[Code of Federal Regulations]
[Title 43, Volume 1]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 43CFR11.37]

[Page 256]
 
                    TITLE 43--PUBLIC LANDS: INTERIOR
 
PART 11--NATURAL RESOURCE DAMAGE ASSESSMENTS--Table of Contents
 
                    Subpart C--Assessment Plan Phase
 
Sec. 11.37  Must the authorized official confirm exposure before implementing the Assessment Plan?

    (a) Before including any type B methodologies in the Assessment 
Plan, the authorized official must confirm that at least one of the 
natural resources identified as potentially injured in the preassessment 
screen has in fact been exposed to the released substance.
    (b) Procedures. (1) Whenever possible, exposure shall be confirmed 
by using existing data, such as those collected for response actions by 
the OSC, or other available studies or surveys of the assessment area.
    (2) Where sampling has been done before the completion of the 
preassessment screen, chemical analyses of such samples may be performed 
to confirm that exposure has occurred. Such analyses shall be limited to 
the number and type required for confirmation of exposure.
    (3) Where existing data are unavailable or insufficient to confirm 
exposure, one or more of the analytical methodologies provided in the 
Injury Determination phase may be used. The collection and analysis of 
new data shall be limited to that necessary to confirm exposure and 
shall not include testing for baseline levels or for injury, as those 
phrases are used in this part.

[51 FR 27725, Aug. 1, 1986. Redesignated and amended at 61 FR 20610, 
20611, May 7, 1996]