For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
APPROVED PLANS. Plans approved by the Hammond Department of Storm Water Management according to a permit and plan review which will govern all improvements made within the City of Hammond that require stormwater facilities or changes or alterations to existing stormwater facilities.
BEST MANAGEMENT PRACTICES (BMP). A technique, process, activity, or structure used to reduce the quantity of stormwater runoff, control peak runoff rates and/ or reduce the pollutant content of a stormwater discharge. BMPs include simple nonstructural methods, such as good housekeeping and preventive maintenance. BMPs may also include structural modifications, such as detention and retention facilities and infiltration and bioretention measures.
BOARD. The Hammond Department of Storm Water Management established under § 34.152 of the City of Hammond Code.
CODE. City of Hammond Municipal Code.
COUNTY REGULATED DRAIN. Part of the stormwater conveyance system under the jurisdiction of the Lake County Drainage Board, including certain ditches, tiles, and sewers.
DESIGN STORM. A rainfall event of specified size and return frequency that is used to calculate the runoff volume and peak discharge rate of a BMP.
DETENTION. The temporary storage of stormwater runoff in a basin, pond or other structures to control the peak discharge rates by holding the stormwater for a period of time and controlling the outflow.
DIRECTOR. A person appointed by the District Board of Directors to undertake the tasks and responsibilities set forth by this subchapter, who shall serve at the discretion of the District Board of Directors.
DRAIN. Any separated storm sewer, tile, ditch, stream or other stormwater conveyance channel or conduit.
EXEMPT DRAIN. Drains that are regulated by the Lake County Drainage Board.
HDSWM. Hammond Department of Storm Water Management.
IMPERVIOUS AREA. Real property that has been paved and/or covered with buildings and materials which include, but are not limited to, concrete, asphalt, rooftop, blacktop, and compacted gravel, such that the natural infiltration of water into the soil is prevented.
INFILTRATION. A process of which stormwater percolates into the ground.
LOT/PARCEL. A part or portion of land having a legal description that is formally set forth in a conveyance instrument.
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4). A conveyance or system of conveyances (including
roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains):
(1) Owned or operated by a state, city, town, borough, county, parish, district, association or other public body (created by or pursuant to state law);
(2) Designed or used for collecting or conveying stormwater;
(3) Which is not a combined sewer; and
(4) Which is not part of a publicly owned treatment works (POTW) as defined at 40 CFR 122.2.
NPDES. National Pollutant Discharge Elimination System.
NPDES PERMIT. Permit required pursuant to Section 402 of the Clean Water Act, as amended.
PEAK DISCHARGE. The maximum rate of flow of water passing a given point during or after a rainfall event.
PROPERTY CLASS CODE. A three digit land use code number generated from the Lake County Assessors Office’s used to differentiate properties use and primary purpose. For purposes of the Hammond Department of Storm Water Management user fee, this PROPERTY CLASS CODE will determine each parcels monthly user fee.
PUBLIC STORMWATER FACILITIES. The various stormwater and drainage works under the control and/or ownership of the city, county, state or federal government which may include inlets, conduits, pipes, pumping stations, manholes, structures, channels, outlets, retention or detention basins, other structural components and equipment designed to transport, move, hold or regulate stormwater.
RETENTION. The holding of stormwater runoff in a constructed basin or pond or in a natural body of water without release except by means of evaporation, infiltration or emergency bypass.
STORM SEWER. A sewer designed or intended to convey only stormwater, surface runoff, and drainage, and not intended for sanitary sewage and industrial wastes other than unpolluted cooling water. The portion of a sewer intended to carry stormwater only, which begins at the
grating or opening where water enters the sewer, through the sewer and any other conduits to the outlet structure where water enters a channel, natural watercourse or combined sewer.
STORMWATER AND STORMWATER RUNOFF. The water derived from rains falling within a tributary basin, flowing over the surface of the ground or collected in channels or conduits.
STORMWATER SYSTEM. All constructed faculties, structures and natural watercourses under the ownership, and/or control of the city and/or the TMSWMD, used for collecting and conducting stormwater to, through and from drainage areas to the point of final outlet, including, but not limited to, any and all of the following: inlets, conduits and appurtenant features, creeks, channels, catch basins, ditches, streams, culverts, retention or detention basins and pumping stations; and excluding therefrom, any part of the system of drains and watercourses under the jurisdiction of the Lake County Drainage Board or under other ownership.
STORMWATER UTILITY USER FEE. A charge imposed on users of the city’s public stormwater facilities and stormwater system.
STORMWATER UTILITY CUSTOMER/USER. The owner of a lot or parcel of land located within the City of Hammond, except for state, county, municipal and public and private schools, churches and religious institutions and all other tax exempt entities which are exempted.
SUBDIVISION GROUP. All of the parcels of land within a platted development except for state, county, municipal and public and private school parcels.
(Ord. 9262, passed 9-22-2014)