SITE INFORMATION AND CORRESPONDENCE

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Quick-n-Save #2 - 3 - .. August 30, 2011 Site History/Assessments The Site has been an active gas station since at least the 1990's. In November 1999, fuel hydrocarbons were detected during a tank removal. To date, three monitoring wells have been installed and monitored regularly. A Site map showing the location of the current and former USTs, monitoring wells and groundwater level contours is provided at the end of this summary. Remediation Summary • Free Product: MW3 has contained product sheen as recently as January 2010 • Soil Excavation: An estimated 522 cubic yards of impacted soil were removed and disposed offsite in 2000 • In-Situ Soil Remediation: Soil vapor extraction, conducted from May 2011 through present, 88 pounds of TPHg removed at a rate of 2.5 pounds/day • Groundwater Remediation: No groundwater remediation has been conducted General Site Conditions • Geology and Hydrogeology: The Site is underlain by interbedded and intermixed sand, silt and clay. The depth to groundwater varies seasonally between 24 to 33 feet bgs and the groundwater gradient is predominantly east at approximately 0.007 feet/foot. No water wells have been identified within 2000 feet of the site. • Groundwater Trends: There are more than seven years of groundwater monitoring data for this Site. The extent of the groundwater plume has not been defined. MTBE trend is shown below, source area (MW-1) METHYL-TERT-BUTYL ETHER(MTBE)Results for MW1 800000 700000 800000 SOOOOU 400000 �300000 200000 •�•• 100000 O 01 .� METHYL-TERT-BUTYL ETHER(MTBE) TrMd Sensitive Receptor Survey A Sensitive Receptor Survey (SRS) is not noted in Geotracker. Risk Evaluation A Human Health Risk Assessment (HHRA) has not been conducted. Recommendation September, 2010, the Fund concurs with the San Joaquin County LOP that active remediation should commence without delay and that the extent of contamination should be defined concurrently with active remediation.