best management practice guide for residential construction...slumping fiber rolls. notes: 1. on...

Land Disturbance &Erosion and Sediment

Control Standards

Boone County, Missouri

Best Management Practice Guide for

Residential Construction

Introduction 3Permit Holder Responsibilities 4

Inspections 4 Temporary Construction Entrance 5

Perimeter Controls

Silt Fence 6

Fiber Rolls/Wattles 7

Erosion Control

Erosion Blanket 8

Seeding & Mulching 9

Sodding 10

Inlet Protection

Curb Inlets 11

Area (drop) Inlets 12

Check Dams 13

Soil Stockpiles 14

Other Pollutants 15

Compliance Checklist 16

Additional Setbacks 18

TableofContents

2

More details on the Best Management Practices (BMPs) in this brochure, along with additional BMPs, can be found in Boone County’s Stormwater Design Manual.

3IntroductionErosionisanaturalprocesswheresoilandrockareloosenedandre-moved.Naturalerosionoccursataveryslowpace,butwhenlandisdisturbedduringgradingandotherconstructionactivities,theero-sionrateincreasesdramatically.Whenerosionoccursonaconstruc-tionsite,sedimentisavailablefortransportbywindorstormwaterrunoff.Thedischargeofsedimentandotherconstructionsitepol-lutantscannegativelyimpactdownstreamwaterquality.

Wheninstallingsedimentanderosioncontrols,determinewhetherthereissheetfloworconcentratedflowofstormwaterontheprop-erty.Sheetflowoccursongentlyslopinglandwithoutdefineddrain-agewaysandstormwaterdispersesevenlyacrosstheproperty.Con-centratedflowoccurswheretherearedefineddrainageways,suchasswalesorclearlydefinedwaterways.Itispossibletohaveacombina-tionofsheetflowandconcentratedflowonthesameproperty.

Thisbrochureprovidesanoverviewofproceduresthatareacceptableforresidentialbuildingconstructionwithintheunincorporatedar-easofBooneCounty.Itisnotintendedtoaddressallcircumstances.

ThebuildingpermitholderisresponsibleforensuringadequateBestManagementPractices (BMPs)are inplaceandfunctioninguntilthebuildingpermitisfinaled.Insomecases,aStormwaterPollu-tionPreventionPlan(SWPPP)maybeineffectforyourlot,inac-cordancewithasubdivisiondevelopmentorotherlanddisturbanceactivitiestotalingoneacreormore.Checkwiththeownerorde-velopertoobtainacopyoftheSWPPP,asyoucouldberesponsibleforthatportionofthelanddisturbancepermitthataffectsyourlot.

InTroduCTIon

understandingthedifferenceBotherosionandsedimentcontrolpracticesarerequiredonconstructionsitestopreventsedimentfromleavingthesite.ErosionControlPreventserosionfromoccurringatconstructionsitesbykeepingsoilinplace.Examplesincludemulch,erosionblankets,seeding,andsitephasing.

SedimentControlCaptureserodingsedimentsandkeepthemon-siteandawayfromsurfacewaters.Examplesincludesettlingbasinsandsedimenttraps,siltfenceandstrawwattles(fiberrolls).

Itismuchchepertopreventerosionthanitistocapturesediment.

4

PermitHolderre

sponsibilities&Inspections

BooneCountyInspectionstaffwillinspectyourerosionandsedi-mentcontroldevicesduringroutinebuildingand/orsubdivisionin-spections.

IfBMPsarenotinstalledinthecorrectlocationand/orarenotin-stalledcorrectly,theinspectionwillbedenied.

Issueswitherosionandsedimentcontrolmeasuresshouldbecor-rectedwithinsevencalendardays.Noinspectionwilloccuruntiltheissuehasbeencorrected.

