******************************* QA/QC Corner ******************************

The Quality Assurance Handbook consists of five volumes: Volume I 
(Principles), Volume II (Ambient Air Methods), Volume III (Stationary Source 
Methods), Volume IV (QA for Meteorological Measurements), Volume V
(Va - QA Manual for Precipitation Measurement Systems; Vb - Operations
and Maintenance Manual for Precipitation Measurement Systems).

EPA issued an interim revised edition of The Quality Assurance 
Handbook in 1994, and a fully revised edition is planned for 1995. The Interim 
Edition will be supplied in shrink-wrapped plastic, while the revised edition 
will be issued in three-hole binders.

---------------- Overview of Interim Edition  ------------------

Each volume will be issued as a complete unit, with out-of-date sections
either deleted or updated by an addendum sheet. (Deleted sections will be 
available by request.) Each Volume has been assigned a new EPA document 
number.

Volume Specific Changes:

Volume I	Completely revised in 1993.  45 pages 

Volume II	Manual SO2, manual NO2, SO2 by flame photometry, O3 by
		chemiluminescence, and protocol 2 gas sections deleted.
		700 pages 

Volume III	Three additional sections added for a total of 19 methods;
		12 of the methods prepared before 1983 and 15 before 1987.
		Protocol 1 gas section deleted. 2300 pages.

Volume IV	No change, 1989 edition reprinted. 279 pages.

Volume V	Volumes Va and Vb combined. 200 pages of appendices in 
		Volume Vb deleted (but available on request). 320 pages.


--------------- Overview of Revised Edition --------------------

The current page numbering system has been replaced with a standard one. 
Volume I is changed little.  Volume IV is expanded to cover equipment 
measuring meteorological parameters from 10 to 1000 meters. Other volumes 
are changed significantly:

Volume I	Volume I: A Field Guide to Environmental Quality Assurance
		(EPA /600/R-94/038a, currently available)

Volume II	Section on QA for organic compound measurement systems and 
		the automated PM-10 sampler added. Duplication across 
		sections reduced substantially. 600 pages.
		(EPA/600/R-94/038b, available in mid 1996)

Volume III	The test method as printed in the CFR (Code of Federal
		Regulations) reproduced in the QA Handbook. Approximately
 		35 methods added. Activities and equipment common to more
		than one method placed in generic sections. Information
		in the CFR not repeated in the text. Features unique to
		the test method and areas where more guidance is needed 
		than is provided in the CFR described.  Data sheets to help
		the user determine if the proper equations, units, 
		constants, and sampling parameters are being used are also 
		provided in the text. 600 pages.
		(EPA /600/R-94/038c, available mid 1995)

Volume IV	Meteorological Measurements, 
		(EPA /600/R-94/038c, available mid 1995)

Volume V	Title changed. Expanded to cover dry deposition. SOPs for 
		analytical methods/equipment calibration removed. 400 pages.
		(EPA /600/R-94/038e, available late 1995)


To obtain copies of the Interim Editions or Revised Editions, contact:

USEPA/ORD 
ORD Publications Office
Center for Environmental Research Information (CERI)
26 West Martin Luther King Drive
Cincinnati, Ohio 45268-1072
(513) 569-7562