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19 November 2004 AGE-NC Project No. 95-0184 Page 3 of 6 be surveyed by a state licensed surveyor.Procedures for well installation,development and surveying are presented in Sections 4.2. and 4.3.. 3.4. GROUND WATER EXTRACTION (PUMPING) TEST AGE proposes to utilize the newly-installed extraction well EW-1 to perform an 8-hour step draw- down pumping test and a 12-hour aquifer constant rate pumping test at the site to: 1) evaluate the general zones of capture (radii of influence) achievable during ground water extraction at the site, 2) obtain general aquifer characteristics such as hydraulic conductivity, storativity, transmissivity, and draw-down at a constant pumping rate,and 3)evaluate the feasibility of ground water extraction as a remedial alternative at the site. A constant ground water pumping rate for the 12-hour aquifer pumping test will be based on the results of the 8-hour pumping test and the availability of storage for the produced water.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. During the 12-hour pump test,grab ground water samples will be taken from the effluent line during selected portions of the pump-test. The ground water samples will be collected into laboratory- supplied 40-milliliter(ml) volatile organic analysis (VOA) vials containing 0.5 ml of hydrochloric acid as preservative and into one-liter amber glass containers without a sample preservative. Care will be taken to ensure that visible air bubbles are not present in the vials after filling and capping. Following collection the samples will be appropriately labeled, placed on ice and kept in a cooler until delivered to a DHS-certified analytical laboratory for analysis. COC protocols will be used to document sample custody transfer from the field to the laboratory; a COC form will accompany the samples. All pumping test procedures are described in Section 4.4. 6 tO 34nta "4'e �.(_. cz-sr4°l1z:�w{A444-1 V* A Capt 4S�o�/ 3.5. PREPARATION OF REPORT OF FINDINGS q , Following extraction well installation and performance of the pumping test,a report will be prepared presenting the findings. The report will include a description of work performed and the results of. 1) soil sampling and analysis and 2)the pumping test. Conclusions and recommendations will also be included in the reports, if applicable. The report will be in a format acceptable to the EHD and the California Regional Water Qualaity Control Board(RWQCB), and will be reviewed and signed by a California Registered Geologist. Advanced GeoEnvironmental,Inc.