Appendix C SC Best Management Practices for Forestry.pdf

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ALB Tree Removal, Deregulation, restoration - South Carolina
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This is a Best Management Practices (BMPs) manual for forestry operations in South Carolina, providing environmental stewardship guidelines for forest landowners and professionals. The document addresses protection of water quality during forestry activities in compliance with Section 404 (dredge and fill) of the Clean Water Act and consistency with EPA's Guidance on Non-Point Pollution in Coastal Waters. All forestry practices must comply with the Endangered Species Act. The South Carolina Forestry Commission serves as the lead agency for designing, interpreting, monitoring, and updating these BMPs, with authority to grant variances from specified practices based on landform features.

The manual covers thirteen primary management areas: Streamside Management Zones (SMZs), Stream Crossings, Forest Road Construction, Timber Harvesting, Site Preparation, Reforestation, Prescribed Burning, Pesticides, Fertilization, Minor Drainage, Endangered Species Act compliance, and Wildlife Management. For each topic, the document specifies Best Management Practices to follow and activities to avoid. Key provisions include maintaining minimum SMZ widths of 40 feet on each side of perennial and intermittent streams (80 feet for designated trout waters with slopes exceeding 5%), proper culvert sizing and installation at stream crossings, road construction limited to ridgelines with drainage structures at specified intervals, selective harvesting techniques to minimize soil disturbance, site preparation methods matched to slope gradients, and restricted use of pesticides and herbicides within sensitive areas. The manual emphasizes minimizing erosion, sediment transport, and water quality degradation through careful planning and implementation of forestry operations across diverse South Carolina landscapes ranging from coastal plains to mountains.

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BM

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SOUTH CAROLINA'S

B M M PBest anagement Practices

FOR FORESTRY

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Table of ConTenTs

Introduction 3

Streamside Management Zones 5

Stream Crossings �4

Forest Road Construction �0

Timber Harvesting 30

Site Preparation 38

Reforestation 43

Prescribed Burning 44

Pesticides 46

Fertilization 48

Minor Drainage 49

Endangered Species Act 5�

AdditionalManagementOptions:53
WildlifeManagement

Glossary 55

Index 6� est ractices anagement

InTroduCTIon

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S outhCarolina’sForestryBest Management Practices
(BMPs)giveforestlandownersandtheprofessionalforestry
communityguidelinestofollowinpracticinggoodstewardship
onourvaluableforestland.Goodstewardshipduringforestry
activitieswillprotectthewaterqualityofnearbystreams,
lakes,orponds.MostoftheBMPsinthismanualaddressthe
protectionofwaterqualityortherequirementsofSection
404(dredgeandfill)oftheCleanWaterAct.TheBMPsin
thismanualhavebeendesignedtobeconsistentwiththemanagement
measuresasdescribedintheEnvironmentalProtectionAgency(EPA)
publicationentitledGuidanceSpecifyingManagementMeasuresfor
SourcesofNon-PointPollutioninCoastalWaters,January�993.All
forestrypracticesmustcomplywiththeEndangeredSpeciesAct(see
p.5�).AdditionalBMPsareincludedasrecommendationstoland
ownerstoconservesiteproductivity,dependingonthelandowner’s
goals.BMPsarenottobeconstruedasrequiredunderanylaws
pertainingtowaterqualityonsiteswherethereisnoriskofoff-site
impact.Additionalmanagementoptionsareincludedwherewildlife
isaprimaryconcernofthelandowner.
TheconceptofBMPswasfirstintroducedinresponsetofederal
legislation,theCleanWaterAct,asapracticalandeffectivemeans
toreducenonpointsource(NPS)pollution.CompliancewithBMPsis
requiredforforestryactivitieswhichinvolvedischargeofdredgeor
fillmaterialsintojurisdictionalwetlandstoqualifyforthesilvicultural
exemptionunderSection404(f)oftheCleanWaterAct.Compliance
withBMPsisrecommendedonallsitesonwhichthereisapotential
forviolatingwaterqualitycriteriaasdefinedbytheSouthCarolina
PollutionControlAct.

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TheSouthCarolinaForestryCommissionistheleadagencyinSouth
Carolinaindesigning,interpreting,monitoring,andupdatingforestry
BMPs.Questionspertainingtointerpretationsofthismanualshould
bedirectedtotheS.C.ForestryCommission.Certainlandformfea
turesmayrequirevariancesfromspecifiedBMPstobetterprotect
theenvironment.VariancescanonlybegrantedbytheS.C.Forestry
Commission.FutureBMPmanualrevisionswillbebasedonscientific
research,monitoringresults,andtechnologicalimprovements.
BMPsrelatedtowaterqualityshouldbeviewedasstandardswhich
mayrequireadjustmentbasedonspecificsiteconditionsandown
ershipboundaries.Forexample,naturaldisasterssuchashurricanes,
tornadoes,floods,orwildfirescreateextremeconditionsforwhich
BMPsarenotdesigned.TheresponsibilityofadjustingBMPsmayrest
oneitherthelandownerortheoperatordependinguponcontract
terms.Becauseofthetechnicalnatureoftheseguidelines,landowners
areencouragedtomakeuseofalicensedforesterorotherqualified
professionalsasneeded.
AnefforthasbeenmadeinwritingthisBMPmanualtoitalicizetechni
calwordsorphrasesandclearlydefinethemintheglossary.

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P est ractices anagement sTreamsIde managemenT Zones

andadjacenttoperennial,intermittent,andephemeralstreamsand
pondsorlakesrequiresspecialattentionduringforestryoperations.
TheseStreamsideManagementZones(SMZs)arecriticalareas
whereNPSpollutantscanentertheaquaticsystem(Figure�).
Perennialstreamsareidentifiedbywell-definedbanks
andnaturalchannels,andhavecontinuouslyflowing
watermostyears.
Intermittentstreamsalsohavewell-definedbanksand
naturalchannels,buttypicallyhaveflowingwaterfrom
aheadwatersourceforonlyaportionoftheyear.
Ephemeralstreamsgenerallydonothavewell-defined
channels,andflowonlyinresponsetolocalizedprecipi-
tation.
Identifyingthetypeofstreamisimportantinprescribingthelevelof
streamsideprotection.Usuallyalandownerormanagerwillbemost
familiarwithastream’sflowcharacteristicsandcanmakethedetermi
nation.However,insomesituationsthelandownerormanagermay

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beuncertainorhavelittleknowledgeofastream’sflowcharacteristics.
Forexample,braidedstreamswithmultipleinterconnectedchannels
canbedifficulttoidentify.Inthesesituationsalicensedforesteror
otherqualifiedprofessionalshouldbeconsulted.
TheSMZisdividedintotwoparts:theprimaryandthesecondary.
TheprimarySMZis40feetwideoneachsideofthestream,except
fordesignatedtroutwaterswithslopesgreaterthan5%wherethe
primarySMZis80feet.ThewidthofthesecondarySMZdepends
ontheaveragepercentslopeperpendiculartothestream.Minimum
requiredwidthsofsecondarySMZsundervariousconditionsare
listedinFigure�.

