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TABLE 1 GROUND WATER MONITORING AND CHEMICAL RESULTS FORMER REGAL STATION 603, 6425 PACIFIC AVENEUE, STOCKTON, CALIFORNIA WELL # I CASING I DATE IDEPTH TO I PROD JvACO@S (CORRECTED ITOTAL PET (BENZENE TOLUENE ETHYL XYLENES 1 FECAL (ELEVATION J I TOP OF I THICK IAT WELL I GW ELEV I HYDROCARB I BENZENE ICOLOFORM (FEET AMSL I I WATER I JHEAD IPT AMSL I GAS-RANGE I J I I I IN FEET JIN FEET JIM FEET I J PPM I PPB PPB PPB PPB JMPN/100ml 1 12 38 02/08/93 1 54 56 1 0 1 a 00 1 -42 20 1 I 1 12 38 103/11/93 1 54 42 1 0 1 0 00 J -42 04 1 0 53 I <0 3 0 7 1 4 1 2 1 1 12 38 104/15/93 1 53 6 1 0 1 TRACE J -41 22 J I J 1 12 38 105/16/93 1 51 61 1 0 1 0 00 1 -39 23 1 I I 12 38 106/14/93 1 52 8 1 0 1 0 00 1 -40 42 1 0 62 J 180 1 2 33 <0 9 I 1 12 38 107/19/93 1 51 66 1 0 1 0 00 1 -39 28 I 1 I 1 12 38 108/20/93 1 53 12 1 0 J Tr I -40 74 J I I 1 12 38 108/23/93 1 53 12 1 0 1 Tr 1 -40 74 1 1 12 38 109/15/93 1 53 33 1 0 1 0 00 J -40 95 1 1 12 38 109/29/93 J 53 32 1 0 1 0 00 1 -40 94 1 I 1 12 38 109/29/93 1 53 32 1 0 I Tr I -40 94 1 0 54 1 180 5 4 61 12 1 12 38 j11/a5/93 1 52 9 J 0 1 0 00 1 -40 52 1 1 I TANK 1 105/04/89 1 1 1 1 <0 1 1 <0 5 <0 5 <0 5 <0 5 1 CONVAULT I 105/25/90 1 1 1 1 J <0 5 I <0 3 <0 3 <0 3 <0 9 J 1 108/14/92 1 I I 1 2 75 11/4" floating product on stored water 1 112/01/92 1 J 1800 gl 1 14 1 <50 300 <50 1600 1 101/21/93 1 1 I 1600 gl I <0 5 I <0 3 <0 3 <0 3 e0 9 I I 102/24/93 1 1 1 11287 gl 1 14 <0 3 <0 3 <0 3 <0 9 J 1 104/01/93 1 1 19B5 gl 1 16 1 3 1 32 3 7 380 1 1 106/14/93 1 1800 gl 1 11 2 1 <0 3 0 3 0 5 <0 9 I 1 108/23/93 1 1 1 1700 gl 1 0 62 1 1 7 3 4 5 4 5 4 NOTE ORGANIC LEAD AND EDB HAVE NOT BEEN DETECTED IN ANY SAMPLES AMSL - ABOVE MEAN SEA LEVEL GAS-RANG£- GASOLINE RANGE HYDROCARBONS GW ELEV - GROUND WATER ELEVATION PPB - PARTS PER BILLION (UG/L) NS NOT SAMPLED TOTAL PET- TOTAL PETROLEUM PPM - PARTS PER MILLION (MG/L) • GASOLINE RANGE/KEROSINE RANGE HYDROCARB- HYDROCARBON NM - NOT MEASURED MPN/100ml most probable number of positive tubes/100 ml 16