Best Management Practices Handbook

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    18-Dec-2016

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  • Chapter 28.01 of the Lincoln Municipal Code wasapproved by the Lincoln City Council on June 25,2007. Through a federal mandate that isimplemented through the Nebraska Departmentof Environmental Quality, the City of Lincoln andother Nebraska communities are required toregulate stormwater runoff from construction sites.This guide has been developed to assist thebuilding industry in erosion and sediment controlto comply with stormwater requirements onconstruction sites.

    This guide outlines the process of obtaining a"permit" for land disturbance associated withbuilding construction and provides examples oftypical measures used for erosion and sedimentcontrol during construction activity. The examplesin the following pages are referred to as BestManagement Practices or ("BMPs"). In mostcases you will be implementing just a few of theseBMPs. Most of the examples in this guide havean image of a "good" compliance practice ( ) oran example of a site violation ( ). Please reviewthe guide and select the BMP(s) you will need formanaging your site.

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    Erosion and sediment control are importantelements in protecting the water quality in ourstreams and lakes. Dirt and other pollutants thatwash off construction sites ultimately drain toLincoln's streams and lakes untreated. Controllingerosion and sediment on a construction siteprevents adverse impacts to water resources andthe environment, and it is also federally mandated.

  • Based upon the Clean Water Act, theEnvironmental Protection Agency administersregulations for protecting streams and lakes frompollutants that come from construction activity.In Nebraska, EPA delegates the administrationof these regulations to the State of Nebraska.

    !" The Nebraska Department of EnvironmentalQuality is required to create state-specificregulations based on the EPA minimum requirements. In turn, Lincoln and other Nebraskacommunities are required to develop and enforcelocal programs based on the NDEQ minimumrequirements.

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    As required by NDEQ, the City of Lincoln hasimplemented regulations for construction activityby adopting Chapter 28.01 of the LincolnMunicipal Code. The City of Lincoln has alsodeveloped Chapter 9. "Erosion and SedimentControl," of the Drainage Criteria Manual toprovide detailed guidance and criteria forconstruction activity.

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  • Erosion control is the practice of preventing orcontrolling wind or water erosion in agriculture,land development and construction. This usuallyinvolves the creation of some sort of physicalbarrier, such as vegetation to absorb some of theenergy of the wind or water that is causing theerosion. In general terms erosion control is theprocess of keeping dirt in place. For example,sodding, seeding, and landscaping preventerosion of dirt.

    Sediment Control methods are employed toprevent dirt from leaving the construction siteafter it has eroded from its original location.For example sediment control practices includesilt fences, sediment traps, earth dikes, drainageswales, storm drain inlet protection, andsedimentation basins.

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    EPA requires permit coverage for parcels thatare part of a "larger common plan of developmentor sale". This is defined as a contiguous areawhere separate and distinct construction activitiesmay be taking place at different times on differentschedules under one plan. For example, if adeveloper buys a 20-acre parcel, builds roads,and installs utilities with the intention ofconstructing homes or other structures in thefuture, those parcels are considered part of alarger common plan of development or sale.If the land is parceled off or sold, and constructionoccurs on individual lots that are less than oneacre, the parcel is subject to construction activitypermitting requirements since the individual lotswere included on the original site plan.

  • The larger common plan of development or salealso applies to other types of land developmentsuch as industrial parks or well fields. A permit isrequired if one or more acres of land will bedisturbed, regardless of the size of any of theindividually-owned or developed sites.

    When applying for a building permit at the Buildingand Safety Department, you have two options.

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    ' The Developer Retains Full Responsibilityfor All Stormwater MeasuresIf you're building in a subdivision where a StormwaterPollution Prevention Plan (SWPPP) permit number isheld by the developer, you can request that numberand place it on your building permit application.

    Under this option the homebuilder or owner agreesto all terms of the developer's SWPPP which shouldmeet all federal, state, and local requirements.Developers providing their SWPPP permit numberagree to enforce any issues of non-compliancerelated to stormwater discharge on the builders' lots.See Chapter 28.01 Regulations for Construction SiteDischarges at lincoln.ne.gov keyword: mud.Any builder desiring to use the SWPPP number from adeveloper when obtaining a building permit, will need tohave a signed form from the developer approving theuse of that SWPPP number specifically for the addressfor which the building permit is for. If a builder doesn'thave such a letter with the necessary information,then Option Two applies.

    GarageCONSTRUCTION ACTIVITY SWPPP

    SWPPP Permit Number #

    If all portions of the Building Permit applicable arecomplete and the SWPPP number is provided toBuilding and Safety, there should be no delays in thebuilding permit process.

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    If you're building in a subdivision under this option,you'll need to obtain your own ConstructionStormwater Permit from the City of Lincoln.

    The Builder Has Full Responsibilityfor All Stormwater Measures

    Individual Lot

    Office Use Only

    Construction Stormwater Permit #Received By

    Notice of Intent (INOI)For Coverage Under the Federal Clean Water Act

    Submission of this form supercedes aPollution Prevention Plan (SWPPPnotification and disch

    For Construction Activity that is Part of a Larger Common Plan of D

    Under this option, the builder/owner assumes soleresponsibility for any Stormwater violations which maybe caused by the builder/owner on their lot during thebuilding phase of construction. However, thedeveloper has the option to notify the City of Lincolnabout any issues of builder/owner non-compliance.The City of Lincoln will have enforcement actionauthority with the builder/owner of the lot.

    On the reverse side of the INOI form are 10statements that will need to be read and initialed.

    An individual lot Stormwater Pollution Prevention Plan(SWPPP) is also required with the submission of theIndividual Lot INOI.

    An individual lot site plan is also required as part ofthe Stormwater Pollution Prevention Plan (SWPPP)and the Individual Lot INOI. Three site plans areavailable (see pages 6-8) depending on the directionof how the drainage flows on or off the lot.

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  • Inspections shall be performed at least onceevery 14 days during active construction andfollowing any rain event of one half inch orgreater. Below is an example inspection form.

    1. Site Conditions

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    Inspection:

    Inspection Date/Time: Inspector:

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    Weekly Rain Event Amount

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    Erosion control BMP'scould have helpedprevent this type ofdischarge into a local creek.

    Erosion control BMP'shelp prevent sedimenttrackout in the publicright of way.

  • Perennial cool season grasses are the mostcommonly used on residential projects. Bluegrassspecies can be used in irrigated areas but willrequire plenty of maintenance such as ongoingfertilizer applications. In rural areas where grasseswill be mowed frequently many types of fescue areavailable. Fescue grasses can be drought resistantand in turn require less moisture. Cool seasongrasses can be planted in spring or fall. Thesegrasses have a very shallow root structure.There are many warm season grasses native toNebraska. These grasses are normally found inrural areas but are also used in select areas inresidential plantings. Planting of warm seasongrasses is normally in the spring and can be plantedin the dormant season. Warm season grasses havea very deep root structure, are very drought tolerant,and require only normal rainfall for irrigation.

    Establishing finalstabilization onprojects can beachieved in anumber ofdifferent ways.Vegetationestablishmentis the keycomponent inprovidingerosion control.

    Sodding providesinstant erosion control.

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  • The process of