California Code, Public Resources Code - PRC § 4593.2

(a) “Nonindustrial timberlands” means timberland owned by a nonindustrial tree farmer.

(b) “Nonindustrial tree farmer” means an owner of timberland with less than 2,500 acres who has an approved nonindustrial management plan and is not primarily engaged in the manufacture of forest products.

(c) “Uneven aged management” means the management of a specific forest, with the goal of establishing a well stocked stand of various age classes and which permits the periodic harvest of individual or small groups of trees to realize the yield and continually establish a new crop.

(d) “Sustained yield” means the yield of commercial wood that an area of commercial timberland can produce continuously at a given intensity of management consistent with required environmental protection and which is professionally planned to achieve over time a balance between growth and removal.

(e) “Nonindustrial timber management plan” means a management plan for nonindustrial timberlands with an objective of an uneven aged managed timber stand and sustained yield for each parcel or group of contiguous parcels meeting the requirements of Section 4593.3.  A nonindustrial timber management plan may include multiple nonindustrial tree farmers, but shall not cover more than 2,500 acres.

(f) “Nonindustrial timber harvest notice” means notice of timber harvest operations pursuant to an approved nonindustrial timber management plan and meeting the requirements of Section 4594.