By Randy Ellis Staff Writer rellis@oklahoman.comNeighbors are turning up their noses at the sewage treatment plans for a proposed 40-acre mobile home park in northern Oklahoma County. "The septic system to be used at the Summerfield Mobile Home Park is not designed or appropriate for such high-density development on such a small acreage," members of the North Coltrane Community Association Inc.Read more on NewsOK.com