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Figure�.Areasoflandcalledwatershedscollectprecipitationandfunnelitthrougha
networkofstreamchannelstoanoutletatthebottom.Perennial,intermittent,
andephemeralstreamsareoftenfoundinforestedwatersheds.
Figure�.Areasoflandcalledwatershedscollectprecipitationandfunnelitthrougha
networkofstreamchannelstoanoutletatthebottom.Perennial,intermittent,
andephemeralstreamsareoftenfoundinforestedwatersheds.

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Ephemeralstreamsdrainwatertointermittentstreamchannels.Thesecarrythewater
toperennialstreamswhichflowtothewatershedoutlet.

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Forestmanagementactivitiesarerestrictedwithinboththeprimary
andsecondarySMZs.Theserestrictionsarelistedbelow.

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PRIMARY SMZ

Perennial and Intermittent Streams

BMPs

Onperennialstreams,selectindividualtreesforharvest,
makingsuretoleaveaminimumof50squarefeetof
overstorybasalareaperacreevenlyspacedthroughout
thezone.Leavealltreesiflessthan50squarefeetof
overstorybasalareaperacreexists.Theintentistomain-
tainsufficientoverstoryandunderstorycovertoprovide
shade,maintainbankstability,andprotectwaterquality.
Onintermittentstreams,permanentresidualtreecover
isnotrequiredaslongasothervegetationandorganic
debrisarelefttoprotecttheforestfloorandstream
banks.
Felltreesawayfromthestreamexceptwheresafetyisa
concern.
Removetreesinamannerthatminimizesdisturbanceof
theforestfloor,exposureofmineralsoil,ordegradationof
streambankstability.Underdrygroundconditions,direc-
tionalfellingandremovaloftreeswithmechanicalequip-
mentmaybeutilized.
Handplantordirectseedwhereartificialregenerationis
desired.
Removetopsorotherloggingdebrisdroppedintostream
channel.
Handleandstoretoxicandhazardousmaterialsuchas
fuels,lubricants,andsolventsoutsideoftheSMZ.

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Avoid

Logging debris in the stream.

Mechanical site preparation or machine planting.

Portable sawmills or log decks.

Broadcast application of any pesticide.

Road construction except where necessary for stream crossing.

SECONDARY SMZ

Perennial and Intermittent Streams

BMPs

Use all types of silvicultural harvest systems.

Usesitepreparationpracticesthatdonotsignificantly
disturbsurfacesoil.

Hand or machine plant or direct seed.

Carefully use wheeled or tracked vehicles.

Handleandstoretoxicandhazardousmaterialssuchas
fuels,lubricants,andsolventsoutsideoftheSMZ.
Avoid
Portablesawmillsandlogdecks.
Roadconstruction,exceptwherenecessaryforstream
crossing.
Excessiverutting,especiallywhererutsrunperpendicular
toastream.

Exposing more than �5% of the mineral soil.

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Figure�.RecommendedprimaryandsecondaryStreamside
ManagementZone(SMZ)widthsforperennialand
intermittentstreams.

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Ephemeral Streams

Ephemeralstreamsgenerallyflowintheupperreachesofawater
shedfollowingprecipitation.Althoughwell-definedchannelsmay
bepresentinuniquesituations,ephemeralstreams(commonlyre
ferredtoasdrains)rarelycarryenoughrunofftodisplacesoil,but
theymaydisplacethelitterontopofthesoil.Theydoflowdirectly
intointermittentandperennialstreams.Therefore,theforestfloor
inephemeralareasshouldbeprotectedsothatsedimentcanbe
filteredoutbeforerunoffentersthewatercourse.Handleandstore
toxicandhazardousmaterialsuchasfuel,lubricants,andsolvents
outsidetheephemeralarea.

Avoid

Portable sawmills and log decks within the drain.

Skiddinglogsduringwetconditionswithinthedrainexcept
atinfrequentplannedcrossings.
Sitepreparationpracticesthatsignificantlydisturbthesoil
withintheephemeralarea.

Applying pesticides or fertilizers if surface water is present.

Altering the flow of the runoff.

Road construction except where necessary for crossings.

Emptying road runoff directly into drains.

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Trout Waters

Troutrequirecool,clearstreams.They,andtheaquaticinsectsthey
feedon,areespeciallysensitivetoincreasedsedimentation.Since
SouthCarolinaisnearthesouthernlimitofthetrout’srange,water
temperatureisalsoacriticalfactor.Itisthereforeimportanttotake
specialprecautionstominimizesedimentationandtomaintaina
shadecovertopreventexcessivewarmingofthewater.

Additional BMPs

IncreasethewidthoftheprimarySMZfrom40feetto
80feetonslopesover5%.
Drainwaterfromroadsandskidroadsontoridgesand
sideslopes.Drainagestructuresshouldnotdivertwater
directlyintostreams.
RevegetateexposedsoilswithintheSMZfollowingroad
constructionassoonaspossibletotakeadvantageofthe
loosesoilconditionsforseeding.
Usemulch,gravel,and/orrockifneededtohelpstabilize
fillswhereroadsandskidroadscrossstreams.

