; and (2) apply the extraordinary circumstances procedures under section 220.6 of title 36, Code of Federal Regulations (or a successor regulation), in determining whether to use the categorical exclusion. 333. Categorical exclusion to meet forest plan goals for early seral and early successional forests (a) Availability of categorical exclusion A categorical exclusion is available to the Secretary to develop and carry out a forest management activity on National Forest System land in any case in which the primary purpose of the forest management activity is modifying, improving, enhancing, or creating an early seral or early successional forest, in accordance with the applicable forest plan. (b) Acreage limitations A forest management activity covered by the categorical exclusion granted by subsection (a) may not contain harvest units exceeding a total of 6,000 acres. (c) Extraordinary circumstances The Secretary may apply the extraordinary circumstances procedures under section 220.6 of title 36, Code of Federal Regulations (or a successor regulation), in determining whether to use a categorical exclusion under subsection (a). (d) Consistency In carrying out forest management activities using the categorical exclusions under subsection (a), the Secretary shall ensure that the forest management activities are consistent with the applicable forest plans. (e) Cumulative impacts The Secretary shall not be required to conduct a cumulative impact analysis in an environmental document prepared under the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq.) for a forest management activity carried out using a categorical exclusion made available to the Secretary under subsection (a) or any other provision of law (including regulations). 334. Categorical exclusion to improve wildlife habitats (a) Availability of categorical exclusion A categorical exclusion is available to the Secretary to conduct a forest management activity the purpose of which is the improvement of wildlife habitat. (b) Acreage