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ATTACHMENT H:OPERATING DATA <br /> TABLE H-1 <br /> 2007 Title 22 Sampling—Constituents with Effluent(Injection Water)Concentration Higher than Influent(From WPCF) <br /> Analytical Results <br /> Constituent Units Influent Effluent <br /> Greater than a four-fold Increase <br /> Copper µg/L 1.52 10.4 <br /> Nitrate mg/L 1.9 34.3 <br /> Less than a four-fold Increase <br /> Mercury µg/L 0.0028 0.0072 <br /> Phosphorous, Total (as P) mg/L 0.5 1.6 <br /> Less than a two-fold Increase <br /> Fluoride mg/L 0.6 0.9 <br /> Iron mg/L 0.23 0.32 <br /> Manganese mg/L 0.07 0.11 <br /> Nickel mg/L 0.08 0.09 <br /> Sodium mg/L 184 196 <br /> Zinc mg/L 0.06 0.07 <br /> Alkalinity(as CaCO3) mg/L 310 380 <br /> Bicarbonate mg/L 380 460 <br /> Total Dissolved Solids(TDS) mg/L 1020 1060 <br /> Specific Conductance(EC) µmhos/cm 1440 1510 <br /> Chloride mg/L 158 171 <br /> Sulfate mg/L 97 122 <br /> Increase suggested, magnitude uncertain <br /> Cyanide mg/L not detected 0.042 <br /> Biochemical Oxygen Demand (BOD) mg/L 2.9 77 <br /> Chemical Oxygen Demand (COD) mg/L not detected 50 <br /> Source: HydroScience Engineers, Inc. 2007. See Table 4 in the report(Appendix 6)for additional information <br /> on analytical methodology and practical quantitation limits. <br /> Based on the operation of the STIG-1 well and generally consistent water quality of the <br /> injectate, the Domengine Formation appears to be remaining open to receiving injection <br /> water. The well has not had to have any kind of maintenance or rehabilitation during its <br /> operation. Although there is some pressure buildup at the STIG-1 well, the level of increase <br /> is consistent with what is expected from normal operation of an injection well. <br /> Continued monitoring of the injection water and operation of the STIG-1 will provide <br /> NCPA and EPA with the required information to evaluate the well's performance. <br /> H-4 SAC/371322/082550024(ATTACH M ENT-H.DOC) <br />