SITE INFORMATION AND CORRESPONDENCE

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Mr. Gregory Torlai, Jr - 2 - • 11 January 2008 H & H Marina Groundwater at the Site is characterized as occurring in two zones. The shallow zone occurs from the surface to 14 feet below ground surface (bgs), and a deep zone occurs from 50 to 60 feet bgs. Groundwater monitoring and reporting requirements for the site are set forth in Monitoring and Reporting Program (MRP) No. R5-2004-0828. Groundwater monitoring is conducted on a quarterly basis. A before and after comparison of petroleum hydrocarbon detections in groundwater as reported in the 16 August 2007 Quarterly Report-Second Quarter 2007 (Second QMR) and the 17 December 2007 Quarterly Report-Third Quarter 2007 (Third QMR) is tabulated below. Monitoring for the Second and Third QMRs was conducted on 7 June and 7 September, respectively. Well Number MW-2 MW-3 MW-4 MW-2 MW-3 MW-4 Constituent June 2007 September 2007 u /L TPH 110 <50 3,200 190,000 140 13,400 TPHd <50 <50 <50 <50 <50 <50 Benzene <0.5 <0.5 <0.5 3,500 <0.5 <0.5 Toluene <0.5 <0.5 <0.5 19,000 16 14 Ethyl benzene <0.5 <0.5 7.6 5,600 9.2 960 Xylene <0.5 <0.5 240 27,400 31.1 130 MTBE 13 <0.5 25 18 <0.5 38 TBA 5,300 500 <5 410 <0.5 <5 Legend ug/L micrograms per liter < less than TPHg total petroleum hydrocarbons as gasoline TPHd total petroleum hydrocarbons as diesel MTBE Methyl tertiary butyl ether TBA Teritary butyl alcohol Groundwater samples collected from monitoring wells MW-2 and MW-4 historically have contained the highest concentrations of constituents of concern. However, during June 2007, TPHg was detected at 1,400 ug/L in upgradient shallow well MW-12 for the first time since monitoring began in this well in 2003. Deep zone well MW-7 also contained TPHg at 1,400 ug/L as well as benzene, toluene, ethyl benzene, and xylene (BTEX). These constituents were previously detected in MW-7 in 2002 and 2005 but were non-detect (ND) in both MW-7 and MW-12 in September 2007. The highest concentrations of TBA have been observed historically in MW-2 and MW-3. Concentrations in MW-2 ranged from 72 ug/L in September 1997 to 5,300 ug/L in June 2007. Operation of the interim groundwater treatment system commenced in June 2005 under general National Pollutant Discharge Elimination System (NPDES) Permit No. CAG915001, Order No. 5-00-11938. Groundwater is extracted from one 6-inch diameter extraction well (EW-1) screened in the shallow zone from about 4 to 14 feet bgs' and located about 40 feet and 100 feet downgradient from MW-2 and MW-4, respectively. MW-3 is about 40 feet cross Groundwater Extraction Feasibility Test Report, 24 July 2003, Advanced GeoEnvironmental Inc.