A mining company wants to dig hundreds of feet down on a site along the San Joaquin River. With an environmental review of the project released, the decision now lands on Fresno County supervisors to approve or deny — and, if the project gets a green light,  decide how deep to allow the company to dig. Mexico-based mining company CEMEX wants to dig a 600-foot hole and blast hard rock from its quarry site about 200 feet from the banks of the San Joaquin River, according to Fresno County’s environmental impact report. The company already mines aggregate at its quarry. A permit to operate expires in July 2026. However, a new California legislative bill may decide the future of mining on the prime river land, bypassing the supervisors.  Assembly Bill 1425 from Joaquin Arambula (D-Fresno) would ban dewatering from many sites along the San Joaquin River — effectively killing the CEMEX proposal.