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<br />~9 <br /> <br />'1D" <br />~ <br /> <br />f. ~ft~ ~ATEO AND SA~ FR~NCISCr <br />5pptr "er 19R6 <br /> <br />~T1("llnRrRotella - Urha~ lanc1 cOlT1plex, 0 to 5 perr.pnt: 5lopes. S,TlThis map lIrit <br />is en "~arly level afld gently sloping alluviol fnr,s, old flood plains C1nrl. <br /> <br />stream terraces. It formed formed in alluvium from nlixed sourcp~. SlopF'is <br /> <br />G to 5 percent. The native vegetation is mainly ar:f111Cll ~raSSF'5, forbs, ard <br /> <br />scatter~d oaks. Elevation is 5 to 400 fppt. The avera~e annual prp~ipitation <br /> <br />is about 15 to ?5 inches, the avernge annual air temperaturp. is 56 to 5? de- <br /> <br />grees f, and the average frost-free period is 275 to 330 days. <br /> <br />SIOIThis ur1t is 45 percent Botella clay loam and 30 percent Urban land. Thr <br /> <br />componen't~ of this unit are so intricatply intermingled that it ...Ias net <br /> <br />practical to map them separatply at the scale used. <br /> <br />SIOII~cluded in this unit are small areas of Orthents, Cut a~d Fill, soils <br /> <br />that have slopes !=lrpnter then 5 percpnt or that have loafT: or gravelly loam <br /> <br />textures throughout. Also included (Ire small arei'ls of s('i1~ ~irrilar to this <br /> <br />Botella soil that have clayey subsoils. I~cluc1p.d arpClS make up about ?5 per- <br /> <br />cent of the total 2cr~age. <br /> <br />The Botella soil is very deep and well drained. It femed in allllviurr frof11 <br /> <br />mixed sources. Typically, the surface layer is dark 9rClyish brown clay loarr. <br />about 6 inches thick. The upper 11 inches of t.he subsoil is rark gri'lyish <br /> <br />brown clay loam. The lower part to a depth of more than ~O inchps or more is <br /> <br />brown clay lOtlm. <br /> <br />SIOlPenneability rf the Botelia soil is moderately ~1Gw. AvailC\tllf' watpr <br /> <br />tapacity is hiqh to very high. Effective rootin9 depth 1$ F0 ;r.chp.s or morF'. <br /> <br />Runoff is slow, and the hazard of water erosion is slight. <br /> <br />E X B tiN "- 2. <br /> <br />IV-ll <br />