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TABLE 4 TANK EXCAVATION, PRODUCT TRENCHES, AND SOIL BORING SOIL SAMPLES <br /> FORMER REGAL STATION 603, 1448 N. EL DORADO STREET, STOCKTON, CALIFORNIA. <br /> EPA METHODS: 8015 MODIFIED AND 8020 WITH 5030 EXTRACTION OOHS DOHS <br /> LOCATION SAMPLE DATE DEPTH TOTAL PETROLEUM HYDROCARBONS BTEX AB 1803 <br /> ID# SAMPLED SAMPLED GASOLINE KEROSINE DIESEL OILS BENZENE TOLUENE ETHY XYLENES EDB TEL <br /> IN FEET RANGE RANGE RANGE RANGE BENZENE <br /> BELOW <br /> SURFACE IN AAM IN PPM IN PPM IN PPM IN PPM IN PPM IN PPM IN PPM IN PPM IN PP <br /> TANK TP1-A 09/29/89 15 100 TOTAL 36 30 2.1 77 <3.0 <5.0 <br /> EXCAVATION TPI-B 17 1300 TOTAL 540 510 42 890 <3.0 <5.0 <br /> TP2-A 17 100 TOTAL 30 24 1.8 58 <3.0 <5.0 <br /> TP2-8 18 1500 TOTAL 610 580 44 1000 <3.0 <5.0 <br /> TP3-A 18 55 TOTAL 21 17 1.1 39 <3.0 <5.0 <br /> TP3-3 17 4500 TOTAL 2300 2000 180 3400 <3.0 <5.0 <br /> TP4-A 17 2600 . TOTAL 1150 1000 89 1800 <3.0 <5.0 <br /> TP4-B 16 100 TOTAL 41 37 2.4 78 <3.0 <5.0 <br /> TP5-A 15.5 <10 TOTAL <0.005 <0.01 <0.01 <0.02 <3.0 <5.0 <br /> TP5-B 16 1200 TOTAL 580 550 48 990 <3.0 <5.0 <br /> OVEREXCAVATED TO 25-26 FOOT DEPTH AND RESAMPLED. <br /> LEAD <br /> OVER EX-1 06/26/90 25 <10 <10 <10 <10 <0.005 <0.005 <D.005 <0.015 <10 1 <br /> EXCAVATION EX-2 25 <10 <10 <10 <10 <0.005 0.05 <0.005 0.14 <10 <1.0 <br /> OF TANK EX-3 25 <10 <10 <10 <10 <0.005 <0.005 <0.005 <0.015 <10 1 <br /> AREA EX-4 25 <10 <10 <10 <10 <0.005 <0.005 <0.005 <0.015 <10 I <br /> EX-5 26 <10 <10 <10 <10 <0.005 0.01 0.085 0.085 <10 I <br /> EX-A 26 <10 <10 <10 <10 <0.005 <0.005. <0.005 0.05 NR NR <br /> EX-8 26 <10 <10 <10 <10 <0.005 <0.005 <0.005 0.22 NR NR <br /> BACKFILLED EXCAVATION WITH 1/4" PEA GRAVEL TO THE 12 FOOT DEPTH AND INSTALLED VAPOR EXTRACTION WELL. <br /> VAPOR EXTRAC EX-30 10/09/90 30 2 <1 <1 <1 <0.005 <0.005 <0.005 <0.015 NR NR <br /> WELL WITHIN EX-37 37 2 <1 <1 <1 <0.005 <0.005 <0.005 <0.015 NR NR <br /> 5' OF EX-5 <br /> PRODUCT <br /> LINE PL-1 10/05/89 4 2500 AS GASOLINE 900 754 1300 NR NR <br /> 21 <br /> TRENCHES PL-2 3.5 1000 AS GASOLINE 350 260 21 750 NR HR <br /> PL-3 3.5 <10 AS GASOLINE <0.005 <0.01 <0.01 <0.02 NR NR <br /> PL-4 4 1700 AS GASOLINE 650 530 44 1100 NR NR <br /> PL-5 5 <10 AS GASOLINE <0.005 <0.01 <0.01 <0.02 NR NR ' <br /> OVEREXCAVATE PLI(EXC1A) 08/22/90 13 <10 <10 <10 <10 <0.005 <0.005 <0.005 <0.015 NR NR <br /> PUMP ISLANDS PL1(EXC1B) 13 1560 <10 <10 <10 1 31 .13 110 NR NR <br /> PL2(EXC2A) 13 <10 10 <10 <10 <0.005 <0.005 <0.005 -0.015 NR HR <br /> PL2(EXC26) 13 <10 <10 <10 <10 <0.005 0.01 0.04 <0.015 NR NR <br /> PL1(EX1-PB)09/06/90 20 660 <10 <10 <10 <0.005 0.78 0.57 5.9 NR NR <br /> PL4(EX3-PA) 20 8000 <10 75 <10 15 120 60 260 NR NR <br /> BACKFILLED EXCAVATIONS WITH 1/4" PEA AND INSTALLED VAPOR RECOVERY WELLS P1 AND P3. <br /> VAPOR P1-30 10/08/90 30 2 <1 <1 <1 0.62 0.26 <0.005 0.02 NR NR <br /> EXTRACTION P1-40 40 2 <1 <1 <1 0.57 0.13 <0.005 <0.015 NR MR <br /> r DESTROY VAPOR EXTRACTION WELL P1 ON 7/21/92 BY OVERDRILLING, PRESSURE GROUTED WITH 350 GALLONS NEAT CEMENT. <br /> .L 8 <br />