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TABLE 2
<br /> Historical Groundwater Monitoring Data
<br /> 7-Eleven Store#17334
<br /> 4501 North Pershing Avenue
<br /> Stockton,California
<br /> Well IDI _ - - - - � Ethyl_= - - - �_ - - -- MTBE --- - - -- _- Dlssotved--- - - -_--
<br /> Elevation Date Benzene Toluene Benzene Xylene TPH-G TPH-D 8020 8260 TBA DIPE ETBE TAME Oxygen DTW SPT WTE
<br /> =(TOC} �_ _ -(Ng1L}_ _ipgIL) (N91L) _ {N91- _OJO -_ (N9►�l {N9l�)__I {N9l�) __(N91�)_ -(1J91L) {N91�1_ {NgIL} . {mglL) __{feet) (feet) _(#eet)_
<br /> MW-5A
<br /> 722 12/29/98 10,400 33,400 4,580 26,900 88,600 -- 17,200 <2000 <500 <500 <500 08 1552 000 -830
<br /> 02/17/99 4,400 19,000 2,300 17,000 90,000 - 3,900 4,800 <1000 <250 <250 <250 05 1469 000 -747
<br /> 05/21/99 7,010 21,100 2,890 16,000 103,000 - -- 10,400 <1000 <250 <250 <250 05 1456 000 -734
<br /> 08/28/99 6,420 21,700 2,290 14,000 87,600 - 11,800 11,700 0,000 <250 <250 <250 09 1615 000 -893
<br /> 11/24/99 7,230 20,900 2,780 15,800 1,120,000 7,000 7,580 <800 <200 <200 <200 1 59 1610 000 -888
<br /> 02/02/00 3,980 11,600 2,230 10,600 53,100 1,700 1,460 <500 <125 <125 <125 17 1568 000 -846
<br /> 746 12/29/98 3,410 19,800 2,610 16,700 63,400 - - 1,480 <100 <25 <25 <25 12 1576 000 -830
<br /> 02/17/99 11 240 120 780 5,300 <5 <5 <20 <5 <5 <5 03 1490 000 -744
<br /> 05/21/99 100 214 38 2,610 8,780 - -- 30 <100 <25 <25 <25 02 14 79 000 -733
<br /> 08/28/99 259 151 262 286 2,340 - 102 553 <20 <5 <5 <5 10 1635 000 -889
<br /> 11/24/99 925 224 397 274 1,260 877 882 221 <5 <5 <5 136 1630 000 -884
<br /> 102/02/00 483 763 274, 105 _ 274 <5 <5 <20 _ <5 <5 <5 1 7 1588 000 -842
<br /> Explanation
<br /> -=Not avadablelnot sampled TOC=Top of casing elevation(in feet above mean sea level)
<br /> TPH G=Total petroleum hydrocarbons as gasoline DTW=Depth to water
<br /> MTBE=Methyl tert butyl-ether SPT=Separate phase hydrocarbon thickness
<br /> TBA=Tertiary Butanol WTE=Water table elevation
<br /> DIPE=Di isopropyl ether pg1L=Micrograms per liter
<br /> ETBE=Ethyl ternary butyl ether mglL=Milligrams per liter
<br /> TAME=Tertiary amyl methyl ether ND=Not Detected
<br /> 17334TB2 WK4 Page 3 of 3
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