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SENT EY:M DC. 320 KODAK PARK 8- 0 4:49PM KODAK ENV. SER` S- 2812092399132;# 1/ 1 <br /> ���fE® <br /> C® JUN - 9 2000LHNMENTT <br /> ENVIRONMENTAL HEALTH <br /> PERMIT / SERVICES <br /> June 9, 2000 <br /> Jeffry Rose <br /> Qualex, Inc. <br /> 555 Industrial Park Drive <br /> Manteca, CA 95337 <br /> SUBJECT: Acute Aquatic Toxicity Testing of Photoprocessing Waste Streams <br /> Dear Mr. Rose: <br /> This letter is in response to your questions concerning the California Title 22 acute aquatic <br /> toxicity testing of waste photoprocessing solutions. <br /> Acute aquatic toxicity testing of the waste solutions (spent developer overflow and <br /> washwater)from representative Kodak color photoprocesses was completed by EA <br /> Engineering, Science, and Technology, a California Department of health Services Certified <br /> Laboratory. The resulting 96-11our LC50 test results indicated that such color waste streams <br /> do not exhibit the characteristic of toxicity(96-hour i.CSO values less than 500 mg/1 are <br /> considered toxic) and is therefore non-hazardous as defined by California Title 22 acute <br /> aquatic toxicity criteria, in fact, there was no observed effect on the fish exposed to the waste <br /> processing solutions for the 96-hour testing period. <br /> Waste solutions (spent developer overflow and washwater)from representative Kodak black <br /> and white photoprocesses were tested by Eastman Kodak Company in its aquatic toxicity <br /> laboratory using nearly identical test procedures (the only changed variable was water <br /> hardness). These tests also show that such black and white waste streams do not exhibit the <br /> characteristic of toxicit and is therefore non-hazardous as defined by California Title 22 <br /> acute aquatic toxicity criteria. <br /> If you have further questions regarding this issue, please contact Kodak Environmental <br /> Services at (716)477-3194. <br /> Thank you for using Kodak products. <br /> Kodak Environmental Services <br /> Eastman Kodak Company <br /> Rochester,NY 146.52-6255 <br /> 0131/2-98 <br />