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17 April 2006 AGE-NC Project No. 04-1207 Page 4 of 9 provide vapor extraction data for feasibility analysis for the proper design of the remediation system. The SVE pilot test specifications are presented in Section 4.2.1.. 3.5. GROUND WATER EXTRACTION (AQUIFER PUMPING) TEST AGE proposes to utilize existing ground water monitoring well MW-1 to perform an 8-hour step draw-down pumping test and a 24-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 24-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 24-hour test,the test period will be increased to 48 hours. The pumping test may require up to 72 hours because of the slow percolation of water in the stratified deposit commonly found in the Central Valley alluvial soils.In no event should the aquifer test be terminated prior to aquifer stabilization,because the limited data may not exhibit the nature of the aquifer. During the 8-hour pump test,grab ground water samples will be taken from the effluent line during selected portions of the test; approximately every 2 hours. The ground water samples will be collected into laboratory-supplied 40-milliliter(ml)volatile organic analysis(VOA)vials containing 0.5 ml of 18%hydrochloric acid solution as a 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. Chain of custody protocols will be used to document sample custody transfer from the field to the laboratory; a chain of custody form will accompany the samples. All pumping test procedures are described in Section 4.3.. 3.6. PREPARATION OF REPORT OF FINDINGS Following soil boring advancement, SVE well installation,and the performance of feasibility tests, a report will be prepared presenting the findings. The report will include a description of the work performed and the results of: 1)soil sampling and analysis,2)the SVE pilot test,and 3)the ground water extraction tests. Advanced GeoEnvironmental,Inc.