[Ord. No. 4438, 2-19-2018]
For the purposes of this Chapter, the following definitions shall apply in the interpretation and enforcement thereof:
ADVERSE IMPACTA negative impact on land, water and associated resources resulting from a land disturbing activity. The negative impact includes increased risk of flooding, degradation of water quality, increased off-site sedimentation, reduced ground water recharge, adverse effects on aquatic organisms, wildlife and other resources and threats to public health.
APPLICANTThe person responsible for the land disturbing activity who executes the necessary forms to obtain approval or a permit for a land disturbing activity subject to this Chapter.
BEST MANAGEMENT PRACTICES or BMPManagement procedures, schedules of activities, prohibitions on practices, specific controls and other management practices which have been demonstrated to effectively control the quality and/or quantity of stormwater runoff and which are compatible with the planned land use.
CEASEDAny number of deliberate actions taken by the developer, contractor, operator or other responsible party that, taken together, reasonably indicate a site is no longer active, including, but not limited to, removal of equipment and machinery or failure to maintain perimeter erosion prevention/sediment controls.
CLEARINGThe indiscriminate removal of trees, vegetation, shrubs and/or undergrowth from a site with the intent to prepare real property for non-agricultural use, but shall not include grubbing, scalping and other significant soil disturbance. In addition, clearing shall not include the selective removal of non-native trees or diseased or dead trees or normal moving operations.
CONTRACTORA person who contracts with the owner, developer or another contractor to undertake any or all the land disturbing activities covered by this Chapter. This definition encompasses subcontractors.
DEBRIS OR SILTING BASINA barrier or dam built across a waterway, excluding waters of the State or at other suitable locations to retain rock, sand, gravel, silt or other materials.
DEFAULTA finding or declaration by the Public Works Director that the applicant or other responsible party has not completed the improvements or repairs within the specified time and the potential for harm, inconvenience or annoyance to others exists. These findings may be made if required temporary or permanent improvements or control measures have not been installed or maintained properly; the required vegetation and restoration of a site have not been completed as required; or damages to streets, curbs, sidewalks, trees, landscaping or any public facilities have occurred and repairs have not been completed as required.
DETENTION FACILITYPermanent stormwater management structure whose primary purpose is to temporarily store stormwater runoff and release the stored runoff at controlled rates.
DEVELOPERA person undertaking, or for whose benefit, any or all the activities covered by this Chapter are commenced or carried out.
DIVERSIONA channel with or without a supporting ridge on the lower side constructed across or at the bottom of a slope.
DRAINAGE WAYAny channel that conveys surface runoff through a site.
EPAEnvironmental Protection Agency.
EROSIONThe wearing away of the land surface by the action of wind, water, gravity or any combination of those forces.
EROSION AND SEDIMENT CONTROLThe control of solid material, both mineral and organic, during a land disturbing activity to prevent its transport out of the disturbed area by means of air, water, gravity or ice.
EXCAVATION or CUTThe removal, stripping or disturbance of soil, earth, sand, rock, gravel or other similar substances from the ground.
EXEMPTIONSThose land disturbing activities that are not subject to the sediment and stormwater requirements contained in these regulations.
EXISTING GRADEThe vertical location of the existing ground surface prior to excavation or filling.
FILL or FILLINGThe placing of any soil, earth, sand, rock, gravel or other substance on the ground.
FINISHED GRADEThe final grade or elevation of the ground surface conforming to the proposed design.
GRADINGAny excavation or filling, or combination thereof.
GROUNDIt shall include, but shall not be limited to, the banks and beds of any river or waterway.
ILLICIT DISCHARGEAny discharge to an MS4 that is not composed entirely of stormwater with some exceptions as listed herein.
INFILTRATIONThe passage or movement of water through the soil profile.
INSPECTORA person who, under the direction of the Public Works Director or designee, reviews any land disturbing activity for compliance with this Chapter and any duly issued Site Disturbance Permit.
LAND DISTURBING ACTIVITYAll construction, reconstruction, modification, extension or expansion of buildings or structures or parking areas, placement of fill, dumping, storage of materials, land excavation, land clearing, clear-cutting, tree and vegetation removal, grubbing, bush hogging or any similar activity or combination thereof. This definition includes all land disturbing activity undertaken as part of a larger, common plan of development or sale.
