Subpart UU. Injection of Carbon Dioxide BreadcrumbsFAQs, Rule Subparts ChangedLast updated: 2 weeks ago [all: true][depth: 2]Q666. How does EPA define "identification of the facility or supplier" in 98.4( i )(1) with regard to a facility's certificate of representation?Q669. How should the "physical street address" be reported for Subpart UU facilities that don't have a physical street address?