4 2015
Notes: * The sites contained in each calibration group are listed in Table 2.
•f Contains ROM206 of the ROM406/ROM206 collocated pair
J Contains MCK131/231 collocated pair
Table 2 Field Calibration Schedule for 2016
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 (11 Total)
W-9
(5 Sites)
March/September
KNZ184, KS
KIC003, KS
CHE185, OK
SAN 189, NE
ALC188, TX
W-10
(6 Sites)
May/November
GTH161, CO
ROM206, CO
NPT006, ID
CNT169, WY
PND165, WY
PAL 190, TX
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Table 3 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 4 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 Part 58 of Title 40 of the Code of Federal Regulations
(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 5 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 Part 58 of Title 40 of the Code of Federal Regulations
(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, = sulfur dioxide
NOy = total reactive oxides of nitrogen
CO = carbon monoxide
ppb = parts per billion
Table 6 QC Analysis Count for First Quarter 2016
Filter
Type
Parameter
RF
Sample
Count
ccv
Sample
Count
RP
Sample
Count
MB
Sample
Count
LB
Sample
Count
FB
Sample
Count
Teflon
so2;
60
226
96
20
30
91
no;
60
226
96
20
30
91
nh+4
40
204
96
20
30
91
cr
60
226
96
20
30
91
Ca2+
40
208
96
20
30
91
Mg2+
40
208
96
20
30
91
Na+
40
208
96
20
30
91
K+
40
208
96
20
30
91
Nylon
so2;
39
190
85
20
28
91
no;
43
194
87
22
28
93
Cellulose
so2;
43
200
85
19
28
91
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Table 7 Filter Pack Receipt Summary for First Quarter 2016
Count of samples received more than 14 days
after removal from tower:
15
Count of all samples received:
837
Fraction of samples received within 14 days:
0.982
Average interval in days:
5.373
First receipt date:
01/04/2016
Last receipt date:
03/30/2016
Table 8 Ozone QC Summary for First Quarter 2016 (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
0.72
100.00
0.69
0.06
100.00
0.17
ALC188, TX
100.00
1.19
100.00
1.23
0.18
100.00
0.27
ALH157, IL
100.00
1.06
100.00
0.81
0.11
100.00
0.15
ANA115, MI
100.00
0.65
100.00
0.75
0.09
100.00
0.41
ARE128, PA
100.00
0.99
100.00
1.01
0.15
100.00
0.27
ASH135, ME
98.75
1.41
100.00
0.62
0.08
100.00
0.15
BEL 116, MD
100.00
0.47
100.00
0.45
0.07
100.00
0.18
BFT142, NC
100.00
1.62
100.00
1.72
0.15
100.00
0.14
BVL130, IL
100.00
1.10
100.00
2.09
0.08
100.00
0.45
BWR139, MD
100.00
2.03
100.00
2.19
0.27
96.70
0.40
CAD 150, AR
100.00
0.95
100.00
0.76
0.10
100.00
0.27
CDR119, WV
100.00
1.30
100.00
1.57
0.13
100.00
0.29
CDZ171, KY
100.00
0.49
100.00
0.71
0.07
100.00
0.14
CKT136, KY
100.00
0.52
100.00
0.88
0.10
100.00
0.16
CND125, NC
98.92
0.78
100.00
0.63
0.12
100.00
0.21
CNT169, WY
100.00
2.34
100.00
1.31
0.16
100.00
0.75
COW 13 7, NC
100.00
1.65
100.00
2.07
0.11
100.00
0.19
CTH110, NY
100.00
0.77
100.00
0.94
0.12
100.00
0.34
CVL151, MS
100.00
0.88
100.00
0.81
0.15
100.00
0.24
DCP114, OH
100.00
0.60
100.00
0.73
0.13
100.00
0.11
ESP127, TN
100.00
0.70
100.00
0.64
0.12
100.00
0.20
GAS 153, GA
83.00
8.70
85.86
8.77
4.08
100.00
0.30
GTH161, CO
85.15
4.58
89.11
4.57
0.38
100.00
0.17
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Table 8 Ozone QC Summary for First Quarter 2016 (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
0.29
100.00
0.77
0.09
100.00
0.62
HWF187, NY
100.00
0.91
100.00
