2015 LAKE HEIGHTS DR 2018-01-01 MF Import

Soil survey Snohomish County Area, Washington rn � + south- and southwest-tacing slopes. 'Nhen is slighL A seasonal perched water table is at a depth o �per. ,s are made in the canopy, invadin� Lrusiiy 18 to 36 inches from January to March. dants, if not controlled, can delay the establishment oi Urban land is areas that are covered by streets, .eedlings. Because the rootisig drpth is restricted by a buildings, parking lots, and other structures that obs„ure emented pan in lhe Alderv+ood soil, trees are subje:t to or alter the soils :� that idenlilication is not possibte. vindlhrow. The Alderwood soil in this unit is used mainly 1or The main IimitaUons of the Alderwood soil tor septic parks, building site;, lawns, gardens, and woodland. znk absorption fields and homesites are steepness o( TF e main limitations ot the Aldenvocd soil tor .lope and a seasonal �ierched water table. E((luent from homesites and septic tank absorption fields are the �bsorption fields flows lateraily ahove the pan and can depth to the hardpan and the seasonal perched water eep at the bottom nf slopes. Drainage is needed it ttible. Ons'te waste disposal systems often fail or do not �uildinQs with basements and crawl spaces are fimction properly during pe:iods oi high rainfall. Drainage �onsWcted. This soi4 sloughs readily when saturated. is needed if buildiras with basements and crawl spaces The main limi4�tions of the Everett soil for septic tank are constructed. Topsoil needs to be stockpiled during ibsorpGon fiolds are steepness o1 slope and seepage. If site preparation and subsequently used to cover tlse he density of housing is moderate to high, community e::posed material. i,dditions ot lertilizer and peat are :ewaga systems ore needed to prevent �ontamination of desirable prior to seeding grass for lawns. �ater suppiies a^. a resuit oi seepage from onsite This map unit is in capability subclass IVe. ewage disposai systems. Road cuts tand to slough eadily. 6—Alderwood-Urban land eomplex, 8 to 15 percen: To protect the soils in this unit from erosion during slopes.This map unit is on till plaiiz�. Areas are inegular »nsWction, disturbed areas need to be seeded and in shape and are 25 to 100 acras in size. The i�ative unotf should be conVolled. vegetation is mainly conifers and hardwoods. Elevation i; This map unit is in capability subclass Vlle. � 50 to 550 feet. The average annual precipitation is about 40 inches, the average annual ai�temperature is about b—Aiderwood•Urban land complex, 2 to 8 percent 50 degrees F, and the average trost-tree season is 170 dopes.7'his map unit is on GII plains. Areas are irtegular to 190 days. i shape and are 100 to 1,000 acres in size. The native This unit is about 60 percent Alderwood gr2velly sandy •er;' ''on is mainly coniters. Elr.vation is 50 to 550 (eet. loam and about 25 percent Urban land. Tho components "I t 'age annual precipitation is about 40 inches, the of this unit are so intricately intermingied that it was not iverage annual eir temperature is about 50 degrees F, � practical to map them separately at tho scale used. ind the average frost-free season is 170 to 190 days. � Included in this unit are small areas of Everett and This unit is about 60 percent Alderwood gravelly sandy Indianola soils on terraces and outwash plains, Kitsap �am and about 25 percent Urban land. The components soils on terracEs and terrace escarpments, and Ragnar �f this unit are so inUicately intermingled that it was not soils on outwash plains. Included aroas make up about �ractical to map 9hem separately at the scale used. 15 percent of the total acreage. Included in this unit are small areas of McKenna and The Alderwood soil is moderately deep and �orma soils and Terric Medisaprists in depressional moderately well drainad. It formed in glacial UII. Typically, �reas and drainac�eways on ptains. Also included are the surface layer is very dark grayish brown graveily :mall areas o( soils that sre very shallow over a sandy loam about 7 inches thick. Th3 upper part of the iardpan; small areas of Everett, Indi�nola, and Ragnar subsoil is dark yellowish brown and dark brown very :oils on teRaces and outwash plains; and soila that have gravelly sandy loam abeut 23 inches thick. The lower � stony and bouldery surlace layer, Included areas make part is olive brown very gravelly sandy loam about 5 ip about 15 percent o( the total acreage. inches thick. A weakly cemented hardpan is at a depth The Aldenvood soil is moderately deep over a hardpa� of about 35 inches. Depth to the hardpan ranges irom �nd is moderately well drained. It lormed in glacial till. 20 to 40 inches. 'ypically, the surtace layer is very dark grayish brown Permeability of the Alderwood soil is moderately rapid �ravelly sandy loam about 7 inches thick. The upper part above the hardpan and very siow throuqh it. Available �f the subsoil is dark yellowish brown and dark brown water capacity is low. Elfective rooting depth is 20 to 40 �ery gravelly sandy loam about 23 inches thick. The inches. RunoH is slow, and the hazard of water erosion �wer part is olive brown very graveliy sandy loam about � is slight. A seascnal perched water table is at a depth of � inches Ihick. A weakly cemented hardpan is at a depth 1B to 36 inches from January to March. �f aboul 35 inches. Depth to the hardpan ranges irorn Urban Sand consists of areas that are covered by !0 to 40 inches. i streets, buildings, parking lots, and other structures that Fermeability ol ihe Alderwood soil is moderalely rapid obscure or alter tha soils so that identification is not ibove the hardpan and vc•ry slow through it. Available possible. va`^� ^apacity is low. Ef(ec:�ve rooting depth is 20 l0 40 The Alderwood soil in this unil is used mainly (or r ( �uno(f is slow, and the hazard o( wa[er erosion parks, building sites, lawns, and woodland. �