Reference document for environmental testing acceptable levels?

Is there a reference document that someone can point me to for what to use as acceptable levels for environmental testing.

we currently se petri dishes for bacteria and mold/yeast in the air, but are going to do some basic swab testing for bacteria, mold/yeast, coliform.  I'm not sure where the limits that we have came from (established long before me) and I want to verify that we are using he correct ones.

Thanks

Is there a reference document that someone can point me to for what to use as acceptable levels for environmental testing.

 

we currently se petri dishes for bacteria and mold/yeast in the air, but are going to do some basic swab testing for bacteria, mold/yeast, coliform.  I'm not sure where the limits that we have came from (established long before me) and I want to verify that we are using he correct ones.

 

Thanks

Air is discussed elsewhere.

Otherwise (food contact surfaces) see -

https://www.ifsqn.co...ng/#entry178083