LICENSED ENGINEERA person registered as a professional engineer in the State of Missouri by the Missouri Board of Architects, Professional Engineers and Land Surveyors.
MDNRMissouri Department of Natural Resources.
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4)A conveyance or system of conveyances (including roads with drainage systems and municipal streets) that is owned or operated by the City of Berkeley or the St. Louis Metropolitan Sewer District and is designed or used for collecting or conveying stormwater and which is not a combined sewer and which is not part of a publicly owned treatment works.
OWNERA person, firm or governmental agency holding legal title or in possession or control of the land who indirectly or directly allows the land disturbing activity or benefits from it.
PERIMETER CONTROLA barrier that prevents sediment from leaving a site by filtering sediment-laden runoff or diverting it to a sediment trap or basin.
PERMANENT REVEGETATIONThe establishment of an average of seventy percent (70%) permanent vegetative cover per sampling of one (1) square inch of seeded areas.
PERSONAny individual, firm, partnership, joint venture, association, club, fraternal organization, corporation, estate, trust, receiver, organization, syndicate, City, County, municipality, district or other political subdivision or any other group or combination acting as a unit and any agency or instrumentality thereof.
PERSON RESPONSIBLE FOR THE LAND DISTURBING ACTIVITYThe person holding legal title to the land upon which the land disturbing activity will take place; the person in possession or control of the land or who directly allows the land disturbing activity or benefits from it; or any other person, including, but not limited to, a developer or contractor, who has or represents having financial or operational control over the land disturbing activity.
PHASINGClearing a parcel of land in distinct phases, with the stabilization of each phase substantially completed before the clearing of the next.
POST-DEVELOPMENTThe conditions which exist following the completion of the land disturbing activity in terms of topography, vegetation, land use and rate, volume or direction of stormwater runoff.
PRE-DEVELOPMENTThe conditions which existed prior to the initiation of the land disturbing activity in terms of topography, vegetation, land use and rate, volume or direction of stormwater runoff.
PUBLIC WORKS DIRECTORThe Public Works Director for the City or the Public Works Director's authorized designee.
RETENTION FACILITYPermanent stormwater management structure whose primary purpose is to permanently store a given volume of stormwater runoff. Release of the given volume is by infiltration and/or evaporation.
RUNOFF COEFFICIENTThe fraction of total rainfall that will appear at the outfalls from a site.
SEDIMENTA solid particulate matter, both mineral and organic, that has been or is being transported by water, air, ice or gravity from its site of origin.
SITE DISTURBANCE and STORMWATER POLLUTION PREVENTION PLAN (SD & SWPPP)A plan that accurately depicts existing and proposed excavation, grading and filling along with the design, implementation, management and maintenance of BMPs in order to reduce the amount of sediment and other pollutants in stormwater discharges associated with land disturbance activities and shall comply with the Missouri Water Quality Standards and ensure compliance with the terms and conditions of the NPDES.
SITE DISTURBANCE PERMITA permit issued by the municipality authorizing disturbance of the land at a specific site subject to conditions stated in the permit.
STABILIZATIONThe use of BMPs that prevent exposed soil from eroding including improvements and structures for the control of erosion, runoff and grading.
START OF CONSTRUCTIONThe first land disturbing activity associated with a development, including land preparation such as clearing, grading and filling; installation of streets and walkways; excavation for basements, footings, piers or foundations; erection of temporary forms; and installation of accessory buildings such as garages.
STOP WORK ORDERAn order directing the person responsible for the land disturbing activity to cease and desist all or any portion of the work which violates the provisions of this Chapter.
STORMWATER RUNOFFThe direct response of a watershed to precipitation and includes the surface and subsurface runoff that enters a ditch, stream, storm sewer or other concentrated flow during and following the precipitation.
WASH-OFF PADA stone base designed to provide a buffer area where construction vehicles can drop their mud to avoid transporting it onto public roads.
WATERCOURSEA natural or artificial channel or body of water, including, but not limited to, lakes, ponds, rivers, streams, ditches and other open conveyances that carry surface runoff water either continuously or intermittently.