Thaum Lub Plaub Hlis 20, 2023, Lub Chaw Tiv Thaiv Ib Puag Ncig Tebchaws Meskas (EPA) tau tshaj tawm txoj cai txwv tsis pub tsim khoom, ua tiav, thiab faib khoom lag luam ntawm methylene chloride. EPA siv nws txoj cai raws li Tshooj 6 (a) ntawm Txoj Cai Tswj Xyuas Cov Tshuaj Lom (TSCA), uas tso cai rau lub koom haum tsim cov tshuaj no txwv tsis pub siv. Kev pheej hmoo tsis tsim nyog ntawm kev raug mob lossis qhov xwm txheej. Methylene chloride feem ntau yog siv ua cov kuab tshuaj hauv cov nplaum thiab cov sealants, cov khoom lag luam tsheb, thiab cov xim thiab cov tshuaj pleev xim, thiab kev lag luam xws li tsheb, tshuaj, thiab tshuaj lom neeg tuaj yeem cuam tshuam los ntawm txoj cai no.
Daim ntawv thov ntawm EPA hu kom txwv tsis pub siv methylene chloride hauv feem ntau ntawm kev siv hauv kev lag luam thiab kev lag luam. Daim ntawv thov no suav nrog kev zam, feem ntau yog tshem tawm 10 xyoo ntawm cov xim thiab cov tshuaj pleev xim siv hauv kev lag luam dav hlau kom tsis txhob muaj kev puas tsuaj loj rau kev ruaj ntseg hauv tebchaws thiab cov khoom siv tseem ceeb. EPA kuj tau nthuav dav qhov kev zam no rau NASA siv dichloromethane thaum muaj xwm txheej ceev hauv qee qhov xwm txheej tseem ceeb lossis tseem ceeb uas tsis muaj lwm txoj hauv kev nyab xeeb dua lossis kev lag luam.
Lub koom haum txoj kev thov kuj tseem yuav tso cai rau kev siv dichloromethane los tsim hydrofluorocarbon-32 (HFC-32), ib yam khoom uas tuaj yeem siv los pab txhawb kev hloov pauv los ntawm lwm cov HFCs uas tau thov tias muaj peev xwm ua rau lub ntiaj teb sov dua, txhawb nqa EPA txoj kev siv zog los txo cov HFCs. raws li US Innovation and Manufacturing Act ntawm 2020. Txawm li cas los xij, lub koom haum yuav xav kom cov chaw tsim khoom dav hlau pej xeem, NASA, thiab HFC-32 ua raws li txoj kev npaj tiv thaiv tshuaj methylene chloride hauv chaw ua haujlwm uas suav nrog cov kev txwv kev raug mob thiab kev saib xyuas kev raug mob cuam tshuam.
Thaum txoj cai lij choj tau tshaj tawm hauv Federal Register, EPA yuav lees txais cov lus tawm tswv yim rau pej xeem rau 60 hnub ntawm rules.gov/docket/EPA-HQ-OPPT-2020-0465.
Thaum hnub Tuesday, Tsib Hlis 16, 2023, Lub Chaw Tiv Thaiv Ib Puag Ncig ntawm Tebchaws Meskas (EPA) tau tshaj tawm ib daim ntawv qhia txog txoj cai uas tau thov kom hloov kho EPA cov kev cai uas siv Txoj Cai Tswj Xyuas Cov Tshuaj Lom (TSCA). EPA tswj hwm TSCA Chemical Registry, uas teev txhua yam tshuaj uas paub tias muaj nyob hauv Tebchaws Meskas. Raws li TSCA, cov chaw tsim khoom thiab cov neeg xa khoom tuaj yuav tsum xa cov ntawv ceeb toom ua ntej rau cov tshuaj tshiab tshwj tsis yog tias muaj kev zam (piv txwv li kev tshawb fawb thiab kev txhim kho) siv tau. EPA yuav tsum ua tiav kev ntsuam xyuas kev pheej hmoo rau cov tshuaj tshiab ua ntej tsim khoom lossis xa khoom tuaj. Txoj cai tam sim no qhia meej tias EPA yuav tsum ua tiav kev ntsuam xyuas kev pheej hmoo lossis pom zoo rau daim ntawv ceeb toom zam rau 100 feem pua ​​​​​​ntawm cov tshuaj tshiab ua ntej cov khoom tuaj yeem nkag mus rau hauv kev ua lag luam, raws li xyoo 2016 TSCA kev hloov pauv.
