- City and County of San Francisco (San Francisco, CA)
- …at the PUC will require at least a Grade Level I Wastewater Treatment Operator Certificate or an Operator -in- Training Certificate issued by the State of ... If an operator is hired with an OIT ( Operator -in- Training ) Certificate, upon expiration...upon expiration of the OIT Certificate, the Operator must have a California Grade I Wastewater… more