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//be around 1.5 inches. Base on the size of the pretreatment area I estimate the volume of wastewater presently on the floor to be around 500-600 gallons (20 feet X 30 feet X . 125 feet X 7 .48 gallons/cubic foot = 560 gallons) . I informed Willie that I was going to test the pH of the floor. Willie said he thought the ph would be alkaline. I tested the pH of the wastewater on the floor with pH strip paper. The coloration of the paper indicated the pH of the wastewater to be around 3. 0. Willie was surprised by the ph test results and told me that the lift station may have contained some acid in the bottom of it prior to overflowing the tank. AMP has not notified the MUD of any spills to the pretreatment system within the last week. The drum wash tank had around 12 inches of wastewater in it. There is a small tank full of clear liquid around three feet south of the wash tank. According to Willie, the small tank south of the wash tank contains polymer. There is a white 55-gallon drum between the two tanks that contains around 250 pounds of caustic material to be used in the pretreatment system. The pretreatment holding tanks labeled by AMP as holding tanks B and C are full of raw wastewater from plating operations. The volume in the both holding tanks was measured by MUD inspectors Alex Baillie and Toni Duncan using a tape measure. The level of wastewater in each tank was taken by measuring the distance from the containers bottom to the top of the liquid level that could be seen in the tanks. West Portion of Plating Area: The floor in this area has secondary containment berm which surrounds the plating operations. The western portion of the plating area floor inside the berm is covered with 1-inch of wastewater. There are pools of various colored areas along the eastern edge of the floor where the plating operations start. I tested a portion of the floor in the southeast corner with pH strip paper. The pH paper indicated the pH to be around 6. Tanks and drums located in this area were not closely examined because of the wastewater covering the floor. AMP had previously cleaned this portion of the floor over Thanksgiving weekend. Additional spills from the plating area has occurred since that time. AMP has notified MUD of one spill from the plating rinse tanks since cleaning this area. AMP has a cone tank setup for batch treatment on the plating shop floor next to the southwest pretreatment area berm. The cone tank was filled to just above the 800 gallon mark on the side of the tank. Willie informed me that the cone tank contained treated wastewater that should be ready for discharge. However, I noted 4