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In addition to regulatory requirements, Holly Springs is facing issues of aging infrastructure or inadequate drainage systems in many areas throughout the City. The adoption of the Stormwater Utility is a display of the City’s commitment to improving its drainage infrastructure throughout the city in order to benefit all citizens as well as our natural resources.
Single-Family Residential FeeAll single-family residential homes, duplexes, and townhomes within the city limits of Holly Springs are charged a flat fee of $4.00 per month. This is due to the fact that the impact on our watersheds and waterways is relatively similar for all residential properties. Statistical sampling and analysis conducted in 2009 determined that the average amount of impervious surface on a residential lot in the City is 2,700 square feet. This number is known as the Equivalent Residential Unit (ERU), which is the basis for the stormwater service fee on all properties in the City. Single-family residential, duplex, and townhome properties all have an ERU of 1.0 and the billing rate is $4.00 per ERU per month.
Non-Residential FeeThe stormwater service fee for non-residential properties is based on the amount of impervious surface located on each property. The amount of impervious area for each non-residential parcel in the City was calculated using aerial photography and GIS data. For each parcel, the total impervious area (sq. ft.) is divided by 2,700 to determine the number of ERUs for that particular parcel. For example, if a commercial property has 10,000 square feet of impervious area the formula for calculating the monthly bill would be 10,000/2,700 = 3.7 ERUs & 3.7 x $4.00/ERU = $14.80 per month. Therefore a non-residential property with 10,000 square feet of impervious surface would pay a stormwater service fee of $14.80 per month.
Inspection and engineering assessments of privately-owned stormwater management ponds and conveyances and storm sewers, culverts and ditches located inside of the street right-of-way
The opportunity for property owners to apply for the City to maintain privately-owned stormwater management features that control or convey runoff originating from public property or right-of-way
Enhanced development plan review and enforcement for grading, stormwater runoff, water quality and environmental protection
Public education and outreach activities at schools, businesses and civic organizations
Detailed stormwater infrastructure inventory and mapping updates
Field monitoring, water quality sampling and enhanced code enforcement—illicit discharge detection, citations and abatement
Planning and design of regional facilities designed for flood control and water quality improvement
Construction site inspection of stormwater facilities before acceptance into the County’s inventoryIn addition, developers of new commercial, industrial, institutional and residential property will continue to add to the City’s stormwater management system either by building on-site stormwater management ponds and conveyances that serve their new developments and/or by funding the construction of regional stormwater management facilities.
The NPDES regulations require that these same activities be continued and intensified, plus work is conducted in these new areas:
Targeted public education and participation
Construction of regional water quality and quantity control structures
Computer aided storm sewer system mapping
Routine pond and outfall inspections and maintenance
Detection and elimination of illegal discharges to the storm sewer system
Development and enforcement of erosion control and illicit discharge ordinances
Pollution prevention activities
Verification of response to citizen inquiries, violations reports, and complaints
Enhanced record-keeping and report preparation
Watershed based stormwater management planning
b) Parcels with impervious area from the public transportation network (roads, sidewalks, etc.) are not charged a fee. The stormwater management costs associated with impacts from public transportation networks are apportioned to all customers as part of the Stormwater Utility Fee due to the universal benefit that customers derive from them. In addition, public transportation networks are directly responsible for stormwater management of their rights–of-way and assume the costs associated with those responsibilities.