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Sierra Chemical Co. . • SOP 917 RO 1.3 Hydrochloric Acid: Waste Management Program 200 Baume hydrochloric acid is brought to the facility by way of tank trucks and transloaded to a storage tank. It is then repackaged in one gallon bottles, non-bulk(5 to 53 gallon drums) and bulk containers (up to 350 gallon totes). Unloading is performed on the unloading pad using an air pad pressure system to "blow" the product from the tanker to the product storage tank. The material flows through flexible chemical hose into the facility's rigid piping system. The piping is constructed of schedule 80 PVC. During unloading the excess air in the storage tank is forced out through piping connected to a scrubber system. The product is stored in a 5000-gallon acid resistant tank. The tank is filled through a 2" inlet on top and emptied via a 2"outlet at the bottom. The tank is located within a secondary cement containment in the event of any ruptures, overfills, or leakage, from the repackaging process. Transference from the storage tank to the filling station is accomplished by drawing material from the bottom of the storage tank by an air pump. The air pump transfers the acid into a 50-gallon head tank located in the filling booth. Piping utilized during this operation is schedule 80 PVC. As material is drawn out of the storage tank, negative air pressure is prevented by entry of air through a check valve located at the top of the tank. Prior to filling, the bottles and cases are placed in a bottle or case washing station where they are washed, drained, and prepared for filling. This activity takes place within secondary containment. The wash water reports to the appropriate effluent tank. The filling station is located within the secondary containment. Bottles enter onto the conveyer which feeds a stationary 4 head filler. A 4x1 gallon case is placed under the filling head and, a filling nozzle enters the mouth of the bottle and forms an airtight seal between the filling nozzle gasket and the neck of the bottle. Acid then flows under gravity pressure from the head tank into the bottle until the bottle is full. Once the bottle is full, acid will continue to flow through the sealed bottle into an overflow tank until the bottle exits the filling machine onto the conveyor. Acid from the overflow tank is recycled into the head tank for latter filling. If the overflow tank overfills, the spilled material is pumped into the effluent tank. After the 4x1 gallon case has been filled, the case of acid continues down a diked conveyer system where it is capped. Then through a water rinse area, where any excess acid spilled on the bottle exterior is washed off. Once cleaned the bottle is picked up by another conveyer carrying it out of the diking system to a point where the bottles are labeled, and palletized. The rinse water, any spillage, storm water, and wash water from cleanup are pumped to the effluent tank. The effluent is comprised of wash water used to clean the filling booth, filling equipment, and conveyers, bottle rinse water, and hydrochloric acid that may have 8