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BIaBs Environmental Management Inc U-Haul#709-50 002-70950-03 Groundwater Monitoring Report 10/22/01 1) The vertical and lateral extent of petroleum contamination is not defined and further investigation is required 2) A work plan for future investigation of the vertical and lateral delineation of hydrocarbon impact and proposed remedial testing is due to the SJC within 60 days of the letter date 3) Upon completion of remedial testing and further investigation activities, a corrective action plan is required for submittal 4) A schedule of planned activities and proposed task completion dates Following completion of this groundwater monitoring event and pursuant to a directive from the SJC, Amerco/U-Haul will begin remedial feasibility testing at the site 14 PROGRAM OBJECTIVES The objective of the quarterly groundwater monitoring program was to provide additional data (monitoring and analytical data) to further evaluate groundwater conditions beneath the site 15 SCOPE OF WORK The current quarterly monitoring event was conducted in September 2001 The monitoring event involved the following tasks 1) collecting field measurements of groundwater conditions from all of the well casings in each of the well locations, 2) purging monitoring wells prior to collecting groundwater samples, 3) storing and profiling purged groundwater for disposal/treatment, 4) analyzing groundwater samples, and 5)preparation of this report 1 b PROJECT TEAM The project team consisted of Blaes Environmental of Phoenix, Arizona and Del Mar Analytical, Inc (Del Mar), a California State certified analytical laboratory located in Irvine, California Blaes Environmental coordinated and managed the project, performed field measurements, collected, sealed and arranged for proper transport of the groundwater samples to the analytical laboratory, and prepared this report Del Mar provided sample containers and laboratory analysis of groundwater samples collected at the site 2