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r r r■ r r r r r r r r r r r■ r■ rr ■■ r �r TABLE 4 ANALYTICAL RESULTS OF GROUND WATER SAMPLES by EPA Methods 8260/8020 PACIFIC PRIDE - SOUTH ELDORADO 3147 South El Dorado Street, Stockton, California {µdl) Sample LD. Sample MTBE DIPE ETBE TAME TBA 1,2-DCA EDB Methanol Ethanol Screen Interval Date EPA Method 8260/8020 12-28-00 ND<50 ND<50 ND<50 ND<50 ND<250 1,200 ND<50 ND<1 0000 ND<2500 03-30-01 ND<30 ND<30 ND<30 ND<30 ND<150 890 ND<30 ND<6000 ND<1500 06-27-01 ND<10 ND<10 ND<10 ND<10 ND<50 830 ND<10 ND<5000 ND<500 09-26-01 ND<10 ND<10 ND<10 ND<10 ND<50 570 ND<10 ND<5000 ND<500 12-20-01 ND<25 ND<25 ND<25 ND<25 ND<125 590 ND<25 ND<12500 ND<1250 03-01-02 ND<50 ND<50 ND<50 ND<50 ND<250 790 ND<50 ND<25000 ND<2500 06-03-02 ND<50 ND<50 ND<50 ND<50 ND<500 630 ND<50 ND<50000 ND<5000 MW-7 12-02-02 ND<5 ND<5 ND<5 ND<5 83 480 ND<5 -- -- 20 to 40 ft 03-20-03 ND<5 ND<5 ND<5 ND<5 58 280 ND<5 06-30-03 ND<33 ND<33 ND<33 ND<33 ND<330 510 ND<33 09-19-03 ND<1 ND<1 ND<1 ND<1 ND<10 450 ND<0.5 -- -- 11-12-03 ND<1 ND<1 ND<1 ND<1 ND<10 660 ND<1 -- -- 03-31-04 ND<1 ND<1 ND<1 ND<1 ND<10 240 ND<1 -- -- 06-17-04 ND<1 ND<1 ND<1 ND<1 ND<10 260 ND<0.5 -- -- 10-01-04 ND<1 ND<1 ND<1 82 ND<10 200 ND<0.5 -- -- 12-10-04 ND<1 ND<1 ND<1 30 ND<10 300 ND<0.5 -- -- 03-15-05 ND<1 ND<1 ND<1 13 ND<10 220 ND<0.5 -- -- 09-19-03 ND<1 ND<1 ND<1 ND<1 ND<10 ND<0.5 ND<0.5 -- 11-12-03 ND<1 ND<1 ND<1 ND<1 ND<10 ND<0.5 ND<0.5 -- -- M.W-SA 03-31-04 ND<1 ND<1 ND<1 ND<1 ND<10 ND<0.5 ND<0.5 -- -- SS to 75 ft 06-17-04 ND<1 ND<1 ND<1 ND<1 ND<10 ND<0.5 ND<0.5 10-01-04 ND<1 ND<1 ND<1 ND<1 ND<10 ND<0,5 ND<0.5 12-10-04 ND<1 ND<1 ND<1 ND<1 ND<10 ND<0.5 ND<0.5 -- -- 03-15-05 -- -= -- -- -- - -- Advanced GeoEnvironmental,Inc.