More overbilling at DWP

The Department of Water and Power's primary construction company for dust-mitigation work in the Owens Valley, along with a related firm, overbilled or was overpaid more than $7 million, according to a recently released audit. Beth Barrett in the Daily News.

The bulk of the work was on three construction contracts that were awarded for about $126 million, but grew to $162 million before the work was completed, according to the audit by GCAP Services Inc.

Some of the construction work was overseen by CH2M Hill, the Denver-based engineering firm that a previous audit concluded overbilled at least $3.3 million on a $96 million contract for the project.

Costs have soared for the Owens Valley dust-mitigation work, from an estimated $120 million to the $415 million range.