Trout Waters in South Carolina

Water Body County Description

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Cox Camp Creek

East Fork Chattooga River

Emory Creek

Lake Jocassee

Matthews Creek

Saluda River (main stem)

Savannah River

Swaford Creek

Whetstone Creek

Willis Creek

Greenville

Oconee

Pickens

Oconee

Greenville

The entire creek tributary to the

Middle Saluda River

Thatportionoftheriverfromits
confluencewithIndianCampBranch

to the Chattooga River

Thecreekfromthenorthernboundary
ofTableRockResortpropertytoits

confluence with the Oolenoy River

The entire lake

FromtheendofStatelandinthe
MountainBridgeAreatoitsconfluence

with the South Saluda River

Lexington/RichlandThatportionfromtheLake
MurrayDamtotheconfluencewith

the Broad River

Abbeville From Lake Hartwell Dam to the head-waters of Lake Russell

Oconee The entire creek tributary to East Fork

Chattooga River

OconeeTheentirecreektributarytothe
ChattoogaRiver

Pickens The creek from the northern boundary of Table Rock Resort property to its confluence with the Oolenoy River

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G sTream CrossIngs

treamcrossingsaresometimesnecessaryforaccessto
forestlands.Allcrossingsneedtobeplannedtominimize
environmentalimpacts.Specificpracticesarerecommended
inthissectiontoassureminimumimpactsonwaterflow
andaquaticorganisms.Bridges,culverts,andfordsareall

acceptable stream crossings when matched to the site and installed properly.

Bridgeconstructionacrossnavigablewaterwaysisunderthejuris
dictionoftheSouthCarolinaDepartmentofHealthandEnvironmental
Control(DHEC).*Permanentbridges(thosethatwouldremain
inplaceforaperiodgreaterthansixmonths)mustmeethigher
standardsthantemporarybridges.Anyoneplanningtoconstructa
bridgeacrossanavigablewaterwaymustcontactDHECforpermit
applicationformsandtechnicaldesigninformation.

*DHEC: �600 Bull St., Columbia, S.C. �9�0� (803-�34-5360)

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BMPs

Crossstreamsatrightanglesexceptwherepreventedby
geologicfeatures.
Keepapproachestostreamcrossingstoasgentlea
slopeaspractical.
Usedrainagestructures,suchaswaterturnoutsorbroad-
baseddips,onbothsidesofacrossingasneededtopre-
ventroadandditchrunofffromenteringthestream.

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BMPs continued

Ensure proper sizing and installation of culverts (Table�).

Stabilizedisturbedsoilaroundcrossingssoonafter
construction(Table�).
Usealicensedforesterorotherqualifiedprofessionalto
locatestreamcrossingspriortoroadconstructionto
minimizeimpacts.

Consider using portable bridges instead of culverts.

FollowallBMPslistedunderForest Wetland
Road Construction(p.�6).

Using soil as fill material except when installing culverts.

Allowingrunofffromroadsideditchestoflowdirectly
intostreamsatthecrossings.

Altering the flow of the stream.

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Culvert Installation

Place culvert on the grade of the existing stream channel.

Installculvertswhicharelongenoughtoextendbeyond
thetoeofthefillslopes.
Compactbackfillmaterialtopreventwaterfromseeping
aroundtheculvert.
Covertheculvertwithenoughfilltopreventdamageby
traffic.
Iferosionisaproblem,constructaheadwallontheinlet
sideandanapronofrip-rapattheoutlet,iftheoutletis
placedabovethetoeofthefill.
Stabilizedisturbedsoil.Ifmulchandseedareused,refer
toTable�.

Woody Fill

Woodymaterialmaybeusedasfilltoprotectstreambanksand
bottomsincrossingsmallintermittentandephemeralstreamswith
well-definedchannelsif:
Soilisnotintroducedintothestreamwiththewoody
fill.Soilblockstheporespaceamongthewoodydebris,
impedingdrainageandincreasingtheamountofsediment
inthewatercourse.

Stream flow is not blocked or diverted.

Woody material that restricts flow of water is removed.

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Culvert Installation

Figure3.Earthcoveroverpipeshouldbeaminimumof��"or�/�the
culvert'sdiameter,whicheverisgreater.

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Table�:RecommendedDiametersforPermanent/Temporary
CulvertedCrossings

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DRAINAGE

AREA
(acres)
LOWER
COASTALCOASTAL

PLAIN

UPPER

PLAIN

PIEDMONT MOUNTAIN

PERMANENT

�0 �00 �00

�4" 36" 48" 60"

�8" �4" 36"

30" 48" 54"

�4" 48" 60"

TEMPORARY

�0 �00 �00

�8" �4" 30"

�8" �4"

�8" 30" 36" 4�"

�4" 30" 36"

(CulvertdiametersarebasedonU.S.GeologicalSurvey(USGS)dataasreportedinUSGS
Report9�-4�5�,Columbia,S.C.,�99�.)
Temporaryculvertsaresizedforstormflowswithatwo-year-
recurrenceinterval.Permanentculvertsaresizedforstormflows
with�5-year-recurrenceintervals.Multiplesmallerculvertsdesigned
tocarryequivalentwaterflowcanbesubstitutedfortheabove
culvertsizes.

For example:

Two 48" culverts can be substituted for a 60" culvert.

Two 54" culverts can be substituted for a ��" culvert.

Analternativeisacombinationofasmallerculvertandrocksurfaced
roaddips,wheretheculvertissizedforannualstormflows,andthe
rocksurfacedroaddipisdesignedtohandletheflowfromlarger
stormevents.LandownersareencouragedtocontactalocalU.S.
NaturalResourcesConservationServicerepresentativeorother
qualifiedprofessionaltodesignculvertedcrossingsspecificallyfor
eachsite.

AREA

SPRING AND EARLY SUMMER

LATESUMMER,FALL,AND
EARLYWINTER

MOUNTAINS

Kentucky3�Fescue(earlyspring)30lbs./acre
(or)OrchardGrass(latespring)��lbs./acre
BrowntopMillet�0lbs./acre
*ScarifiedSericeaLespedeza�0lbs./acre
Kentucky3�Fescue30lbs./acre
AnnualRye�0lbs./acre
*UnscarifiedSericea
Lespedeza�5lbs./acre

PIEDMONT

Kentucky3�Fescue(earlyspring)30lbs./acre
BrowntopMillet�0lbs./acre
Bahia�0lbs./acre
*ScarifiedSericeaLespedeza�0lbs./acre
Kentucky3�Fescue30lbs./acre
AnnualRyegrass5lbs./acre
AnnualRye�0lbs./acre
*UnscarifiedSericea
Lespedeza�5lbs./acre
COASTALBermudagrass(hulled)4lbs./acreBahia30lbs./acre
PLAINBahia�5lbs./acre*UnscarifiedSericea
*ScarifiedSericeaLespedeza�5lbs./acreLespedeza60lbs./acre
BrowntopMillet�0lbs./acreAnnualRye�0lbs./acre

*Sericea may be left off on low erosion hazard areas.

