So assuming your maths is right, I think it is, the glyphosate is not coming out evenly with the water but has been held up somehow over winter and then released perhaps, when the soil starts to warm in the Spring. Anyway, glyphosate is in the water everywhere, therefore it is getting into the plants and ,must also be in all the food that we produce. The only argument that we can use is that it is in such minute quantities that it can't have any effect. The problem I have with this is that if people are consuming tiny amounts with everything they eat, there could be an accumulative effect, where the body can't process it and has to stack it up somewhere. Pregnant mothers do this by passing anything they can't deal with onto the foetus, which is why unborn babies are so vulnerable to any harmful substances. (Thalidomide). The other thing is the continuous drip, drip effect on the gut biology. We know that like any medically prescribed antibiotic, a good dose of glyphosate can decimate much of our digestive bacteria which will then later recover, but what if it is always present in our food, surly over a period of time our finely balanced gut biology is going to be modified in some way. This has serious implications with regard to our immune system and mental health. I am afraid going around shouting GLYPHOSATEISVITAL at anyone who will listen is not going to win the argument and stop them banning it. We have to address the serious issues and come up with a solution, hence my attempt at getting it broken down more quickly in the soil.