Cal. Pub. Res. Code § 21092
(b)
(3) The notice required by this section shall be given to the last known name and address of all organizations and individuals who have previously requested notice, and shall also be given by posting the notice on the internet website of the lead agency and by at least one of the following procedures:
(d) The notice requirements of subdivision (c) apply to both of the following:
(2) The expansion of an existing facility that burns hazardous waste which would increase its permitted capacity by more than 10 percent. For purposes of this paragraph, the amount of expansion of an existing facility shall be calculated by comparing the proposed facility capacity with whichever of the following is applicable: