TURNER — An independent audit shows most safety problems at the former DeCoster Egg Farms have been fixed, allowing a federal fine to be reduced by $1.9 million, farm representatives said Thursday.

The audit found that 92.3 percent of problems cited by the Occupational Safety and Health Administration during its 1996 investigation have been fixed. The threshold for a reduction in OSHA’s $3.9 million fine to $2 million was 90 percent.

The safety audit, along with a vote by workers against union representation in March, show that things have improved to the point that supermarkets should end their boycott, said Thomas Somers, a lawyer for Maine Ag and Quality Egg, the companies formed after the DeCoster Egg Farms dissolved last year.

Shaw’s, Hannaford Bros., Stop & Shop, and Star markets have stopped carrying DeCoster eggs.

“The regional boycott against eggs produced on the farm should end immediately,” he said.

OSHA, which received a draft copy Thursday, reserves the right to make comments and send the 800-page document back for revisions, said Ted Fitzgerald, an OSHA spokesman in Boston.

“While the preliminary results have leaked out to the press, consumers must bear in mind that the conclusions are not final,” he said.

DeCoster was the largest egg producer in Maine when it was fined for violating federal workplace health and safety laws.

The audit was conducted by a Massachusetts-based safety consultant jointly selected by DeCoster and OSHA.

Labor Department officials said farm workers had to pick up dead chickens with their bare hands, faced exposure to manure possibly contaminated with salmonella, and lived in trailers infested with rats and cockroaches.

With the backing of the Mexican government, 14 former employees of the DeCoster Egg Farm filed a class-action lawsuit last month, claiming in part that Mexican workers were forced to live in squalor.

Somers said the report proves that those days are long gone.

“It really puts to rest those allegations that continue to be made about the farm, that workers are being mistreated, that they’re being discriminated [against] and that there are OSHA violations,” he said.