For the purpose of §§ 14-5-2-1 et seq., the following definitions shall apply unless the context clearly indicates or requires a different meaning.
AMAFCA.
The Albuquerque Metropolitan Arroyo Flood Control Authority.
BMPs. Best Management Practices. Those best management practices described within the MS4 Permit.
CHANNEL.
Any natural or constructed drainage facility, including but not limited to an arroyo, stream, swale, ditch, diversion, or water course that conveys storm runoff.
CHANNEL STABILITY.
A condition in which a channel neither degrades to the degree that structures, utilities or private property are endangered, nor aggrades to the degree that flow capacity is significantly diminished as a result of one or more storm runoff events or moves laterally to the degree that adjacent property is endangered.
CHANNEL TREATMENT MEASURE.
A physical alteration of a channel for any purpose.
CIP.
The city's Capital Improvement Program.
CITY ATTORNEY.
The chief legal counsel for the city or his or her designee.
CITY ENGINEER.
The chief administrative engineer of the Engineering Division of the Planning Department of the city or his or her designee.
CITY HYDROLOGIST.
A staff professional Engineer designated by the City Engineer to exercise primary responsibility for drainage control, flood control and erosion control matters assigned to the office of the City Engineer.
COMPREHENSIVE PLAN.
The Albuquerque/ Bernalillo County Comprehensive Plan and amendments thereto.
CONCEPTUAL GRADING AND DRAINAGE PLAN.
A plan prepared in graphical format showing existing and proposed grading, drainage control, flood control, runoff management and erosion control information in sufficient detail to determine project feasibility.
CONSTRUCTION GENERAL PERMIT. The National Pollutant Discharge Elimination System General Permit for Discharges from Construction Activities, most current version.
COOPERATOR / COOPERATIVE AGREEMENT. Any arrangement, organization, or joint functioning of the co-permittees, or in combination with other governmental agencies, which works constructively with the city to address mutual stormwater and/or stormwater quality issues.
DESIGN STORM.
A storm which deposits a specific amount of precipitation within a specified period over a defined area. Used in calculating storm runoff and in designing structural and operational measures for drainage, flood, stormwater control, and erosion control.
DEVELOPED LAND.
Any lot or parcel of land occupied by an artificial surface or by any structure intended for human occupation, including structures intended for commercial enterprise.
DEVELOPER.
Any individual, public entity, estate, trust, receiver, cooperative association, club, corporation, company, firm, partnership, joint venture, syndicate or other entity engaging in the platting, subdivision, filling, grading, paving, excavating, or construction of structures. Farming related work is exempted as is AMAFCA Operations and Maintenance.
DEVELOPMENT PROCESS MANUAL (DPM).
A compilation of city legislative requirements and administrative rules and procedures governing development activities in the Albuquerque area.
DOWNSTREAM CAPACITY.
The ability of downstream major facilities to accept and safely convey runoff generated upstream from the 100-year design storm.
DRAINAGE.
Storm drainage.
DRAINAGE CONTROL.
The treatment and/or management of surface runoff from all storms up to and including a 10-year Design Storm.
DRAINAGE MANAGEMENT PLAN.
A comprehensive drainage analysis and report which covers a large area or an entire basin or watershed. A Drainage Management Plan may include descriptions of infrastructure needed to solve existing or anticipated drainage and flood control problems and may establish allowable discharge rates and/or volumes and stormwater controls for future development within the boundaries of the plan.
DRAINAGE PLAN.
A short detailed plan prepared in graphical format with or on a detailed grading plan addressing on-site and off-site drainage control, flood control, stormwater control, and erosion control issues for a lot or parcel of less than five acres.
DRAINAGE REPORT.
A comprehensive analysis of the drainage, flood control, stormwater control, and erosion control constraints on and impacts resulting from a proposed platting, development or construction project.
DRAINAGE RIGHT-OF-WAY.
A public right-of-way acquired, whether in fee or in easement, by the city, county, AMAFCA, or the state for the primary purpose of handling storm drainage.
80TH PERCENTILE STORM EVENT. The runoff from a precipitation event that is less than or equal to 80 percent of all rainfall events. The 80th percentile storm event applies to projects where developed land is being redeveloped. The volume to be managed is stated in the Development Process Manual.
EROSION AND SEDIMENT CONTROL. Treatment measures for the prevention of damages due to soil movement and to deposition from the two-year, 24-hour design storm runoff.
EROSION AND SEDIMENT CONTROL PLAN. A plan prepared by a licensed New Mexico Professional Engineer or Certified Professional in Erosion and Sediment Control (CPESC) submitted to ensure that minimum design standards are met to reduce potential pollutants that may result from demolition and construction activities.
FARMING. Working of the soil for agricultural purposes that does not change the historic flow path or significantly change the amount of runoff from the worked area.
FLOOD CONTROL. The treatment measures necessary to protect life and property from the 100-year design storm runoff.
FLOOD HAZARD AREA.
An area subject to inundation from the 100-year design storm runoff.
FLOODWAY.
The channel of a river, arroyo or other watercourse and adjacent land areas that must be reserved in order to safely discharge the 100-year design storm runoff.
FREEBOARD.
The additional height in a drainage or flood control facility above the design water surface elevation available for storage or flow capacity.
FULLY DEVELOPED WATERSHED.
