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11/'36/2000 17: 34 209-579-7--5 MODESTO ATC PAGE 02 <br /> TABLE 1 <br /> SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS <br /> Gardner Property,Thornton,CA <br /> Page 7 of 7 <br /> measured In feet MSL) (Reported in u A <br /> Wall/Boring ID Date Wellhead Depth to G W, Benzene Toluene Ethyl Xylenes TPHp MTBE Fuel Dissoved <br /> Elev. Water Elev. Benzene (EPA 8020) Oxygenates Oxygen <br /> Muni 10/29/91 NS NM NM <0.30 <0.30 <0.30 <0 30 <30 <br /> Wall 12/03/92 NS NM NM <0,5 <0.5 <0.5 <0.5 <50 M <br /> 03129418 NS NM NM <0,5 <0.5 <0.5 <0 5 <50 <br /> 06/28/96 N5 NM NM <0.5 <0,5 <0.5 <0.5 <50 <br /> 10/04/86 NS NM NM <0.50 <0.50 <0.50 <0.50 <50 <br /> 12/17/96 NS NM NM <0.5 <0.5 <0.5 <0.5 <50 <br /> 03/25/97 NS NM NM <0,50 <0.50 <0,50 <0.50 <50 <br /> 06/25/97 NS NM NM <0,5 <0.5 <0.5 <0.5 <50 -- <br /> 09/18/97 NS NM NM 10.5 <0.5 <0.5 <0,5 <50 <MDLe <br /> 12/15/97 NS 16.90' NS <0.5 <0,5 <0.5 <2 <50 .. _ <br /> 03/20/98 N$ 11.51" N$ <0.5 <0.5 <0.5 <2 <50 <5 cMDLs <br /> 015/30198 NS 21.92' NS <0,50 <0.50 <0.50 <0.50 <50 <MDLs -- <br /> 09/29/98 NS NM NS <0.50 <0.50 <0.50 <0,50 <50 - <br /> 12/23/98 NS NM NS <0.50 <0.60 <0.50 <0,50 <50 <2,5 <br /> 04/05/99 NS NM NS <0.50 <0.50 <0.50 <0.5o <50 <5 <br /> 07/09/99 NS NM NS <0.50 <0.50 <0,50 <0.50 <50 <2.5 <br /> 10/07/99 NS NM NS <0,500 <0.500 <0,500 <0.500 <50.0 <br /> 12/28/99 NS NM NS <0.500 <0.500 <0.500 <0.500 <50.0 _ <br /> 03/21/00 NS NM NS <0.500 <0.500 <0-500 <0.500 <50.0 <2.5 <br /> 07/13/00 NS NM NS <0.500 <0.500 <0,500 <0.5D0 <50.0 -- <br /> 09/27/00 1 NS I NM NS <0.5 <0.5 <0.5 <0,5 150 <MDLs <br /> measured In fest BGS (Reported In u 1l) <br /> Well/Boring ID <br /> Data Sample Sample Benzene Toluene Ethyl Xylenes TPHg MTBE Fuel Dissoved <br /> 10 Depth Benzene EPA 8020) Ox enates Oxy en <br /> SB5 11/27/95 SB5•GW 15 <0.5 <0,5 <0.5 <0,5 <50 � .. <br /> SB7 11/27/96 SB7-GW-10 10 <0.5 <0.5 <0.5 <0.5 <50 - <br /> 567 11/27/96 SB7•GW-28 1 28 <D.5 <0.5 <0.5 <0.5 <50 <br /> Notes: <br /> 14 MSL feet,Mean Sea Level,assuming ground surfaoa datum is 10 feet above MSL(USGS 7.5 minute Thornton Ouadrangle), <br /> ft. BGS feet below ground surface. <br /> ug/I - micrograms per liter or parts per billion. <br /> < not detected at or above Stated Method Detectlon Limit(MDL). <br /> a not sampled/not analyzed. <br /> TPHg - Total Petroleum Hydrooaftns as gasoline,analyzed by EPA Method 5030/8015. <br /> Benzene by EPA Method 8020. <br /> Toluene by EPA Method 8020. <br /> Ethylbenzene by EPA Method 8020. <br /> Total Xylenes by EPA Method 8020. <br /> Methy-t-butyl ether(MTBIm)by EPA Method 8020. <br /> NM = Not Monitored. <br /> NS = Not Surveyed. <br /> measurement collected from top of sounding tube. <br /> Fuel Oxygenates by EPA Method 8260 Incudes ethonol,t-butanol, MTBE,DIPE,ETRE,and TAME. See Laboratory Data Sheets for <br /> MDLs. <br /> Dissoved Oxygen by EPA Method 360.1. <br /> W*268Z7A6L6mrAg,EOW w 96.(111oea ) <br />