NOTE:Fertilizewith800to�,000lbs.peracreof6-��-��.Mulchslopeswith4,000lbs.smallgrainstraw
or5,000lbs.hayperacre.

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Table�:RecommendationsforSeeding,Mulching,andFertilizing
Roads,Fills,andOtherDisturbedAreas

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est ractices anagement foresT road ConsTruCTIon

orestroadsareneededtoprovideaccessforforestman
agementandrecreationalactivities.Permanentmainaccess
(MA)roadsandtemporarylimiteduse(LU)roadsshould
beplannedinadvanceofroadconstructioninorderto
protectwaterquality.
Historically,roadshavebeenoneofthemajorsourcesofsediment
fromforestryrelatedactivities.Planningcanreduceskiddingdistances
andeliminateunnecessaryroads.Useofbroad-baseddips,waterbars,
filterstrips,andothersedimentcontroltechniquescansignificantly
lowertheamountoferosionwhichmightotherwiseoccur.
Toprotectwaterquality,roadsshouldbedesignedtominimizethe
amountofsedimententeringstreamchannels.

Figure 4. Culverts provide cross drainage for roads with inside ditches. F O

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BMPs

Planning

Identify and avoid sensitive sites where possible.

Designtheroadsystemtomeetlong-rangeobjectivesrather
thansimplytoaccessindividualsites.Numerousseparate
roadprojectstendtohavemoreenvironmentalimpactthan
onewell-designedroadsystem.
Locateroadsonthesidesofridgestoensureproper
drainage.
Followthecontourasmuchaspossible,withgradesbetween
0%and�0%,exceptwhereterrainrequiresshort,steep
grades.Breakingorchanginggradefrequentlywillcause
fewererosionproblemsthanlong,straight,continuous
gradients.
Useoutslopedroadbeds,onhillyormountainousterrain,to
removesurfacerunofffromtheroadasquicklyaspossible,
exceptwheresafetyandenvironmentalconcernsdictate
otherwise.
Constructroadsonlywideenoughtohandleequipmentthat
willusetheroad(usually��to�4feettravelwidthforLU
roadsand�6to�0feettravelwidthforMAroads).Narrow
roadsmayneedtobewidenedoncurves,withperiodicpull-
outsforpassing.
Constructaroadright-of-waywideenoughtominimize
shadefromroadsidetreeswheresurfacedrainageisaprob-
lem.Thiswillallowroadbedstodryoutfollowingrainfall.
Inlowlandareas,keeproadsurfacesasclosetoground
surfacelevelaspossible(normallylessthantwofeetabove
theforestfloor).

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Construction

Onsteepgrades,whereinsideditchesarerequired,install
culvertsatspecifiedintervals(Table3)toremovesurface
runoffwithminimalerosion.
Installculvertsorconstructbroad-baseddips(orother
suitabledrainagestructures)sothattheyarelargeenough
andfrequentenoughtoaccommodateexpectedvolumesof
water(Table3).
Coverculvertswithenoughcompactedfilltoprevent
damagebytraffic.
Ensurethatculverts,waterturnouts,andbroad-baseddips
emptyroadrunoffontotheundisturbedforestfloor.
Figure5.Waterturnoutsemptyroadrunoffontotheundisturbed
forestfloor.
Figure6.Broad-baseddipsremoveroadrunoffwhileallowingvehicles
tomaintainnormalspeeds.

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BMPs continued

Stabilization

Protecttheculvertinletwithaheadwallofstablematerial
wherenecessary.Iftheculvertoutletisabovethetoeof
thefill,stabilizefillwithrip-raporothersuitablematerial.
Whereerosionmayoccur,stabilizeexposedmineralsoilwhen
roadconstructioniscompleted.Soilstabilizationmay
includemulching,rocking,seedingwithgrasses,orusing
erosion-resistantfabrics.
UsewaterbarswhenretiringLUroadsandskidtrailsor
wherebroad-baseddipscannotbeconstructed.

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BMPs continued

Table 3: Recommended Maximum Spacing for Drainage Structures

Broad-BasedDipsWaterBars
SlopeandCulvertsandTurnouts
(Percent)(feet)(feet)
�300�45
5�80��5
�0�4080
�5��560
�0��050
�5��540

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Maintenance

Maintain culverts to prevent blockage and resultant flooding.

Minimizeroadgradingandreshapingonhillyormountainous
terrainunlessrequiredtorepairdamagedroadsections.

Avoid

RoadconstructioninsideSMZexceptwherenecessaryto
crossstreams.
Locatingroadsonbroad,flatridgeswherewatertendsto
collect,resultinginpoordrainage.

Traffic on soft roads during wet ground conditions.

Constructingforestaccessroadsthatarewiderorlonger
thannecessaryfornormalforestryactivities.

Emptying road runoff directly into drains.

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Figure�.Waterbarsareusedtoremovesurfacerunoffwhenretiring
limiteduseroads.

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FORESTED WETLAND ROAD

CONSTRUCTION

Roadconstructionforsilviculturalpurposesinjurisdictionalwetlandsdoes
notrequireapermitbecauseofthesilviculturalexemptionunderSec
tion404oftheCleanWaterAct.However,toqualifyforthesilvicul
turalexemption,theroadconstructionmustcomplywiththefollowing
BMPs,(fromCleanWaterSection404ProgramDefinitionandPermit
Exemption,Part�3�.3).

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Federally Mandated BMPs

1. Permanent roads, temporary access roads, and skid trails in waters of the United States shall be held to the minimum feasible number, width, and total length consistent with the purpose of silvicultural operations and local topographic and climatic con-ditions.

2. All roads, temporary or permanent, shall be located sufficiently far fromstreamsorotherwaterbodies (except forportionsofsuch roads which must cross water bodies) to minimize discharges of dredged or fill material into waters of the United States.

3.Theroadfillshallbe bridged, culverted, or otherwise designed
to prevent the restriction of expected floodflows.

4. The fill shall be properly stabilized and maintained to prevent erosion during and following construction.

5.DischargesofdredgedorfillmaterialintowatersoftheUnited
Statestoconstructaroadfillshallbemadeinamannerthat

minimizes the encroachment of trucks, tractors, or other heavy equipment within the waters of the United States (including adjacent wetlands) that lie outside the lateral boundaries of the fill itself.

�6 est ractices anagement

6. Indesigning,constructing,andmaintainingroads,vegetative disturbance in the waters of the United States shall be kept to a minimum.

