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Five-Year Water-Quality Report November 17,2008 <br /> Neenah Paper FR LLC Ripon Mill Page 14 of 19 <br /> TABLE 2 <br /> Water Quality Protection Standards <br /> Parameter Units Semiperched Upper Intermediate <br /> Aquifer Aquifer Aquifer <br /> Bicarbonate mg/L 307 482 315 <br /> Calcium mg/L 51 209 49 <br /> Chloride m 178 197 68 <br /> Electrical conductance grnhos/cm 1,242 1,580 760 <br /> Ma esium m 26 43 8.8 <br /> Nitrate m 4.3 4.7 5.7 <br /> _pH units 6.5-8.5 6.5-8.5 6.5 -8.5 <br /> Potassium m 2.6 10 6.8 <br /> Sodium mg/L 184 89 100 <br /> Sulfate mg/L 111 150 31 <br /> Total dissolved solids m 713 1,030 470 <br /> No other changes in plant process were made during the period 2002 through mid-2008. Prior to <br /> 1998, the two facilities reduced effluent TDS by reducing alum consumption through changes in <br /> paper manufacturing chemistry, installing a brine concentrator at the cogen plan and trucking <br /> concentrated brine offsite for reuse, and replacing production wells PW-1 through PW-3 with wells <br /> PW-4 through PW-8 (currently only wells PW-6 through PW-8 are used) <br /> Current plans are to operate the NP facility part time(as little as 50%of the time for the near term). <br /> This will reduce the mass of TDS proportionally to the reduced operating schedule,because there <br /> will be less effluent generated. <br /> The quality of effluent(as illustrated by TDS mass in ASB-2) was stable between 2002 and 2006 <br /> (Text Figure 8,page 5). In 2007, TDS showed an increasing trend (Text Figure 9,page 5). In <br /> 2008, TDS mass dropped to pre-2006 levels, or lower. <br /> Table 3 shows the percentage change in the concentration of several monitoring parameters between <br /> the most recent available data(May 2008) and 2002 data. All parameters, except sulfate, show lower <br /> concentrations in 2008 (sulfate showed no change). TDS concentration was below 1,100 mg/L (the <br /> discharge limitation set by the WDR) for ASB-2 during the entire period of 2002 to date. <br /> 003044.02 Lawrence&Associates <br /> W.I Clients ToxRiver-Neenah U year review reports l5 Year Review 2008Weenah_5YearReview Aug2008.doc <br />