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4.1 GROUND WATER SAMPLING RESULTS <br /> Field parameters results are presented in the field data sheets attached in appendix A. <br /> For MW-10 and MW-11 respectively,pH values were 6.81 and 6.64, turbidity values <br /> were 2.68 and 9.53 NTUs, specific conductance was 1,340 and 1,005 µmhos/cm, and <br /> temperature was 17.9 and 18.3 °C. <br /> Analytical results for the newly installed wells are presented below in Table 3. Elevated <br /> parameters of note are Chloride, which ranged from 140 to 220 mg/L, and TDS, which <br /> ranged from 590 to 760 mg/L. <br /> Table 3 <br /> E Initial Sampling Analytical Results <br /> City of Riverbank Wastewater Treatment Plant <br /> Anal a uplicate <br /> MW-10 of _11 MW-11 <br /> yt <br /> Total Alkalin (m /L) 310 220 210 <br /> Bicarbonate as CaCO3 (mg/L) 310 220 210 <br /> Carbonate as CaCO3 (mg/L) <5.0 <5.0 <5.0 <br /> H droxide as CaCO3 (mg/L) <5.0 <5.0 <5.0 <br /> Chloride (mg/L) 220 140 140 <br /> Total Hardness as CaCO3 (mg/L) 150 210 210 <br /> Nitrate as N (mg/L) <0.50 4.7 4.5 <br /> c <br /> Sulfate as SO4 (mg/L) 44 55 55 <br /> Total Kjeldahl Nitrogen (mg/L) 2.2 0.72 0.82 <br /> • Total Dissolved Solids (mg/L) 760 590 600 <br /> l Boron (mg/L) 0.20 0.27 0.28 <br /> Calcium (mg/L) 36 46 47 <br /> Potassium (mg/L) 50 19 20 <br /> Magnesium (mg/L) 15 21 22 <br /> Sodium (mg/L) 200 130 140 <br /> Bromodichloromethane ( /L) <0.50 <0.50 <0.50 <br /> Bromoform ( /L) <0.50 <0.50 <0.50 <br /> Chloroform ( /L) <0.50 <0.50 <0.50 <br /> Dibromochloromethane ( /L) <0.50 <0.50 <0.50 <br /> Total Trihalomethanes (THM) ( /L) 1 <0.50 <0.50 <0.50 <br /> BOLD-Indicates an Exceedance of SecondaryMaximum Contaminant Level (MCL) <br /> City of Riverbank Wastewater Treatment Plant Monitoring Well Installation May 2006 <br /> DE Project No.:109-06 11 Rev.0 <br />