Cal. Government Code § 56425.5

(a) A determination of a city’s sphere of influence, in any case where that sphere of influence includes any portion of the redevelopment project area referenced in subdivision (e) of Section 33492.41 of the Health and Safety Code, shall not preclude any other local agency, as defined in Section 54951, including the redevelopment agency referenced in Section 33492.41 of the Health and Safety Code, in addition to that city, from providing facilities or services related to development to or in that portion of the redevelopment project area that, as of January 1, 2000, meets all of the following requirements: (1) Is unincorporated territory. (2) Contains at least 100 acres. (3) Is surrounded or substantially surrounded by incorporated territory. (4) Contains at least 100 acres zoned for commercial or industrial uses or is designated on the applicable county general plan for commercial or industrial uses. (b) Facilities or services related to development may be provided by other local agencies to all or any portion of the area defined in paragraphs (1) to (4), inclusive, of subdivision (a). Subdivision (a) shall apply regardless of whether the determination of the sphere of influence is made before or after January 1, 2000.