InSPECTIonS

BuIldIngPErmITHoldErrESPonSIBIlITIES

1. Erosionand sedimentcontroldevicesmust remain functionaluntilthesiteispermanentlystabilized.

2. The permittee is responsible for all on-going maintenance oferosionandsedimentcontroldevices.

3. Protectanyareainletsonthelot,aswellascurbinletsalongthestreet.

4. Atemporaryconstructionentranceisrequireduntiladrivewayisbuilt.

5. Cleanupanysedimenttrackoutonthestreetdaily.

6. Thepermitteeisresponsibleforkeepingtrashandconstructiondebrison-siteandinanapprovedcontaineratalltimes.

Thel

ack

ofse

dim

entc

ontro

lson

this

site

coul

dre

sult

inp

ollu

ted

wate

ran

dco

mpl

ianc

evio

latio

ns.

noTES:

1. StoneSize-Twoinchstone2. Length-Asrequiredtopreventtrackout.3. Thickness-Notlessthansixinches.4. Width-20footminimum,butnotlessthanthefullwidthat

pointswhereingressoregressoccurs.5. FilterCloth-Willbeplacedovertheentireareapriortostone

placement.6. SurfaceWater-Flowingovertheconstructionentrancemust

bepipedorbermed.

5TemporaryConstructionEntrance

mAInTEnAnCE:

1. Inspectweeklyandaftereachraineventgreaterthanone-halfinch.

2. Additional top dressing with stone and/or clean-out may beneededtopreventsedimenttrackout.

3. All sediment spilled, dropped, washed or tracked onto publicrights-of-waymustberemoveddaily.

TEmPorAryConSTruCTIonEnTrAnCE

noTES:

1. Theheightofthefenceshallbeaminimumof16inchesabovethegroundsurface.

2. Fastenthefencetotheupslopesideofthepostsusingamini-mumofoneinchlong,heavydutywirestaplesortie-wires.

3. Backfillthetrenchwithdirtorgravel.

6

PerimeterControls-SiltFence SIlTFEnCE

mAInTEnAnCE:

1. Inspectsiltfencesweeklyandaftereveryraineventgreaterthanone-half inch. Makeanyrepairsimmediately.

2. Replaceanyineffec-tive,torn,collapsedordecomposedfence.

3. Sedimentaccumula-tionshouldnotexceedone-halftheheightofthefence.Removesedimentdepositsasnecessarytoprovideadequatestoragevolumeandreducepressureonthefence.

7PerimeterControls-Fiberrolls/W

attlesFIBErrollS/WATTlES

mAInTEnAnCE:

1. Inspectweeklyandaftereveryraineventgreaterthanone-halfinch.

2. Remove sediment accumula-tionwhen it reachesone-half theheightoftheroll/wattle.

3. Repair split, torn, unraveled, orslumpingfiberrolls.

noTES:

1. On slopes, install fiber rolls along the contour with a slightdownwardangleattheendofeachrowtopreventpondingatthemidsection.

2. Typically,therollsareinstalledalongsidewalks,onthebarelotside, to keep sediment from washing onto sidewalks, streets,guttersandstormdrains.

8

ErosionCo

ntrol-ErosionBlanket

noTES:

1. Soilneedstobefreeof largerocksanddirtclods,seededandfertilizedpriortoinstallation.

2. Startlayingtheblanketfromtoptobottom,staplingasyougo.Ifyouhavetoaddanotherpiece,makesurethebeginningfabricoverlapstheaddition.Donotstretchtheblankettight.

EroSIonBlAnkET

mAInTEnAnCE:


2. Repairerosionand/orunderminingattopofslopebyfillingandcompactingerodedarea,revegetating,andresecuringtheblan-ket.

3. Reposition or replace blanket(s) that have moved along theslopeorhavebeendamaged.

noTES:

1. Completegradingandremovealldebrislargerthanoneinch.2. Loosencompactedsoilstoadepthoffourinches.Spread

loosetopsoilatadepthoffourinches.3. Seedandmulchexposedsoilafterfinishgradinghasbeencom-

pleted,orareaswherenoactivitywilloccurfor14days.

SEEdIng/mulCHIng

mAInTEnAnCE:1. Inspectweeklyandaftereachraineventgreaterthanone-half

inch.2. Reseedandmulchareasthathavenotsproutedwithin21days

ofplanting.3. Repairdamagedor erodedareas and reseed/mulchand stabi-

lizedasneeded.4. Donotmowuntil four inchesofgrowthoccurs. During the

firstfourmonths,mownomorethanone-thirdthegrassheight.

