The $1 billion, 688-acre project is slated for the southern edge of the city was recommended for approval by San Jose planning officials last week. The issue goes before the city council later this month.

A source with the Santa Cruz County Board of Supervisors says it is planning to appeal the planning commission approval. The outlying cities of Salinas and Hollister also have indicated that they may prepare appeals, along with the Association of Bay Area Governments, the Sierra Club, Audubon Society and Monterey Landwater.

The deadline for filing appeals is Tuesday, and the project goes before city council officials on Oct. 24. Opponents claim the new 20,000-worker campus - which includes eventual plans for a main street and parks but no housing - will drive up housing and infrastructure costs in surrounding areas, and harm the environment, though the appeal window for the environmental impact report have come and gone.