California Code, Public Resources Code - PRC § 4551.9

(a) On or before January 1, 2005, the board shall adopt regulations to require that a timber harvesting plan include a map or maps, depicting the location and boundaries of past, present, and reasonably foreseeable probable future projects, as defined in Section 21065 and Section 895.1 of Title 14 of the California Code of Regulations, on land owned or controlled by the applicant in the planning watershed.  The board may not require an applicant to furnish maps of projects completed more than 10 years prior to the submission of the timber harvesting plan.  Maps shall include silvicultural prescription.  The scale and format of maps provided pursuant to this subdivision shall be determined by the board.  This subdivision may not be construed to require disclosure of proprietary information to the public.

(b) The board shall consider the impact of the regulations on smaller landowners, and avoid excessive burdens or costs on those landowners.