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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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bam 1020 pm 2 5 federal equivalent method monitor

BAM-1020 PM2.5 Federal Equivalent Method Monitor

David Gobeli, Ph.D.

April 11, 2008

update 4 08
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
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
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
pm 2 5 comparability test protocol
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
pm 2 5 comparability test protocol6
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
slide7

New Haven CT

Allen Park MI

Logan UT

Bakersfield CA

bam 1020 pm 2 5 fem status
BAM-1020 PM2.5 FEM Status
  • PM2.5 Designation published to Federal Register in 3/08
  • EQPM-0308-170
logan ut winter

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
allen park mi 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
bakersfield ca winter summer

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
new haven ct 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
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
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