ARCHIVED REPORTS_FIVE-YEAR WATER QUALITY REVIEW REPORT 11-17-2008

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FIGURE 12 SUMMARY OF TREND ANALYSES FOR GROUNDWATER- NEENAH PAPER COMPANY RIPON FACILITY TRENDS AT 5%SIGNIFICANCE LEVEL-BY PARAMETER Specific Total Dissolved Chloride Nitrate pH Conductance Sodium Sulfate Solids %UP %DOWN %UP 11% 20% 11% 9% 31% 22% 20% Overall Total Overall Total Up 16% Down 17% %DOWN 18% 11% 4% 47% 11% 27% 13% OB-1 U N N N U N N 29% 0% OB-2 N D N N U D N 14% 14% OB-3 N N N D N N N 0% 14% OB-4 U N D U U U U 57% 0% OB-5 N D N D N D N 0% 43% OB-6 N U N N N N N 14% 0% OB-7 N U Ni N N U N 29% 1 0% OB-8 N N N U U N U 43% 0% OB-9 N D U D D N N 14% 43% OB-30 D U* N D D D D 0% 71% OB-11 N U* N D N _ N N 0% 14% OB-12 N N N N N N U 0% 0% OB-13 N U* D N N N N 0% 0% OB-14 N N N N N N U 14% 0% OB-15 N U* N N N N N 0% 0% OB-16 D U* U D D D D 0% 71% OB-17 D N U D D D N 14% 57% Z 06-18 N N N D N D N 0% 29% OB-19 N N N D N D N 0% 29% OB-20 N N N N N N N 0% 0% j2 OB-21 N N U N N N U 29% 0% 06-22 D U* U D N N_ N 14% 29% T OB-23 N N N N U U N 29% 0% OB-24 N N N D N N D 0%�i 14% n OB-25 N N N D N D N 0% 14% M OB-26 D U N D N N N 14% 29%% m OB-27 N N N N N Ni N 0% 0% OB-28 U U N U U U U 86% D% < TH-1 N N N D U N N 14% 14% TH-2 N U N D N D N 0% 29% TH-4 U D N N U U N 43% `14% TH-5 D N N D D D D 0% 71% TH-6 N N N N N N N 0% 0% TH-7 D N N D N D D 0% 57% TH-8 U U N U U U U 86% 0% TH-9 N U N D N U N 0% TH-10 NN N D N D U 14% � 29% TH-11 N U N D U U U 57% 14% PW-4� N N N N U N N 14% 0% PW-5 N N N N U N N 14% 0% PW-6 N N N N N N N 0% 0% PW-7 N N N N U N N 14% 0% PW-8 N N N N N N N 0% 0% M-7-A D U N D N U D M-19-C N D N N U U N 29% 14% Notes: ''=Data sets>90%nondetected;trend an artifact of changing detection levels.