[Code of Federal Regulations]
[Title 40, Volume 30]
[Revised as of July 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR761.253]

[Page 710]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 761_POLYCHLORINATED BIPHENYLS (PCBs) MANUFACTURING, PROCESSING, 
DISTRIBUTION IN COMMERCE, AND USE PROHIBITIONS--Table of Contents
 
Subpart M_Determining a PCB Concentration for Purposes of Abandonment or 
  Disposal of Natural Gas Pipeline: Selecting Sample Sites, Collecting 
        Surface Samples, and Analyzing Standard PCB Wipe Samples
 
Sec.  761.253  Chemical analysis.

    (a) Extract PCBs from the standard wipe sample collection medium and 
clean-up the extracted PCBs in accordance with either Method 3500B/3540C 
or Method 3500B/3550B from EPA's SW-846, Test Methods for Evaluating 
Solid Waste, or a method validated under subpart Q of this part. Use 
Method 8082 from SW-846, or a method validated under subpart Q of this 
part, to analyze these extracts for PCBs.
    (b) Report all PCB sample concentrations in [micro]g/100 cm\2\ (16 
square inches) of surface sampled. If sampling an area smaller than 100 
cm\2\, report converted sample concentrations in accordance with Sec.  
761.243(b).