9ErosionControl-Seeding&mulching

PermanentSeedinglawnSeedmixtures

Grass % by WeightTallFescue 90%AnnualRyegrass 10%

SeedingRate-400lb./acre

TemporarySeedinglawnSeedmixtures

Grass % by WeightTallFescue

Canbeanycombination

ofgrasseslisted.

AnnualRyegrassMilletWheatOats


dormantSeedinglawnSeedmixtures

Grass % by WeightTallFescue 80%AnnualRyegrass 10%SpringOats 10%


10

ErosionCo

ntrol-Sodding

SoddIng

noTES:

1. Remove all debris larger than one-half inch in diameter andconcentratedareasofsmallerdebris.

2. Buttthestripstightlytogether.Donotleavegapsoroverlap.3. Rollsodtoachievefirmcontactwiththesoil.4. Applywaterimmediatelyafterinstallation.Provideenoughto

soakfourinchesintothesoilwithoutcausingrunoff.

mAInTEnAnCE:

1. Waterdailyforthreeweeks.2. Repositionareasthathavemovedalongtheslope.3. Removesedimentaccumulations.4. Donotmowuntilthreeinchesofnewgrowthoccurs.During

thefirstfourmonths,mownomorethanone-thirdthegrassheight.

Sod pattern

Flow

11InletProtection-Curb&gutterInlets

CurBInlETProTECTIon

mAInTEnAnCE:


2. Removetrash,debris,andsedimentfrominletstructureasneed-ed.

3. Remove sediment from inlet protection when one-half theheighthasbeenfilled.

noTES:

1. Addanoverflowbypassintotheinletprotectionstructure.2. Sedimentcontrolsbehindthecurbarenecessarytopreventthe

dischargeofsedimentinthesebypasses.

12

InletProtection-AreaInlets

noTES:

1. Spacestakesevenlyaroundtheperimeteroftheinletatamaximumofthreefeetapartand18inchesdeep.

2. Makeaframeof2x4woodstripsaroundthecrestoftheoverflowareaatamaximumofoneandone-halffeetabovethecrest.

3. Backfillthebottomofthefenceinatrench.4. Fastenfencewithstaples,orwireittothestakesandframe.

ArEA(droP)InlETProTECTIon

mAInTEnAnCE:1. Inspectweeklyandafter

each rain event greaterthanone-halfinch.

2. Remove trash, debris,andsedimentfrominletstructureasneeded.

3. Removesedimentfrominlet protection whenone-halftheheighthasbeenfilled.

13Checkdam

s

noTES:

1. Placeatadistanceandheighttoallowsmallpoolstofrombe-hindthem.

2. Installthefirstcheckdamapproximately16feetfromtheout-falldevice.

CHECkdAmS

mAInTEnAnCE:


2. Removetrashandleafaccumulation.Removesedimentwhendepthreachesone-halfofthecheckdamheight.

14

SoilStockpiles

SoIlSToCkPIlES

noTES:

1. Stockpiles should not be located near the street or adjacentpropertylines.

2. Perimetercontrolshouldbeinstalledaroundallstockpiles. Ifusingsiltfence,donotinstalldirectlyatthetoeofthestockpile

3. Ifyourstockpileissmall,considercoveringitwithatarp.4. Stockpilesshouldbestabilizedifnotactivelybeingworked.

mAInTEnAnCE:


2. Repair/replaceperimetercontrolsasneeded.3. Removesedimentfromperimetercontrolwhenitreachesone-

halftheheightofthecontrol.

15otherPollutants• ConstructionWaste-mustbedisposedofbyalicensedsolidwastemanagement contractor. Wastemaynotbeburiedon-site.

• ConcreteTruckWashout -cannotmakecontactwithstormwatersornaturalstreams.

• Fueling-Providesecondarycontainmentbarriersforfuelstoredon-site.

• Fertilizers - Follow the manufacturer’s directions andstoreinacoveredareaorwatertightcontainer.

