10-14-1999 Council Work Session - Laserfiche WebLink

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than the individual 1/2 acre lot. However, remember that the cost of providing a stormwater system for low-density development is conceptually the same as providing roads or sewers to that development - the per-unit cost is high because it takes a lot of road, a lot of sewer pipe, and a lot of storm sewer length to serve a small number of homes. While the storm sewer system proposed in the SWMP is not extensive, it constitutes approximately 55% of the infrastructure costs associated with the Plan Table 2 shows that the trunk fee for a 10-acre parcel increases substantially as the density of development increases. However, because this higher fee can be divided among substantially more units, the cost-per-lot substantially decreases as the density increases. Table 2 provides some examples of typical developments that might occur in Orono, indicating the calculated Trunk Fee that would be collected under the proposed SWMP, and showing a per-lot (or per-unit) cost comparison. Note that developable land area of each parcel for this calculation is exclusive of any area that is currently occupied by wetlands or is anticipated to be occupied by stormwater ponding. Table 2. Examples of 2 Adjusted Cosfs-per-Parcel for Typical Orono Developments Development Type Tnink Fee Tor Cost per Lot (eiampks using 10-acrc developable land area)Development 10-acrc parcel in M-6 /one developed into 30 10 X $4800 =$48,000 / 30 lots = towTihomcs at a density of 3 units per acre $48,000 Sl/>00/lot 10-acrc parcel in 1 /2 acre /one developed into 10 X $3950 =$39,500/17 lots = seventeen 1 /2 acre lots S39,5tM>52,325/lot 10-acrc parcel in 1-acre /one developed into 10 X $3525 =$35,250/8 lots = eight 1 -acre lots S35,25(»S4,400/lot 10-acrc parcel in 2-acrc /one developed into four 10 .X $2670 =$26,700 / 4 lots = 2-acrc lots 526,700 56,675/lot 10-acrc parcel in 5-acrc /one developed 10 X $2140 =$21,400/2 lots = into two 5-acre lots $21,400 SI0,700/lot Trunk fee for the development calculated using Adjusted Cost-per-Acre from Table 1. Stormwater Utility The concept of a Stormwater Utility is described in .he SWMP as a fair and equitable method to finance the operation and maintenance of existing stormwater management systems It may also provide a portion of the funding needed for solving stormwater problems in existing neighborhoods The Plan recommends that the City evaluates rates for, and then implements stormwater utility fees in the near future. The Stormwater Utility rates shown in Table 3 arc provided to establish a base of reference for future consideration - 3 -