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Secondary Standards except Minnesota has a more stringent stan <br />dard for sulfur dioxide than the Federal Standards. <br />The number of automobiles visiting the Airport relative to the <br />number in the community and surrounding area will continue to be <br />very small. When compared to vehicle activity in the industrial <br />park and residential areas, the airport's contribution is almost <br />insignificant. <br />Air pollution caused by aviation has been the subject of numerous <br />studies. The pollutants of aircraft engines, both piston and <br />turbine, are the same as those of automobile emissions, that is <br />carbon monoxide, nitrogen oxides, sulphur dioxide, particulates, <br />hydrocarbons, and carbon dioxide. On a nationwide basis, <br />pollutants emitted from general aviation aircraft constitute less <br />than one percent of the total quantities emitted by all sources. <br />No significant impacts are anticipated with the proposed <br />improvements. <br />Airport Construction <br />A temporary source of pollution will be construction equipment <br />and construction -related storage of materials. Dust and <br />spraying, fuel spills, and equipment emissions would be potential <br />sources of pollution. <br />Due to the location of the airport, there will be limited effects <br />on the area's air quality during the construction phase, and <br />these are expected to be a temporary concern. Minimum suggested <br />abatement strategies during the construction period are outlined <br />in Appendix B. <br />2.9 SOCIAL IMPACTS <br />The major social impacts to be considered are those associated <br />with the acquisition and relocation program of the proposed <br />improvement. In addition, a segment of Industrial Boulevard <br />(CSAH 116) will need to be relocated to provide adequate approach <br />clearances. <br />Due to the number of residents potentially affected and the <br />number of parcels involved, the City contracted with a relocation <br />specialist to assist with the preliminary evaluation and develop- <br />ment of a relocation plan (Appendix C). Approximately 230 acres <br />of land is recommended to be purchased including 19 homes and two <br />commercial establishments. Figure 2-12 illustrates the proposed <br />acquisition program. Table 2-5 indicates the owners and sizes of <br />each parcel. Approximately half of the homes to be purchased are <br />less than 10 years old. The relocation plan also identified six <br />business operations which may be affected by acquisition. These <br />include a drywall contracting business run out of a homestead <br />parcel, two residents who have offices in their homes, and three <br />absentee landlords who rent residential housing units. <br />2-28 <br />