Oil Refinery Employees Tested for Benzene Poisoning

According to the Denver Post, most of the 500 employees at a Colorado oil refinery have had their blood tested for benzene contamination after it was found the tap water was found to contain 134 times the national drinking water standard. Here are the details.

* State officials say petroleum has been seeping into nearby Sand Creek, north of downtown Denver, and a breach in a tap water line to one of the office buildings. For now, employees are drinking bottled water and the line is being excavated.

* The state has long been aware of contamination from the refinery near Sand Creek. The refinery has been operating there since 1938. Suncor purchased the site from Conoco in 2003.

* According to a Dec. 31 Denver Post report, state health officials were alerted of the contaminated drinking water at the refinery via an anonymous tip from a Suncor employee.

* Officials concluded in December that, after testing the city of Denver’s municipal water supplies, the benzene contamination is isolated to only the private water lines at the refinery. Elevated benzene levels have been associated with anemia and other blood problems, as well as cancer.

* In late November, following a report by a fisherman of “foul-smelling black goo” seeping into Sand Creek, the Environmental Protection Agency responded to the contamination of Sand Creek, contracting three 2,500 vacuum trucks to suck oil from Sand Creek, the Denver Post reported on Nov. 29, and a trench to be dug to capture toxic materials before they slipped into the creek. The official EPA response order came in early December.

* Benzene levels in Sand Creek, just up from the South Platte River, have fluctuated from 670 parts per million, which is 134 times the national drinking water standard, on Dec. 22 to 74 on Dec. 29. The levels had crept back up to 190 on Jan. 4, the Denver Post reported.

* In addition to ordering employees to drink only bottled water at the site, Suncor has also tested the office buildings for toxic vapors and have found two buildings that required vapor removal systems. One building also required a ventilator and a filter. The state’s Hazardous Materials and Waste Management Division has also ordered the company to conduct daily inspections of Sand Creek including water sample testing.

* Suncor processes about 93,000 barrels of crude oil a day, the Denver Post reported, with about 85 percent of the oil coming from Colorado and Wyoming. The site also accepts sand oil crude from Canada.

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