The U.S. Army Corps of Engineers, NED, in cooperation with several agencies under the administration of the Technical Subcommittee on Boston Harbor, is directing a segment of the Wastewater Management Study for Eastern Massachusetts which proposed the utilization of land application methods to further treat and make use of conventionally treated wastewaters. The entire wastewater management study for Eastern Massachusetts consisted of five alternatives. Four of the conceptual alternatives are being prepared under the direction of the Metropolitan District Commission (MDC). The land application alternative is labeled Concept 5 and provides land application treatment for effluents from five of the regional waste treatment plant locations described in Concept 4. The report presented herein constitutes the land-oriented treatment system known as Concept 5.