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11 March 2014 <br />AGE Project No. 96-0236 <br />Page 28 of 32 <br />INJECTION WELL INSTALLATION AND DEVELOPMENT <br />Proposed pilot borings will be single-completed as shallow and intermediate injection <br />wells. The proposed shallow injection wells be screened at depths of approximately 10 <br />feet to 25 feet bsg and the intermediate injection wells will be screened from 30 to 50 <br />feet bsg. Depth of the screened intervals may vary or be reduced overall according to <br />hydrogeologic conditions encountered while drilling. Following installation, each well will <br />be developed to maximize water flow and minimize the amount of fine-grained sediment <br />drawn into the well during pumping or bailing, and to maximize the efficiency of ISCO <br />injections. As built diagrams of the proposed designs of the injection wells have been <br />included as Figures 21 and 22. <br />REMEDIATION WELL INSTALLATION REPORT OF FINDINGS <br />A report documenting the findings of the remedial well installations and development will <br />be prepared following performance of field work and receipt of all applicable data. The <br />report will include a description of work performed and the results of sampling and <br />analysis. Conclusions and recommendations will also be included, if applicable in the <br />report. All reports will be in a format acceptable to the EHD and CVRWQCB, and will be <br />reviewed and signed by a California Professional Geologist. <br />ISCO APPLICATION <br />Upon regulatory approval, AGE will conduct four initial tri-weekly ISCO applications <br />utilizing wells MW-1A/B, DPE-1, DPE-2, MW-2, MW-3, MW-4, MW-9, MW-15, MW-17 <br />and the sixteen proposed injection wells. A 5% solution of hydrogen peroxide will be <br />applied to each well during the proposed four tri-weekly events. Baseline/background <br />and progress sampling will be performed using wells MW-1A/B, DPE-1, DPE-2, MW-2, <br />MW-3, MW-4, MW-9, MW-15, MW-17 and MW-19. Additionally, post-ISCO sampling will <br />be conducted two months following the performance of the final injection event. Field <br />parameters and laboratory samples will be collected and analyzed as described below: <br />Field Parameters: <br />Depth to water will be measured in shallow and intermediate groundwater <br />monitoring wells MW-1A/B, DPE-1, DPE-2, MW-2, MW-3, MW-4, MW-9, MW-15, <br />MW-17 and MW-19. <br />Prior to each purge volume, temperature, pH, TDS, oxygen reduction potential <br />(ORP), salinity, turbidity, and dissolved oxygen (DO) will be recorded at the <br />monitoring wells. <br />.4dvanced GeoEnvironmenta I, Inc.