SIOUX CITY, Iowa (KCAU) — The General Contractor for the Grandview Park Tank Replacement Project is suing the city of Sioux City for more than $618,000.

Christansen Commercial Contracting indicates in court filings that the claim is for additional expenses involving the project.

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The contractor said the city did not make the site available when required by the contract, resulting in the schedule being extended through another winter season.

The suit indicates that the city of Sioux City did admit to that f

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