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TABLE 1 GROUND WATER MONITORING AND CHEMICAL RESULTS FORMER REGAL STATIO,4 603 6425 PACIFIC AVENEUE, STOCKTON CALIFORNIA WELL # I CASING I DATE [DEPTH TO I PROD [VACUUM ICORRECTED ITOTAL PET [BENZENE TOLUENE ETHYL XYLENES [METHYL t- 1ELEVATION I I TOP OF [ THICK 1AT WELL I GW ELEV I HYDROCARS [ BENZENE [BUTYL ETHER IFEET AMSL I I WATER [ MEAD IFT AMSL I GAS-RANGE I I I 1 [ IN FEET IIN FEET IIN FEET [ PPM [ PPB PPB PPB PPB 1 PPB 1 12 38 04/15/93 1 53 6 [ 0 1 0 00 1 -41 22 [ 1 12 36 105/18/93 I S1 61 I 0 0 00 [ -39 23 [ I 1 12 38 106/14/93 [ 52 8 [ 0 0 00 [ -40 42 1 0 62 [ 180 1 2 33 <0 9 [ 1 12 39 107/19/93 [ 51 66 0 0 00 [ -39 28 [ [ 1 12 38 I0B/20/93 I 53 12 0 Tr I -40 74 I 1 12 38 100/23/93 1 53 12 0 Tr [ -40 74 I 1 I 12 38 09/15/93 53 33 0 0 00 [ -40 95 I [ 12 38 109/29/93 [ 53 32 0 0 00 [ -40 94 [ I I 12 3B 09/29/93 1 53 32 0 Tr 1 -40 94 [ 0 54 [ 100 5 4 61 12 [ 1 12 38 111/05/93 [ 52 9 0 0 00 ( -40 52 [ I I 1 12 36 112/22/93 52 26 0 0 00 [ -39 68 1 4 8 [ 1700 20 350 20 [ 12 38 102/10/94 52 25 0 Tr [ -39 87 1 I [ 12 38 103/04/94 50 92 0 Tr [ -38 54 I I 12 38 103/29/94 50 15 0 0 00 1 -37 77 I 1 5 1 620 2 150 5 1 12 38 104/26/94 49 79 [ 0 0 00 i -37 41 1 1 12 38 05/19/94 50 [ 0 0 00 -37 62 I 1 12 38 106/22/94 1 49 14 = 0 0 00 -36 76 I 1 4 510 <3 47 <10 [ 12 38 108/17/94 I 51 35 1 0 0 00 -38 97 1 i 12 38 109/14/94 ( 50 21 1 0 0 00 1 -37 83 I 0 4 14 <0 5 <0 5 <2 [ I 12 38 10/26/94 [ 50 4 1 0 0 00 -38 02 [ [ 12 38 12/16/94 [ 50 03 [ 0 I 0 00 -37 65 1 0 5 130 8 3 4 [ [ 12 38 01/25/95 I 49 42 [ 0 ( 0 00 -37 04 1 1 12 38 03/15/95 1 48 46 # 0 [ 0 00 -36 08 1 0 09 0 7 <0 5 <0 5 <2 [ 1 12 38 104/12/95 1 48 56 1 0 1 0 00 -36 16 1 I [ 12 38 05/17/95 47 29 0 0 00 -34 91 { [ 12 38 106/21/95 46 98 0 0 00 -34 60 2 1 150 62 120 300 1 12 38 108/01/95 47 17 0 0 00 -34 79 3 12 39 09/26/95 47 32 0 0 00 -34 94 2 1 98 6 B 120 180 12 38 110/17/95 46 62 [ 0 0 00 -34 24 I [ 12 38 111/14/95 46 8 [ 0 0 00 -34 42 I 1 [ 12 38 12/12/95 [ 47 33 1 0 0 00 -34 95 1 6 3 210 200 410 1400 [ 12 36 01/22/96 [ 45 35 1 0 0 00 -32 97 [ I I 12 38 103/06/96 1 44 9 1 0 0 00 1 -32 52 [ 9 5 250 460 560 2100 [ I 12 38 104/09/96 42 72 0 0 00 ' -30 34 1 1 12 38 105/28/96 41 75 0 0 00 f -29 37 1 1 1 12 38 106/20/96 41 6 0 E O 00 -29 22 4 2 [ 93 9 8 310 610 80 1 12 38 107/30/96 42 25 1 0 0 00 1 -29 87 [ [ 1 12 3e 109/19/96 I 43 � n � u vu i -,u b2 i �. , � a - 770 a20 130 1 12 38 12/10/96 1 41 34 1 0 0 00 1 -28 96 I 8 2 1 180 49 920 2500 [ 50 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 PPS - PARTS PER BILLION (UG/L) NS NOT SAMPLED TOTAL PET. TOTAL PETROLEUM PPM a PARTS PER MILLION (MG/L) • GASOLINE RANGE/KEROSINE RANGE HYDROCARB. HYDROCARBON NM - NOT MEASURED MPN/100ml most probable number of positive tubes/100 ml 23