When do the Derived (OEHHA) and the Derived (Adjusted) methods yield the same result?
When the inhalation exposure pathway is not a dominant exposure pathway, the Derived (OEHHA) and the Derived (Adjusted) methods will yield the same result. The results will only differ when the inhalation pathway is a dominant exposure pathway (see question directly above). HARP Home Page Back to Top | Contact Us | A Z Index Decisions Pending and Opportunities for Public Participation Conditions of Use | Privacy Policy How to Request Public Records The Board is one of six boards, departments, and offices under the umbrella of the California Environmental Protection Agency.