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i <br /> Table 4 <br /> Groundwater Monitoring Results-BTEX/TPH as Gasoline Analyses <br /> Del Monte Disco Property <br /> Stockton,California <br /> Concentration(u ) <br /> Sample TPH Ethyl <br /> Well Date Gasoline Benzene Toluene benzene Xylenes Dilution Lead <br /> TCLP - 500 - - - 5,000 <br /> MCL - 1 1,000 680 1,750 50 <br /> NP-1-80' 12/29/94k <br /> 3/12/95 2�, S0 d1 { NA <br /> 7/26/95 s I `dQ0'E <br /> NA <br /> 4117197 F143` r 1,3,�Ob 1:1000 NA <br /> 12/22/97 <br /> ��� ig � �r 1:500a/1:1000b NA <br /> 41161987, 1:1000 NA <br /> 8R/98 ]:1000 NA <br /> 11/11/98 "W <br /> ���,{ . 10 <br /> ,^ �; 00� „ 1:4Oa/1:400b/1:2000c NA <br /> 2111199 „O a 61 gt1A 1.200a/1:2000b NA <br /> NP-1-80 BB 12/22/97 <50 <0.3 <0.3 <0.3 <0.3 NA <br /> NP-1-70' 3/12/95 ,.'.. d NA <br /> 7/26/95 N A <br /> 8/15/96 1:500 NA <br /> 4117/97 20 1:1000 NA <br /> 12/22/97 ice' 1:1000a/1:100b NA <br /> 4/16/98t/ F 1:1000 NA <br /> 817/98 1.1000 NA <br /> 11/11/98 1:40a/1:2000b NA <br /> �a . <br /> 2111!99 1:200a/1:2000b NA <br /> NP-1-70 BB 12/22/97 <50 <0.3 <0.3 <0.3 <0.3 NA <br /> NP-2-65' 8/15/96 <br /> 1 1:500 NA <br /> 4/17197 r., d 1:100 NA <br /> SVE-NORTH 4117/97 1:100 NA <br /> 12122197 ° 1:50a/1:100b NA <br /> 4/16198 1:2 NA <br /> 7/23/98 1:10 NA <br /> 11/11/98 � Q� 1:1 NA <br /> 2111199 1:1a/1:100b NA <br /> SVE-N BB 12/22/97 <50a <0.3a x <0.3b <0.3a I <0.3a 1:500a/1:1000b 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 1:1 NA <br /> SVE-SOUTH 4117/97 / 1.8 X0800 x ' <br /> �; � �6, � 2�500� .a ui���QO,� 1:1000 NA <br /> 8112198 1� , � 2000 '= s <br /> NA <br /> 12/22/978,')015 NA <br /> 4116198Y 3s q s. <br /> ' ,. � �0�0,�� q�+2x�8 � , .h � 1:500 NA <br /> 7/23198 s+x �180(Id3 3d4� ; 1:200 NA <br /> 11/11/98 7$� =29" rtesnG u <br /> �� r 1Eyt^ 04�, � S 2,, 21�, 1:400a/1:2000b NA <br /> 2/11/99 40, .... 518.00Q,F� ;# 5001�1�Q � 1:2000 NA <br /> SVE-S BB 12/22/97 <50 <0.3 <0.3 <0.3 <0.3 NA <br /> 4/16198 <50 <0.3 <0.3 <0.3 <0.3 2:1 NA <br /> 2/11/99 <50 <01.3 <0.3 <0.3 <0.3 I:1 NA <br /> All analyses performed by EPA Method 8015/8020 <br /> TCLP: EPA Toxicity Characteristic Leachate Procedure for Identifying Hazardous Waste <br /> MCL: California Maximum Contaminant Level for Drinking Water <br /> <0.5: Below Detection limit of 0.5 ug/1 <br /> * _ Sample collected by minimum aeration technique <br /> Shading indicates results above the detection limit. <br /> NA: Not Analyzed <br /> 13data2-99,x15 Page 6 of 6 8/10/99 <br /> I <br />