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=IF = M M M = = a = = = M = = 4r T A = GROUNDWATER ELEVATIONS AND SAMPLE ANALYTICAL RESULTS Mel Bokides Petroleum,Inc 501 West Lodi Avenue Lodi,California Well Sample DTW TOC GWE TPHg B T E X TPHd MTBE I.D. Date (feet) (feet) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) BMW-1 7/27/95 5217 4603 -614 2,200 200 22 75 400 390 33 BMW-1 12/14/95 1233 4603 -631 1,400 68 19 42 160 340(b) 91 BMW-2 7/27/95 5212 4577 -635 260(a) 19 14 07 2 270 53 BMW-2 12/14/95 5224 4577 -647 380 26 24 46 18 170(b) 200 MW-1 12/14/95 5422 4720 -702 520 41 61 53 28 140(b) 470 MW-2 12/14/95 5217 4515 -702 790 88 82 92 35 280(b) 90 MW-3 12/14/95 5321 4627 -694 680 25 30 46 16 410(b) 32 j MW-4 12/14/95 5275 4579 -696 250 61 56 39 22 120(b) ND<5 0 MW-5 12/14/95 5165 4506 -659 380 66 12 17 71 170(b) 420 Eq Blank* 12/14/95 N/A N/A N/A ND<50 ND<0 5 ND<0 5 ND<0 5 ND<10 ND<50 ND<5 0 Trip Blank* 12/14/95 N/A N/A N/A ND<50 ND<0 5 ND<0 5 ND<0 5 ND<10 N/A ND<5 0 Notes DTW Depth to groundwater TOC Top of casing elevation referenced to mean sea level-City of Lodi benchmark#516 GWE Groundwater elevation(relative to mean sea level) TPHg Total petroleum hydrocarbons as gasoline by EPA method 8015(modified) BTEX Benzene,toluene,ethylbenzene and total xylenes by EPA Method 8020(modified) TPHd Total petroleum hydrocarbons as diesel by EPA method 8015(modified) MTBE Methyl-tert-butyl ether by EPA Method 8020(modified) ppb Parts per billion(ug/1) ND Analyte not detected in concentration greater than laboratory detection limit noted N/A Not applicable * Equipment blank and trip blank only for wells sampled by Clearwater Group,Inc (BMW-1 and BMW-2) (a) Laboratory annotation indicates that sample pattern does not match Gasoline Standard pattern (b) Laboratory annotation indicates that sample pattem does not match Diesel Standard pattern