COM 1032.002 2004-2006 - Laserfiche WebLink

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.SEP-27-2085 08:39 From: To:9775988s P.6/9 A final analysis of the Department of Health data examined the fivquency of Enterococew violations versus the day of the week the sample was taken. Samples most fte*m-tly in violation were collected on Mondays; all samples in violation were collected between Monday and Wednesday. These results suggest that the source of Enterococcus is most prevalent an the early in the week, and is virtually absent towards the latter end of the week. 0-2- 271154 OAS .I _..101 ftnre 0.1 3i 2*8 : 0.09 am Ole e15 OR 0 M T W R F S u day of wools Fipura s. % of samptaa in violation vs day of weak I exatnincd the Aecos Laboratory tiataset to provide a spatial view of the issue (the Department of Health data - rcre all from anc- site). Four stations were sampled by Aecos Laboratory on a monthly basis between February and August 2005. An examination of Enterococcus density versus salinity aerms stations indicates once again that Enierococcus density violations are not simply a function of salinity (Figure 6). Nitrate-nitrite concentrations display conservative dilution with increasing salinity (Figure 7),a typical characteristic of this groundwater-borne nutrient. The other chemical parameters (total nitrogen and phosphorous) were generally below limits of detection and were not malyzeA An examination of average salinity, nitrate-nitrite conccntrations, and Enterxrcocxw densities (Figure 8) demonstrates, however, that station 2 clues not appear to follow conservative dilution, as nitrate.nitritc levels are lower versus stations 1 and 3 (of similar salinity), yet.Enterococcres densities are twice as high. These observations suggest that tho freshwater source at station 2 may be different versus the other stations (i.e., station 2 has diftcrent characteristics relative to salinity versus the other stations).