Thaum Lub Plaub Hlis 21, 2023, Lub Chaw Tiv Thaiv Ib Puag Ncig Tebchaws Meskas (EPA) tau tshaj tawm tsab ntawv qauv Txoj Kev Tiv Thaiv Kev Ua Phem Yas Hauv Tebchaws uas yuav muaj kev cuam tshuam loj rau cov zej zog uas raug tswj hwm suav nrog kev lag luam ntim khoom, cov khw muag khoom, cov chaw tsim khoom yas, kev tswj hwm cov khib nyiab khov kho thiab cov chaw rov ua dua tshiab, thiab lwm yam. Raws li tsab ntawv qauv txoj kev npaj, EPA lub hom phiaj yog tshem tawm kev tso cov yas thiab lwm yam pov tseg hauv av mus rau hauv ib puag ncig los ntawm xyoo 2040 nrog cov hom phiaj tshwj xeeb hauv qab no: txo kev ua qias tuaj hauv kev tsim cov yas, txhim kho kev tswj hwm cov ntaub ntawv tom qab siv, tiv thaiv cov khib nyiab thiab micro-/nanoplastics kom tsis txhob nkag mus rau hauv cov dej, thiab tshem tawm cov khib nyiab uas khiav tawm ntawm ib puag ncig. Ntawm cov hom phiaj no, EPA txheeb xyuas ntau yam kev tshawb fawb thiab kev cai lij choj uas tab tom txiav txim siab. Ntawm cov kev cai lij choj uas tab tom txiav txim siab, EPA tau hais tias nws tab tom kawm cov cai tshiab raws li Txoj Cai Tswj Xyuas Cov Khoom Lom Zem rau cov chaw rov ua dua tshiab uas siv pyrolysis los ua cov khoom siv raw rov qab los ua cov yas rov ua dua tshiab. Lub koom haum kuj tseem tab tom hu kom pom zoo rau Basel Convention, uas Tebchaws Meskas tau pom zoo tab sis tsis tau pom zoo hauv xyoo 1990, ua lwm txoj hauv kev los daws qhov teeb meem thoob ntiaj teb ntawm cov khib nyiab yas.
Thaum Lub Kaum Ib Hlis 16, 2022, Lub Chaw Tiv Thaiv Ib Puag Ncig ntawm Tebchaws Meskas (EPA) tau thov kom nce nws cov nqi tam sim no ntawm Txoj Cai Tswj Xyuas Tshuaj Lom thiab Kev Tswj Xyuas (TSCA), qee qhov yuav ntau dua ob npaug. Daim Ntawv Ceeb Toom Ntxiv ntawm Cov Cai Tsim Kho no hloov kho qhov kev thov ntawm EPA, uas siv tau txij Lub Ib Hlis 11, 2021, kom nce cov nqi ntawm TSCA feem ntau yog los kho rau kev nce nqi. TSCA tso cai rau EPA them tus nqi rau cov chaw tsim khoom (suav nrog cov neeg xa khoom tuaj) rau cov haujlwm ntawm lub koom haum raws li Tshooj 4, 5, 6 thiab 14 ntawm TSCA. Raws li TSCA, EPA yuav tsum tau kho cov nqi "raws li qhov xav tau" txhua peb xyoos. Xyoo 2018, EPA tau tshaj tawm 40 CFR Ntu 700 Subpart C txoj cai sau nqi uas teeb tsa tus nqi tam sim no.