Application for the Reassessment of a Hazardous Substance under ...

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Outcome of risk assessment for formulations with an „equivalent‟ in NewZealand 11 :Product Use Further details ofuse50 g/kgaerosolIndoor: Treatment ofindustrial anddomestic premises,stored productfacilities (includingfarm machinery andsilos), greenhouses,farm machinery,storage bins. Alsomushroom housesand in plantfumigation chambers,although these usesare not included onthe product label. Theproduct is forprofessional use only,Outdoor: treatmentof farm machineryand wasp nests.Operator entersfacility to sprayusing a manualpressure gunFixed installation,which may beoperated remotelyusing a manual orprogrammed timereleaseManual, but remote,treatment of grainbins, silos andsimilar sealedstorage containersResult ofreassessmentMOE exceeded, due toexposure duringtreatment and whenchanging cylindersExposure acceptablewith controls in placeExposure acceptablewith controls in placeExposure acceptablewith controls in placeProposed actionDiscontinue this use,.Maintain use as long asoperator wears elbowlength butyl rubbergloves, chemicalresistant clothing and afull face piecerespirator and doesn‘tenter storage structurefor 4 days posttreatment(exceptglasshouses for whichrestricted entry periodis 4 h).Maintain use as long asoperator wears elbowlength butyl rubbergloves, chemicalresistant clothing and afull face piecerespirator and doesn‘tenter storage structureduring or for 4 dayspost-treatment.Maintain use providedoperators wear PPEcomprising elbowlength butyl rubbergloves, chemicalresistant clothing and afull face piecerespirator.1140 & 500g/l ECTreatment of grainAutomatic sprayingof grain onconveyorMOE exceededprimarily duringmixing/loading, sincetreatment of grain isautomatic.Discontinue this use.500 g/l EC Surface spray inhousesProfessional useonly, most likely byhand-held sprayer,knapsack sprayer,or a hand wandsupplied via a hosefrom a vehiclemountedspray tankand pump.Exposure from treatingand mixing/loadingeven one house leads toMOE exceedanceDiscontinue this use11 Dual formulations not registered in New Zealand are excluded from this table.Dichlorvos reassessment – application Page 412 of 436
Product Use Further details ofuseSurface spray in other Professional useindoor situations only, most likely byincluding animal hand-held sprayer,housing, milk and knapsack sprayer,meat processing or a hand wandfacilities,and grain supplied via a hosestorage structures from a vehiclemountedspray tankand pump.Result ofreassessmentExposure from treatingand mixing/loadingleads to MOEexceedanceProposed actionDiscontinue this useSpace spray, inindoor situationsincluding stables andpiggeries factories,stores, mills, abattoirsand wineries. tobaccostores, warehouses,and glass- andmushroom houses.Application ratesvary with location.Operators wouldprobably use a highpressure hand wandin conjunction witha vehicle-mountedspray tank andpump.Exposure from treatingand mixing/loadingleads to MOEexceedanceDiscontinue this useFog or mist stables,piggeries, abattoirs,wineries, factories,stores, mills andwarehouses tobaccostores, warehouses,glass- and mushroomhousesApplication ratesvary with location.Foggers or mistersmay be portable orstationaryEven with stationaryfoggers/misters,exposure duringmixing/loading is likelyto lead to MOEexceedanceDiscontinue this useSpace spray, fog ormist garbage dumps,beach, picnic andrecreation areasMOE exceeded atexpected work ratesDiscontinue this use inabsence of moredetailed information onwork rates/exposure.Volatilise from‗wooden boards‘ intobacco stores,warehouses,,glasshouses andmushroom housesUndiluted productis poured ontowooden boards andallowed toevaporateMOE exceeded forlarger buildingsDiscontinue this useApplication bywatering can indomestic situationsMOE exceeded atexpected work ratesDiscontinue this use inabsence of moredetailed information onwork rates/exposure.Use as a liquid baitby mixing with sugarwaterApplication eitherby surface spray orpaint brushMOE exceeded atexpected work ratesDiscontinue this useApplication to beeand wasp nestsOutdoor applicationusing low-pressurehand wandExposure acceptablewith controls in placeAcceptable if glovesand overalls wornDichlorvos reassessment – application Page 413 of 436
Page 1 and 2:
Application for the Reassessment of
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6.1 Evaluation of options to streng
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EXECUTIVE SUMMARYIn briefERMA New Z
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Aerosol containing 50 g/kgdichlorvo
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ERMA New Zealand‘s recommendation
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26 - 29Outdoor public space usage30
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Substance details1-8,11-16,20-25,30
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1.2.3 In 2008, the Environmental Ri
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Table 1. Dichlorvos-containing subs
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public environments and use for bio
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available to it. In preparing this
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3.3 International regulatory positi
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3.6 Classification3.6.1 The HSNO cl
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Hazard Class /SubclassClassificatio
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Hazard Class /SubclassClassificatio
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Rates:Fogging: 13 ml / litre (water
