Free Sand Rail Games I Am Looking For Silica-free Safe Sandbox Sand. Where Can I Find It?

I am looking for silica-free safe sandbox sand. Where can I find it? - free sand rail games

I will not buy online, they charge 1.00 per book for shipping. I need 300 lbs. So far I have heard that could take Home Depot and Orchard Supply. I am in central California. I would like to see more options. No free silica quartz in it, so no need for Proposition 65 warning.