Nen Abril 20, 2023, in-anunsyo na US Environmental Protection Agency (EPA) so pangipaway na sakey ya iproproponin totontonen unong ed Section 6(a) na Toxic Substances Control Act (TSCA) ya mangisesebel ed maslak ya pangusar na methylene chloride. Inkuan na EPA ya say ag napaneknekan ya risk assessment to parad dichloromethane et lapud saray peligro ya asosasyon na saray trabahador, propesyonal ya ag manguusar (ONUs), saray manbabakal, tan saramay asingger ed panguusar na manbabakal. Naamtaan na Environmental Protection Agency so peligro na makapuy ya epekto ed bunigas na too manlapud pan-inhale tan pakawalaan na methylene chloride ed baog, kaiba lay neurotoxicity, epekto ed altey, tan kanser. Inkuan na EPA ya say iproproponin totontonen to ed panangasikaso na peligro et “maples ya mamawas” ed produksyon, panagproseso tan panagbunog na methylene chloride parad amin ya manbabakal tan maslak ya industrial tan komersyal ya usar, ya maslak ed saratan et sigpot ya nasumpal ed loob na 15 bulan. Inkuan na EPA ya parad maslak ya pangusar na dichloromethane, iproproponin isebel itan. Impanengneng na panagsukimat ya saray alternatibo ed dichloromethane ya mipara so gastos tan inkaepektibo to et kaslakan ya wala. No nipalapag la so iproproponin totontonen ed Federal Register, onggapo so 60-agew a panaon na komento.
Diad silong na draft version na iproproponin totontonen ed silong na TSCA Section 6(b), indetermina na EPA ya say methylene chloride et walaan na agmakatunongan a peligro na pakasakitan na bunigas, antokaman so gastos odino arum niran aliwan risgo, kaiba lay agmakatunongan a risgo ed kondisyon na pangusar (COU) parad saramay naimano ya posiblin naeksperiensya odino mainomay ya naapektoan na peligro na methylene chloride 2020. Pian naekal so agmakatunongan a peligro, irerekomenda na EPA, unong ed Section 6(a) na TSCA:
Ibabaga na EPA ya amin ya TSCA COUs parad dichloromethane (aliwan kaiba so pangusar ed saray pintura tan paint removers, ya mankikimey ya manbibiigan ed silong na TSCA Section 6 (84 Fed. Reg. 11420, Marso 27, 2019)) et sakop na sayan opresi. Unong ed EPA, say TSCA et mangiiter na kabaliksan ed COUs bilang saray iilaloan, kabat, odino makatunongan ya naimano iran sirkumstansya no panon ya say sakey a kemikal et nagawa, naproseso, nabunog, nausar, odino nabantak parad komersyal iran gagala. Say EPA et onkekerew na komento ed publiko nipaakar ed nanduruman aspekto na proposal.
Unong ed sakey ya press release na EPA, say EPA et kinonsulta ed Occupational Safety and Health Administration (OSHA) diad impanggawa na iproproponin totontonen "tan inkonsidera to ray wala lan kakaukolanen na OSHA diad impanggawa na iproproponin proteksion ed saray trabahador." saray kakaukolanen pian naekal iray agmakatunongan a peligro. Saray amo et walaan na sakey taon pian natumbok so WCPP kayari na pangipalapag na EPA ed pinal iran totontonen ed panangasikaso na peligro tan kaukolan dan regular ya bantayan iray pantratrabahoan da pian naseguro ya saray trabahador et ag-onsabi ed methylene chloride, ya nayarin pansengegan na agmakatunongan a peligro.
Say EPA et "manatawag ed publiko ya repasoen so iproproponin totontonen tan mangiter na komento ra." Inkuan na EPA ya “interesado iran maong ya ondengel ed saray opinyon na saray organisasyon ya nakaukolan pian nipaakseb so iproproponin programa nipaakar ed posibilidad tan inkaepektibo na saray iproproponin kakaukolanen ed proteksion na saray trabahador.” Say EPA, et manggawa na open webinar parad saray amo tan trabahador diad ontumbok iran simba, "balet makatulong itan ed siopaman ya manaanap na pakanengnengan ed saray iproproponin regulatory measures pian pantongtongan iray iproproponin plano." .
