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e <br /> 7-Eleven/Stockton 11 <br /> April, 1988 <br /> analyzed for benzene, toluene, ethylbenzene, xylenes (BTEX) and <br /> total petroleum hydrocarbons (TPH) as gasoline by U.S. Environ- <br /> mental Protection Agency (EPA) Modified Method 602. The sampling <br /> intervals during this period for the wells on and near the site, <br /> were as follows: <br /> �- Monitoring wells and pumping wells without free <br /> product: twice a month. <br /> Domestic wells 91.60, TMG, 1927, 1912 and 8968: twice a <br /> month. <br /> ° Domestic wells 9140, 9159, 9156, and Ivy Motel: <br /> monthly. <br /> The results of the water sample laboratory analyses for the <br /> v„ period are summarized in Table 2 of Appendix I. The laboratory <br /> test results and method detection limits (MDL) for the analyses <br /> performed are presented in Appendix III - Laboratory Results, In <br /> addition, Dissolved Plume Maps (Figure 8, 9, 10, and 11) , were <br /> constructed using the laboratory test data from the water samples <br /> " collected on selected dates from each month of the reporting <br /> period. <br /> The BTEX and TPH concentrations from the regularly sampled <br /> domestic wells have generally remained below MAL. Minor concen- <br /> trations of BTEX and TPH were detected in the samples from <br /> domestic wells sampled on November 19, 1987, and on February 11, <br /> 1988, however, these analyses were followed by samples with <br /> concentrations below the MDL in the following sampling period. <br /> GROUN0WATER <br /> �„ Troomi.oGy.INC. <br />