TITLE
Using Method 301 to Validate Sampling and Analytical Methods for
Selected CAAA Compounds

AUTHOR(S)
Merrill D. Jackson, SMRB/AREAL/USEPA, RTP, NC, R. G. Merrill and J.
T. Bursey, Radian Corp., RTP, NC 

PERFORMING ORGANIZATION NAME AND ADDRESS
Radian Corporation
P. O. Box 13000 
Research Triangle Park, NC  27709


SPONSORING AGENCY NAME AND ADDRESS
Atmospheric Research and Exposure Assessment Laboratory
U.S. Environmental Protection Agency
Research Triangle Park, NC  27711

ABSTRACT
Stationary source sampling and analysis methods can be validated
for a set of analytes and stack conditions using EPA Method 301
before these methods are used to comply with the requirements of
the Clean Air Act Amendments of 1990.  Most method validations
require spiking of analytes under field conditions by gaseous
dynamic spiking into two of four sampling trains on a quadruple
probe (used with VOST), liquid spiking into two of four sampling
trains using a quadruple probe (Semi-VOST) and spiking of various
analytes onto filters.  A quadruple sampling probe with four trains
is usually used to minimize the number of sampling runs needed to
provide sufficient replicates for statistical calculations. 
Laboratory testing establishes experimental parameters such as
stability, analytical method performance, sample preparation
procedures, spiking conditions, and precision and accuracy of
analysis.  Successful laboratory testing supports a full field
validation to evaluate the applicability of a given method to a
particular analyte.