A.
A proportionate cost of each extension of the sewerage or drainage system, including the cost of all required appurtenances thereto, shall be distributed between the Town and the abutters in an equitable manner, based on the final cost of the project, to be calculated as follows:
(1)
The final cost of the project shall be the sum of the following:
(a)
The total cost of any general benefit facilities within the improvement area, including but not limited to facilities planning for and construction of pumping stations, force mains, trunk and interceptor sewers or main drains, land acquisition and easements.
(b)
The total cost of special benefit facilities, including all eight-inch-diameter common sewers or twelve-inch-diameter drains and appurtenances thereto. For trunk and interceptor sewers of larger than eight-inch diameter or main drains of larger than twelve-inch diameter, the Superintendent shall estimate the equivalent cost of eight-inch-diameter common sewers or twelve-inch-diameter drains and shall include the estimated cost thereof in his calculation of the total cost of special benefit facilities within the improvement area. The remainder of the cost of trunk and interceptor sewers or main drains shall be proportioned as general benefit facilities costs by the Superintendent.
(2)
The assessment for an individual dwelling or business unit shall be the sum of a general benefit assessment and a special benefit assessment.
(a)
The general benefit assessment shall be calculated based on the total cost of all general benefit facilities within the general benefit area, less any state and federal aid attributable to general benefit facilities, but including any debt contracted for general benefit facilities and interest thereon, divided equally by the total number of units within the general benefit area. The general benefit assessment shall be made in lieu of payment of an entrance fee under § 175-32. The cost of general benefit facilities attributable to undeveloped land not abutting a sewered street shall not be assessed until such properties are serviced by public sewerage or drainage. The rate of assessment for general benefit facilities shall be equal to the amount of the entrance fee at the time the assessment is made, except where general benefit facilities are being installed under § 175-11A(6) whereunder the rate of assessment shall be the entrance fee plus the total cost of the general benefit facilities.
(b)
The Town Council shall determine whether it shall pay the whole or a portion or none of the cost of the special benefit facilities, and if a portion, that portion shall be in accordance with § 175-11. The proportionate cost of the special benefit facilities to be paid by the abutters shall be divided equally among the total number of units within the improvement area. The special benefit assessment shall be made on all developed and undeveloped land abutting the proposed sewers or drains. Assessments on each parcel shall be based on the maximum total number of units that could be directly served by the special benefit facilities, calculated on the basis of zoning in effect at the time of assessment.
(3)
In making assessments for sewers and drains, the Town shall use the following procedures with regard to public notice and assessment orders:
(a)
Whenever the Town Council determines that it shall pay only a portion or none of the special benefit facilities cost, the Council shall, by a majority vote, pass an order stating that betterments are to be assessed. The order of public notice shall contain a description of the improvement area by listing the names of the proposed sewered streets, a locus map and the estimated maximum amount of the general and special benefit assessments. Failure to give notice under this subsection shall not affect the Council's authority to make assessments at a later date.
(b)
After the sewerage or drainage work is completed, the Superintendent shall calculate the rates of assessment in accordance with this chapter. A majority vote of the Town Council shall be required to make an order of assessment. The order of assessment shall contain the name of each owner and the amount of the general and special benefit assessments on each parcel, as well as a reference to the book and page where the deed for each parcel is recorded.
B.
The Council Clerk shall record public notice and assessment orders in the Hampden County Registry of Deeds within 30 days after adoption of the orders.