|
Table 2.Historical Groundwater Monitoring and Analytical Data
<br /> ARCO Station No.4932,16 East Harding Way,Stockton,CA
<br /> TOC Product Water Level Concentrations in Pg/L
<br /> Well ID and Elevation DTW Thickness Elevation GRO/ Ethyl- Total
<br /> Date Monitored (feet) (feet) (feet) (feet) TPHg Benzene Toluene Benzene Xylenes MTBE Ethanol DIPE ETRE TAME TBA 1,2-DCAEDB Footnote
<br /> EW-7 Cont.
<br /> 2/25/2013 10.12 24.00 0.00 -13.88 - - - - _
<br /> 3/1/2013 -- -- -- <50 <0.50 <0.50 <0.50 <1.0 4.4 1 <050 <0.50 <0.50 <10 0.84 <0.50
<br /> MW-1
<br /> 9/5/2000 12.41 27.13 0.00 -14.72 1,500 130 73 5.1 250 270 -- <2.0 <2.0 3.7 <200 24 <2.0 a
<br /> 11/2/2000 27.76 0.00 -15.35 1,000 140 68 19 100 280 - <2.0 <2.0 15 <50 35 <2.0
<br /> 3/5/2001 27.13 0.00 -14.72 830 130 55 21 130 380 - <2.00 <2.00 9.6 <200 68 <2.00
<br /> 5/8/2001 26.75 0.00 -14.34 600 78 25 17 85 1,000 -- <10.0 <10.0 10 <1,000 79 <10.0
<br /> 7/20/2001 28.11 0.00 -15.70 <500 <5.0 <5.0 <5.0 <5.0 990 - <2.0 <2.0 5.8 <200 32 <2.0
<br /> 10/22/2001 29.96 0.00 -17.55 650 50 21 16 120 1,600 - <20 <20 <20 <2,000 <20 <20
<br /> 1/15/2002 29.43 0.00 -17.02 2,700 170 32 110 600 1,100 -- <10 <10 <10 <100 72 <10
<br /> 4/11/2002 28.65 0.00 -16.24 1,300 130 5.4 68 200 510 -- <10 <10 <10 <100 86 <10
<br /> 7/12/2002 29.61 0.00 -17.20 9,300 290 30 290 1,200 4,700 - <10 <10 13 210 -- -
<br /> 22/20/2002 32.10 0.00 -19.69 1,600 N 31 <5.0 9.1 12 1,600 - <10 <10 <10 <400 140 <10
<br /> 1/30/2003 - _ _
<br /> __ _ __ __ _ _ _ -- _ -- _ _ _ INA
<br /> 4/28/2003 -- _ _
<br /> _ _ _ _ _ _ _ -- _ -- _ _ _ INA
<br /> 7/29/2003 31.74 0.00 -19.33 16,000 430 1,200 540 1,800 2,200 <10,000 <50 <50 <50 <2,000 130 <50
<br /> 10/17/2003 32.98 0.00 -20.57 1,100 <5.0 6.0 <5.0 <.5.0 2,900 <10,000 <100 <100 <100 <2,000 74 <50
<br /> 1/12/2004 33.02 0.00 -20.61 220 <5.0 <5.0 <5.0 <5.0 430 <1,000 <10 <10 <10 <200 100 <5.0
<br /> 4/26/2004 31.26 0.00 -18.85 570 <5.0 6.0 <.5.0 <5.0 850 <1,000 <5.0 <5.0 <5.0 210 77 <5.0
<br /> 7/14/2004 32.64 0.00 -20.23 <5,000 <50 <50 <50 <50 4,200 <10,000 <50 <50 <50 <2,000 100 60 40
<br /> 10/27/2004 34.60 0.00 -22.19 <2,500 <25 <25 <25 <25 1,700 <5,000 <25 <25 <25 <1,000 62 <25
<br /> 1/13/2005 35.03 0.00 -22.62 950 <50 <50 <50 <50 1,700 <10,000 <100 <100 <100 <2,000 <50 <50
<br /> 4/15/2005 30.84 0.00 -18.43 2,600 N <25 <25 <25 <25 1,800 <5,000 <25 <25 <25 <3,000 38 <25
<br /> 7/11/2005 31.00 0.00 -18.59 <2,500 <25 <25 <25 43 1,700 <5,000 <25 <25 <25 <1,000 <25 <25
<br /> 10/5/2005 31.92 0.00 -19.51 460 N <25 Q.5 <2.5 <2.5 390 <500 <2.5 <2.5 <2.5 750 17 <25
<br /> 1/13/2006 31.34 0.00 -18.93 1,200 <5.0 6.0 <5.0 <5.0 360 <3,000 <5.0 <.5.0 <5.0 1,300 32 <5.0
<br /> 4/12/2006 29.22 0.00 -16.81 <500 <5.0 <5.0 <5.0 <5.0 62 <3,000 <5.0 <5.0 <5.0 700 17 <5.0
<br /> 7/12/2006 27.20 0.00 -14.79 98 <0.50 <0.50 <0.50 <0.50 69 <300 1.8 <0.50 <0.50 770 23 <0.50
<br /> 10/19/2006 28.64 0.00 -16.23 78 <0.50 <050 <0.50 <030 68 <300 0.87 <0.50 <0.50 380 8.5 <0.50
<br /> 3/14/2007 28.05 0.00 -15.64 220 <0.50 <0.50 <0.50 <0.50 200 <300 1.2 <0.50 <0.50 550 10 <0.50
<br /> Page 18 of 38
<br />
|