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Wastewater Treatment Sludge—hydroxide or hydroxide/sulfide precipitates from treatment of <br /> wastewater. <br /> Wet/bry Cycle—alternation of soaking and drying a sample to allow determination of material loss and <br /> visual observation of sample disintegration resulting from repeated soaking and drying cycles. <br /> 7 <br /> x: <br /> pR <br /> •C.s. G0vERNME1T PRINTINC OFFICE:1995-650-006/22049 <br /> K-16 <br />