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� � J present for developing photographic plates. Mr Smith was asked if the developing baths contained silver. Mr. Smith confirmed that the developing bath contained silver nitrate. Mr. Smith stated that he was disposing of the material (one gallon a week) in his waste water treatment plant. We then proceeded to the silk screen preparation area. In the silk screen area we found a vat which contained caustics. It was noted that the floor did not have drains and the liquids from these processes were flowing to the floor. Mr. Smith stated that the floor was cleaned off and the material was taken to the on - site treatment plant for treatment prior to discharge to the City of Stockton Sewage Treatment Plant. We then proceeded to the drilling room and down the hall to the receiving area. It was noted that improper storage of chemicals was evident. Kent Miller, City of Stockton Fire Department, informed Mr. Smith of the Fire Code violations. These violations included the stacking of hazardous chemicals and storing incompatible chemicals in the same area. (Acids and bases were stored next 'to and above each other. ) Mr. Smith then lead the group to the chemical plating area. Mr. Hunt, R.E.H.S. , observed several baths in the plating area which were unlabeled, as was as a 55 gallon drum which was unlabeled and contained spent oil according to Mr. Smith. It was noted that several electrical violations existed in this area and were pointed out to Mr. Smith by Kent Miller. It was also noted that the vats of chemicals, which were not labeled, were placed on wooden planking above a bermed cement floor. It was further noted that the bermed area below the planking was covered with hazardous chemicals which dripped or spilled from the vats above. I asked Mr. Smith how the chemicals were removed from this area. Mr. Smith stated that "the chemicals were pumped out and then taken to the on - site treatment plant" . I noted that the employees in this area were not wearing protective clothing, moving plates from tank to tank spilling various liquids, some of which were hazardous, through the wooden slats to the floor below. We then proceeded to the hazardous waste storage area and waste water treatment area. As I proceeded through the doorway, vapor mists could be seen to the west side of the covered porch area where there were several large barrels of chemicals with hazardous waste labels. It was noted that four of the barrels had accumulation dates starting in September 1990. One barrel had been turned upside down. The hazardous waste label on this barrel had been torn and was very badly damaged. Mr. Hunt confirmed that this barrel had an accumulation date of 7/7/90. I asked Mr. Smith why the barrel was upside down. Mr. Smith replied " the barrel had been turned upside down because the barrel had a leak around the bottom" . Mr. Smith did not give any information as to why the label was damaged. Mr. Smith indicated that the material in