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13 September 2012 <br /> AGE-NC Project No.99-0682 <br /> Page 6 of 17 <br /> • pH ranged from 0.96 (MW-8) to 7.53 (MW-6); <br /> • EC ranged from 197 pS/cm (MW-8) to 7,565 pS/cm (MW-8); <br /> • Temperature ranged from 21.10 (MW-7) to 29.92 °C (MW-1A); <br /> • DO ranged from 0.05 (MW-1A) to 56.13 mg/I (MW-8) and from 0.6 to 655%, <br /> respectively; <br /> • ORP ranged from -86.4 mV (MW-7) to 523.2 mV (MW-8); <br /> • Salinity ranged from 0.09 (MW-1 A) to 4.39 (MW-8); and <br /> • TDS ranged from 127 (MW-1A) to 5,148 mg/I (MW-8). <br /> 4.1.3. Post-ISCO Monitoring Event No. 1 Results <br /> On 28 June 2012, field parameters were collected from wells MW-1A, MW-2, MW-6, <br /> MW-7, MW-8, and MW-10 as part of post-ISCO injection groundwater monitoring. The <br /> following is a summary of the results: <br /> • Depth to groundwater measurements ranged between 24.62 feet(MW-1 A)btoc and <br /> 26.29 feet (MW-7) btoc; <br /> • pH ranged from 5.50 (MW-8) to 6.61 (MW-7 and MW-10); <br /> • EC ranged from 541 pS/cm (MW-1A) to 1,358 pS/cm (MW-6); <br /> • Temperature ranged from 20.66 °C (MW-7) to 28.33 °C (MW-1A); <br /> • DO ranged from 0.15 mg/I (MW-2)to 28.32 mg/I (MW-8)and from 1.8%to 337.2%; <br /> • ORP ranged from -60.5 (MW-6) to 193.7 mV (MW-8); <br /> • Salinity ranged from 0.26 (MW-1A) to 0.68 (MW-6); and <br /> • TDS ranged from 353 mg/I (MW-1A) to 883 mg/I (MW-6). <br /> 4.1.4. Post-ISCO Monitoring Event No. 2 Results <br /> On 05 July 2012, field parameters collected from wells MW-1 A, MW-6, MW-7, MW-8 and <br /> MW-10 as part of post-ISCO injection groundwater monitoring (well MW-2 was <br /> inaccessible). The following is a summary of the results: <br /> Advanced GeoEnvironmental,Inc. <br />