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1 <br /> Eckert Cold Storage Company <br /> 757 Moffat Blvd, Manteca, California <br /> ' Quarterly Groundwater Sampling Report <br /> March, 2401 <br /> ' Narrative <br /> On March 5, 2001, Geo-Analytical Laboratories, Inc., conducted field measurements, <br /> well pumping and groundwater sampling on seven (7) groundwater monitoring wells <br /> located at this site (Figure 1, 2A & 2B). The on-site domestic well was also sampled <br /> during this event. <br /> Groundwater elevations were taken from eight (8) wells prior to pumping (Table 1 & <br /> Appendix B). All monitoring wells were evacuated by means of a steam-cleaned, <br /> ' stainless steel bladder-type pump, except MW-2. The sampler from Geo-Analytical <br /> Laboratories was unable to retrieve water from MW-2. <br /> During the three-(3) volume pump down of each well, samples were collected to measure <br /> field pH, electrical conductivity and temperature (Table 3 & Appendix B). Once stability <br /> was achieved, a minimum of three (3) well volumes was removed and samples were <br /> ' collected with disposable bailers. The samples were then labeled and placed in an ice <br /> chest cooled with Blue Ice®. <br /> ' The samples and trip blank were then logged on a Chain of Custody and transported to <br /> the State-certified Iaboratory, Geo-Analytical Laboratories, Inc., in Modesto, California. <br /> The analyses requested for the water samples was EPA method 8260B for BTX&E <br /> (Benzene, Toluene, Xylene, and Ethyl Benzene), oxygenates, EDB (Ethylene <br /> Dibromide), and 1,2-DCA (1,2-Dichloroethane), EPA method 5030/Luft (GCFID) for <br /> Gasoline, and EPA method 3510/Luft for Diesel. The domestic well on-site was <br /> ' analyzed using EPA method 524.2. The laboratory analytical data, chain of custody <br /> report, and QA/QC documents can be found in Appendix A of this report. <br /> Groundwater Gradient <br /> ' The water level measurements from the eight (8) monitoring wells were used to calculate <br /> the gradient and construct a groundwater gradient map (Figure 3). The groundwater <br /> ' gradient trend for this quarter is NIVE with a downward slope of 0.0028 ft/ft. Historical <br /> gradient maps are included in Appendix C. <br /> 1 <br />