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GEOMA RIX TABLE 3 Page 2 of 2 GROUNDWATER ANALYTICAL DATA ' UST Site No 3 -Port of Stockton Stockton,California ' Volatiles (U S EPA Method 8264) Results in 11a Dissolved Momtoring TPI;g2 Lead ' Well Date B T E X MtBE MW3-3 11/25/02 1,540 12 110 47 181 na na (Cont) 02/20/03 4,000 14 250 77 330 na na 05/28/03 710 16 279 71 139 na na ' 08/22/03 8,650 51 709 137 587 na na 10/16/035 No Sample Collected MW3-4 02/20/03fi <20 <0 5 <0 5 <0 5 <0 5 <0 5 <3 ' 05/29/03 <50 <0 5 <0 5 <0 5 <0 5 na na 08/22/03 570 <1 0 735 342 17 1 na na 10/16/03 <50 <1 0 396 171 73 na na MW3-5 02/20/03 <20 <0 5 <0 5 <0 5 <0 5 <0 5 37 ' 05/29/03 <50 <0 5 <0 5 <0 5 <0 5 na na 08/22/03 <50 <10 222 1 11 336 na na 10/16/03 <50 <10 <10 <10 <10 na na ' MW3-6 02/20/03 6,800 1,700 80 69 280 <0 5 3 1 05/29/03 1,000 1,030 85 59 110 na na 08/22/03 7,970 1,890 614 658 249 na na 10/16/03 688 875 253 166 83 na na I Monitoring well locations are shown on Figure 2 2 TPUg-total petroleum hydrocarbons quantified as gasoline analyzed using U S Environmental Protection Agency (EPA)Method 8015M results reported to micrograms per Mer(µg/l-) 3 B benzene T-toluene,E-ethytbenzene,X-total xylenes(sum of m p-xylene and o-xylene), MtBE-methyl tertiary butyl ether Results reported toµg/L na-was not analyzed for constituent ND-not detected for constituent ' 4 Dissolved lead analyzed using U S EPA Method 6010B results reported in gg/L. 5 No sample collected on October 16,2003 because a temporary earth ramp covered the well MW3-3 location 6 Sample was also analyzed for 1 2-dtchlaroethene ditsopropyl ether ethyl tertiary butyl ether and tertiary amyl methyl ether using U S EPA Method 8260 These constituents were not detected ' 7 <=less than the Detection Limit for Purpose of Reporting 1 1 ]\PRO]EC VVfts\6437 OOUVA37 16 xis