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TABLE 1 <br /> SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS <br /> Gardner Property,Thornton,CA <br /> Page 7 of 7 <br /> �J (measured in feet MSL) (Reported in ug/l) <br /> Well ID Date Wellhead Depth to G W Benzene Toluene Ethyl Xylenes TPHg MTBE Fuel Dissoved <br /> Elev Water Elev Benzene (EPA 8020) Oxygenates I Oxygen <br /> Muni 10/29/91 NS NM NM <0 30 <0 30 <0 30 <0 30 <30 <br /> Well 12/03/92 NS NM NM <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 03/29/96 NS NM NM <0 5 <0 5 <0 5 <0 5 <50 - <br /> 06/28/96 NS NM NM <0 5 <0 5 <05 <0 5 <50 - <br /> 10/04/96 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 <60 -- <br /> 09/16/97 NS NM NM <0 5 <0 5 <0 5 <0 5 <50 <MDLs <br /> 12/16/97 NS 16 90' NS <0 5 <0 5 <0 5 <2 <50 -- <br /> 03120198 NS 11 51` NS <0 5 <0 5 <0 5 <2 <50 <5 <MDLs <br /> 06/30/98 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 /> 12123/98 NS NM NS <0 50 <0 50 <0 50 <0 50 <50 <2 5 <br /> 04/05/99 NS NM NS <0 50 <0 50 <0 50 <0 50 <60 <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 /> 12128199 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 N$ NM NS <0 500 <0 500 <0 500 <0 500 <50 0 -- <br /> 09/27/00 NS NM NS <0 5 <0 5 <0 5 <0 5 <50 -- <MDLs <br /> 12/20/00 NS NM NS <0 5 <0 5 <0 5 <0 5 <50 <5 0 - <br /> 03/29/01 NS NM NS <0 5 <0 5 <05 <0 5 <50 <5 0 <br /> 06/18/01 NS NM NS <0 5 <0 5 <0 5 <0 5 <50 <5 0 -- <br /> 09/24/01 NS NM NS <0 5 <0 5 <0 5 <0 5 <50 <5 0 <br /> Notes <br /> ft MSL = feet Mean Sea Level assuming ground surface datum is 10 feet above MSL(USGS 7 5 minute Thornton Quadrangle) <br /> ug/I = micrograms per liter or parts per billion <br /> < = not detected at or above Stated Method Detection Limit(MDL) <br /> = not sampled/not analyzed <br /> TPHg = Total Petroleum Hydrocarbons 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(MTBE)by EPA Method 8020 unless noted <br /> NM = Not Monitored <br /> NS = Not Surveyed <br /> = measurement collected from top of sounding tube <br /> Fuel Oxygenates by EPA Method 8260 includes ethonol t-butanol MTBE DIPE ETBE and TAME See Laboratory Data Sheets for <br /> MDLs <br /> Dissoved Oxygen by EPA Method 360 1 <br /> ..MTBE by EPA Method 8260 <br /> WZ25SZTABLE8%TeblegW=1 tUrA011 <br />