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cn <br /> tr; <br /> TM Impacts of Hurricanes on Nutrient and Microbial IICFt Research <br /> a � <br /> - Jupiter(Jones)Creek Septic Study for Loxahatchee River Districtt <br /> Pollution St.'LucieEstuary,SoutheastFlorida <br /> �pContmuous,net positive groundwater discharge to Jones Creek that contribute to the basefTov✓ofhe, z .. .N•eai.. ti�r w + 4 <br /> VR.^v3�`F^,S .xa system.' 5 t r ; c v i, • t,..r.c...w �Y t _ .? 1-..�^ ` k 3 <br /> 2 r Groundwaterflow varied as a function of tide—higher flow during low tide.Range.L 2.5 cfs(high i <br /> aide)to 3.1=7.5 cis(low tide). <br /> } 3SepticTank Effluent contaminated groundwaters to levels in violation of State standards and suggest, ~mak t ,, ��l <br /> subsurface transport of contaminants into Jones Creek via the uppermost zones of the surficialk. <br /> aquifer; ` <br /> t5y!nn(• G j, fiW1.n11irx <br /> ' All monitoring wells were in violation of standards for fecal coliform bacteria(counts>4 wlonles/100 + " <br /> ml)duringboth the wet and dry season when counts ranged up to 30,000 colonies/100 mL <br /> . i l <br /> Highest fecal coliform counts and concentration so f color,BOD,COD,and nutrients(TN,TP NH4+,NO3- <br /> € SRP)were documented in monitoring wells closest to the septic dramfields. <br /> � �� <br /> .Consistently high fecal coliform counts occurred in the shallowest well of the study and ad-acentto r <br /> Jones Creek,suggesting Septic Tank Effluent transport into Jones Creek via the uppermost zones of the yr S NMrm., `F` a t <br /> `61surficial aquifer. �� \ <br /> 1/J <br /> ``3111 recorded nitrate concentrations exceeded the State health advisory for nitrate of and most exceeded�� <br /> tR the State Primary Drinking Water Standards. <br /> ndnc' ' ' rte• n m £ <br /> �VVater quality data within Jupiter:Creek showed chronic violations of State surface water"quafiry� <br /> l" andaids andhigh concentrations of sedimentary coprostanol in upper Jones Creek and highIs T <br /> "fos u 'to 28.86 lueh from0%o in shallow wells)confirmed direct inputs of septic tank effh <br /> stew6tOrsources. <br /> l <br /> c� <br /> • 411A <br />