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<br />  										Groundwater Monitoring  ata and Analytical Results
<br />     											Former Unocal Service Station#2859  										_
<br />													1665 Pacific Avenue
<br />													Stockton California
<br />  			Well PD!       	Date  		DTW       	GWE 	TPH(G)  	B     	T     	E     	S      	MTBE
<br />  			TOC*   					(fi)		(MSI)      	<-------------______-----------------_p  					>
<br />  			MW-2		06/06/88   		-    		-     	99,000	5,700	48,800	5,000	25,000      	--
<br /> 						10/26/88  		-   				172,000	9,400 	82,600	4,600	26,000      	--
<br /> 						03/02/89  		-    		-     	163,000	2,460	25,080	3,270 	16,990      	--
<br /> 						08/28/89  		-    		--    	220,000	6,800	44,000	4,000	21,000      	--
<br /> 						11/30/89  		-  				200,000       16,000	35,000	2,700 	14,000      	--
<br /> 						03/01/90  		--   		--    	240,000       11,000	40,000	2,800 	17,000      	--
<br /> 						05/30/90  		-    		--    	260,000       27 000	66,000	5,100	27,000      	--
<br /> 						08/24/90 	DRY 			--		--     	--     	--     	--     	--
<br />  						11119/90 	DRY  			-				-      	-     	--     	-- 		--
<br /> 						02/25/91 	DRY  			- 		-     	--     	--     	--     	-- 		--
<br /> 						05/29/91 	DRY 			-- 		-     	--     	--     	--     	--
<br /> 						08/28/91 	DRY 			-- 		-      	-     			--     	-- 		--
<br />  						11/06/91 	DRY 			-- 		-     	--     	--     	--     	-- 		--
<br /> 						03/04/92 	DRY 			-- 		-     	--     	--     	--     	-- 		--
<br /> 						05/21/92 	DRY 			--       			--     	--     	--     	-- 		--
<br /> 						08/18/92 	DRY 			-- 		-     	--     	--     	--     	--11/13192 	DRY 			--       			--     	--     	--     	--
<br />  			to 19 		03/26/93		48 35       	-38 16  	480 000       14,000	75,000	6,500	37,000      	--
<br /> 						06/04/93		46 55       	-36 36  	170,000       15,000	65,000	5,000	24,000      	--
<br />  						11/12/93		46 78      	-36 59  	130,000       14,000	27,000	7,000	28,000      	--
<br /> 						02/18/94		4482      	-34 63  	200 000       25,000	67,000	5,000	28,000      	--
<br /> 						05/23/94		43 61       	-33 42  	130,000       27,000	68,000	5,400	29,000      	--
<br /> 						08/12/94		45 38      	-35 19  	180,000       15,000	62,000	5,300	29,000      	--
<br />  						t1/08/94		4557      	-35 38  	120 000       12,000	61,000	6,000	28,000      	--
<br /> 						02/07/95		4328      	-3309  	120,000       13,000	60,000	5,500	29,000      	--
<br /> 						05/04/95		39 78      	-2959  	170,000       20,000	54,000	4,400	23,000      	--
<br /> 						08/10/95  		--   		--		--     	--     	--
<br />  			10 08 		08/26/95		39 89      	-2981  	140 000	4,400	63,000	5,400	28,000      	--
<br /> 						11/09/95		39 55       	-2947  	140,000	6,400	45,000	5,600	29,000      	--
<br /> 						02/08/96		3703       	-2695  	280,000	3,500	100,000	9,200	52,000      	--
<br /> 						05/08/96		33 59      	-2351  	180,000	1,900	46,000	4,200	25,000     	ND
<br /> 						08/07/96		3429      	-2421  	290 000	3,200	52,000	8,900	38,000     	ND
<br /> 						11/14/96		3441       	-2433  	180,000	4,200	50,000	9,900	39,000     	ND
<br /> 						02/14/97		3070      	-2062  	110,000	1,500	29,000	4,100	20,000     	ND
<br /> 						05/07/97		28 97      	-1889   	77,000 	1,200	28,000	3,900 	18,000     	ND
<br /> 						03/06/98		2697      	-1689   	80,000 	780  	15,000	3,000 	14,000  	3ND/ND4
<br />  		2859 xls111280054										2   										As of 08/31/98
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