A hydrologic condition in which all areas upstream and downstream of a point in question are assumed completely developed, including any undeveloped areas which are assumed to be developed in accordance with mid-range development densities as established by the Comprehensive Plan, appropriate area plans or sector plans, adopted facilities master plans and the hydraulic and hydrologic standards established by §§ 14-5-2-1 et seq.
GI/LID, GREEN INFRASTRUCTURE (Gl), LOW IMPACT DEVELOPMENT (LID). Any array of products, technologies, and practices that preserve or use natural systems, or engineered systems that mimic natural processes and systems, to enhance overall environmental quality and more specifically that provide treatment resulting in stormwater quality improvement, as specified in the DPM.
GRADING PLAN.
A plan describing the existing topography and proposed grading, including retaining wall locations and details, interfaces with adjacent properties, streets, alleys and channels, referenced to mean sea level based on a City Bench Mark, and showing sufficient contours, spot elevations, stormwater controls, and cross-sections to allow a clear understanding by reviewers, contractors and inspectors.
GROUNDWATER CLEANUP.
The process necessary to remove contaminants, as defined by state and/or federal groundwater standards, from groundwater for the purpose of restoring the water quality of the aquifer.
LARGER COMMON PLAN OF DEVELOPMENT.
A contiguous area where multiple separate and distinct construction activities may be taking place at different times on different schedules under one plan.
MAINTENANCE.
The cleaning, shaping, grading, repair and minor replacement of drainage, flood control and erosion control facilities, but not including the cost of power consumed in the normal operation of pump stations.
MAJOR ARROYO.
Any channel whose watershed exceeds 320 acres in a 100-year design storm whether such watershed is in its natural or unaltered state or has been altered by development, runoff diversions, or detention facilities.
MANAGEMENT ON SITE. To control, direct, and treat the stormwater quality volume on the property, or if from an area of common development, then at an alternate location designed for stormwater management or as otherwise approved by the City Engineer. The control and treatment will be for water quality and/or flood volume purposes prior to discharge of the stormwater to the city's MS4. Nothing in this definition shall be construed to require an action which is contrary to state law, or to written state agency guidance regarding flood control or surface water capture, or which requires acquisition or amendment of a water right to legally implement.
MASTER PLANNED FACILITY.
Any drainage control, flood control or erosion control facility recommended in the adopted "Albuquerque Master Drainage Plan" (1981), amendments thereto, or any approved Drainage Management or Drainage Master Plan, or any voter approved general obligation bond financed drainage control, flood control or erosion control facility.
MULTIPLE USE FACILITY.
A drainage control, flood control or erosion control facility in which other secondary uses are planned or allowed, including but not limited to recreation, open space, transportation and utility location.
90TH PERCENTILE STORM EVENT. The runoff from a precipitation event that is less than or equal to 90% of all rainfall events. The 90th percentile storm event applies to new development. The volume to be managed is stated in the Development Process Manual.
NUISANCE WATERS. Those waters leaving a site and entering a public street that do not result from precipitation. Examples include landscape over-watering or car washing.
100-YEAR DESIGN STORM. That storm whose precipitation within a six-hour period and resulting runoff has a 1% chance of being equaled or exceeded in any given year.
PAYMENT-IN-LIEU FOR PUBLIC OFF-SITE MITIGATION ("PAYMENT IN LIEU"). A payment collected and used by the city, or collected by the city and distributed to a cooperator for its use pursuant to an agreement with the city, for purposes of the maintenance, retrofit, or upgrade of public drainage infrastructure for stormwater quality improvements, and made in lieu of management on-site or private off-site mitigation.
PRIVATE OFFSITE MITIGATION. Approved management of the stormwater quality volume or a portion of the stormwater quality volume at a private offsite location. The private offsite location may be an existing facility or the facility may be constructed or modified to manage the stormwater quality volume.
PRIVATE STORMWATER FACILITY. A stormwater facility on private property.
PROJECT. Any activity which disturbs or exposes the surface of the ground to erosion. Farming activities are exempt.
PUBLIC STORMWATER FACILITY. Any stormwater facility within public property, public right-of- way or a public drainage easement.
REDEVELOPMENT. Improvements made to a parcel of land that was previously developed (see "new development").
STORMWATER CONTROL MEASURE (SCM). Any Best Management Practice, or combination thereof, aimed at reducing pollutants from entering the Rio Grande.
STORMWATER CONTROL PERMIT FOR EROSION AND SEDIMENT CONTROL. A permit issued to authorize work to be performed as regulated and authorized by §§ 14-5-2-1 et seq..
STORMWATER QUALITY VOLUME. See 80th Percentile and 90th Percentile storm events.
TEMPORARY DRAINAGE FACILITY.
A nonpermanent drainage control, flood control or erosion control facility constructed as part of a phased project or to serve until such time that a permanent facility is in place, including but not limited to desilting ponds, berms, diversions, channels, detention and retention ponds, bank protection and channel stabilization measures.
10-YEAR DESIGN STORM.
That storm whose precipitation within a six-hour period and resulting runoff has a 10% chance of being equaled or exceeded in any given year.
TRAFFIC ENGINEER.
A staff Professional Engineer designated by the City Engineer to exercise primary responsibility for transportation matters assigned.
('74 Code, § 7-9-5) (Ord. 63- 1982; Am. Ord. 9-1986; Am. Ord. 89-1989; Am. Ord. 2013-016; Am. Ord. 2018-020)