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Tab!* _
<br /> Historical Groundwater Monitoring Results
<br /> 7-Eleven Store#17334
<br /> 4501 North Pershing Avenue
<br /> Stockton Caldornia I
<br /> i
<br /> Well ID/ Ethyl- MTBE MTBE Dissolved
<br /> Elevation Benzene Toluene Benzene Xylene TPH-G TPH-D 8020 8260 TBA DIPS ETBE TAME Oxygen DTW SPT WT
<br /> (TOC) Date (NgIL) (PgIL) (pg1L) (NgIL) (pg1L) (pg/L) (pgIL) (pg1L) (pgIL) (pg/L) (pg/L) (pg/L) (mg1L) (feet) (feet) (feet) 1
<br /> MW-5A
<br /> 722 12129/98 10,400 33,400 4,580 26,900 88,600 17,200 <2000 <5001 <500 <5001 0 8 15 52 000 -8301
<br /> 02/17/99 4,400 19,000 2,300 17,000 90,000 3,900 4,800 <1000 <2501 <250 <250 0 5 1469 000 -747
<br /> 05/21199 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 <1,000 <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 <B00 <200 <200 <200 10 1610 1000 -888
<br /> 02/02/00 3,980 11,600 2,230 10,600 53,100 1,700 1,460 <500 <125 <125 <125 16 1568 1000 -846
<br /> 05/16/00 7,900 25,000 3,000 16,000 18,000 - 4,600 <2 500 <100 <100 <100 4 2 1370 000 -648
<br /> 08/08100 5,700 15,000 2,400 1'1,000 60,000 2,900 <2,5001 <1001 <100 <100 04 1542 000 -820
<br /> 11/14/00 5,500 16,000 2,500 12,000 48,000 - 2,800 <2,5001 <1001 <100 <100 04 1568 000 -846
<br /> MW-5B
<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 <51 <20 <5 <5 <5 0 3 1490 000 -744
<br /> 05/21/99 100 214 38 2,610 8,780 30 <100 <25 <25 <25 02 1479 0 00 -733
<br /> 08/28/99 269 151 262 286 2,340 -- 102 553 <20 <5 <5 <5 1 0 1635 000 -889
<br /> 11/24/99 92 5 224 397 274 1,260 877 882 221 <5 <5 <5 1 4 1630 000 -8 84
<br /> 02/02/00 483 763 274 105 274 <5 <5 <20 <5 <51 <5 1 7 1588 000 -8 42
<br /> 05/16/00 16 49 10 43 220 4 5 <50 <2 <2 <2 4 7 1394 000 -648
<br /> 08/08/00 53 100 <25 140 630 19 <50 <2 <2 <2 1 6 1570 000 -824
<br /> 11/14/00 38 1 74 16 96 510 -- 16 <50 <2 <2 <2 0 5 1590 000 -844
<br /> Explanation
<br /> -=Not available/not sampled TOC=Tap 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=Nisopropyl ether NgIL=Micrograms per liter
<br /> ETRE=Ethyl-tertiary-butyl ether mg/L=Milligrams per liter
<br /> TAME=Tertiary-amyl-methyl ether ND=Not Detected
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