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V7VC RV CIRCUITS, INC. 916 S. CENTER ST. • STOCKTON.CA 95206 • TEL:(209) 464-4562 • FAX(209)463.2648 November 16 , 1992 H City of Stockton EIVENOY 18 1992 Department of Municipal Utilities 2500 Navy Drive OVIRONMENT.AL HEALTH Stockton, CA 95206-1192 PERMIT/SERVICES Attn: Morris L. Allen Director of Municipal Utilities Dear Mr. Allen: This letter is a written request for consideration to the notice of Termination of Wastewater Service dated October 27 , 1992 . Violation #1 - September 22 , 1992 Ethylben2ene is a substance found in our Dry Film Stripper of which we dispose about 60 gallons per month. The conditions of our waste water permit states that Total Toxic Organic (TTO) sample grabs will be taken at the final effluent discharge wier box. This sample was taken from the bypass waste stream, which is a point well up stream from the final discharge point . Our bypass waste stream constitutes 5-10 percent of total effluent discharge into the city sewer . If this sample had been taken at the final discharge wier box, there would have been no violation . Violation #2 - October 9 , 1992 We were well aware that the clarifier was upset . At the time MUD pulled a sample from the clarifier , we were not discharging. We were in the process of transfering the contents of the clarifier to an emergency holding tank. MUD also pulled a grab sample of the final effluent which was in compliance . Violation #3 - October 9 , 1992 In late October Larry Williams, Rhonda Archbold , and I discussed this problem. The copper and lead occasionally found in our bypass waste stream was coming from rinse water following our hot oil reflow process of which is used about 3 hours per shift . It was suggested that we install a drag-out rinse immediately following the hot oil bath. Larry asked Rhonda to work with us to solve the problem. This change was made November 1 , 1992 , and appears to have reduced the amount of copper and lead content .