PERMFILE57928

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 11/2/2005
• Doc Name: Lone Pine Gulch
• Section_Exhibit Name: Exhibit 66 SAE
• Media Type: D
• Archive: Yes

2.0 RUSLE
TABLE 2-2 -SLOPE LENGTH
SAES LS
Portal 2.31
Undisturbed oakbrush 13.99
Topsoil borrow area 2.33
Undisturbed oakbrush 24.91
Develo ment waster pile 8.44
Undisturbed oakbrush 14.93
Substation 4.77
Undisturbed oakbrush 8.59
2.4 CROPPING MANAGEMENT FACTOR (C)
The cropping management factor is the ratio of soil loss from land under certain cover and management
conditions to the soil loss from tilled and bare soil (USDAb). The field visit conducted in November of
2004 characterized the surface cover. The major difference between the SAES and the adjacent
undisturbed areas is the absence of appreciable canopy. Those results along with associated C factors are
presented in Table 2-4.
TABLE 2-3 -CROPPING MANAGEMENT FACTOR
Site Description Cover That
Contacts
Ground
Surface (%) Grass Like
or Broadleaf
Like Type of Raised
Canopy C Factor
SAES
Portal 30 Grass No Cano 0.15
Topsoil borrow area 30 Grass No Canopy 0.15
Development waste pile 30 Grass No Canopy 0.15
Substation 30 Grass No Canopy 0.15

Undisturbed Oakbrush 10-20 Broadleaf Trees with no
appreciable low brush 0.28
Undisturbed Mountain
Shrub 40-50 Broadleaf Trees with no
appreciable low brush 0.13
Source: Mays 2001.
2.5 EROSION CONTROL PRACTICE (P)
The erosion control practice factor is a measure of the soil loss from any give surface condition relative to
the soil loss with uphill and downhill plowing. No erosion control practices such as contouring, terracing
or strip cropping are planned for the Lone Pine SAES; therefore, the P factor is 1.0 (Mays 2001).
210-RUSLE Rpt_Q0.18.05).doc 2-2