Cal. Food and Agricultural Code § 6047.96

(a) After the district has been formed, an owner of table grape acreage in the district may present to the board a request in writing for the exclusion of that acreage or any part of the acreage from the district upon a showing that the acreage or part of the acreage will not be benefited by the activities of the district. Factors that the board may consider in its determination for exclusion, as set forth in an affidavit from the owner of the acreage, shall include those specified in Section 6047.74. (b) After receipt of the request, the board shall cause an investigation of the parcel of acreage to be made and, if the board determines that the acreage or part of the acreage will not be benefited by the activities of the district and that exclusion of the acreage will not present a pest risk to the district, the board shall exclude the table grape acreage from the district and immediately certify this fact to the county assessor and the county auditor or tax collector. (c) Any owner of table grape acreage outside of, or otherwise not included in, the district may present to the board a request in writing for inclusion of the acreage in the district.