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BV2 SurfaceInsecticideBV2 SurfaceIn
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Table 7.Dichlorvos outdoor and indo
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Scenario Crop/Use Method Rate Appli
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humidity conditions. The higher res
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4.3 EnvironmentIdentification of ad
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4.3.9.3 Aquatic environment - Groun
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is considered to be highly improbab
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RiskGroupRQ range Level of risk Use
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RiskGroupRQ range Level of risk Use
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assessment, as the Use Scenario inc
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Nonnegligible1 < RQ < 10Nonnegligib
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Table 12.LifecycleStageImport,manuf
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LifecycleStageUse -bystanderUseScen
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Table 13.Identification of benefici
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value that can be attributed to dic
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outbreak, MAF‘s ability to demons
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the duty of the Crown is not merely
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5.1.7.1 J. Hicking stated that dich
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Table 14. Comparative of hazard cla
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Crop Pest Active ingredient Preharv
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Crop Pest Active ingredient Preharv
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SECTION 6- PROPOSALS TO MANAGE RISK
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Assessment was carried out with spe
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6.1.11 Controls to protect bystande
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Table 16Effect of additional contro
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Use Scenario Receptor Level of Risk
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have, and notes the following as ar
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Table 18Summary of benefits associa
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UseScenariosAssessment ofEffectOutc
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Substance detailsHSR000126DDVPInsec
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Table 22.there are no practicable r
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7.4 Preliminary Recommendations7.4.
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method and LOQ)Water (principle ofm
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Appendix B: Environmental Fate of d
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Bioconcentration factor Gnathopogon
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Table C.2:Scenarios used in exposur
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Scenario 3: Vegetables - 1 applicat
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FIELD AND STANDARD POND HALFLIFE VA
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insectivorous bird7 Passionfruit Sm
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4 Leafyvegetables(BBCH ≥50)4 Leaf
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summer)7 passionfruit(BBCH 10-19)7
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Ground (lowboom)0.03 0.03 1.07 1.07
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Appendix D: Ecotoxicity of dichlorv
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ioaccumulationClearance timeLevel o
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Table D.5:Toxicity to terrestrial i
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Appendix E: Risk Assessment: Enviro
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Aquatic organsimsTable E.3:Environm
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12345Crop type Table I.1 (Annex 1)
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7 passionfruit(BBCH 20-39)7 passion
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Fruit (tree) 2052 70759 >50Passionf
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Appendix F: Human Toxicity of dichl
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CONTENTS:Title Page 11 Purpose 2Con
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2 SUBSTANCE IDENTIFICATIONIUPAC nam
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However, dichlorvos has genotoxic p
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4 ABSORPTION, DISTRIBUTION, METABOL
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aerosol cans (230-330 g dichlorvos)
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4.3 Metabolism:found in tissues of
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dose of 1.0 mg/kg bw, a single gava
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eports. LD 50 = 46.4 mg/kg b.w. is
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6 ACUTE DERMAL 6.1HSNO Classificati
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7 ACUTE INHALATION 6.1HSNO Classifi
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measured and it was not possible to
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8 SKIN IRRITATION 6.3 & CORROSION 8
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9 EYE IRRITATION 6.4 & CORROSION 8.
