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' Blaes Environmental Management Inc 310 Qtr 2003 Groundwater Monitonng Report <br /> 002-70950-04 <br /> U-Haul#709-SO <br /> • 3 0 GROUNDWATER MONITORING PROGRAM <br /> The groundwater monitoring program discussed below includes one monitoring event conducted in <br /> September 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 /> Imonitoring event are discussed in the following sections <br /> 3 1 GROUNDWATER MEASUREMENTS — SEPTEMBER 2003 <br /> On September 8, 2003, Blaes Environmental measured the depth to groundwater in the 29 groundwater <br /> monitor well casings associated with the U-Haul site Groundwater Ievels 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 September 8, 2003, ranged from approximately 59 23 feet below top of <br /> casing (btoc) in well MW-10B to approximately 63 71 feet btoc in well MW-2C Groundwater <br /> elevations ranged from approximately 40 94 feet below mean sea Ievel in well MW-10B to <br /> approximately 43 19 feet below mean sea level in well MW-2C (Table 2) Monitor well MW-3B <br /> contained approximately 1 26 feet of free-phase hydrocarbons and was therefore not sampled dunng this <br /> sampling event Other observations collected during groundwater monitoring activities are presented on <br /> the field data sheet included in Appendix A <br /> . 6 <br /> I <br />