SITE INFORMATION AND CORRESPONDENCE

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Moller Investments • - 2 - • August 25, 2011 • Groundwater Flow Direction: Predominately to the northeast with an average gradient of 0.002 feet/foot. • Soil Types: The Site is underlain by interbedded and intermixed sand, silt and clay Monitoring Well Information Well Designation Date Installed Scrfe n Interbgs) al Depth(feet bg)ter Ma 2011 MW-1 Nov 02 40-70 47.95 MW_2 Nov 02 40-70 48.60 48.65 MW-7 Sep 08 77 92 MW-8 Se 08 77-92 48.65 MW-9 Se 08 77-92 48.03 Se 08 77-92 48.52 MW-10 77-92 48.52 MW-11 Se 08 48.96 MW-12 Se 08 77-92 Se 08 77-92 48.97 MW-13 MW-14 Se 08 76-91 49.22 MW-15 Se 08 45-65 48.83 48.66 MW-16 Se 08 45-65 48.25 MW-17 Se 08 45-65 MW-18 Se 08 43-63 48.56 49.08 MW-19 Se 08 45-65 49.07 MW-20 Se 08 45-65 Petroleum H drocarbon Constituent Concentration Water u /L WQOs Contaminant Soil m /k Maximum Latest Maximum Ma Latest (ug/L) TPH NA NA 100,000 95,000 5 Benzene NA NA 12,000 12,000 0.15 Toluene NA NA 3,500 920 42 Eth Ibenzene NA NA 1,600 11600 29 Xylenes NA NA 19,800 19,800 17 MTBE NA NA 8,000 8,000 5 TBA NA NA 40,000 40,000 12/1,200a 1,2-DCA NA NA 120 23 0.5 NA: Not Analyzed, Not Applicable or Data Not Available mg/kg: milligrams per kilogram, parts per million ug/L: micrograms per liter, parts per billion woos: Water Quality Objectives 'According to GeoTracker,wells a California Department of Public Health Notification Level/Response Level Site Description The Site is located at 2132 East Mariposa Road in Stockton, California and is an active retail gasoline station. The Site is bounded by Farmington Road to the north, East Mariposa Road to the southwest and a parking lot to the east. The surrounding land use is mixed residential and commercial.