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

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5. Include in label instructions a restricted entry interval of 4 hours when dichlorvos isused for fumigation of glasshouses and similar plant production facilities.6. In order to minimise risk to terrestrial and aquatic species from direct spray or spraydrift and to reduce other risks to the environment from the use of dichlorvos, includeprecautionary statements on labels indicating risks involved in specific uses.7. Amend product labels to clearly state that dichlorvos is to be used only on stored cerealgrains, since the risks of human dietary exposure are unknown when dichlorvos isapplied to other stored grains such as pulses.8. For consistency of label instructions across dichlorvos products, amend the productlabels describing use on silos or grain silos to specify location for use as ‗empty grainsilos‘.9. As a consequence of the proposed finding of the review, continued use of or any otherdealing with the product Sureguard Pest Strip Household Insecticide (APVMA productcode 45596) is likely to have a harmful effect on human beings. The registration of thisproduct lapsed, effective from 1 July 2007. Normally a two-year sales period is allowedafter product registrations lapse. The APVMA proposes that, for Sureguard Pest StripHousehold Insecticide, the two-year sales period will be stopped at the finalisation ofthe review.If these proposals are carried through, the remaining use of dichlorvos formulations for whichthere is a New Zealand equivalent will be:Manual treatment of grain storage containers using 50 g/kg aerosol as long asoperators wear elbow length butyl rubber gloves, chemical resistant clothing and afull face piece respirator and don‘t enter storage structure during treatment or for 4days afterwards;Fogging/misting of commercial installations such as abattoirs and meat works,wineries, food warehouses, mills and empty grain silos using 50 g/kg aerosols withfixed installation equipment, provided operators wear PPE comprising elbow lengthbutyl rubber gloves, overalls and a half face piece respirator with combined gas/dustcartridge when changing cylinders and provided operators do not enter theinstallation for 4 days post-treatment;Fogging/misting of commercial glasshouses containing ornamentals using 50 g/kgaerosols with fixed installation equipment, provided operators wear PPE comprisingelbow length butyl rubber gloves, overalls and a half face piece respirator withcombined gas/dust cartridge when changing cylinders and provided operators do notenter the installation for 4 hours post-treatment;Outdoor use of 50 g/kg aerosol to treat farm machinery or wasp nests as long asoperator wears elbow length butyl rubber gloves, chemical resistant clothing and afull face piece respirator;Outdoor use of 500 g/l EC to treat bee or wasp nests if gloves and overalls are worn.United StatesStatusUSEPA reregistration eligibility document (RED) completed, July 2006Dichlorvos reassessment – application Page 416 of 436
Current usesFormulations:Methods of Application:Use Sites:Granules for bait, liquid, resin impregnated, ready to use spraysand foggers.Applied with ready to use aerosol spray cans, spray equipment,wall mounted foggers, and through slow release fromimpregnated materials, such as resin strips and pet collars.DDVP is registered to control insect pests in agricultural sites,commercial, institutional and industrial sites; in and aroundhomes; and on pets. DDVP is also used in greenhouses; mushroomhouses; storage areas for bulk, packaged and bagged raw andprocessed agricultural commodities; foodmanufacturing/processing plants; animal premises; and non-foodareas of food-handling establishments. It is also registered fordirect dermal pour-on treatment of cattle and poultry. DDVP is notregistered for direct use on any field or greenhouse growncommodities.Use% of amount used in UScommodities in bulk storage,54%distribution warehouses and processingplantsLivestock and poultry 28%Pest control operator/structural use 15%In the US, continued use is permitted as follows:Fogging glasshouses not containing food commodities.Remote fogging equipment or brush-on coarse spray of mushroom houses underspecified conditions of crop development.Remote fogging or misting of food-handling establishments (including theatres, foodprocessing platns, infustrial plants and warehouses) when not in operation, providedfood is removed and food handling equipment is covered.Crack and crevice spraying in food-handling establishments.Spot treatment by spraying or paint brush and fogging or misting of non-food areasof food-handling establishments.Localised spraying in bulk food storage or manufacturing areas, provided the food isnot directly contaminated.Spraying or fogging of farm buildings;Pest strips may be used in animal buildings and milk rooms, provided food andmilking equipment is not contacted directly;Fine spray may be used to treat feed lots, stockyards etc;Specified applications direct to farm animals are permitted;Spray or fogging of outdoor public areas is permitted, although not by hand-heldfoggers.Dichlorvos reassessment – application Page 417 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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With full-body chemical resistant c
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Appendix 4:Occupational Exposure Es
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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 and 412: Appendix K: Overseas regulatory act
Page 413 and 414: Product Use Further details ofuseSu
Page 415: Risk assessment identified concerns
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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