7. The design, construction, and maintenance of the road crossing shall not disrupt the migration or other movement of those species of aquatic life inhabiting the water body.

8. Borrow material shall be taken from upland sources when-ever feasible.

9. The discharge shall not take, or jeopardize, the continued existence of a threatened or endangered species as defined under the Endangered Species Act, or adversely modify or destroy the critical habitat of such species.

10. Discharges into breeding and nesting areas for migratory waterfowl, spawning areas, and wetlands shall be avoided if practical alternatives exist.

11. The discharge shall not be located in the proximity of a public water supply intake.

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12. The discharge shall not occur in areas of concentrated shellfish production.

13. The discharge shall not occur in a component of the National Wild and Scenic River System.

14. The discharge of material shall consist of suitable material free from toxic pollutants in toxic amounts.

15. All temporary fills shall be removed in their entirety and the area restored to its original elevation.

�8

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AdditionalBMPsarelistedbelowasinterpretationofthe�5
federallymandatedBMPs.

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BMPs

TheheightofbothMAandLUroadsonhighground
shouldnormallybelessthantwofeetabovetheforest

floor.

WhereaMAorLUroadcrossesastreamorslough,or
entersapeatormuckswamp,thefillshouldnotbehigher
thantheroadateitherend,exceptasrequiredbyDHEC
forcrossingnavigablestreams.Normallytheroadheight
shouldbetwotothreefeetabovetheforestfloor,butit
maybehigherinlowareas.
MAroadsatstreamsshouldbebridgedorculvertedwith
permanentstructuresofasizeandfrequencytoallow
expectedflowofwater.Wherefordsareusedinlieuof
bridgesorculverts,theymusthaveadequaterockbasesto
protectthestreambed.
StabilizesoilsaroundeachstructurewhereMAroadscross
intermittentorperennialstreamswhichhaveanaverageannual
flowoffivecubicfeetpersecondorgreater,andwhere
rainwaterrunofffromtheroadwilllikelycauseserious
erosionandstreamsedimentation.
WhereLUroadscrossintermittentorperennialstreams,
temporarybridgesorculvertsofsufficientsizeandfrequency
shouldbeusedtominimizeinterferencewiththeflowofwater.
Whenasilviculturaloperationiscompleted,temporarybridges
andculvertsshouldberemoved,andLUroadscross-ditched
whereneededtoallownormalwaterflow.

�9

P est ractices anagement

Obtainroadbedmaterialfromuplandborrowpitswhenever
possible.Forroadsthatcrosssloughsormuckswamps,
thebasemaybelogsorsandandclay.Logsarepreferable
becausetheyreducetheamountoffillmaterialrequired.
Roadswithonlyasandorclaybasegraduallysettleintothe
peatormuck,andmustbeconstructedhigherinitiallyto
ensureadequatewidth.
Roadsinmuckswamps,headwaterswamps,andblackriver
bottomsmaybeconstructedfromdredgematerialobtained
fromaditchalongtheuppersideoftheroad,thencapped
withfillfromanuplandarea.Continuoussideditchesare
preferred.Theyreducetheimpoundmentofwateronthe
uppersideoftheroad,providedthereareadequateculverts
tomovewaterfromtheuppertothelowerside.Ditch
bottomsshouldfollowsurfacetopographyandculverts
shouldbelocatedinthelowerareas.Suchditchesshould
notbedesignedtocarrywaterformorethanone-fourth
mile.Theymustbeseparatedfromnavigablewaterby
vegetatedfilterstrips.

Ditches should not convert wetlands to uplands.

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BMPs continued

TImber HarvesTIng

xecutinganenvironmentallyresponsibleandeconomically
efficienttimberharvestoperation,especiallyonenearsensitive
sites,requiresathoroughunderstandingoftheland,thetrees,
thecapabilitiesoftheloggerandloggingequipment,andthe
marketsfortimberproducts.Landownersareencouraged
toseektheadviceofalicensedforesterortheSouthCarolina
ForestryCommissiontoplanandexecutetimberharvestscarefully.
TimberharvestingcontractsshouldspecifycompliancewithBMPs.
Harvestingtreesisnotjusttheendofthegrowingcycleofaforest;
itisthestartofthenextgeneration.Manycommercialtreespecies
needexposedmineralsoilandthedirectsunlightofanopenarea
fortheirseedstogerminateandsuccessfullybecomeestablished.
Harvestingoperationsusuallyprovidebothoftheseconditions.To
minimizewaterqualityimpactsofharvesting,thelandownerorhis
agentshouldcarefullyconsiderroadlocation,streamcrossings,and
themethodofregenerationbeforeloggingbegins.
Itisnecessarytoprotectsensitiveareas,planforregeneration,and
considertheareasbeyondtheactualharvestsiteifnegativeenviron
mentalimpactsaretobeavoided.Forinstance,bottomlandhardwood
sites,CarolinaBays,andotherswampsdifferfromuplandforesttypes
inthattheirsoilsarewetformost,ifnotall,oftheyear.Theyare
frequentlyconnecteddirectlytoanaquaticsystem;theyoftenhave
overlandwaterflowfromnearbystreamflooding;andtheymayac
cumulatesediments,nutrients,andpollutantsfromupstreamerosion
andrunoff.Theseareasmayrequirespecialharvestingequipment
and/orspecialharvestingtechniques.

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Water Quality

Theprimarywaterqualityimpactassociatedwithtimberharvesting
isthedegradationofaquatichabitatqualityduetoincreasedsedi-
mentinputsandelevatedwatertemperatures.ThefollowingBMPs
aredesignedtominimizeharvestingimpactsonwaterquality.

Planning

Carefully plan the harvest to minimize the number of stream crossings required.

Identify locations for stream crossings where impacts to the stream are likely to be minimal. Follow all stream crossing BMPs.

Identifyareasthatarethemostacceptablelogdeck
locations(stablesoil).Ifitisnecessarytostabilizeareas
fordecking,limittheamountofareafilledtothesmallest
practicalsize.
IdentifysensitiveareassuchasSMZs,ephemeralstreams,
anderosivesoils.

Execution

Establish SMZs adjacent to all perennial, intermittent streams, and lakes.