Ipapasakbay na Bergeson & Campbell, PC (B&C®) so direksion na saray iproproponin EPA ya panangontrol ed methylene chloride tan saray manunan opsyon ed panangontrol. Say iproproponin totontonen na EPA et mitunosan ed saray rekomendasyon to ed iproproponin draft ya totontonen ed panangasikaso na peligro na chrysotile, kaiba lay iproproponin regulatory measures pian nasebel so pangusar, saray manunan alternatibo ed regulasyon parad limitadon panaon ya pangusar ed silong na TSCA Section 6(g) (alimbawa, seguridad na bansa tan kritikal ya imprastraktura) tan iproproponin kaplesan iran limitasyon na pakawalaan na kemikal (EC) ya abeba nen say kaplesan ya limitasyon na trabaho limitasyon na pakapatnagan. Diad leksab, isumaryo mi so pigaran isyu ya nepeg ya ikonsidera na saray membro na regulated community no manpaparaan ira na saray komento na publiko ed saray iproproponin draft rules, tan ipanonot ed balang sakey so kaimportantian na pitongtong ed EPA diad gapo na saray ag-regulated ya inisyatiba pian mangiter na impormasyon nipaakar ed regulatory activity ed saray sirkumstansya. Saray totontonen, kaiba lay TSCA.
Lapud balon direksion na totontonen na EPA ya walay “whole chemicals” ya paraan, agtayo nabigla ya say iproproponin regulatory action na EPA et say “pangisebel ed maslak ya pangusar na dichloromethane ed industriya tan komersyal.” Balet, say EPA et mangiyoopresi na manunan alternatibo ed regulasyon pian naabuloyan so pigaran iproproponin sebel ya pangusar ya mantultuloy base ed panumbok ed WCPP. Sinalambit mi iya lapud ibabaga na Section 6(a) na TSCA ya say EPA et nepeg ya “mangiyaplika na saray kakaukolanen pian naekal iray agmakatunongan a peligro anggad nakaukolan pian say kemikal odino laok et agla mangiter na ontan iran peligro.” No say WCPP ya walay ECEL et manproprotekta ed bunigas tan kaliberliber, unong ya isusulong na EPA, ompatnag ya say pananebel ed pigaran panguusar et onlampas ed “degree of necessity” ya totontonen. Anggano proteksion so WCPP, say walan pananebel ed pangusar na saray manbabakal et makatunongan nin siansia lapud saray manbabakal et nayarin ag makapangipatnag tan makapangidokumento na panumbok ed saray proteksion ed WCPP. Diad biek a dapag, no say pantratrabahoan et makapangipatnag tan makadokumento na panumbok ed saray kakaukolanen na WCPP, sirin et posiblin itultuloy ya abuloyan so ontan ya pangusar.
Bilang kabiangan na saray kakaukolanen na WCPP, inkuan na EPA ya kaukolan toy “panumpal ed Good Laboratory Practice [GLP] 40 CFR Part 792′′. Sayan kakaukolanen et sumlang ed maslak a sagpot ed panag-monitor ed pantratrabahoan ya gagawaen unong ed saray estandarte na Industrial Hygiene Laboratory Accreditation Program (IHLAP) ya iilaloan na EPA parad panag-testing na GLP parad panag-testing ed pantratrabahoan. mipara ed testing order ya impaway nen 2021, balet aliwan say estandarten consent order to Singa bilang, say EPA TSCA Section 5(e) order template et mangibabagan onggendan ed Section III.D:
Balet, ag nakaukolan so panumbok ed TSCA GLP ed sayan balon seksion na Chemical Exposure Limits, ya saray paraan na panagsukimat et na-validate na sakey a laboratoryo ya akreditado na: American Industrial Hygiene Association (“AIHA”) Industrial Hygiene Laboratory Accreditation Program (“IHLAP”). odino arum nin mipadparan programa ya inaprobaan na EPA.
