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• Table 1 GROUNDWATER ELEVATIONS AND SAMPLE ANALYTICAL RESULTS Barnes Truck2ng facility i 1817 South Fresno Avenue Stockton,California Well Sampling TOC DTW GWE TOG TPHd TPHg B T E X MTBE 8020 MTBE 8260 Fuel Oxys I D Date (feet) (feet) (feet) ( ) ( ) } ) ( ) ( ) ( ) ) ) ( ) MW-7 319100 2014 812 1202 --- --- 800 13 1 2 075 34 --- <5 0 --- 6/6/00 2014 948 1066 --- --- 410 89 051 065 <0 50 <5 0 --- 8/28/00 2014 1023 991 --- --- 800 33 1 1 <0 50 <0 50 <5 0 --- --- 11/14/00 2014 1037 977 --- --- 660 <0 50 05 <0 50 <0 50 <5 0 --- --- 2113101 2014 1006 1008 --- --- 580 65 <0 50 <0 50 <0 50 86 --- --- 5/30/01 2014 1017 997 --- --- 130 30 <0 50 <0 50 <0 50 <5 0 --- --- MW-8 319/00 2057 941 11 16 --- --- 220 28 064 <0 50 <0 50 --- <5 0 --- 6/6/00 2057 1042 1015 --- --- 260 24 <0 50 <0 50 <0 50 <5 0 -- 8/28/00 2057 1108 949 --- --- 310 17 10 <0 50 <0 50 <5 0 --- --- 11/14/00 2057 1110 947 --- --- 270 11 05 <0 50 <0 50 <5 0 --- --- 2/13/01 2057 1095 962 --- --- 280 12 <0 50 <0 50 <0 50 60 --- --- 5/30/01 2057 1094 963 --- --- 270 15 1 2 <0 50 <0 50 55 -- Notes. TOC Top of casing elevation referenced to project datum (1) BTEX analyzed by EPA method 8260 DTW Depth to water below TOC (2) TOC and GWE value not applicable due to welt box damage GWE Groundwater elevation(TOC-DTW) (3) MW-5 damaged BTEX Benzene,toluene,ethylbenzene and total xylenes by EPA Method 8020 (4) Fuel Oxys analyzed by GC/MS EPA Method 8240 MTBE Methyl tent-butyl ether by EPA Method 8020 or EPA Method 8260 -- Not analyzed or measured TPHg Total petroleum hydrocarbons as gasoline by EPA method 5030/8015(modified) µg/L Micrograms per liter TPHd Total petroleum hydrocarbons as diesel by EPA method 3510/8015(modified) TOG Total oil and grease by EPA Method 8015 Fuel Oxys tert-Butanol,MTBE,Di-isopropyl ether,Ethyl-tert-butyl ether,and tert-Amylmethyl ether by GC/MS EPA Method 8260B or 8240 <### Not detected in concentrations exceeding indicated laboratory reporting limits(DLR) Page 4 of 4