Government geologists said they saw no immediate health or safety threat to nearby residents.
There has been no safety threat caused by street flooding since the rain garden was built in 2004.
The pipeline would be buried, posing virtually no safety threat.
General Motors has said it does not believe the pickups pose a safety threat.
The report said a lack of adequate management at the 24-year-old reactor may pose a safety threat to workers and the public.
Misguided efforts to deal with what some people perceive as safety threats?
Nuclear regulators and the company said the cracks did not pose an immediate safety threat.
The real safety threat is from thousands of bear hunters armed with rifles.
"And there's no question that something that's a distraction is a safety threat," she said.
State officials say the 30-year-old plant, which was closed last year, does not appear to pose any immediate health or safety threat.