0.84
0.07
100.00
0.11
IRL141, FL
100.00
1.19
100.00
1.14
0.16
100.00
0.33
KEF 112, PA
96.25
3.38
93.75
3.64
0.53
100.00
0.23
LRL117, PA
100.00
0.20
100.00
0.60
0.07
100.00
0.22
MCK131, KY
100.00
0.49
100.00
0.58
0.11
100.00
0.25
MCK231, KY
100.00
0.64
100.00
0.61
0.13
100.00
0.19
MKG113, PA
100.00
0.63
100.00
0.58
0.06
100.00
0.15
OXF122, OH
100.00
0.78
100.00
1.02
0.14
98.89
0.68
PAL 190, TX
100.00
0.87
100.00
1.04
0.11
100.00
0.18
PARI07, WV
100.00
2.38
100.00
1.86
0.21
100.00
0.25
PED108, VA
83.67
9.44
83.67
9.53
3.09
100.00
0.19
PND165, WY
100.00
1.11
100.00
2.63
0.13
100.00
0.57
PNF126, NC
100.00
2.05
100.00
2.38
0.08
100.00
0.23
PRK134, WI
97.92
4.42
92.63
4.87
0.36
100.00
0.44
PSU106, PA
100.00
1.58
100.00
1.65
0.22
100.00
0.26
QAK172, OH
100.00
0.65
100.00
0.43
0.08
100.00
0.14
ROM206, CO
98.84
1.41
100.00
0.53
0.09
100.00
0.14
SAL133, IN
100.00
0.76
100.00
0.77
0.10
100.00
0.26
SAN 189, NE
87.88
12.32
87.88
12.73
5.38
100.00
0.16
SND152, AL
100.00
1.07
100.00
1.33
0.14
100.00
0.22
SPD 111, TN
100.00
0.83
100.00
0.76
0.18
100.00
0.27
STK138, IL
100.00
0.70
100.00
0.52
0.08
100.00
0.61
SUM 15 6, FL
100.00
0.78
98.94
1.10
0.32
98.94
0.50
UVL124, MI
100.00
0.96
100.00
0.97
0.07
100.00
0.17
VIN140, IN
100.00
2.19
100.00
2.37
0.21
100.00
0.26
VPI120, VA
100.00
0.61
100.00
0.89
0.10
100.00
0.30
WSP144, NJ
98.91
0.82
98.91
0.85
0.20
100.00
0.38
WST109, NH
95.74
4.47
95.79
4.59
3.40
100.00
0.13
Notes: 1 Percentage of comparisons that pass the criteria listed in Table 4. Values falling below 90 percent are addressed in Table 9.
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 4 are addressed in Table 9.
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 9.
%D = percent difference
CL = confidence limit
ppb = parts per billion
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Table 9 Ozone QC Observations for First Quarter 2016
Site ID
QC Criterion
Comments
GAS153, GA
% Span Pass
Span %D
% Single Point QC Pass
Single Point QC %D
QC failures occurred due to a leak in the sample lines
from 1/27/16 to 1/30/16. Associated data were
invalidated.
GTH161, CO
% Span Pass
% Single Point QC Pass
Intermittent QC failures occurred in late January.
Associated data were invalidated.
PED108, VA
% Span Pass
Span %D
% Single Point QC Pass
Single Point QC %D
The sample pump failed on 1/7/16 and was replaced
1/14/16. Associated data were invalidated.
SAN 189, NE
% Span Pass
Span %D
% Single Point QC Pass
Single Point QC %D
The sample pump failed on 2/11/16 and was replaced
on 2/17/16. Associated data were invalidated.
Note: %D = percent difference
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Table 10 Trace-level Gas QC Summary for First Quarter 2016
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
88.37
12.89
86.05
14.26
8.17
100.00
0.59
NOy
78.57
6.12
79.31
5.83
1.93
96.55
3.48
BVL130, IL
S02
100.00
2.10
100.00
4.26
0.52
100.00
0.75
NOy
100.00
3.91
100.00
4.30
0.49
100.00
1.01
CO
100.00
0.76
78.72
6.87
1.03
97.96
12.59
HWF187, NY
NOy
100.00
1.29
100.00
1.74
0.39
100.00
0.21
PND165, WY
NOy
100.00
1.39
100.00
3.62
0.52
100.00
0.13
PNF126, NC
NOy
97.78
3.57
100.00
4.53
0.71
100.00
0.64
ROM206, CO
NOy
100.00
1.34
100.00
2.48
0.27
100.00
0.44
Notes: 1 Percentage of comparisons that pass the criteria listed in Table 5. Values falling below 90 percent are addressed in Table 11.