• HazardousMaterials -Storehazardousmaterials suchasoils,greases,paints, fuels, andchemicals inacoveredareawithsecondarycontainment.Disposeoftheseitemsaccordingtostateregulationsandmanufacturer’srecom-mendations.

• PetroleumProducts-Storeinclearlylabeledandtightlysealedcontainersortanks.Wastewaterfrompaint,dry-wall,stuccoormasonrycannotenterthestormwatersys-temorbedisposedofwhereitcaneventuallywashintocreeksandstreams.

• SanitaryWaste-Maintainportableunitsthroughastatelicensedsanitarywastemanagementcontractor.

• Dewatering-Pumptrenches,foundationsorotherexca-vatedareassoasnottodepositsedimentoff-siteorcauseerosion.Afilterbag,sedimenttraporvegetatedareamaybeusedtofiltersediment.

oTHErPolluTAnTS

16

ComplianceCh

ecklist

ComPlIAnCE

CHEC

klIST

Bestmanagem

entPractice(Bm

P)

Inle

tPro

tect

ion

-BM

Psa

rein

plac

ean

dfu

nctio

ning

forb

oth

area

and

cur

bin

lets.

Mai

nte-

nanc

einc

lude

srem

oval

ofse

dim

entf

ollo

wing

each

rain

even

tand

repl

acem

ento

ffai

lingm

ater

ials.

Do

nota

llow

sedi

men

tto

ente

rinl

etd

urin

gm

aint

enan

ce.

Perim

eter

Con

trol

s-B

MPs

arei

nsta

lled

along

bac

kof

curb

and

along

thel

otli

neo

fadj

acen

tpr

oper

tiesw

hich

are

dow

nhill

and

rece

ive

runo

fffro

mth

epe

rmitt

edlo

t.F

ollo

wing

side

walk

insta

l-lat

ion,

BM

Psa

rem

oved

toth

eba

cko

fthe

side

walk

top

reve

ntse

dim

entf

rom

reac

hing

the

sidew

alk.

BMPs

are

mai

ntai

ned

toe

nsur

epr

oper

func

tion,

inclu

ding

repa

iror

repl

acem

ento

ftor

n,d

egra

ding

,m

issin

goro

ther

wise

ineff

ectiv

emat

eria

ls.R

emov

esed

imen

tdep

osits

asn

eces

sary

top

rovi

dead

equa

te

prot

ectio

n.

ComPlIAnCE

CHEC

klIST

Bestmanagem

entPractice(Bm

P)

Inle

tPro

tect

ion

-BM

Psa

rein

plac

ean

dfu

nctio

ning

forb

oth

area

and

cur

bin

lets.

Mai

nte-

nanc

einc

lude

srem

oval

ofse

dim

entf

ollo

wing

each

rain

even

tand

repl

acem

ento

ffai

lingm

ater

ials.

Do

nota

llow

sedi

men

tto

ente

rinl

etd

urin

gm

aint

enan

ce.

Perim

eter

Con

trol

s-B

MPs

arei

nsta

lled

along

bac

kof

curb

and

along

thel

otli

neo

fadj

acen

tpr

oper

tiesw

hich

are

dow

nhill

and

rece

ive

runo

fffro

mth

epe

rmitt

edlo

t.F

ollo

wing

side

walk

insta

l-lat

ion,

BM

Psa

rem

oved

toth

eba

cko

fthe

side

walk

top

reve

ntse

dim

entf

rom

reac

hing

the

sidew

alk.

BMPs

are

mai

ntai

ned

toe

nsur

epr

oper

func

tion,

inclu

ding

repa

iror

repl

acem

ento

ftor

n,d

egra

ding

,m

issin

goro

ther

wise

ineff

ectiv

emat

eria

ls.R

emov

esed

imen

tdep

osits

asn

eces

sary

top

rovi

dead

equa

te

prot

ectio

n.