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10 RESPIRATORY SENSITISATION 6.5AHS
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Justification for Classification: U
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12 MUTAGENICITY 6.6HSNO Classificat
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ERMA New Zealand CONFIDENTIAL Repor
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The ATSDR (1997) reported:“Dichlo
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•ATSDR (1997): http://www.atsdr.c
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13 CARCINOGENICITY 6.7HSNO Classifi
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fibroadenomas were observed in 6 (1
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• Sex/Numbers:• Test material:
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The NTP Peer Review concluded that:
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concurrent studies for comparison w
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The APVMA (2008a) reported a chroni
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was exposed. The estimated daily in
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14 REPRODUCTIVE TOXICITY 6.8HSNO Cl
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ppm during premating days, signific
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Toxicology, Chemistry and Life Scie
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addition, there was an increase in
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• Maternal toxicity NOAEL =• Ma
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Research Triangle Park, North Carol
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16 REPRODUCTIVE OR DEVELOPMENTAL TO
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17 SPECIFIC TARGET ORGAN TOXICITY 6
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There was a significant dose-relate
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KEY STUDY:• Type of study:• Spe
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BACKGROUND:The APVMA (2008a) also r
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cholinesterases can only be estimat
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Ltd, Sittingbourne Research Center,
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23 OTHER POTENTIAL TOXIC ENDPOINTS2
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―Results“Mortalities and clinic
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1984). QA study. Study conducted ac
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“No information was located on im
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“Comment: These incidents clearly
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25 ACCEPTABLE OPERATOR EXPOSURE LEV
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to pretreatment activity). When the
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cholinesterase inhibition in health
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protect agricultural workers who ha
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Wash: refers to skin washes; Dressi
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Hazard Class/SubclassHazardclassifi
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Hazard Class/SubclassHazardclassifi
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REFERENCES:APVMA, 2008a. ―DICHLOR
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Appendix 1:APVMA - Summary of bench
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“Inhalational NOEL for Occupation
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activity). In fact, treatment was s
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LAST PAGEDichlorvos reassessment -
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Dichlorvos:Occupational, Bystander,
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CONTENTS:Title Page 11 Purpose 2Con
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3ACTIVITY SCENARIOS3.1 Table (I) su
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access of bystanders to treated are
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can reduce dermal exposures to mixe
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contaminated with, respectively 0.0
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The modelling is based upon dischar
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Table II: Occupational Exposure Est
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Table III: Occupational Exposure Es
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Operation / RPE / PPETable IV: Occu
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1.25L product/ha; work rate, 1.25 h
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Application: Air-hose RPE + chem. r
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Application: Half-face RPE + overal
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P for RPE (% penetration): none, 1
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Table X: Occupational Exposure Esti
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provided: work day exposure is limi
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5POST-APPLICATION OR RE-ENTRY WORKE
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D = DFR x TC x DA x WR x AR x P / B
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Re-entry into out-door crops (Scena
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Re-entry into treated glasshouses d
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acceptable 240 minutes after applic
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Re-entry into treated glasshouses u
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Table XVII: Re-entry into glasshous
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lowest use rate (52 mg/m 3 ; 1300g
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DA = percentage dermal absorption [
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Re-entry into treated enclosed indu
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nature of the building itself, not
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Conclusions on re-entry worker expo
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6BYSTANDER & RESIDENT EXPOSURE & RI
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Children’s incidental ingestion o
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Table XX: Spray driftExposure throu
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Exposure through contactwithcontami
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Conclusions on bystander and reside
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Table XXIII: Dichlorvos Use Scenari
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mixing/loading. Mixing/loading fogg
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7.23 Re-entry for ventilation of in
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REFERENCES:APVMA, 2008a. ―DICHLOR
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Appendix 1:Occupational Exposure Es
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FactorExposure (μg/kg a.i. handled
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Inhalation exposure from cylinder c
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[0.01875 x {(0.018 x 0.05) + (2.68
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With half-face respirator (protecti
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Page 363 and 364: Appendix 4:Occupational Exposure Es
Page 365 and 366: With overalls and gloves (protectio
Page 367 and 368: The Dermal Exposure (D) is 2.06 μg
Page 369 and 370: TTR = turf transferable residues -
Page 371 and 372: F = fraction of residue retained on
Page 373 and 374: TTR = transferable residues - the E
Page 375 and 376: Public Space ApplicationsScenario (
Page 377 and 378: ERMA New Zealand‟s comment on the
Page 379 and 380: Enclosed SpaceAgricultural UseOutdo
Page 381 and 382: Appendix H: Qualitative Descriptors
Page 383 and 384: 1.3. The likelihood applies to the
Page 385 and 386: Appendix I: Data from which classif
Page 387 and 388: Endpoint Units * Dichlorvos Propoxu
Page 389 and 390: Toxicity mixture calculationsSubcla
Page 391 and 392: Subclass 9.3 -Ecotoxicity to terres
Page 393 and 394: Table J.1:Existing controls for dic
Page 395 and 396: TrackingcontrolsIdentification cont
Page 397 and 398: Table J.2:Summary of default contro
Page 399 and 400: Hazardous Substances (Classes 1 to
Page 401 and 402: Hazardous Substances (Classes 6, 8,
Page 403 and 404: Hazardous Substances (Classes 6, 8,
Page 405 and 406: (a) means piping that—(i) is conn
Page 407 and 408: Code I29 Regs 51, 52 Signage requir
Page 409 and 410: Non-HSNO Act controlsAgricultural C
Page 411: Appendix K: Overseas regulatory act
Page 415 and 416: Risk assessment identified concerns
Page 417 and 418: Current usesFormulations:Methods of
Page 419 and 420: CanadaStatusPMRA are undertaking a
Page 421 and 422: Appendix L: Parties consulted durin
Page 423 and 424: Animal Products Act 19995. The purp
Page 425 and 426: 14. Regulatory control of these pro
Page 427 and 428: Zealand‘s trade in primary produc
Page 429 and 430: processed and stored. It employs ve
Page 431 and 432: may be taken to risk management in
Page 433 and 434: Appendix A• Agricultural Compound
Page 435 and 436: Appendix O: ReferencesACVM (2010) h
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