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31 August 2016 <br />AGE Project No. 96-0235 <br />Page 8 of 8 <br />formed by pouring bentonite pellets into the annulus and allowing them to settle on the <br />filter pack. The bentonite pellets will be allowed to hydrate for the duration of time <br />specified by the manufacture, prior to grouting. The remaining annular space will be filled <br />to within one foot of the ground surface with a cement grout. The grout mixture will consist <br />of Type I/II Portland neat cement and not more than 3 gallons of water per 50-pound sack <br />of cement. The grout will be placed by pouring or pumping through a tremie pipe or auger. <br />A grouting inspection will be scheduled with SJCEHD personnel prior to any application <br />of grout. <br />Following completion of the monitoring well, the well location will be surveyed at the top <br />of the well casing by a California-licensed surveyor relative to a City of Stockton <br />benchmark and the North American Vertical Datum 88. <br />4.4. WELL DEVELOPMENT <br />Development of the proposed well will consist of a combination of bailing with a stainless <br />steel bailer to remove the major portion of fine-grained sediment from inside the well, <br />surging to flush out or draw in sediment from the filter pack, and additional groundwater <br />evacuation with a Waterra inertia pump to finish the removal of fine-grained sediment. <br />Developmental purging activities will be continued until field parameters (pH, electrical <br />conductivity, and temperature) have stabilized and purged water is visually sediment-free. <br />4.5. GROUNDWATER SAMPLING PROCEDURES <br />Groundwater sample collection will be performed in accordance with AGE's standard <br />monitoring and sampling procedures, which have been included as Appendix B. <br />4.6. EQUIPMENT DECONTAMINATION/WASTE MANAGEMENT <br />Prior to use, all sampling tools used for sample collection and down-hole drilling <br />equipment will be thoroughly rinsed with clean water after being washed with a solution <br />of Alconox. All probing rods will be cleaned prior to advancement at each probe boring <br />location. Any soil or water waste generated during field activities will be containerized in <br />properly labeled DOT-approved 55-gallon drums, and stored on-site in an area lacking <br />public access. Disposal alternatives will be evaluated based on results of soil and water <br />analysis. <br />Advanced GeoEnvironmental