HARRISBURG, Pa. (AP) — Republicans who control Pennsylvania’s Senate are preparing an alternative to Gov. Tom Wolf’s proposal for a multibillion-dollar capital plan, funding it by allowing more natural gas drilling underneath state-owned forests rather than by taxing natural gas production.

The sponsors, Sens. Pat Stefano and Camera Bartolotta from southwestern Pennsylvania, said Tuesday they expect the bill to be unveiled this week, ahead of June’s budget negotiations.

Stefano says leases on another 500,000 acres of state forest land could yield $1 billion to finance projects without borrowing. Wolf, a Democrat, in January proposed a $4.5 billion bond to be repaid by a new severance tax.

The GOP’s plan targets a narrower scope of projects than Wolf’s proposal, including flood and stormwater control. Wolf in 2015 banned new drilling leases in state forests.