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<br />											Groundwater Monitoring Data
<br />    												1995 to Present
<br />							ARCO Service Station No. 548, 1612 Hammer Lane, Stockton, California				Page 2 of
<br />  		Well    			Elevation  Static   Top     Elevation   Groundwater
<br />       	Sample      			of Top   Water    of  	of    	Flow  					Ethyl-    Total
<br />      	Number    	Date  	ofCasing  Level  Screen Groundwater   Direction    TPHG   Benzene  Toluene benzene Xylenes  MTBE[1]     Observations
<br />		MW-2 (61)   11/18/97     	982     3288		-2306    	E   	<50       26	14       065       15 	<5	No FP,No S,No 0
<br />		MW-2 (60)   02/16/98     	982     2948		-1966   	SE  	<50       <0 5       <0 5      <0 5      <0 5	<5	No FP,No S,No 0
<br />		MW-2 (60)   06/23/98   [P]      982     2698		-1716   	SE  	<50       <0 5       <0 5      <0 5      <0 5	<5	No FP,No S,No O
<br />		MW-2 (60)   09/29/98   [P]      982     2878		-1896    	E   	<50       <0 5       <0 5      <0 5      <0 5	<5	No FP,No S,No O
<br />		MW-2 (60)   12/30/98   [P]      982     2653		-1671   	SE  	<50       <0 5       <0 5      <0 5      <0 5	<5	No FP,No S,No 0
<br />		MW-2 (60)   03/31/99   [P]      982     2511		-1529  	E-SE 	<50       <0 5       <0 5      <0 5      <0 5	<5	No FP,No S,No O
<br />		MW-2 (60)   06/28/99   [P]      982     2625		-1643   	SE  	<50       <0 5       <0 5      <0 5      <0 5	<5	No FP,No S,No 0
<br />		MW-3 (62)   02/15/95     	995     4069   4300      -3074    	E  	**84      <0 5       <0 5      <0 5      <0 5	NA      No FP,No S,O=NE
<br />		MW-3 (62)   05/12/95     	995     3880		-2885    	E 	**100     <0 5       <0 5      <0 5      <0 5	NA       No FP,No S,No 0
<br />		MW-3 (62)   08/29/95     	995     4027		-3032    	E 	*<170     <0 5       <0 5      <0 5      <0 5	NA       No FP,No S,No 0
<br />		MW-3 (62)   12/04/95     	995     3906		-2911    	E 	*<150     <0 5       <0 5      <0 5      <0 5	NA       No FP,No S,No 0
<br />		MW-3 	02/02/96     	995     3710		-2715    	E 	*<100     <0 5       <0 5      <05      <0 5       NA       No FP,No S,No O
<br />		MW-3 (62)   05/10/96     	995     3453		-2458    	E 	**<100     <0 5       <0 5      <0 5      <0 5	<3	No FP,No S,No 0
<br />		MW-3 (62)   08/29/96     	995     3621		-2626    	E 	**<90     <0 5       <0 5      <0 5      <0 5	*<4       No FP,No S,No 0
<br />		MW-3 (62)   11/20/96     	995     3531		-2536    	E 	**<90     <0 5       <0 5      <0 5      <0 5	<3	No FP,No S,No O
<br />		MW-3 (62)   03/19/97     	995     3154		-2159  	E-SE       **<80     <0 5       <0 5      <0 5      <0 5	<3	No FP,No S,No 0
<br />		MW-3 	05/27/97     	995     3116		-2121  	E-SE       **<70     <0 5       <0 5      <0 5      <0 5	<3	No FP,No S,No 0
<br />		MW-3 (62)   08/12/97     	995     3314		-2319    	E   	<50       <0 5       <0 5      <05      <05	<5	No FP,No S,No 0
<br />		MW-3 (62)   11/18/97     	995     3295		-2300    	E   	<50	15       087      <0 5      068	<5	No FP,No S,No 0
<br />		MW-3 (63)   02/16/98     	995     2905		-1910   	SE  	140       050       071      <0 5      <0 5	<5	No FP,No S,No 0
<br />		MW-3 (62)   06/23/98   [P]      995     2694		-1699   	SE  	<50       <0 5      <0 5      <0 5      <0 5	<5	No FP,No S,No 0
<br />		MW-3 (62)   09/29/98   [P]      995     2872		-1877    	E   	<50       <0 5      <0 5      <0 5      <0 5	<5	No FP,No S,No 0
<br />		MW-3 (62)   12/30/98   [P]      995     2656		-1661   	SE  	<50       <0 5       <0 5      <0 5      <0 5	<5	No FP,No S,No 0
<br />		MW-3 (62)   03/31/99   [P]      995     2509		-1514  	E-SE 	<50       <0 5      <0 5      <0 5      <0 5	17	No FP,No S,No 0
<br />		MW-3 (62)   06/28/99   [P]      995     2625		-1630   	SE  	<50       <0 5       <0 5      <0 5      <0 5       236       No FP,No S,No 0
<br />		MW-4 (63)   02/15/95    	1157    4212   4400      -3055    	E  	<50       <0 5       <0 5      <05      <0 5       NA      No FP,No S,O=NE
<br />		MW4 (63)   05/12/95    	1157    4029		-2871    	E  	<50       <0 5       <0 5      <0 5      <0 5	NA       No FP,No S,No 0
<br />		MW-4  63    08/29/95    	1157    4172		-3015    	E   	<50       <05       <0 5      -�0 5      <05	NA       No FP,No S,No O
<br />		CPIE IARC0105481QTRLY\0548Q299 XLS      																	�       Q
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