Patent ID: 8796501

Claim:
A method of reducing the solubility of a mixture of heavy metal bearing paint residue and spent paint removal media under leach test conditions, comprising contacting a mixture of heavy metal bearing paint residue and spent paint removal media with at least one heavy metal stabilizing agent of a physical shape, density, and in an amount effective to reduce the solubility of the heavy metal under leach test conditions to a level no more than a hazardous waste lower limit as established under USEPA RCRA regulations 40 CFR part 261.24, as determined in an EPA TCLP test performed on the stabilized material or waste, as set forth in the Federal Register, vol. 55, no. 126, pp. 26985-26998 (Jun. 29, 1990), wherein the at least one heavy metal stabilizing agent resists phase-separation or sifting-separation from paint removal media in a pre-mixed storage device and/or pressurized media and stabilizer pre-blend pot prior to nozzle discharge, and further wherein the at least one heavy metal stabilizing agent resists embedding onto the media blasted substrate as seen by the human naked eye.