FIELD DOCUMENTS - Laserfiche WebLink

Home Browse Search

k9 KLEINFEL€?ER • (µg/L) by 6 to 103 percent. SMCLs are aesthetic standards not typically related health risks. The greatest iron concentrations were detected in MW-3 and MW-9 and the least was detected in the MW-7 sample. General water quality data showed the TDS concentrations ranged from 260 mg/L to 710 mg/L. The TDS concentrations exceeded the recommended level SMCL for TDS of 500 mg/L in three of the eight wells, but did not exceed the SMCL of 1,000 mg/L. TDS concentrations are cumulative results of many of the individual constituents dissolved in the groundwater, which include anions and cations. The specific conductance concentrations were the highest in MW-2 and MW-4. The concentrations of specific conductance in all of the groundwater samples ranged from 540 to 1,110 umohs/cm. The MCL for specific conductance is 900 umhos/cm, with a SMCL of 1,600 umhos/cm. The results of the water table laboratory analysis can be found in the Tables section of this report (Table 1 and Table 2). The laboratory analytical reports can be found in Appendix D. • 4.3. DEEP GROUNDWATER ZONE SAMPLING RESULTS The groundwater sample collected from Zone #3, the shallowest zone tested (163 to 183 feet bgs), reportedly contained the greatest concentrations of TDS and several other analytes versus the samples collected from the two deeper zones. Nitrate as NO3 concentration (50.5 mg/L) in the Zone #3 sample exceeded the California drinking water standard PMCL, the manganese concentration (110 µg/L) in the Zone #1 sample exceeded the California SMCL, and the sodium concentrations in all three zones exceeded the California SNARL (2 mg/L). The following Text Table 5 displays the detected concentrations of the analytes included in the three zone tests conducted. • Page 13 of 20 63138.H01/ST06R312/JDZ:Iv April 7, 2006 ©2006 Kleinfelder, Inc.