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TABLE 1 <br /> SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS <br /> Gardner Property,Thornton,CA <br /> Page T of 7 <br /> (measured in feet MSL) (Reported in u A) <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 Oxygen <br /> Muni 10/29/91 NS NM NM <0 30 <0 30 c0 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 /> 06128/96 NS NM NM <0 5 <0 5 <0 5 <0 5 <50 — — <br /> 10/04/96 NS NM NM <0 50 <0 50 <0 50 <0 50 <50 — - <br /> 12117/96 NS NM N M <0 5 <0 5 <0 5 <0 5 c50 — — <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 <0 5 <05 <0 5 <0 5 <50 — <MDLs <br /> 12/16/97 NS 16 90" NS <0 5 <0 5 <0 5 <2 <50 — — <br /> 03/20198 NS 11511* NS <0 5 <0 5 <0 5 <2 <50 <5 <MDLs <br /> 06/30/98 NS 2192* NS e0 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 /> 1283/98 NS NM NS c0 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 <50 <5 — <br /> 07/09M 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 /> 1288198 NS NM NS <0 500 <0 500 <0 500 <0 500 <50 0 <br /> 0381/00 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 <0 500 <50 0 — — <br /> 09/27/00 NS NM NS <05 <0 5 <0 5 <0 5 <50 — <MDLs — <br /> 1280/00 NS NM NS <0 5 <0 5 <0 5 <0 5 <50 <5 0 — — <br /> 03129/01 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 /> ugA = micrograms per liter or parts per billion <br /> c = 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 503018015 <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 /> W%025WTA0LWT.a.0 r3rnsnoon <br />