TABLE 3
NI0SH METHOD 7400
PCM ENVIRONMENTAL AIR SAMPLING PROTOCOL (NON-PERSONAL)
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Sample
Minimum
Filter Pore
Min. Vol.
Sampling
Location
No. of
Size (Note 1)
(Note 2)
Rate
Samples
(Liters)
(liters/min.)
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Inside
0.5/140
0.45 microns
3850
2-16
Abatement
Square
Area
Meters
(Notes
3 & 4)
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Each Room in
0.45 microns
3850
2-16
1 Abatement
Area Less
than 140
Square meters
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Field Blank
2
0.45 microns
0
0
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Laboratory
1
0.45 microns
0
0
Blank
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Notes:
1.
Type of filter is Mixed Cellulose Ester.
2.
Ensure detection limit for PCM analysis is established at
0.005 fibers/cc.
3.
One sample shall be added for each additional 140 square meters.
(The corresponding I-P units are 5/1500 square feet).
4.
A minimum of 5 samples are to be taken per abatement area,
plus 2 field blanks.
SECTION 13280A
Page 57
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