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• <br /> Table 2. Groundwater Chemical Data, con't. <br /> Well Date TPHG Benzene Toluene Ethylbenzene Xylene MTBE DW 4_�-C-� <br /> NoSampled -----------------------------ug/I ------------------------------- -- <br /> MW-2 3/28/96 12,000 8 0 5 0 7 7 20 NA 709 Y& <br /> MW-2 6/27/96 4,900 7 2 4 8 21 25 NA -7, 70 4(a C" <br /> MW-2 9/23/96 4,500 5 9 2 8 15 14 NA S-3g 3g & <br /> MW-2 12/19/96 4,400 9 9 8 6 25 26 ND 7 1�5 go;,L11 <br /> MW-3 3/28/96 2,500 21 12 12 24 NA 1P,g0 '"( off <br /> MW-3 6/27/96 3,100 13 7 0 87 19 NA -7,--3-7 41. <br /> MW-3 9/23/96 2,600 19 88 11 19 NA ?1 r U 37.7 <br /> MW-3 12/19/96 2,900 12 84 81 16 ND 7,-a5 { 0 `3 <br /> Blank 12/19/96 ND ND ND ND ND ND <br /> ND- None detected NA - Not Analyzed ug/I - micrograms per liter <br /> Discussion <br /> A relatively moderate to slow groundwater movement is inferred from the groundwater <br />• measurement data Overall site shallow groundwater movement is north-northeasterly The <br /> flow direction is consistent with the observed trends, but could be influenced by recent heavy <br /> rainfall and regional flooding Concentrations of TPHG were observed to the Wells MW-2 and <br /> MW-3 declined slightly and contaminants were not observed in MW-1 These represent <br /> degraded fuel and are interpreted to be residual drainage. Fluctuating levels of degraded fuel <br /> contaminants, showing an overall declining trend are anticipated in the future <br /> Monitoring Schedule <br /> The continuation of the quarterly groundwater monitoring program is recommended for this <br /> site <br /> Limitations <br /> This report has been prepared specifically for the Mr Ed's Muffler Site at 595 E 1 1 th Street <br /> in Tracy, and was done according to the current State and local agency suggested guidance <br /> documents for these investigations The interpretations, conclusions and recommendations made <br /> herein are based on the data and analysis for the soil and water samples collected on-site and <br /> should be reviewed in the context of this report and other studies Please note that reports of <br /> contamination must be submitted to the agencies in a timely manner Wright Environmental <br /> Services, Inc is not responsible for errors in laboratory analysis and reporting, nor for <br />• information not available during the course of the study, and no warranty or guarantee is <br /> expressed or implied therein <br /> Mr Ed's Project No 4090-P Page 3 <br />