Question on venting toilet and sink in basement

Hello,

When my house was built I had the basement plumbed for a 1/2 bath and work room sink along with the waste enjector basin. THe plummer also ran the 2" vent for the enjector basin to the roof. DO I still need to vent the sinks and toilet if the enjector basin is vented?
Thanks

Yes, all fixtures require venting. They may have the vent tie into the existing ejector pit vent. Check with your local inspector to make sure it is permitted.