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1 1 27 - Boca -Urban land complex no capability subclass assigned This complex consists of Boca fine sand and urban land. The Boca soil and ur- ban land are so intermingled that they cannot be seperated at the scale used for mapping. About 50 to 70 percent of the complex consists of nearly level Boca soils or Boca soils that have been reworked or reshaped, but are still recogniz- able as Boca soil. Typically, Boca soils have 14 inches of pale brown and dark grayish brown fine sand fill material over 3 inches of very dark gray ' fine sand. The next 7 inches is grayish brown fine sand. Below this to a depth of about 30 inches is 6 inches of light olive gray sandy loam. Under- lying this is a layer of hark limestone containing fractures and solution holes. 1 Twenty to 30 percent of the land is urban land in the form of houses, streets, driveways, buildings, parking lots, and other related uses. Unoccupied areas 1 are mostly lawns, vacant lots or playgrounds consisting of Boca soils. These areas are so small and intermixed with urban land that it is impractical to map them-seperately. About 15 percent of the land not covered by urban ' facilities are Chobee, EauGallie, Floridana, and Jupiter soils. A few areas with as much as 80 percent or as little as 10 percent urban land have been included. ' Areas of the soils that have been modified by grading and shaping are not as extensive in the older communities as in the newer ones. Sandy and loamy materials, as well as fragments of hard limestone and shell material from drain- age ditches or material that is hauled in, are often used to fill low areas. In undrained areas the water table is at depths of 10 to 30 inches for periods of 2 to 6 months, and within depths of 10 inches during the wet season. Drainage systems have been established in most areas, although the depth of ' the water table is dependent upon the functioning of the drainage system. ' Agricultural Uses Present land use precludes the use of this soil for cultivated crops, citrus, improved pasture, range, or forestry. ' Urbanland This complex has severe limitations for sanitary facilities, building site development, and recreational development. Water control measures are needed ' to overcome excessive wetness. Mounding may be needed for septic tank filter fields because of wetness and the shallow depth to rock. Sealing or lining of sewage lagoon areas is needed to help overcome excessive seepage. Many of these ' areas have been previously drained or modified by grading or shaping. Some water control measures, including addition of fill material and drainage to remove excess surface water after heavy rains, may be necessary for building site development. Moderate depth to the rock may cause difficulty where ' excavations are needed. The sandy surface layer should be stabilized for recreational use.