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Execution

Takeprecautionstominimizeexcessiveruttinginactive
floodplains,bottomlandhardwoodswamps,anderosive
slopes.Ifsoilsareexcessivelywet,specialtechniquesare
availabletominimizerutting,soilcompaction,and/orinter-
ferencewithnormalflowofwater.
Examplesofthesetechniques:
a.debrisormatsonskidtrails
b.highflotationequipment
c.concentratinglogsinfellingandforwarding
operationstominimizethenumberofskidtrails
d.otherlow-impacttechniques
Ceaseharvestingoperationswhenoverlandwaterflow
impairsbeneficialusesofwaterbodiesdownstreamfrom
theharvestingoperation.Turbidwaterflowingfromthe
siteisausefulindicatorofpossibleimpairmentofbenefi-
cialusesdownstream.*
Layoutskidtrailstominimizewaterqualityimpacts(see
Skid Trailsp.36).
Serviceequipmentawayfromwaterbodiesandwetlands
whenpossible.

Follow-up

Removeanyblockageintendedfortemporarycrossingina
bottomlandhardwoodsloughordrainifitisdirectly
connectedtoaperennialstream.

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Avoid

Locating log decks in sensitive areas.

Skidding beside or within a stream channel.

Skiddingstraightupanddown(perpendiculartothecon-
tour)onsteephillsidesifmineralsoilisexposed.UseBMPs
suchaswaterbars,soilstabilization,etc.,wherethistypeof
skiddingisunavoidable.
Skiddingacrossperennialorlargeintermittentstreams,
exceptoveranadequatelydesignedandconstructedford,
culvert,orbridge(seeStream Crossingsp.�4).*
Skiddingoversmallintermittentorephemeralstreams
duringwetconditionsunlessthebanks(ifpresent)have
beenprotectedbyplacingwoodymaterialinthewater
course(seeStream Crossingsp.�4).*
Removingculvertsfromstreamchannelsfollowinglogging
whenthecrossingwillbeusedwithintenyears.
Usingsoilfill,eitheraloneorincombinationwithwoody
debrisfill,forskidtrailstreamcrossings.
*Braidedstreamsystemstypicallyhavemultiple,interconnected
channelsandahighwatertableformuchoftheyear.Loggingunder
theseconditionsoftenrequirestheuseofspecializedloggingequip
ment.BMPsconcerningstreamcrossingsarenotalwaysapplicable
whencrossingbraidedstreamsduetotheiruniquecharacteristics.
Increasedturbiditydownstreamfromaloggingoperationshould
notbeofadurationormagnitudetoimpairthebeneficialusesof
thewaterbody.Uponcompletionoftheloggingoperation,block
anychannelsthatwerecreatedbyskiddinglogsacrosstheterrain
inbraidedstreamsystems.

On-Site Impacts (Non-Water Quality)

Harvestingsiteswithstable,non-erosivesoilsthatarenotclosely
associatedwithstreamshaslittlepotentialtoimpactwaterquality.
However,loggingduringwetconditionscancauseexposureofmineral
soilandruttingwhichmayresultinerosion,soilcompaction,orpuddling.
Suchsoildisturbancemaycausealossinsiteproductivity.Theseimpacts
canoftenbereducedwithsitepreparationtechniques.Becauserut
tingmayimpactsiteproductivityoncertainsites,landownersshould
considerloggingunderdrierconditionsiftheydonotwishtobear
theexpenseofsitepreparationorskidroadrehabilitation.
Rapidreforestationisaneffectivemeansofimprovingthevisualim
pactofharvestoperations.Regenerationtechniquessuchassingle
treeselection,patchclearcuts,orshelterwoodharvestscanbeusedto
minimizevisualimpact.Thesesystems,however,maybelessefficient
thanclearcuttingforregeneratingthesite,andtheyrequireadditional
loggingentrieswhichcanfurtherimpactsiteproductivity.
Twowaystoimprovetheinitialvisualimpactofaclearcuttingopera
tionare:
�.Leaveastripoftreesalongwell-traveledhighways;
�.Limitthesizeoftheareatobeharvestedatanyonetime.
(Thisisprobablythemosteffectivewaytoreducenegative

visual impact.)

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BMPs

Planning

Whereclearcuttingisthedesiredharvestingmethod,special
emphasisshouldbegiventothetimberharvestplanning
process.Considersurroundinglanduse,wildlifehabitat,and
aesthetics,especiallywhenclearcutsapproach�00acres.

P est ractices anagement

BMPs continued

Planning

Planskidtrailstooccupytheleastamountofareapossibleto
logthesiteeffectively(SeeSkid Trailsp.36).

Execution

Usehighfloatationharvestingequipmentoranotherlow
impactharvestingsystemifexcessingruttingisoccurring
duetowetsoilconditions(seeRuttingp.3�).Bunching
stemsandplacingthemneartheprimaryskidtrailcan
reduceexcessiverutting.Logadryalternativesiteifpossible.
Usewoodydebris,mats,orothertechniquestostabilize
skidtrailsifexcessiveruttingisoccurring.

Take steps to avoid depositing mud on paved roads.

Follow-up

Site prepare to reduce on-site impacts.

Create conditions that are conducive to rapid regeneration.

Cleanupand/orcontainfuelandoilspillsimmediately.
Complywithstateandfederalregulationsconcerning
reportingofspills.
Disposeofoils,lubricants,theircontainersandother
wastesaccordingtolocal,state,andfederalregulations.
Reportanyfuel,oil,orchemicalspillstotheEmergency
ResponseUnitoftheDepartmentofHealthandEnviron-
mentalControlat803-�53-6488.

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Skid Trails

Controlwaterflowonskidtrailswithbroad-baseddips,wing
ditches,orwaterbars.
Skidlogsuphill,whenpossible,sosurfacerunoffwillbedis-
persedasitflowsdownhill.However,skidtrailsshouldnotbe
locatedperpendiculartothecontourunlessappropriateBMPs
areused.
Retireprimaryskidtrailsonerosiveslopesbinstallingwater
barsandseedingthemupponcompletionoflogging.
ConstructbladedskidtrailsaccordingtoLUroadspecifications
exceptforthesloperestrictions.

