Matrix

Method

Collection Media

Recommended Volume

Detection Limit

Blanks

Clearance Level

(not yet available)

Comments

Air

40 CFR Part 763 (AHERA)

25 mm MCE filter with pore size <0.45 microns

> 1200 liters

0.005 s/cc

Unsampled cassette. 2 per set of 10

-if less than 1200 liters are collected, the screening for clearance cannot be used (mean < 70s/mm²). The laboratory may also inquire as to the need for 0.005 analytical sensitivity

-method is based on a sample set (collected on required media) which includes 5 inside and 5 outside samples, with 3 blanks. Report will contain a disclaimer for samples submitted otherwise

Air

D 6281-98

25 to 50 mm cassette with pore size 0.45 micron

pending desired analytical sensitivity

calculated airborne structure concentration equivalent to 2.99 structures counted in the analysis

Unsampled cassette

-analysis reports fibers > .5 microns

-this method is used primarily as an alternative to AHERA. Applicability to regulatory limits should be determined prior to use

Air

NIOSH 7402

.45 Cellulose ester membrane, 25mm; conductive cowl on cassette

400 – 1800 liters @ flow rate 2-10 L/min

one confirmed fiber > 95% of mean blank value

Unsampled cassette.

2 to 10 per set

method is used to determine asbestos fibers in the optically visible range and is intended to complement the results obtained by PCM (NIOSH 7400)

Dust

D 5755-95

25 mm or 37 mm MCE with pore size < 0.8 microns with plastic tubing cut at a 45⁰ angle

100 cm² with a minimum of 2 min. sampling time

4 structures per TEM analysis

Unsampled cassette. 1 per sample set

there are currently no clearance guidance levels for data from this analysis. available are suggested guidelines only.

Dust on Wipe

D 6480-99

particle free, sealed edge continuous filament cloth. ‘clean room wiper’

typically 100 cm² , using a template

2.99 X calculated asbestos structures/cm²

Unsampled wipe

-template size can vary. results will be reported in asbestos structures/ cm²

Water

EPA 100.2 (and 100.1)

1 liter polyethylene or glass container. sample containers should be analyzed for background level (blank determination) prior to sample collection.

should be collected in duplicate. 800 mls in 1 liter bottles and stored in the dark at 4⁰ C. sample are to be shipped in order to be filtered at the laboratory within 48 hrs.

0.2 MFL (million fibers per liter)

-blank checks should be performed prior to sample collection.

-polyethylene bottles- one bottle from each batch or minimum of one from each 24

-glass bottles – four bottles from each 24.

-additional blanks may be desirable if low levels are suspected.

- method 100.2 counts fibers > 10 microns only

-100.2 is typically used for drinking water analysis

-100.1 is typically used for waste water analysis

-acceptable blank levels are < 0.01 MFL >10 microns in length

-time of collection should be recorded on the chain of custody as holding times effect the analysis. (see collection media column)

-information should be supplied to indicate if the samples come from bulk storage supply of from a distribution system (if collected in California).

-composting must be done in the laboratory, not the field.

Bulk

New York State ELAP 198.4 and Chatfield Method

N/A

> 1 gm

1%

N/A

-This method is intended for use in identifying and quantitating asbestos in non –friable organically bound (NOB) bulk materials. Use of this method for sample types other than NOB can produce results that may not provide the analytical reliability for which the method was intended.

Bulk

EPA/600/R-93/116

N/A

1 cubic inch for materials such as floor tiles.

1%

N/A