I'm running a leaf compost. It's a pretty big scale. I pick up leafs from all the neighbors chop them with a special purpose tool and then store them for a year in multiple 250 gallon bins. The end result is about 150 gallons of humus per bin after the year after I mix in compost and they decay down. I'll probably do four bins this year, so 600 gallons of humus.
A few neighbors, more concerned about "organic" then me, have raised concerns that because leaves often time get picked up on the ground they may have grass clippings, or worse grass cuttings inside. And that this grass may have been infected with pesticides like Roundup?
Is this a real safety concern? Is there any guidelines on this? I am using the humus in vegetable gardens.
Here is a follow up question about whether or not humus or soil can be tested for toxins and pesticides (rather than just nutritional quality).