The Site Classification system of productive potential of Timberland for administration of the Act and Rules thereunder is set forth in the table hereinafter:

TIMBER SITE CLASSIFICATION TABLE

Young Growth Redwood¹

Douglas fir²

Ponderosa Pine Jeffery Pine, Mixed Conifer & True Fir³

Site Class

Site Index⁴

Site Index⁴

Site Index⁴

Site Index⁵

I

feet @ 100 yrs. 180 or more

meters @ 100 yrs. 54.86 or more

feet @ 100 yrs. 194 or more

meters @ 100 yrs. 59.12 or more

feet @ 100 yrs. 114 or more

meters @ 100 yrs 35.11 or more

feet @ 300 yrs 163 or more

meters @ 300 yrs. 49.68 or more

II

155-179

47.24-54.56

164-193

49.99-58.83

93-113

28.35-34.44

138-162

42.06-49.38

III

130-154

39.62-46.94

134-163

40.84-49.68

75-92

22.86-28.04

113-137

24.44-41.76

IV

105-129

32.00-39.32

103-133

31.39-40.54

60-74

18.29-22.56

88-112

26.82-34.14

V

Less than 105

Less than 32.00

Less than 103

Less than 31.39

Less than 60

Less than 18.29

Less than 88

Less than 26.82

1 Lindquist, James L., and Marshall N. Palley. Empirical yield tables for young-growth redwood, Calif. Agri. Exp. Stn. Bull. 796, 47 pp. 1963 (Site index based on average height of Dominant trees at breast height age of 100 years). Use in young growth redwood stands in which more than 20% of the stand by basal area is redwood and when sufficient Dominant redwood trees are available to determine site index.

2 McArdle, Richard E., and Walter H. Meyer. The yield of Douglas fir in the Pacific Northwest. USDA Tech. Bull. 201, 74 pp. Rev. 1961. Adjusted to average height of Dominant trees after Forest Research Note No. 44, Pacific Northwest Forest and Range Experiment Station, by Forest Survey, Calif. Forest and Range Exp. Stn. 1948 (Site index based on average height of Dominant trees at age 100 years). Use in young growth redwood stands in which 20% or less of the stand by basal area is redwood or when sufficient Dominant redwood trees are not available to determine site index. Use also in old growth redwood stands. In such cases, measure Douglas-fir trees for determining site index. Also use for Sitka spruce, grand fir, hemlock, bishop pine, and Monterey pine stands.

3 Dunning, Duncan. A Site Classification for the mixed-conifer selection forests of the Sierra Nevada. USDA Forest Serv. Calif. Forest and Range Exp. Stn. For. Res. Note 28, 21 pp. 1942 (Site index based on average height of Dominant trees at age 100 and 300 years). Use also for lodgepole pine stands. For old growth stands use height of Dominants at age 300 years.

4 Average total height in feet and meters of Dominant trees at 100 years of age.

5 Average total height in feet and meters of Dominant trees at 300 years of age.

Note: Authority cited for Article 4 (Section 1060): Sections 4528(d) and 4551, Public Resources Code. Reference: Section 4528(b), Public Resources Code.

History

1. Editorial correction of table headings (Register 96, No. 50).

2. Change without regulatory effect amending section filed 10-31-2017 pursuant to section 100, title 1, California Code of Regulations (Register 2017, No. 44).