. Bulletin. Natural history; Natural history. 646 IixiNois Natural History Survey Bulletin Vol. 32, Art. 4. Collecting an entrainment sample from the intake canal of the Kincaid Generating Station. May, when a second pump was obtained. Throughout the remainder of the study period, two depths were sampled simultaneously from the same intake bay. An intake bay directly in front of one or between two operating circulating water pumps was chosen. The depths sampled at the intake were (1) between the bottom of the skimmer wall and a horizontal con- crete ledge at approximately 8 m and (2) between t
. Bulletin. Natural history; Natural history. 646 IixiNois Natural History Survey Bulletin Vol. 32, Art. 4. Collecting an entrainment sample from the intake canal of the Kincaid Generating Station. May, when a second pump was obtained. Throughout the remainder of the study period, two depths were sampled simultaneously from the same intake bay. An intake bay directly in front of one or between two operating circulating water pumps was chosen. The depths sampled at the intake were (1) between the bottom of the skimmer wall and a horizontal con- crete ledge at approximately 8 m and (2) between the concrete ledge and the bot- tom of the intake structure at approx- imately m (Fig. 2 and 4). The total volume of individual piunp samples was measured on one pump with a Rockwell turbometer (model W-160DR) connected between the pump and the plankton net (Fig. 4). Average pumping rates calculated from metered samples were used to determine the volumes of unmetered samples. From June through October 1976, organisms were collected from the plankton nets at approximately 4-hour intervals to investigate diurnal differences in entrainment rates of fish eggs and lar- vae. That procedure also reduced the amount of damage to larval fish ex- perienced during less frequent collecting prior to June. All samples were preserved in 5-percent formalin. Samples were returned to the laboratory, where all fish eggs and larvae were sorted from other organisms cap- tured by the plankton net. Fish eggs were counted but not identified. Larval fishes were counted and identified to the lowest possible taxonomic level, using keys and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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