ARCHIVED REPORTS_VOLUNTARY CLEANUP AGREEMENT

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+..i EXHIBIT C SCOPE OF WORK The following Tasks will be completed as part of this Agreement: TASK 1. Review of Existing Data and Scoping Meeting The Proponent will submit to DTSC all background information, sample analysis results, environmental assessment reports, and any other information pertinent to the hazardous substance management and/or release, characterization and cleanup of the Site. DTSC will review the information to identify areas and media of concern, and to determine the additional work, if any, required to complete the investigation/remediation of the Site. Following DTSC's initial review, a scoping meeting will be held to discuss whether further site characterization is necessary, and, if so, how the characterization will be conducted for the Site and how they will be implemented. TASK 2. Additional Site Characterization. (If Necessary) 2.1 Sampling and Analysis Workplan. The Proponent will submit a workplan that describes the activities proposed to further characterize soil, soil gas, surface water and/or groundwater. The workplan should also include a Site health and safety plan, quality assurance/quality control plan, sampling plan, and implementation schedule. 2.2 The Proponent will begin implementation of the approved workplan in accordance with the approved implementation schedule. DTSC may provide oversight of workplan implementation. 2.3 Supplemental Site Investigation Report (see Task 5). The Proponent will submit a Site Characterization Report that, at a minimum, presents the data, summarizes the findings of the investigation, validates the data, and includes recommendations and conclusions. TASK 3. Risk Evaluation and Cleanup Level Determination (see Task 5). A scoping meeting may be held to discussion how the risk evaluation and cleanup level determination will be conducted for the Site. The Proponent will then conduct a risk evaluation consistent with U. S. EPA Risk Assessment Guidance for Superfund (EPA/540/1-89/002) and DTSC Supplemental Guidance for Human Health Multimedia Risk Assessments of Hazardous Waste Sites and Permitted Facilities. This evaluation should identify chemicals of concern and potential routes of exposure; characterize the potential risk; evaluate potential risks to environmental receptors; consider existing and contemplated uses of the site; and identify site cleanup goals. This information may be submitted as part of the Remedy Selection Document. TASK 4. Feasibility Study (see Task 5 Engineering Evaluation/Cost Analysis (EE/CA). The objective of this task is to evaluate feasible remediation and response alternatives. 1