Say EPA et kinmerew na komento ed saray espisipikon aspekto na iproproponin totontonen, ya inrekomenda na B&C ya ikonsidera na saray posiblin apektadon partido. Singa bilang, pantotongtongan na EPA so autoridad ed silong na TSCA Section 6(g) ya mangiter na time-limited exemptions parad pigaran kondisyon na pangusar a singa say civil aviation, tan ibabaga na EPA ya say panumbok ed saray iproproponin kakaukolanen et “makadisturbo a maong ed...kritikal ya imprastraktura.” “Iimanoen mi ya sayan waiver et mangilaktip ed panumbok ed WCPP Ontan met, no say WCPP et proteksion tan say pasilidad et makatulok ed WCPP (alimbawa, chronic non-cancerous ECEL 2 parts per million (ppm) tan short term exposure limit (STEL) 16 parts per million), say termino et ompatnag ya onlampas ed saray kakaukolanen ed proteksion ed bunigas tan kaliberliber Manisia kamin usaren so proteksion ed proteksion kulang pian naresolbe so peligro tan say pangisebel et makadisturbo ed saray importantin sektor (alimbawa, depensa, aerospace, imprastraktura). makapasagyat ed amin, balet diad opinyon mi, agto naabot so ganggan na Section 6 na EPA 'T.
Say EPA et angitarok na 2022 ya papel ya say titulo to et “Evaluation of Alternatives to the Use of Dichloromethane” (reference 40 ed say iproproponin ganggan) diad interon iproproponin ganggan. Base ed sayan assessment, inkuan na EPA ya “akabiig na saray produkto ya walaan na pigaran endpoint hazard screening ratings ya abeba nen say dichloromethane tan pigaran ingredients ya walaan na hazard screening ratings ya mas atagey nen say dichloromethane (ref. 40)”. Diad panaon na sayan komentaryo, ag ni in-upload na EPA iyan dokumento ed Rulemaking Checklist, nisay ginawa na EPA ya available ed online Health and Environment Research (HERO) database to. No ag-usisaen iray detalye na sayan dokumento, ag-naseguro so inkasusto na saray alternatibo parad kada pangusar. Saray alternatibo ed paint stripping et nayarin ag-onkiwas a singa saray solvent, a singa saramay uusaren ed panaglinis na saray sensitibon elektronikon kabiangan na eroplano.
Sinalambit mi so kakulangan na dokumentasyon ed tagey lapud saray organisasyon ya apektado na iproproponin ban na EPA et kaukolan da iyan impormasyon pian naamtaan so teknikal a posibilidad na saray alternatibo, nasuri iray posiblin peligro na matukoy iran alternatibo (ya nayarin manresulta ed arapen ya regulatory action na TSCA), tan makapanparaan parad opinyon na publiko. . Naimano mi ya pantotongtongan na US EPA so ontan iran “alternatibo” ya isyu diad iproproponin totontonen to nipaakar ed chrysotile, ya kaiba lay getma na US EPA ya isebel so pangusar na chrysotile ed saray diaphragm ya uusaren ed industriya na chlor-alkali. Inaksobi na EPA ya “saray alternatibon teknolohiya parad asbestos-containing diaphragms ed produksyon na chlor-alkali et walaan na atagey a konsentrasyon na perfluoroalkyl tan polyfluoroalkyl substances (PFAS) no ikompara ed karakel na PFAS compounds ya walad asbestos-containing diaphragms,” balet agto ni ikompara iray posiblin peligro tan peligro na saray alternatibon peligro na saray alternatibon peligro.
