南海岸空气质量管理局(SCAQMD)在两年前做出这样的决定,在南加利福尼亚要逐渐停止使用四氯乙烯,而两年后,SCAQMD仍然在研究关于四氯乙烯的使用和放射,同时也在试图说服清洗商使用其它清洗剂。
To date, SCAQMD remains the only jurisdiction in the United States to invoke a ban on perc, although the rules adopted two years ago allow drycleaners to continue using perc until 2020 provided they meet increasingly stringent equipment requirements. SCAQMD rules apply to an estimated 2,100 cleaners in the counties of Los Angeles, San Bernardino, Orange and Riverside.
到目前为止,SCAQMD仍然是美国唯一可行使禁止使用四氯乙烯权力的机构