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11 March 2014 <br />AGE Project No. 96-0236 <br />Page 31 of 32 <br />pound sack of cement. The grout will be placed by pumping through a tremie pipe or <br />auger. A grouting inspection will be scheduled with EHD personnel prior to any <br />application of grout. <br />WELL DEVELOPMENT <br />Development of the proposed wells will consist of a combination of bailing with a <br />stainless steel bailer to remove the major portion of fine-grained sediment from inside <br />the well, surging to flush out or draw in sediment from the filter pack, and additional <br />groundwater evacuation with a Waterra inertia pump to finish the removal of fine- <br />grained sediment. Developmental purging activities will be continued until field <br />parameters (pH, electrical conductivity, and temperature) have stabilized and purged <br />water is visually sediment-free. <br />EQUIPMENT DECONTAMINATION/WASTE MANAGEMENT <br />All sampling tools will be thoroughly rinsed with clean water after being washed with a <br />solution of Alconox. All down-hole drilling equipment will be pressure washed prior to <br />starting each boring. Rinseate and soil cuttings generated during drilling and <br />groundwater sampling activities will be containerized in properly labeled, Department of <br />Transportation (DOT)-approved 55-gallon drums and stored on-site in an area lacking <br />public access. Disposal alternatives will be evaluated based on the results of soil <br />analysis. <br />ISCO SOLUTION PREPARATION AND INJECTION PROCEDURE <br />Solutions of 5% hydrogen peroxide will be prepared on-site utilizing 200 gallon water <br />totes and water from an on-site source. The totes will be filled will approximately 175 <br />gallons of tap water and 25 gallons of industrial grade 35% hydrogen peroxide. For <br />each tri-weekly injection event one tank, equal to 200 gallons of diluted peroxide <br />solution, will be pressure injected (using sump pumps) into each of the proposed wells <br />(27 proposed wells; total of 5,400 gallons injected per event). It is anticipated that up to <br />four totes will be injected simultaneously into two shallow and two intermediate wells <br />during each daily injection event. The volume of solution that is injected daily or per <br />event may vary based on field acceptance of the material. Injection frequency and <br />volumes will be adjusted based on field conditions and observations. <br />PROGRESS/CONFIRMATION/COMPLIANCE MONITORING AND SAMPLING <br />Performance of progress/confirmation sampling will be completed following the initial <br />four tri-weekly (every three weeks) injection events. Progress/confirmation testing will <br />Advanced GeoEnvironmental, Inc.