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CASE CLOSURE SUMMARY Page 4 Leaking Underground Storage Tank Program X. Additional Information (to be attached to this report) 1. Listing of Reports Please include a list of all investigative reports, including reports prepared for financial institutions such as Phase I Environmental Assessments, all monitoring data, corrective action altematives analyses, and other consultant reports. If a report on the list has not been previously submitted to the Regional Board, please submit the report with this form. On or attached to the list must be the following statement, with the dated signature of the responsible party or his agent: "I attest, under penalty of perjury, in accordance with Water Code section 13267, the following documents constitute the complete list of documents pertaining to waste discharged, hydrogeology and other information directly relevant to the characterization and cleanup of the waste discharged at the subject site." The following items are optional as applicable to the review of the site for closure: 2. Extent of Soil Contamination a) Maps showing the extent of soil degradation by chemicals of concern in excess of guidelines, before and after remediation. b) Geologic log of the most highly degraded soil boring or monitoring well showing sample points with a list of contaminant concentrations. C) Summary table of all historic soil sampling results. 3. Extent of Ground Water Contamination a) Maps showing the extent of ground water degradation in excess of detection limits for chemicals of concern, before and after remediation. b) Geologic logs, including construction, for all wells. C) Representative geologic log identifying all aquifers. d) Two intersecting cross-sections of the site. e) Summary table of all historic ground water analyses and water levels.