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','he wastewater is generated during the manufacturing processes of 1.rge scale integrated circuit boards. The plating area produces an average of 25,000 gallons a day of hazardous waste. The che�icals consist primarily of Nitric Acid, Sulfuric Acid, Formic Acid, Fluoboric Acid, Thiourea, Stannous Sulfate, Hydroquinone, Hydregen Peroxide, Potassium Chloride, and various vendor supplied proprietary chemicals. For more information on the chemicals involved in the wastewater recovery tank, please refer to INDY's variance application. Before the new system is installed, INDY wishes to removed the present underground pipes leading to the present system. The new system will be placed on the area above the present underground pipes; however, before the new system is constructed, a precision test will be conducted on the pipes. The pipes are of PVC type material and are considered compatible with the chemicals contained. No leaks are expected; however, INDY wishes to remove the pipes, and conduct soil analyses if required, to avoid the possibility of future problems. In an effort to maintain operations during the excavation process and the construction of the new system, a temporary above ground pipe will be installed. This will allow the original system to continue operation, thus allowing the company's manufacturing operations to also continue. Once the new system is operational, a closure plan will be submitted to your office for approval. This closure plan will be submitted a minimum of GO days prior to the intended closure. This plan will contain an indepth analysis of the situation, as well as a contingency plan in the event contamination is determined. Duane Gelster indicated that an inspector will not be present during the testing and excavation processes. INDY has contacted San Joaquin County certified precision testing companies and a state certified laboratory to conduct the tests. While the soil analysis is being performed, the trenched area around the excavated pipes will be covered with a tarp to reduce the possibility of soil erosion. This satisfies Mr. Gelster's requirements. The results of the test will be submitted at a later date to your office when a closure plan for the underground tank is submitted. Mr Gelster found no objection to this proposal since the pipe in question is merely 30 feet. In concluding the tank closure, a post closure report will be filed with your office. This report will contain the results of all tests conducted, the disposition of the tank and any contaminated material.