Question 180: Does the word "also" as used in 20.1202 (c)
mean intake by oral ingestion and inhalation, or oral
ingestion and external exposure?
Answer: In 10 CFR 20.1202 (c), the words ". . . also
receives an intake by oral ingestion . . ." mean in
addition to the ingestion associated with inhalation, as
discussed in 10 CFR 20.1202 (b). All intakes by oral
ingestion in excess of 10 percent of the applicable ALI
must be accounted for, whether the dose from oral ingestion
is in conjunction with intakes by inhalation, external
doses, or both. (Reference: 10 CFR 20.1202, Regulatory
Guide 8.34)