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( a TABLE 1 GROUND WATER MONITORING AND CHEMICAL RESULTS: } FORMER REGAL STATION 603, 6425 PACIFIC AVENEUE, STOCKTON, CALIFORNIA WELL # :1 CASING :1 DATE DEPTH TO :1 PROD. :VACUUM :1CORRECTED:ITOTAL PET. :BENZENE TOLUENE ETHYL XYLENES FECAL :IELEVATION :1 TOP OF :1 THICK. :IAT WELL GW ELEV.:1 HYDROCARB : BENZENE :1COLOFORM :1FEET AMSL WATER :1HEAD :1FT. AML GAS-RANGE :1 ;1 IN FEET :11N FEET ;I IN FEET :1 :1 PPM PPB PPB PPB PPB :1MPN/100m1 12.38 :102/08/93 54.58 :1 0 0.00 -42.20 1 -42.04 0.53 12.38 :103/11/93 :� 54.42 :1 0 :� 0.00 • 12.38 :104/15/93 :1 $3.6 '� :� :� <0.3 0.7 1.4 1.2 :� :1 0 :� TRACE -41.22 :f 12.38 :10.5/18/93 51.61 0 0.00 -39.23 12.38 :106/14/93 :1 52.8 :1 0 0.00 -90.42 0.62 :1 180 1.2 33 <0.9 :1 I 12.38 .107/19/93 : 51.66 0 0.00 -39.28 12.38 :108/20/93 :1 53.12 0 Tr :1 -44.74 12.38 :108/23/93 53.12 0 :] Tr -40.74 12.38 :109/15/93 53.33 0 0.00 -40.95 12.38 :109/29/93 :! 53.32 :1 0 0.00 -40.94 12.38 :109/29/93 53.32 0 :f Tr -40.94 0.54 IBO .5.4 61 12 :1 12.38 :111/05/93 : 52.9 0 0.00 -40.52 TANK :105/04/89 :1 <0.1 :1 <0.5 <0.5 <0.5 <0.5 :) CONVAULT :105/25/90 :1 :1 <O.S :1 <0.3 - <0.3 <0.3 <0.9 :1 :1 :IOB/14/92 :� :(. :1 :1 2.75 :11/4" floating product on stored water :1 :112/01/92 :1 :1 :1 :1 800 91. :1 14 :1 <50 300 <50 1600 :1 600 gl. :1 <0.5 :1 <0.3 <0.3 <0.3 <0.9 :1 'y d :102/24/93 :1 :1 :1 :11287 gl. :1 14 :1 .0.3 <0.3 <0.3 <0.9 :1 :1 :104/01/93 :1 :1 :1 :1985 gl. :1 16 :1 3.1 12 3.7 380 :1 :1 :106/14/93 :1 :1 :1 :1800 91. .1 11.2 :1 <0.3 0.3 0.5 <0.9 :1 :108/23/93 :1 :1 :1 :1700 gl :1 0.62 :1 1.7 3.4 5.4 5.4 :1 NOTE; ORGANIC LEAD AND EDB HAVE NOT BEEN DETECTED IN ANY SAMPLES. AMSL - ABOVE MEAN SEA LEVEL GAS-RANGE= GASOLINE RANGE HYDROCARBONS j GW ELL'V. = GROUND WATER ELEVATION PPB - PARTS PER BILLION (UG/L) NS NOT SAMPLED f TOTAL PET- TOTAL PETROLEUM PPM • r PARTS PER MILLION (MG/L) GASOLINE RANGE/KEROSINE RANGE HYDROCAR.H= HYDROCARBON NM = NOT MEASURED MPN/100ml most probable number of positive tubes/100 ml t ' f 16