Robert Bud Shearer, a former environmental health and occupational safety director of San Francisco State University has been slapped with more than 100 criminal charges for accepting gifts in exchange for providing contracts to a waste disposal company, Chemical Hazardous Material Technology.

Shearer, 64, is charged with accepting more than $183,000, a 1999 Volvo automobile and 45 international plane tickets to China and Singapore over the last seven years during his stint at the university from 1994 to 2009.

In return, Shearer made sure that the company's contract with the university was renewed.

San Francisco District Attorney George Gascon claimed that the bribery started around 2004, when Shearer proposed recruiting a new company to look after the university's hazardous waste disposal. He is known to have permitted the company to present inflated bills to the university during a period of record budget cuts.

Along with Shearer, the company's owner, Stephen K. Cheung, 47, is also charged with more than 100 felony counts of bribery.

Cheung is said to have received a total of $4 million from the university, which is estimated to be much higher than what it should have cost the university.

"We know that there were bills in the approximate amount of $4 million dollars; not all of it was overbilled but that was the total amount and we know a lot of that was over billing," Gascon said.

Officials said that there were several other companies that were ready to offer the contracts at a lesser price, but, Shearer told the university that Cheung's company was the only bidder.

The costs for waste disposal reduced by more than $500,000 in the first year after Shearer resigned from the university.

Cheung's company demanded around $730,000 during Shearer's last term at the university; $546,000 during the 2004-05 academic year, which was followed with $989,000, $635,000 and $549,000 in the subsequent years.

The amount was drastically reduced to $162,000 under the previous company and $177,000 under a new company.

Shearer and Cheung were arrested last month and are currently in jail with bail set at $5 million.