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Hazardous Waste Determination <br />Date: 03/31/26 <br />Observation 1 <br />Anodal BMC Cleaner Solution <br />Chemical Description = non-silicate alkaline soak cleaner(liquid) <br />Waste Composition = 5% solution <br /> pH = 10.3 <br />SDS = provided <br /> 22 CCR 66261.24 Review = No chemicals listed <br /> Discharge = 50 gal / week <br />Determination = Non-Hazardous Waste <br />Spent Frost Solution <br />Chemical Description = Ammonium Hydrogen Fluoride (powder) <br />Waste Composition = ~ 8% solution (weight) <br />pH = 1.5 <br />SDS =provided <br />22 CCR 66261.24 Review = No chemicals listed <br />Discharge = 80 gal / every other month <br />Determination = Corrosive Hazardous Waste <br />Spent Etch Solution <br />Chemical Description = Sodium Hydroxide (powder) <br />Waste Composition = ~ 12.5 % solution (volume) <br />pH = 14 <br />SDS = provided <br />22 CCR 66261.24 Review = No chemicals listed <br />Discharge = 80 gal / week <br />Determination = Corrosive Hazardous Waste <br />Spent Etch Rinse Solution <br />Chemical Description = Dilute Etch Solution <br />Waste Composition = ~ 1% solution (volume) <br />pH = 13 <br />SDS = provided <br /> 22 CCR 66261.24 Review = No chemicals listed <br />Discharge = 240 gal / week <br />Determination = Corrosive Hazardous Waste