17

Tem

pora

ryC

onst

ruct

ion

Ent

ranc

e-R

equi

red

fore

ach

indi

vidu

allo

t.A

surfa

cesu

it-ab

lefo

rpar

king

and

unl

oadi

ngth

atp

reve

ntst

rack

ing

ofm

uda

ndro

cko

nto

the

stree

tisi

nsta

lled.

A

min

imum

dep

tho

fsix

inch

eso

ftwo

inch

ston

eis

requ

este

d.A

llve

hicle

stha

tacc

esst

helo

tsha

llus

eth

econ

struc

tion

entra

nce.

Res

trict

oth

erac

cess

ifn

eces

sary

top

reve

nttr

acki

ngo

nto

thes

treet

.

Soil

Stoc

kpile

sare

pro

tect

edto

pre

vent

sedi

men

tfro

mre

achi

ngth

estre

etan

dad

jacen

tpro

per-

ties.

Sto

ckpi

lesar

eloc

ated

away

from

stre

etsa

ndp

rope

rtyli

nes.

Inte

rmed

iate

Con

trol

-L

ong

ors

teep

dra

inag

epa

ths

have

inte

rmed

iate

or

inte

rior

BMPs

in

stalle

dto

help

slow

thefl

owo

frun

off.F

ailu

reo

fper

imet

erco

ntro

lsdu

eto

thef

orce

ofr

unoff

ofte

nde

term

ines

then

eed

fori

nter

med

iate

cont

rols.

Oth

erP

ollu

tant

s-T

rash

and

oth

erd

ebris

are

con

tain

ed.

All

waste

wat

er,i

nclu

ding

con

cret

ewa

shou

t,is

prop

erly

disp

osed

of.

Mat

eria

lsan

dch

emica

lsar

esto

red

prop

erly.

Dew

ater

ing

isdo

nein

su

cha

man

nera

snot

tod

epos

itse

dim

ento

ffsit

eorc

ause

eros

ion.

Co

urtes

y of C

ity of

Lea

woo

d, KS

ComplianceCh

ecklist

18

AdditionalSetbacks

Stream Buffer RequirementsStreamside ZoneStreamType: TypeI TypeII TypeIIIWidth: 50 25 15Outer ZoneStreamType: TypeI TypeII TypeIIIWidth: 50 25 15

• All streams must have a drainage area of 50 acres for the stream buffer to kick in.

• The outer zone width can change depending on the slope. See chart below.

• If you think a stream buffer may apply to your develop-ment, contact Boone County at 573-886-4330.

Modifications Based on SlopePercent Slope Width of Outer Zone0-14% NoChange15%-25% Add25feetGreaterthan25% Add50feet

Type III Stream Buffer

19AdditionalSetbacks

AddITIonAllAnduSErESTrICTIonSnEArSTrEAmS

Use Required Distance

Storageanduseofhazardoussubstances(Upto20gal.ofliquidfertilizersorpesticidesandupto100gal.ofgranularfertilizersorpesticidesisalloweduptotheedgeoftheouterzone.)

300feet

Above-or-belowgroundpetroleumstorage(Upto500gal.ofheatingoil,gasoline,ordieselfuelandupto1,000gal.ofpropaneisalloweduptotheedgeoftheouterzone.)

300feet

Salvageyardsorautomobilerecyclers 600feet

EnvIronmEnTAllySEnSITIvEArEAS*Sensitive Area Required BufferWetlands 50feetLosingStreams(streamorportionofstreamisdivertedunderground)OutstandingResourceWaters(hasoutstandingresourcevalue)

TypeIStreams:200feetTypeIIStreams:100feetTypeIIIStreams:60feet

ClassPStreams(permanentlyflowing)TypeIStreams

50feetminimum

SinkholesCaves

150feetminimum300feetmaximum

*Landdevelopmentinornearanecologicallyand/orenvironmen-tallysensitiveareathatdisturbsmorethan3,000ft2requiresaLandDisturbancePermit.

Courtesy of Boone County

Created by the Resource Management - Stormwater Division

Boone County, Missouri

Resource ManagementStormwater ManagementDivisonRoger B. Wilson Government Center801 E. Walnut, Rm 315573-886-4330

www.showmeboone.com

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