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Marley Cooling Tower Company a February 7, 2003 Groundwater Treatment System San Joaquin County Inspection Report being restarted. Board staff (AKJV and JST) observed and smelled many dead fish, including bass, catfish, suckers, and carp, in the canal downstream to the weir, where the heaviest concentrations of dead fish were present. No live fish were noted in the water at any of the locations we visited. No dead fish were observed in the canal in the vicinity of the outfall location. Warden Oldfather informed us that some dead fish were located downstream, at the railroad bridge crossing south of the Fremont Street bridge, and that most of the dead fish she observed were located downstream from that, at the remains of a concrete weir. At the railroad bridge, approximately 5,800 feet downstream of the outfall, approximately 100 dead fish were observed in the water. The fish appeared to be mainly large carp, a few catfish, and smaller sunfish -type fish. A whitish, hardened fihn was noted on the surface of the water near the edge of the canal in this location. Approximately 6,600 feet downstream of the there is a small concrete weir foundation across the creek. During periods of lower water flow, such as during the time period of the spill, the weir acts a dam across the canal. Water flows over the weir, but at the time of our visit, the water flowing over the weir was only several inches deep. The DFG personnel surmised that most of the dead fish were located in this region as the fish were essentially trapped upstream of the weir as they tried to flee the increasingly unsuitable water upstream caused by the discharge. Eventually the pH water in the small pool above the weir became alkaline to the point where the fish could not survive. The DFG biologist said that a pH above 10 is acutely toxic to most fish. Warden Oldfather said that she counted in excess of 600 dead fish at this location. Ms. Morgan and Warden Oldfather indicated that they noted dead fish as far downstream as the Waterloo Road (Highway 99) Bridge, where they began their inspection of the canal. During our visit, there were approximately several hundred dead fish along the banks of the canal in the water, and along the top of the weir, including large (5 to 10 pounds, estimated) carp, and smaller bass, sunfish, and catfish. * The DFG requested that the dead fish be cleaned up as soon as possible, and discussed this with MCTC and Ramos staff. Ramos planned to dispatch cleanup crews over the weekend to collect and dispose of the dead fish. Ramos also planned to have a crew and equipment to clean the outfall, effluent pipeline, and soil and vegetation beneath the outfall. 7:45 pm * JSR called SRT to inform him that he and AKJV visited the site and that they (SRT and JSR) would make arrangements to do field measurements at the site on Monday (9/23) 11 Approved: