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I <br /> Table 4 <br /> Groundwater Monitoring Results-BTEXITPH as Gasoline Analyses <br /> Dei Monte Disco Property <br /> Stockton,California <br /> Concentration(UFA) <br /> Sample TPH Ethyl <br /> Well Date Gasoline Benzene Toluene benzene Xylenes Dilution Lead <br /> TCLP - 500 - 5,000 <br /> MCL 1 1,000 690 1,750 50 <br /> NP 1-80' 12129194 � r►> 7�-UO ` r v NA <br /> 3112/95 12T OOp � 1 "47$�TQ 'a x''rSlfl,600n i NA <br /> e ay *�' a C , <br /> 7126195 129 OOOz � ;6QQ iXIIZT�IOQa � r�3;0 n; NA <br /> 4117197243�oOY% 5 �30Q 12 24 800 1:1000 NA <br /> 12122/97 H 17O�Da` � $, r5 �g �2,94Oa' 99061 1:500a/1:1000b NA <br /> t t set xr 3a fwd: <br /> 4116198 1--v 172 0D0 '�i ,Y 4 X700 �s 1:1000 <br /> N A <br /> 817198 356,0004 X110 36s 8 78 �t`1�7;�0 1:1000 NA <br /> " 11/11/98 ,9$9 f 2Q, u OObc � ,30(} a=u23 1-40a/1:400b/1:2000c NA <br /> S s; NA <br /> �r r Sb ay g1 ry; r r W» <br /> 1:200a/1:2000b21141160- ' �fix <br /> 61920OW"Ob 10b7119 0NA <br /> NP-1-80 B B 12/22/97 <50 <0.3 <0.3 <0.3 <0.3 NA <br /> NP-1-70' 3112195 '9fi,90Dw ,14601j�` ,9Q0 ` �2?A �' d� 600ue4. NA <br /> 7126195 NA <br /> 8115196 a 12 13A� "l0¢ 3 2 , I 3 +� 1:500 NA <br /> ' '�y )� d. <br /> 4117197 x203 QbO� < 29 a 1:1000 NA <br /> 12/22/97 � r g 23$ 1:1000a/I:100b NA <br /> 4/16/98 ` 1 r S ' OQ 1:1000 NA <br /> { 8/7198 1 h ;344 $, , 4 40 1, 29 0 1:1000 NA <br /> F a $fiw 1:40a/1:2000b NA <br /> 11/11/98 <br /> 2111199 t 20 OOOb [9,OOOb , 1:200a/1:2000b NA <br /> �k 25;1 0000wa S,�OQ <br /> 7116/99 rzs`1?A,000'± 1 �" . az 1:200 NA <br /> j NP-1-70 BB 12122/97 <50 <0.3 2 <0.3 <0.3 <0.3 NA <br /> NP-2-65' $/15/96 s,-r503�10" " 3R• 0 a p 6 4r150frE ua2.r305` ti 1:500 NA <br /> 4117/97 �� 1:100 NA <br /> SVE-NORTH 4/17/97 ti+1 f 4` 1 q 3 J )60 1:100 NA <br /> f 12/22/97 6 ��6$ v I:50a1 l:100b NA <br /> 4116/98fat } t 1:2 NA <br /> 7123198 1 r 1:10 NA <br /> j 11/11/98 0: $0`= Y 1:1 NA <br /> 2/11199 i ` 0-,{` 1:I al 1;100b NA <br /> 7116199 NA <br /> SVE-N BB 12/22/97 <50a <0.3a <0.3b <0.3a <0.3a 1:500a/1:1000b NA <br /> 4116198 <50 <0.3 <0.3 <0.3 <0.3 2:1 NA <br /> 2/11/99 <50 <0.3 <0.3 <0.3 <0.3 1:1 NA <br /> 7/16199 j <50 <0.3 <0.3 <0.3 <0.3 1 1:1 NA <br /> f <br /> SVE-SOUTH 4/17197 ?t-2 $ fr ""00 �` F90df 1:1000 NA? v E I <br /> , 8112198 �1� 0• ,et �, � ' NA <br /> 12/22/97 �rx � NA <br /> 4/16/98 � , 0, 78Q X18 1:500 NA <br /> V <br /> l 7123198 a ,(IOi. `. 1:200 NA <br /> 11/11/98 t I:400a/1:2000b NA <br /> 2111/99 1:2000 NA <br /> 3f , 1:200 NA <br /> 7116/99 �3.0D <br /> SVE-S BB 12/22/97 <50 <0:3 <0.3 <0.3 <0.3 NA <br /> 4116198 <50 <0.3 <0.3 <0.3 <0.3 2:1 NA <br /> 2111199 <50 <0.3 <0.3 <0.3 <0.3 1:1 NA <br /> 7/16199 <50 <0.3 <0.3 <0.3 <0.3 1:1 NA <br /> A11 analyses performed by EPA Method 8015/8020 <br /> TCLP: EPA Toxicity Characteristic Leachate Procedure for Identifying Hazardous Waste <br /> l MCL: California Maximum Contaminant Level for Drinking Water <br /> <0.5: Below Detection limit of 0.5 ug/l <br /> * Sample collected by minimum aeration technique <br /> Shading indicates results above the detection limit. <br /> NA: Not Analyzed <br /> GdotaB-99.xts Page 6 of 6 8/26199 <br />