No GB, no Co-Ops that I can find in our area.
I did get one strong lead today from the local Water Treatment Plant. They use lime for water softening.
Chemestry 4101
Insoluable compounds of Calcium carbonate CaCO3, Magnesium hydroxide Mg(OH)2, Ferric hydroxide Fe(OH)3 and Manganese dioxide MnO2 are precipitated from the hard water source by the introduction of lime slurry Ca(OH)2 and Potassium permanganate KMnO4. Ain't that great? Don't you love it?
The resultant supernatent (water) we drink don't you know (you too) and the waste "primordial ooze" is slurried into a holding pond for trucking and land disposal. Local grove owners used to truck and dry the slurry before land application as a source of lime. This source is free but trucking, drying, and application are not free and drying is no longer in existence in our neighborhood.
However, slurry application without drying is an alternative. They will fill my existing 500 gallon tank with their 3" mud pump (as used to fill the current tankers for hauling). If I modify my tank for dispersal (fan type) discharge and add electric brakes and twin axles (wet slurry and tank will weigh 2.5 tons = 5,000 pounds), I can make as many runs to the treatment plant 8 miles away as I want.
Not quite so elegant as purchasing completely dry and spread 100% lime but certainly priced right.
Know of anything I should be concerned about in that ecological brew?
Oops, forgot to mention there is a constituient (low) concentration of salts (Sodium and Potassium) and insoluible calcium.