2 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.
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 11.
%D = percent difference
CL = confidence limit
ppb = parts per billion
Table 11 Trace-level Gas QC Observations for First Quarter 2016
Site ID
Parameter
QC Criterion
Comments
BEL 116, MD
S02
% Span Pass
Span %D
% Single Point QC Pass
Single Point QC %D
The analyzer malfunctioned 3/11/16. Repairs
were completed and calibration verified on
3/23/16. Associated data were invalidated.
BEL 116, MD
NOy
% Span Pass
% Single Point QC Pass
Zero Average
The analyzer drifted out of calibration 1/7/16
and was recalibrated on 1/21/16. Associated
data were invalidated.
BVL130, IL
CO
% Single Point QC Pass
The analyzer drifted out of calibration 2/28/16
and was recalibrated on 3/18/16. Associated
data were invalidated.
Notes: %D = percent difference
CL = confidence limit
Amec Foster Wheeler Project No. 6064150003
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — First Quarter 2016
Table 12 Filter Packs Flagged as Suspect or Invalid during First Quarter 2016
Site ID
Sample No.
Reason
BEL 116, MD
1609001-06
Insufficient flow data due to problems with telemetry
BFT142, NC
1605001-07
Insufficient flow volume
CHE185, OK
1611004-02
Insufficient flow data due to problems with telemetry
COW005, NC
1602003-01
Insufficient flow volume
CTH110, NY
1602001-24
Insufficient flow volume due to power failure
DCP114, OH
1611001-21
1612001-21
Insufficient flow data due to problems with telemetry
DIN431, UT
1602001-28
1604003-06
1605003-06
Insufficient flow volume due to a leak in the flow system
GAS 153, GA
1602001-32
"Calibrator onsite" flags applied in error for 1602001-32.
1608001-24
Flow data should be recoverable for this sample.
Insufficient flow data due to problems with telemetry for
sample 1608001-24.
NIC001, NY
1602001-53
Insufficient flow volume due to power failure
PRK134, WI
1612001-43
Insufficient flow volume
ROM406, CO
1602001-67
Insufficient flow volume due to a leak in the flow system
SPD 111, TN
1603001-49
Insufficient flow volume for both samples. Problems with
1611001-49
telemetry for sample 1611001-49.
WNC429, SD
1604003-23
Insufficient flow volume
YOS404, CA
1604003-25
1609003-25
1611003-25
Insufficient flow volume due to a malfunctioning flow pump.
Table 13 Field Problems Affecting
Data Collection
Days to Resolution
Problem Count
30
244
60
3
90
0
Unresolved by End of Quarter
5
Amec Foster Wheeler Project No. 6064150003
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — First Quarter 2016
Figure 1 Reference Standard Results for First Quarter 2016 (percent recovery)
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — First Quarter 2016
Figure 2 Continuing Calibration Spike Results for First Quarter 2016 (percent recovery)
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Amec Foster Wheeler Project No. 6064150003
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — First Quarter 2016
Figure 3 Replicate Sample Analysis Results for First Quarter 2016 (percent difference)
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Amec Foster Wheeler Project No. 6064150003
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — First Quarter 2016
Figure 4 Laboratory Control Sample Results for First Quarter 2016 (percent recovery)
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EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — First Quarter 2016
Figure 5 Method Blank Analysis Results for First Quarter 2016 (total micrograms)
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-------
EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — First Quarter 2016
Figure 6 Laboratory Blank Analysis Results for First Quarter 2016 (total micrograms)
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-------
EPA Contract No. EP-W-15-003
CASTNET Quality Assurance Report — First Quarter 2016
Figure 7 Field Blank Analysis Results for First Quarter 2016 (total micrograms)
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