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trees, shrubs and flowering plants and lawn grasses will be among the newcomers. Each individual plant has specific needs for water, light, and nutrients. Many non-native plants survive only because a human has taken time to provide special care for them. Insects are prevalent wherever plants grow. New hosts,(plants) may encourage new insects. The use of pesticides to control insects may be necessary, but is always more dangerous than biological or mechanical pest control. Honey bees and other pollinating insects, valuable in the ecological re- productive cycle of plants, need to be considered. With forty-three residences it is impossible to establish any common approach to the use of pesticides. Household pets will have an effect upon the environ- ment. Fleas living on household pets are a primary cause of disease and parasite transmittal. Some diseases and parasites also affect humans. Miti- gation measures for household pets include rabies vaccinations, flea powder and flea collars. Household pets that roam freely or that occupy "the great outdoors", are likely to make contact with wild un- domesticated animals. The most likely encounters will occur with birds and rodents. Skunks and jack rabbits will be only occasional visitors. Wherever residential land abuts fare land there will be the occasional transgression of straying wildlife. Rabbits could cause a problem if they are persistent because they could eat shrubbery and young plants, and the bark of young trees. Usually they prefer open fields if they are available. Bacteria will play a large role in this development if septic tanks are to be used. The decomposition of sewage and water wastes entering septic tanks is highly dependent upon a successful bacterial culture prevalent in the septic tanks. Walnut trees in the subdivision drop their leaves in the fall and the tannin in the leaves is a growth inhibitor for other types of plant growth, especially grass. Therefore, all leaves should be raked and removed to be either disposed of at a sanitary landfill site or composted as a garden soil amendment to be added at some later date. B. Impacts Upon the Socio -Economic Setting: Aside from changes in the natural environment, most of significant impacts of a residential subdivision are a result of human planning, human design, and human use. Traffic problems are the result of design and relative location of str(,ets. There are to be 4 new streets -25_.