Laserfiche WebLink
1 <br /> Eckert Cold Storage Company <br /> 757 Moffat Blvd, Manteca, California <br /> ' Quarterly Groundwater Sampling Report <br /> June, 2000 <br /> Narrative <br /> On June 23, 2000, GeoAnalytical Laboratories, Inc., conducted field measurements, well <br /> ' pumping and groundwater sampling on seven-(7) groundwater monitoring wells located <br /> at this site (Figure 1, 2A& 2B). The on-site domestic well was also sampled during this <br /> 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 GeoAnalytical <br /> Laboratories was unable to retrieve water from MW-2. According to the field logs they <br /> ' . tried various techniques to sample the well, but all failed. <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 laboratory, GeoAnalytical Laboratories, Inc., in Modesto, California. <br /> The analyses requested for the water samples was EPA method 602 for BTX&E <br /> (Benzene, Toluene, Xylene, and Ethyl benzene) and MTBE (Methyl t-butyl ether), EPA <br /> ' method 5030/Luft (GCFID) for Gasoline, and EPA method 3510/Luft for Diesel. The <br /> domestic well on-site was analyzed using EPA method 524.2. The laboratory analytical <br /> data, chain of custody report, and QA/QC documents can be found in Appendix A of this <br /> ' report <br /> ' Groundwater Gradient <br /> The water level measurements from monitoring wells MW-5, MW-6, and MW-7 were <br /> ' used to calculate the gradient and construct a groundwater gradient map (Figure 3). The <br /> gradient for this quarter is N40W at 0.00141I1ft. Historical gradient maps are included in <br /> 1 <br />,1 <br />