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AT&T- Lodi, Quarterly Groundwater Monitoring Report No 2 <br /> ATC Protect No 75 75128 0001 <br /> Page 5, May 4, 2001 <br /> Groundwater initially removed from each morutonng well was clear month no floating product, no sheen <br /> and no hydrocarbon odor With continued bailing of the wells suspended clays and silts were <br /> observed in the water throughout removal of the three well volumes prior to sampling <br /> 5.2 LABORATORY ANALYTICAL RESULTS <br /> tA summary of the groundwater sample chemical test results are presented in Table 1 Laboratory <br /> reports for all tests are included in Appendix C A total of three groundwater samples were collected <br /> on March 28, 2001 and submitted for laboratory analysts The groundwater samples had no detectable <br /> concentrations of TPH-D, BTEX, or MTBE, with the exception of TPH-D at 150 ug/L in MW3 <br /> TABLE 5-1 <br /> GROUNDWATER ANALYTICAL RESULTS <br /> March 28,2001 <br /> Well Collection TPH-D Benzene Ethyl- Toluene Total MTBE <br /> Number Date (ug/L) (uglL) benzene (ug/L) Xylenes (uglL) <br /> (ugfL) OWL) <br /> MW 1 12/18/00 ND ND ND ND ND ND <br /> 3128101 ND ND ND ND ND ND <br /> MW2 12/18/00 ND ND ND ND ND ND <br /> 3128101 ND ND ND ND ND i ND <br /> MW3 12/18/00 ND ND ND ND ND ND <br /> 3128101 150 ND ND ND ND ND <br /> Laboratory -- 50 050 050 050 0 50 5 0 <br /> Reporting <br /> Limits <br /> ug/L mierogrvns per Mer <br /> ND Not detected 1t or above the indicated laboratory reporting limit <br /> TPH-D Total Petroleum Hydrocarbons-Diesel Fuel <br /> MTBE Methyl Tert Butyl Ether <br /> i <br /> 6.0 CONCLUSIONS AND RECOMMENDATIONS <br /> AT&T performed the second quarter of momtonng on three groundwater quality monitoring wells at <br /> the subject AT&T, microwave relay facihty Groundwater samples collected from these wells were <br /> found to have no detected concentrations of BTEX, or MTBE TPH-D was found to have no <br /> detected concentrations in wells MW 1 and MW2 TPH-D was detected in well MW3 at a <br /> concentration of 150 micrograms per liter(ug/L) This represents a change from the previous quarter <br /> when TPH-D was not detected in any of the wells <br />