To reduce harvesting impacts on sites that will not be treated with mechanical site preparation:

Planprimaryskidtrailsonselectivecutssothattheycanbe
usedwitheachsuccessiveharvestofthearea.
Locatepromaryskidtrailssotheyoccupytheleastamountof
areatologthesiteeffectively.
Concentrateskiddingonafewtrailstominimizeoverallsoil
compactiononfinetextured(clayorloamy)soils.

est ractices anagement

Rutting

Duringdryconditions,ruttingoccursmostlyinisolated,moistar
eas,oronprimaryskidtrailswhererepeatedskiddertrafficgradu
allycompactsthesoil.Usuallytheserutsarenotasignificantcon
cern.However,whencertainsoilsaremoistorwet,ruttingcan
beasignificantproblem,especiallyifnaturalregenerationmethods
areplanned.Ruttingisahighlyvisibleimpactoflogging,butthe
effectsofruttingonsiteproductivityarepoorlyunderstoodover
thewiderangeofsoiltypesinSouthCarolina.
Becauseofthepotentialimpactsoncertainsoils,precautions
shouldbetakenduringplanningandconductingtimberharvesting
tominimizedepthofruttingandtheamountofareawithruts.*

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* See glossary for definitions of rutting and excessive rutting.

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R sITe PreParaTIon

apidregenerationofforestlandisbotheconomicallyanden
vironmentallyimportant.Rootsystemshelpstabilizesoils
andtherebyreducetheriskoferosion.Treesalsointercept
waterandimpedestormwaterrunoff.Manysitesrequire
sometypeoftreatmenttoaccomplishquickandeffective
regenerationofthedesiredtreespecies,ortoreducesome

undesired effects of logging.

Priortoartificialregeneration,asitepreparationmethodisusually
chosenthatenhancesseedlingsurvivaland/orcontrolscompeting
vegetation.Sitesmayalsobepreparedsimplytomakeanareamore
amenabletoplanting.
Fornaturalregeneration,certainsitepreparationmethodsmayenhance
sproutingorseedgermination.
Manysitepreparationtechniquesareavailable.Thetechniqueused
dependsonsoils,slope,conditionofthesite,naturalvegetation,
croptreespecies,andcost.Soils,slope,andgroundcoverarethree
principalfactorsthatdeterminethepotentialforerosiononanysite.
Soilswithashallowsurfacelayer(A�)generallyhavelimitedcapac
itytoabsorbwaterandaremorelikelytoerode.Steeperslopes
providerainwaterrunoffmorevelocity,andthusenergy,toerode
soils.Groundcoverhelpsholdsoilinplaceanddissipatessomeof
theenergyofrainfall.
Sitepreparationtechniquescanbegroupedintothreecategories:
mechanical,chemical,andprescribedfire.

est ractices anagement

Mechanical Site Preparationisoftendescribedinterms
ofitsintensity—thedegreetowhichitdisturbsthesoil.Methods
varyfromlowtoveryhighintensity.Highintensityisdefinedas
soildisturbedandexposedonmorethan50%ofthesite.Disking
andbeddingareexamplesofhighintensitymethods.Choppingisa
lowintensitymethod.Somecombinationsofmethods,forexample,
shear-rake-disk,areconsideredmoreintensivebecausetheyexpose
moresoil.Erosionpotentialincreaseswithhigherintensitymeth
ods,especiallyonslopinglands.Highintensitymechanicalmethods
aremostappropriateonflatlandandgentleslopes.Lowintensity
methodsmaybeappropriateonmoderateslopes.
Chemical Site PreparationManyherbicidesareavailable
forpreparingforestsites.Theycontrolmostundesirablevegeta
tioninplace,anddonotdisturbthelitter.Becauseherbicidesare
selective,theprescriptionshouldcarefullyconsiderthevegetation
tobetreated.Mostherbicidesmaybesuccessfullyappliedeither
fromthegroundoraircraft.Whenusedproperly,chancesofoff-site
impactsareminimal.

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Prescribed Fireisoftenusedinconjunctionwithmechanical
orchemicalsitepreparation,butitmaybeusedalone.Aproperly
conductedprescribedburn,whichconsumesaportionofthelitter
withoutalteringthesoil,onlyslightlyincreasesthepotentialforero
sion.Veryhotfireswhichexposemuchmineralsoilonsteepslopes
maysignificantlyincreaseerosionpotential.

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Inordertoidentifymethodsappropriateforcertainsites,percent
slopeisusedinthefollowingguidelines.However,themeasuresof
slopeareonlyguidelinesbecauseotherfactorsmustalsobetaken
intoconsideration.Furthermore,slopeusuallyvariesoverasite
beingreforested.Ifindoubtabouttheappropriatemethodtouse,
seektheadviceofalicensedforesterorotherqualifiedprofessional.

B

BMPs

On slopes 5% or less, any method may be used.

Onslopes6-�0%,intensivemechanicalmethodsshould
followthecontoursoftheland.
Onslopes��-�0%,mechanicalmethods,otherthanchop-
pingshouldfollowthecontoursoftheland.Iferosion
potentialappearshigh,leaveuntreatedstrips5to�0feet
wideapproximately�00feetapart.
Onslopes��-30%,useonlyherbicides,prescribedfire,or
lowintensitymechanicalmethods.
Onslopesgreaterthan30%,useonlyherbicides,handtools,
and/orprescribedfire,butbeawarethatextremelyhot
firesmaysignificantlyincreaseerosionpotential.
Herbicidesandprescribedfireareacceptablesiteprepara-
tionmethodsonallslopesifconductedproperly.
Whereacceleratederosionislikely,usemethodswhich
leaveloggingdebrisandotherlitterscatteredoverthesite.

Minimize moving soil into windrows and piles.

BMPs continued

Breakwindrowstoallowforfirecontrolequipment,wildlife
crossing,anddrainageofsurfacerunoff.
Prepareplantingbedsonlyashighasnecessaryforseedling
survival.
Whenconstructingbedsonslopinglandgreaterthan5%,
followlandcontoursandbreakfrequentlywithinthebeds.
Constructwaterbarsoruseothermethodstoprevent
erosioninfirebreaksandprotectivelinesthathavebeen
pushedaroundherbicideapplicationsites.
Leavevegetationandlimitsoildisturbanceingulliesthathav
stabilizedandarenolongereroding.
Contactalicensedforesterorotherqualifiedprofessionalfor
adviceonstabilizinggulliesthatcontinuetoerode.
Contactalicensedforesterorotherqualifiedprofessional
foradviceonsitepreparationburning.
RefertoStreamside Management Zones(p.5)for
specificrestrictions.
RefertoPrescribed Burning(p.44)andPesticides
(p.46)forspecificguidelinesconcerningburningandpesti-
cideapplication.
Leaveavegetatedbufferstripatleast�0feetwideonedges
ofpublicroadstocatchsoilparticlesandslowrunoff.

