Cal. Health and Safety Code § 25201.6.1

The department shall seek a determination from the United States Environmental Protection Agency as to the conditions, if any, under which the department may authorize a storage facility that is authorized under Section 25201.6 to transfer bulk liquids to and from railcars, to store railcars holding a residual heel from prior loads of RCRA hazardous waste in excess of 10 days without obtaining a RCRA-equivalent hazardous waste facility permit. Upon receipt of a written determination from the United States Environmental Protection Agency, the department shall initiate whatever administrative actions are necessary to enable the department to authorize this activity, subject to any regulatory or permit conditions that are required by the United States Environmental Protection Agency or are determined to be necessary by the department. Those administrative actions may include, but are not limited to, one or more of the following, as determined necessary: (a) Adopting regulations. (b) Processing permit modification requests. (c) Seeking authorization from the United States Environmental Protection Agency to allow the department to authorize this activity.