Maybe I shouldn't expect them all to know, but it is all they sell...I've wondered if others have this problem. I can only find one aggregate supplier in my area that sells material to specification. There is a VERY large supplier in my area that seems to distribute to all the smaller yards. This operation is responsible for most of the major roadway construction in the county. Their road base material actually has clay in it. These are the same people that fraudulently overcharged the state millions of dollars and will be serving time for it. When I ask them about ASTM 2940 they get pissed thinking I'm arrogant and won't give me the contractor price. I went to the local Ideal dealer the other day in a jam, in need of geotext for my Versa-Lok wall and they tried selling me silt fence. Then I went down the street to the Cambridge dealer and they said that they never heard of it. If you ask for Crusher Run you get stone dust mixed with 3/4" gravel. The one supplier that has the right product is 20 miles away. No wonder why I keep losing bids when I add the additional trucking charges.