跟进：Toledo 化工泄漏势头减弱：35人送医、疏散圈缩至半英里，就地避难令解除

位于美国俄亥俄州 Lucas 县的 Toledo 市北部的化工储罐泄漏事故在10月21日下午出现缓和。市政府当日17时左右宣布，Toledo 消防救援部门已把疏散范围从最初的一英里缩小至半英里，并解除三英里范围的就地避难令。医疗系统 ProMedica 向《今日美国》表示，截至当日17时，至少35人因出现可能与泄漏有关的症状前往当地医院就诊，其中大多数人经治疗后已出院。此前受伤的 Lucas 县警长办公室警员仍是已知唯一一名响应人员伤者，他当时自行驾车前往医院。（GSM 据《今日美国》报道）

这起事故发生在10月20日晚约21时30分，Progress Avenue 1266号的 MC Tank Terminal 一座容量5,500加仑的储罐在转运过程中出错，工业涂料原料甲基丙烯酸缩水甘油酯泄漏并以气体形式扩散。事故之初，消防部门下令一英里范围内约983名居民疏散、三英里范围内居民关紧门窗、关闭引入室外空气的通风系统就地避难；市长 Wade Kapszukiewicz 一度称受损储罐在最初数小时内有爆炸风险，救援人员因此无法靠近，市府决定让罐内化学反应自行完成、让化学品继续排放。市政府发言人 Rachel Hart 其后澄清，事故中并未发生爆炸。

市长 Wade Kapszukiewicz 21日下午表示，储罐温度已显著下降、排放的气体量明显减少，当局正等待罐内物料排空，而不是派救援人员冒险上前强行止漏。他表示，只要罐内还有物料，就仍有爆炸风险，人员不能靠近。市政府称，消防救援部门的危险品处置人员正与联邦、州和地方伙伴一起监测现场状况、协调处置并评估下一步。Lucas 县地区卫生委员会委员 Karim Baroudi 表示，该化学品目前主要起刺激作用，可引起眼睛、鼻、口和皮肤灼痛，过度接触的症状包括头痛、头晕、疲乏、恶心和呕吐；市政府同时表示，闻到气味或感到刺激并不等于接触到了危险剂量。

事故还造成 Toledo 地区两个学区10月21日停课：Toledo 公立学校关闭57所学校、约21,000名学生受影响，Washington Local 学区约6,600名学生同样停课。俄亥俄州环境保护署发言人 Bryant Somerville 表示，泄漏源于物料转运时发生的错误；对错误的具体细节，官方尚未公布。涉事企业 MC Tank Transport 在声明中表示，公司正与当局合作应对，首要关切是居民、救援人员与员工的安全，并对被迫疏散的居民表示将提供协助。

Follow-up: Toledo Chemical Leak Eases: 35 Treated at Hospitals, Evacuation Zone Cut to Half a Mile, Shelter-in-Place Lifted

The chemical tank leak in northern Toledo, in Lucas County, Ohio, eased on the afternoon of October 21. At around 5 p.m. local time, the city said Toledo Fire and Rescue had reduced the evacuation zone from the original one-mile radius to a half-mile radius and lifted the three-mile shelter-in-place order. The ProMedica health system told USA TODAY that, as of 5 p.m., at least 35 people had reported to local hospitals with symptoms potentially related to the leak, and most had been treated and released. A Lucas County sheriff's deputy who was injured while responding, and who drove himself to a hospital, remained the only known injured first responder. (GSM, reporting from USA TODAY)

The incident began at about 9:30 p.m. on October 20 at the MC Tank Terminal at 1266 Progress Avenue, where an error during a transfer caused glycidyl methacrylate, an industrial coating chemical stored in a 5,500-gallon tank, to leak and disperse as a gas. Fire officials initially ordered about 983 residents within one mile to evacuate and advised those within three miles to shelter in place, keeping doors and windows closed and turning off ventilation systems that draw in outside air. Mayor Wade Kapszukiewicz initially warned that the compromised tank could become explosive within hours, so responders could not approach it and the city decided to let the reaction inside the tank run its course. City spokesperson Rachel Hart later clarified that no explosion had occurred.

Kapszukiewicz said on the afternoon of October 21 that the tank's temperature had dropped significantly and the amount of gas being vented was much lower, and that authorities were waiting for the chemical to vent out rather than sending first responders in to actively stop the leak. As long as material remained in the tank, he said, there was a risk of explosion and crews could not approach it. The city said Toledo Fire and Rescue hazardous materials personnel were working with federal, state and local partners to monitor conditions, coordinate mitigation and evaluate next steps. Lucas County Regional Board of Health Commissioner Karim Baroudi said the chemical was mostly an irritant at this point; the city says it can cause burning of the eyes, nose, mouth and skin, and symptoms of overexposure include headache, dizziness, tiredness, nausea and vomiting, while stressing that smelling it or feeling irritation does not mean a person has been exposed to dangerous levels.

Two Toledo-area school districts canceled classes on October 21: Toledo Public Schools closed 57 schools serving roughly 21,000 students, and Washington Local Schools, serving about 6,600 students, also closed. Bryant Somerville, a spokesperson for the Ohio Environmental Protection Agency, said the release resulted from an error that occurred when the material was being transferred; officials have not provided further details. MC Tank Transport said in a statement that it was working with authorities, that the safety of residents, first responders and employees was its immediate concern, and that it was committed to assisting those affected.

来源：GSM·美国（原文链接）

图片来源：图：俄亥俄州 Toledo 跨越 Maumee 河的 Anthony Wayne Bridge（资料图，非事发现场）。Limpfster94 摄，CC BY-SA 4.0，经维基共享资源。Photo: The Anthony Wayne Bridge over the Maumee River in Toledo, Ohio (file photo, not the incident site). Limpfster94, CC BY-SA 4.0, via Wikimedia Commons.

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