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- <br /> Beacon Station Number 610 SSB 92-1001-0393 <br />. 3300 Waterloo Road Page 2 <br /> Stocktott, California <br /> Prior to sampling, water from each well was subjectively analyzed for odor, clarity, and floating <br /> product No hydrocarbon odor or sheen was noted in the water collected from any of the <br /> monitoring wells <br /> Each monitoring well was purged and sampled as per the protocols presented in Appendix A- <br /> Temperature, specific conductance (EC), and pH were monitored as the wells were purged The <br /> final measurements of these parameters for each well are presented in Table 2. <br /> TABLE 2 <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(°F) pH EC (umbos/cm) <br />. MW-5 4/01/93 56 77 390 <br /> 4/16/93 59 79 660 <br /> 7/t2/93 635 7.2 440 <br /> MW-6 4/01/93 58 78 610 <br /> 7/12/93 653 70 570 <br /> MW-7 4/01/93 59 77 650 <br /> 7/12/93 65.7 75 530 <br /> The samples were transported using chain-of-custody Procedures generally described In Test <br /> Methods for Evaluating Solid Waste, S.W-846, U S EPA, Second Edition. Ground-water <br /> sampling methods and chain-of-custody procedures are also presented in Appendix A- <br /> Samples obtained from each well were transported to a State certified laboratory for analysis for <br /> benzene, toluene, ethylbenzene, xylenes (BTEX), and total petroleum hydrocarbons using a <br /> gasoline standard (TPHg) by EPA Methods 602/Purge-and-Trap and 8015/Purge-and-Trap, <br /> respectively. A summary of the results of these and previous analyses is presented in Table 3. <br /> The complete laboratory reports and chain-of-custody documentation are presented in <br /> Appendix B <br /> SSB ENVIRONMENTAL CONSULTANTS, INC <br />