Hauv cov cai uas tau tshaj tawm thaum Lub Tsib Hlis 3, EPA tau tshaj tawm tias yuav txwv tsis pub siv dichloromethane feem ntau, uas tseem hu ua dichloromethane, uas yog ib yam khoom siv yaj thiab cov khoom siv pab ua. Nws siv rau ntau yam kev siv rau cov neeg siv khoom thiab kev lag luam, suav nrog cov nplaum thiab cov khoom siv foob, cov khoom siv tsheb, thiab cov tshuaj pleev xim thiab cov tshuaj pleev xim. Cov tshuaj no tau tsim tawm ntau heev - ntawm 100 lab thiab 500 lab phaus ntawm xyoo 2016 thiab 2019, raws li Daim Ntawv Qhia Txog Cov Ntaub Ntawv Tshuaj (CDR) - yog li kev txwv, yog tias dhau los, yuav muaj kev cuam tshuam loj rau ntau lub lag luam. Muaj kev cuam tshuam loj heev. lub chaw haujlwm.
Daim ntawv thov ntawm EPA hais txog "kev pheej hmoo tsis tsim nyog ntawm kev raug mob rau tib neeg kev noj qab haus huv los ntawm dichloromethane raws li cov xwm txheej ntawm kev siv, raws li tau sau tseg hauv EPA cov lus txhais txog kev pheej hmoo raws li Txoj Cai Tswj Xyuas Cov Tshuaj Lom Zem (TSCA)". lossis ib puag ncig tau txheeb xyuas hauv TSCA kev ntsuam xyuas kev pheej hmoo thiab siv cov kev cai rau qhov tsim nyog kom cov tshuaj tsis ua rau muaj kev pheej hmoo tsis tsim nyog.
Ntxiv mus, EPA txoj cai lij choj uas tau hais tseg yuav tsum muaj Txoj Kev Npaj Tiv Thaiv Chaw Ua Haujlwm Tshuaj (WCPP), uas suav nrog cov kev cai rau kev ua raws li cov kev txwv ntawm kev ua pa thiab kev saib xyuas kev raug rau qee yam xwm txheej ntawm kev siv dichloromethane tas mus li. Nws tseem yuav tsim cov kev cai khaws cov ntaub ntawv thiab cov kev cai ceeb toom rau ntau yam xwm txheej ntawm kev siv thiab muab qee lub sijhawm txwv rau kev siv cov kev cai uas yuav ua rau muaj kev puas tsuaj loj rau kev ruaj ntseg hauv tebchaws thiab cov khoom siv tseem ceeb.
Cov tuam txhab uas tsim khoom, xa khoom tuaj, ua khoom, faib khoom lag luam, siv lossis pov tseg cov methylene chloride lossis cov khoom muaj methylene chloride yuav raug cuam tshuam los ntawm txoj cai uas tau muab tso tawm. Txoj cai uas tau muab tso tawm teev ntau dua 40 pawg lag luam sib txawv uas yuav raug txoj cai, suav nrog: kev lag luam wholesale ntawm cov tshuaj lom neeg; cov chaw thauj roj thiab cov chaw nres nkoj; kev tsim cov tshuaj lom neeg organic thiab inorganic yooj yim; kev pov tseg cov khib nyiab phom sij; cov lag luam rau kev ua cov ntaub ntawv; xim thiab xim pleev xim. cov chaw tsim khoom; cov neeg cog lus plumbing thiab cua txias; cov neeg cog lus pleev xim thiab phab ntsa cladding; cov khw muag khoom siv tsheb thiab cov khoom siv; kev tsim cov khoom siv hluav taws xob thiab cov khoom siv; kev tsim cov khoom siv vuam thiab soldering; cov neeg muag khoom ntawm cov tsheb tshiab thiab siv lawm; kev ntxuav qhuav thiab kev pabcuam ntxhua khaub ncaws; nrog rau cov menyuam roj hmab, cov khoom ua si thiab kev ua si. kev tsim khoom.
Txoj cai uas tau hais tseg no hais tias "Kwv yees li 35 feem pua ​​ntawm kev tsim cov methylene chloride txhua xyoo yog siv rau kev siv tshuaj thiab tsis raug lossis tswj hwm los ntawm TSCA." )(B) Txhua yam tshuaj uas tsis yog lub ntsiab lus ntawm "tshuaj lom neeg" hauv nqe lus (ii)-(vi). Cov kev zam no "suav nrog ... txhua yam khoom noj, khoom noj khoom haus ntxiv, tshuaj, tshuaj pleev ib ce, lossis khoom siv, raws li tau txhais hauv Tshooj 201 ntawm Txoj Cai Khoom Noj Khoom Haus, Tshuaj, thiab Tshuaj Pleev Ib Ce, uas tau tsim, ua tiav, lossis pauv ua khoom noj, khoom noj khoom haus ntxiv, tshuaj, tshuaj pleev ib ce lossis khoom siv ..."
Rau cov lag luam uas yuav raug cuam tshuam los ntawm qhov kev txwv no, nws yog ib qho tseem ceeb uas yuav tsum pib xav txog lwm txoj hauv kev. EPA qhov kev ntsuam xyuas ntawm lwm txoj hauv kev rau kev siv methylene chloride tau txheeb xyuas lwm txoj hauv kev rau ntau yam kev siv xws li cov nplaum, cov tshuaj sealant, cov tshuaj degreasers, cov xim thiab cov tshuaj pleev xim, cov tshuaj sealant, thiab cov roj nplua nyeem thiab cov roj. Txawm li cas los xij, nws yuav tsum tau sau tseg tias tsis muaj lwm txoj hauv kev rau cov khoom siv thev naus laus zis (suav nrog) tau pom. Kev ntsuam xyuas ntawm lwm txoj hauv kev "tsis pom zoo cov khoom uas yuav tsum tau siv hloov dichloromethane; es, nws lub hom phiaj yog los muab cov npe sawv cev ntawm lwm cov khoom thiab cov tshuaj lom neeg thiab lawv cov kev phom sij piv rau dichloromethane, txhawm rau muab kev tshuaj xyuas rau lwm txoj hauv kev. Cov txiaj ntsig tau suav hais tias yog ib feem ntawm TSCA Seem 6 (a) dichloromethane txoj cai." Cov lus tawm tswv yim ntawm txoj cai tau thov yuav tsum tau txais tsis pub dhau Lub Xya Hli 3 thiab muaj los ntawm lub rooj vag tswj hwm hluav taws xob hauv tebchaws ntawm https://www.regulation.gov.
Lus Ceeb Toom: Vim yog qhov xwm txheej dav dav ntawm qhov hloov tshiab no, cov ntaub ntawv muab ntawm no yuav tsis siv tau rau txhua qhov xwm txheej, thiab yuav tsum tsis txhob ua raws li yam tsis muaj lus qhia tshwj xeeb txog kev cai lij choj raws li koj qhov xwm txheej tshwj xeeb.
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