(a) Development of proposed alternate solutions to the problem of providing for the present and future collection, treatment and disposal of sewage within the study area taking into account established receiving waters classifications.

(b) Each such proposed solution shall be accompanied by basic information and data not limited to, but including: reliable estimates of existing and future sewage flows; estimate of the effect of the proposed sewage effluent discharge on the receiving waters; justifiable estimates of existing and future population of the area projected for at least five decades in the future; justifiable estimates of the volume, type, character and strength of industrial wastes or other wastes that will be permitted to connect to the proposed municipal sewerage system based on consideration of existing industries within the area and possible or proposed new industries to be located within the area, if known: a basic plan showing the location, size and capacity of proposed intercepting sewers, main trunk sewers, subtrunk sewers, pumping stations, force mains, proposed location and size of sewage treatment plant site, preliminary lay-out plan showing location, type, size and capacity of proposed treatment plant structures and effluent outfall; and a description accompanied by adequate illustrations to show how the sewage collection and treatment facilities may be economically altered or enlarged to serve future area and additional populations.

(c) For each proposed solution developed as a result of the comprehensive study of the problem of providing for the collection, treatment and disposal of sewage and wastes within the study area: an estimate of the capital cost of construction, including costs for land acquisition and rights-of-way, engineering, legal and other services; an outline of the proposed method for financing; an estimate of the annual cost for maintenance and operation of the proposed facilities.

(d) The engineer's recommendation as to the best and most economical solution for the collection, treatment and disposal of sewage and wastes within the area accompanied by: an estimate of the annual costs for amortization of indebtedness which would be required to finance construction of the project.

(e) The financial analysis shall be in sufficient detail to enable the applicant to develop an adequate plan for financing.