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r. ,i/ <br /> 02 December 2009 <br /> AGE-NC Project No. 96-0106 <br /> Page 4 of 10 <br /> and anticipated water injection volumes are discussed further in Section 4.1. <br /> 3.3. DRILLING AND SOIL SAMPLE COLLECTION <br /> One ground water monitoring well is proposed for the performance of ISCO pilot test and will be <br /> located between 5 and 10 feet southeast of boring B-18. <br /> -� <br /> The pilot boring for the proposed well will be advanced to depths of approximately 25 feet bsg <br /> utilizing a truck-mounted,hollow stem drill rig equipped with 8'/i-inch diameter hollow-stem augers. <br /> However,the total depth may slightly vary according to site conditions encountered during drilling. <br /> Soil samples will be colleck-five foot intervals to total depth of the boring for lithologic purposes; NO ZOO ( <br /> soil samples will not be submitted for laboratory analysis. 50^i <br /> tIA- <br /> Following installation,the well will be developed to maximize water flow and minimize the amount <br /> of fine-grained sediment drawn into the well during pumping or bailing.After development,the top <br /> of the newly installed well casing(well head)will be surveyed to determine its elevation relative to <br /> mean sea level. Procedures for well installation, development and survey are presented in Sections <br /> 4.2. and 4.3., respectively. <br /> So <br /> 3.4. BACKGROUND MONITORING AND SAMPLING <br /> Prior to any ISCO application,a series of field parameters and laboratory samples willbe/gAGE's <br /> llected <br /> to establish baseline or background site conditions. Samples will be collected follo 'n <br /> standard monitoring and sampling procedures, which have been included in Appendix G. Field <br /> parameters and COC's listed below will be collected from wells MW-4 and the proposed monitoring <br /> well. The following summarizes the proposed baseline background monitoring and sampling: <br /> Field Parameters: <br /> • Depth to water will be collected in all of the sites shallow ground water monitoring wells to <br /> establish hydraulic gradient and flow direction at the time of the injection. <br /> • Prior to each purge volume, temperature, pH, oxygen reduction potential (ORP), and <br /> dissolved oxygen (DO) will be collected from monitoring well MW-4 and the proposed <br /> monitoring well. <br /> Advanced GeoEnvironmental,Inc. <br />