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07 January 2002 AGE-NC Project No 96-0263 Page 4 of 7 two feet of screen section extending above the water level and thirteen feet of screen section extending below the water table level Based on ground water table level, It is anticipated that the total depths of the wells will be approximately 20 feet bsg Following Installation,the wells will be developed to maximize water flow and minimize the amount of fine-grained sediment drawn Into the well during pumping or balling Procedures for well completion and development are presented in Sections 4 2 and 4 3 , respectively 3 4 GROUND WATER EXTRACTION (PUMP) TEST AGE proposes an 8-hour step drawdown pump test and a 12-hour aquifer constant rate pump test to be conducted at the site to better predict a general radius of Influence for ground water extraction wells and to evaluate the feasibility of ground water extraction as a remediation alternative at the site If it appears that steady state conditions have not been achieved at the end of the 12-hour test, the test period will be Increased to 24 hours The proposed extraction well will be utilized as the extraction point during the pump tests Wells MW-1 through MW-11 and the new observation well � . will be utilized as observation points The tests will be utilized to evaluate the general zones of capture (radius of Influence) achievable during ground water extraction at the site and to obtain general aquifer characteristics such as hydraulic conductivity, storativity,transmissivity, and draw- down at a constant pumping rate Sollnst Leveloggers will be deployed in wells MW-2, MW-7, the new observation well, and the proposed extraction well, to measure difference in ground water levels before well pumping versus time during well pumping Water level measurements will be manually taken from wells MW-1 through MW-11 at timed intervals A constant ground water pumping rate for the 12-hour (or 24-hour)aquifer pump test will be determined from the results of the 8-hour pump test and available storage for produced water Results of the pilot test will be utilized to assess the feasibility of ground water extraction at the site Pump test procedures are described In Section 4 4 and a summary of the pilot test elements are summarized on Table 8 35 REPORT PREPARATION Following the completion of the investigation a report will be prepared presenting the findings The report will Include a description ofwork performed and the results of the soil/ground water sampling and analysis Conclusions and recommendations will also be included In the reports, if applicable The report will be in a format acceptable to the PHS-EHD and the CVRWQCB guidelines. and will be reviewed and signed by a California Registered Geologist Advanced CeoEnvironmental,Inc