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AR TI E 0 <br /> of hazardous materials should first be cleaned using dry sweeping <br /> methods. Only residues of spilled material should be cleaned using a wet <br /> method. The use of a hydrophobic mop or laundered rags will reduce the <br /> amount of contaminated disposable materials, such as pads or granular <br /> absorbent. <br /> Stockton Unified School District NETWORK ENVIRONMENTAL SYSTEMS,INC. <br /> Hazardous Waste Source Reduction Plan 9 <br />