How is the service charge fee calculated?
The service charge rate is based on impervious surface area found on your property. The single family rate (Equivalent Residential Connection, ERC) will be a uniform rate. The commercial/industrial/multi-family rate is based on measure impervious area of the parcel, which is then related back to the billing rate of an ERC. The actual area assumed for a single ERC was calculated by taking 50 random residential parcels and measuring the impervious area on the parcel. The average impervious area of each of the 50 parcels was calculated to be 3,800 square feet. The impact fee rate is calculated by taking the total Impact Fee Eligible Capital Improvement costs (all the storm drainage facilities needed due to growth) divided by the number of ERCs anticipated due to growth. Growth pays for itself if the full legally defensible impact fee is levied.
