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s • <br />12 December 2014 <br />AGE Project No. 12-2169 <br />Page 5 of 7 <br />WELL INSTALLATION AND DEVELOPMENT <br />Proposed pilot borings will be single -completed as shallow and intermediate injection <br />wells. The proposed injection wells will be screened at depths between approximately <br />30 and 40 feet bsg and from 50 feet and 65 feet bsg. Depths of the screened intervals <br />may vary or be reduced overall according to hydrogeologic conditions encountered <br />during drilling. Following installation, each well will be developed to maximize water flow <br />and minimize the amount of fine-grained sediment drawn into the well during pumping <br />or bailing, and to maximize the efficiency of ISCO injections. As built diagrams of the <br />proposed design of the injection wells and monitoring wells has been included as <br />Figures 4 and 5. <br />WELL INSTALLATION REPORT OF FINDINGS <br />A report documenting the findings of the well installations and development will be <br />prepared following performance of field work. The report will include a description of <br />work performed and the results of sampling and analysis. Conclusions and <br />recommendations will also be included, if applicable in the report. All reports will be in a <br />format acceptable to CVRWQCB, and will be reviewed and signed by a California <br />Professional Geologist. <br />FIELD PROCEDURES <br />All field procedures will be overseen by an AGE representative under the supervision of <br />a California Professional Geologist. Procedures for the well installation and completion, <br />soil sample collection and analysis, well development and well sampling, and ISCO <br />injections are described below. <br />BORING ADVANCEMENT <br />Utilizing a truck- or track -mounted, hollow -stem drill rig equipped with 8.25 -inch <br />diameter hollow -stem augers, two pilot borings will be advanced to 40 feet bsg (shallow <br />injection) and two pilot soil borings will be advanced to a depth of approximately 65 feet <br />bsg (intermediate injection). Soil samples will not be collected during the installation. <br />WELL COMPLETION <br />The pilot soil borings will be completed as shallow and intermediate injection wells <br />utilizing two-inch diameter, Schedule 40 PVC blank well casing and 0.020 -inch slotted <br />well screen. For shallow wells screen will be installed from 30 to 40 feet bsg; for deep <br />Advanced GeoEnvironmental, Inc. <br />