The handful of Republican lawmakers most likely to provide crucial votes for Gov. Jerry Brown's budget plan are threatening to withhold their support without a dramatic rewriting of state environmental law. The demand, pushed in private talks with the governor, would curtail lawsuits against projects threatening ecological damage, grant waivers to big telecommunications companies and exempt many urban developments from environmental review. The legislators have declined to share the details of their proposal publicly, but draft legislation to overhaul the law was obtained by The Times. Sweeping changes in the California Environmental Quality Act would stand little chance of approval...