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MWMC FACILITIES PLAN so that identification is not feasible. This unit is used mainly for urban development. It is also used for yards, parks, and open areas around and between buildings. BMF · Malabon. Malabon soils are of moderate extent in the Willamette Valley and occur dominantly on stream terraces, but are also recognized on high floodplains in some areas. Elevation is 100 to 1,100 feet. Slopes are 0 to 3 percent. The soils formed in silty and clayey alluvium from mixed materials. Areas of Malabon soils on high floodplains are subject to rare to occasional flooding for brief periods from December to March. The soil series is well-drained with slow runoff to moderately slow permeability. These soils have wide use for growing orchard, berry, vegetable, small grain, hay, pasture, and grass seed crops. Natural vegetation is Douglas fir, Oregon white oak, blackberry, Pacific poison oak, other shrubs, and grasses. · Coburg. Coburg soils are on stream terraces of the Willamette Valley at elevations of 100 to 1,100 feet. Slope gradients are dominantly 0 to 7 percent. The soils formed in silty and clayey alluvium from mixed materials. They are moderately well-drained with slow runoff and moderately slow permeability. Some areas of Coburg soils are subject to rare or occasional flooding for brief periods from December to March. An apparent water table is at its uppermost limit from December to March. These soils are used for production of small grain, hay, pasture, and grass seed crops. Natural vegetation is Douglas fir, Oregon white oak, blackberries, Pacific poison oak, other shrubs, and grasses. · Awbrig. Awbrig soils are in drainageways and nearly level to slightly concave or depress~ed parts of stream terraces at elevations of 200 to 600 feet. Slope gradients are 0 to 2 percent. The soils formed in stratified silty and clayey mixed alluvium and weathered from volcanic and sedimentary bedrock. They are poorly drained, ponded or with very slow runoff, and have a very slow permeability. Awbrig soils are subject to rare flooding. A perched water table is at its uppermost limit from November to April and is ponded from December to April. This soil also has an apparent water table. These soils are used for grass seed, hay, pasture, and spring grain crops. Native vegetation is mainly grasses, sedges, rushes, and scattered hawthorn, rose, and Oregon ash. Biocycle Farm · Ho lcomb. The Holcomb series consists of very deep, somewhat poorly drained soils in nearly level to slightly convex areas on broad valley terraces at elevations are 125 to 650 feet. They have slopes of 0 to 3 percent and formed in stratified silty and clayey mixed alluvium. They are somewhat poorly drained with slow runoff and very slow permeability. A perched water table is at its uppermost limit from November to April. This soil also has an apparent water table. Holcomb soils are under cultivation with small grains, hay, pasture, and grass seed as the principal crops. The vegetation is largely annual and perennial grasses, wild blackberry, wild rose, and oak. · Coburg, Awbrig and Malabon soils also occur at the Biocycle Farm. 2-4 MWMC_2.0_REV23.DOC