Waste Management said that its Waste Management of California unit has been awarded a six-year solid waste collection contract by San Jose. The contract is valued at about $115 million . . . BMW of North America said it is increasing the price of its 500 series cars an average of $415 . . . National Distillers & Chemical said it completed the acquisition of all the outstanding shares of Pargas Inc. . . . The Department of Agriculture reported that the price of wheat at the farm at mid-August was $2.86 a bushel, down from $3.43 a year earlier.