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1 <br />' Beacon Cardlock Station Number 610 SSB 92-1001-02 <br /> 3300 Waterloo Road Page 6 <br /> Stockton, California <br /> 3.4 Subjective Analysis of Ground-Water Samples <br /> IEach new monitoring well (MW-5, MW-6, and MW-7) was developed by surging and balling on <br /> April 1, 2993 Temperature, pH, and electrical conductivity measurements were taken as the wells <br />' were developed. Monitoring well MW-5 was purged and resampled on April 16, 1993 <br /> Temperature, pH, and electrical conductivity measurements were taken as the well was purged. The <br />' final values for these properties are presented on Table 3 <br />' TABLE 3 <br /> STABILIZED READINGS - TEMPERATURE, pH, AND EC <br />' FOR GROUND-WATER SAMPLES <br /> Beacon Cardlock Station Number 610 <br /> 3300 Waterloo Road <br /> Stockton, California <br />' Well Date Temperature (OF) pH EC (umhos/cm) <br /> MW-5 4/01/93 56 77 390 <br /> MW-6 4/01/93 58 78 610 <br /> MW-7 4/01/93 59 77 650 <br />' MW-5 4/16/93 59 79 660 <br />' On April 1 and 16, 1993, prior to development and purging and again before sampling, each <br /> monitoring well was subjectively analyzed for visual evidence of floating product and odor No <br /> floating product, sheen, or odor was noted in the water collected from the three monitoring wells. <br /> 3.5 Ground-Water Sample Analytical Results <br /> Ground-water samples collected from each of the monitoring wells were submitted to a State <br />' certified laboratory for analysis for selected gasoline constituents The results of the analyses are <br /> presented In Table 4. The complete analyses, quality assurance data, and chain-of-custody <br />' documentation are presented in Appendix B <br />' SSB ENVIRONMENTAL CONSULTANTS, INC <br />