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2 . In11ction Fluid Monitoring Program Samples and <br /> measurements taken for the purpose of monitoring shall be <br /> representative of the monitored activity. The method <br /> used"_to obtain a representative sample of the fluid to be <br /> analyzed and the procedure for analysis of the sample are <br /> as follows: <br /> (a) Wellhead.. Injection Water <br /> (i') Grab samples shall be collected at the sampling <br /> valve at the wellhead and used "for laboratory <br /> analysis for physical and chemical <br /> characteristics. <br /> 3.. Injection Fluid.-Analysis Injection fluids shall be- <br /> analyzed. no" -less"ffrequently than indicated for the » <br /> following parameters: <br /> Monitoring <br /> Parameter Frequency Sample Type <br /> specific gravity,` unitless Quarterly grab <br /> conductivity, mhos Quarterly grab <br /> hardness, mg/l as CaCO3 Quarterly r .:grab <br /> total, dissolved solids mg./1 Quarterly <br /> pH, standard., units Quarterly grab <br /> Arsenic s. ,sA Quarterly grab <br /> } Barium_ loo ,„& IL_ 'Quarterly grab <br /> Boron Quarterly grab <br /> Cadmium. . t w,"y Quarterly grab <br /> calcium Quarterly grab <br /> Chloride Quarterly grab <br /> Chromium •- S M5L Quarterly grab <br /> Copper - Quarterly grab <br /> Fluoride Quarterly grab <br /> Lead A Quarterly grab <br /> Magnesium Quarterly grab <br /> M-Alkalinity Quarterly_ grab <br /> Mercury 62 �,9/� Quarterly grab <br /> Nitrate Quarterly grab <br /> Potassium Quarterly grab <br /> Selenium -- l Mj/L Quarterly grab <br /> Silver— S My�L Quarterly grab <br /> Silica Quarterly grab . <br /> Sodium Quarterly grabt <br /> Sulfate Quarterly grab <br /> vanadium Quarterly grab <br /> Zinc Quarterly grab <br /> Benzene D, !S- A Quarterly grab <br /> TolueneQuarterly grab <br /> Tr-i-chloroethylene — p,s ,,I//- Quarterly grab <br /> Phenol Quarterly grab <br /> Page 11 of 31 <br /> UIC Permit #CA194000002 <br />