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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 [DEPTH TO I PROD IVACUUM ICORR$CTED ITOTAL PET fBENx£NE TOLUENE ETHYL XYLENES I IELEVATION I I TOP OF I THICK IAT WELL I GW ELEV I HYDROCARB I BENZENE 1 IFEET AMSL I I WATER I IREAD IFT AMSL I GAS-RANGE I I I I I IN FEET IIN FEET IIN FEET I I PPM I PPB PPB PPB PPB 1 I I I I I I I I 1 I 12 81 109/29/93 1 53 6 1 0 1 0 00 1 -40 79 1 <0 05 1 <0 3 c0 3 <0 3 40 9 1 1 12 81 111/05/93 1 53 19 1 0 f 0 00 1 -40 38 I 1 I 1 12 81 112/12/93 1 52 53 1 0 1 0 00 1 -39 72 I I 1 12 81 102/10/94 1 52 48 1 0 1 0 00 1 -39 67 + <O 05 1 <0 5 <0 5 <0 5 <0 5 1 1 12 81 ID3/04/94 1 50 96 1 0 1 0 00 1 -38 15 18010 - all compounds below detection limits I 1 12 81 103/29/94 1 50 4 1 0 I 0 00 1 -37 59 1 <O 05 1 <0 5 <0 5 <0 5 <2 1 1 12 81 104/26/94 1 49 84 1 0 1 0 00 1 -37 03 1 I I 1 12 81 105/19/94 1 50 1 1 0 1 0 00 1 -37 29 1 I I 1 12 81 106/22/94 1 49 48 1 0 1 0 00 1 -36 67 1 <0 O5 1 <0 5 <0 5 <0 5 <2 [ 1 12 81 108/17/94 1 51 64 1 0 1 0 00 1 -38 83 1 f I 1 12 61 109/14/94 1 50 5 1 0 I 0 00 1 -37 69 I e0 05 1 <0 5 <0 5 <0 5 <2 1 1 12 81 110/26/94 1 50 7 1 0 I 0 00 1 -37 89 I I I MW12 1 12 38 110/01/92 1 56 88 1 0 1 0 00 i -44 50 I 1 I 1 12 38 110/08/92 1 56 92 1 0 1 0 00 1 -44 $4 1 0 11 1 5 3 1 9 <0 3 2 1 1 1 12 38 111/11/92 1 56 56 1 0 1 0 00 I -44 18 f 1 I 1 12 38 [12/09/92 1 56 14 1 0 1 0 00 1 -43 76 1 0 91 1 180 3 8 1 8 16 1 I 12 38 101/15/93 1 $5 52 1 0 I 0 00 I -43 14 I I I 1 12 38 102/08/93 1 54 58 1 0 1 0 00 1 -42 20 1 I I 1 12 39 103/11/93 1 54 42 1 0 I 0 00 1 -42 04 1 0 53 1 <0 3 0 7 1 4 1 2 1 1 12 38 104/15/93 1 53 6 1 0 I D 00 1 -41 22 1 I f 1 12 36 105/18/93 1 51 61 1 0 1 0 00 I -39 23 I [ I 1 12 38 106/14/93 1 52 8 1 0 1 0 OD f -40 42 1 0 62 1 180 1 2 33 <0 9 1 1 12 38 107/19/93 1 51 66 1 0 1 0 00 1 -39 28 1 I I 1 12 38 108/20/93 1 53 12 1 0 I Tr 1 -40 74 1 f I 1 12 38 108/23/93 1 53 12 1 0 1 Tr 1 -40 74 1 12 38 109/15/93 1 53 33 1 0 1 0 00 I -40 95 1 I I 1 12 38 109/29/93 1 53 32 1 0 1 0 00 1 -40 94 f 1 I 1 12 38 109/29/93 1 53 32 1 0 I Tr 1 -40 94 1 0 54 1 180 5 4 61 12 1 1 12 38 111/05/93 I 52 9 1 0 10 00 1 -40 52 I I I 1 12 38 112/22/93 1 52 26 1 0 1 0 OD I -39 88 1 4 8 I 1700 20 350 20 1 I 12 3R Ing/in/aa I c2 2c i n 1 Tr 1seI I I 1 12 36 103/04/94 1 50 92 1 0 1 Tr 1 -38 54 1 I I 1 12 38 103/29/94 1 50 15 1 0 1 0 00 1 -37 77 I 1 5 1 820 2 150 5 1 1 12 38 104/26/94 1 49 79 1 0 1 0 00 1 -37 41 1 I I 1 12 38 f05/19/94 1 50 I 0 1 0 00 1 -37 62 f I I 1 12 36 106/22/94 1 49 14 1 0 1 0 00 1 -36 76 1 1 4 I 510 <3 47 1 4 1 1 12 38 108/17/94 1 51 35 1 0 1 0 00 1 -38 97 1 I I 1 12 38 109/14/94 1 50 21 1 0 1 0 00 1 -37 63 [ 0 4 1 14 <0 5 <0 5 <2 1 1 12 3B 110/26/94 1 50 4 1 0 1 0 00 I -38 02 I I I NOTE ORGANIC LEAD AND EDB HAVE NOT BEEN DETECTED IN ANY SAMPLES AMSL - ABOVE MEAN SEA LEVEL GAS-RANGE- 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 17