California Code, Public Utilities Code - PUC § 33002.9

(a) Any owner or owners of real property, which is, in whole or in part, within the benefit district, or their legal representatives, may jointly or severally file with the board a petition requesting that the real property owned by them or for which they are the legal representative be excluded from the benefit district on the ground that the real property sought to be excluded is not benefited or that the assessment be reduced on the ground that the assessment exceeds the benefit to that real property.

(b) The real property sought to be excluded or upon which the assessment is sought to be reduced shall be described by its legal description and shall be accompanied by a map depicting its location in relation to the benefit district.

(c) The petition shall contain a statement of facts in support of the petition and shall be acknowledged by the owner or the legal representative filing the petition.