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TABLE 4 - CONTINUED Analytical Results of Ground Water Samples by EPA Methods 8015NV8020 PACIFIC PRIDE - SOUTH EL DORADO STREET 3147 El Dorado Street, Stockton, California TPH as TPH as TPH as TPH as MTBE Benzene Toluene Ethyl- X lens Sample I.D./ Sample Gasoline Diesel Kerosene Motor Oil benzene y Screen Interval Date EPA Methods 8015m/8020 12-20-99 ND<50 110 62 NA ND<0 . 5 1.5 0.5 ND<0. 5 0.66 03- 10-00 86 86 NA NA ND<0. 5 2A ND<0. 5 ND<0.5 ND<0.5 0645-00 ND<50 79 71 NA ND<0 . 5 ND<0. 5 ND<0, 5 ND<0.5 ND<0.5 MW 4/ 09-14-00 63 5913 NA NA ND<0 . 5 0.56 ND<0. 5 ND<0.5 ND<0. 5 30 to 50 ft bsg 12-28-00 66 6713 58 NA ND<5 3.6 4.7 1. 1 5.6 03 -30-01 ND<50 1803 NA 270 ND<5 0.74 ND<0 .5 ND<0.5 ND<0.5 06-27-01 ND<50 891 110 NA ND<5 0.67 ND<0. 5 ND<0.5 ND<0.5 09-26-01 ND<50 ND<50 ND<50 NA ND<5 ND<0. 5 ND<0. 5 ND<0.5 ND<0.5 12-20-01 ND<50 ND<50 ND<50 ND<250 ND<5 1. 1 0.64 ND<0 .5 ND<0 . 5 MW-5/ 12-28-00 65 14013 81 NA ND<5 2.1 3.6 1.2 5.7 8o to 90 ft bsg 03-30-01 ND<50 210 13 NA 710 ND<5 ND<0. 5 ND<0. 5 ND<0. 5 ND<0. 5 06-27-01 681 ND<50 ND<50 NA ND<5 4.8 5 3 8. 1 09-26-01 ND<50 881 51 NA ND<5 ND<0 . 5 ND<0. 5 ND<0 . 5 ND<0. 5 12-20-01 ND<50 ND<50 ND<50 ND<250 ND<5 ND<0. 5 0.61 ND<0. 5 IA MW-6 12-28-00 180 ND<50 ND<50 NA ND<5 15 18 6.6 28 20 to 40 ft bsg 03-3O-Ol ND<50 ND<50 NA ND<250 ND<5 ND<0. 5 ND<0. 5 ND<0. 5 ND<0. 5 06-27-01 ND<50 ND<50 ND<50 NA ND<5 ND<0. 5 ND<0. 5 ND<0. 5 ND<0. 5 09-26-01 ND<50 ND<50 ND<50 NA ND<5 ND<0. 5 ND<0. 5 ND<0. 5 ND<0. 5 12-20-01 ND<50 ND<50 ND<50 ND<250 ND<5 ND<0. 5 ND<O .5 ND<0. 5 ND<0. 5 MW-7 12-28-00 67,000 31500 2 21800 NA ND<50 14,000 61100 20700 119000 20 to 4o ft bsg 03 -30-01 61 ,000 5,500 2 NA ND<250 ND<300 11 ,000 39500 27000 75100 06-27-01 559000 , 3,800 2 39300 NA ND<50 85200 2,900 1,600 69300 09-26-01 45,000 4 2,800 2 5,300 NA ND<100 6,700 2,300 1,700 5,600 12-20-01 450004 2 700 2 6 4O02 ND<250 ND< 100 9 500 I 800 2 000 8 000 NOTES: All samples reported as micrograms per liter (pg/1); ' : diesel range compounds are significant; no recognizable pattern; ° : gasoline range compounds are significant; oil range compounds are significant; ° : unmodified or weakly modified gasoline is significant ; NA: Not Analyzed; TPH: total petroleum hydrocarbons; MTBE: methyl tart butyl ether Advanced GeoEnvlronmental, Inc.