bkshopr said:
What do you think happened to Carson? Shell sold the land to developers and must have done EIR. Before building on such land Shell must have cleaned it up and submitted reports to the government for clearance. Builders attorneys must have assess the liability and be satisfied with the Benzene clean up before erecting homes on the site.
It seems like Benzene is very easy to eradicate and self destruct and vanished when come in contact with atmosphere from your posts.
It is easy to remediate, once you know it's there and take appropriate action. It can be expensive, but it is not a technological challenge. Many gas stations built before 1990 have undergone site remediation for leaking underground tanks. Large petroleum tank farms have similar problems, but on a larger scale. It is not unusual to find a layer of gasoline floating on the groundwater beneath these sites. Gasoline contains roughly 10,000 parts-per-million of benzene. Historically, that number was much higher. The state drinking water standard for benzene is 0.001 parts per million. (And yes, all the public drinking water providers, including ours here in Irvine, carefully monitor their water sources for benzene and a host of other chemicals, and report the results to the pubic every year.)
BK, can you estimate the age of the Carson neighborhood? (North of Lomita, between Marbella and Panama) I don't believe there was any concept of, or requirement for, environmental due diligence, if I'm correct in my assumption that it is post WWII (1946-1955). In addition, I doubt that Shell ever owned the property. It's near refineries, but I doubt that the oil companies involved ever owned the actual land in question. They would not have been selling off properties at that time of development, since they were expanding, not reducing, capacity.
That being said, I'm not going to defend the oil company here. Historically, refinery work was a high-risk profession, as indicated by a high incidence of leukemia, and that can be caused by benzene exposure. It may make sense that people living nearby were similarly impacted. We don't have enough information to make a judgement. Let the legal system proceed.