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i • •1 • <br /> Second Quarter 2006 Groundwater Monitoring and Analytical Data <br /> 7 Eleven Store 919976 <br /> 1399 North Main Street <br /> Manteca CA <br /> Weil iD! Ethyl Dlssolved <br /> Elevation Date BenzeneHE <br /> Benzene Xylene TPHg MtBE TBA DIPS ET13E TAME Notes Oxygen DTW SPT WTE <br /> (Tt1C1 (ROL) IMV (M L) f IftgA-1 iM1Yl-) llmk OWL) (t!Ll Im I> (feet) I (feet) (feet! <br /> Ml 04/18/06 64 19 12 10 210 370 49 <0 50 <0 50 15 h 1 1 1 1734 000 1465 <br /> 31 99 05112/06 21 <0 50 44 37 1,000 730 150 <0 50 <0 50 25 1 8 1760 000 1439 <br /> � r <br /> MW 1A 04/18/06 47 36 20 52 360 <0 50 <5 0 <0 50 <0 50 <0 50 1 47 1756 000 1453 <br /> 3209 05/12/06 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 4 5 1786 000 1423 - <br /> Ill 04/18/06 <0 50 <0 50 <0 50 075 <50 13 92 <0 50 <0 50 <0 50 1 129 1656 000 1464 <br /> 31 20 05112!06 50 17 <0 50 42 390 380 76 <0 50 <0 50 068 11 2 1679 000 1441 r <br /> MW 3 04/18106 37 44 28 74 77 <0 50 <5 0 <0 50 <0 50 <0 50 1 39 1723 000 1464 <br /> 31 87 05112106 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 38 1747 000 1440 <br /> MWA 04118/06 — - - - 1 56 1808 000 1465 <br /> 3273 05112/06 — -- - — - 78 1828 000 1445 ✓ <br /> MW-4A 04/18/06 23 37 32 93 < <br /> I 50 <0 50 <50 <0 50 <0 50 <0 50 h 1 28 1788 000 1460 <br /> 3248 05/12/06 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <50 <0 50 <0 50 <0 50 38 1810 000 1438 <br /> MW 5 04/18/06 063 10 096 24 <50 49 96 <0 50 <0 50 <0 50 1 1 6 1731 000 1457 <br /> 31 88 05/12/06 <0 50 <0 50 <0 50 <0 50 <50 34 40 <0 50 <0 50 <0 50 20 1753 000 1435 <br /> r � <br /> MW SA 04118106 22 3 5 22 61 57 <0 50 <5 0 <0 50 <0 50 <0 50 1 32 1691 000 1457 <br /> 31 48 05112/06 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 31 1731 000 1417 <br /> r <br /> MW-6 04118/06 76 10 77 21 160 <0 50 <5 0 <0 50 <0 50 <0 50 1 38 1909 000 1456 <br /> 3365 05112/06 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 29 1932 000 1433 <br /> MW7 04/18/06 75 8855 16 79 87 <50 <050 <050 <050 h1 25 1797 000 1448 <br /> 32 45 05/12/06 <0 50 <0 50 <0 50 <0 50 <50 31 <5 0 <0 50 <0 50 <0 50 23 1809 000 1 4 36 <br /> J <br /> Explanation <br /> TPHg=Total petroleum hydrocarbons as gasoline TAME=Ted amyl--methyl ether MglL=micrograms per liter <br /> MISE=Methykert butyi ether DTW=Depth to water mg1L=milligrams per liter --_ <br /> TBA=Teri butanol SPT=Separate phase hydrocarbon thtekness —=Not sampled/not measured <br /> DIPE=Dnsopropyl ether WTE=Water table elevation <br /> ELBE=E1hyl tert butyl ether TOC=Top of casing elevation in feet above mean sea level <br /> Notes <br /> Samples analyzed by EPA Method 62608 <br /> Per SJCEHD letter dated May 3 2005 wet!MW4 1s sampled semrannualty(in hrst and third quarters) <br /> Due to cross ppntamma4on of samples collected on April 1B 2005 all wells were re-sampled on May 12 2006 <br /> h=Matrix SpikelMatnx Spike Duplicate Results for MtBE were affected by the analyte concentration already present in the un-spiked sample <br /> 1=cross-contamination of wells Wells were re sampled and monitored an May 12 2006 <br /> r <br /> 7 ElevenV 11 Storek140631Tab1es519976 Current Groundwater Page 1 of 1 <br />