By signing this document, I acknowledge receipt of the filed document and waive the requirement that I receive notice of this hearing. I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct.Notice of Acknowledgment of Receipt of Summons and Complaint. Mail your request and payment to: Riverside County Assessor-County Clerk-Recorder at P.O. Box 751, Riverside, Ca. 92502-0751. Q: What is Form RI-PR066? A: Form RI-PR066 is an Acknowledgement of Receipt and Waiver of Notice specifically used in the County of Riverside, California. Acknowledgment Of Receipt And Waiver Of Notice Form. This is a California form and can be use in Riverside Local County. Thank you for your investment in the City of Riverside.