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Memo to Antonia Vorster -2- 15 January 1987 <br /> The following table lists the constituents or properties that show significant <br /> differences between intake levels and initial and/or sustained discharge. levels. <br /> All other constituents showed little or no change from background levels. <br /> Sample Locations (By Number) <br /> 1 2 3 4 5 Comments <br /> Iron 0.95 86.0 1.6 18.0 1.9 All samples exceed EPA (mg/1 ) <br /> drinking water criteria of 0.3 <br /> mg/l . Samples 2-5 exceed fresh <br /> water aquatic life criteria <br /> -1.0 mg/l. <br /> Zinc 0.03 0.53 0.21 0.33 0.17 Samples 2-5 exceed EPA (mg/1) <br /> fresh water aquatic life 24-hr <br /> criteria of 0.047 mg/1 . <br /> Manganese 0.21 1.3 0.2 0.52 0.14 All samples exceed <br /> (mg/1 ) drinking water supply criteria <br /> of 0.05 mg/l . <br /> Lead <0.001 0.064 0.008 0.004 0.027 Samples 3 & 5 exceed the <br /> (mg/1 ) fresh water aquatic life/ <br /> 4-day criteria of 0.001 mg/l. <br /> Sample 2 exceeds 1 hr. <br /> criteria of 0.025 mg/l . <br /> Arsenic <0.001 0.005 0.001 0.002 <0.001 All may exceed 1 in 106 <br /> (mg/1 ) cancer risk level. <br /> COD 42 117 51 67 55 Does not decrease to original <br /> (mg/1) level. <br /> BOD <5 31 <5 13 <5 Eventually decreases to <br /> (mg/1) background. <br /> TSS 7 256 12 73 16 Sustained runoff remains <br /> (mg/1 ) slightly higher than back- <br /> ground. <br /> Total 0.14 1.6 0.16 0.68 0.19 Sustained runoff remains <br /> Phosphorus slightly higher than back- <br /> (mg/1 ) ground. <br /> Total 1.4 14.0 1.7 7.5 3.1 Whiskey Slough Platform <br /> Kjeldahl remains more than 2 times <br /> Nitrogen higher than background. <br /> (mg/1 ) <br />.+.le-•.r.�,-.�'�7."`.-r--•�:-^"T2c;c^?C'.ru.'?_S�_r�.-..._.e,:•-±;�•.•;..'^!',.�^,•c•+r-�-rerr,^,,rT.e�:1"..r ?'�"-`"-`•"?.Y-;'i^4'.^.,:':a=T::!.+e-rc.-...;..a�c�.�..'ea"'..-;s".¢••!.-.c.^+;c+?T;,"�?'�,.^Tfr^ <br />