Wɔ April 20, 2023 no, U.S. Asoɛe a Ɛhwɛ Nneɛma a Atwa Yɛn Ho Ahyia So (EPA) de mmara bi a ɛbɛbara methylene chloride a wɔyɛ, ne yɛ, ne ne kyekyɛ kɛse wɔ aguadi mu ho nyansahyɛ mae. EPA de ne tumi di dwuma wɔ Ɔfã 6(a) a ɛwɔ Toxic Substances Control Act (TSCA) a ɛma adwumakuw no kwan ma wɔde bara a ɛte saa to nnuru so no ase. Asiane a ntease nnim a ɛne sɛ obi bepira anaa tebea bi. Wɔtaa de methylene chloride di dwuma sɛ ade a wɔde siw nneɛma so wɔ nneɛma a wɔde nkata so ne nea wɔde kata so, nneɛma a wɔde yɛ kar, ne nneɛma a wɔde yi paint ne nea wɔde kata so mu, na saa mmara yi betumi aka nnwuma te sɛ kar, nnuru, ne nnuru.
EPA nyansahyɛ no hwehwɛ sɛ wɔbara methylene chloride a wɔde di dwuma wɔ mfiridwuma ne aguadi mu nneɛma dodow no ara mu. Nea ɛka nyansahyɛ no ho ne nneɛma a wɔayi afi mu, titiriw no mfe 10 a wɔde beyi paint ne nneɛma a wɔde kata so a wɔde di dwuma wɔ ɔmanfo wimhyɛn adwumayɛ mu no afi hɔ na wɔakwati sɛ wɔbɛsɛe ɔman no ahobammɔ ne nneɛma a ɛho hia kɛse. EPA nso atrɛw saa nea wɔayi afi mu yi mu akɔ NASA a ɛde dichloromethane di dwuma ntɛm ara wɔ tebea horow bi a emu yɛ den anaa nea ɛho hia mu a wonni akwan foforo a ahobammɔ wom wɔ mfiridwuma anaa sikasɛm mu.
Dwumadibea no nyansahyɛ no nso bɛma kwan ma wɔde dichloromethane adi dwuma de ayɛ hydrofluorocarbon-32 (HFC-32), ade a wobetumi de adi dwuma de ayɛ mmerɛw sɛ wɔbɛsakra afi HFC afoforo a wɔkyerɛ sɛ ɛwɔ wiase nyinaa hyew a ɛkɔ soro no mu, na ɛbɛboa mmɔden a EPA rebɔ sɛ wɔbɛtew HFC ahorow so no. sɛdeɛ US Innovation and Manufacturing Act of 2020. Nanso, adwumakuo no bɛhwehwɛ sɛ wɔn a wɔyɛ ɔmanfoɔ wimhyɛn, NASA, ne HFC-32 di methylene chloride adwumayɛbea nnuru ho banbɔ nhyehyɛeɛ a ɛka anohyetoɔ a wɔhwehwɛ ne sɛ wɔbɛhwɛ sɛnea wɔde wɔn ho hyɛ mu a ɛbata ho no akyi. ne nea wɔhome.
Sɛ wɔtintim mmara a wɔahyɛ ho nyansa no wɔ Federal Register mu wie a, EPA bɛgye ɔmanfoɔ nsɛm a ɛfa ho no atom nnafua 60 wɔ rules.gov/docket/EPA-HQ-OPPT-2020-0465.
Wɔ Yawda, May 16, 2023 no, U.S. Asoɛe a Ɛhwɛ Nneɛma a Atwa Yɛn Ho Ahyia So (EPA) de mmara bi a wɔahyɛ ho nyansa a ɛbɛsesa EPA nhyehyɛe ahorow a ɛde Toxic Substances Control Act (TSCA) di dwuma no ho nhyehyɛe bi too gua. EPA no hwɛ TSCA Chemical Registry a ɛkyerɛw nnuru a wonim sɛ wotumi tɔ wɔ United States nyinaa din. Wɔ TSCA ase no, wɔhwehwɛ sɛ wɔn a wɔyɛ ne wɔn a wɔde nneɛma ba amannɔne no de nnuru foforo ho amanneɛbɔ a edi kan ma gye sɛ wɔayi wɔn afi mu (sɛ nhwɛso no, nhwehwɛmu ne nkɔso). Ɛsɛ sɛ EPA wie asiane nhwehwɛmu a wɔyɛ ma nnuru foforo ansa na wɔayɛ anaa wɔde aba amannɔne. Mprempren mmara a wɔahyɛ ho nyansa no ma emu da hɔ sɛ ɛsɛ sɛ EPA wie asiane nhwehwɛmu anaasɛ ɛpene amanneɛbɔ a ɛkyerɛ sɛ wɔayi nnuru foforo ɔha biara mu nkyem 100 afi mu ansa na nneɛma atumi akɔ gua so, a ɛne 2016 TSCA nsakrae no hyia.
