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<br /> .9EP-27-2005 08:40 From' To'97759885 P.8.9 <br /> <br /> <br /> <br /> <br /> 40 0.6 <br /> 6wunny <br /> 36CEnterococci 0.5 <br /> 90 • N03 imgrl) <br /> E <br /> g 26 OA <br /> 20 0.3 <br /> 0 <br /> ° 15 0.2 <br /> t0 <br /> <br /> a 0.1 <br /> 0 0 <br /> i 2 3 4 <br /> station <br /> <br /> Figure 8. FANnity. nitrate-nitrNa concentrations, Enteroeoecus density <br /> versus station <br /> <br /> Discussion <br /> F.nterococcus densities are often high at various locations at the Wai Opae tidepools, and appear <br /> to be independent of salinity (Figures 1, 6, and 8), suggesting that bacterial density is not a <br /> simple function of freshwater input. Additionally, bacterial densities are not related to turbidity <br /> (Figure 2) su"eating that sediment inputs are not a source of Enterococcuv. In Fact, there is an <br /> inverse relationship between bacterial densities and turbidity, and turbidity actually increases <br /> with salinity (Figure 3) Suggesting that turbidity is a function of wave action rather than <br /> terrestrial run-off.. Clostridium ingens densities were almost tat times higher when <br /> Entavcoccus densities were above the violation threshold (Figure 4), suggesting a common <br /> sourcc Int both bacteria. As both bacteria occur in the human intestines and are used as <br /> indicators of waste water, it is likely that the source is human waste. The ptimary source of <br /> human waste to the Wai Opae ridcpools is cesspools of houses in Vacationtand (although it is <br /> unknown which houses are possible significant sources). <br /> The highest frequency of Enterococeicv violations occurred on Monday, and all violations <br /> occurred in the first three days of the work week (Figure 5). These resulis suggest that weekend <br /> occupation of bousea in Vacationland (many of which are rental properties or vacation homes) <br /> may lead to increased waste water production and subsequently increased cesspool fluxes. The <br /> observation that Enterocacus densities appear to reach background levels by Thursday (Figure <br /> 5) suggests that cesspool fluxes return to background levels by then. <br /> Examination of the Accos dateset, however, indicates that the hydrology at Wai Opae is not a <br /> aimpiv function of a groundwater lens moving back and forth with the tide. Station 2 appears to <br /> have dii1crent characteristics than stations 1, 3, and 4, where fresher waters have higher <br /> Enterococcus densities but lower nitrate-nitrite levels (Figure 8). This observation does not <br />