For the purpose of this Article 4, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
(A) BASE BILLING UNIT (BBU). An area of measured impervious area surface following the convention 1 to 1,000 square feet of measured IA is assigned one BBU; 1,001 to 2,000 square feet of measured IA is assigned two BBUs; 2,001 to 3,000 square feet of measured IA is assigned three BBUs and progressing in a manner such that each additional 1,000 square foot unit of IA is assigned an additional BBU.
(B) BOARD. The Board of Directors of the Department of Storm Water Management established under § 1-1-3-14 of this code.
(C) CREDIT. A reduction in a storm water user fee based on certain qualifying conditions or activities that benefit the storm water system, increase green infrastructure and/or aid the department in the outreach and education compliance and reporting requirements of the National Pollutant Discharge Elimination System (NPDES) discharge permit.
(D) DEPARTMENT. The Department of Storm Water Management established under § 1-1-3-14 of this code, acting by and through the Department of Public Works of the City. The department is granted authority to plan, budget, design, finance and construct storm water systems in and serving the district.
(E) DISTRICT. The Lawrence Storm Water Management District authorized by I.C. 8-1.5-5 and created under § 1-1-3-14 of this code.
(F) GREEN INFRASTRUCTURE PRACTICES (GI). Approved structural best management practices that implement infiltration as the primary method of management and treatment of storm water and storm water runoff and have restricted or no positive discharge to the storm water system.
(G) IMPERVIOUS AREA (IA). An area that has been paved and/or covered with buildings and materials that include, but are not limited to, concrete, asphalt, rooftop and blacktop, such that the infiltration of storm water into the soil is prevented or impeded. IMPERVIOUS AREA shall include gravel driveways, private roadways, parking lots and similar areas designed or used for vehicular traffic. Excluded from this definition are undisturbed land, lawns and fields and undisturbed and tilled agricultural lands and areas.
(H) INFILTRATION. The process of allowing runoff to penetrate the ground surface and flow through the upper soil surface.
(I) NONRESIDENTIAL PROPERTY. All properties not included within the definition of residential property in this article. NONRESIDENTIAL PROPERTY shall include, but not be limited to, the following:
(1) Agricultural property;
(2) Apartment and condominium common property;
(3) Mobile home parks;
(4) Commercial property;
(5) Industrial property;
(6) Churches;
(7) Schools;
(8) Federal, state and local government property.
(J) PUBLIC STREETS, ROADS AND HIGHWAYS. Those streets, roads and highways that are accepted for maintenance by the State of Indiana, the City of Lawrence or any other municipality and that are available for use in common by the general public for motor vehicle transportation.
(K) RESIDENTIAL PROPERTY. An improved lot or parcel of real estate on which a building or mobile home is situated, which building or mobile home contains a group of rooms forming a single dwelling unit with facilities that are used or are intended to be used primarily for living, sleeping, cooking and eating. This definition also includes an individual lot or parcel containing one individual building containing three or fewer separate or attached single-family dwelling units.
(L) SQUARE FOOTAGE OF IMPERVIOUS AREA. For purposes of assigning an appropriate number of BBUs, shall be calculated using the outside boundary dimensions of the impervious area and shall include all of the total enclosed square footage, without regard to topographic features of the enclosed surface.
(M) STORM WATER CREDIT MANUAL. The manual designated by the department and approved by the Board that shall set forth the details of the credit system, including parameters of credit and application procedures.
(N) STORM WATER SPECIFICATION MANUAL. The Storm Water Design and Construction Specification Manual as designated by the department and approved by the Board.
(O) STORM WATER USER FEE. The service charge or user fee authorized by I.C. 8-1.5-5 and imposed on the users of the Lawrence Storm Water Management District's storm water system.
(P) STORM WATER SYSTEM. All facilities, including structures and natural water courses under the ownership and/or subject to the control of the City of Lawrence Department of Public Works used for collecting and conducting storm water to, through and from drainage areas to the point of final outlet, including, but not limited to the following: inlets, conduits and appurtenant features, pipes, pumping stations, manholes, structures, channels, outlets, creeks, catch basins, ditches, streams, culverts, retention or detention basins and other structural components and equipment designed to transport, move or regulate storm water. STORM WATER SYSTEM shall include public streets, roads and highways.
(Ord. 16, 2020, passed 12-7-2020)