01-22-2018 Council Meeting Packet

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Watermain and Sanitary Sewer assessments for the West Shadow Lake Drive Area were analyzed on a per unit basis of parcels adjacent to the project site benefitting from the extension of sanitary sewer and watermain. The per unit assessment was calculated by dividing the cost of the watermain and sanitary sewer each by the total number of existing units and subdividable units on the project. Trunk utility costs were not included with the per-unit cost for either the sanitary sewer or watermain. Lots determined to be unbuildable, without direct access to the proposed utilities, or with no benefit provided were not included in the calculation. Existing parcels will be charged a single per-unit cost. On subdividable parcels, the per-unit cost for each additional buildable unit will be charged to the property owner at the time of subdivision / connection. The per-unit cost for subdividable parcels will be equal to the base cost plus the Engineering News Record (ENR) Construction Cost Index increase; the ENR Construction Cost Index for 2017 was approximately 5% and will vary from year to year. The analysis was based on 66 existing parcels and 7 sub-dividable parcels that would be receiving municipal utility services. The total number of lots used in the per-unit calculation was 73 (66 + 7). Actual buildable lots will be determined by the City when applications for subdivisions are submitted. The assessment calculation for the sanitary sewer is: $337,101.60 / 73 units = $4,617.83 per unit The assessment calculation for the watermain is: $706,292.40 / 73 units = $9,675.24 per unit The combined assessments per unit are as follows: $4,617.83 + $9,675.24 = $14,293.07 per unit In addition to the proposed special assessments, residents would be responsible for the following additional costs. Sanitary Sewer: City Trunk Utility Connection Fee: $2,913 per unit MCES Connection Fee: $2,485 per unit Connection from property line to house and grinder pump system Water System: City Trunk Utility Connection Fee: $3,522 per unit Connection from property line to house