Summary

EPA is issuing a notice of proposed action under the Clean Water Act to issue a National Pollutant Discharge Elimination System (NPDES) Permit No. CA0005241 to:

Dry Creek Rancheria Band of Pomo Indians
3250 Highway 128 East
Dry Creek Rancheria (near Geyserville), CA 95441

Dry Creek Rancheria is located in Sonoma County on Highway 128 in Sonoma County, California. The existing waste water treatment plant (WWTP) serves the Dry Creek Rancheria which includes a casino with an average daily population of approximately 3,000 guests and employees. Currently, all wastewater generated from the Dry Creek WWTP is either land-applied on site (through landscape irrigation or spray-field irrigation) or re-used on-site (through use in toilet flushing).  The facility’s application for permit renewal describes no discharge to receiving waters has occurred to date and more storage for reclaimed water will be added over next permit term. The proposed permit renewal contains two monitoring modifications for fecal coliform and turbidity.