Nilikud ed saray isyu ed panangasikaso na peligro, manisia kami ya say impangusisa na US Environmental Protection Agency ed saray posiblin peligro ya misiglaotan ed dichloromethane et wala ni ray baleg ya gap ed ley. Unong ed apantongtongan ed memo tayo nen Nobyembre 11, 2022, say EPA et naynay ya manutukoy ed pangusar to ed sakey a dokumento nen 2018 ya say titulo to et “Applying Systematic Analysis to TSCA Risk Assessment” (“2018 SR Document”) bilang basiyan ed pangipaakseb tod saray obligasyon to. Say kakaukolanen et manguusar na sankaabigan ya scientific data tan scientific evidence ya akasulat ed Section 26(h) tan (i) na TSCA. Singa bilang, ibabaga na EPA ed iproproponin totontonen to nipaakar ed methylene chloride ya:
Ipapasen na EPA ya say dichloromethane ECEL so sankaabigan ya siensia ya walad silong na TSCA Section 26(h) lapud nanlapud impormasyon ya naala ed 2020 dichloromethane risk assessment, ya resulta na sigpot a sistematikon panagsukimat ya ginawa. saray eksaminasyon pian naamtaan so antokaman ya makapuy ya epekto ed bunigas. [underline]
Unong ed insulat mi la, inrepaso na National Academies of Sciences, Engineering and Medicine (NASEM) so 2018 SR document base ed kerew na EPA tan nankonklusyon ira:
Say paraan na OPPT ed sistematikon repaso et ag suston mangipapatnag na katuaan, [tan] nepeg ya ikonsidera lamet na OPPT so paraan to ed sistematikon repaso tan ikonsidera iray komento tan rekomendasyon ya walad sayan report.
Napanonot ed saray manbabasa ya say TSCA Section 26(h) et mankaukolan ed EPA ya manggawa na saray desisyon unong ed sankaabigan ya siensia unong ed TSCA Sections 4, 5, tan 6, ya mangilaktip ed saray protocol tan paraan a singa say sistematikon panagrepaso. Niarum ni, say impangusar na EPA ed 2018 SR document diad pinal ya dichloromethane risk assessment to et mangiiter met na panduaruwa ed panumbok na EPA ed saray kakaukolanen ed ebidensya na siensia ya akasulat ed Section 26(i) na TSCA, ya inklasipika na EPA bilang “systematic analysis approach” parad ebidensya odino diad deterministikon paraan. …”
Duaran totontonen ya iproproponin EPA ed silong na TSCA Section 6(a), salanti, say Chrysotile tan Methylene Chloride, so angiletneg na saray totontonen parad saray iproproponin totontonen na EPA ed panangasikaso na peligro parad nakekeraan ya 10 manunan kemikal ya ipapasen na EPA ya mangiiter na agmakatunongan iran peligro. Wala ray ideya ya nausar ed pinal ya panangusisa ed peligro. Saray industriya ya manguusar ed sarayan substansya et nepeg ya manparaan parad onsabin ban, WCPP, odino time-limited exemption ya mankaukolan na panumbok ed WCPP. Irerekomenda na B&C ya repasoen na saray stakeholders so iproproponin totontonen ed methylene chloride, anggano ag-uusaren na saray manbabasa so methylene chloride, tan mangiter na matukoy iran komento, ya bibidbiren dan saray iproproponin opsyon ed panangasikaso na peligro parad methylene chloride et posiblin magmaliw a kabiangan na arum niran estandarte na EPA ed arapen. totontonen. Saray kemikal ya walay pinal ya panangusisa ed peligro (alimbawa, 1-bromopropane, carbon tetrachloride, 1,4-dioxane, perchlorethylene tan trichlorethylene).
Disclaimer: Lapud inkalapagan ya inkagawa na sayan update, say impormasyon ya inter dia et nayarin ag-onaplika ed amin a situasyon, tan ag-itan nepeg ya gawaen no anggapoy espisipikon legal ya simbawa base ed partikular a situasyon yo.
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