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<br /> <br />Suspected source of <br />pollution. <br />TOXIC SUBSTANCES <br />f3f Direction 'd ui <br />p o <br />O Onow. <br />Area of dead fish and/or Bridge <br />obvious pollution discharge. <br />Fig. 4.1. Suggested sites for collecting samples related to a fish kill in which only one source <br />is suspected. The circled numbers indicate where samples should be taken to look for the toxic <br />substances. Site R is a reference site above the affected area (modified from South Carolina <br />Department of Health and Environmental Control 1979). <br />Discharge sources relatively close <br />to suspected source of pollution. <br />P <br /> <br />Suspected source <br />of pollution. <br />ti <br />Fig. 4.2. Suggested sites for collecting samples related to a fish kill in which multiple sources <br />might be involved. The circled numbers indicate sites where samples should be taken to look <br />for possible toxic substances. Site R is a reference site above the affected area (modified from <br />South Carolina Department of Health and Environmental Control 1979). <br />35 <br /> <br />Bridge <br />_I\ <br />O <br />I