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BAM-1020 PM 2.5 Federal Equivalent Method Monitor - PowerPoint PPT Presentation
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BAM-1020 PM 2.5 Federal Equivalent Method Monitor. David Gobeli, Ph.D. April 11, 2008. Update (4/08). BAM-1020 PM 2.5 FEM designation application successfully completed by Met One BAM-1020 PM 2.5 FEM published in Federal Register 3/08 as Class III Equivalent Method EQPM-0308-170
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Presentation Transcript
Update (4/08)
- BAM-1020 PM2.5 FEM designation application successfully completed by Met One
- BAM-1020 PM2.5 FEM published in Federal Register 3/08 as Class III Equivalent Method
- EQPM-0308-170
- Manual is being updated to reflect these changes
Background
- 40CFR §53 revised in October, 2006
- No Coarse (PM10-2.5) Standard
- Very unexpected change of course
- US network will be minimal (~75 sites total, probably far fewer with automatic monitors)
- At least 5 years before issue is revisited.
- 1987 PM10 regulations reaffirmed
- Detailed designation procedures developed for automatic (Class III) PM2.5 monitors
New Regulations 40 CFR §53
- Expect PM monitoring sites currently using Federal Reference Method (FRM) samplers to be replaced with continuous monitors after PM2.5 FEM monitors become available.
- US-EPA is encouraging development of particulate speciation samplers for PM10-2.5 fraction
PM2.5 Comparability Test Protocol
- 5 Test Campaigns
- 3 Winter
- 2 Summer
- Triplicate BAM-1020 and Triplicate FRM
- Minimum 23 Valid Days of Data
- 46 Valid Days for Winter/Summer Site
- Strict criteria for multiplicative (slope), additive (intercept) bias and precision
PM2.5 Comparability Test Protocol
- Only single-channel FRM samplers allowed (BGI PQ-200)
- 23-hour “day”
- Filters retrieved, equipment serviced during one-hour daily downtime
- “Days” did not start at midnight
- All protocol pre-approved by EPA
BAM-1020 PM2.5 FEM Status
- PM2.5 Designation published to Federal Register in 3/08
- EQPM-0308-170
Comparability of Candidate and FRM Methods*
50
y = 0.973x + 0.1285
45
40
35
Candidate method concentration, mg/m3
30
25
20
15
10
5
0
0
10
20
30
40
50
FRM concentration, mg/m3
Logan, UT Winter
Comparability of Candidate and FRM Methods*
45
y = 0.9404x - 0.9552
40
35
30
Candidate method concentration, mg/m3
25
20
15
10
5
0
0
10
20
30
40
50
FRM concentration, mg/m3
Allen Park, MI Winter
Comparability of Candidate and FRM Methods*
120
y = 0.9698x - 0.7541
100
80
Candidate method concentration, mg/m3
60
40
20
0
0
20
40
60
80
100
120
FRM concentration, mg/m3
Bakersfield, CA Winter/Summer
Comparability of Candidate and FRM Methods*
60
y = 1.02x + 0.5854
50
40
Candidate method concentration, mg/m3
30
20
10
0
0
10
20
30
40
50
60
FRM concentration, mg/m3
New Haven, CT - Summer
Test Summary
- All slopes/intercepts almost identical
- No geographical influence
- No seasonal influence
- Changes to BAM-1020 required to meet new designation rules are relatively modest
- No increased complexity
- No site specific calibration factors
Upgrade Path
- BAM-1020 monitors sold after 1/1/07 are in FEM PM2.5 configuration
- BAM-1020 monitors sold before 1/1/07 may be upgradeable to FEM PM2.5 configuration
- A generous trade in allowance will be offered on units more than 3-4 years old
