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Bees Environmental Management Inc 4th Qtr 2003 Groundwater Momtonng Report <br /> 002-70950-04 <br /> U-Haul#709-50 <br /> 3 0 GROUNDWATER MONITORING PROGRAM <br /> The groundwater monitoring program discussed below includes one monitoringv <br /> event conducted in <br /> December 2003 At the request of SJCEHD, this groundwater monitoring event was coordinated with <br /> Ground Zero Analysis (GZA), the consultant for the Former Harry's Auto Mart site located southeast of <br /> the U-Haul facility The measurement and sampling methods employed throughout the groundwater <br /> monitoring event are discussed in the following sections <br /> 3 1 GROUNDWATER MEASUREMENTS —DECEMBER 2003 <br /> On December 8, 2003, BIaes Environmental measured the depth to groundwater in the 29 groundwater <br /> monitor well casings associated with the U-Haul site Groundwater levels in the well casings were <br /> measured from a surveyed point on the top of the monitoring well casing to the groundwater surface All <br /> water levels were measured to the nearest hundredth of a foot (0 01 ft) using a Heron electronic water- <br /> level sounder The water level depth and time of measurement were recorded on a standard field data <br /> sheet The field data sheets for this monitoring event are included in Appendix A and tabulated with <br /> previous monitoring data in Table 2 Groundwater depth measurements were performed in accordance <br /> with Blaes Environmental groundwater monitoring procedures presented in Appendix B <br /> Groundwater depths recorded on December 8, 2003, ranged from approximately 55 29 feet below top of <br /> casing (btoc) in well MW-7C to approximately 58 30 feet btoc in well MW-6C Groundwater elevations <br /> ranged from approximately 37 29 feet below mean sea level in well MW-3C to approximately 37 68 feet <br /> below mean sea level in well MW-9B (Table 2) Monitor well MW-3B contained approximately 0 52 <br /> feet of free-phase hydrocarbons and was therefore not sampled during this sampling event Other <br /> observations collected during groundwater monitoring activities are presented on the field data sheet <br /> included in Appendix A <br /> 6 <br />