SITE INFORMATION AND CORRESPONDENCE

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Gene Gabbard Page 2 of 3 Jim and Sheyla Creel 640 N. El Dorado Street 4. It must be demonstrated that the contaminant mass remaining onsite is undergoing natural attenuation, and an estimate of the time required until background levels are reached must be provided; 5. The closure criteria presented in Appendix A of the Tri-Regional Guidelines must be satisfied; and 6. The potential for vapor intrusion of the residual contaminants into the onsite structure must be evaluated using the San Francisco Bay Regional Board Environmental Screening Levels (ESL). After the meeting it was the understanding of the SJC/EHD that a report addressing the above listed concerns, and/or a work plan to obtain any additional data necessary to complete such a report, would be submitted by your consultant, but neither a report nor a work plan has been received by this agency. It was also noted at the meeting and in the letter that lack of reimbursement from the State Cleanup Fund is not a justification for site closure. You are still under directive to monitor and report quarterly on the contaminant concentration trends in groundwater impacted by the unauthorized waste oil UST release on your site. You are currently out of compliance for discontinuing routine monitoring and reporting. The last report SJC/EHD has received, and that was submitted to Geotracker, the State Water Resources Control Board database website, was submitted in August 2006. The SJC/EHD is modifying your monitoring requirements as follows: 1. Reinitiate monitoring by gauging depth to water and properly sampling wells MW- 1, MW-2, MW-3 and MW-4; 2. With the exception of chlorinated solvents, analyze the MW-3 sample according to the current analytical regimen and for total petroleum hydrocarbons quantified as motor oil (TPH-mo), as kerosene (TPH-k) and as oil and grease (TPH-og); 3. Analyze the groundwater samples collected from monitoring wells MW-1, MW-2 and MW-4 for any TPH analytes detected in the MW-3 sample. The method detection limit for the analyses for each sample should be approximately 50 to 100 micrograms per liter if there is no detection of the analyte; and 4. If the outlying wells do not have detectable concentrations of hydrocarbons after the first testing, sample and analyze only MW-3 and the down-gradient monitoring well each succeeding monitoring event for TPH analytes detected in the initial MW-3 sample collected at the resumption of groundwater monitoring. You are directed to immediately resume routine quarterly groundwater monitoring as modified above and to submit the overdue report or work plan. The report is due for submittal no later than February 15, 2008. Also, you are directed to reinitiate extraction and monitoring of free product associated with monitoring well MW-3 and report quarterly on the extraction progress and results. In the FUND's Final Decision, dated 03 October 2006, Ms. Evoy stated her concern that the construction of monitoring wells MW-3 is providing a vertical conduit for free product in the fine-grained vadose zone to migrate to groundwater. This hypothesis would account for the lack of free product in the down-gradient wells. Provide the SJC/EHD