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Avoid

Any mechanical methods on slopes greater than 30%.

Intensivemechanicalmethodsonslopesgreaterthan�0%
oronothersiteswithhighpotentialforerosion(consid-
eringsoil,slope,andgroundcover).
Constructingwindrows,onslopesgreaterthan5%,which
willfunnelsurfacerunoffintoperennial,intermittent,or
ephemeralstreams.
Mechanicallypreparingsiteswhenequipmentwillcause
excessivesoildisturbanceduetosaturatedorverywet
soilconditions.

Blocking any drainage with beds, windrows, or similar structures.

Connectingplantingbedstoditchesifjurisdictionalwet-
landswillbeconvertedtouplands.

est ractices anagement reforesTaTIon

R eforestationcanbeaccomplishedeithernaturallyorarti
ficially.Naturalreforestationdependsonseedinplaceon
theforestfloor,seedfromseedtrees,andsproutingofcut
trees.Treesthatreforestasitenaturallyareoftenthebest
suitedforthatparticularsite.Inmanycases,though,past
managementofforestlandnecessitatestheuseofartificial
regeneration.Inothercases,artificialregenerationisusedtofavor
commerciallyvaluabletreespecies.Whenplantingorseedinga
harvestedsite,choosetreespeciesthataresuitedtothatsite.
Whetherasiteisreforestednaturallyorartificially,itisbesttobegin
thenewstandasquicklyaspossible.Anyincreaseinerosion,water
yield,andstormflowcomingfromaloggedsitediminishesrapidly
asthesiterevegetates.

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BMPs

Hand plant steep, erodible sites.

Machineplantonthecontourtoreducetheerosionhazard
onslopesgreaterthan5%.
Consultalicensedforesterforadviceonreforestation
alternatives.

Avoid

Leaving planting bags or other garbage on the site.

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PresCrIbed burnIng

outhCarolinalawrequiresthattheSouthCarolinaForestry
Commissionbenotifiedpriortoburning.Precautionsmust
betakentopreventthefire’sescape.Ensurethattheburn
siteisenclosedbyadequatefuelbreaks;havesufficient
manpower,tools,andequipmentavailabletocontrolthe
fire;andstaywiththefireuntilitissafe.
Prescribedfireisaveryusefulsilviculturaltool.Itcanbe
usedtoprepareasiteforplantingbyreducingloggingdebrisorto
prepareaseedbedforseedfall.Prescribedfirecanalsobeusedlater
inthelifeofaforestforsilviculturalpurposes,toimprovewildlife
habitat,andtoreducethehazardofwildfire.
Studieshaveshownthatproperlyplannedandconductedprescribed
burninghasnosignificantimpactonwaterquality.Mostproblems
associatedwithprescribedburningarearesultofpoorplanningand
changingweatherconditions.Whereaprescribedfirebecomestoo
hot,theentirehumuslayercanbeconsumed,exposingtheunderlying
mineralsoiltoerosion.
Prescribedburningrequiresanunderstandingofweathercon
ditions,fuelconditions,wildfiredanger,smokemanagement,anda
hostofotherfactors.Itshouldonlybeattemptedbyexperienced

personnel.

BMPs

Complywithsmokemanagementguidelines.Smokeshoul
bemonitoredaftertheburnuntilitisnolongerahazard.

Have firefighting equipment readily available.

Timeprescribedfiressothatthemoistureleveloftheforest
floorpreventstheentirehumuslayerfrombeingburned.

Locate firebreaks on the contour as much as possible.

Ongradesover5percentandover�00feetlong,construct
waterbarsinfirebreaklinesatfrequentintervalstoslow
surfacerunoff.
Usehandtoolswhenitisnecessarytotiefirebreaklines
intostreamchannels.

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Avoid

Burningwhenconditionswillcauseafiretoburntoohot
andexposemineralsoil.

Impacting smoke sensitive areas.

Allowinghighintensityfiretoenterfilterstripsorprimary
StreamsideManagementZones(SMZs).
Burningonseverelyerodedforestsoilswheretheaverage
litterduffdepthislessthanone-halfinch.
Constructingwaterbarsinfirebreaklinesthatdivertsurface
runoffdirectlyintostreams.

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ID

PesTICIdes

P est ractices anagement

esticides,includingbothherbicidesandinsecticides,arevaluableP
toolsinmaintainingahealthyforest.Herbicidesareoften
usedtocontrolunwantedvegetationintheestablishmentof
bothnaturalstandsandplantations.Theuseofherbicides,
ratherthanmechanicalmethods,isrecommendedonerod
iblepiedmontandmountainsitestoprotectwaterquality.

B

Insecticidesmaybeusedtocontrolcertaininsectinfestationswhere
outbreaksarelocalized.
Properplanningandconscientiousexecutionoftheplanarethe
keystosafeuseofpesticides.Theplanshouldclearlydelineatethe
areatobetreatedandshouldincludebufferstoprotectbodiesof
waterandneighboringlandowners’property.Theplanshouldalso
specifychemicalstobeused,methodoftreatment,applicationrate,
targetspecies,acceptablewinddirectionsandwindspeeds,and
nearbysensitiveareas.

BMPs

FOLLOWLABELDIRECTIONSandapplicablestateand
federallawsinthestorage,transportation,handling,and
applicationofallpesticides.
ObtainMaterialSafetyDataSheets(MSDS)fromthemanuf-
acturerfortoxicologicalinformationandpersonalsafety
protectionrequirements.
Applyrestrictedusepesticides(RUP)onlyunderthesuperv
sionofacertifiedpesticideapplicator.Informationonthe
certificationprocessisavailablefrom:Departmentof
FertilizerandPesticideControl,�56PooleAgricultural
Center,ClemsonUniversity,Clemson,S.C.�963�.

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BMPs continued

Disposeofpesticidecontainersand/orexcesspesticide
accordingtostateandfederalregulations.
Aerialapplicationshouldonlybedonewhenwindspeeds
are5mphorlessforliquidformulations,and8mphorless
forgranularformulations.Groundapplicationshouldonly
bedonewhenwindspeedsare�0mphorless.
Exceptfordirectedhandequipmentapplications,usecau-
tionwhenwindsareblowingtowardsensitiveareas.Wait
untilwindschangeorusewiderbuffers.
Doallon-sitepesticidehandling,suchastankmixing,away
fromstreams,ponds,anddrainageareas.
Cleanupand/orcontainallpesticidespillsimmediatelyand

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