Once again, the environmental battle is on to stop what would be San Jose’s first cemetery in 140 years from being built on a vast swath of land in Coyote Valley. Ten years after San Jose city leaders agreed to allow cemeteries on more than 100 acres of open space, environmentalists and nature lovers are renewing their fight against the Heritage Oaks Memorial Park project with their decade-old concerns about water usage, fire risks, wildlife impacts and material changes to the landscape.