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<br />      										Groundwater Monitoring Data
<br />  												1995 to Present									Page 2 of 6
<br />       					Former ARCO Service Station No. 2168, 441 Charter Way, Stockton, California    		-
<br /> 	Well 			Elevation     Static      Elevation      Top
<br /> 	Sample			of Top      Water  	of   	of 								Total
<br /> 	Number  	Date     of Casing    Level    Groundwater  Screen   TPHG     Benzene   Toluene  Etta ]benzene   Xylenes     MTBE r1l 	Observations
<br /> 	MW-2 	11/25/96      1083       2895	-1812  		26,000      4,000      2,000  	390   	1,800 	<300*     No FP,No S, Yes 0
<br /> 	MW-2 	02/24/97      1083       2495	-1412  		22,000      3,100      1,300  	340   	1,400	<500**    No FP, No S,Yes 0
<br /> 	MW-2 	05/19/97      1083       2484	-1401  		28,000      4,700      1,900  	480   	2,200 	<300*     No FP, No S,Yes 0
<br /> 	MW-2(52)    08/21/97      1083       2592	-1509  		15,000      3,000      1,200  	320   	1,200	<500**    No FP, No S, Yes O
<br /> 	MW-2(53)    11/17/97      1083       2694	-1611   		2,200       510 	120    	44     	130 	<100**    No FP, No S,No 0
<br /> 	MW-2(53)    02/09/98      1083       2433	-1350  		15,000      3,700       790   	440   	1,000	<500**    No FP, No S,Yes 0
<br /> 	MW-2(52)    05/21/98      1083       2038 	-955   		10,200      2,220       562   	238    	628  	<250      No FP, No S,Yes 0
<br />	MW-2(52)    08/12/98      1083       2057 	-974    		11100       234	390  	238   	494   	<50      No FP, No S, Yes 0
<br />	MW-2(52)    11/09/98      1083       2167	-1084   		4,420       1,050       212   	116    	278   	415       No FP, No S, Yes 0
<br />	MW-3
<br />	MW-3(53)    02/16/95       958       3624	-2666	360     37,000     14,000       340  	2,100   	470   	NA      No FP, No S, O=NE
<br />	MW-3(53)    05/17/95       958       3149	-2191  		39,000     13,000      1,200 	2,100  	1,500  	NA      No FP, No S, O=NE
<br />	MW-3(53)    08/15/95       958       3106	-2148  		31,000     11,000       220  	1,800   	910    	NA      No FP, No S, Yes 0
<br />	MW-3(53)    11/29/95       958       3125	-2167  		41,000     10,000       350  	1,900   	860   	NA      No FP,No S,Yes 0
<br />	MW-3 	02/27/96       958       2851	-1893  		36,000     10,000       510  	1,800   	990   	NA      No FP, No S, Yes 0
<br />	MW-3(53)    05/15/96       958       2682	-1724  		40,000     12,000       690  	2,000  	1,300	<500**    No FP, No S,Yes 0
<br />	MW-3 	08/22/96       958       2735	-1777  		53,000     14,000      2,000 	2,400 	2,900 	<500*     No FP,No S,Yes 0
<br />	MW-3 	11/25/96       958       2766	-1808  		45,000     11,000      1,100 	2,100  	1,800 	<500*     No FP,No S, Yes 0
<br />	MW-3 	02/24/97       958       2355	-1397  		38,000      9,200       460  	1,800  	1,200 	<500*     No FP, No S, Yes 0
<br />	MW-3 	05/19/97       958       2342	-13 84  		38,000      9,800       620  	1,900  	1,100 	<600*     No FP, No S, Yes 0
<br />	MW-3(53)    08/21/97       958       2449	-1491  		36,000      9,500       910  	2,000  	1,500       <2,000**   No FP, No S, Yes 0
<br />	MW-3(54)    11/17/97       958       2557	-1599  		37,000     12,000      2,100 	2,100 	3,000       <1,000**   No FP, No S, Yes 0
<br />	MW-3(54)    02/09/98       958       2307	-1349  		32,000      9,700       510  	2,000 	2,700       <1,000**   No FP, No S, Yes 0
<br />	MW-3(54)    05/22/98       958	1913 	-955   		20,900      7,440	144  	1,760  	479 	<1,000     No FP, No S,Yes 0
<br />	MW-3(53)    08/12/98       958	1927 	-969   		13,600      4,860	159  	1,200  	408 	<1,250     No FP,No S,Yes 0
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<br />    	CP1E\ARC0\2168\QTRLY\2168Q498 XLS     																	f"	e
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