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TABLE 2 <br /> SUMMARY OF GROUNDWATER ANALYTICAL RESULTS <br /> Wing Island Resort <br /> Stockton, California <br /> Page 11 of 11 <br /> Well ID Well Depth to Groundwater TPHg 7PHd Benzene TOlueoe Ethylbenzene Xylenes MTBE TBA TBA - MTBE Lead <br /> Screen interval in feet s Date Elevation Water Elevation u lL a lL u /L u u /L U /L u u 11 ratio " u fl <br /> Domestic Well (cont) 12/22/08 - _ _ <50 - <0.5 <0.5 <0.5 <1.0 <0S e5.0 <1A <br /> deep (110'-120) 03/12109 - - - <50 - <0.5 <0.5 <05 <1.0 <0.5 <5.0 - <1 .0 <br /> 06/03/09 - - _ <50 - 40.5 <0.5 <0.5 41.0 <q5 <5.0 - <br /> 09/02/09 - - _ <50 - <0.5 <0.5 <OS <1.0 <0.5 <5.0 <br /> Trailer Park Domestic Well 09/02/09 - - _ <50 - <0.5 <0.5 <0.5 <1.0 <0,5 <5.0 - <br /> deep <br /> NOTES: <br /> MTBE = Methyl tertiarybutyl ether by EPA Method 8020 or 8260B <br /> BTEX = By EPA Method 8020, 80216, or 82608 <br /> 7PHg = Total Petroleum Hydrocarbons as Gasoline by Modified EPA Method 8015M or 86158 <br /> TPHd = Total Petroleum Hydrocarbons as Diesel by Modred EPA Method 8015 <br /> ug/L = micrograms per liter <br /> = Not Detected at or Above Stated Detection Limits <br /> = Chromatogram does not match diesel standard. <br /> = 7BA - MTSE ratio derived by dividing TBA by MTBE. When less than (<) values occur, one-half the reporting limit value vvas used <br /> - = Not analyzed and/or measured <br /> ♦ = Unpreserved sample collected to evaluate potential acid-catalyzed hydrolysis effects <br /> Blank cell reflects data not readily available <br /> Starting 12-04.02, samples analyzed forfuel oxygenates by EPA Method 82606; including t-Butanol, Di-isopropyl ether, Ethykt-butyl ether, and t-Amyl methyl ether <br />