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0 s <br /> R603 6425 PACIFIC AVENUE, STOCKTON, CALIFORNIA <br /> GROUNDWATER CONTAMINANT MIGRATION AND DEGRADATION RATES <br /> TPHg Benzene Toluene toluene <br /> MW10 MWS MW12 MW10 MWB 14W12 MW8 MW12 <br /> GRADIENT DISTANCE FROM SOURCE DATE 0 120 240 0 120 240 <br /> BENZENE FROM MW8 - MW12 5/4/89 3000 1300 63 0 <br /> DAYS TRAVELED 1 1437 8/24/89 27000 4300 500 0 <br /> VELOCITY PER DAY 1 0 084 1/15/90 69000 1300 68000 12000 4000 0 <br /> VELOCITY PER YEAR 30 48 5/14/90 77000 300 24000 3200 240 0 <br /> 11/17/9D 290000 600 27000 11000 2200 0 <br /> V29/91 600 7100 2400 0 <br /> TOLUENE FROM MW8 - 14W12 6/27/91 500 1 5700 570 0 <br /> DAYS TRAVELED 2242 9/18/91 200 6500 1100 0 <br /> VELOCITY PER DAY 0 054 12/17/91 120000 24000 17000 7500 4500 0 <br /> VELOCITY PER YEAR 1 19 54 3/10/92 7600 3200 970 0 <br /> 6/18/92 15000 3700 2500 0 <br /> TPH q FROM MW8-MW12 9/22/92 770 280 8 5 <br /> DAYS TRAVELED 1581 10/8/92 1 110 1 5 3 1 9 <br /> VELOCITY PER DAY 0 076 12/9/92 11000 910 3000 180 1600 0 3 8 <br /> VELOCITY PER YEAR 27 70 3/15/93 39000 2300 530 760 420 <0 3 140 0 0 7 <br /> 6/14/93 43000 3900 620 190 700 180 51 0 1 2 <br /> BENZENE 9/29/93 10000 7700 540 24 1100 180 550 0 5 4 <br /> 12/22/93 22000 6300 4800 130 840 1700 86 0 20 <br /> DEGRADATION 8 MW8 TO MW12 1 85 83 6/22/94 76000 9800 1400 11 1400 510 560 0 <3 <br /> DEGRADATION % PER FOOT 0 72a3/15/95 <br /> 17000 5600 400 9 1400 14 140 0 <0 5 <br /> 20000 7300 500 37 2500 130 170 0 8 <br /> 26000 700 90 7 750 0 7 990 0 <0 5 <br /> TOLUENE 15000 2400 2000 13 590 150 63 0 62 <br /> 9100 5400 2100 6 900 98 370 0 6 8 <br /> DEGRADATION i MW8 TO MW12 89 78 12/12/95 8200 4800 6300 <5 690 210 270 0 200 <br /> DEGRADATION t PER FOOT 0 75 3/6/96 5200 2500 9500 <3 250 250 190 0 460 <br /> 6/20/96 230 2700 4200 <0 5 210 93 240 0 9 8 <br /> TPHq 9/19196 1600 2100 4000 4 7 150 76 210 0 8 3 <br /> 12/10/96 1600 1900 8200 2 6 160 180 180 0 49 <br /> DEGRADATION $ MW8 TO MW12 82 22 3/18/97 700 2800 8600 <3 180 110 380 D 70 <br /> DEGRADATION W PER FOOT 0 69 6/11/97 1600 1700 5900 <5 76 65 250 0 15 <br /> 9/23/97 610 1400 6100 <0 5 14 32 55 0 10 <br /> DEGRADATION MW12 TO SBB - 150 FEET 12/16/97 <br /> BENZENE 99 80 3/11/98 360 3600 9000 <0 5 39 30 290 0 40 <br /> TOLUENE 97 50 5/28/98 540 8200 9000 <0 5 32 10 260 0 30 <br /> TPHg 99 95 9/8198 480 3400 2900 <0 5 5 5 58 0 4 <br /> 11/18/98 300 1200 8500 <0 5 1 2 9 140 0 25 <br /> USING THE ABOVE DEGRADATION FOR THE 12/22/93 BENZENE 1/8/99 1700 5400 5300 <0 5 1 7 7 55 0 3 <br /> 3 4 AT 150 FEET OUT 12/12/00 670 7000 81 <0 5 <2 <0 5 43 0 <0.5 <br /> 0 0068 AT 300 FEET OUT IALL CONCENTRATIONS IN UG/L <br /> t <br />