Cal. Gov. Code § 70658.5

If a petition or application, or opposition to a petition or application, described in Sections 70650 to 70656, inclusive, or Sections 70657.5 to 70658, inclusive, is filed combining requests for relief or opposition to relief that could have been stated in separate petitions or applications, or objections or other opposition, only one filing fee shall be charged under this article. If a filing combines petitions, applications, or objections, or other opposition to a petition or application, that would be subject to different filing fees under this article, the higher of the applicable filing fees shall be charged.