Wɔ April 21, 2023 no, U.S. Nneɛma a Atwa Yɛn Ho Ahyia Ho Banbɔ Dwumadibea (EPA) de Ɔman Plastic Pollution Prevention Strategy a wɔayɛ a ebetumi anya nkɛntɛnso kɛse wɔ mpɔtam a wɔahyɛ ho mmara a nea ɛka ho ne nneɛma a wɔde kyekyere nneɛma, adetɔnfo, wɔn a wɔyɛ plastic, nwura a ɛyɛ den a wɔhwɛ so ne mmeae a wɔsan de di dwuma, ne nea ɛkeka ho Sɛnea nhyehyɛe a wɔayɛ no kyerɛ no, EPA botae ne sɛ ebeyi plastic ne nwura afoforo a egyina asase so a wɔayi afi hɔ no afi hɔ denam 2040 a botaeɛ pɔtee a ɛdidi soɔ yi na ɛwɔ hɔ: tew efĩ a ɛba plastic a wɔyɛ mu no so, wɔma nneɛma a wɔde di dwuma akyi no sohwɛ tu mpɔn, wɔmma nneɛma a asɛe ne micro-/nanoplastics nkɔ nsuo kwan mu, na wɔyi nneɛma a asɛe a ɛreguan afiri nneɛma a atwa yɛn ho ahyia no mu. Saa botaeɛ yi bi ne sɛ, EPA kyerɛ nhwehwɛmu ahodoɔ ne mmara kwan so nneyɛeɛ a wɔresusu ho. Wɔ mmara kwan so nneyɛe a wɔresusuw ho no mu no, EPA kae sɛ wɔresua mmara foforo a ɛwɔ Toxic Substances Control Act ase ama mmeae a wɔde nneɛma a wɔsan de di dwuma a ɛkɔ anim a wɔde pyrolysis di dwuma de yɛ nneɛma a wɔasan ayɛ no plastic a wɔasan de adi dwuma no ho ade. Dwumadibea no nso rehwehwɛ sɛ wogye Basel Apam a United States penee so nanso wannye ntom wɔ 1990 mfe no mu no atom sɛ ɔkwan foforo a wɔbɛfa so adi amanaman ntam ɔhaw a ɛfa plastic nwura ho no ho dwuma.
Wɔ November 16, 2022 no, U.S. Asoɛe a Ɛhwɛ Nneɛma a Atwa Yɛn Ho Ahyia So (EPA) de nyansahyɛ mae sɛ wɔbɛma wɔn sika a wɔbɔ wɔ Toxic Substances and Control Act (TSCA) a wɔbɔ mprempren no nkɔ soro, na ebinom bɛboro mmɔho abien. Saa Amanneɛbɔ foforɔ a ɛfa Mmara a Wɔahyɛ ho nyansa ho yi sesa EPA nsusuiɛ no, ɛfiri Ɔpɛpɔn 11, 2021, de kɔ soro TSCA ka titire de ayɛ nsakraeɛ wɔ nneɛma boɔ a ɛkɔ soro ho. TSCA ma EPA kwan ma wɔgye sika firi wɔn a wɔyɛ nneɛma (a wɔn a wɔde nneɛma ba amannɔne ka ho) wɔ adwumakuo no dwumadiɛ ho sɛdeɛ TSCA no Nkyɛmu 4, 5, 6 ne 14 kyerɛ no. Sɛnea TSCA kyerɛ no, wɔhwehwɛ sɛ EPA yɛ nsakrae wɔ sika a wɔbɔ no mu “sɛnea ɛho hia” mfe abiɛsa biara. Wɔ afe 2018 mu no, EPA de 40 CFR Part 700 Subpart C collection mmara a ɛkyerɛ mprempren sika a wɔbɔ no mae.