Cal. Code Regs. tit. 14 § 912.5
A proposed plan shall show the estimated erosion hazard rating of the plan area, by areas, down to 20 acres (8.1 ha) if such a breakdown will change the estimated erosion hazard of individual areas. The plan shall show high and extreme erosion hazard ratings, by areas, down to 10 acres if such a breakdown will change the erosion hazard of the individual areas. Specific erosion hazard areas not fitting the above minimum will be considered independently and protective measures commensurate with the problem applied. These measures are covered in Chapter 4, Subchapter 4 of Title 14, CCR.
To estimate the erosion hazard rating of any plan or portion thereof, the RPF or supervised designee shall follow the procedures and requirements contained in Board Technical Rule Addendum #1, dated February 1, 1990. Appropriate weights for the factors in the Estimated Surface Soil Erosion Hazard, Form I, in the Addendum, shall be calculated and the factors shall be summed to give the rating. A copy of the calculations from Form I shall be attached to the timber harvesting plan. A copy of the Board Technical Rule Addendum #1 can be obtained from the State Board of Forestry and Fire Protection at the State of California Resources Building, 715 P Street Sacramento, CA 95814 or P.O. Box 944246, Sacramento, CA 94244-2460.
Cal. Code Regs. Tit. 14, § 912.5
2. Repealer and new section filed 7-2-82; designated effective 1-1-83 (Register 82, No. 27).
3. Amendment filed 12-4-89; operative 2-1-90 (Register 89, No. 50).
4. Amendment filed 11-26-97; operative 1-1-98 pursuant to Public Resources Code section 4554.5 (Register 97, No. 48).
5. Change without regulatory effect amending section filed 2-17-2017 pursuant to section 100, title 1, California Code of Regulations (Register 2017, No. 7).
6. Change without regulatory effect amending second paragraph filed 10-12-2021 pursuant to section 100, title 1, California Code of Regulations (Register 2021, No. 42).
Note: Authority cited: Sections 4551 and 4562.5, Public Resources Code. Reference: Section 4562.5, Public Resources Code.
2. Repealer and new section filed 7-2-82; designated effective 1-1-83 (Register 82, No. 27).
3. Amendment filed 12-4-89; operative 2-1-90 (Register 89, No. 50).
4. Amendment filed 11-26-97; operative 1-1-98 pursuant to Public Resources Code section 4554.5 (Register 97, No. 48).
5. Change without regulatory effect amending section filed 2-17-2017 pursuant to section 100, title 1, California Code of Regulations (Register 2017, No. 7).
6. Change without regulatory effect amending second paragraph filed 10-12-2021 pursuant to section 100, title 1, California Code of Regulations (Register 2021, No. 42).