In a press release agency officials say:
The MDCH has concluded that contact with the submerged oil will not cause people to have long-term health effects or have a higher than normal risk of cancer. Although long-term health effects will not result from contact with the submerged oil, contact with the oil may cause short-term effects, such as skin irritation.
The stretch of river addressed in the report runs from Talmadge Creek to Morrow Lake.
MDCH officials point out that their assessment "only discusses direct contact with the submerged oil. It does not evaluate breathing in chemicals from the remaining oil or any public safety concerns posed by the on-going cleanup of oil in the river."
In the report, the MDCH explained how they reached their conclusion of no long term health effects from contact with the submerged oil:
Non-cancer risk (hazard quotient) was calculated for the chemicals measured in the sediment. If the non-cancer risk (hazard quotient) values are less than 1.0, people are not expected to have long-term health effects from exposure to the chemicals. All risk values were lower than 1.0.
The state agency says their assessment does not change current restrictions regarding use of the river from the the Calhoun County Public Health Department and the Kalamazoo County Health and Community Services Department.