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								         													TAWP 1 												S       I
<br />       		.    						Groundwater Monitorita and Analytical Results  						0
<br />  												Tosco(Circle K)Unit#101205
<br />     												16470 Cambridge Street
<br />													Lathrop,California
<br />  		L  IU/      DATE   	l) 		$1.     	GVE    	TPH•G      	A 		T 		E		X      	MTBE
<br />     	TDG'�      			UZtj   	U  bb's     	(h)       	(ppb       	(pph)     	(ppb)     	(pph)    	(PP h)     	(p11b)
<br />     	MW-1
<br />      	1762    	10/08/98  	1127  	6 0-26 0   	635      	29,000      	180      	2,500     	3,200    	13,000    	3,4003
<br />       			01/25/99  	1173       			589      	40,000      	320      	1,800     	2,500    	12,000   	22,000
<br />       			04/29/99  	1021       			741       	380		69		27		94       	100       	51
<br />       			07/16/99  	1108       			654      	67,000      	380      	1,500     	2,900    	17,000  	1,400/8203
<br />       			10/21/99  	1143       			619     	31,0007      	110      	1,100     	1,900    	11,000  	320/2503
<br />       			01/31/00  	1050       			712     	48,0007      	100      	2,900     	2,500    	16,000	2,30012,2003
<br />       			04/10/00   	870       			892     	45,6007     	ND       	1,570     	2,660    	15,000  	2ND11863
<br />       			07/05/00   	965       			797     	29,4008     	704       	224      	1,910    	8,910  	2ND/ND 7-3
<br />       			10/20/110  	1153
<br />											6 09     	41,8008      	105      	1,210     	2,980    	14,300   	ND/3 03
<br />       			01/08/01  	1200       			562     	18,0007     	NDZ       	530       	990     	6,000   	2ND1293
<br />     	MW-2
<br />      	1750    	10/08/98  	11 17  	6 0-26 0   	633      	18,000      	210       	100      	1,600    	1,700    	4,0003
<br />       			01/25/99  	1164       			586     	28,000      	270       	410      	2,400    	6,300    	79,000
<br />       			04/29/99  	1012       			738       	290°       	090       	26		11		29		22
<br />       			07/16/99  	1098       			652      	22,000      	160       	130      	1,200    	3,300  	1,40015603
<br />				10/21/99  	1135       			615     	25,0007      	110       	180       	940     	2,400   	2ND/713
<br />       			01/31/00  	1043       			707     	47,0007      	280       	360      	2,800    	9,800 	12,00019,8003
<br />       			04/10/00   	859       			891     	31,3007      	335      	1,220     	2,390    	8,660   	2ND/5323
<br />       			07/05/00   	955       			795      	5,6008      	222      	922      	537      	446    	178/2373
<br />				10/20/00  	1144       			606     	13,300$     	367      	ND       	875      	282    	2ND/4 43
<br />       			01/08/01  	11.92      			558     	10,0007      	73       	ND'      	840      	520    	ZND1283
<br />     	MW-3
<br />      	18 16    	10/08/98  	1167  	8 0-28 0   	649      	11,000       	14		34       	580      	560      	ND'
<br />       			01/25/99  	1217       			599      	6,100       	28       	NW      	220      	190      	ND
<br />       			04/29/99  	1065       			751		150		1 1       	ND       	ND       	15       	ND
<br />       			07/16/99  	1154       			662      	10,000      	ND       	ND       	380      	200    	2ND/ND5
<br />       			10/21/99  	1178      			638      	5,5007       	19		32       	190      	130     	13/ND'
<br /> 		01205 xls/#180183      									1   										As of 01/08/01
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