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<br /> SwF-27-2005 08:37 Fans: To:97759885 P.~=? <br /> <br /> <br /> <br /> The Deparmemt of Heap has been monitoring for Entetrn»ccus at the Wai Opae tide pools at in <br /> Vaeationland for some time (and Clostridium more recently). Vacarionland is a coastal <br /> community consisting of IDS homes, many of which use cesspools for waste water disposal. <br /> Water quality concerns of the local community lead to further water quality monitoring by the <br /> Aecos Laboratory. The Kapoho Kai Water Association provided me with datesets from the <br /> Department of Health and Aecos Laboratories to examine for relationships between bacteria <br /> densities (F.ntewcocrxu and Clostridium) and available tmvironmental and temporal data (i.e., <br /> nutrients, turbidity, datat sampled). Below I present my analysis and my interpretation of the <br /> results. <br /> Methods <br /> The data were provided to Dr. Parsons in hard copy and had to be input into an MS Excel <br /> spreadshoct for analysis. The data were input into a columnar format by date, station, salinity, <br /> pH, Enterococew densities, violation flag (if densities were >7 efu/100 mi), total nitrogen <br /> (mg/1), nitrate-nitrito (mg/1), total phosphorus (mgll), Clostridium pajf mgens densities (cfu/lo0 <br /> ml), and turbidity (NTU). Not all of them variables were measured for every sample, in which <br /> case cells were left blank. The data were primarily examined using salinity, turbidity, and time <br /> as indcpcmdmt variables, and Ewerococcus density as the dependent variable. Comparisons of <br /> Entervem,cus and Clostridium densities were ulso conducted. Data were examined as <br /> continuous variables (i.e., examining ttnc raw data as collm-ted, looking for relationships), and <br /> categorically (i.e., based on whether Enterococcrcr densities were in violation or not). In the <br /> latter case, the data were examined via frequency analysis. <br /> Results <br /> The first analysis conducted was to examine the Department of Health data (one pool sampled <br /> over a 6.5 year period) and compute the frequency of Enteracoccus violations versus salinity <br /> (Figure 1). <br /> 70%- <br /> <br /> 00%. <br /> <br /> 5o% <br /> <br /> 40% <br /> <br /> 30% <br /> <br /> 20% <br /> 10% <br /> <br /> 0% <br /> 410 11 to 15 16 to 20 21 tc 26 26 to 30 31 to 35 3,35 <br /> sannny ranges (ppt) <br /> <br /> Figure 1. Frequency of Enterococcus vtolstions versus ssardty <br />