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<br />E. SM !,jr"En ANn Sf1N F'RAIJCISCO <br />Sep hpr 1 ClPf, <br /> <br />~') <br />c.... <br /> <br />1II0132CUrban lewd - Orthents, Cut and Fill complex, 0 to 5 ppl"'r,pnt ~lor)es. <br />STlThis "'lap unit is on nearly leVf~l to oflrtly slopinq coastnl tf'rracf's, <br /> <br />alluvial fars, C\nd in valle.Ys. Slopp is 0 to 5 pp.rcent. rlp'vCltion is 25 to <br /> <br />500 feet. The nVf='r?qe annual pt'E'cipHC\t.ion is about ]5 to 30 inchp.s, thp. <br /> <br />avera~p annual air temperaturp. is 54 to 58 de9rees F, and thp avpraqp. frost- <br /> <br />free period is L75 to 350 days. <br /> <br />$IOIT~is unit is 50 pprcp.nt Urban land, and 45 pprcpnt Orthents, Cut and Fill. <br /> <br />The componpnts of this unit are so intricately interminpled that it was not <br /> <br />practical to map thp~ separately at thp scalp used. <br /> <br />SIOllPCludpd in this unit are sT71C\ll areas of 80tp.lla Orthents, reclaimed <br /> <br />Sirdr?k soils, and deep alluvial soils that are loamy or finp. sandy loam <br /> <br />throughout. Also included are small arei'ls of deep, dark alluviill soils with <br /> <br />clay and clay loam texturp.s throughout and soils that have slopes qrp.a~p.r than <br /> <br />5 pp.rcent. Incluopc areas make up about 5 pprcent of the total acrea9p. <br /> <br />~JOJllrban land consists of mineral soils of varyinq depths and texturp.s that <br /> <br />are coverpd by asphalt, concrete, huildinqs, or othpr impervious material. <br /> <br />The m2tprial covered hy ~rban structurp.s consists of soils similar to the soil <br /> <br />matprial of the Ort~ents, Cut and Fill in this complp.x. <br /> <br />SIGlThe soil propp.rtips llf"!der the impervious mat~rial are hiahly vnriablp. <br /> <br />because of the diffp.rences in thf' kind and amount of thp vnrious soil and fill <br /> <br />mater;i'l if"! the profile. Runoff is rapid and the hazard of Wi'ltpr prosion is <br /> <br />slight. <br /> <br />E. X {) \' L '~5 <br /> <br />1-?3 <br /> <br />I <br /> <br />\ <br />