Source: http://www.ktoo.org, September 7, 2016
By: Tim Ellis
Cleanup work continues today near Birch Lake where a tractor-trailer tank loaded with 5,000 gallons of diesel fuel overturned Monday, spilling the fuel into a ditch that runs between a small wetland and the Richardson Highway.
The workers are trying to keep fuel from seeping into the wetland or the lake.
Alaska state environmental officials say a fuel spill from an overturned fuel tank off the Richardson Highway totaled more than 3,500 gallons, the Associated Press reported.
The Department of Environmental Conservation said Wednesday the cleanup continues at mile 306 of the highway, where the accident involving the Big State Logistics tank occurred Monday afternoon.
Alaska Department of Environmental Conservation on-site coordinator Tom DeRuyter said workers Tuesday suctioned just more than 11,000 gallons of fuel-and-water mix from a ditch just south of the roadside pulloff to the Birch Lake State Recreation Site.
they also plugged some culverts that runs under that stretch of the Richardson Highway to prevent contaminated water from flowing in to Birch Lake, DeRuyter said.
“No oil has been seen on the lake,” he said Tuesday afternoon. “Is there oil infiltrating underneath the roadway? I suspect there is.”
Workers pushed up dirt berms to limit fuel from flowing into the wetland. He says the marshy area sits a bit higher than the lake, so he thinks the fuel is more likely to flow downgradient in the other direction.
“It all goes toward the lake,” he said, “and that’s why the culverts are plugged and … we’re watching those to make sure no oil gets into the culvert system.”
Tests will be conducted to determine whether diesel leaked into the wetland or lake. DeRuyter said the first priority is removing fuel and contaminated soil, which is why workers began building a roadway Tuesday to enable equipment to get in to the area to begin excavating.
“We still have pure fuel that’s leaking out of the vegetative mat and is forming pools on-site,” he said. “We need to get rid of that and the heavily contaminated soil and the vegetation that’s hold the oil and allowing it to leak out slowly. And that’s really the first step in this process.”
DEC and Alaska State Troopers both are investigating the spill and the equipment failure that apparently led to it.
Troopers say there were no injuries.
DEC says it hasn’t received any reports of wildlife being affected by the fuel.
A Trooper spokesperson couldn’t yet provide specifics, but said it appears the driver was not speeding.
Photos taken by DEC show what appeared to be jagged edges around the tip of the tongue that connected the rear tank to the tanker truck – which was carrying another 9,000 gallons of diesel.
Troopers said the Big State Logistics tanker was just rounding the bend of the long curve along the southern shore of Birch Lake about 1 p.m. Monday when somehow the trailer in tow broke loose, hit the ditch and overturned.
ADEC said the tank had multiple punctures and that most if not all of the 5,000 gallons of diesel in the tank quickly leaked out.
Mark Lockwood says he saw the tanker approach as he was sitting in his truck at the intersection of Lost Lake Road, waiting to get onto the highway and get back to Fairbanks.
“The fuel truck got past me,” he said, “I looked again, nobody was coming, pulled out. And the fuel truck was pulling over to the side of the road – sans trailer, and a hitch dangling. And so I just missed seeing that happen.”
A DEC news release says crews and equipment will be working around the cleanup site today, and that flaggers will be controlling traffic along that stretch of the highway around milepost 306.