LINCOLN (AP) — More monitoring wells will be installed after diesel fuel was discovered above the groundwater near the new Pinnacle Bank Arena in Lincoln's West Haymarket.
A small amount of fuel was found about 20 feet under the surface, above groundwater in three areas. The discovery came as a result of monitoring that followed removal of a large diesel plume in early 2011.
General Excavating Co. dug up and replaced soil in about a square block on the former rail yard, and monitoring wells were installed before construction began on the arena.
“(It) was not unexpected that we would detect pockets of product,” said Miki Esposito, the city's public works director and previous compliance officer for the West Haymarket project.
City compliance administrator Frank Uhlarik said the fuel in the recent discovery presented no health risk. There were no vapors present, Uhlarik said, and no threat that the fuel would spread to Salt Creek.
Nonetheless, Esposito said, the small pocket must be monitored and remedial action taken.
The cost of the six new wells — about $26,000 — is part of an almost $108,000 addition to the contract of Alfred Benesch & Co., which is handling environmental investigation and monitoring work in the West Haymarket.
The wells are 2-inch PVC pipes that go about 20 feet into the ground, Uhlarik said. Benesch will remove any product it finds through a hand device or a vacuum truck, Uhlarik said.
The wells will be sunk near the newly built parking garage, the Canopy Lofts apartments and the Hyatt Place Hotel north of O Street in the West Haymarket.
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