Residents have until 5 p.m. April 11 to submit comments on the proposed renewal of the National Pollutant Discharge Elimination System at the Easterly Wastewater Treatment Plant, 6040 Vaca Station Road. Treated wastewater is discharged to Old Alamo Creek, a tributary of New Alamo Creek, Ulatis Creek, Cache Creek Slough and the Sacramento-San Joaquin Delta. … The tentative order includes updated effluent limitations for ammonia nitrogen, nitrate plus nitrite, dichlorobromomethane, dibromochloromethane, and cyanide. It removes effluent limitations for acute whole effluent toxicity and electrical conductivity.