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TABLE 1 Historical Groundwater Levels and Chemical Analysis Results For TPHH,BTEX,&Fuel Oxygenates Boulevard Automotive 2151 Country Club Boulevard Stockton,California Well Screen Depth to Groundwater TPHg/ Ethyl- Total Well Elevation[1] Interval Date Groundwater 121 Elevation TPPH[3] Benzene[4] Toluene[4] benzene[41 Xylenes[41 MTBE[41 DIPE[41 ETBE[4] TAME[41 TBA[41 EDB[41 1,2-DCA[41 No. (ft-msl) (ft-b s) Sampled (feet) (ft-msl) (u 4) (a (u /l) (u ) (u /1) (u ) (u ) (u /l) (a (a ) (u ) (a DPE-1 12/19/2011 10.49 46,000 3,700 1,300 1,500 6,700 -- -- -- 18 -- -- 45 1/13/2012 9.90 32,000 4,800 280 1,000 2,580 <1 <1 <1 15 <10 <0.5 74 4/25/2012 8.07 450 15 6.9 11 23.2 <1 <1 <1 2.1 <10 <0.5 3.4 5/2/2012 -- 2,400 260 240 100 470 <1 <1 <1 3.2 <10 <0.5 6.8 5/9/2012 11,000 420 360 150 650 <1 <1 <1 3.9 <10 <0.5 12 5/16/2012 -- 2,500 260 260 93 500 <1 <1 <1 5.0 <10 <0.5 11 6/27/2012 9.60 39,000 1,400 1,700 720 3,800 <1 <1 <1 32 <10 <0.5 26 6/16/2014 10.20 -- -- -- -- -- -- -- -- -- -- 6/8/2015 10.15 12/14/2015 11.89 7/8/2020 9.45 7,300 3,000 65 310 140 <50 <50 DPE-2 12/19/2011 10.00 14,000 1,200 200 1,900 1,850 9.2 18 1/13/2012 10.46 8,600 1,400 91 780 1,415 <1 <1 <1 11 <10 <0.5 23 4/25/2012 8.55 140 <0.5 <0.5 4.3 8.0 <1 <1 <1 3.4 <10 <0.5 6.4 5/2/2012 -- 1,000 29 18 74 233 <1 <1 <1 <1 <10 <0.5 <0.5 5/9/2012 1,100 29 15 80 234 <1 <1 <1 <1 <10 <0.5 <0.5 5/16/2012 -- 1,000 26 7 46 ill <1 <1 <1 <1 <10 <0.5 <0.5 6/27/2012 10.08 5,600 73 19 55 165 <1 <1 <1 3 <10 <0.5 2 6/16/2014 10.71 -- -- -- -- -- -- -- -- -- -- 6/8/2015 10.64 12/14/2015 12.45 Notes: [1]Wells surveyed relative to USGS Bench Mark. [2] Depth to groundwater as measured from the top of well casing. [3]Analyzed for TPPH and VOCs by EPA Method No.8260B. (ug/l)=micrograms per liter. (mg/1)=milligrams per liter. <0.50=Not Detected at or above the laboratory detection limit. ft-msl=feet mean sea level. bgs=below the ground surface. FREY Environmental,Inc. Table 1-Page 32 of 32 Project No.1175-01