Standard Interpretations - Table of Contents|
| Standard Number:||1926.1101|
1910.1001(d)(6)(iii)(A): Replicate exposure data used to establish equivalency are collected in side-by-side field and laboratory comparisons; andIf Acme Abatement, Inc. establishes that the background air sampling apparatus you described measures the same airborne asbestos concentrations as the method prescribed in Appendix A, it must then figure out how to position the apparatuses so that they can establish that the airborne asbestos concentrations at all points outside the asbestos work area are less then 0.1 f/cm3. Simply setting several of the apparatuses on stands located just outside the asbestos work area, with their filters at approximately the height of the breathing zone, will not necessarily show that the airborne asbestos concentrations at all points outside the asbestos work area are less then 0.1 f/cm3. As an example, such positioning of the apparatuses might not detect that the asbestos concentrations outside the asbestos work area were above 0.1 f/cm3 if asbestos was escaping the asbestos work area at a concentration above 0.1 f/cm3 at a height above the breathing zone.
1910.1001(d)(6)(iii)(B): The comparison indicates that 90% of the samples collected in the range 0.5 to 2.0 times the permissible limit have an accuracy range of plus or minus 25 percent of the ORM results at a 95% confidence level as demonstrated by a statistically valid protocol; and
1910.1001(d)(6)(iii)(C): The equivalent method is documented and the results of the comparison testing are maintained.
|Standard Interpretations - Table of Contents|
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